METHOD FOR CONTROLLING OPERATION OF AIR CONDITIONER

Japanese Patent JP3407867

B2

PROBLEM TO BE SOLVED: To eliminate a fault of blocking a refrigerant discharging from a compressor or staying a liquid refrigerant in a four-way valve by controlling opening or closing states of a first opening/closing valve in piping between the valve and an outdoor heat exchanger and a second opening/closing valve in a bypass tube detoured through the four-way valve in response to an operating state.
SOLUTION: An opening/closing valve C is opened for a predetermined time from the start of a cooling operation, and a refrigerant from a compressor 10 is guided to an outdoor heat exchanger 30 through a four-way valve 20. Then, a bypass tube 91 blocks a flow of the refrigerant to the exchanger 30 by closing an opening/closing valve D. The refrigerant condensed by the exchanger 30 is then guided to an indoor heat exchanger 50 through liquid side piping 61A, a throttle unit 40, and liquid side pipings 61B, 61C and evaporated. After a predetermined time is elapsed from the start of the cooling operation, the valve D is opened to return the refrigerant to the tube 91. Thereafter, the valve C is closed, the refrigerant is passed only through the tube 91 to be supplied to the exchanger 30, thereby suppressing heat absorption of the refrigerant.

Shinsho Hiro
Yamaguchi Adult
Hitoshi Motegi
Masao Inui
Shigeru Nariai

JP7709999A

May 19, 2003

March 23, 1999

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Matsushita Electric Industrial Co., Ltd

F25B13/00; F25B47/02; (IPC1-7): F25B13/00; F25B47/02

JP11132587A

Shimizu Yoshi Hiro (2 people outside)

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