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centrifugal fan

A centrifugal fan and screw technology, applied in mechanical equipment, machines/engines, liquid fuel engines, etc., can solve the problems of small air volume, uneven impeller flow, uncoordinated impeller coordination, etc., to improve performance and improve uneven flow. Effect

Active Publication Date: 2022-03-04
QINGDAO HAIER SMART TECH R & D CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The volute curve of the centrifugal fan commonly used in the market is composed of approximate helix or multiple circular arcs with different diameters. Due to the imperfect design theory and uncoordinated cooperation with the impeller, the flow in each flow channel in the axial direction of the impeller is uneven, and the fan system The wind pressure and air volume are relatively small, which cannot meet people's needs

Method used

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  • centrifugal fan
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Examples

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Embodiment Construction

[0045] figure 1 It is a three-dimensional schematic diagram of a centrifugal fan 100 according to an embodiment of the present invention. figure 2 Yes figure 1 Another perspective view of the centrifugal fan 100 shown. image 3 Yes figure 1 Another three-dimensional schematic diagram of the centrifugal fan 100 shown. Figure 4 Yes figure 1 A schematic diagram of the impeller 300 and the enclosure plate 203 of the centrifugal fan 100 shown. The centrifugal fan 100 according to the embodiment of the present invention includes a volute 200 provided with an air inlet 101 and an air outlet 102 , an impeller 300 provided in the volute 200 , an air inlet ring 500 provided on the air inlet 101 , and a fan for driving the impeller 300 to rotate. Motor 400. The volute 200 includes a front plate 201 , a shroud 203 and a rear plate 202 . The enclosure plate 203 is arranged between the front plate 201 and the rear plate 202, and the profile of the enclosure plate 203 includes an in...

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Abstract

The invention provides a centrifugal fan, comprising: a volute, which has a front plate, a rear plate and a surrounding plate, wherein the profile of the surrounding plate includes an initial straight line segment, a transitional rounded segment, a second a helical segment, a second helical segment, a third helical segment, a fourth helical segment, a fifth helical segment, a sixth helical segment and a terminating straight segment, and the first helical segment, the second helical segment, the The third helical segment, the fourth helical segment, the fifth helical segment, and the sixth helical segment are arranged concentrically; and the impeller is arranged in the volute. The air channel flow field in the volute of the centrifugal fan of the invention is improved, and the performance of the centrifugal fan is improved.

Description

technical field [0001] The invention relates to the technical field of ventilation equipment, in particular to a centrifugal fan. Background technique [0002] At present, the multi-blade centrifugal fan used in the range hood or integrated stove is used to inhale and exhaust. The volute curve of the centrifugal fan commonly used in the market is composed of an approximate helix or multiple arcs of different diameters. Due to the imperfect design theory and the incoordination with the impeller, the impeller axial flow in each flow channel is uneven, and the fan system The wind pressure and air volume are relatively small, which cannot meet the needs of people. SUMMARY OF THE INVENTION [0003] An object of the present invention is to provide a centrifugal fan with an improved air channel flow field in a volute. [0004] A further object of the present invention is to make the flow field of the air duct in the volute good flow without vortex. [0005] In particular, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D25/08F04D29/42
CPCF04D25/08F04D29/4226
Inventor 龚东巧劳春峰邓鹏飞李剑贾晓芸贺立军苑善通代金杰
Owner QINGDAO HAIER SMART TECH R & D CO LTD
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