High to low side bypass to prevent reverse rotation
AssigneeCarrier Corporation
InventorsFrederick J. Keller, Jr., Louis E. Chaump
Life of this patent
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Abstract
Rotary compressors such as screw compressors and scroll compressors are capable of reverse operation at shutdown as the system pressure seeks to equalize through the running gear. The present invention provides a valved bypass which is opened responsive to the initiation of stopping the compressor. The valve bypass may be located internally or externally with respect to the compressor.
Claims7
A compressor means including running gear capable of reverse operation and having a suction means and a discharge means in an air conditioning system serially including said compressor means, said discharge means, check valve means, expansion means, evaporator means and said suction means, said system further comprising:
- means for controlling said compressor means responsive to thermostatic demand;
- bypass means connecting said suction means and said discharge means and bypassing said running gear;
- and
- valve means for opening said bypass means responsive to said means for controlling initiating stoppage of said compressor means.
Dependencies are inferred from the claim text.