Title:
VARIABLE CAPACITY COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2020/026699
Kind Code:
A1
Abstract:
[Problem] To simplify the structure of a second control valve for pressure relief of a crank chamber in a variable capacity compressor. [Solution] A second control valve 400 adjusts the opening degree of a discharge passage 146 according to a difference between the pressure of downstream-side region of a supply passage 145, which is more toward a crank chamber 140 than a first control valve 300, and the pressure of the crank chamber 140. An accommodation chamber 101d includes: a first port 152a that communicates with the downstream-side region; a second port 101e that communicates with the crank chamber 140; and a third port 101f that communicates with a suction chamber 141. A valve body 401 includes: a valve part 401a; an insertion part 401b capable of being inserted into the second port 101e; and a partition part 401c. A length L1 from one end surface 401a1 of the valve body 401 to an insertion distal end 401b1 of the insertion part 401b is shorter than a length L2 of the entire accommodation chamber 101d. In a state in which the insertion distal end 401b1 is inserted into the second port 101e, a throttle section 146a of the discharge passage 146 is formed between the outer circumferential surface of the insertion part 401b and the inner circumferential surface of the second port 101e.
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Inventors:
ISHIKAWA TSUTOMU (JP)
SATO JUNYA (JP)
SATO JUNYA (JP)
Application Number:
PCT/JP2019/026802
Publication Date:
February 06, 2020
Filing Date:
July 05, 2019
Export Citation:
Assignee:
SANDEN AUTOMOTIVE COMPONENTS CORP (JP)
International Classes:
F04B27/18; F04B49/12
Foreign References:
| JP2010106677A | 2010-05-13 | |||
| JP2017214877A | 2017-12-07 |
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