JPS63128284U

JPS63128284U -

Info

Publication number: JPS63128284U
Application number: JP2108987U
Authority: JP
Priority date: 1987-02-16
Filing date: 1987-02-16
Publication date: 1988-08-22

Description

[Brief explanation of the drawing]

第１〜７図は本考案による気体圧縮機の容量可
変装置の第１実施例を示す図であり、第１図はそ
の気体圧縮機の断面側面図、第２，３図は第１図
における―矢視断面図、第４，５図は第１図
における―矢視断面図、第６図は第１図にお
ける―矢視断面図、第７図は電磁バルブの断
面図、第８図は本考案による気体圧縮機の容量可
変装置の第２実施例を示すその電磁バルブの断面
図、第９図は本考案による気体圧縮機の容量可変
装置の第３実施例を示すその電磁バルブの断面図
、第１０図は従来の気体圧縮機の容量可変装置を
示すその正面断面図である。１……ケーシング、２……シリンダ、３……リ
アサイドブロツク、５……フロントサイドブロツ
ク、５ａ……円筒状段部、６……容量制御プレー
ト、７……ロータ、８ａ、８ｂ……ロータ軸、１
０……溝、１０ａ……背圧室、１１……ベーン、
１２……ベーン圧力室、１３……圧縮作業室、１
４……スラスト軸受、１５……吸入室、１６……
フロントヘツド、１７……連絡孔、１８……バイ
パス孔、１９……吐出ポート、２０……吸気通路
、２１……吸気凹部、２２……凹部、２３……吐
出弁、２４……油分離室、２５……油分離器、２
６……油供給路、３１……駆動ピン、３２……ガ
イド孔、３８……駆動軸、３８ａ……一端部、３
８ｂ……他端部、３９……駆動軸押圧バネ、４２
……係合凹部、４４……油圧室（油圧手段）、４
５……通路（油圧手段）、４７……排出通路、４
８……電磁バルブ（油圧制御手段）、５０……本
体、５１……弁通路、５２……弁座、５３……弁
体、５４……弁体押圧バネ、５５、６１……段部
、５６、５８、６０……プランジヤ、５７……電
磁コイル、５９……プランジヤ押圧バネ。 1 to 7 are diagrams showing a first embodiment of a variable capacity device for a gas compressor according to the present invention. FIG. 1 is a cross-sectional side view of the gas compressor, and FIGS. 4 and 5 are sectional views taken in the direction of the arrows in FIG. 1, FIG. 6 is a sectional view taken in the direction of the arrows in FIG. A sectional view of a solenoid valve showing a second embodiment of the variable capacity device for a gas compressor according to the present invention, and FIG. 9 is a cross-sectional view of the electromagnetic valve showing a third embodiment of the variable capacity device for a gas compressor according to the present invention. 10 are front sectional views showing a conventional variable capacity device for a gas compressor. DESCRIPTION OF SYMBOLS 1... Casing, 2... Cylinder, 3... Rear side block, 5... Front side block, 5a... Cylindrical step, 6... Capacity control plate, 7... Rotor, 8a, 8b... Rotor shaft ,1
0... Groove, 10a... Back pressure chamber, 11... Vane,
12... Vane pressure chamber, 13... Compression work chamber, 1
4... Thrust bearing, 15... Suction chamber, 16...
Front head, 17... Communication hole, 18... Bypass hole, 19... Discharge port, 20... Intake passage, 21... Intake recess, 22... Recess, 23... Discharge valve, 24... Oil separation chamber , 25...oil separator, 2
6... Oil supply path, 31... Drive pin, 32... Guide hole, 38... Drive shaft, 38a... One end, 3
8b...Other end, 39...Drive shaft pressing spring, 42
...Engagement recess, 44...Hydraulic chamber (hydraulic means), 4
5... Passage (hydraulic means), 47... Discharge passage, 4
8... Solenoid valve (hydraulic control means), 50... Main body, 51... Valve passage, 52... Valve seat, 53... Valve body, 54... Valve body pressing spring, 55, 61... Step portion, 56, 58, 60... Plunger, 57... Electromagnetic coil, 59... Plunger pressing spring.

Claims

[Scope of utility model registration request]

In a gas compressor capacity variable device used in a gas compressor whose discharge capacity is varied by rotating a capacity control plate, one end thereof is arranged to face the suction chamber and move back and forth within the suction chamber. a drive shaft for rotating the capacity control plate; a drive shaft pressing spring having a spring pressure for pressing the drive shaft to move the drive shaft outward and backward from the suction chamber; A hydraulic means having a hydraulic chamber for generating hydraulic pressure, and a hydraulic control means for controlling the hydraulic pressure of the hydraulic means, the hydraulic control means being provided in the middle of a discharge passage for discharging oil from the hydraulic chamber. , the hydraulic control means includes a main body having a valve seat at an opening of the valve passage, a valve body disposed opposite to the valve seat of the main body, and a valve body that abuts the valve seat and controls the valve passage. A valve body pressing spring that presses the valve body in a direction to close the opening, an electromagnetic coil that generates electromagnetic force,
a plunger that moves in the axial direction of the valve passage by the electromagnetic force of the electromagnetic coil and opens the opening of the valve passage by opposing the valve element pressing spring and separating the valve element from the valve seat; A variable capacity device for a gas compressor, characterized in that the hydraulic pressure of the hydraulic means is controlled by controlling the electromagnetic force of an electromagnetic coil to open and close the opening of the valve passage.