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Electric fan

A technology for electric fans and electronic control devices, applied in the field of electric fans, can solve problems such as limiting the reliability and performance of electronic control devices, and achieve the effect of improving reliability and performance

Inactive Publication Date: 2011-02-02
利莱森玛发电机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two factors can limit the reliability and performance of electronic control gear
[0005] In addition, the emergence of the electronic control unit to the rear of the motor results in a larger overall axial dimension of the electric fan

Method used

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  • Electric fan
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Experimental program
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Effect test

Embodiment Construction

[0046] figure 1 and figure 2 The electric fan 1 of the first embodiment of the present invention is shown. The electric fan 1 comprises a rotating assembly comprising a hub 3 supporting a plurality of flanges 4 to which blades 5 are fixed.

[0047] The rotary assembly 2 is for example similar to that disclosed in the applicant's application EP 1 571 345 .

[0048] The electric fan 1 comprises a protective cover 7 inside which the rotating assembly 2 rotates about the axis of rotation X. As shown in FIG.

[0049] The protective cover 7 has, for example, a circular radial inner surface, the diameter of which is adapted to the diameter of the rotating assembly 2 . This surface may be defined by a wall comprising a circular cylindrical portion with axis X, forming an air guiding member. The shroud 7 may have holes formed by the radially outward bending of the wall of the shroud 7 to define the suction angle.

[0050] The protective cover 7 may comprise flanges at the front a...

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PUM

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Abstract

The present invention relates to an electric fan (1) comprising a shroud (7), a motor, a rotary assembly (2) comprising at least one blade (5) rotated by the motor in such a way as to create an airflow inside the shroud, an electronic control device (10) for controlling the motor positioned at least partially on the shroud (7), the shroud (7) being made of metal and the electronic control device (10) comprising a radiator (13) to dissipate the heat generated by at least one electronic component of the control device (10), this radiator (13) being fixed to the shroud (7).

Description

technical field [0001] The subject of the invention concerns fans driven by built-in electric motors, also known as electric fans. Background technique [0002] The motor is controlled by an electronic control unit. [0003] In known electric fans, the electronic control unit is arranged to the rear of the motor in line with the motor. [0004] The electronic control unit is exposed to an air flow generated by the rotation of the fan, which may be hot and reach a temperature of 70° C., for example, depending on the application. Similarly, heat from the motor's heating can be transferred to the electronic control unit. These two factors can limit the reliability and performance of electronic controls. [0005] Furthermore, the emergence of the electronic control unit to the rear of the motor results in a larger overall axial dimension of the electric fan. [0006] US 5 615 999 discloses a fan comprising a protective cover to which the control means for the motor are fixed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D19/00F04D29/54F04D29/52F04D25/08
CPCF04D25/082F04D29/545F04D19/002F04D29/526F04D29/5806
Inventor 埃里克·考帕特艾伦·布森菲利普·布拉雄马克西姆·菲奥拉尼
Owner 利莱森玛发电机有限公司