Pumps – With condition responsive pumped fluid control – Pressure responsive relief or bypass valve
Patent
1990-01-18
1991-09-17
Smith, Leonard E.
Pumps
With condition responsive pumped fluid control
Pressure responsive relief or bypass valve
417440, 623246, F04B 4908
Patent
active
050490443
ABSTRACT:
A compressor, e.g., a scroll type compressor for a heat pump including a bypass passage by way of which the high pressure side of the compressor is communicated with a compression chamber in which a compression stroke is carried out is disclosed. The compressor further includes opening/closing means so that when it is required that the compressor is operated at a high efficiency, the bypass passage is closed and when it is required that the compressor is operated with a high level of ability, the bypass passage is opened so as to allow high pressure gas to be introduced into the compression chamber in which a compression stroke is carried out whereby the gas is compressed again.
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Kocharov Michael I.
Mitsubishi Jukogyo Kabushiki Kaisha
Smith Leonard E.
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