Title of Invention

ABSORPTION CHILLER-HEATER

Abstract There is constructed a constitution including an exhaust heat fired regenerator constituting a heat source by exhaust heat from external machine generating the exhaust heat, a heat fluid flow path for making a fluid having the exhaust heat constituting the heat source or a fluid recovering the exhaust heat flow to the exhaust heat fIred regenerator, flow path open/close device provided at the heat fluid flow path, first regenerator temperature detector, a directly fired regenerator constituting a heat source by combustion heat of a burner, second regenerator temperature detector, heat medium temperature detector controller, in which a combustion amount of the burner can be increased and reduced and the controller controls to open and close the flow path open/close device and increase and reduce the combustion amount of the burner in accordance with the temperature of the heat medium detected by the heat medium temperature detector.
Full Text

ABSORPTION CHTLLER-HEIATER
The piirisent cpplication is based on Japanese Patent Ar.caicatior:. No. 2003-80425. the entire contents of which are Lri .:orporat crci. ht^rein by reference.
BACKGROUND OF THE INVSNTION i.. Field c f ■:.he Invention
Z'he prese.nt invention relat^ss to an absorpt:Lon ':h.,Llle;:-hc;:.t.(:!r, particularly relates to an s.bsorp'":ion .?.cccrdi.ng tc an absorption chiller-hsater of a niulti heat '.■■curce dri'^^e type ha'/ing i-.n exhaust heat fired rec;e:nerator ;:Cfi3r_it/uting a heat isource by exhaust heat and a directly fired re:.:enex'atcr ::instituting a heat source by corrJoustion heat cf .;.: burn'-5r, in order tc achieve energy conservation periformance, :.;0].;:.Tial],y driving.by utilising exhaust heat is predominantly car'rieci ou::.. For exar.ple, in an air condit:-cning systa.^, when v,ir corditi':A-:ing is ;:equeoted/ firsr, the absorption ohJ.iiei-"he::ti:'r is driven by the exhaust heat fired regenerator ]yy utilizi:'..;? exhauso heat and when a heat amount of exhaust he.j-t is insufficient relative tc an air conditioning load, the i-bsorption ohilier-heater is driven by combusting the burner

o.f the dire::t:ly fired regenerator. At this occasion^ in order t-: control to coinbuot the buri-^er in correspondence with a load o::' the ai;: ::onditivning load or the like, the burnv<:r iis r. to coarjoust in accordance with teiriperature of a heat oie coc or h by an evaporator thc absorption c th="it" is temperature the jtiedium portion fron tnedium passage wh:-ch hisat medium flows.> Aere f when the load of the air conditioning loi^-d or the l:,.ke is larg';;, there is a case in vjhich ai heat input araount ■z-x the abi^:)rption chiller-heater becomes excessive since tv/o •■}■<:: cf the exhaust heat fired regenerator and iirectly l:ir are drivc-sn. further there is a in whi::h hec.t input amount becoraes excessive when :iciency : tti at suppleiri.ented by tlie directly . ekh v has been reduced increased or lik sucri case which inpu aniount i exc:- burner controlled to combust :..n accordance with temperature of rr.ediuni outlet rjc::uion fro:ti evapcratcr rnediurr. passage cdritinued drive until iviedium bec lower than predetermined even hea:. becomes excessive. therefore r>oss3bil:.ty of posing a problem in reliability of the

,iLv:x:orpcior. criiller-heater such that the temperature of the ::'>;.l:.aus:: h'i^rt fired regenerator or the directly fired :,.:c:-:',3enecater is excessivtsly elevated; the temperature of the ^rei'^eneratc c becoines abnormal^ operation of the absorption >:;h.Llle.:"he;5.t'-:ir i$ stopped or c.n absorbent solution in the r;;x.liau5-: he.3.t. fired regenerator or the directly fired :;;e(;jene::ator is exce-ssively condensed to crystallise by v;hich ■::\ uieixiber ccr;.^]r.:itutirig the regenerator iis liable to corrode and ■ ;. ::req"jencj' o:: maintenance operation is increased or the like.
Ther^; Lr, proposed an absorption chiller-heater of amulti ;:et:it source drive type having an exhaust heat fired regenerator .'in;i a direcrcly fired regenerator, includrng detecti-ng device TD]-: det eci:ip.o temperature c>f the directly fired regenerator .:,ri order to prevent excessive riee of tenperaiiure cf the _! e:(anei:ator brought r.bout by simultaneously driving the (;:X'iaust. heriL fired regenerator and the directly fired ::-e'::"ene:r-ator :..n starting, wherein when the temperature d^-^^czed I'-y the lietecting device becomes a previously set temp'erature, coiioustiun of a ourner of the? directly fired regenerator is :i":';-ppe':i to ■:herefcy rei^trict a heat input aniount (for example, ::eier to J:='".-.-6-281288 (pages 2-3, Fig. 1)).
However, according to jp-7\-6-2612c8, there is prevented tht-: excess-!, vc-: rise of t:he teiTiperature of the exhaust heat fired j:e;::enerato.r or "he directly fired regenerator brought about by .simultaneously driving T:he exhaust heat: fired regenerator

luni tl"}e d.i,r';=ctly fired regenerator m istarting in order to shorten a r.inie period of s;tarting the cibsorption -.::h:-ller-hi:at:er- Further, a premise is constituted by the fact :.hat 10C% of an exhaust hea.t ^^mount is necessarily present and ':.hi-?ri5fore, r::.) consideration is given to oontrol of heat input ■;.rncunts to th^s respective regenerators when the directly fired ■:'■':;• gen rurt;h6:.r, in the case rn which the burner of the directly ■:i red regenei'i'atcr is assuniedly controlled to combust and stop ■ ■^s\ in .;?'-A-6"281268/ v;hen a heat amount of exhaust heat or the *.c ^d of th^: iiir cond:-tioning load or the like is varied, che 'i:t,rner of tlva directly fired regenerator is controlled to .:c:tibust and stop to coro.bust by cutlet temperature of the heat :.:.e:iiuni froM: the evaporator and temperature of the directly ::i red jregenerator and therefore, there ii5 a case in which the ■ju.rner of che directly fired regenerator is repeatedly ■;.:cTrbusted and stopped to coinbust. Therefore, there is a case '.)f briiicmo .-ibout a state in which the terrtperature of the '.ii.rectly flrf=d regenerator or the like i::? excessively elevated "..r'.:erKfitte::it.:.y, opo^ration of the regenerator by abnormal -..:eioper;'ituie of the rscenerator cannot be restrained frorr: being ;:-;tt-:)pped or crystallisation cf the absorbent solution, ',;o::ros;Lon :iJ- the regenerator or the like cannot be re-strained

:rom beinc bcoughi about and reliability of the absorption :h,Llle::-heat':;^r cannot be promoted.
SUKMARY OF TjIE INVENTlOl-3
The i.nvention is directed to pronot-B reliability of an rtb.'jorction ::hiller-heater.
?in ab:-:orption chiller-heater of the invention comprises ,- 3:irst rec-enerator heated by the exhaust heaty a heat fluid flow path in v/hich a hecit fluid having the exhaust heat flows, :i. -f^low path cpen/closts device provided on the heat fluid flow pal:h fc-r controlling the heat fluid to flow to and to be cut :;f:' from thr; first regenerator by opening and closing the heat I'luid flow path, a second regenerator heated by combustion heat ■jf a burner, at leas~ one of fir^t regenerator temperature ij'^t.actor fcr detecting a temperature of the first regenerator ■ ■nil second rt:generator teiviperature detector for defecting a :. eiiiperc.turci of tha second regenerator, a heat medium ■;
'::c:)ntrols to open and clo^-e the flow path open/close device and incr'3asB -nid reduce the ccmbusticn amount of the burner in ,;.c:cordance v/ith the temperature of the. heat mediuni detected by the hec.L; medium temperature detector and the r&cenerator ;:e--'*[:peraturc':.
]3y C':>n.s-truc3ing such a consStitution, a heat inpur amount :c the firsc regenerator can be controlled by controlling to ,;p in and cl.oii^ the flov; path open/closs device in accordance v?ii:h Ein outlet terr.perature of the heat medium from the •■:3v.,Aporator cf the heat medium detected by the heat medium teJoper-itur-E' detector and either one temperature of the ■■■:cjnper.iitur'r: of the first regenerator detected by the first :,'^s*,iene::atc: "^empercture detector or the temperature cf the i;6<:cnd reg detected by the second regenerator detector. further combustion amount of can be increased and rc :- burn :.s controlled to increase reduce in accordance v.it:h t neat mediuia cj . therefore heat input .1 car. reduced increasing .reriucing thi burner end it is difficult bring about a state which temperaiture :: or like intermittently excessively r:bf as :..n case controlling sf only combusting stopping>
0(viibui;5o th'-: burner. Tnereior^, even when the heat amount or i:;:;: load o!" •:5xhai:st heat is varied, the heat input amounts to -.h.^: respective regenerators are .difficult to be excessive, . ■ ■U::'Ppeije c-f t:he operation by abnormal temperatures of the ::^:5p3czive r::genercitorS/ crystallization of th«s absorbent .^.c Lution, corrosion of the regenerators can be restrained from being i^roucih':: aibout and reliability of the absorption ,:h Llier^h€c;tOir can be promoted.
Furthctr, the controller is constructed by a constitution i.n which tl'.a i-egenerator teinperature is set by the temperature of the seccn::, regenerator detected by the second regenerator ne'iected b^ the second regenerator temp^^rature detector. By ;.::c3istruci:inc' such a consticution/ v/hen only the f:-rst ;ve B'urt/ei', there is constructed a constitution comprising ;:.ot;h oJ" thr: first regenerator teiriperature detector and the ■,:e:,:ond r eg.';:!■:; rat or temperature detector^- v;herein the r.oritroJ.ler aers the legenera'cor temperature by a h:.gher one c^f eithier i:-;?n'perature of the temperature of the first rei'eneratoi detected by the first regenerator temperature t^ez-ectc-r a:id the temperature of the second regenerator

:l€":ectcd by hhs seconci regenerator temperature det6;c:tor. By iXi'iStructino such a constitution, the coHwrol is carried out j.n .i^ccc-rdancL-: with the temperature of the regenerator having 1 ha hicjhes': lemperaLure B^t that occasion in the f:-rst ' .! s:)ens:^■ato^ i;ind the second racenerator and therefore, the he^it '.n:.>ut ciraoun': tc the regenerator can further fir:Tiiy be K.o'Atr.o'i led.
?urth,-.:i::, there is constructed a constitution in which vh'i^-:\ the corrl>us-cion amount of the burner can be increased or ::e'.lucsr: in steps by a plurality of stages;, the controller (.-■e; ermines ::o open c.no close the flow path open/close device c^.n;;i the conibu^stion a.mocnt of the burner in accordan::e with a j:.li;,rality c f :5et, temperatures p^reviously se" in correspondence with the ter.perature cf the heat raediu^Ti and the temperature of the hea': r:ediur;i detect^nd by the hea': rr.edium temperature c;-:3i:ector and thereafter, increases and reduces in siteps the c::3i^,bustion ;;.m'.::unt of the burner to thereby increase and reduce in ::;teps a heat input amount to the second regenerator in accordance \vith a plurality of set; t'5;mperatures previously set in correspondence w:.th the regenerator temperature and the recjenerator temperature detected by the regenerator tenperature detector.
Further, thsr^ is constructed a constitution in which w\'\i:tx\ a corabu£: uion state of the burner can continuously be increaj;;5d a:'i:i reduced steplessly, the controller detsrmines

:::o:i\prisincj a cooling rn.ediun temperature detector for det€;cting -\ temper a tirii-^^ of a cooling inedium supplied to an absorber, .vKerein the controller changes v^-alues- of the plurality of set cf/.tipetr^ture-s previously ^et in correspondence v/ith the :':t centarator l:.eiriperature in accordance with the terriperature of ::t3: cooling x^diuia detected by the cooling it^^dium terriperature .:.(=; :ect: 3r. H^/ constructinc such a coni5titution^ tho lower th«s i:e:i'peratur'::: ct the cooling solution, the lower the terr.perature .;;f the second regeneraT:or and therefore, the heat input Amount jr:-cil i:hf-? recenerator temperature reaches a plurality of set -leijrper.itures previously set to the regenerator temperature can ':)£ res":rained from being increai-ed and therefore^ fuel ■:;c:"^>sum}>cicr. --rt the second regenerator can be reduced and energy '-.:ov"i3ervatiO'ri performance can be promoted *
ERIE.r DESCRIPTION OF THE DRAWINGS
Pig. I. is a diagram showing an outline constitution of Figs. 2h and 2E illustrates diagram^: showing a control :*f heat inpn-:: amounts of refjpectively regenerators according ic the first embodimant of the absorption chiller-heater :::cn.3tit,uted oy applying the invention. Fig. 2A is a diagram :;ht,)wing a control of heat input amounts to an exhaust heat fired ::;e:(enerator and a second regenerator by an outlet temperature ':::'f cooled c:..:' 'warmed water and Fig. 2B is a diagram, showing a

to open and clcse ths flow path open/close device and stop to .:>:inbu3t or ccTrtbust the burner in accordancs v/ith the plurality o:: set teK:p;5.rat:urei3 previously set in correspondence with the ::or-Lpej:atiu:e of the hi?.-at juedium and rhe temperature cf the heat uediun d't:tG;;Cv:ed by the heat i-nedium terrperature detector and >'iien trie l-Jirier is combus'Ced, "he controller determines the ::c>nibui5ticn c-.;"ount of the burner based on a proportional i-fjilation^hip thereof -with the temperature of the heat medium .;5nd thereai'ter deternines the combustion 5:iuount of the burner ■;>c-:3ed on the proportional relationship with the temperature ■:f the heat nu^dium by increasing and reducing in stepo a maxirnuiu ;.:c: TLbus'iior l;i,iait previously set to the burner in accordance ■.n z'h the plurality of set remperatures previously set in ■ :c ::resj:>cnce:;';it::e v^ith the regenerator temperature and the .;e'^ene::atc:: l:emper^.ture detected by the regenerator '::ejr.per *
(.;oinbusi:ion aiv.ount limit to thereby continuously increase and ;!;eduoe the lituat input aiaount to the second regenerator.
F.y cr.in.;; true ting such constitutions^ in addition to i;-.nSibling to promote reliability of the absorption ::b.:'-ile?:"-hea;:^;r/ accuracy of controlling the function cf :::c-';linc[ or "w^trming the heat medium of tlie absorption :vh:i..ller-he;:':';:r in correspondence Vvith the load can be ;; 'rc;mot€:d.
Furtrei:, there is constructed a constitution further

.■■:cntro.L of the heat input amounts of the exhaust heat fired ,:e'jene;:at:c:i: ^nci the directly fired regenerator by a ;re'3ene;:atc c "emper^ture;
rig, 3 is a sc'r:enat:-c diagram showing a concept of ::;c]:itrc.Minc' the heat input amounts of the exhaust heat firad. :>j<:ato:: the cirectly fired regenerator by outlet. ecrioerature of cooled or v and ter-iperature according to first embodiment . cl- constituted applying : rl> E'ig. 4 is a diagrain showing a control of heat input .i,m:runt^i of z-r. exh?.ust heac fired regenerator and. the directly ;rii;3d regenerator by an outlet temperature of cooled or warmed vater s.ccording to a second eiubodiment of an absoi'ption chi llei-he.5.ter constituted by applying the invention;
Jig, :'i is a schematic diagram showing a concept of the <: of heat input amounts the exhaust fired ::e: and directly regenerator by outlet e::r.per::i:urt: cooled water temperature second errr absorption her r con:s-:ituted applying invention> Fig. i :_s a diacram for explaining a way of determining c'. .';et cemperature in correspondence v/ith the re generator teu.perature in correspondence with an inlet temperature of cooling water according to a third embodiment of an absorption

ch:,.lle::"heai:er constituted by applying the invent ion ;
E'ig. 7 is a diagram jior explaining other way of ret:enrJ.nir:g the sez temperature in correspondence v/ith the ;:.eifenerato;: teir.'oerature in correspondence with the inlet 1: e::iperc.tur£j of cooling water according to tlie third embodiment cf the Eibsorpr.ion chiller-heater constituted by applying the :i n\ Gnti.on; and
;Fig. •:? is a diagram for explaining still oth^rr method c f deterniining the sst temperature in correspondence with the jieiirener-ator -i.Gmperature in correspondence with the inlet i; e::Mper= tur-i; of ccoliag water according to the third embodiment <::: the . chiller-heater constituted by applying rhe :. n> D£:rAILf::D DESCRIPTION CF THE FREFERFSD EiyiBODIiM£NT_S
{Fi r:r: Embodiment)
An explan,= tion will be given of a first embodiment cf c.n absorption chiller-heater constituted by applying the :.,n-/ention in reference to Fig. 1 through Fig. 3 as follows. Fi;:. 1 i:-:> o ::iagram showing an outline ccnstitution of an ^:b;:orption c:viller-h€iatsr conf^tituted by applying the :,n-/ention. Figs, 25\ and 2B illustrate diagrams showing a coi"":rol cf heat input amounts of respective regenerators of thir absorp':icn chiller-heater constituted by applying the :.n'/entlon, Ho. 2?i is a diagram showing the control of nhe input c:.m.:unts of an exhaust heat fired regenerator and a directly

t":.red ::ege]:.e;:ator by an outlet temperature cf cooled or warmed water and '?'i.c. 2B is a diagrara £)howing the control of the input ';j;iounts of the exhaust heat fired recenerator and ths directly LJ.red cegerierator by a temperature of the regenerator. Fig* :i is 2 scherncitic diagram, .-zliowing a concept of the control cf r.iic; inout .:i:nv:iunts of the exhaust heat fired regenerator and ;:.rv£; directly fired regenerator by the outlet temperature of cooled wat.er and tlie temperature cf the regenerator of the dk»sorptior. c::iiller--heater constituted by applying the ir.venr ion. Further, according to the einbodiment, an .■:>;;plan2tic-r:. will be given by taking an e: As sltown by Fig. 1, tha absorption chiller-hea'cer of the ':.£n':odijnent ii constituted by ^n exhaust gas fired reganerator If a c:irec-:ly fired regenerator 3, a low temperature rege::7e;:ato.: ^, a condenser 5, an evaporator 7, an absorber 3, .■:i ':ont::cl portion 11 and -:he like. The exhaust gas fired ;:eqene;rato:: ;.. corresponds to the first regenerator of the ..,.r.-/ention ^I'.d is for carrying out heat exchange between exhaust i.;ia.> froK". an external machine generating exhaust gcis by (.;:oinbustion and a diluted solution and generating vapor of a Goolincj medium by heating the diluted solution by heat provided

'.■;y the e>:hauf>t gas* Such an exhaust gas fired rege-nerator 1 :.s .Lnstalit:d on the iipper sice of the directly fired regenerator 3 -ind the iilcs. The directly fired regenerator corresponds ■:;o the secorid rsgenerator of the invention. Further, the .ixjiaus:: gai fired regener.stor 1 is provided with a first ;;:c-v3ene:rato:: teiriperature sensor 13 for detecting temperature of the =xhc,:st: gas fired regenerator 1. The first regenerator ■;,.eraperatur*5 :!jensor 13 is for detecting t-emperature of an ,-.fc::5orfc(5nt solution at inside of the exhaust gas fired i/ecjeneraror 1 as temperature: of the exhaust gas fired ;;;e;ienerat:or 1.
The ':>:haust g^ti fired regenerator 1 is connected with :,!u int]:oduoing duct 15 constituting a guide flow f)ath for vju: ding exl-wu;st gas fro'm external machine or the like for -lierierat-.iny ^::xhau3t: gas by combustion to a flow path of exhaust va;; at ins.ide of the gas fired regenerator 1 and an exhaust c.iu;;t 17 constituting an exhausi: flow pa^h for exhausting (■;x:\au5t. ga.E. from the flow path cf the exhaust gas at inside C'f the exhojsv: gas fired regenerator 1. The introducing duct 15 and Lhe exhaust gas 17 are connected with a bypass duct 19 i:vr-:.nch£-d frzn rhe introducing duct 15 and merged to the exhaust cU':*: 11 to thereby constitute a bypass flow path. A branch };o.c"::ior, of the introducing duct 15 and the bypass duct 19 is provided wi :.h a flow path switching device 21 constituting flow {;a:h o;-:en/cl::f5e device of a valve, a damper or the like for

:;-;w:ltcli:'.ng ;:low of exhaust cas to the introducing duct 15 and rho bypass duct 19. The flov/ p^th switching device 21 nakes r;;x]iaus!: ga.^' i'low to the introducing duct IS in a switched-on : tate and n.;?.!:es exhaust gas flow to zhe bypass duct 19 in a ;\w:Ltched"0::f state.
.?. po::t;Lon of the exhi^ust duct 17 on an upstrearci side of :'1:)W of ex!:::ii:st gas of the :Tierged portion of the bypass duct ; 9 and the ^.fxhaust duct 17 is provided with a cut-off device 2 3 constituting flow path open/close device of a valve, a daraper or the 1 ike for cutting off faow of the exhausjt gas. The cut-off (:.:ev'ic6 23 i.s opened in a owitched-on state and closed in a ;: vi.tchcid-of:: state to cut off th'3 flow path of exhaust gas at .inside of tr.a exhaust duct 17. Further, a constitution of not :i.n=;tal].ing the cut-off device 23 can also be constructed.
cuch en exhaust gas fired regenerator is 1 is connected v.:i;:,h a dil.r.:'i:d solution passage 25 for guiding a diluted :-;o.]ution gr^nerated cz the absorber 9 to a flov; path of the t::ilute:: so.] ..t ion at inside of the exhaust ga,s fired regenerator :i . An (jutl'::t: pcrtion cf the diluted solution passage 25 from tl:i': absorbf:,:." 9 is provided -with a pun^p 27 for delivering the c:.i 1 ut.ec. so.: i.r: ion» "i^he exhaust gas fired regenerator 1 is (.orjiected v;.:.th one end of a solution passage 29 for .T..aking the oi.lui.ec solnti-on or a n.iddle concentratior; solution at inside of the exhau;Ei: gas fixed regenerator 1 flow* Other snd of the :roiuticn prtsisage 2S ;,s connected to the directly fired

ri-'gen-erator 3. An upper portion of the exhaust fired n^generat'jr 1 is connected with one end of a first cooling .ra:: The directly fired regenerator 3 is for heatslng the diluted solution or the middle concentration solution from the arrhaust g^.s;. fired regenerator 1 by combustion of a burner 3a and th'2 burner 3a is connected with a fuel supply pe.ssage 3c ':-(£■.v-ing a f^ie] control valve 3b for ccr:it>usting and stopping to corabust ths^; burner 3a» A combustion state of the burner 3a Cgi;",. be swit;::hed to »1 stages of 3 stages of combustion arriounrs ct low corr-OListion, "iTiiddle coiabustion and high combustion and ■ .r5t :pping ct combustion. Further, the directly fired .■re: .generate t 3 is provided '^ith a second regenerator "':£:;r.peratui:'?: .::iensor 35 for detecting teniperature of the ■:.3i,-ectly f.ired regenerator 3, The second regenerator teifiperaturir sensor 35 is for detecting temperature of the \:iitidle con:'/?-r':tration solution at inside of the directly fireo r'eqenerato:-: 3 as temperature of the directly fired regenerator
L bc!::t:0'm portion of the gas-liquid separator 33 is connected with one end of a middle concentration solution ;:.a;isage 37 for guiding the middle concentration solution

:,;tO'red at :.hf;i bottcrri portion in the gas-liquid separator 33 ■:;o the lev; t:-Eimperature generator 4. Other end of -the raiddle :::oriC'ar/:raL ion .solution paissage 37 is cronnected to the lov; 'i..etnper.';iture recensrator 4. An upper portion of ths directly ■:i:rsd rege::'=:::ator 3 is connected with one end of a .solution /iiftincj p?.:;:3=ige 39 :^or inakincj cooling medium vapor generated -i" t inside oz the directly fired regenerator 3 flow and other en'i of the .solution passagvi^ 33 is opened at insider of the <: ::feperator> Inside of the lov; temperature regenerator 4 is installed v.it.h a ^ieat exchange flow path 4a comraunicated with inside of X.\vi: gas-li:;uid separcitor 33 for making cooling medium vapor at insi.de 'J::- the gas-liquid separator 53 flow. The heat t; X'::hanc'e flow path 4a is connected with a second cooling medium V,acor passr.g:-: 41 for guiding cooling inedium vapor flowing at :,.n:^ide of :'::\e heat exchange flow path 4a heated by the low tieuaperatur-:: :::£generator 4 to the condenser 5. Further^ the lo'.v tempera-iMre regenerator 4 is connected with one end of a c-o:: cent rat*: ;:1 solution pipe 4 3 for heating the middle ooKCf^nrratlon solution flowing via the middle concentration solution pa;:-,:?aga 37 by heat of cooling medium vapor flowing j.n [nhe heat f:>:ch.^nge flow path 4a to constitute a concentrated .5;::)lution ar.:l t.hereafter delivering the concentrated solution to i,:he abso::ber 9. Other end of the concentrated solution flow pat.h 4 3 is connected to the absorber 9.

In3i:ie of ths condenser Sis provided v/ith a heat: exchange ::1 ow rr^th V^a forming a port;ion of a flow p£.th of cool:.ng water :v' being connected to a ccoling v;ater passage 4 5 in which :c cling v.'c;ter constitiiting cooling medium flov/s. A bottom >c ':tic:i of c:he condenser 5 is connected wiLth one end of a cooling i^edium pa.^-iiage. 47 in vjhich cooling mediu:i:: produced by ■:c:id'Sru5inc ^a:.d liquefying cooling mediu:rr'. vapor flcv;s. Other iind of the cooling medium ps.ssage 4 7 is connected to s. cooling ■:.:iie The iioi^orber 3 is actually conmiunicated with the ^: v.^pore tor "^ although not illustrated in Fig. 1 and is c:.o:-.,5tituted :Euch that ccoling miedium vapor generated at the (■■V.operator 7 can flow to the absorber 9. Inside of the absorber !;■ i 3 prcvidt5d with a heat exchange flow path 9a forming a portion

of a flow p;ii:.h of cooling water by being connected to the cooling i./a':er pass.^-ge 45. Further, inside of the absorber $ is ^[)lovlc^^d with. a. concentrat(5d solution scattering portion or !.h?i li:Ce, ".ot illustrated, for scattering the concentrated VDilution t-,"v the hsat axchange flov; pat:h 9a by being connected ','it:h tb'.e ccnc.entrated sclution passage 43. A bottom portion of the absorber 9 is connected with one end of the diluted i-ol.ution pc3;Esace 25 for dcslivering the diluted soJ.ution The m:..ddl
:=:c;)lution ::lowi.ng at inside of th^ middle concentration ::.c)lut:_Qn passage 37, Further, the high temperature heat i:r::';changer :■?» ie provided at a portion of !:he diluted solution pa:.ssacj5 25 or. the downstreaiTi side of rhe branch portion of the diluted soluiiion p<5sage and the branch passage with ::e5pect to flow of diluted solution.> A pcrt-ion of the diluted solution passage 25 on the :Jc-ftHst ceani ^ide of th^ pu:cnp 27 with respect to flow of the
■ jl luted sol.U':.ion is provided with a check valve 61 and a portion ■-)f the diluii^ud solution pas.^age 25 on rhe downstream side of Kh-i check valve 61 with respect to flow of the diluted solution and on th.e upstream side of the branch portion of the branch i:.i5, Bsaco 63 ;.;;; provided with a low teinper ■ ?xhaust: ga.; fired regenerator i continuous to the exhaust gas ::i::ed 2-egenerator 1. The heat exchanger 65 is for carrying -r-Ui: heat exchange between exhaust gas and the diluted sol'azion, ru::the3-^ th:5 cooling water path 4 5 is arranged to circulate ccc';ling water from the absorber 9 to a cooling tower, not

r.AIusrrated, by passing the condenser 5-
The control pcrtion 11 is electrically ccnnected with the fir^t regenerator terr^-perciture sensor 13, the second regenerator temperature sensor 35, the bea'i medium temperature sensor 51^ the cooling mediun teraperatur*^ sensor 53, the flow i:)^:;t:h o\vitchirig device 21 and the cut-off device 23,, the fuel cc^ntrol valve 3b and the like respectively via wirings 67. Turther, art]:ough sensors are installed other than these, the ::;ensors arc; not directly related to the invention and therefore, t h e s fe? n s o r s a r e omi 1.1 e d,
?.n e:ccj-anaticn v;ill be given of a control of heat input .:-.r!.LOunt5 cf ■::he exhaust gas fired regenerator and the directly ill red i*ege;:'ierator of the absorption chiller-heater h^iving such r,3 '.:onst:itur/Lcn and a characterising portion of the invention. TV. cthec, whitn. the control portion 11 does not receive a drive ,.5i.:nal fro:; -irxternal machine generating e.shaust gas, that is, ^J^:■.an e.
:lc)w path ;3w:i.tching disvict? 21 and the cut-off dsvice 23 in :i:;c:.ordance with an outlet temperature frcra the evaporator 7 .;■£ ::;oo].eJ or warmed, v^ater, and a higher one of temperatures o.f the 3xhau;i;i: cjas fired rscenerator 1 and the directly fired ;;.-e::eneratcr 3, that is, the regenerator temperature to control :::i-:(v/ of exhaust gas to the exhaust gas fired regen^srator 1, i-.n explanat.ion will be given here of a case of carrying ou:: C0':'linc operca:ion when nhe control portion 11 of the ab£>orpticn ch.i ller-he.:;T:er used in an air conditioning system receives the c;;:;i.ve signal from the external machine generating the exhaust qa:.- and exhaust heat can be utilised.
When normal operation is started when the drive signal I'r'Ma the e>:v(:rnal machine generating the exhaust gas is r3'::eived, the control portion 11 deterj:\inG;3 heat input to the eK;.:au5t gas fired regenerator 1 and a combustion state cf the bar.ner 3a c::: the directly fired regenerator 3 in accordance v;i'::h the oatltit temperature of the evaporator 3 of cooled water ci'fr::ected by ";:he heat mediu;ai temperature sensor 51. At this occasion, thi.-? control portion 11 is inputted with set t-EJi-perature^; Tel, Tc2, Tc3, Tc4 when a heat input amount is j..'iv,;rea;5ed a::d set temperatures Tcl'^ Tc2% Tc3', Tc4' when the h^:;at input amount is reduced as four set tem.peratures previously s:e:: in correspondence with the outlet temperature from thti ev^-.pcrator 7 of cooled water. Further, it is assumed that Tcl
The control portion 11 compares the outlet temperature of cooled water detecred by the heat raediun temperature sensor 5,1 and the :i>€:t '::emperdtures, as shown by Fig. 2A^ for example, a::*-:er the cu\":let t^smperature of cooled water becomes equal to 0.:: hi^^her ztan the ;3et temperature Tc3, 'men the outlet t^;ijaperatu:::e of cooled v/ater falls in a range higher thcin Tc3' i\)'id lower f,!::;in Tc4, the control portion 11 makes exhaust gas {:lov; to the exhaust fired regenerator 1 by transmitting on ii)struction isignals to the flov; path sv;itching device 21 and the cut-off device 23 and transmits a middle combustion ii'ifitruction i>ignal for controlling a valve opening decree to im opening cegree of caxrying out middle combustion to the fuel ccjutrol value 3b of. the directly fired regenerator 3, Thereby,. hcJcit input, that is, input is produced to the exhaust gas fired reiicjenerator 1 by e:0:aust gas and to the directly fired !':€•.generatcu-: 3 by middle combustion of the burner 3a.
At t'."iis occasion, the control portion 11 monitors ::€i'mper2tur.'>s of the exhaust gas fired regenerator 1 anvd the 'iirectly firr^d regenerator 3 by the first regenerat:or ■:^;::riperaturt^; ;.-ensor 13 and the second regenerator temperature ■^t^:::.sor 35, e.ets the regenerator temperature by a higher one ■■:t eit.her temperature of temperatures of the exhaust gas fired ■:tv:eneratc r 1 and the directly firing ■:he regenerator 3 and '::c::.trols tne combustion sta'ce of the burner 3a of the directly .:.:i red regenerator 3 cr flow of exhaust gas to the exhaust gas

::ired reg^^z-erator i in accordance XN^ith the regenerator
;e:upex-aturs;. The control portion 11 is inputted v/ith set ■LiGK.peraturcS Tel, Tg2; Tg3, Tg4 vjhen the heat input axnount is :..-eiiuce The control portion 11 sets the regenerator temperature ::,:y a highe:: one of either temparature of teinperatures of the :r
'ivi-raperatuirG Tgl, the; control portion 11 transniits a low ::onibustio:i instruction signal for ccn':rclling the valve opening tc an opening fox carrying cut low combustion in which !:he coTibu;;tion amot.irt is reduced by one stage fro:m raiddle :;c).Tubu3tiori CO the fuel control valve 3b of the directly fired cegen^tr^tOT 3, Thereby, heat is inputted tc the exhaust gas ■:J,red .regen'E;:ator 1 by exhaust gas and best is inputtisd to the 'ilrectly tired regen^ra'cor 3 by low corabustion of the burner ,:5e. and the hE^at input amount is reduced by one stage.
When :,he regenerator temperature is elevated to be equal :c or highcir ':.han the set temperature Tcj2, the control portion 11 reduces the heat input amount further by one stage to bring ..ihout a statci in which ti'ie heat input a-^iount is reduced from v:h? he^.t ii:p'jt araount de":ermined by the ouclet temperature of ■:C'.:)lec. water by two stages. Therefore^ when the regenerator -;;.e]Dpexatui"e is elevated to be equal to or higher than the set ■',e]aperatur^-- 'Ig2, the control portion 11 transraits a coiribustion ;-.t'yp ir stru::t.icn signal for cutting off the valve tc the fuel :;0;itrcl valvar 3b of the directly fired regenerator 3 to stop r;onbustion. Thereby, heat is not inp)urted to the directly ::"i.:ed i-egeri:dr:ator 3 ^ind heat is only inputted to the exhaust y^aii fired regenerator 1 by exhaust gas anci the heat input araount :.s reduced further by one stage.
/'hen the legsnerator ternperauure rs elevated tc be equal ':c or h.lgher than the set temperature Tg3, the control portion

:..l ,red'::C8s the heat input air.ount further by one stage to bring i.bou'c ci .stiiti^i in which the heat input amount is reduced frcra i..h(; hest input amount determined by the ou-ilet teraperature of ;:;ooled watcM: l:>y thre-s stages. Therefore, when the regenerator l:s::iper^iture is slevated to be equal to or higher than the set •\-.h:-\percituTe I'gZv since conbui^tion of the burner 3a of the i:li3:ectJ.y f.i.rf-;d regenerator 3 is stopped, the control portion ".A trariSir.it-.s an off instruction signal to the exhaust fired .!:e:i3nei:ator 1, openi5 the flow path of the bypass duirper 19 by :;j.vi.tchj.ng 'zhn flow path switching device 21 to bring about a :r':^.te of closing the ficw p^.tri of the introducing duct 15 and l;ri,;:igs aboi:.i:: a state of clcsing the flow path of the exhaust cur.t 17 by ;::losing the cut-off device 23. Thereby, heat iz I'C: inputtfcrd to the directly fired regenerator 3 and heat is i':o: inputt';:d to the exhau^^t gas fired regenerator 1.
iFic. 3 .'.chematicaily shovis a concept of such an input coi";:rcl in accordance with the outlet temperature of cooled va':er and the regent^rator teniperature by the control pcition 11 . Ths flow of control exemplifi?:id up to this point is a flow :.n 3 vei'tic.:.! directrcn de.^ignated by an arrov;raark of a broken :,i:;:e in Fig. 3, Further, although in Fig. 3, the set tei;peratur«^5 Tel, Tc2, Tc3, Tc4 when the hf?at input cimcunt is :'.n'::rea3ed sre; shown a? t}ie ^':et temperatures in correspondence wi'::}i the outlet rernperature of coded water, when the heat input ci,:n(n]nt Is reduced, the set ter^iperature TclS Tc2', Tc3', Tc^.'

.=r'.;bst:itate5 ror rhe eez tenlper^\tures Tel, Tc2^ Tc3, Tc4, S.;.:ailarly, alt.'iough the set temperatures Tgl, Tg2, Tg3; TQ4 v;lH3n the hoar inpu-: amount is reduced are snovm as the set ::t;:npe:-atu]:0 3 i,i ccrresponcence with the. regenerator ■:;(:;rip(5rat:urf:, v/hen the heat input amount is increased^ the sex: :.(.:T.peratui:e;;; Tgi', Tg2% Tg3'/ Tg4' substitute for the set i:.e:n'iperatnre!ii Tgi, l'g2/ Tg3, Tg4 • Although the set i:.£;'.::iperatui:es ir. ccrre^spondence with the outlet temperature of cc'Oled water and set temperatures in correspondence v/ith the r^i:venerator teraperature can also be constituted by single ones of the sex. teinperatures Tel, Tc2, Tc3, Tc4 and the set :t::Tiperatu;:;-.':) Tgl, Tg2, Tg!:, Tg4 regardless of an increase or .:3 ceduotic'i in the heat input amount/ since there is a case :i: frecuen':ly changi.ng the combustion amount; as shov/n by Figs. ?J'. and 2B/ :.t is preferable to differ rhe set temperatures v;hen :.h'3 herat inp\Jt amount is increased and the set tenvperatures '•jh-3n tj"ie hec-/: input amoun^; is reduced from each ether with iu lervals '^riorebetween.
When ::!",e set temperatures in increasing the heat input arf-:mnt and tl^e set terapera'::ures in reducing the heat input rijT'ount dii-;e.r from ^ach other v;ith intervals therebe-iween in ■.:.h::s '^n\y, iloi examiple^ sfter the regenerator temperature is ■ ilitvate^d tc be equal to or higher rhan the set temperature TgS, {Jh^rn the regenerator temperature becomes equal to or lower than /'gis', ~s shown by Fig. 2E, the heat input amount is increased

oy one stc.::e to return to the 3tate in which the heat input .in:;:>unt is rf:!iuced hy two stages from the heat input amount „le;:iermined by the outlet temperature of cooled wacer, rh i;:refore/ v/hsn the regenerator temperature is lowered to be vsc-:.ai i;o or lower than the set Tiemperature Tg3\ the control :::';C rtion 11 transmits an on insi::ruction signal to the exhaust tfc. s fi;:ed .r-sgenerator 1^ closes the flow path of the bypass (,lu :t IS by t;witching the f lev/ path switching device 21 to bring r:b':ut the iitcite of opening the flow p5-:h of the introducing ;!ut.:t 1^. anc. to bring about the state of opening the flow path ::.f the exha'c.st duct 17 by opening the cut-off device 23. j'b'ireby;. e.-;houst ga:? is made to flow to the exhaust gas fired ;-egenei:ator 1 to bring about the inpuc and the input is '.ncrea.sed t>y one stage.
Furt/iiCir^ v/hen the regenerator teiuperature is lowered to !::e equal to oi: lower tlian the set terr.perature Tg2', the control j::Q3;tiorL 11 rnc.reases the hea*: input aniount further by one stage *;-0 bring ba'::'-: "ihe sta'ce in which the heat input aD-^.ount is reduced 1;// one iEtag-c; i'.ron the heat input amount de":ermin
:e :ens:.ratc t: ;! is produced by lev/ combustion in addition to the ,,.r:;:ut i:o th=2 exhaust gas fired regenerator 1 to increase the ;ie.>t input amount further by one stage.
Meanwh:-le, assuzr.e that when the outlet temperature from ■.h(3 ^vaiporat(3r 7 of cooled vater detected by the heat medium i:,er:iperjiturt= c^ensor 51,- that is^ the outlet temperature of ;-;c r or exairiple, asoum.e that rhe outlet temperature of cooled \vat;er c:ete::t'E'.d by r.he heat medium tempersiture sensor 51 is i:e:.\veer. the set temperatures Tc3' and Tc4 as shown by ?ig. 2A, th=::: ext.aus:. cas fired regenerator 1 is switched on and the l;u:;ner 3a of -r-he directly fired regenerator 3 selectd5 middle c;o:;r:bu3t ion - the regenerator temperature becomes equal to or lO'v'er tnan t:h^; sez temperature Tg2' / the stage of the increase or ':he reduction in the inpux: becomes on^ stage input reduction, xhii exhausi: gas fired regenerator 1 is switched on ano. the bu::ner 3a of the directly fired regenerator 3 becomes low c;:o;t;l:iUStion. At this occasion, w*hen the cooled water

tn::mperatu::e is elevated and the outlet temperature of cooled v/ater exce^dz^ the S5t temperature Tc4, th^- input is increased ':)\i one stage and the burner 5a of the directly fired regenerator 3 I;eccn.e5 if.ic.dle ccr:^ustion. That is, in accordancG with Fig. 2hf when the cutlet temperature cf coded water exc-^eds the s;€;:t te;nper:i.t are Tc^., there is brought about a state in which ■::i,e exhaust ga.5 fired regenerator 1 is ^-witched on and the ..:a:irner 3a of the directly fired regenerator 3 becomes high vorobustionj however, since the stage of the increase or the reduction of the input becomes one stage input reduction in ^sccordance with the regenerator temperature, there is brought .it'out a state cf middle combustion in which the input of the l.:u; i:ner 3a C'f the directly fired regenerator 3 is reduced by .311= Stage mote than that of high comtjusrion.
::n thi:-- way, after the stage of the increase or the ce'Juct.Lon in the input is determined in accordance with the :i::ee o;: T:he reduction in the input, for example, a conrrol ;}f flow in the hori/:ontal direction maintaining the state of : >n(,^ stage :.nput reduction.
Further, in the case cf heating operation, there is

Cc: rried out a control similar to -chat of cooling operation :i>>; :'.ept dif ::i=]-er.ces in numerical values of set temperatures in •;;o:rrss;;onc'::'n::e v-'ith the outlet t-^mperature, that is^ warmed ','a'!:er -reraperature from zhi^ evaporator 7 and the regenerator zerriperatu^j'v ^nd that v-'hen the warm v;atsr te.Tiperature is lov;ered, ■:;h ccjnbus'iion araount is increased. Further, when exhaust .::e'at canno": be utilized, there is similarly carri«;5d out a .:;:)rvtro'„ of 'ih^^r combustion amount of the burner 3 by corr:rolling ■:,h(i fuel control vale 3b of the directly fired regenerator 3 .■:x::apt tha^; the flow path svitching device 21 and th In th.i^!: Kay, according to the absorption chiller-heater of the embodiment^ *:he heat input amount to the exhaust gas 2:,i.:ed regerierator 1 can be controlled by controlling the flow r:ai:h switch.ln*:' d'Svice 21 and the cut-off device 23 in accordance v.'iirh the ou':lt:t tem.perarure of the evaporator 7 of cooled water cc:;;ected by the hea*: medium temperature sensor 51 and the retjenerator temperature of a higher one of either of the l.iii-perature of the f^ixhaust gas fired regenerator 1 detected by the fIrr^t regenerator temperature sen;5or 13 and the t::miperature of the cirectly fired regenerator 3 detected by tae regenerator tem.perature censor 35.
Further, the burner 3a of the directly fired regenerator 3 C::n be controlled to increaipe or reduce the combustion amount

i.]] four stages including the stoppage of the burner 3a and the increase o]: 'r/ne reduction in the conbustion amount of the burner f:. Xwessj.vely c.s in the case in which the input amoun": of the ciirsctly fired regenerator is controlled by tv;o stages of {:::O:iL0ust ing and stopping the burner.
Th(irj^::'are, even v/hen the heat amount- or the load of ei:X;'iaust ne.;::: is varied, a total heat input amount to the ::.e:;pecti';e r;:geaera*:or3 1, 3 is difficult to be excsssive, 5-t::>ppage o:' operation by abnormal temperatures of the rc5:'pective ::egenerator3 1, 3, crystallizcition of the absorbent =;olution, corrosion o;; the regenerator can be restrained from be.:.ng brought about and reliability of the absorption ch:.j.ler-heater c^n be promoted.

rurth:ir; there ca^i be restrained variations in );8:aperc=ture t?,nd pressure oi the regenerator in a ccmparatively r^hort peiriod of time which it? brought about when the heat input .■)r:;)unt of ir:e d.irectly fired regenerator i-3 ccntrol3.ed by two ;>t:iges o-: co^i.'ousting and stopping to combust the burner and In a(^;l:--iion tnere'CO/ the heat input amount can be imr-reasei or :':educec by increasing or reducing the conbustion c-m.;.'Unt of th-;^ burnc-jr 3a of the directly fired regenerator 3 m plural irCiages and therefore^ function thereof can be coj'-^roll {?d i-grther finely and accuracy of controlling the fur cticn of cooling or hesting the hee.t i^iediuiri of the absorption c;h.:'-lle:!:-jiea"::er can be promoted in accordance with the increase v.t the rti:d\:ction in the change of the load of the air cor:ditioni::g load or the like or the exhaust heat amount. ru:t:the::, by enabling to promote accuracy of controllinc the f uMccion of co:)ling or heating the heat medium of thc^ absorption c:hiller-he.;it(!;r in correspondence v;ith the change in the load of the air ■::o]".ditioning load or the like or the increase or t h<:- re in the exhaust heat amount air conditioning : .itilet c he si:abili22d further fuel combustion of t oe restrained and energy conservation :: can be promoted-> Fuith^Br, according to the embodiment, the combustion atc.te of "he burner 3a of the directly fired regenerator 3 can

bi:: sv;i';ched in four stages including stoppage of the combustion, jfi.'irthfE^r, ':h':= respective four set temperatures are set in C!.:rre:3ponce:'iCe with the sc^t teraperature in correspondence with ; the cutlet '::eir>cerature of cooled or warmed water from rhe er'}aporator 7 ap.d the regener?.tor temperature. However, a riuniber of stages of ^jwitching the combustion state of the burner. 3mperatur(:::5:i in correspondence with ths outlet temperature of cooled or v^armed water and the set temperatures in oorre.'spondan-e with the regenerator temperature can oc^rtinsntly ::>e set.
(Second Embodiment)
An explanation will be given of 5 second embcdimtent of ;-ir:. abs.:)rpt io3"i chiller-heater constituted by applying the Lnvention :.n reference to Fig. 1/ Figs. 2R and 2B, Fig. 4 and fig. 5 as follows. Fig* 4 is a diagram shewing a control of ■!:h'5 heat input amounts of the exhaust heat fired regenerator ,:Lni:j th€J di::ectly fired regenerator by the outlet temperature (.]f -jooled cr warmed water of the absorbing type water cooling or warming ir.achine constiruted by applying che invention. Fig* :'■'} : s a sch^r-Tiatic view showing a concept of the control of the I'leat input amounts 0:: the exhaust gas fired regenerator and zYm directly fired regenerator by the outlet temperature of ;::;coled water and the regenerator temiperature of the absorption chiller-he^iter constituted by applying the invention.

Furthe;:, according to the embodiment, a constitution or the like Sc.ine as zh^it of the first erabodiraent is attached with the .-jajr.e nc)tat:_cn. and an explanation thereof will be omitted and ; y-xn explanation v;ill :oe giv^^n of a characterizing portion or ■i:ho lil;e wh.ic.h differs froTi that of the first embodiment.
h po.inr of the embodiment which differs from the first r!rfil,)odinent resides in that the combustion amount of the burner !,>rovid Sirrii;.
accordance v.Lth th^^ outlet terr.pera.'cure froni tha evaporator 7 cA: cooled v7a-;:er detected by the hea* medium temperature sensor .31 . At th:..*i: occasion, the control portion 11 is inputted with • ■.:h'2 set tsrrp^rratures Tel, Tc2 when the htist input amount is ..'..ncrea.'sed In steps, set teraperatures Tel', Tc2' when the heat :..r!]rut .r.mount is reduced in steps and set temperatures Tc3, Tc3' : a a range of p::oportionally increasing or reducing the heat input amount as six set temperatures previously set in ■;::03:resp^ondence with the outlet temperature froiri the evaporator 7 '•:■■£ cooled water. Farther, as shovm by Fig, 4, Tcl The c:>r:t:rol portion 11 compares the outlet temperature c;:: cool'Sd waiter detected by the heat medium temperature sensor !:.l and the ^:et temperature and when the outlet temperature of eroded water is equal to or laigher than the set temperature T::2, th^ ccr-trol portion 11 transmits on instruction signals to the flov.' p-iith switching device 21 and tha cut-off device 23 to bring aoout the state in 'which exhaust gas is mads to flow to the fuel control valve 3b of the exhaust g.ss fired regenerator 1 and transmits a combustion instruction signal to the fuel ::;c::itrol valve 3b of the directly fired regenerator

3. Thereby-; there is brought about a state of producing the inputs to both of the? exhaust gas fired regenerator 1 and the directly fired regenerator 3- Even when the outlet i:t;mpe::atur<:: of cooled water is lov so far as the cutlet i:e.mperature equal zo or higher than temperature tc2 stat ir which exhaust gas made flow to gc fired ra and a state in burner dij:ectly regenerator combusted are maintained-l when outlet lo i set th.an s tel less .-..n whicrh o: signals transmitted pc siyitc device ai:ld cuz-off ga h instruction signal fuel ::: valv directly farmer o::: brought into .::. c stop state. thereby there about producing input only .i furt:her l-:jwered be lower off flew p switching cut-off bring does not th gii.5>
■:;.bout a st:h3ust gair^ fired regeners^tor 1 and rhe directly fired i:€;jcjenerator 3.
'••■Jher the out2.et temper^iture of cooied water exc:eeds the oc:I:; t6rip2r-(Bture Tc2 ^md thereafter is equal to or higher than i.:h';: se*: terrperature Tc3' i^md equal to or lower than Tc3, the ■':c.i.'.troL portion 11 carries out a control of ;i\aking exhaust gas tflcw tc; th'?: C'jxhaust gas fired, regenerator 1 and increasing or reunt of. 100-? . Further^ when the outlet temperature of cooled vat.:er is e-qu^l to or higher than the set temperature Tc2' and ie::is than Tc^^' , exhauc5t gas is made to flow to the exhaust heat Jii'ed xeger.e::ator 1 and the burner 3a of the directly fired revienerator- ;: is co:xbusted by a combustion amount of 25%.
i=it tl/::"..:5 occasion, th^: control portion 11 monitors te.'i.peratur':S of the exhaust gas fired regenerator 1 and i:he c:'i:cectly fi::;?d regenerator 3 by the first regenerator i;,e::iiperatur<: sr and the second regenerator teruperature f a: carries out a control of restricting m.aximum>
coiTibustion aiiiount by constituting the regenerator temperature ;;:v' a hi.gher one of either teraperature of temperatuires of the ',!;>: r.aus": gc:-: Ifired regenerator 1 and the. directly fired .ce-rene-ratc r 3 and deter-nnining a rr.aximum combustion liinit of ■;:h'3 bu?:ner .3.;i of the directly fired regenerator 3 previously .:',n];:utted in a!::cordance with the regenerator temperature. E'or exampltB, the :::oni:roi portion 11 is inputted v;ith^ for example, fciar set tenperature^., Tgl, Tg2/ Tg3, Tg When th-^ outlet temperature of cooled water exceeds the set. temperature Tc2 ?.nd thereafter, is equal to or higner than t.h':,. set teirp'?5rature Tc3' and equal to or lower than Tc3, as :;-hr..wn by Fig. 4 and Fig. 5, when the regenerator temperature ;. s less than Tgl, the control portion 11 makes exhaust gas flow-to ':he exhautst gas f:.xed regenerator 1, sets the maximum cori'bustion .'•x'^ount of the turner 3a of "::he directly fired ie::enexato;: 3 to lOO^i and proportionally controls the cQH.bustion c^nouat of the burner 3a of the directly fired recenerator 3 in corresponderice with the outlet temperature

r.'f coo.'.ed v;;i1:er within thc^ range, that is, in a range equal l:o or higher than 25% and equal to or less than 10C%. When t.hs^i ret5ene::.~:fcor temperature is equal to or higher than Tgl and ; .:,.e::>s than ?o2r exhauet aas is made to flov: to ths exhaust gas firad a-egenerator 1/ the inaximurrL combustion amount of the ].:u.i;ner 3a of the directly fired regenerator 3 is restricted iro, for excimple, 70% and the combustion amount of the burner .'■■a of the directly fired regenerator 3 is proportionally c:;0!"',;:roll5d ir. correspondence v/ith the outlet temperature of CO':.led wat(:r within the range, that is^ in a range equal to or jiigher 'ihan 25% and les5: than 70%* When rhe regenerator t;e]ciperatur': i:5 equal to or higher than Tg2 and less than Tg3, e:ic]::.aus": gas i:? made tC' flo'w to the exhaust gas fired regenerator 1, the maximum com.bu;5tion amount of the burner 3a of the directly f:.:::ed regenerator 3 is restricted to, for example, ^0*:; and the cciTLbustion am.ount of the burner 3a of the directly fired regen.erator 3 is proportionally controlled in co:::respond^.rnce with ths outlet temperature of cooled water v.-ithin the rangi-?/ that is, within a range, equal to or higher C '.'-Lc; n 2 5 % a r 1 c;] less t h cm 4 0 % -
Furth-rr, v;hen the regenerator temperature is equal to c;i- higher than Tg3 anci less than Tg4, although the control ]:o.::-tion 11 jTiakes exhausi: gas flow ro the exhaust heat fired r':?c:ener3tor 1, -ihe control portion 11 stops combust:.ng the b::rner 3a of the dir€:ctly fired regenerator 3 by transmitting

a (Combustion stop instruction signal to the burner 3a of the directly fir-Ejd regenerator 3, When che regenerator tejrperatur'=i is equal to or higher than Tg4, off instruction ;:;:i<5 are transmitted tc the flow path switching device bud thi cut-cff davi::e to thereby bring about a state in of exhaust gas heat fired regenerator i. :.s cvit off stai:e v inouts prctduceid and dii:sct regensrator> -Even in such an absorption chiller-heater of the emiiodinient:, an effect similar to that of nhe first embodiment ca;'i. be achieved.
Jurthe::, according to the embodiment, a range of ]^r-::portion.r.lly controlling the combustion amount of the burner ;?a of the direc^ily fired regenerator 3 is set to be e^qual to cr higlier than 25% and equal to or lower than 100% and three si^tages of lirnit values of 40%^ 70%/ 100% are set as the maximum c;or:bus-cion Xxmits of the burner 3a of the directly fired i-^cjenerat-o:: 3- Further, six and eight of the set temp.'eratures in correspondence v^ith the outlet temperature of cooled or via:i:r:ied water from t?:e evaporator 7 and the set temperatures in correspondence with the regenerator temperature ar^ j:'e;;vpectively ;set. However, the range of proportionally c:ontrolling the combustion amount of the burner 3a ox the directly fir^-d regenerator 3, values of the limit values and

nu:r.bero of the set temperatures in correspondence with the outlet teiTiyeirature of cooled or 'warn-ied water and the set ■*:e]nperatur^E:£3 in corresponderice with the regenerator ".'.snperriture csn pertinently be set,
iThird Embodiment)
hn e>:plan.^tion will be given of a third embodimenr of .:in absorption chiller-heat'Sr constituted by applying the inv^ention m reference to Fig. 1, Tig. 6, Fig. 7 and Fig. 8 .r.5 folJ.ows. Fig, 6 is a diagram for explaining a way of <::iet-srmi.ning a set temperature in correspondence with the :re t:errperature inlet te.:nper5tur of ceding water absorption chiller-heater ccri.3tituted by applying invention fig. is diagram ro explaining other way determining teraperature :..n correspijncence generator co.::respond input cooling tb-.-: ab:5orpti::.n constituted in:7ention. fig- ii5 for still cf: j-ecjeneratoj: consjtituted invention. further according to t embodimei-nt con3titution or like sam.e as those cf che first eind second embodiments attached nouation. an explanation thereof will be omirted and>
<: will be given of a characterizing portion or the whiich differs from those fir and second>3dinient^>..
Although the ei*!)bodiri:;ent carrier: out a control similar t:o 'ihoso of "he first and ths second embod:_rr.ents, the embodiment C;!:L:'fers in t.h.z.t an inl'^r temperature to the absorber of cooling v;a":er is defected and the set temperature in correspondence wiiih the rec'i-in.srator temperature is changed in accordance v/ith th»:; inlet iiernperature of cooling water.
For e>:ample^ as shown by Fig. 1, the lower the temtperature of cooling water supplied from the cooling 'v>;ater passage 45 to the absorber 3, that is, the inlet temperature to the ab.sorber 9 o:: cooling v;ater, the lov;er the temperature of the d u:'^ictiy fired regen(=rator 3 and therefcre, the hea- input a:.r-ount until the regenerator temperature reaches a plurality o:i! i'jet Lempt:ratures previously set in correspondence with the r:;5c=:nerator temperature is increased. Therefore^ fuel cor; iump'iior. at the directly fired regener^^tor 3 is increased.
Further, when temperature of cooling ^'7ater supplied from t;ye cooling v.^ater passage to zhe absorber 9/ that is, the inlet to.n',3er3':ure tc the absorber 9 of cooling water is comparatively J r.'w ano the ^vxz conditioning load is comparatively low, ^:r:C(5rding zo the absorption chiller-heaters of the first and t:'.e second =::'.ibodiments, depending on the way of determining trie set temperatures in correspondence with the regenerator

tiMuperature, there is a case in which a reduction in the heat ;;::put anoun-:::^ to the exhaust heat fired regenerator 1 and the d.::::ectly Jiired regenerator 3 is not carried cut even v;hen the • ir^put amoi::rii:s are excessive* When such a state is brought about,, thc-r-: is ^ case in which the concentration of the concentrated solution is concentrated rciore than necessary and :;::-y£talli;!:a-::ion of the absorbent solution or the like is b]:'Ought about-
Ther^^'fore, according to the absorption chiller-heater of the embodiment, as shown by Fig, 1, the control portion 11 •ietects tY.t inlet temperature of cooling water by using the 'reeling med:..L-m terttperature sensor 53 fcr detecting che v:e]rper.atu.r-.;-. c-f cooling water in an inlet porrion of the cooling vja'irer passage 45, Further, as shov/n by Fig. 6, in proportion CO the inlet temperature of cooling v/ater detected by the ootolin.tj medium temperature sensor 53, the sat rempera-cure in r:o:':resi)cndent:e with the regenerator temperature, that is, the set terr.parc.::L-.res Tgl, Tg2, Tg3, Tg4 when the heat input amount :Ls reduced :.n the first and ~he second enbodiments and the set i:.e:;'iperature;= Tgl', Tg2', Tg3' , Tg4' when the heat input amount ;.s incj:easc5c are changed,
In t:li.^ way, by changing the set temperature in ::-o].-respondeno'G v.-ith the regenerator temperature as a linear fu^irjtion of r.he input temperature of cooling water, when the •:..5:nperc;tur?; cf cooling water is lowered, the set temperature

ir. correspondence with the regenerator temperature is also Icv/ered- Thtrrefore, the he£.t input amoant until tha ;,:e cenerator tieinper^iture reaches the plurality of set ■;:;e:T.peratur::.i': previously set in correspondence with the :i;eoanefatC'r temperature can be rastrained from being increased; ;i:'u I^urtlier, there can be restrained a state in vAich a reciuction in the heat input amounts to the exhaust heai: fired .rerjenerato;: 1 and the directly fired regenerator 3 is not t;a3:rieTi being brought about by "he inlet temperature of the cooling v/at.er. Thtt.::■■:= fore, crystallization of the absorbent solution ]:y concensinc the concentration of the concentrated solution nor-2 than nx5ces5:ary can be restrained by the inlet tenperature of the coo].:.ng warer and therefore, reliability of the .■■b:':'Orpt-ion chiller-heater can further be promoted.
lurthej:^ although according to the embodiment, "here is ^h',:v/n a case of changing the set temperature in correspondence V,ii:.h the regenerator temperature in proportion to the inlet t;eu'per.3tur'r of the cooling water, as shown by Fig, 7, the set teiTiperaturtt in correspondence v/ith the regenerator t:er:;peratur(i: can be elevated in steps by setting set t';jr:.peratur(^s Tcol^ Tco2 (TCO1
ar.cl wh'^n t:\e. inlet teraperature of the cooling water becomes :jcaal ■;o cr higher than Tool and becomes equal to or higher ::hBn Tco2, Further^ as shown by Fig. 8, the set temperature .in correspondence with rhe regenerator temperature can also ):)e changed in. proportion to the inlet temperature of the cooling L/aMer detec:t(=:d by the cooling medium temperature isensor 53 bc'.:ween Tcol and Tco2.
Purther, although according to the first through the i;h;"-rd embodinentS; the regenerator temperature is constituted by a hi.gher one of either temperature of "che teniperature of zh^'i exhaust gas fired regenerator i and the directly fired .1 erjene^.-ator 3,. However, sines the xiemperatures of the exhaust ]-.e::t fj.red rc;generator and the directly fired regenerator i::'e:;ome temp'^sratures further proximate to each other by <: i fee solution it is also possible that temperature de iir p.rovided to either one of the temperatures>:i':.aust. hec:i; fired regenerator and the temperature of the diLrectly fi/rtid regenerator and a control is carried out by cori.stitutir..g ':he regenerator temperature by the temp-erature c:;: one of 'zrv^i regenerators provided V7i':h the temperature c'erectcr* In this ciase, the directly fired regenerator is dLiiposeo GV: the downstream side of the exhaust heac fired rs=';:ene:r:aT;o:: with respect to flow o£ the solution and therefore^ ev(.in when f:ea-: is inputted only to the exhaust gas fired I'egenerator, the temperature of the directly fired regenerator

ir. :iica-es a teriiperature substantially the same as that of the
-.^>;hau3': h^.Eit f:,red regenerator. Therefore, when the ■;:e:r:peratur'ti detector is provided to only one of the :i:-eoen'^-;:atc.:s, by providing the temperature detector to the ::ii::ect:.y fired regenerator, the heat input amounts to the :;e In ac::::i Lion tneretO; even when the temperature detector ^■ri; providejci t'o both of the exhaust heat fired regenerator and v..hi'j directly fired regenerator, the control can be carried out i:.o':, only b;/ ::onstituting the regenerator temperature by a hi-::her one :^i: either one of the temperature of the exhaust heat f::,:.:ed reger.;.rator 1 -^no the temperature of the directly fired rEet;jenerator 3 but alsio constituting the regenerator t;er:perature by either one of the temperat:ures of the exhaust he.:it fired --r'^cjenera^or and the directly fired regenerator by other m










7. An absorption chiller-heater substantially as herein described with reference to the accompanying* drawings.


Documents:

091-che-2004-abstract.pdf

091-che-2004-claims duplicate.pdf

091-che-2004-claims original.pdf

091-che-2004-correspondnece-others.pdf

091-che-2004-correspondnece-po.pdf

091-che-2004-description(complete) duplicate.pdf

091-che-2004-description(complete) original.pdf

091-che-2004-drawings.pdf

091-che-2004-form 1.pdf

091-che-2004-form 26.pdf

091-che-2004-form 3.pdf

091-che-2004-form 5.pdf

091-che-2004-other documents.pdf


Patent Number 201354
Indian Patent Application Number 91/CHE/2004
PG Journal Number 08/2007
Publication Date 23-Feb-2007
Grant Date 19-Jul-2006
Date of Filing 06-Feb-2004
Name of Patentee M/S. YAZAKI CORPORATION
Applicant Address 4-28 MITA 1-CHOME, MINATO, TOKYO 108-0073
Inventors:
# Inventor's Name Inventor's Address
1 KODAMA MITSURU C/O YAZAKI CORPORATION, 1370 KOYASU-CHO, HAMAMATSU-SHI, SHIZUOKA
2 SUGIYAMA TAKAHIDE C/O YAZAKI CORPORATION, 1370 KOYASU-CHO, HAMAMATSU-SHI, SHIZUOKA
3 ISHIDA KAZUHIDE C/O YAZAKI CORPORATION, 1370 KOYASU-CHO, HAMAMATSU-SHI, SHIZUOKA
PCT International Classification Number F25B 15/00
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 2003-031240 2003-02-07 Japan