Multi-type air-conditioning system with an outdoor unit coupled

Details Multi-type air-conditioning system with an outdoor unit coupled Multi-type air-conditioning system with an outdoor unit coupled

1991-03-29

1992-06-23

Makay, Albert J.

Refrigeration

Automatic control

Diverse, cascade or compound refrigeration-producing system

62204, 62209, 165 22, F25B 700

Patent

active

051232553

ABSTRACT:
On each refrigerant piping to an indoor heat exchanger of each indoor unit, there is provided a flow control valve of which target opening (.theta.t) is selected separately according to an air-conditioning load of each indoor unit. Provided, the flow control valve which will have a maximum target opening (.theta.t.sub.max) selected, is fully opened, with the remaining flow control valves having such an opening greater than each of respective target openings (.theta.t) by a given value (.DELTA..theta.). Meanwhile, a target frequency (Ft) of output power from an inverter is selected, following the total of air-conditioning loads of respective indoor units; provided, an actual frequency (F) of output power of the inverter is selected in such a value lower than the target frequency (Ft) by a given value (.DELTA.F).

REFERENCES:
patent: 4720982 (1988-01-01), Shimizu et al.
patent: 4876859 (1989-10-01), Kitamoto

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