Title:
ヒートポンプシステム
Document Type and Number:
Japanese Patent JP7117513
Kind Code:
B2
Abstract:
To provide a heat pump system shortening defrosting time to improve usability.SOLUTION: A heat pump system includes: a compression mechanism 21; a use-side heat exchanger 22 heating a use-side heat medium; an intermediate heat exchanger 26; a first expansion device 23; a by-pass refrigerant circuit 3 branched between the use-side heat exchanger 22 and the first expansion device 23, heat-exchanged with a refrigerant flowing through a main refrigerant circuit 2 by the intermediate heat exchanger 26 after the branched refrigerant is decompressed by the second expansion device 31 and merged into the refrigerant on the way of the compression mechanism 21; and a use-side heat medium circuit 5 circulating the use-side heat medium by a transfer device 55. When an operation is moved to that in a defrosting operation mode on the way of executing an operation in a heating operation mode, the aperture of a second expansion device 31 is operated in a closing direction, thereafter the operation of the transfer device 55 is stopped, and execution of the operation in the heating operation mode is stopped.SELECTED DRAWING: Figure 1
Inventors:
Xu Qi Sen
Yasuhiko Isayama
Yuki Yamaoka
Shunji Moriwaki
Kazuhiko Machida
Kazuto Nakatani
Tsuneko Imagawa
Kazutaka Koishiwara
Shigeo Aoyama
Yasuhiko Isayama
Yuki Yamaoka
Shunji Moriwaki
Kazuhiko Machida
Kazuto Nakatani
Tsuneko Imagawa
Kazutaka Koishiwara
Shigeo Aoyama
Application Number:
JP2019106605A
Publication Date:
August 15, 2022
Filing Date:
June 07, 2019
Export Citation:
Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
F25B47/02; F25B1/00; F25B1/10
Domestic Patent References:
| JP2011137602A | ||||
| JP2003222447A | ||||
| JP2017155944A | ||||
| JP2009133581A |
Attorney, Agent or Firm:
Kenji Kamata
Koichi Nomura
Koichi Nomura