Differential pressure sensor in a capacity control valve for...

Details Differential pressure sensor in a capacity control valve for... Differential pressure sensor in a capacity control valve for...

G - Physics

05

D

62/142, 230/149

G05D 16/10 (2006.01) F04B 49/24 (2006.01)

Patent

CA 1333275

This invention is directed to a useful improvement in a capacity control valve for use in a fluid compressor with a relatively high pressure HP and a relatively low pressure LP for changing the operational characteristics thereof by using the relatively high pressure HP taking into consideration such an observation that an increased pressure losses of the refrigerant as generated from an increased flow rate thereof and the thermal load on the car cooler would occasionally occur on the part of the relatively high pressure HP during the operation. This improvement is, as summarized in brief, concerned with a capacity control valve of the type operative to take the intermediate pressure AP, for the control of a specific amount of compressed gas to be bypassed to the suction side of the fluid compressor, as a linear function of said relatively low pressure LP using a differential pressure between the relatively high pressure HP and the relatively low pressure LP of the fluid compressor; which comprises an adjusting means adapted to adjust the intermediate pressure AP in such a manner that the relative low pressure LP is made lower as the relatively high pressure HP becomes higher, and that said relatively low pressure LP is made higher as said relatively high pressure HP becomes lower.

602022

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