Refrigeration – Automatic control – Preventing – removing or handling atmospheric condensate
Patent
1997-02-14
1998-03-17
Tanner, Harry B.
Refrigeration
Automatic control
Preventing, removing or handling atmospheric condensate
62 80, 62155, F25D 4702
Patent
active
057273952
ABSTRACT:
A defrost control for a heat pump system initiates a defrost when certain computed conditions are exceeded. The conditions include a limit as to the difference that may be permitted between the maximum temperature difference of two measured temperatures and the current difference of these measured temperatures. The two measured temperatures are the temperature of the indoor coil of the heat pump and the indoor air temperature of the air being heated by the indoor coil.
REFERENCES:
patent: 3777505 (1973-12-01), Otaki
patent: 4373349 (1983-02-01), Mueller
patent: 4882908 (1989-11-01), White
patent: 5179841 (1993-01-01), Phillips et al.
Dolan Robert P.
Dudley Kevin F.
Guo Zhichao
Kimberly Kevin A.
Phillips Thomas R.
Carrier Corporation
Tanner Harry B.
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