Refrigerant directly cooled capacitors

The invention is a direct contact refrigerant cooling system using a refrigerant floating loop having a refrigerant and refrigeration devices. The cooling system has at least one hermetic container disposed in the refrigerant floating loop. The hermetic container has at least one electronic component selected from the group consisting of capacitors, power electronic switches and gating signal module. The refrigerant is in direct contact with the electronic component.

Claims:

* 1. A direct contact refrigerant cooling system comprising: a refrigerant floating loop further comprising a refrigerant and refrigeration devices; at least one hermetic container disposed in said refrigerant floating loop, said hermetic container further comprising at least one electronic component selected from the group consisting of capacitors, power electronic switches and gating signal module; wherein said refrigerant is in direct contact with said at least one electronic component, and wherein said capacitors further comprise at least one cooling channel having said refrigerant disposed therein.

* 2. The direct contact refrigerant cooling system of claim 1 wherein said capacitors further comprise at least one surface treatment selected from the group consisting of low fins, roughened surfaces and reentrant grooves.

* 3. The direct contact refrigerant cooling system of claim 1 wherein said capacitors further comprise at least one electrically conductive foam selected from the group consisting of metal foam and graphite foam.

* 4. The direct contact refrigerant cooling system of claim 3 wherein said metal foam is at least one foam selected from the group consisting of aluminum foam and copper foam.

* 5. The direct contact refrigerant cooling system of claim 3 wherein said graphite foam is a pitch derived carbon foam.

* 6. The direct contact refrigerant cooling system of claim 1 wherein said capacitors further comprise multiple capacitor cylinders separated by cooling channels.

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