F - Mech Eng,Light,Heat,Weapons – 25 – B
Patent
F - Mech Eng,Light,Heat,Weapons
25
B
62/25
F25B 13/00 (2006.01) F24F 11/00 (2006.01) F24F 11/08 (2006.01) F25B 49/02 (2006.01) F25D 21/00 (2006.01) G05D 23/24 (2006.01)
Patent
CA 1147569
9D-RA-14475 TWO STAGE CONTROL CIRCUIT FOR REVERSIBLE AIR CYCLE HEAT PUMP ABSTRACT OF THE DISCLOSURE A two-stage circuit for controlling all operational functions of a reversible air cycle heat pump unit, including room thermostat functions and defrosting functions. All user controllable functions are controlled via a remotely locatable thermostat-like control unit mounted on an inside wall of the room separate from the heat pump unit, and connected to the heat pump unit with only five conductors. A number of desirable functions and features are provided. For example, for optimum energy usage the control provides two stages in both beating and cooling modes of operation, with almost constant temperature differential between the two stages regardless of temperature setting, and almost constant hysteresis for each stage. To facilitate compliance with Government-imposed regulations where applicable, heating and cooling limits are independently adjustable without any modification whatsoever for use in those public buildings where heating and cooling must be limited.
377607
Alley Robert P.
Pohl Walter J.
Relyea John W.
Company General Electric
Eckersley Raymond A.
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