JPS6453488U

JPS6453488U -

Info

Publication number: JPS6453488U
Application number: JP15035487U
Authority: JP
Priority date: 1987-09-30
Filing date: 1987-09-30
Publication date: 1989-04-03

Description

[Brief explanation of the drawing]

第１図〜第５図は本考案を具体化した一実施例
を示し、第１図はリヤサイドプレートの正面図、
第２図はフロントサイドプレートの正面図、第３
図はベーン圧縮機の中央部縦断面図、第４図はベ
ーン圧縮機の横断面図、第５図ａ〜ｇはそれぞれ
本考案の作用を説明するためのシリンダとロータ
及びベーンの位置関係を示す正面図、第６図〜第
７図は従来例を示し、第６図はベーン圧縮機のベ
ーン背圧制構造を示す部分正面図、第７図は同じ
く部分拡大図、第８図は他の従来例を示すベーン
背圧制御構造の部分正面図である。シリンダ……１、内周面……１ａ、フロントサ
イドプレート……２、高圧油ポート……２ｂ、リ
ヤサイドプレート……３、軸孔……３ａ、環状通
路……３ｂ、細溝……３ｃ、高圧油ポート……３
ｄ、吸入室……４、フロントハウジング……５、
リヤハウジング……６、油分離室……７、回転軸
……８、ラジアルプレーンベアリング……１０、
ロータ……１１、作動室……１２、ベーン……１
３、ベーン溝……１４、ベーン溝底部……１５、
圧縮室……１６、吸入口……１８、吐出口……１
９、吐出室……２０、連通孔……２１、油通路…
…２６、中間圧溝……２７，２８、油通路２６と
環状通路３ｂとプレーンベアリング１０の細隙と
軸孔３ａとからなる中間圧油供給通路２９、油通
路２６と環状通路３ｂとからなる高圧油供給通路
３０、ベーン溝底部１５の閉じ込み区間Ｄ、ロー
タ１１の外周面がシリンダ１の内周面１ａに極近
接する同心区間Ｔ。 1 to 5 show an embodiment embodying the present invention, and FIG. 1 is a front view of the rear side plate;
Figure 2 is a front view of the front side plate, Figure 3
The figure is a vertical cross-sectional view of the central part of the vane compressor, FIG. 4 is a cross-sectional view of the vane compressor, and FIGS. 6 and 7 show a conventional example, FIG. 6 is a partial front view showing a vane back pressure structure of a vane compressor, FIG. 7 is a partially enlarged view, and FIG. 8 is another example. It is a partial front view of a vane backpressure control structure showing a conventional example. Cylinder...1, Inner peripheral surface...1a, Front side plate...2, High pressure oil port...2b, Rear side plate...3, Shaft hole...3a, Annular passage...3b, Thin groove...3c, High pressure oil port...3
d. Suction chamber...4. Front housing...5.
Rear housing...6, Oil separation chamber...7, Rotating shaft...8, Radial plain bearing...10,
Rotor...11, Working chamber...12, Vane...1
3, Vane groove...14, Vane groove bottom...15,
Compression chamber...16, Suction port...18, Discharge port...1
9, Discharge chamber...20, Communication hole...21, Oil passage...
...26, Intermediate pressure groove...27, 28, Intermediate pressure oil supply passage 29 consisting of the oil passage 26, annular passage 3b, a gap in the plain bearing 10 and the shaft hole 3a, consisting of the oil passage 26 and the annular passage 3b The high-pressure oil supply passage 30, the confinement section D of the vane groove bottom 15, and the concentric section T in which the outer circumferential surface of the rotor 11 is very close to the inner circumferential surface 1a of the cylinder 1.

Claims

[Claims for Utility Model Registration] Front and rear side plates are joined to both end surfaces of a cylindrical cylinder, a rotor rotated by a rotating shaft is accommodated in the space formed by these members, and the rotor is rotated by a rotating shaft. A vane is accommodated so as to be able to protrude and retract in the radial direction along the formed vane groove, and the cylinder has a leading side and a trailing side in the rotor rotation direction in a concentric section where the outer peripheral surface of the rotor is closest to the inner peripheral surface of the cylinder. A suction port and a discharge port are provided, and an oil separation chamber for separating oil in the refrigerant gas discharged from the discharge port is provided on the rear side of the rear side plate, and the vane moves from the end of the compression stroke to an intermediate position of the concentric section. The period up to this point is defined as a confinement section in which the bottom of the vane groove is confined, and the oil is supplied from the oil separation chamber to either the float or the rear side plate other than the confinement zone through the intermediate pressure oil supply passage. An intermediate pressure groove for supplying intermediate pressure oil is provided in the confinement section of the side plate, and oil corresponding to the discharge pressure is supplied from the bottom of the oil separation chamber to the bottom of the vane groove at the end of the compression stroke via a high pressure oil supply passage. In a vane compressor with a possible high-pressure oil port opened, after the bottom of the vane groove is separated from the end of the intermediate pressure groove, the tip of the vane passes the starting point of the discharge port,
The bottom of the vane groove becomes a confined space until reaching approximately the middle position of the discharge port, and the tip of the vane passes from the middle position of the discharge port to the starting point of the concentric section and reaches the middle position of the concentric section. During this period, the bottom of the vane groove communicates only with the high pressure oil port, and thereafter, from the intermediate position of the concentric section to the beginning of the suction stroke, the bottom of the vane groove communicates with both the high pressure oil port and the intermediate pressure groove. A vane back pressure control structure in a vane compressor in which the opening position of the high pressure oil port is set.