Air conditioning apparatus capable of performing a dehumidifying

Details Air conditioning apparatus capable of performing a dehumidifying Air conditioning apparatus capable of performing a dehumidifying

1993-10-13

1994-09-13

Tanner, Harry B.

Refrigeration

Automatic control

Humidity sensor

62181, 621766, 622284, 621765, 236 44C, 395903, F24F 1102

Patent

active

053457765

ABSTRACT:
An air conditioner having a compressor, an outdoor fan, and two indoor heat exchangers which are connected by an electric expansion valve. During a dehumidifying operation, the opening of the electric expansion valve is decreased, thereby decompressing the refrigerant flowing from the first indoor heat exchange into the second indoor exchanger. The first and second heat exchangers thereby function as a reheater and an evaporator, respectively. The second indoor heat exchanger cools and dehumidifies the indoor air, and the first indoor heat exchanger heats the indoor air again. The indoor air, first cooled, then dehumidified, and finally re-heated, is supplied into the room. During the dehumidifying operation, a deviation (T) of the indoor temperature (Ta) from a preset indoor temperature (Ts), and a change (.DELTA.T) in the deviation (T) are detected, and the deviation (H) of the indoor humidity (Ha) from a preset indoor humidity (Hs), and a change (.DELTA.H) are also detected. Fuzzy inference is performed based on the deviation (T), the change (.DELTA.T), the deviation (H) and the change (.DELTA.H), thereby calculating an adjustment value (.DELTA.F) and an adjustment value (.DELTA.N). The value (.DELTA.F) adjusts the drive frequency of the compressor, and the value (.DELTA.N) adjusts the rotational speed (N) of the outdoor fan.

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patent: 5291390 (1994-03-01), Satou

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