Title:
冷凍サイクル装置
Document Type and Number:
Japanese Patent JP6888174
Kind Code:
B2
Abstract:
A refrigeration cycle device (100) wherein a refrigerant circulates in this order: a compressor (1), an oil separator (5), a first heat exchanger (2), a pressure reducing device (3), and a second heat exchanger (4). In a first operation, the refrigerant circulates in the refrigeration cycle device (100). In a second operation, a lubrication oil (RO) stored in the oil separator (5) moves to the compressor (1) via a first valve (61) and a second valve (62). In the first operation, a control device (7) drives the compressor (1) in a state in which the first valve (61) is closed and the second valve (62) is opened. In the second operation, the control device (7) executes, in order: closing the second valve (62), stopping the compressor (1), opening the first valve (61), closing the first valve (61), and opening the second valve (62). In the second operation, due to opening the first valve (61), the lubrication oil (RO) passes through the first valve (61) in accordance with the pressure difference of the refrigerant between both sides of the first valve (61).
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Inventors:
Hirofumi Matsuda
Yusuke Tashiro
Yusuke Tashiro
Application Number:
JP2020547547A
Publication Date:
June 16, 2021
Filing Date:
September 20, 2018
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
F25B1/00; F25B43/02
Domestic Patent References:
| JP2006349298A | ||||
| JP2012127610A | ||||
| JP61256157A |
Foreign References:
| CN106642819A |
Attorney, Agent or Firm:
Fukami patent office