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Title:
SCROLL TYPE COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2001/042658
Kind Code:
A1
Abstract:
A scroll type compressor, wherein a compression chamber (16) is formed of a fixed scroll (2) and a movable scroll (4), a first back pressure chamber (14) is formed at the rear of the movable scroll (4), fluid with a delivery pressure is led into the first back pressure chamber, an unloader mechanism (11) for leading refrigerant gas in the compression chamber (16a) during compression is provided, a control part (31) for controlling the unloader mechanism (11) is provided and, when a release force tends to exceed a pressing force, the control part detects the status and operates the unloader part to lead the fluid in the compression chamber during compression to an intake port side, whereby the release force is lowered even if the pressing force is lowered to provide a relatively sufficient pressing force so as to reduce an internal leak.

Inventors:
Shibamoto, Yoshitaka (Rinkai Factory of Sakai Plant of Daikin Industries, Ltd. 12 Chikkou-shinmachi 3-cho Sakai-shi, Osaka, 592-8331, JP)
Kajiwara, Mikio (Rinkai Factory of Sakai Plant of Daikin Industries, Ltd. 12 Chikkou-shinmachi 3-cho Sakai-shi, Osaka, 592-8331, JP)
Kitaura, Hiroshi (Rinkai Factory of Sakai Plant of Daikin Industries, Ltd. 12 Chikkou-shinmachi 3-cho Sakai-shi, Osaka, 592-8331, JP)
Ishiguro, Suguru (Rinkai Factory of Sakai Plant of Daikin Industries, Ltd. 12 Chikkou-shinmachi 3-cho Sakai-shi, Osaka, 592-8331, JP)
Application Number:
PCT/JP2000/006927
Publication Date:
June 14, 2001
Filing Date:
October 04, 2000
Export Citation:
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Assignee:
DAIKIN INDUSTRIES, LTD. (Umeda Center Bldg. 4-12, Nakazaki-nishi 2-chome Kita-ku, Osaka-shi Osaka, 530-8323, JP)
Shibamoto, Yoshitaka (Rinkai Factory of Sakai Plant of Daikin Industries, Ltd. 12 Chikkou-shinmachi 3-cho Sakai-shi, Osaka, 592-8331, JP)
Kajiwara, Mikio (Rinkai Factory of Sakai Plant of Daikin Industries, Ltd. 12 Chikkou-shinmachi 3-cho Sakai-shi, Osaka, 592-8331, JP)
Kitaura, Hiroshi (Rinkai Factory of Sakai Plant of Daikin Industries, Ltd. 12 Chikkou-shinmachi 3-cho Sakai-shi, Osaka, 592-8331, JP)
Ishiguro, Suguru (Rinkai Factory of Sakai Plant of Daikin Industries, Ltd. 12 Chikkou-shinmachi 3-cho Sakai-shi, Osaka, 592-8331, JP)
International Classes:
F04C28/00; F04C18/02; F04C27/00; F04C28/16; F04C28/26; F04C28/28; (IPC1-7): F04C18/02
Foreign References:
JPH10110689A
JPH0626470A
JPS58122386A
Other References:
See also references of EP 1158166A1
Attorney, Agent or Firm:
Fukami, Hisao (Sumitomo Bank Minamimori-machi Bldg. 1-29, Minamimori-machi 2-chome Kita-ku, Osaka-shi Osaka, 530-0054, JP)
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