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Rotor assembly

A technology of rotors and components, applied to pump components, components of pumping devices for elastic fluids, liquid fuel engines, etc., can solve the problem that the medium cannot reach the stator or enter the housing of electronic devices, and achieve improved heat dissipation, Simplified installation and high power density

Pending Publication Date: 2021-06-22
EBM PAPST ST GEORGEN & -
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In some applications of radial fans, there is a basic problem: the rotor needs to be sealed from the stator or the electronics, preventing the media from reaching the stator or entering the electronics housing
However, in this case it is necessary to design the spacer to be open from the rear, so the spacer must be closed and sealed after all installation steps

Method used

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Embodiment Construction

[0032] Refer below Figure 1 to Figure 8 The invention is described in detail, wherein the same reference numerals refer to the same structural and / or functional features.

[0033] figure 2 with image 3 An embodiment of a high speed radial fan 1 with a rotor assembly 10 is shown.

[0034] The rotor assembly 10 includes a support tube 20 that is axially open on the inside. A shaft body 40 is installed in the support tube 20 , wherein the rotor 50 of the shielded motor is installed on the shaft body 40 . An air gap is formed between the rotor 50 and the stator 51 surrounding the rotor 50 , and the separating sleeve with its cylindrical separating sleeve wall 3 a is arranged in this air gap. The outer stator 51 of the electric motor is in turn arranged in a housing 52 . In this embodiment, the rotor 50 has exactly two poles.

[0035] The housing 52 forms a receiving space for the stator 51 and the motor electronics 55 , wherein the housing 52 is sealed against the fan hou...

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PUM

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Abstract

The invention relates to a high-speed radial fan and to a rotor assembly (10) for a high-speed radial fan, the rotor assembly comprising a bearing tube (20) which is axially open in the interior and in which a shaft (40) carrying a fan wheel (30) is mounted with a rotor (50), wherein the rotor (50) of the rotor assembly (10) is mounted in a cylindrical separating can (3).

Description

technical field [0001] The invention relates to a rotor assembly with a fan wheel and a radial fan with such a rotor assembly. Background technique [0002] In some applications of radial fans, there is a basic problem: the rotor needs to be sealed from the stator or the electronics so that the media cannot reach the stator or enter the electronics housing. [0003] There is already a solution for slow-running pumps, which is driven from the outside through the spacer housing by means of a magnetic mating coupling via a magnetic coupling disc. This magnetic counter-coupler is flanged, for example directly or separately, and is driven by an electric motor. [0004] Such a structure comprises many components and requires a large installation space due to the magnetic coupling. A compact unit with a high power density with a separate magnetic coupling cannot therefore be reasonably realized at the high rotational speeds of a radial fan. [0005] The sealing of the electronic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D25/06F04D17/16F04D29/056F04D29/08F04D29/42
CPCF04D25/0606F04D17/16F04D29/0563F04D29/083F04D29/4226F04D29/056F04D29/053F04D29/281F04D29/162F05D2210/12F04D25/062F04D29/0462F04D29/2266
Inventor V·埃勒斯F·沃斯霍恩
Owner EBM PAPST ST GEORGEN & -