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Vane pump

一种叶片泵、叶片的技术，应用在泵、旋转活塞式泵、旋转活塞式机械等方向，能够解决效率变差、工作液泄漏等问题

Inactive Publication Date: 2008-05-28
MATSUSHITA DENKO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the working fluid easily leaks through the gap between the inner peripheral surface 2a of the rotor cavity 2 and the front end of the vane 4.
Therefore, the efficiency of the pump becomes poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings, which are incorporated herein as a part of this invention.

[0026] According to an embodiment of the present invention, the vane pump 1 shown in FIGS. 1-3 comprises a housing 10 having a rotor chamber 2 eccentrically housing a rotor 3 inside it. Several vanes 4 are mounted on the rotor 3 , each vane 4 having a front end in sliding contact with the inner peripheral surface 2 a of the rotor chamber 2 . The housing 10 is provided with an inlet 6 and an outlet 7 leading to the rotor cavity 2 . When the rotor 3 is rotationally driven, the volume of the working chamber 5 surrounded by the inner peripheral surface of the rotor chamber 2, the outer peripheral surface 3a of the rotor 3 and the vanes 4 changes, and the working fluid entering the working chamber 5 from the inlet 6 passes through the outlet 7 is discharged. The structure of such a vane pump 1 will ...

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PUM

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Abstract

A vane pump comprises: a rotor chamber; a rotor accommodated in the rotor chamber; a plurality of vanes connected to the rotor, each vane having a front end in sliding contact with the inner peripheral surface of the rotor chamber. The vane pump includes a working chamber surrounded by the inner peripheral surface of the rotor chamber, the outer peripheral surface of the rotor and the vanes; an inlet through which the working fluid is introduced into the working chamber; and an outlet through which the working fluid is discharged from the working chamber . A cutout portion is formed on at least one of the front side and the rear side of the front end portion of each blade, the front end of each blade having a smaller width than the root portion of each blade.

Description

technical field [0001] The present invention relates to vane pumps. Background technique [0002] Vane pumps generally known in the art include, for example, that illustrated in FIG. 8 . This vane pump 1 has a rotor chamber 2 and a rotor 3 accommodated eccentrically in the rotor chamber 2 . A plurality of vane slots 19 and vanes 4 slidably moving in each vane slot 19 are radially formed on the rotor 3 . Each blade 4 can move freely along the radial direction of the rotor 3 . When the rotor 3 is rotationally driven, the front end of each blade 4 is in sliding contact with the inner peripheral surface 2a of the rotor chamber 2, thereby being surrounded by the inner peripheral surface of the rotor chamber 2, the outer peripheral surface 3a of the rotor 3 and the blades 4 The volume of the working chamber 5 changes, and the working fluid entering the working chamber 5 from the inlet 6 is discharged from the outlet 7 . As an example, Japanese Patent Laid-Open Application No. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C2/344F04C18/344
CPCF04C2/3442F01C21/0809F04C18/00F04C2/344
Inventor 西方政昭日下部毅法上司山本宪长野正树
Owner MATSUSHITA DENKO KK