Refrigeration – Automatic control – Of external fluid or means
Patent
1980-08-25
1982-05-18
Makay, Albert J.
Refrigeration
Automatic control
Of external fluid or means
622386, 237 2B, F25D 1700, G05D 2300
Patent
active
043303099
ABSTRACT:
A water heater construction and the method of operation thereof including a water tank containing water to be heated; a heat pump having condenser heat exchanger externally of the water tank; circulation means for circulating water from the lower end of the water tank through the condenser heat exchanger to heat the water and then back into the upper end of the water tank; and control means for controlling the circulation of the water by the circulation means so that the water returning to the water tank from the condenser heat exchanger has been heated to at least a predetermined return water temperature by the condenser heat exchanger sufficient for immediate use. The control means may include variable flow control valve operatively connecting the condenser heat exchanger with the upper end of the water tank with the flow control valve regulating the flow of water so that the temperature of the water leaving the condenser heat exchanger for return to the upper end of the water tank is at least at the predetermined return water temperature.
REFERENCES:
patent: 2575325 (1951-11-01), Ambrose et al.
patent: 2668420 (1954-02-01), Hammell
patent: 3922876 (1975-12-01), Wetherington, Jr. et al.
patent: 4073285 (1978-02-01), Wendel
patent: 4136731 (1979-01-01), DeBoer
patent: 4141222 (1979-02-01), Ritchie
patent: 4142379 (1979-03-01), Kuklinski
Powell, Evan, Heat Pump Water Heater, Popular Science, Apr. 1980, pp. 49-50.
Makay Albert J.
Powell B. J.
Tanner Harry
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