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Title:
SCROLL FLUID MACHINE
Document Type and Number:
Japanese Patent JP2011190779
Kind Code:
A
Abstract:

To provide a scroll fluid machine achieving a reduction in weight of a balance weight.

This scroll fluid machine includes: a fixed scroll; a turning scroll 800 engaged with the fixed scroll; a crankshaft 200 swirling and driving the turning scroll; and a shaft supporting portion 105 provided on the back surface of the turning scroll and axially movably engaged with the eccentric pin portion 202 of the crankshaft. The balance weight 415 is inserted and fixed to the eccentric pin portion. Further, an upper sealing portion 101 is provided between the balance weight and the turning scroll, and a lower sealing portion 102 is provided between the balance weight and a frame. A small hole 414 for intermittently supplying lubricating oil in a center space to a low-pressure space is formed in the lower surface of the balance weight opposed to the lower sealing portion.


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Inventors:
Fukuyama, Eri
Miyake, Shigeji
Otawara, Masaru
Hasegawa, Shuji
Fukaya, Yoshihiro
Kumakura, Hideyuki
Application Number:
JP2010000059593
Publication Date:
September 29, 2011
Filing Date:
March 16, 2010
Export Citation:
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Assignee:
HITACHI APPLIANCES INC
International Classes:
F04C18/02; F04C27/00; F04C29/02
Domestic Patent References:
JP2001329967A
JP2004100609A
JPH07324687A
JP2008128172A
Attorney, Agent or Firm:
ポレール特許業務法人