Abstract A cooled enclosure for housing heat generating devices, particularly solid state elements such as SCRs, diodes and other components, including a first chamber in which the heat generating devices are immersed in a refrigerant which will vaporize and abstract heat from the devices. The refrigerant vapor is condensed in a second chamber in which a heat exchanger is disposed, said heat exchanger being supplied with a liquid coolant. The condensed refrigerant then returns to the first chamber and is added to the body of liquid refrigerant in said chamber. An important feature of the invention is an alternate, secondary flow path for the refrigerant vapor through a secondary heat exchanger which is preferably air cooled. Under conditions when the ambient air is effective to condense refrigerant without operation of the primary liquid cooled heat exchanger, the vapor is condensed in such secondary heat exchanger and returned to the refrigerant bath in the first chamber.
A cooled enclosure for housing heat generating devices comprising: a plurality of spaced, generally cylindrical shells defining primary chambers in which said heat generating devices are located; a primary heat exchanger extending traversely of said shells and communicating therewith through openings adjacent the top of each said shell, said heat exchanger including a coil through which a liquid coolant is adapted to be circulated; a vapor collecting header connected to said primary heat exchanger; a condensate collecting header; a plurality of air-cooled heat exchangers interconnecting said vapor collecting header and said condensate collecting header, said heat exchangers being provided with a heat transfer surface for promoting heat transfer between ambient air and vapor flowing through said heat exchangers; means for returning condensate from said collecting header to said shells; and a body of halogenated hydrocarbon refrigerant in said primary chambers in contact with said heat Generating devices whereby refrigerant vapor generated in said primary chambers may be condensed in said primary heat exchanger or alternatively by said air-cooled heat exchangers when said ambient air is effective to condense said refrigerant without operation of said primary heat exchanger.
Claim 2
Dependent Claim
187 words
A cooled enclosure for housing heat generating devices comprising: a plurality of spaced, generally cylindrical shells defining primary chambers in which said heat generating devices are located; a primary heat exchanger extending traversely of said shells and communicating therewith through openings adjacent the top of each said shell, said heat exchanger including a coil through which a liquid coolant is adapted to be circulated; a vapor collecting header connected to said primary heat exchanger; a condensate collecting header; a plurality of air-cooled heat exchangers interconnecting said vapor collecting header and said condensate collecting header, said heat exchangers being provided with a heat transfer surface for promoting heat transfer between ambient air and vapor flowing through said heat exchangers; means for returning condensate from said collecting header to said shells; and a body of halogenated hydrocarbon refrigerant in said primary chambers in contact with said heat Generating devices whereby refrigerant vapor generated in said primary chambers may be condensed in said primary heat exchanger or alternatively by said air-cooled heat exchangers when said ambient air is effective to condense said refrigerant without operation of said primary heat exchanger.