US 12,442,572 B2
Heat pump
Norihiro Okuda, Osaka (JP); Terunori Aikawa, Osaka (JP); and Hideshi Okada, Osaka (JP)
Assigned to YANMAR POWER TECHNOLOGY CO., LTD., Osaka (JP)
Appl. No. 17/914,030
Filed by Yanmar Power Technology Co., Ltd., Osaka (JP)
PCT Filed Mar. 4, 2021, PCT No. PCT/JP2021/008360
§ 371(c)(1), (2) Date Sep. 23, 2022,
PCT Pub. No. WO2021/192885, PCT Pub. Date Sep. 30, 2021.
Claims priority of application No. 2020-053961 (JP), filed on Mar. 25, 2020.
Prior Publication US 2023/0137037 A1, May 4, 2023
Int. Cl. F25B 41/20 (2021.01); F25B 30/00 (2006.01)
CPC F25B 41/20 (2021.01) [F25B 30/00 (2013.01); F25B 2600/2501 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A heat pump configured to circulate a refrigerant for cooling and heating that includes an indoor heat exchanger, an outdoor heat exchanger connected to the indoor heat exchanger, and an accumulator connected to the outdoor heat exchanger, the heat pump comprising:
a first heat exchanger provided between the outdoor heat exchanger and the accumulator; and
a bypass circuit configured to cause the refrigerant that flows out of the indoor heat exchanger to flow into the first heat exchanger thereby bypassing the outdoor heat exchanger;
wherein the bypass circuit includes a valve configured to have a degree of opening that is controlled in an opening direction thereof when an outside air temperature is within a range of a predetermined temperature, wherein the degree of opening comprises partially opening the valve in the opening direction.