Air conditioning system with variable capacity compressor

Details Air conditioning system with variable capacity compressor Air conditioning system with variable capacity compressor

1988-10-28

1989-12-26

Stout, Donald E.

Pumps

With condition responsive pumped fluid control

Inlet throttle or stop valve

417310, F04B 4908

Patent

active

048894745

ABSTRACT:
An air conditioning system includes an evaporator and a variable capacity compressor. The compressor has a lower pressure zone including a suction chamber connected to the outlet of the evaporator, a higher pressure zone, a bellows displaceable in response to pressure representative of a thermal load on the system, a control valve device responsive to displacement of the bellows for bringing the higher pressure zone into and out of communication with the lower pressure zone to thereby control the difference between pressure from the higher pressure zone and pressure from the lower pressure zone, and a control element responsive to change in the difference between pressure from the higher pressure zone and pressure from the lower pressure zone for varying the delivery quantity of the compressor. The system also includes a gastight chamber formed in the compressor and accommodating the bellows, and a pressure introducing line connecting between the gastight chamber and the outlet of the evaporator and introducing pressure at the latter into the former as the pressure representative of the thermal load.

REFERENCES:
patent: 4557670 (1985-12-01), Inagaki et al.
patent: 4778352 (1988-10-01), Nakajima
patent: 4818189 (1989-04-01), Nakajima

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