Multi-type air conditioner with optimum control for each load

Details Multi-type air conditioner with optimum control for each load Multi-type air conditioner with optimum control for each load

1986-10-27

1988-01-26

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

622284, 165 22, F24F 300

Patent

active

047209828

ABSTRACT:
A multi-type air conditioner has an outdoor unit, a plurality of indoor units, a refrigeration cycle, an inverter, flow control valves, opening/closing valves, a first controller, a second controller, and a third controller. The outdoor unit has a variable-capability compressor, an outdoor heat exchanger, and a pressure decreasing unit. Each indoor unit has an indoor heat exchanger. The refrigeration cycle has the variable-capability compressor, the outdoor heat exchanger, the pressure decreasing unit, and a parallel combination of the respective indoor heat exchangers connected in series. The inverter supplies drive power of a predetermined frequency to the capability variable compressor. The flow rate control valves are provided to the liquid-side refrigerant pipes of the respective indoor heat exchangers. The opening/closing valves are provided to the gas-side refrigerant pipes of the respective indoor heat exchangers. The first controller controls the open factor of the respective flow control valves in accordance with the air-conditioning load of the respective indoor units. The second controller controls opening/closing of the opening/closing valves in accordance with the air-conditioning loads or the operation states of the respective indoor units. The third controller controls the output frequency of the inverter in accordance with the total air-conditioning load of the indoor units.

REFERENCES:
patent: 4112703 (1978-09-01), Kountz
patent: 4480442 (1984-11-01), Ide et al.
patent: 4494382 (1985-01-01), Raymond
patent: 4509586 (1985-04-01), Watabe

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