Source: http://www.google.com/patents/US7178354?dq=6437692
Timestamp: 2014-12-20 18:23:00
Document Index: 151402010

Matched Legal Cases: ['arts 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 2', 'art 4']

Patent US7178354 - Enclosure or equipment cabinet and sealing arrangement therefor - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsThe invention relates to a sealing arrangement for an enclosure or equipment cabinet and to an attachable air conditioning device. In order to ensure a watertight, linear sealing of the air distribution spaces with the necessary protection level, sealing frames and seals cooperating therewith and appropriately...http://www.google.com/patents/US7178354?utm_source=gb-gplus-sharePatent US7178354 - Enclosure or equipment cabinet and sealing arrangement thereforAdvanced Patent SearchPublication numberUS7178354 B2Publication typeGrantApplication numberUS 10/490,657PCT numberPCT/EP2002/010944Publication dateFeb 20, 2007Filing dateSep 30, 2002Priority dateOct 18, 2001Fee statusLapsedAlso published asDE10151460C1, EP1437038A1, EP1437038B1, US20050016195, WO2003037055A1Publication number10490657, 490657, PCT/2002/10944, PCT/EP/2/010944, PCT/EP/2/10944, PCT/EP/2002/010944, PCT/EP/2002/10944, PCT/EP2/010944, PCT/EP2/10944, PCT/EP2002/010944, PCT/EP2002/10944, PCT/EP2002010944, PCT/EP200210944, PCT/EP2010944, PCT/EP210944, US 7178354 B2, US 7178354B2, US-B2-7178354, US7178354 B2, US7178354B2InventorsRainer Bretschneider, Lars GallaschOriginal AssigneeKnurr AgExport CitationBiBTeX, EndNote, RefManPatent Citations (23), Referenced by (2), Classifications (9), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetEnclosure or equipment cabinet and sealing arrangement thereforUS 7178354 B2Abstract The invention relates to a sealing arrangement for an enclosure or equipment cabinet and to an attachable air conditioning device. In order to ensure a watertight, linear sealing of the air distribution spaces with the necessary protection level, sealing frames and seals cooperating therewith and appropriately an additional cover are provided between the air conditioning device and the covering part.
wherein the at least one sealing frame and at least one seal provide an IP protection value of at least �5.
With regards to the water resistance of outdoor equipment cabinets or enclosures manufacturers require an IP protection value of at least �5, i.e. the equipment cabinets, which are hereinafter also understood to cover enclosures, must be able to withstand water in jet form and directed from any direction onto the cabinet. Hitherto when screwing down or otherwise connecting or joining air conditioning devices to a covering part of an equipment cabinet, there has been a flat pressing together of seals having a differing cross-section, e.g. a rectangular, semicircular or circular cross-section or combinations thereof, which can be solid or hollow, made from natural or artificial rubber, plastics or foams and which can also be enveloped. This gives rise to large bearing surfaces and associated therewith high contact pressures for a seal, so that unless further protective measures are adopted only protection value IP �4 can be obtained. When forming the necessary corners or angles in the path of the seal additional risks arise for the sealing action in the case of cut seals in corner junctions or through beads when forming corners by bending round sealing profiles or sections.
SUMMARY OF THE INVENTION The object of the invention is to provide a sealing arrangement, which on fitting an air conditioning device to an equipment cabinet ensures the necessary sealing action at least against jet water from a nozzle coming from all directions in order to comply with IP �5.
A watertight connection of IP protection type �5 is also obtained if additionally in the vicinity of the air supply and/or removal openings of the covering part a cover is provided. Said cover is advantageously positioned between the fixing part of the air conditioning device and the covering part of the equipment cabinet and is provided with perforations in the vicinity of the air distribution spaces for air supply or removal purposes. To bring about an unending seal of the air distribution spaces, the sealing frame of the fixing part of the air conditioning device and the sealing frame of the covering part marginally engage on the cover in each case by means of the accompanying seal. Thus, advantageously on both sides of the cover a linear sealing action is brought about and a seal against humidity corresponding to the requirements is ensured.
FIG. 8 A cross-section along line VIII�VIII of FIG. 7.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an equipment cabinet 3 for an outside area with a watertight, upper cover 31, two side panels 32, rear doors 33, whereof one door 33 is opened, and three front doors 34 as covering parts 4. The front doors 34 are shown in the open position and in each case have a heat exchanger as an air conditioning device 7, but this is only shown diagrammatically without air passage openings.
FIG. 4 shows a preferred sealing arrangement of an equipment cabinet, where the covering part 4 is constituted by a door. In the vicinity of the air passage openings 18 of the door leaf 25, which in the present case are in the form of �gills�, an air conditioning device 7 is fitted to the inside. Between the air conditioning device 7 and the covering part 4 is placed a cover 10 running parallel to the door leaf 25 of the covering part 4 and which is air-permeable in the vicinity of the air distribution spaces 5, 6, whereof the air distribution space 5 is shown. With the aid of the cover 10, a sealing frame 12 on the air conditioning device 7 and a sealing frame 14 on the covering part 4, as well as seals 22, 24 cooperating with the sealing frames 12, 14, a watertight, linear sealing of the air distribution spaces 5, 6 and the necessary IP protection level �5 are ensured.
FIG. 4 shows the construction of the fixing struts 15 on the inside of the covering part 4, into which is internally integrated the sealing frame 14 with sealing edge 20. The fixing struts 15 with sealing frame 14 are cross-sectionally approximately U-shaped and provided with a right-angled, inwardly bent fixing flange 16. In the area of the fixing flange 16 the cover 10 and the air conditioning device 7 are fixed with the aid of a fixing frame 11, which is located on the four side panels 9 of the air conditioning device 7. The sealing frame 12 of the air conditioning device 7 is marginally fitted to a fixing part 2 of the air conditioning device 7 and cooperates with the accompanied seal 22 on cover 10. FIG. 4 shows the double linear seal on the inside and outside of the additional cover 10 between the air conditioning device 7 and the covering part 4, which leads to an improved seal against water and in particular of IP protection type �5 or higher or comparable demands made in international standards.
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