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AssigneeRittal GmbH & Co. KG
InventorsJörg KNETSCH, Christoph WASCHKE, Juan Carlos CACHO ALONSO
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A cooling device for switchgear cabinet air conditioning, wherein the cooling device has a primary circuit which has a combustible refrigerant and has a condenser which is arranged in an external air circuit of the cooling device, and wherein the cooling device has an evaporator in an internal air circuit which is fluidically isolated from the external air circuit, wherein the cooling device has a secondary circuit which has a non-combustible refrigerant and which has the evaporator and a liquid-liquid heat exchanger which is arranged in the external air circuit and with which heat is transferred from the non-combustible refrigerant to the combustible refrigerant. A corresponding switchgear cabinet arrangement is also described.
1-16. (canceled)
A cooling device for switchgear cabinet air conditioning, comprising wherein the cooling device has a primary circuit which has a combustible refrigerant and has a condenser which is arranged in an external air circuit of the cooling device, and wherein the cooling device has an evaporator in an internal air circuit which is fluidically isolated from the external air circuit, wherein the cooling device has a secondary circuit which has a non-combustible refrigerant and which has the evaporator and a liquid-liquid heat exchanger which is arranged in the external air circuit and with which heat is transferred from the non-combustible refrigerant to the combustible refrigerant, wherein the cooling device comprises a tertiary circuit, in which the condenser of the primary circuit is the condenser of the tertiary circuit and the evaporator of the secondary circuit is the evaporator of the tertiary circuit.
Dependencies are inferred from the claim text.