Cooling system for a switchgear cabinet

Abstract

A cooling system for cooling a switchgear cabinet including, in the interior thereof, heat generating built-in components situated one above the other and to which individual heat sinks are assigned and included in a coolant circuit via a flow line and a return line. The heat sinks are connected to the flow line and to the return line via individual unit supply lines and are supplied with coolant. The coolant circuit is closed via the coolant exit side of the air/water heat exchanger. The air/water heat exchanger is arranged in the bottom area of the switchgear cabinet, and is coupled, via air entry side by an air entry opening of the switchgear cabinet bottom and of an air outlet opening of a double bottom of a setting-up bottom of the switchgear cabinet, to a central air-conditioning device, which supplies the double bottom with cool air. A pump and an expansion tank are included in the closed coolant circuit. This enables, with a simple design and simplified assembly, optimal cooling of built-in components situated one above the other to generate high levels of heat and which have a high packing density.

Dependencies are inferred from the claim text.