Multi-type air conditioner system with starting control for para

Details Multi-type air conditioner system with starting control for para Multi-type air conditioner system with starting control for para

1988-07-28

1989-10-31

Wayner, William E.

Refrigeration

Processes

Compressing, condensing and evaporating

62175, 622284, F25B 700

Patent

active

048768596

ABSTRACT:
An outdoor unit includes at least two variable-capacity compressors. Each of a plurality of indoor units includes a detector for detecting an air conditioning load of the indoor heat exchanger to output respective required capacity data. A distribution unit couples the outdoor unit in parallel with the indoor units so as to constitute each refrigerant cycle, and has a plurality of refrigerant flow controllers. A first controller supplies a control command based on the respective required capacity data to the refrigerant flow controllers, and outputs total sum data of the respective required capacity data. A second controllers supplies a single operation command with a predetermined capacity by one of the two compressors or a parallel operation command with predetermined capacities by both the two compressors to the outdoor unit whether the total sum data is smaller or larger than a predetermined value. A third controllers supplies a command for temporarily decreasing the predetermined capacity by one of the two compressors to the outdoor unit when the single operation command is switched to the parallel operation command, and then, supplies a command for starting the other of the two compressors to the outdoor unit.

REFERENCES:
patent: 2875592 (1959-03-01), Olsen
patent: 4102149 (1978-07-01), Conley et al.
patent: 4152902 (1979-05-01), Lush
patent: 4248055 (1981-02-01), Day III et al.
patent: 4672822 (1987-06-01), Iijima et al.
patent: 4720982 (1988-01-01), Shimizu et al.
patent: 4766735 (1988-08-01), Gotou

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