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Centrifugal fan

A centrifugal fan and fan technology, which is used in non-variable displacement pumps, non-displacement pumps, and components of pumping devices for elastic fluids, etc., can solve the poor performance of the motor cooling system and cannot ensure optimal fan operation. Operating conditions, etc.

Active Publication Date: 2014-06-25
SPAL AUTOMOTIVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The main obstacle to the adoption of this technical solution is that due to the relatively poor performance of the prior art motor cooling systems, the optimum operating conditions for fan operation cannot be guaranteed

Method used

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Examples

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no. 1 example

[0060] Similar to the first embodiment, the cooling system comprises a collar 28 and radial vanes 29 formed integrally with the impeller 4 and extending axially from the impeller 4 to the motor 3 outside the motor, the radial vanes 29 being supported by the collar 28 and Facing motor 3.

[0061] The collar 28 and the impeller 4 are made in one piece, the collar 28 extending from the support ring 6 on the opposite side of the blade 5 .

[0062] Radial vanes 29 extend between the support ring 6 and the outer ring 28 and from the latter towards the motor 3 .

[0063] The outer ring 28 together with the blades 29 surrounds the motor, in particular the upper part 3b of the motor.

[0064] Said housing 20 is also designed to house a collar 28 and thus a vane 29 .

[0065] The vane set consisting of a plurality of vanes 29 arranged in rotation with the impeller 4 together with the outer ring 28 integral with the impeller contributes to the formation of the above-mentioned tangentia...

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PUM

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Abstract

Described is a centrifugal fan (1) comprising a centrifugal impeller (4) rotatable around an axis of rotation (R); a drive motor (3) of the centrifugal impeller (4); a casing (2) comprising a central portion (17) for housing the motor (3) and the centrifugal impeller (4) and a tangential outlet channel (18) in communication with the central portion (17); the casing (2) has an inlet opening (15) in the central portion (17) and an outlet opening (16) in the tangential outlet channel (18); the fan (1) comprises a system (4,14, 28, 29) for cooling the motor (3) comprising the impeller (4), a ventilation channel (31) operating between the tangential outlet channel (18) and the central portion (17) for generating a flow of cooling air, a collar (28) integral with the centrifugal impeller (4) extending axially from the centrifugal impeller (4) around the motor (3) and a plurality of blades of the motor (3) for generating a tangential cooling component which combines with the flow of cooling air generating as a resultant a helical vortex around the motor (3).

Description

technical field [0001] The present invention relates to a centrifugal fan, and more particularly to a centrifugal fan for a system including an electric motor for cooling the fan. Background technique [0002] Centrifugal fans driven by open DC motors are ubiquitous in the automotive sector (for passenger cars, trucks and similar applications). [0003] These fans can facilitate systems provided with cooling based on forced circulation of cooling air with associated drive motors. [0004] figure 1 A schematic diagram showing a partial cross-section of a prior art centrifugal fan. [0005] This type of fan comprises a scroll-shaped housing 100 formed by a central part 101 and an outlet channel 102 communicating with the central part 101 . [0006] The housing 100 has an inlet opening 103 formed in the central portion 101 and an outlet opening 104 formed at the end of the channel 102 . [0007] An electric motor 105, generally of the "open" type and equipped with ventilati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/58F04D25/08
CPCF04D25/082F04D17/16F04D29/5806F04D29/58
Inventor P·德菲利普斯
Owner SPAL AUTOMOTIVE