SCROLL FLUID MACHINE - DAIKIN IND LTD

Title:

SCROLL FLUID MACHINE

Document Type and Number:

Japanese Patent JP2005155568

Kind Code:

A

Abstract:

To provide a scroll fluid machine capable of adjusting the capacity in a plurality of stages, and preventing degradation in the efficiency.

The scroll fluid machine comprises a fixed scroll (21) and a movable scroll (22) having a spiral wrap (24) in an end plate (23). A polymer actuator (40) to adjust the clearance between the wrap (24) and the end plate (23) is provided in a recessed part at a tip of the wrap (24). The shape of the polymer actuator (40) is changed in the height direction of the wrap (24) to adjust the clearance. The polymer actuator (40) is also used for a seal member between the end plate (23) and the wrap (24). On the other hand, the recessed part is formed so that the thickness of an inner wall between the recessed part and an inner circumferential surface of the wrap (24) is different from the thickness of an outer wall between the recessed part and an outer circumferential surface of the wrap (24).

Inventors:

MASUDA MASANORI
AZUMA HIROFUMI
HOKOTANI KATSUMI

Application Number:

JP2003398642A

Publication Date:

June 16, 2005

Filing Date:

November 28, 2003

Export Citation:

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Assignee:

DAIKIN IND LTD

International Classes:

F04C18/02; F04C18/08; F04C27/00; F04C28/26; (IPC1-7): F04C18/02

Domestic Patent References:

JPH06288362A	1994-10-11
JPH03134287A	1991-06-07
JP2002213378A	2002-07-31
JP2001221177A	2001-08-17
JPH1068392A	1998-03-10
JPH0968177A	1997-03-11
JPH0599808A	1993-04-23

Attorney, Agent or Firm:

Hiroshi Maeda
Hiroshi Koyama
Hiroshi Takeuchi
Yuji Takeuchi
Katsumi Imae
Tomoo Harada

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