Title:
ROTARY COMPRESSOR AND REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/179356
Kind Code:
A1
Abstract:
In an inner peripheral section of a bearing (40) rotatably supporting a crankshaft (4), an oil groove (42) is formed outside a region where oil film reaction force of a refrigerator oil is generated against a gas load applied to the bearing due to a compression action of a compression chamber. The oil groove (42), extending from a base end of the inner peripheral section of the bearing (40) toward a tip end thereof, branches into a plurality of grooves in the middle of the inner peripheral section, wherein the flow path cross-sectional area of each of the branched off oil grooves is smaller than the flow path cross-sectional area of the oil groove before branching.
Inventors:
IMAGAWA YUICHIRO (JP)
NAGASAWA HIROKI (JP)
NAGASAWA HIROKI (JP)
Application Number:
PCT/JP2017/013653
Publication Date:
October 04, 2018
Filing Date:
March 31, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F04C18/356; F04C29/02
Foreign References:
| JPS6133996U | 1986-03-01 | |||
| JPH02114781U | 1990-09-13 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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