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Vane Pump Unit

A technology of vane pumps and vanes, which is applied to pumps, parts of pumping devices for elastic fluids, pump elements, etc., can solve the problems of increasing the torque of the driving pump, increasing the pressure, etc., and achieve the effect of reducing the torque

Active Publication Date: 2019-06-14
HITACHI ASTEMO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This increases the pressure that pushes the vane tips against the inner circumferential cam surface of the cam ring and increases the torque required to drive the pump in rotation, which is a problem

Method used

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  • Vane Pump Unit
  • Vane Pump Unit
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0030] figure 1 is an external view of the vane pump device 1 (hereinafter simply referred to as "vane pump 1") in the embodiment.

[0031] figure 2 is a perspective view showing a part of the structural components of the vane pump 1 viewed from the case cover 120 side.

[0032] image 3 is a perspective view showing a part of the structural parts of the vane pump 1 viewed from the casing 110 side.

[0033] Figure 4 is a cross-sectional view showing the flow path of the high-pressure oil of the vane pump 1, and is along Figure 6A A cross-sectional view taken along the line IV-IV in the figure.

[0034] Figure 5 is a cross-sectional view showing the flow path of the low-pressure oil of the vane pump 1, and is along Figure 6A A cross-sectional view taken along line V-V in .

[0035] The vane pump 1 is a pump driven by engine power of a...

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PUM

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Abstract

A vane pump device. The inner plate cam ring side recess is formed in the cam ring side end surface of the inner plate, communicates with and supplies working fluid to the columnar groove, which is a center side space in the blade groove. The inner plate cam ring side recess is divided into sections between a first side discharge port through which working fluid is discharged from the pump chamber at a first discharge pressure and a second side suction port through The second side suction port, the working fluid is sucked into the pump chamber, and the pump chamber discharges the working fluid at the second discharge pressure. An angle of the partition in a rotation direction is smaller than or equal to an angle between the first side discharge port and the second side suction port.

Description

technical field [0001] The present invention relates to vane pump devices. Background technique [0002] For example, the vane pump disclosed in Japanese Patent Application Laid-Open No. 2013-50067 includes a main discharge port on a high discharge pressure side and a secondary discharge port on a low discharge pressure side where the discharge pressure is relatively low. High, the discharge pressure is lower on the low discharge pressure side. In this vane pump, two arc-shaped high-pressure oil introduction ports introduce the high-discharge pressure oil of the high-pressure chamber into the bottom side space of a part of the vane groove in the circumferential direction of the rotor, and the two arc-shaped high-pressure The oil introduction ports are arranged around the central hole of the inner plate so as to face each other on the same diameter of the inner plate. An annular back pressure groove is provided in the surface of the outer plate adjacent to the other surface...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C2/344F04C15/00F04C15/06
CPCF04C2/3443F04C15/00F04C15/06F04C2220/40F01C21/108F04C15/0042F04C2210/206F04C2/3446F01C21/0863F04C2/348F04C13/001F04C15/008F04C15/0061F04C2240/50B62D5/14F04C29/12F01C21/0809F01C21/0836
Inventor 西川岁生
Owner HITACHI ASTEMO LTD