To provide a refrigeration cycle device capable of effectively utilizing a heat amount of a heat storage heat exchanger, adjusting a blowoff temperature of an indoor unit by changing a capacity of an indoor heat exchanger even when the heat amount contained in a heat source is negligible, and suppressing the lowering of a room temperature at defrosting operation during heating operation.
A refrigeration cycle device includes: a fifth piping 25 disposed between an outdoor heat exchanger 14 and a four-way valve 8 and flowing directly a refrigerant to a suction pipe of a compressor 6 from the outdoor heat exchanger 14 via the four-way valve 8; and a three-way valve (a switching device) 42 enabling switching between the fifth piping and a sixth piping 38 flowing the refrigerant to the suction pipe of the compressor 6 via the heat storage heat exchanger (an auxiliary heat exchanger) 34 for heating the refrigerant from the outdoor heat exchanger 14. The refrigeration cycle device is configured to adjust a flow rate of the refrigerant, which has flowed in the indoor heat exchanger 16 and the outdoor heat exchanger 14, flowed to the heat storage heat exchanger (the auxiliary heat exchanger) 34 via the three-way valve 42 and a flow rate of the foregoing refrigerant flowed to the four-way valve 8 by controlling the three-way valve (the switching device) 42 at defrosting operation.
KAMOTA HIROKAZU
YAMAMOTO KENSHO
| JPH0642842A | 1994-02-18 | |||
| JPH04366341A | 1992-12-18 | |||
| JP2010030325A | 2010-02-12 | |||
| JP2011007381A | 2011-01-13 |
| US20060096308A1 | 2006-05-11 |
Daisuke Nagano
Kentaro Fujii
Next Patent: REFRIGERATION CYCLE APPARATUS AND HOT WATER PRODUCING APPARATUS