Centrifugal fan and refrigerator using fan

A centrifugal fan and fan technology, which is applied to the components of the pumping device for elastic fluids, non-variable-capacity pumps, machines/engines, etc., can solve the problem of reducing air output, air speed, and substandard performance of air-cooled refrigerators. , can not meet the noise requirements and other problems, to achieve the effect of ensuring the air output, good air output and noise reduction ability, and simple structure

Inactive Publication Date: 2014-06-11
HISENSE(SHANDONG)REFRIGERATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for air-cooled refrigeration equipment, if the noise of the fan is too large, it will inevitably cause disgust to the user. The fan structure of the conventional structure of the centrifugal fan applied to the air-cooled refrigeration equipment usually cannot meet the noise requirements.
[0004] At present, the actual method of improving fan noise is mainly to reduce the noise by reducing the wind speed, but reducing the fan speed will cause problems such as reducing the air volume and air speed, resulting in poor cooling effect, so that the performance of the air-cooled refrigerator is not up to standard

Method used

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  • Centrifugal fan and refrigerator using fan
  • Centrifugal fan and refrigerator using fan
  • Centrifugal fan and refrigerator using fan

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Experimental program
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Embodiment 1

[0026] Such as Figure 1 to Figure 3 As shown, the centrifugal fan of this embodiment includes a chassis 1, an inner hub 2 and a plurality of blades 3, the inner hub 2 is fixed in the middle of the chassis 1, the position of the fan axis, the blades 3 are distributed around the inner hub 2, and the blades 3 are fixed on on chassis 1.

[0027] For the convenience of the embodiment statement, here we define: the end of the blade 3 close to the inner hub 2 is the inner round end, and the end of the blade 3 away from the inner hub 2 is the outer round end, wherein, the inner round end of the blade 3 is the closest side to the inner hub 2 The outer edge 31 is the inner edge 31 , and the outer edge 32 is the farthest side of the outer circular end of the blade 3 and the inner hub 2 . The upper surface of the blade 3 in the axial direction of the fan is the top surface 33 , and the distance from the top surface 33 of the blade 3 to the chassis 1 is the height H of the blade 3 , that...

Embodiment 2

[0037] This embodiment is a further optimization of Embodiment 1. The centrifugal fan of this embodiment is applied in an air-cooled refrigerator. Considering the installation position and installation structure of the centrifugal fan in the refrigerator, and when the size of the centrifugal fan itself changes, The curved shape of the blade 3 will also change accordingly, which is not conducive to factors such as experimental comparison, so for the radius of the fan itself, that is, the radius of the concentric circle three R3, the distance between the inner edge 31 and the center of the inner hub 2, that is, the concentric circle - R1 , the axial height of the inner edge 31 does not change. In this embodiment, the radius of the centrifugal fan is determined to be 67.5 mm, the radius of the concentric circle R1 is 30 mm, and the axial height of the inner edge 31 is 28 mm.

[0038] When the radius of the centrifugal fan is 67.5 mm, it can be seen from Embodiment 1 that the init...

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Abstract

The invention relates to a centrifugal fan and a refrigerator using the fan. The centrifugal fan comprises a chassis, an inner hub and a plurality of blades, wherein the inner hub is fixedly arranged in the middle of the chassis, the blades are distributed around the inner hub and are fixedly arranged on the chassis, one end, near the inner hub, of each blade is provided with an inner circle end, one end, away from the inner hub, of each blade is provided with an outer circle end, the blades are distributed from the inner circle ends to the outer circle ends, the axial height of the fan is gradually reduced from the top of each blade in the axial direction of the fan to the direction of the chassis, and the distance from the height reduction initial position of each blade in the axial direction of the fan to the axis of the inner hub is equal to 74% to 81% of the radius length of the fan. The centrifugal fan has the advantages that the structure is simple; the axial height of the outer circle end of each blade is reduced, and the pressure on the outer circle end of each blade is reduced, so the noise is reduced; according to the proof by experiments, the effect of the height reduction initial position at the 74% to 81% of the fan radius is better.

Description

technical field [0001] The invention relates to a fan, in particular to a centrifugal fan and a refrigerator using the fan. Background technique [0002] At present, refrigeration equipment (such as refrigerators, freezers, etc.) is a household appliance commonly used in people's daily life. It is widely used to generate a large amount of frost in the box. [0003] Air-cooled refrigeration equipment uses fans to achieve the cooling effect. Generally, axial flow fans or centrifugal fans are used. Centrifugal fans can generate greater wind pressure than axial flow fans. At present, the capacity of refrigerators is increasing and the air ducts are becoming more and more complicated. Under the trend, if the wind pressure generated by the fan is too small, it is not conducive to the air circulation in the refrigerator, so the air-cooled refrigeration equipment usually uses a centrifugal fan to send cold air into the storage space of the box to realize the cooling of the storage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D17/08F04D29/30F04D29/66
Inventor 陈庆涛韩丽丽王书科杨大海田永生
Owner HISENSE(SHANDONG)REFRIGERATOR CO LTD
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