Noise-reducing air pump

Abstract

An air pump comprising: a pump rotor for conveying a gaseous medium; a pump housing in which the pump rotor is rotatably accommodated; a delimiting element closing the pump housing in the axial direction; and a closing element which, together with the delimiting element, forms a muffler. The delimiting element has an opening for transferring the medium between the pump housing and the silencer, and a web extending in the axial direction which surrounds the opening in the radial direction, wherein the closing element is axially Lean against the connecting plate in the direction.

Description

Background technique [0001] For conveying gaseous media, various pumps are used, for example, in the area of ​​motor vehicles. To generate the low pressure, which is necessary, for example, in low-pressure controlled brake boosters, vane pumps are usually used. As in most pumps, the pulsation of the medium delivered by the vane pump causes noise which can be uncomfortable for persons in the motor vehicle area. [0002] DE19936644A1 proposes the construction of an air pump with an integrated muffler, wherein the muffler is a cylindrical cavity into which the medium flowing out of the pump chamber flows. The cap member houses the pump chamber and encloses a cavity between the pump chamber and the inner boundary of the cap. Contents of the invention [0003] The object of the present invention is to provide a pump with an integrated silencer that is easy to manufacture. [0004] The problem of the invention is solved by a pump having the features of claim 1 . The dependent ...

AI Technical Summary

Problems solved by technology

As in most pumps, the medium output by the vane pump is affected by the pulsation and causes noise, which can make people in the motor vehicle area uncomfortable

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