Control system for multiple-type air conditioner

Details Control system for multiple-type air conditioner Control system for multiple-type air conditioner

1997-04-30

1998-11-10

Tanner, Harry B.

Refrigeration

Automatic control

Preventing, removing or handling atmospheric condensate

62160, 62175, 62180, F24F 1102

Patent

active

058327355

ABSTRACT:
An inexpensive control system for a multiple-type air conditioner makes it possible to automatically and independently detect frosting and conduct defrosting control in an outdoor unit during a reverse cycle heating operation in a two-compressor, multiple-type air conditioner which has an outdoor unit equipped only with a simple ON/OFF control function and which is not provided with a signal conductor for transmitting the information on the state of an outdoor unit to an indoor unit. In this case, the operation of the outdoor unit can be determined, monitored, and controlled from the indoor unit side so as to enable proper action to be taken. The control system is provided with means for independently controlling the operation of the outdoor unit and means for determining the operation of the outdoor unit from the indoor unit side according to the state of an indoor side heat exchanger and for controlling the operation of the air conditioner.

REFERENCES:
patent: 3777505 (1973-12-01), Otaki
patent: 4852360 (1989-08-01), Harshbarger, Jr. et al.
patent: 5046323 (1991-09-01), Kuwahara

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