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Rotary vacuum pump with rotor end grooves

A vacuum pump and rotor technology, used in rotary piston pumps, rotary piston/oscillating piston pump components, rotary piston machines, etc., can solve problems such as consumption and achieve the effect of reducing noise.

Active Publication Date: 2021-07-27
WABCO EURO BVBA SPRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The outlet is usually connected to the engine crankcase so the exhaust gases are consumed by the engine via the PCV system

Method used

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  • Rotary vacuum pump with rotor end grooves
  • Rotary vacuum pump with rotor end grooves
  • Rotary vacuum pump with rotor end grooves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] According to a preferred embodiment of the invention, the rotary vacuum pump 1 comprises a housing 2 defining a pump chamber 4 in the housing 2 . The housing 2 is substantially cup-shaped with a first axial end plate 8 forming a bottom and a radial side wall 5 terminating at a rim 9 .

[0031] A rotor 6 is arranged in the chamber 4, and the following will be about image 3 , Figure 4 and Figure 5 The rotor 6 is described in more detail.

[0032] According to this embodiment, the rotor 6 comprises radial slots 7 in which the individual blades 10 are seated. When the rotor 6 rotates, the blades 10 can be figure 1 Swipe in the direction of the arrow shown in . The rotor 6 is relative to its axis of rotation A (see image 3 ) is fixed in the chamber 4 and forces the blade 10 to slide back and forth as it rotates. The blade 10 is provided with two seals 11a, 11b which are in contact with the inner wall of the chamber 4 at their axial ends. This structure is known i...

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PUM

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Abstract

A rotary vacuum pump comprising: a housing defining a pump chamber in the housing; and a rotor extending into the pump chamber through a first axial end plate and carrying at least one a vane for rotationally moving the vane within the pump chamber, the rotor comprising an annular axial end face sealed against a corresponding contact surface of a second axial end plate, wherein , an annular groove is used to reduce noise generation of the rotary vacuum pump during operation, wherein the groove is formed at the axial end face of the rotor and / or the second axial end plate at the contact surface.

Description

technical field [0001] The invention relates to a rotary vacuum pump comprising: a housing defining a pump chamber in the housing; and a rotor extending into the pump chamber through a first axial end plate, and Carrying at least one vane for rotational movement of the vane within the pump chamber, the rotor includes an annular axial end face sealed against a corresponding contact surface of the second axial end plate. Furthermore, the invention relates to a use. Background technique [0002] Vacuum pumps of the type described above can be fitted to road vehicles with gasoline or diesel engines. Typically, the vacuum pump is driven by the engine's camshaft. Therefore, in most vehicles, the vacuum pump is mounted to the upper area of ​​the engine. However, configurations are also known in which the vacuum pump is mounted to the lower region of the engine, in which case the vacuum pump may be driven by eg an electric motor. In general, two different construction types of v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01C21/10F04C25/02F04C29/06F04C18/344F04C29/02F04C27/00
CPCF01C21/108F04C25/02F04C27/006F04C29/02F04C18/344F04C2240/20F04C2240/54F04C29/06F01C21/10F04C27/005F04C2220/10
Inventor 大卫·希普斯菲利普·萨克斯顿彼得·托德曼
Owner WABCO EURO BVBA SPRL