CONTROL VALVE FOR VARIABLE DISPLACEMENT COMPRESSOR

PROBLEM TO BE SOLVED: To keep a smooth operation of a valve body while assuring a sealability of a sliding part at a control valve for a variable displacement compressor.SOLUTION: A control valve of a certain preferred embodiment of this invention comprises: a body including a valve hole connecting...

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Bibliographic Details
Main Authors KOBAYASHI IKU, SHIMAZAKI SATOSHI, MIYAZAKI MICHIYOSHI, SAKAKIBARA HIDEKAZU, ODAKA TAMOTSU
Format Patent
LanguageEnglish
Japanese
Published 16.11.2017
Subjects
ACTUATING-FLOATS
BLASTING
COCKS
DEVICES FOR VENTING OR AERATING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
TAPS
THERMAL INSULATION IN GENERAL
VALVES
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To keep a smooth operation of a valve body while assuring a sealability of a sliding part at a control valve for a variable displacement compressor.SOLUTION: A control valve of a certain preferred embodiment of this invention comprises: a body including a valve hole connecting a discharging pressure chamber with a crank pressure chamber and a guide hole formed in coaxial with the valve hole; an operation rod 36 slidably supported at the guide hole and provided with a valve body for opening or closing a valve part while being moved to or away from the valve hole; a solenoid to apply a solenoid force in an opening or closing direction of the valve part through the operation rod; and a seal storing part formed between the operation rod 36 and the guide hole for storing a seal member to restrict leakage of refrigerant from a high pressure side to a low pressure side. This invention is configured in such a way that a clearance at the higher pressure side is larger than that of the seal storing part and a clearance at a lower pressure side is larger than that of the seal storing part between the operation rod 36 and the guide hole.SELECTED DRAWING: Figure 4 【課題】可変容量圧縮機用制御弁において摺動部のシール性を確保しつつ、弁体の円滑な作動を維持する。【解決手段】ある態様の制御弁においては、吐出圧力室とクランク圧力室とをつなぐ弁孔と、弁孔と同軸状に形成されるガイド孔と、が設けられるボディと、ガイド孔に摺動可能に支持される一方、弁孔に接離して弁部を開閉する弁体が設けられる作動ロッド３６と、弁部の開閉方向のソレノイド力を作動ロッドを介して弁体に作用させるソレノイドと、作動ロッド３６とガイド孔との間に形成され、高圧側から低圧側への冷媒の漏洩を規制するシール部材を収容するためのシール収容部と、を備える。作動ロッド３６とガイド孔との間において、シール収容部よりも高圧側のクリアランスのほうがシール収容部よりも低圧側のクリアランスよりも大きくなるように構成されている。【選択図】図４
Bibliography:Application Number: JP20170154994