Title:
ROTARY COMPRESSOR AND REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/166554
Kind Code:
A1
Abstract:
The compression mechanism of this rotary compressor comprises: a cylinder in which a cylinder chamber is formed and in which an eccentric shaft portion of a drive shaft is arranged in the cylinder chamber; a bearing portion which blocks one opening portion of the cylinder chamber and includes a bearing for rotationally supporting a main shaft portion of the drive shaft; and a blocking member which blocks the other opening portion of the cylinder chamber and which has a hole formed therein into which a sub shaft portion of the drive shaft is inserted. Moreover, in this rotary compressor, a gap between the sub shaft portion and an inner peripheral surface of the hole is wider than a gap between the main shaft portion and an inner peripheral surface of the bearing and the roughness of the inner peripheral surface of the hole is higher than the roughness of the inner peripheral surface of the bearing.
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Inventors:
HAGINO SHOZO (JP)
Application Number:
PCT/JP2022/008587
Publication Date:
September 07, 2023
Filing Date:
March 01, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F04C18/356
Foreign References:
| CN104976123A | 2015-10-14 | |||
| CN105090028A | 2015-11-25 | |||
| JP2015158146A | 2015-09-03 | |||
| JPS5749091A | 1982-03-20 | |||
| JP2017180180A | 2017-10-05 | |||
| JPS5231014U | 1977-03-04 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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