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Side channel compressor

a compressor and side channel technology, applied in mechanical equipment, non-positive displacement pumps, liquid fuel engines, etc., can solve the problems of annoying side channel compressor frequency, and achieve the effect of facilitating silent operation

Inactive Publication Date: 2010-09-02
GARDNER DENVER DEUTLAND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005]It is the object of the invention to provide a side channel compressor which ensures a particularly silent operation.
[0006]This object is achieved by a side channel compressor for compressing a gas the side channel compressor comprising a housing; a side channel located in the housing for compressing a gas; a gas inlet opening formed in the housing which is in flow connection with the side channel for introducing a gas to be compressed; a gas outlet opening formed in the housing for discharging the gas to be compressed from the side channel, the gas outlet opening being in flow connection with the gas inlet opening by way of the side channel; and an impeller which is mounted for rotary drive in the housing and has at least two impeller blades disposed in the side channel, wherein at least one impeller blade has at least one flow recess in its free edge region. The essence of the invention is that at least one flow recess is provided in the free edge region of at least one impeller blade of the side channel compressor. The free edge region is the region which is located in the side channel and which may be surrounded by the gas to be compressed. The at least one flow recess or the amount of gas flowing through this flow recess, respectively, reduces gas turbulence structures and / or periodic gas flow structures occurring at the trailing side of the impeller blades. This ensures a particularly silent operation of the side channel compressor.

Problems solved by technology

In conventional side channel compressors, tonal sound components occur at certain frequencies of the side channel compressor which are extremely annoying if they differ from the broadband sound spectrum by more than 7 dB.

Method used

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Embodiment Construction

[0026]A side channel compressor shown in FIGS. 1 to 3 for compressing a gas comprises an impeller 2 which is provided with impeller blades 1 and is mounted in a housing 3 for rotation about a horizontal central longitudinal axis 4. A conventional drive 6 serves for rotary drive of the impeller 2 in the direction of the arrow 5. The gas is thus transported through the housing 3 in the direction of the arrow 5 as well.

[0027]The housing 3 comprises a housing body 7 and a demountable housing cover 8 which are joined together according to FIGS. 1 and 2 so as to enclose the impeller 2 comprising the impeller blades 1 which is drivable for rotation and is disposed on a drive shaft 9 for co-rotation therewith.

[0028]The impeller 2 is provided with a single blade ring and is designed like a disk. The impeller 2 comprises an inner impeller hub 10 with a central circular hub bore 11. The impeller hub 10 is formed by an inner hub foot 12 which radially outwardly delimits the hub bore 11, and by ...

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Abstract

The invention concerns a side channel compressor for compressing a gas, the side channel compressor comprising a housing (3), a side channel (30) located in the housing (3) for compressing a gas, a gas inlet opening which is formed in the housing (3) and is in flow connection with the side channel (30) for introducing a gas to be compressed, a gas outlet opening (32) formed in the housing (3) for discharging the gas to be compressed from the side channel (30), the gas outlet opening (32) being in flow connection with the gas inlet opening (31) by way of the side channel (30), and a impeller (2) mounted for rotary drive in the housing (3), the impeller (2) having at least two impeller blades (1) disposed in the side channel, wherein at least one impeller blade (1) has a flow recess in its free edge region (47).

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The invention concerns a side channel compressor for compressing a gas. The invention therefore concerns a work machine for compressing gases, such as air or technical gases.[0003]2. Background Art[0004]The operation of the side channel compressor results in a broadband sound spectrum. In conventional side channel compressors, tonal sound components occur at certain frequencies of the side channel compressor which are extremely annoying if they differ from the broadband sound spectrum by more than 7 dB.SUMMARY OF THE INVENTION[0005]It is the object of the invention to provide a side channel compressor which ensures a particularly silent operation.[0006]This object is achieved by a side channel compressor for compressing a gas the side channel compressor comprising a housing; a side channel located in the housing for compressing a gas; a gas inlet opening formed in the housing which is in flow connection with the side ch...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F01D5/00
CPCF04D23/008F04D29/666F04D29/284F05D2250/182F05D2240/307
Inventor DITTMAR, RUDIGROHMANN, THOMASKEMPF, MARIO
Owner GARDNER DENVER DEUTLAND
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