Title:
ヒートポンプ装置
Document Type and Number:
Japanese Patent JP7172265
Kind Code:
B2
Abstract:
To detect liquid-phase refrigerant before it is discharged from a gas-phase refrigerant discharge port without complicating a structure of a gas-liquid separator.SOLUTION: In a heat pump device, a gas-liquid separator 7 is provided with an intermediate refrigerant discharge port 7e that can supply separated liquid-phase refrigerant to intermediate piping 9 upstream of an internal heat exchanger 10 from a position higher than a liquid-phase refrigerant discharge port 7c1 but lower than a gas-phase refrigerant discharge port 7d1. The heat pump device controls openings of a high-stage expansion valve 6 and a low-stage expansion valve 8 so as to lower a liquid level in the gas-liquid separator 7 when a control unit 20 detects that the degree of superheat of refrigerant has fallen below a predetermined threshold.SELECTED DRAWING: Figure 1
Inventors:
Yusuke Onishi
Kensetsu Yasushima
Yoshida space-time
Kensetsu Yasushima
Yoshida space-time
Application Number:
JP2018147394A
Publication Date:
November 16, 2022
Filing Date:
August 06, 2018
Export Citation:
Assignee:
Fuji Electric Co., Ltd.
International Classes:
F25B43/00; F25B1/00; F25B1/10
Domestic Patent References:
| JP2014119157A | ||||
| JP2015224832A | ||||
| JP2001124444A |
Attorney, Agent or Firm:
Sakai International Patent Office
Previous Patent: Cognitive function assessment system
Next Patent: STRUCTURE FOR ATTACHING SEATBELT ANCHOR TO REAR PILLAR
Next Patent: STRUCTURE FOR ATTACHING SEATBELT ANCHOR TO REAR PILLAR