Refrigeration – Processes – Compressing – condensing and evaporating
Patent
1991-03-26
1992-01-28
Tapolcai, William E.
Refrigeration
Processes
Compressing, condensing and evaporating
62227, 236 51, F25B 4902
Patent
active
050834371
ABSTRACT:
A remotely changeable thermostat for a refrigeration or air conditioning system and method and system employing same. The thermostat has a fluid filled capsule with a diaphragm movably responsive to fluid expansion and contraction for actuating, via lever means, a compressor power switch. The capsule senses temperature via a fluid filled capillary. A separate remote user activated switch energizes an electrical actuator for moving the fulcrum of the lever means to change the sensed temperature of the evaporator at which the power switch is actuated. The user activates a remote switch to energize an electrical heater coil for heating a bimetal strip which moves the fulcrum for the lever means between a high or low temperature setting for compressor power switch actuation in response to user opening or closing the remote heater switch.
REFERENCES:
patent: 2586506 (1952-02-01), Bixler
patent: 2672017 (1954-03-01), Muffly
patent: 2918804 (1959-12-01), Iglehart
patent: 4510480 (1985-04-01), Rossi et al.
patent: 4748819 (1988-06-01), Takahashi
patent: 4926654 (1990-05-01), Johnson
patent: 4944160 (1990-07-01), Malone et al.
Eaton Corporation
Johnston R. A.
Tapolcai William E.
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