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Fan wheel

a technology of fan wheel and rotor, which is applied in the direction of propellers, propulsive elements, water-acting propulsive elements, etc., can solve the problems of clip-on weights moving in position, and achieve good secure balancing results

Inactive Publication Date: 2006-10-19
EBM PAPST LANDSHUT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a fan wheel with stable and reliable balancing results. The fan wheel has a simple and reliable structure, with a ring that can securely hold balancing weights in place. The balancing weights can be fixed in a variety of positions on the ring, and the ring can be designed to have a large number of fixing positions. The fan wheel is also designed to have good delivery output and can be easily integrated with an electric motor.

Problems solved by technology

A disadvantage in that case is that the clip-on weights can move in position, upon acceleration of the fan wheel.

Method used

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Embodiment Construction

[0029] Referring firstly to FIG. 1 shown therein is a fan wheel which is identified generally by reference numeral 1 and which may comprise for example plastic material. The fan wheel 1 can be used for example for cooling an electric motor and electronic components thereof. For that purpose the fan wheel 1 has a hub 2, in the center of which there is provided an axially extending fitting opening 3, by means of which the fan wheel 1 can be fitted on to the shaft of an electric motor and secured relative to the shaft to prevent rotation with respect thereto.

[0030] The fan wheel 1 has a plurality of blades 4, in this embodiment five blades, which are distributed uniformly over the periphery of the fan wheel 1 and which extend substantially radially outwardly from the hub 2. It will be noted that all the blades 4 are identical and are curved in the peripheral direction in their radially outward extent and are set at an angle relative to the axial center line 5 of the fan wheel 1.

[0031...

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PUM

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Abstract

A fan wheel comprises a hub and a plurality of blades extending radially outwardly from the hub. A ring is arranged in coaxial relationship with the hub and radially between the hub and the outside periphery of the fan wheel. The ring has a plurality of defined fixing positions distributed over the periphery thereof for mounting at least one balancing weight.

Description

CROSS-REFERENCES TO RELATED APPLICATIONS [0001] This application claims the priority of German Utility model application Serial No 20 2005 006 043.7 filed Apr. 14, 2005, the subject-matter of which is incorporated herein by reference. FIELD OF THE INVENTION [0002] The invention concerns a fan wheel, for example for cooling an electric motor and parts thereof and dissipating waste heat produced thereby. BACKGROUND OF THE INVENTION [0003] A typical form of fan wheel which can be frequently used for example for cooling an electric motor and electronic components thereof and dissipating waste heat therefrom may comprise a hub with a plurality of blades extending radially therefrom. A ring is arranged coaxially with respect to the hub and radially between the hub and the outer periphery of the fan wheel. Such a fan wheel can be found for example in EP 0 761 979 A1. In that arrangement the ring disposed coaxially with respect to the hub and arranged radially between the hub and the outer ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F01D5/02F04D29/32F04D29/66
CPCF04D29/662F04D29/326
Inventor VIDAL, ULRICHHERTREITER, MARTIN
Owner EBM PAPST LANDSHUT