Fan wheel for a blower module

Inactive Publication Date: 2012-04-19
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005]It is an object of the invention to design a fan wheel and/or the balancing weights so as to ensure permanent

Problems solved by technology

Handling for the operator is more straightforward and the risk of the balancing weight accidentally

Method used

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  • Fan wheel for a blower module
  • Fan wheel for a blower module
  • Fan wheel for a blower module

Examples

Experimental program
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Embodiment Construction

[0020]The blower module 2 illustrated in FIG. 1 comprises a basic housing 4, on which a fan wheel 6 is mounted such that it can be rotated on a drive shaft 7. The fan wheel 6, in turn, is fastened on the drive shaft 7 by way of its hub 5. The (radial) fan wheel 6 has, on its outer end side, an axial fan ring 8, which is made up of curved fan blades 9. The (radial) fan wheel 6 also has a radial fan ring 10, which is likewise made up of curved fan blades, referred to hereinbelow as radial fan blades 12. As can be seen from FIG. 4, the radial fan ring 10 has two different types of fan blade 12. A first group comprises long fan blades which extend as far as the hub 5, and will be referred to hereinbelow as long fan blades 14, whereas a second group comprises short fan blades 16 which, as seen from the external diameter of the radial fan ring 10, extend only some way in the direction of the axis of rotation. The two groups of fan blades 14, 16 are formed alternately on the (radial) fan w...

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PUM

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Abstract

The invention relates to a fan wheel (6) for a blower module (2), comprising a hub (5) and a radial fan ring (8) composed of a plurality of fan blades (12) and further comprising means for resolving imbalances in the fan wheel (6). According to the invention, balancing weights (18) can be fastened to the radial ends of the fan blades (12).

Description

BACKGROUND OF THE INVENTION[0001]The present invention proceeds from a fan wheel for a blower module.[0002]Such blower modules are known from a wide variety of different industrial applications, for example they are used for ventilating various technical appliances or for channeling the air stream when used in air-conditioning systems of motor vehicles.[0003]In many applications, for example when used in air-conditioning systems of motor vehicles, the fans of the blower modules are balanced following installation. Usually, added or positive balancing is carried out here with balancing weights, e.g. in the form of (balancing) clips, being fitted on the fan wheel. The balancing weights here are fixed in the selected position by resilience and frictional fitting. The balancing weights are usually fastened exclusively on the (axial) inside of the fan blades, this side being directed toward the fan center point, and they are secured here by form fitting against the radially acting centri...

Claims

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Application Information

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IPC IPC(8): F01D25/04
CPCF04D29/662F04D29/281F04D29/28F04D29/66
Inventor HUBER, MARTINPRAHL, DETLEF
Owner ROBERT BOSCH GMBH
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