Hydraulically driven reciprocating compressor having a free-floa

Details Hydraulically driven reciprocating compressor having a free-floa Hydraulically driven reciprocating compressor having a free-floa

1991-01-07

1992-12-15

Bertsch, Richard A.

Pumps

Condition responsive control of pump drive motor

Single motor control element responsive to means sensing...

417383, F04B 4306

Patent

active

051711290

ABSTRACT:
A compressor with a flexible diaphragm used as the pumping element such as for Stirling coolers or pulse-tube refrigerators, said compressor further including a sensor to monitor the position of the diaphragm and a control circuit for maintaining the diaphragm position in a preselected range to avoid contact between the diaphragm and the rest of the compressor. The compressor also includes an expansion member for compensating for the thermal expansion of the working fluid of the compressor.

REFERENCES:
patent: 3286640 (1966-11-01), Bauer
patent: 4212589 (1980-07-01), Bosio
patent: 4966528 (1990-10-01), Henkel et al.

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