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Title:
SCROLL COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2017/163836
Kind Code:
A1
Abstract:
[Problem] To provide a scroll compressor configured so that, regardless of an operating range, a back pressure load acting against the thrust load of a movable scroll is maintained appropriately to improve durability and performance. [Solution] A back pressure control mechanism 12 for controlling a back-pressure load F2 which includes back pressure and which acts against the thrust load F1 of a movable scroll 3 has: a high-pressure flow passage 7d providing communication between a discharge chamber 8a and a back-pressure chamber 10 and supplying to the back-pressure chamber 10 high-pressure fluid on which the discharge pressure of operating fluid acts; a medium-pressure flow passage 7m providing communication between the discharge chamber 8a and the back-pressure chamber 10 and supplying to the back-pressure chamber 10 medium-pressure fluid obtained by reducing the pressure of the high-pressure fluid; a high-pressure chamber Pd to which the high-pressure fluid passage 7d is open; an intermediate-pressure chamber Pm to which the intermediate-pressure fluid passage 7m is open; a communication flow passage 16 providing communication between the high-pressure flow passage 7d and the intermediate-pressure flow passage 7m and supplying to the intermediate-pressure flow passage 7m the high-pressure fluid in the high-pressure flow passage 7d; and a regulation valve 18 for opening and closing the communication flow passage 16 to regulate pressure in the high-pressure flow passage 7d.

Inventors:
HONDA HIROSHI (JP)
KOWADA YOSHIO (JP)
TESHIMA ATSUO (JP)
MAEMURA YOSHINOBU (JP)
KABURAGI MISAKO (JP)
Application Number:
JP2017/008762
Publication Date:
September 28, 2017
Filing Date:
March 06, 2017
Export Citation:
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Assignee:
SANDEN HOLDINGS CORP (JP)
International Classes:
F04C18/02
Foreign References:
JP2015105636A2015-06-08
JPS6075790A1985-04-30
JP2016011604A2016-01-21
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