Refrigeration – Automatic control – Refrigeration producer
Patent
1997-03-14
2000-08-22
Tapolcai, William E.
Refrigeration
Automatic control
Refrigeration producer
236 92B, G05D 2312
Patent
active
061053791
ABSTRACT:
The present invention discloses an automatic self-adjusting thermally powered expansion valve for controlling the flow of refrigerant to an evaporator of a refrigeration system. The valve includes a differential fluid amplifier transducer which produces a constant flow of refrigerant independent of the liquid line pressure and includes a generally cylindrical interior with an inlet chamber having an inlet port and an outlet chamber having an outlet port and an orifice between the chambers providing a passage for the flow of refrigerant through the valve. The flow of refrigerant through the valve is regulated by a valve element, which moves longitudinally within the chambers with respect to the orifice. The longitudinal position of the valve element is controlled by force generators and sensors. The position of the valve element depends on the fluid pressure and the size of the pressure disks, and the spring constant of the compression spring. As the temperature at the sensors increases, so to does the pressure force on the pressure disks.
REFERENCES:
patent: 2363010 (1944-11-01), Matteson
patent: 2529378 (1950-11-01), Dube et al.
patent: 2550022 (1951-04-01), Ray
patent: 2579034 (1951-12-01), Dube et al.
patent: 2856759 (1958-10-01), Barbulesco
patent: 3316731 (1967-05-01), Quick
patent: 3405535 (1968-10-01), Matthies
patent: 3427819 (1969-02-01), Seghetti
patent: 3822563 (1974-07-01), Orth
patent: 4032070 (1977-06-01), Nielsen
patent: 4437317 (1984-03-01), Ibrahim
patent: 4475686 (1984-10-01), Huelle et al.
patent: 4500035 (1985-02-01), Kuroda et al.
patent: 4625524 (1986-12-01), Kimura et al.
patent: 4651535 (1987-03-01), Alsenz
patent: 4688390 (1987-08-01), Sawyer
patent: 4840038 (1989-06-01), Sato
patent: 5148978 (1992-09-01), Stapelbroek
patent: 5361597 (1994-11-01), Hazime et al.
patent: 5396780 (1995-03-01), Bendtsen
patent: 5588590 (1996-12-01), Sakakibara et al.
Alsenz Richard H.
Ansted Roger C.
Bryson Barry
Johnson Jeffrey W.
Malone Paul
Altech Controls Corporation
Tapolcai William E.
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