| 摘要 |
A capacity-increasing device for a four-way valve, the four-way valve has a first port, a second port, a third port and a fourth port, wherein first port is connected with an output end of a compressor via a first line, second port is connected with an input end of the compressor via a second line, third port is connected with a first heat exchanger via a third line, and fourth port is connected with a second heat exchanger via a fourth line, the capacity-increasing device includes a first bypass line and a first valve, the first bypass line connected between third line and second line, the first valve in the first bypass line, a second bypass line and a second valve, the second bypass line connected between fourth line and second line, the second valve in the second bypass line. |
