Cooler for fitting to the rear or side wall or the door of a swi

Details Cooler for fitting to the rear or side wall or the door of a swi Cooler for fitting to the rear or side wall or the door of a swi

1998-09-14

2000-05-23

Picard, Leo P.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electrical power distribution systems and devices

361678, 361687, 361688, 361690, 361704, 174 161, 16510433, 165185, 454184, H02B 100

Patent

active

060672234

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

1. Field of the Invention
This invention relates to a cooling device, which can be installed in place of a rear wall, lateral wall or door of a switchgear cabinet and which can be brought in connection with the rear wall, the lateral wall or the door via an inlet opening and an outlet opening of an interior cycle.
2. Description of Prior Art
Such cooling devices are only laid out as heat exchangers and the separation between the interior air circulation cycle and the exterior air circulation cycle always presents difficulties. If this separation is not complete, the entry of moisture into the switchgear cabinet cannot always be unambiguously prevented. These difficulties increase considerably if the switchgear cabinet with the cooling device is placed in the open, since protection against rain and dirt particles is added.


SUMMARY OF THE INVENTION

It is one object of this invention to considerably improve protection of the heat exchanger of a cooling device of the type mentioned against condensation water, rain and dirt particles.
In accordance with this invention this object is attained with a cooling device housing that has, besides a central ventilating shaft which is open at the top, laterally thereof vertical ventilating chambers, open at the top, of an exterior cycle which is hermetically separated from the interior cycle. The top of the switchgear cabinet and the cooling device housing is covered by a roof element at a distance therefrom, which projects past the switchgear cabinet and the cooling device housing on all sides and leaves a ventilating slit, which is open toward the bottom, on all sides. The roof element is divided into chambers by separating sheet metal panels, which are in contact with the ventilating shaft and the two ventilating chambers of the cooling device housing. The roof element provides sufficient protection from rain and dirt particles and with the divided chambers the roof element is included in the ventilating cycle.
In accordance with a further embodiment, the rain protection can still be improved because the roof element has a circumferential edge which is angled downward and which partially extends into the area of the lateral walls of the switchgear cabinet and the cooling device housing. The rainwater drips off easier because the roof element has a horizontally oriented cover plate which makes a transition into the edge via inclined downward extending transition sections, and the corners of the roof clement are beveled in the area of the edge and of the transition sections.
An embodiment matched to the cross-sectional shape is distinguished because a switchgear cabinet is rectangular in shape, the separating walls of the roof element are aligned symmetrically and parallel with the vertical center plane of the switchgear cabinet extending from the front to the rear of the switchgear cabinet, and extend from the rear of the cooling device housing as far as the front of the switchgear cabinet.
The formation of a circumferential ventilating slit is achieved in accordance with one embodiment because the roof element is connected by spacers with the top of the switchgear cabinet and/or the cooling device housing.
A complete uncoupling of the chambers of the roof element is achieved because the separating sheet metal plates are matched to the interior cross section of the roof element and are supported on the top of the switchgear cabinet and the cooling device housing.


BRIEF DESCRIPTION OF THE DRAWINGS

This invention will be explained in more detail by means of an exemplary embodiment represented in the drawings wherein:
FIG. 1 is a schematic perspective view of a switchgear cabinet with a rear wall embodied as a cooling device and with a roof element placed thereon; and
FIG. 2 is a schematic top view of the roof element with the chambers and the ventilating paths.


DESCRIPTION OF PREFERRED EMBODIMENTS

Only the frame of the switchgear cabinet 10 is shown in FIG. 1. The frame 10 defines a polyhedron having framing members for at least a fr

REFERENCES:
patent: 3120166 (1964-02-01), Lyman
patent: 5467250 (1995-11-01), Howard et al.
patent: 5544012 (1996-08-01), Koike
patent: 5657641 (1997-08-01), Cunningham et al.
patent: 5801331 (1998-09-01), Zachrai

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