Title of Invention	PLANAR COMPONENT WITH A VENT
Abstract	A planar component (2) containing vents for the supply of cooling air, which is particularly suitable as the wall of a door or housing for switch cabinets or the control panels of switching systems. The component (2) contains web-type elements (3) which are produced by deformations and which are offset in relation to the plane of the component (2) in order to form said vent, said elements respectively forming an open slit (4;5) on both sides in the longitudinal direction thereof. The deformation or stamping is carried out in such a way that it is impossible for foreign bodies having dimensions of less than 1 mm to pass through.

Title of Invention

PLANAR COMPONENT WITH A VENT

Abstract

A planar component (2) containing vents for the supply of cooling air, which is particularly suitable as the wall of a door or housing for switch cabinets or the control panels of switching systems. The component (2) contains web-type elements (3) which are produced by deformations and which are offset in relation to the plane of the component (2) in order to form said vent, said elements respectively forming an open slit (4;5) on both sides in the longitudinal direction thereof. The deformation or stamping is carried out in such a way that it is impossible for foreign bodies having dimensions of less than 1 mm to pass through.

Full Text	Description Planar component with a vent The invention relates to a planar component which is formed as a door or wall element or a switCh cabinet or control panel of an electrical switching system fitted with devices that generate heat and has a number of parallel slit-shaped vents for supplying cooling air which are dimensioned such that foreign bodies of a size of 1 mm or more cannot enter. A component of the said type is disclosed by DE 43 39 383 Al. This discusses in detail the difficulties of combining an adequate cooling effect with high requirements for protection from the penetration of foreign bodies in accordance with protection class IP4 (or now IP4X). On the basis of an earlier solution, that of placing a wire mesh behind vents, the arrangement behind the venting slits of a covering part formed as a plastic injection molding is described. This arrangement is based on the idea that vents can only be cost-effectively produced in metal ( sheets of a thickness suitable for switching systems up to a protection class of IP3X. From a material thickness greater than 1.5 mm the, customary working methods, such as for example stamping, are top .complex in production engineering terms for a protection class such as IP4X, with openings of less than 1 mm. The object of the present invention is to take a component corresponding to DE 43 39 383 Al as a basis for providing a component which has a slit-shaped vent for supplying cooling air that can be produced with only a low level of complexity in producticr. engineering terms and with little expenditure of material, but at the same time fully allows for the technical requirements, that is good through-ventilation and foreign body protection against foreign bodies which are of a size of 1 mm or more. This object is achieved according to the invention by the slit-shaped vents being formed by webs which are produced by means of deformation, protrude from the plane of the component by no more than 1 mm and in tReTr longitudinal direction form a slit-shaped opening on both sides. Deformation is understood in the present context as meaning all suitable shaping methods of working, for example in the case of metal sheets the known" cutting-stamping methods and in the case of plastics the processing by the injection-molding method or, on the basis of planar plastic sheets, cutting and stamping with or without application of heat. For the invention it is essential that the stamped-out, raised webs together form an adequate vent in spite of their small distance from the plane of the component. In this respect, the number of webs, and consequently the number of vents, is dependent on the air-throughput recruirements. It is therefore expedient respectively Co arrange a number of webs in a group of webs, and, depending on the required air throughput, a number of groups of webs may be provided next to one another and above one another in a suitable configuration. It has proven to be advantageous in particular if a number of groups of webs are arranged in the component in a linear row. If the width of the webs and the distance between the webs is chosen to be as small as possible in production "engineering terms, a ratio 61 venting cross section to the overall surface area of the component of approximately 50% can be achieved. The arrangement of the webs, and consequently of the vents, is possible both horizontally and vertically. The solution according to the invention provides one piece components which can be used as a door or housing wall, allow protection class IPX4 to be attained {foreign body protection equal to or greater than 1 mm) and, unlike vents with a wire mesh, cannot be penetrated by a sharp object. Nevertheless, a similarly large passing-through area as in the case of a wire mesh is achieved. DE 32 14 823 Al already discloses in the case of a ventilation grille for device housings intended for receiving electronic subassemblies the idea of pushing strips bounded by slits out of a plate parallel to the plane of the plate. These venting slits are made in a plate provided with ribs by the ribs and venting slits alternating with one another. The strips or webs are lifted out of the plane of the plate by 4 mm. As a result, the known ventilation grille obviously cannot be used for power engineering switch cabinets and switching systems, since protection from the penetration of foreign bodies of a size greater than 1 mm is not ensured. For better understanding, the invention is to be explained in more detail below on the basis of a preferred exemplary embodiment, not restricting the extent of protection. Figure 1 shows a group of webs according to the present invention in a component which can be used as a door or housing wall. Figure 2 shows a sectional representation of a web according to the present invention along the line II-II in Figure 1. Figure 3 shows a first possible embodiment of the arrangement of groups of webs according to the present invention in a component which can be used as a door or housing wall. Figure 4 shows a further possible embodiment of the arrangement of groups of webs according to the present invention in a component provided as a door or housing wall. Figure 1 shows a group of webs 1 according to the present invention in a component 2, which can be used as a door or as a housing wall of a switch cabinet or control panel of a switching system. The webs 3 oXJthe group of webs 1 are produced by local deformation of the Component 2 in the manner of stamping in such a way that there is an open slit 4; 5 on each of both sides in the longitudinal direction. In this case, the width B of the web 3 and the distance A between the webs 3 is chosen to be as small as possible in production engineering terms. As a result, a ratio of venting cross section to used surface area of the component 2 (door or housing wall) of approximately 50% can be achieved. Figure 2 shows a sectional representation of a web according to the present invention along the line II-II in Figure 1. The web 3 has been pressed out (stamped) from the component 2 by the height H. This height H, which defines the size of the vent, is fixed on both sides of the webs 3 by the height of the deformation less the material thickness D. Figure 3 shows a first possible embodiment of an arrangement 6 of groups of webs according to the present invention in a component 2. The number of groups of webs 1 is dependent on the required air throughput. In the present example, a total of twelve groups of webs 1 are arranged in an arrangement of four groups of webs 1 next to one another and three groups of webs 1 above one another. The webs 3 are in this case arranged horizontally. Figure 4 shows a further possible embodiment of an arrangement 7 of groups of webs according to the present invention in a component 2. Here, too, it is the case that the number of groups of webs 1 is determined by the required air throughput. In this example also, a total of twelve groups of webs 1 are arranged in an arrangement of four groups of webs 1 next to one another and three groups of webs 1 above one another. However, the webs 1 are in this case arranged vertically. Apart from the type of construction, which is simple in production engineering terms and saves material, the advantages of the solution according to the invention are in particular that this type of production is not restricted by the material thickness, as in the case of stamping, and that no additional parts are required. Furthermore, direct penetration of the component at right angles is not possible, because an attack occurring in this direction, for example by an accidental arc or a tool or foreign body, is effectively repelled by the webs. Patont claima- WE CLAIM 1. A planar component (2) which is formed as a door or wall element of a switch cabinet or control panel of an electrical switching system fitted with devices that generate heat and has a number of parallel slit-shaped vents for supplying cooling air which are dimensioned such that foreign bodies of a size of 1 mm or more cannot enter, characterized in that the slit-shaped vents are formed by webs (3) which are produced by means of deformation, protrude from the plane of the component (2) by no more than 1 mm and in their longitudinal direction form a slit-shaped opening on both sides. 2. The component as claimed in claim 1, characterized in that, to ensure the required air throughput, a number of webs (3) are arranged in a group of webs (1) . 3. The component as claimed in claim 2, characterized in that a number of groups of webs (1) are provided next to one another and above one another. 4. The component as claimed in claim 2 or 3, characterized in that a number of groups of webs (1) are arranged in a linear row. 5. The component as claimed in one of the preceding claims, characterized in that the ratio of the total venting cross section to the overall surface area of the component (2) is approximately 50%. The component as claimed in one of the preceding claims, characterized in that the webs (3) are arranged horizontally. The component as claimed in one of the preceding claims, characterized in that the webs (3) are arranged vertically. A planar component (2) containing vents for the supply of cooling air, which is particularly suitable as the wall of a door or housing for switch cabinets or the control panels of switching systems. The component (2) contains web-type elements (3) which are produced by deformations and which are offset in relation to the plane of the component (2) in order to form said vent, said elements respectively forming an open slit (4;5) on both sides in the longitudinal direction thereof. The deformation or stamping is carried out in such a way that it is impossible for foreign bodies having dimensions of less than 1 mm to pass through.

Full Text

Description
Planar component with a vent
The invention relates to a planar component which is
formed as a door or wall element or a switCh cabinet or
control panel of an electrical switching system fitted
with devices that generate heat and has a number of
parallel slit-shaped vents for supplying cooling air
which are dimensioned such that foreign bodies of a
size of 1 mm or more cannot enter.
A component of the said type is disclosed by DE
43 39 383 Al. This discusses in detail the
difficulties of combining an adequate cooling effect
with high requirements for protection from the
penetration of foreign bodies in accordance with
protection class IP4 (or now IP4X). On the basis of an
earlier solution, that of placing a wire mesh behind
vents, the arrangement behind the venting slits of a
covering part formed as a plastic injection molding is
described. This arrangement is based on the idea that
vents can only be cost-effectively produced in metal (
sheets of a thickness suitable for switching systems up
to a protection class of IP3X. From a material
thickness greater than 1.5 mm the, customary working
methods, such as for example stamping, are top .complex
in production engineering terms for a protection class
such as IP4X, with openings of less than 1 mm.

The object of the present invention is to take a
component corresponding to DE 43 39 383 Al as a basis
for providing a component which has a slit-shaped vent
for supplying cooling air that can be produced with
only a low level of complexity in producticr.
engineering terms and with little expenditure of
material,

but at the same time fully allows for the technical
requirements, that is good through-ventilation and
foreign body protection against foreign bodies which
are of a size of 1 mm or more.
This object is achieved according to the invention by
the slit-shaped vents being formed by webs which are
produced by means of deformation, protrude from the
plane of the component by no more than 1 mm and in
tReTr longitudinal direction form a slit-shaped opening
on both sides. Deformation is understood in the
present context as meaning all suitable shaping methods
of working, for example in the case of metal sheets the
known" cutting-stamping methods and in the case of
plastics the processing by the injection-molding method
or, on the basis of planar plastic sheets, cutting and
stamping with or without application of heat.
For the invention it is essential that the stamped-out,
raised webs together form an adequate vent in spite of
their small distance from the plane of the component.
In this respect, the number of webs, and consequently
the number of vents, is dependent on the air-throughput
recruirements. It is therefore expedient respectively
Co arrange a number of webs in a group of webs, and,
depending on the required air throughput, a number of
groups of webs may be provided next to one another and
above one another in a suitable configuration. It has
proven to be advantageous in particular if a number of
groups of webs are arranged in the component in a
linear row.
If the width of the webs and the distance between the
webs is chosen to be as small as possible in production
"engineering terms, a ratio 61 venting cross section to
the overall surface area of the

component of approximately 50% can be achieved.
The arrangement of the webs, and consequently of the
vents, is possible both horizontally and vertically.
The solution according to the invention provides one
piece components which can be used as a door or housing
wall, allow protection class IPX4 to be attained
{foreign body protection equal to or greater than 1 mm)
and, unlike vents with a wire mesh, cannot be
penetrated by a sharp object. Nevertheless, a
similarly large passing-through area as in the case of
a wire mesh is achieved.
DE 32 14 823 Al already discloses in the case of a
ventilation grille for device housings intended for
receiving electronic subassemblies the idea of pushing
strips bounded by slits out of a plate parallel to the
plane of the plate. These venting slits are made in a
plate provided with ribs by the ribs and venting slits
alternating with one another. The strips or webs are
lifted out of the plane of the plate by 4 mm. As a
result, the known ventilation grille obviously cannot
be used for power engineering switch cabinets and
switching systems, since protection from the
penetration of foreign bodies of a size greater than
1 mm is not ensured.
For better understanding, the invention is to be
explained in more detail below on the basis of a
preferred exemplary embodiment, not restricting the
extent of protection.
Figure 1 shows a group of webs according to the present
invention in a component which can be used as a door or
housing wall.

Figure 2 shows a sectional representation of a web
according to the present invention along the line II-II
in Figure 1.
Figure 3 shows a first possible embodiment of the
arrangement of groups of webs according to the present
invention in a component which can be used as a door or
housing wall.
Figure 4 shows a further possible embodiment of the
arrangement of groups of webs according to the present
invention in a component provided as a door or housing
wall.
Figure 1 shows a group of webs 1 according to the
present invention in a component 2, which can be used
as a door or as a housing wall of a switch cabinet or
control panel of a switching system. The webs 3 oXJthe
group of webs 1 are produced by local deformation of
the Component 2 in the manner of stamping in such a way
that there is an open slit 4; 5 on each of both sides
in the longitudinal direction. In this case, the width
B of the web 3 and the distance A between the webs 3 is
chosen to be as small as possible in production
engineering terms. As a result, a ratio of venting
cross section to used surface area of the component 2
(door or housing wall) of approximately 50% can be
achieved.
Figure 2 shows a sectional representation of a web
according to the present invention along the line II-II
in Figure 1. The web 3 has been pressed out (stamped)
from the component 2 by the height H. This height H,
which defines the size of the vent, is fixed on both
sides of the webs 3 by the height of the deformation
less the material thickness D.

Figure 3 shows a first possible embodiment of an
arrangement 6 of groups of webs according to the
present invention in a component 2. The number of
groups of webs 1 is dependent on the required air
throughput. In the present example, a total of twelve
groups of webs 1 are arranged in an arrangement of four
groups of webs 1 next to one another and three groups
of webs 1 above one another. The webs 3 are in this
case arranged horizontally.
Figure 4 shows a further possible embodiment of an
arrangement 7 of groups of webs according to the
present invention in a component 2. Here, too, it is
the case that the number of groups of webs 1 is
determined by the required air throughput. In this
example also, a total of twelve groups of webs 1 are
arranged in an arrangement of four groups of webs 1
next to one another and three groups of webs 1 above
one another. However, the webs 1 are in this case
arranged vertically.
Apart from the type of construction, which is simple in
production engineering terms and saves material, the
advantages of the solution according to the invention
are in particular that this type of production is not
restricted by the material thickness, as in the case of
stamping, and that no additional parts are required.
Furthermore, direct penetration of the component at
right angles is not possible, because an attack
occurring in this direction, for example by an
accidental arc or a tool or foreign body, is
effectively repelled by the webs.

Patont claima-
WE CLAIM
1. A planar component (2) which is formed as a door or
wall element of a switch cabinet or control panel
of an electrical switching system fitted with
devices that generate heat and has a number of
parallel slit-shaped vents for supplying cooling
air which are dimensioned such that foreign bodies
of a size of 1 mm or more cannot enter,
characterized in that the slit-shaped vents are
formed by webs (3) which are produced by means of
deformation, protrude from the plane of the
component (2) by no more than 1 mm and in their
longitudinal direction form a slit-shaped opening
on both sides.
2. The component as claimed in claim 1, characterized
in that, to ensure the required air throughput, a
number of webs (3) are arranged in a group of webs
(1) .
3. The component as claimed in claim 2, characterized
in that a number of groups of webs (1) are provided
next to one another and above one another.
4. The component as claimed in claim 2 or 3,
characterized in that a number of groups of webs
(1) are arranged in a linear row.
5. The component as claimed in one of the preceding
claims, characterized in that the ratio of the
total venting cross section to the

overall surface area of the component (2) is
approximately 50%.
The component as claimed in one of the preceding
claims, characterized in that the webs (3) are
arranged horizontally.
The component as claimed in one of the preceding
claims, characterized in that the webs (3) are
arranged vertically.

A planar component (2) containing vents for the supply of cooling air,
which is particularly suitable as the wall of a door or housing for switch
cabinets or the control panels of switching systems. The component (2)
contains web-type elements (3) which are produced by deformations and
which are offset in relation to the plane of the component (2) in order to
form said vent, said elements respectively forming an open slit (4;5) on
both sides in the longitudinal direction thereof. The deformation or
stamping is carried out in such a way that it is impossible for foreign
bodies having dimensions of less than 1 mm to pass through.

Documents:

238-KOLNP-2004-(21-11-2012)-FORM-27.pdf

238-KOLNP-2004-CORRESPONDENCE 1.1.pdf

238-KOLNP-2004-FORM-27.pdf

238-kolnp-2004-granted-abstract.pdf

238-kolnp-2004-granted-claims.pdf

238-kolnp-2004-granted-correspondence.pdf

238-kolnp-2004-granted-description (complete).pdf

238-kolnp-2004-granted-drawings.pdf

238-kolnp-2004-granted-examination report.pdf

238-kolnp-2004-granted-form 1.pdf

238-kolnp-2004-granted-form 18.pdf

238-kolnp-2004-granted-form 2.pdf

238-kolnp-2004-granted-form 3.pdf

238-kolnp-2004-granted-form 5.pdf

238-kolnp-2004-granted-gpa.pdf

238-kolnp-2004-granted-reply to examination report.pdf

238-kolnp-2004-granted-specification.pdf

238-kolnp-2004-granted-translated copy of priority document.pdf

238-KOLNP-2004-PA.pdf

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Patent Number

230181

Indian Patent Application Number

238/KOLNP/2004

PG Journal Number

09/2009

Publication Date

27-Feb-2009

Grant Date

25-Feb-2009

Date of Filing

19-Feb-2004

Name of Patentee

SIEMENS AKTIENGESELLSCHAFT

Applicant Address

WITTELSBACHERPLATZ 2, 80333 MUNCHEN

Inventors:

#	Inventor's Name	Inventor's Address
1	GOHLICKE, KAY	DINTERSTR. 34, 04157 LEIPZIG

PCT International Classification Number

H02B

PCT International Application Number

PCT/DE02/03587

PCT International Filing date

2002-09-09

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	10145830.4	2001-09-10	Germany