Vacuum pump for vehicle motors and one-way valve for said vacuum pump

A technology of vacuum pumps and check valves, applied in parts of pumping devices for elastic fluids, rotary piston type/oscillating piston type pump parts, pumps, etc., to prevent fatigue stress, regular power absorption results, and power absorption The result is more effective

Active Publication Date: 2012-08-29
O M P OFFICINE MAZZOCCO PAGNONI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in these cases, the power absorption peak of the vacuum pump occurs

Method used

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  • Vacuum pump for vehicle motors and one-way valve for said vacuum pump
  • Vacuum pump for vehicle motors and one-way valve for said vacuum pump
  • Vacuum pump for vehicle motors and one-way valve for said vacuum pump

Examples

Experimental program
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Effect test

Embodiment Construction

[0045] In the figures, a vacuum pump according to the invention is indicated with reference number 1 .

[0046] The vacuum pump 1 includes a stator 2, a chamber 3 is defined in the stator 2, and vanes 4 are rotatably installed in the chamber 3 ( figure 2 ). The vanes 4 are provided with opposite ends in sealing contact with the inner surface of the stator 2 to generate the desired low pressure.

[0047] The stator 2 comprises openings for the entry of air and oil (not shown as this is conventional per se and / or available in any convenient way to a person skilled in the art) and a closure cover 5 . From figure 2 It can be seen that, in the particular example shown therein, a first discharge opening 30 and a second discharge opening 50 are formed on the side surface 10 of the stator 2 defined by the cover 5 . The two discharge openings 30 and 50 are formed adjacent to each other and are different in size. Specifically, the first discharge opening 30 is larger in size than ...

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PUM

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Abstract

The invention relates to a vacuum pump (1) for vehicle motors, comprising a stator (2) , a chamber defined within said stator (2) and at least one vane rotatably mounted inside said chamber so as to generate a depression. The stator (2) comprises inlet openings for air and oil, and a first discharge outlet (30) on which a first one-way valve operates (35) . According to the invention, the stator (2) further comprises a second discharge outlet (50) separate from said first discharge outlet (30) and a second one-way- valve (55) operating on said second discharge outlet (50) . In this manner it is possible to separate the air discharge from the oil discharge, both physically and operationally. The invention further relates to a one-way valve for said vacuum pump. Such valve comprises a bladebody (60) having a first blade which defines a first one-way valve (35) and at least one second blade which defines at least one second one-way valve (55).

Description

technical field [0001] The invention relates to a vacuum pump for a vehicle motor. More particularly, the present invention relates preferably, but not limitedly, to a vacuum pump for a motor servo braking system of a vehicle. [0002] The invention also relates to a non-return valve for such a vacuum pump. Background technique [0003] As is well known, vehicle motors, such as heavy motor vehicles and / or powerful automobiles, usually include a vacuum pump adapted to establish a defined low pressure to actuate and operate certain devices in the vehicle, such as servo brakes. [0004] Generally, a vehicle motor vacuum pump includes a stator, a low pressure chamber defined within the stator, and a vane rotatably mounted inside the vacuum pump chamber to generate a desired low pressure. The fins are provided with opposite ends in sealing contact with the inner surface of the stator. [0005] The stator comprises inlet openings for air and lubricating oil, and outlet openings...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C29/12F04C2/344
CPCF04C2220/10F04C29/128F04C18/3442
Inventor 亚历山德拉·德兰戈乔瓦尼·帕齐安杰洛·潘科蒂
Owner O M P OFFICINE MAZZOCCO PAGNONI
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