Title:
回転式圧縮機
Document Type and Number:
Japanese Patent JP5556450
Kind Code:
B2
Abstract:
In a rotary compressor of a vane rotary type, an outer peripheral surface of an eccentric portion 41 of a shaft 4 on a side adjacent to a center of the shaft 4 is located radially inwardly of an outer peripheral surface of a main shaft 42 inserted in a main bearing 7 and that of an auxiliary shaft 43 inserted in an auxiliary bearing 8. Also, a back clearance means used in mounting a piston 9 on the shaft 4 is provided in each of an inner peripheral surface of the piston 9 and the eccentric portion 41 of the shaft 4. Such configurations can reduce a diameter of the eccentric portion 41. A reduction in diameter of the eccentric portion 41 can reduce a viscous force of oil acting between the eccentric portion 41 of the shaft 4 and the inner peripheral surface of the piston 9 to thereby reduce a rotational moment about a center of the eccentric portion 41 of the shaft 4, which rotational moment acts on the piston 9 in a direction of rotation of the shaft 4, thus making it possible to reduce a sliding loss that is generated by a reciprocating motion of a vane 11 in a vane groove 10.
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Inventors:
苅野 健
Daisuke Funakoshi
Iida 登
Sawai 清
Daisuke Funakoshi
Iida 登
Sawai 清
Application Number:
JP2010151805A
Publication Date:
July 23, 2014
Filing Date:
July 02, 2010
Export Citation:
Assignee:
Panasonic incorporated company
International Classes:
F04C29/00; F04C18/324
Attorney, Agent or Firm:
Yoshiaki Tokuda
Fujii Kentaro
Fujii Kentaro
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