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

• US 6,067,223 A
• Filed: 09/14/1998
• Issued: 05/23/2000
• Est. Priority Date: 03/13/1996
• Status: Expired due to Fees

• Current Assignee: Rittal-Werk Rudolf Loh Gmbh & Co. Kg
• Original Assignee: Rittal-Werk Rudolf Loh Gmbh & Co. Kg
• Inventors: Edelmann, Achim, Nicolai, Walter, Strackbein, Heinrich, Diebel, Michael
• Primary Examiner(s): Picard, Leo P.
• Assistant Examiner(s): CHERVINSKY, BORIS LEO
• Application Number:
  US09/142,752
• Time in Patent Office: 617 Days
• Field of Search: 361/676, 361/678, 361/605, 361/724, 361/690, 361/695, 174/16.1, 174/16.2, 165/104.33, 165/104.34, 165/185, 454/184, 454/185, 454/186
• US Class Current: 361/676
• CPC Class Codes: H02B 1/56 Cooling; Ventilation
• CPC Class Codes: H02B 1/565 for cabinets
• CPC Class Codes: H05K 7/206 Air circulating in closed loop within cabinets wherein heat is removed through air-to-air heat-exchanger

Abstract

A cooler which can be fitted on a rear wall or a side wall or a door of a switching cabinet and can be connected thereto via an intake and an inlet aperture of an internal circuit. According to the invention, rain and dustproofing is improved because alongside a central ventilation shaft open at the top, the cooler housing has vertical ventilation chambers open at the top as part of an external circuit hermetically separated from the internal circuit, the top of the switching cabinet and cooler housing is covered by a roofing component spaced therefrom which projects on all sides beyond the control box and the cooler housing and leaves a peripheral ventilation slot opening downwards. The roofing component is divided by two partitions into three chambers which communicate with the ventilation shaft and both ventilation chambers in the cooler housing.

Claims

1. A switch gear cabinet comprising:

a) a cabinet frame defining space for four vertical walls including a front, a rear, and first and second lateral walls, and defining a horizontal top and bottom of the cabinet,

b) a cooling device installed as one of the vertical walls of the switchgear cabinet,

the cooling device having a polyhedral housing (20) having a front wall, a rear wall, and first and second side walls enclosing a central ventilating shaft (24) open at a top thereof, and lateral to the ventilating shaft at least two vertical ventilating chambers (22,

     23) open at the top;

c) a roof element covering the top of the switchgear cabinet (10) and the cooling device housing (20),

the roof element (30) being spaced at a distance therefrom, the roof element projecting past the switchgear cabinet (10) and the cooling device housing (20) on all sides and forming a ventilating slit open toward the cabinet bottom on all sides, and

the roof element (30) being divided into at least three chambers (33, 34,

     39) by at least two separating walls (31,

     32), the chambers communicating with the ventilating shaft (24) and the two ventilating chambers (22,

     23) of the cooling device housing (20), respectively;

whereby the central shaft and the lateral chambers are hermetically separated.

2. The switchgear cabinet in accordance with claim 1, wherein the roof element (30) has a circumferential edge (45) angled downward and which partially extends into, and covers, an area of the lateral walls of the switchgear cabinet (10) and the cooling device housing (20).

3. The switchgear cabinet in accordance with claim 2, wherein the switchgear cabinet frame (10) is a rectangular faced polyhedron and the separating walls (31, 32) of the roof element (30) are aligned symmetrically and parallel with a vertical center plane of the switchgear cabinet (10) and the separating walls extend from a rear wall of the cooling device housing (20) to the opposing parallel wall of the switchgear cabinet (10).

4. The switchgear cabinet in accordance with claim 3, wherein the roof element (30) is connected by spacers with at least one of the top of the switchgear cabinet frame (10) and the cooling device housing (20).

5. The switchgear cabinet in accordance with claim 4, wherein the roof element (30) has a horizontally oriented cover plate (43) which makes a transition into the circumferential edge (45) via a plurality of inclined downward extending transition sections (44).

6. The switchgear cabinet in accordance with claim 5, wherein corners of the roof element (30) are beveled in an area of the circumferential edge (45) and of the transition sections (44).

7. The switchgear cabinet in accordance with claim 6, wherein the separating walls (31, 32) are matched to an interior cross section of the roof element (30) and are supported on the top of the switchgear cabinet (10) and the cooling device housing (20).

8. The switchgear cabinet in accordance with claim 1, wherein the switchgear cabinet frame (10) is a rectangular faced polyhedron and the separating walls (31, 32) of the roof element (30) are aligned symmetrically and parallel with a vertical center plane of the switchgear cabinet (10) and the separating walls extend from a rear wall of the cooling device housing (20) to an opposing parallel wall of the switchgear cabinet (10).

9. The switchgear cabinet in accordance with claim 1, wherein the roof element (30) is connected by spacers with at least one of the top of the switchgear cabinet frame (10) and the cooling device housing (20).

10. The switchgear cabinet in accordance with claim 1, wherein the roof element (30) has a horizontally oriented cover plate (43) which makes a transition into a circumferential edge (45) via a plurality of inclined downward extending transition sections (44).

11. The switchgear cabinet in accordance with claim 10, wherein corners of the roof element (30) are beveled in an area of the circumferential edge (45) and of the transition sections (44).

12. The switchgear cabinet in accordance with claim 1, wherein the separating walls (31, 32) are matched to an interior cross section of the roof element (30) and are supported on the top of the switchgear cabinet (10) and the cooling device housing (20).