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Blast fan impeller harving blade radical length increasing air from side edge to bottom edge

A technology of radial length and blower fan, applied in the components of pumping device for elastic fluid, non-variable-capacity pump, pump device, etc. Wind pressure, blow noise reduction, blow noise reduction effect

Inactive Publication Date: 2008-04-23
SUNONWEALTH ELECTRIC MACHINE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The phenomenon that the airflow turns immediately may cause the blowing noise, which affects the speed efficiency of the blowing cooling fan

Method used

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  • Blast fan impeller harving blade radical length increasing air from side edge to bottom edge
  • Blast fan impeller harving blade radical length increasing air from side edge to bottom edge
  • Blast fan impeller harving blade radical length increasing air from side edge to bottom edge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as image 3 , Figure 4 As shown, the impeller 4 whose radial length of the blowing fan blade of the present invention increases from the air inlet side edge to the bottom edge includes a hub 41 having an outer peripheral surface, at least one support member 42, several blowing fan blades 43 and at least one connecting ring 44 , 45.

[0034] The impeller 4 whose radial length of the fan blade of the blowing fan of the present invention increases from the air inlet side edge to the bottom edge can be combined with a motor (not shown), and forms a complete blowing and cooling fan with the shell base 1 and the cover plate 2 .

[0035] The housing base 1 is provided with a chamber 11 and a side air outlet 12 .

[0036] The cover plate 2 is combined with the shell base 1 and has an air inlet 21 .

[0037] An accommodating space for accommodating a motor is formed inside the hub 41 , and the hub 41 is rotatably combined in the housing chamber 11 of the shell base 1 . ...

Embodiment 2

[0046] Such as Figure 7 , Figure 8 As shown, the impeller 4 whose radial length of the blowing fan blade of the present invention increases from the air inlet side edge to the bottom edge includes a hub 41 with an outer peripheral surface, at least one support member 42, several blowing fan blades and at least one connecting ring 44, 45.

[0047] The impeller 4 whose radial length of the blowing fan blade of the present invention increases from the air inlet side edge to the bottom edge can be combined with a motor (not shown), and forms a complete blowing and cooling fan with the shell seat and cover plate.

[0048] The shell seat is provided with a chamber and a side air outlet.

[0049] The cover plate is combined with the shell base and is provided with an air inlet.

[0050] An accommodating space for accommodating a motor is formed inside the hub 41 , and the hub 41 is rotatably combined in the housing of the housing.

[0051] The supporting member 42 is a corrugat...

Embodiment 3

[0059] Such as Figure 9 , Figure 10 As shown, the impeller 5 whose radial length of the blower fan blade of the present invention increases from the air inlet side edge to the bottom edge includes a hub 51 with an outer peripheral surface, a ring plate-shaped support member 52 and several blower fan blades 53 .

[0060] The impeller 4 whose radial length of the blowing fan blade of the present invention increases from the air inlet side edge to the bottom edge can be combined with a motor (not shown), and forms a complete blowing and cooling fan with the shell seat and cover plate.

[0061] The shell seat is provided with a chamber and a side air outlet.

[0062] The cover plate is combined with the shell base and is provided with an air inlet.

[0063] An accommodating space for accommodating a motor is formed inside the hub 51 , and the outer peripheral surface of the hub 51 is integrally connected with a plurality of blowing fan blades 53 by a ring-shaped support member...

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PUM

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Abstract

The invention is a blade wheel with the radial lengths of fan blades extending from air inlet side edge to bottom edge, providing a cooling fan component for enlarging air inflow, increasing outlet air pressure and reducing blasting noise, and comprising a hub with a peripheral surface, at least a supporter connected to the peripheral surface and several fan blades connected with and supported on the hub by the supporters. There is a holding space formed inside the hub. The fan blade comprises air inlet side edge, bottom edge, and radial inner edge and outer edge corresponding to the hub. The radial lengths of the inner edges of at least partial fan blades change axially to cause the change of their extending from the air inlet side edge to the bottom edge, so as to make the radial length of the air inlet side edge of the fan blade is less than that of the bottom edge.

Description

technical field [0001] The invention belongs to cooling fan components, in particular to an impeller whose radial length of a fan blade increases from the air inlet side edge to the bottom edge. Background technique [0002] Such as figure 1 , figure 2 As shown, the existing blast cooling fan includes a housing base 1 ', a cover plate 2' and an impeller 3. [0003] The housing base 1' is provided with a chamber 11' and a side air outlet 12'. [0004] The cover plate 2' is combined with the housing base 1' and is provided with an air inlet 21'. [0005] The impeller 3 is rotatably arranged in the chamber 11' of the casing 1', and is provided with a hub 31, a support member 32 and several blowing blades 33. [0006] The blower blade 33 is connected to the hub 31 by a support member 32 . [0007] Such as figure 2 As shown, a connecting ring 34 can also be optionally provided on the top of the blower vane 33 to strengthen the structural strength. [0008] During operati...

Claims

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Application Information

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IPC IPC(8): F04D29/30F04D29/66F04D25/08
Inventor 洪银树吕有原方美智
Owner SUNONWEALTH ELECTRIC MACHINE IND