Injection valve for a refrigeration system

Details Injection valve for a refrigeration system Injection valve for a refrigeration system

1991-04-12

1992-09-22

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

236 99R, 62505, F25B 500

Patent

active

051486849

ABSTRACT:
This control valve (10) can be used for reducing the temperature of the discharge gas in the compressor (100) of a refrigeration system. The valve (10) includes a body (12) having inlet and outlet ports (20, 22), respectively receiving refrigerant from one part of the system and injecting it to a point upstream of compressor discharge, a valve seat (32), disposed between said inlet and outlet ports, and a valve member (34) controlling flow through the valve seat. The valve (10) includes a spring assembly (40) mounted in the body (12) and applying a force to the valve member (34) tending to urge the valve member into a closed position and an actuator assembly (50) modulating the valve member (34) in response to a change of temperature in the compressor discharge line. The actuator assembly (50) includes an actuator (52) movable within the body (12), a connector (70) attached to the body, a bellows (60) connected between the actuator (52) and the connector (70). A temperature responsive sensor (108) communicates with the bellows (60) to control pressure in the bellows and pushrods (70) interconnect the actuator (52) and the valve member (34) to modulate the valve member in response to temperature change in the sensor (108).

REFERENCES:
patent: 853541 (1907-05-01), Eddy
patent: 1885711 (1932-11-01), Giesler
patent: 1920458 (1933-08-01), Bast
patent: 2719674 (1955-10-01), Carter
patent: 3242688 (1966-03-01), Miller
patent: 3338518 (1967-08-01), Barbier
patent: 3452929 (1969-07-01), Douglas
patent: 3795117 (1974-03-01), Moody, Jr. et al.
patent: 3859815 (1975-01-01), Kasahara
patent: 4095742 (1978-06-01), Schumacher

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