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Blowing fan

A blower fan and fan blade technology, applied in the field of blower fans that reduce turbulence and increase the overall air intake and output volume, can solve the problems of reducing the overall air output, increasing the overall noise of the blower fan, and affecting the air intake of the blower fan. Achieve the effect of reducing wind shear noise and increasing air intake

Inactive Publication Date: 2010-09-01
SUNONWEALTH ELECTRIC MACHINE IND
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] The top edge of the fan blade 93 and the ring plate 923 are respectively formed parallel to the top and the bottom of the housing seat 7, wherein an air gap (W) is left between the top edge of the fan blade 93 and the top of the housing seat 7 ), so as to avoid friction and collision between the fan wheel 9 and the shell seat 7 when it rotates; At this time, the internal gas pressure of the shell seat 7 often forces the gas to pass through the air gap (W) to form a reverse overflow towards the air inlet 72, which hinders the flow of external air into the air inlet 72, and then affects the overall performance of the existing blower fan. At the same time, the reverse overflow gas is also likely to interfere with the gas that wants to enter the shell seat 7 to form a turbulence phenomenon, so it is easy to increase the overall noise of the existing blower fan and reduce its overall output. air volume

Method used

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Embodiment Construction

[0029] In order to make the above-mentioned and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments of the present invention are specifically cited below, together with the accompanying drawings, as follows:

[0030] Please refer to figure 2 As shown, the blower fan according to the first embodiment of the present invention includes a casing 1 , a stator 2 and a fan wheel 3 . in:

[0031] The housing base 1 has an accommodating space 10, the stator 2 and the fan wheel 3 are both arranged in the accommodating space 10; the accommodating space 10 is provided with a shaft tube 11, and the stator 2 is combined with the shaft tube 11 The outer peripheral surface, and the fan wheel 3 is rotatably arranged in the shaft tube 11 through a bearing 110; the housing base 1 is also provided with a cover plate 12 and an air outlet 13, and the cover plate 12 is assembled on the housing base 1 and the cover plate 12 is provided wit...

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Abstract

The invention relates to a blowing fan which comprises a shell seat, a stator and an impeller, wherein the shell seat is provided with a containing space, the stator and the impeller are arranged in the containing space, the shell seat is additionally provided with an air inlet and an air outlet which are communicated with the containing space, the impeller is provided with a hub and a plurality of fan blades, the fan blades are connected with the hub, one end of the top edge of each fan blade is an air inlet end which is arranged near the air inlet of the shell seat, an air gap is arranged between the top edge of each fan blade and the top of the shell seat, the air inlet end of the top edge has the shortest distance with the top of the shell seat, and the width of the air gap ranges from 0.3 mm to 2.0 mm, thereby reducing generation of disturbed flows and noise.

Description

technical field [0001] The invention relates to a blower fan, in particular to a blower fan that reduces turbulent flow and improves the overall air intake and output volume. Background technique [0002] For existing blower fans, please refer to figure 1 As shown, it includes a shell base 7, a stator 8 and a fan wheel 9. The shell base 7 is provided with a shaft tube 71, an air inlet 72, and an air outlet 73. The shaft tube 71 is arranged at the bottom of the housing base 7. The stator 8 is combined with the outer peripheral surface of the shaft tube 71. The fan wheel 9 A mandrel 91 is rotatably combined with the inner peripheral surface of the shaft tube 71 through a bearing; the air inlet 72 and the air outlet 73 are respectively opened on the top and side wall of the shell seat 7; the fan wheel 9 has a The hub 92 and several fan blades 93, the hub 92 has a top cover part 921, a ring wall part 922 and a ring plate 923, the mandrel 91 is located at the axial center of th...

Claims

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Application Information

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IPC IPC(8): F04D17/08F04D29/42
Inventor 洪银树
Owner SUNONWEALTH ELECTRIC MACHINE IND
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