Title:
VARIABLE VANE PUMP
Document Type and Number:
WIPO Patent Application WO/2016/017710
Kind Code:
A1
Abstract:
Conventional variable vane pumps retain working fluid inside a compression chamber when a cam ring has moved to a pressing member side from an eccentric position at the reverse side of the rotor from the pressing member and exhibit the problem of high temperatures in the compression chamber. This variable vane pump has a communication part 31. When a cam ring 7 has moved to a pressing member 10 side from an eccentric position at the reverse side of a rotor 5 from the pressing member 10, i.e. when the variable vane pump has changed from a full flow state to a dead head state, the communication part 31 changes from a state in which a compression chamber 9 and an outer space 11 that is radially outward of the cam ring 7 are not in communication to a state in which the compression chamber 9 and the outer space 11 are in communication.
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Inventors:
HABIRO TAKUICHI
Application Number:
PCT/JP2015/071533
Publication Date:
February 04, 2016
Filing Date:
July 29, 2015
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
F04C14/22; F04C2/344; F04C14/28; F04C15/06
Foreign References:
| JP2013024224A | 2013-02-04 | |||
| JP2000120560A | 2000-04-25 | |||
| JPH0544657A | 1993-02-23 | |||
| JP2007321599A | 2007-12-13 | |||
| JPS6032580U | 1985-03-05 |
Attorney, Agent or Firm:
KAJI, SUHARA & ASSOCIATES (JP)
特許業務法人梶 and the Suhara patent firm (JP)
特許業務法人梶 and the Suhara patent firm (JP)
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