WO2010092294A1 - Protection cover for one or more parts having a suction effect air-channelling element, and related housing - Google Patents
Protection cover for one or more parts having a suction effect air-channelling element, and related housing Download PDFInfo
- Publication number
- WO2010092294A1 WO2010092294A1 PCT/FR2010/050213 FR2010050213W WO2010092294A1 WO 2010092294 A1 WO2010092294 A1 WO 2010092294A1 FR 2010050213 W FR2010050213 W FR 2010050213W WO 2010092294 A1 WO2010092294 A1 WO 2010092294A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air
- mai
- main wall
- air inlet
- cover
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20536—Modifications to facilitate cooling, ventilating, or heating for racks or cabinets of standardised dimensions, e.g. electronic racks for aircraft or telecommunication equipment
- H05K7/206—Air circulating in closed loop within cabinets wherein heat is removed through air-to-air heat-exchanger
Definitions
- some parts that radiate heat are relatively fragile and must therefore be protected by a protective cover or by a housing comprising, for example, a base or a support piece and a protective cover secured to one another (possibly by clipping).
- the invention therefore aims to improve the situation by means of a passive solution (that is to say which does not consume electrical energy).
- This protective cover is characterized in that its aeration means comprise at least one air channeling element protruding above the general level of an outer face of its main wall and having a so-called lower end which is provided with an air inlet communicating with an internal zone located behind an inner face of the main wall, opposite to the outer face, and an upper end which is provided with an air outlet communicating with the internal zone and intended, once the hood is installed, to be located at a level higher than that of the air inlet to induce a suction effect of clean air to promote the evacuation of heat radiated heat convection.
- the protective cover according to the invention may comprise other features that can be taken separately or in combination, and in particular:
- the air intake area may be at least 40% greater than the air expulsion surface
- each air duct element may comprise a section transverse of substantially rectangular shape
- FIG. 1 schematically illustrates, in a sectional view in a plane containing the vertical direction (DV), an exemplary embodiment of a housing comprising a protective cover according to the invention
- FIG. 2 schematically illustrates, in a front view of the side of the lower side wall, the casing of FIG. 1, and
- the protective cover (CP) is part of a housing (B) intended to house and protect at least one piece (Cl) of printed circuit type ( or PCB). But, the invention is not limited to this type of room. It concerns indeed any type of radiating part of the heat and to be protected by at least one protective cover.
- the protective cover (and thus the housing (B)) is intended to be part of a vehicle, for example of the automotive type (such as example a car). But, the invention is not limited to this application.
- FIG. 1 and 2 show an embodiment of a protective cover CP according to the invention.
- the protective cover CP is secured to a base (or part support (s)) EM with which it constitutes a housing B.
- This connection can be done by any means known to the man of art, and in particular by clipping or screwing.
- the piece Cl here a printed circuit comprising in particular electronic components CE
- the piece Cl can be fixed to the protective cover CP.
- the main wall PP is provided with ventilation means MAi and intended, once the protective cover CP has been installed in a system (here a car), to be placed opposite the room Cl (here a printed circuit) and in a vertical direction DV or an inclined direction.
- the ventilation means MAi comprise at least one air channeling element which protrudes above the general level of an outer face FE of the main wall PP, opposite to an internal face F1 oriented towards the piece C1.
- the invention is not limited to this number (3) of air channeling elements MAi. It requires in fact that the main wall PP is provided with at least one air channeling element.
- the ventilation means MAi may comprise one or two salient air channeling elements MAi, or even more than three (for example four or five).
- the air channeling elements MAi are substantially parallel to each other, and moreover substantially identical. But, this is not mandatory. They could indeed be different from each other and / or be oriented in slightly different ways. Thus, at least one of their dimensions along the three directions of space could vary.
- Each air duct element MAi has two ends
- the lower end E1 is provided with an air inlet EA which communicates with an internal zone Z1 which is located behind the inner face Fl of the main wall PP and which contains the piece C1.
- the upper end E2 is provided with an air outlet SA which also communicates with the internal zone Z1.
- the air outlet SA of an air duct element MAi is located at a level which is higher than that of the EA air inlet of the same air duct element MAi. There is therefore a pressure difference between the air outlet SA and the air inlet EA which induces an air suction effect similar to that which exists in a chimney.
- the fresh outside air enters the internal zone Z1 with each air inlet EA, absorbs by thermal convection the calories carried by the internal air which has been heated by the radiation produced by the piece C1, and is expelled as heated air out of the protective cap CP, via each air outlet SA.
- the inlet EA air has an air intake surface greater than the air expelling surface of the air outlet SA.
- the air expulsion surface of the air outlet SA is shown in dotted lines because this figure is a front view of the side of the lower side wall PLI (and therefore on the side of the EA air inlet). It will be understood that this surface difference between the input EA and the output SA is intended to create a vacuum which induces an aspiration (and therefore an acceleration of the air flow).
- the air inlet area of the air inlet EA may be at least 40% greater than the air expelling surface of the air outlet SA. Preferably, it is chosen greater than at least 50%.
- the EA air inlet and the SA air outlet are not necessarily placed substantially one above the other (i.e. substantially vertically aligned once installed) as shown. Indeed, we can consider that they are slightly offset in a substantially horizontal direction. Thus, it may be advantageous for the air outlet SA to be shifted forward with respect to the air inlet EA.
- each air duct element MAi is arranged in the form of a cylindrical duct of rectangular cross section.
- the transverse section may have other shapes than the rectangular shape (for example square or semi-circular or semi-elliptical), and an air channeling element MAi may not be cylindrical (its shape may indeed to be curvilinear, for example).
- the largest side of the rectangle has an extension much greater than the smaller side of this rectangle. For example, an extension ratio of between about 2 and about 5 may be envisioned.
- each air duct element MAi may optionally have a shape suitable for inducing a Venturi type effect.
- each air duct element MAi may have at least one narrowing located between its lower ends E1 and upper E2. Such a narrowing is intended to induce an acceleration of the air flow.
- each grid G may be an insert or may be an integral part of an EA air inlet or an air outlet SA.
- This grid can be in any form since it allows to intercept foreign bodies whose size is less than a chosen threshold.
- the grid G comprises a square grid, but it could comprise a rectangular grid or diamond, or include circular holes or elliptical.
- the protective cover CP according to the invention may advantageously be made of plastic or synthetic material, for example by molding by means of a mold (the complexity of which may be limited when the air channeling elements have relatively simple shapes, for example of the type illustrated in Figures 1 to 3).
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010800078044A CN102450114A (en) | 2009-02-13 | 2010-02-09 | Protection cover for one or more parts having a suction effect air-channelling element, and related housing |
BRPI1005954A BRPI1005954A2 (en) | 2009-02-13 | 2010-02-09 | protective hood of parts having suction air duct elements and associated housing |
EP10708313A EP2397021A1 (en) | 2009-02-13 | 2010-02-09 | Protection cover for one or more parts having a suction effect air-channelling element, and related housing |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0950922A FR2942367B1 (en) | 2009-02-13 | 2009-02-13 | PROTECTIVE COVER FOR PIECE (S) WITH SUCTION EFFECT AIR-PIPING ELEMENTS (S) AND CASING THEREFOR |
FR0950922 | 2009-02-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010092294A1 true WO2010092294A1 (en) | 2010-08-19 |
Family
ID=41010849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2010/050213 WO2010092294A1 (en) | 2009-02-13 | 2010-02-09 | Protection cover for one or more parts having a suction effect air-channelling element, and related housing |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2397021A1 (en) |
CN (1) | CN102450114A (en) |
BR (1) | BRPI1005954A2 (en) |
FR (1) | FR2942367B1 (en) |
WO (1) | WO2010092294A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9976762B2 (en) * | 2013-03-14 | 2018-05-22 | General Electric Company | Synthetic jet driven cooling device with increased volumetric flow |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2744664A1 (en) * | 1977-10-04 | 1979-04-05 | Leopold Weinlich | Dustproof sealed housing for heat generating electric devices - has heat exchanger consisting of part of wall or door, provided with ribs and cover |
US4365288A (en) * | 1979-03-02 | 1982-12-21 | Carr-Griff | Electric power converter for recreational vehicle |
EP1237246A1 (en) * | 2001-03-01 | 2002-09-04 | Siemens Aktiengesellschaft | Housing for a gas insulated switchgear with a heat exchanger |
US20070146989A1 (en) * | 2005-12-28 | 2007-06-28 | I-Wen Su | Water-proof housing for electronic equipment |
-
2009
- 2009-02-13 FR FR0950922A patent/FR2942367B1/en not_active Expired - Fee Related
-
2010
- 2010-02-09 EP EP10708313A patent/EP2397021A1/en not_active Withdrawn
- 2010-02-09 CN CN2010800078044A patent/CN102450114A/en active Pending
- 2010-02-09 BR BRPI1005954A patent/BRPI1005954A2/en not_active IP Right Cessation
- 2010-02-09 WO PCT/FR2010/050213 patent/WO2010092294A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2744664A1 (en) * | 1977-10-04 | 1979-04-05 | Leopold Weinlich | Dustproof sealed housing for heat generating electric devices - has heat exchanger consisting of part of wall or door, provided with ribs and cover |
US4365288A (en) * | 1979-03-02 | 1982-12-21 | Carr-Griff | Electric power converter for recreational vehicle |
EP1237246A1 (en) * | 2001-03-01 | 2002-09-04 | Siemens Aktiengesellschaft | Housing for a gas insulated switchgear with a heat exchanger |
US20070146989A1 (en) * | 2005-12-28 | 2007-06-28 | I-Wen Su | Water-proof housing for electronic equipment |
Also Published As
Publication number | Publication date |
---|---|
FR2942367B1 (en) | 2011-04-08 |
CN102450114A (en) | 2012-05-09 |
FR2942367A1 (en) | 2010-08-20 |
EP2397021A1 (en) | 2011-12-21 |
BRPI1005954A2 (en) | 2018-04-10 |
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