JPH01148082U

JPH01148082U -

Info

Publication number: JPH01148082U
Application number: JP4341388U
Authority: JP
Priority date: 1988-03-31
Filing date: 1988-03-31
Publication date: 1989-10-13
Also published as: JPH0442547Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例であるベーンポンプ
を示す模式図、第２図はベーンポンプの分解斜視
図、第３図はベーンポンプの圧力分布状態を示す
分布図、第４図は本考案の他の実施例であるベー
ンポンプを示す模式図、第５図は本考案のさらに
他の実施例であるベーンポンプを示す模式図であ
る。第６図は従来例のベーンポンプを示す模式図
、第７図は従来例のベーンポンプにおける摩耗状
態を説明するための模式図、第８図は従来例の吐
出口における摩耗状態を説明するための拡大部分
断面図である。１２……ポンププレート、１３……ポンプリン
グ、１４……ポンプヘツド、１５……ポンプ室、
１６……ロータ、１７……ベーン溝、１８……ロ
ーラ（ベーン）、１９……圧力室、２０……吐出
口、２１……圧縮行程側の高圧導入部、２４……
吸込口、２６……凹部、３０……圧力抜き口、３
０ａ……圧力抜き溝。 Fig. 1 is a schematic diagram showing a vane pump that is an embodiment of the present invention, Fig. 2 is an exploded perspective view of the vane pump, Fig. 3 is a distribution diagram showing the pressure distribution state of the vane pump, and Fig. 4 is a schematic diagram showing a vane pump that is an embodiment of the present invention. FIG. 5 is a schematic diagram showing a vane pump according to another embodiment of the present invention. FIG. Fig. 6 is a schematic diagram showing a conventional vane pump, Fig. 7 is a schematic diagram for explaining the state of wear in the conventional vane pump, and Fig. 8 is an enlarged diagram for explaining the state of wear at the discharge port of the conventional example. FIG. 12...Pump plate, 13...Pump ring, 14...Pump head, 15...Pump chamber,
16...Rotor, 17...Vane groove, 18...Roller (vane), 19...Pressure chamber, 20...Discharge port, 21...High pressure introduction part on the compression stroke side, 24...
Suction port, 26... recess, 30... pressure release port, 3
0a...Pressure relief groove.

Claims

[Scope of Claim for Utility Model Registration] 1. A pump chamber, a rotor eccentrically disposed in the pump chamber so as to be rotatable, a plurality of grooves provided on the outer periphery of the rotor, and a plurality of grooves capable of moving forward and backward into each of these grooves. A pressure chamber is formed by the inserted vane, the space between adjacent vanes, the pump chamber, and the rotor, and the volume increases and decreases as the rotor rotates, and the pressure chamber gradually increases in volume. It is equipped with a suction port which is connected to a pressure chamber whose volume decreases, and a discharge port which is connected to a pressure chamber whose volume decreases, and the number of vanes is n.
As, the pitch between each vane is the angle (360/n
) degrees, the starting end of the suction port in the pump rotational direction is at an angle of (360/n) or less from the top clearance position of the pump chamber in the pump rotational direction and from the end of the discharge port (360/n). ) degree or more, the end of the suction port is set at an angle of approximately (180-180/n) degrees from the top clearance position, and the starting end of the discharge port is also set at an angle of approximately (180-180/n) degrees from the top clearance position. 180+180/n) degrees, and the interval between the suction port and the discharge port is set to be one pitch or more of the vane. 2. A pump chamber, a rotor eccentrically disposed in the pump chamber so as to be freely rotatable, a plurality of grooves provided on the outer periphery of the rotor, and vanes fitted into each of these grooves so as to be freely retractable. A pressure chamber is formed between adjacent vanes, a pump chamber, and a rotor, and its volume increases and decreases as the rotor rotates, and a suction port communicates with the pressure chamber whose volume gradually increases. What is claimed is: 1. A vane pump comprising a discharge port communicating with a pressure chamber that is gradually contracting, characterized in that the discharge port at a portion corresponding to an inclined region of each vane is divided into a plurality of parts. 3. A pump chamber, a rotor eccentrically arranged in the pump chamber so as to be freely rotatable, a plurality of grooves formed on the outer periphery of the rotor, and vanes fitted into each of these grooves so as to be freely retractable. A pressure chamber is formed between adjacent vanes, a pump chamber, and a rotor, and its volume increases and decreases as the rotor rotates, and a suction port communicates with the pressure chamber whose volume gradually increases. A vane pump equipped with a discharge port communicating with a pressure chamber that is decreasing in size, characterized in that the width of the discharge port in the radial direction is set to approximately 1/2 or less of the diameter of the vane. vane pump.