Title:
VARIABLE DISPLACEMENT COMPRESSOR CONTROL VALVE
Document Type and Number:
WIPO Patent Application WO/2017/057160
Kind Code:
A1
Abstract:
[Problem] To provide a function for discharging pressure from a crank chamber to a suction chamber and eliminating leakage from a discharge pressure introduction space to a suction pressure introduction space in a control valve for adjusting a pressure introduction amount from a discharge chamber to a crank chamber. [Solution] This control valve 50 has: a valve chamber 58 (valve chamber connecting chamber) that connects to a discharge chamber; a valve hole 59 (crank chamber connecting chamber) that is arranged next to the valve chamber 58 in the axial direction and connects to a crank chamber; and a pressure-sensitive chamber 60 (suction chamber connecting chamber) that is formed on a side opposite the valve chamber 58 in the axial direction with respect to the valve hole 59 via a partition wall and connects to the suction chamber. The control valve 50 is provided with: a bellows 67 (pressure-sensitive member) that is disposed in the pressure-sensitive chamber 60 and expands and contracts due to pressure inside the pressure-sensitive chamber; a pressure-sensitive rod guide hole 61 (through hole) that is formed in the partition wall; a pressure-sensitive rod 512 that moves the pressure-sensitive rod guide hole 61 along with the expansion and contraction of the bellows 67; a valve body 51 that is housed in the valve chamber 58 and opens and closes an opening from the valve chamber 58 to the valve hole 59; and a connection path 515 that is formed in the pressure-sensitive rod 512 and makes it possible to connect the valve hole 59 and the pressure-sensitive chamber 60.
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Inventors:
KAZAHAYA YUKIO (JP)
HAYASHI SAKAE (JP)
HAYASHI SAKAE (JP)
Application Number:
PCT/JP2016/077916
Publication Date:
April 06, 2017
Filing Date:
September 22, 2016
Export Citation:
Assignee:
VALEO JAPAN CO LTD (JP)
International Classes:
F04B27/18; F04B49/22; F16K31/06; F16K31/126
Foreign References:
| JPH09268973A | 1997-10-14 | |||
| JP2013087863A | 2013-05-13 |
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