CONTROL VALVE FOR VARIABLE DISPLACEMENT COMPRESSOR

• Main Authors: SAEKI SHINJI, TONEGAWA MASAAKI
• Format: Patent
• Language: English; Japanese
• Published: 19.01.2015
• 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

PROBLEM TO BE SOLVED: To provide a control valve for a variable displacement compressor capable of more effectively producing a bleeding function.SOLUTION: A control valve 1 is configured so that a suction pressure Ps to displace an auxiliary valve element 36 in a valve opening direction after closing a main valve is variable according to a supply current value to a solenoid 3. A body 5 includes a port 14 communicating with a crank chamber of a compressor, and a port 12 communicating with a suction chamber. An auxiliary valve chamber 26 having a larger diameter than a main valve hole 20 is disposed between the port 14 and the main valve hole 20. An auxiliary valve is disposed in the auxiliary valve chamber 26. 【課題】ブリード機能をより効果的に発揮することができる可変容量圧縮機用制御弁を提供する。【解決手段】制御弁１は、ソレノイド３への供給電流値に応じて、主弁の閉弁後に副弁体３６を開弁方向に変位させる吸入圧力Ｐｓが可変となるように構成される。ボディ５には、圧縮機のクランク室に連通するポート１４と吸入室に連通するポート１２が設けられる。ポート１４と主弁孔２０との間には主弁孔２０よりも大径の副弁室２６が設けられ、その副弁室２６に副弁が配置される。【選択図】図２