Title:
REFRIGERATOR
Document Type and Number:
WIPO Patent Application WO/2020/157806
Kind Code:
A1
Abstract:
This refrigerator (100) comprises a refrigerant circuit in which a refrigerant is circulated through a compressor (1), an oil separator (5), a condenser (2), a first throttle device (3), and an evaporator (4) in the stated order. The compressor includes a suction opening, a discharge opening, and a compression part that is lubricated with oil. The oil separator is provided so as to separate oil and refrigerant that are discharged from the discharge opening. The refrigerator (100) furthermore comprises an oil return passage (17) provided so that the oil separated in the oil separator when driving of the compressor is stopped is returned to a fifth flow passage (15) connecting the evaporator and the suction opening. The fifth flow passage has a connection part (18) connected to the oil return passage, a first rising pipe part (31) that is disposed between the connection part and the evaporator and that extends along the vertical direction, and a third rising pipe part (33) that is disposed between the connection part and the suction opening. The inside diameter of the first rising pipe part is greater than the inside diameter of the third rising pipe part.
Inventors:
MATSUDA HIROFUMI (JP)
TASHIRO YUSUKE (JP)
TASHIRO YUSUKE (JP)
Application Number:
PCT/JP2019/002791
Publication Date:
August 06, 2020
Filing Date:
January 28, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00; F25D11/00; F25D19/00
Foreign References:
| JP2007248001A | 2007-09-27 | |||
| JPS5274560U | 1977-06-03 | |||
| JPS52114463U | 1977-08-31 | |||
| JP2000186863A | 2000-07-04 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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