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Volute, fan and range hood

A technology of volute and outer casing, which is applied in the fields of volute, fan and range hood, which can solve problems such as noise and achieve the effect of improving the noise environment and reducing transmission

Active Publication Date: 2021-11-02
QINGDAO HAIER SMART TECH R & D CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a volute, a fan and a range hood, aiming to solve the noise problem when the existing driving devices such as fans or water turbines are used in conjunction with the volute

Method used

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  • Volute, fan and range hood
  • Volute, fan and range hood
  • Volute, fan and range hood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment ( 1

[0040] figure 2 It is an exploded view of the volute of the present invention shown according to an exemplary embodiment; image 3 It is a schematic diagram of the internal structure of the noise reducer of the present invention shown according to an exemplary embodiment.

[0041] Such as figure 2 and image 3As shown, the present invention provides a volute 1. The volute 1 includes an outer shell and one or more noise reducers 2. Here, the outer shell is the aforementioned outer shell wall 11 and two side shell walls 12. A volute cylindrical structure, the interior of which is defined along a set curve with an air delivery duct; one or more noise reducers 2 are arranged in the air delivery duct to reduce the noise of the airflow flowing through the air delivery duct .

[0042] In one embodiment of the present invention, the radial cross-sectional shape of the outer casing is a spiral shape. Here, the radial direction refers to the radial direction of the hollow circular...

Embodiment ( 2

[0072] Figure 5 It is an exploded view of the volute of the present invention shown according to an exemplary embodiment; Figure 6 It is a schematic diagram of the internal structure of the noise reducer of the present invention shown according to an exemplary embodiment; Figure 7 yes Figure 6 Partial enlarged view of part B of .

[0073] Such as Figure 5 to Figure 7 As shown, the present invention provides yet another volute 1. The volute 1 includes an outer casing and one or more noise reducers 2. Here, the outer casing is surrounded by the aforementioned outer casing wall 11 and two side casing walls 12. Form a volute cylindrical structure, the inside of which is defined along the set curve with an air duct; one or more noise reducers 2 are arranged in the air duct to reduce the airflow passing through the air duct. noise.

[0074] In one embodiment of the present invention, the radial cross-sectional shape of the outer casing is a spiral shape. Here, the radial d...

Embodiment ( 3

[0100] In the embodiment (three), the present invention also provides a volute 1, the volute 1 includes an outer casing and a plurality of noise reducers 2, the structure of the outer casing can refer to the aforementioned embodiment (one) and embodiment (2), multiple noise reducers 2 include at least one noise reducer 2 provided in the foregoing embodiment (one) and at least one noise reducer 2 provided in the foregoing embodiment (two), and multiple noise reducers 2 along The axial direction of the outer casing is sequentially stacked in the air delivery duct.

[0101] In this way, the purpose of reducing the noise of the volute 1 can be achieved by using the two noise reducers 2 respectively disclosed in the above two embodiments, and the number and stacking method of the two noise reducers 2 can be adjusted according to the actual noise reduction needs. .

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Abstract

The invention discloses a volute case, a fan and a range hood, and belongs to the technical field of volute cases. The volute includes: an outer casing, defining an air delivery channel along a set curve; one or more noise reducers, the noise reducer includes a closed and suitable radial section shape of the outer casing, which is arranged in the air delivery channel. The matching inner shell defines a plurality of muffler cavities arranged in sequence along the direction of the set curve and separated from each other. Each muffler cavity has a through hole communicating with the air inlet of the volute. The volute provided by the present invention is provided with one or more noise reducers in its outer shell, and the noise reducer can introduce the air entering through the air inlet of the volute into the noise reducer, and the noise reduction chamber of the noise reducer can reduce the air in the noise reducer. For the noise in the air duct of the outer casing, each sound-absorbing cavity adopts a structural design similar to a "Helmholtz resonator", which can effectively reduce the transmission of noise in the volute, thereby improving the driving device such as fan or water turbine and the volute. Cooperate with the noise environment of the working conditions.

Description

technical field [0001] The invention relates to the technical field of volutes, in particular to a volute, a fan and a range hood. Background technique [0002] The volute is a relatively common drainage device in the machinery industry. It can cooperate with driving devices such as fans or water turbines to realize the transportation of fluids such as water and air. However, the process of fluid delivery is often accompanied by huge noise. For example, for a centrifugal fan, problems such as rotation noise and eddy current noise will mainly be generated during its operation. The discrete noise is caused by the asymmetric structure around the blade of the impeller and the rotation of the blade. The noise generated by the interaction of the formed circumferential uneven flow field, the vortex noise is mainly due to the turbulent boundary layer generated when the air flow passes through the blade and the vortex and vortex split off, which causes the vortex noise caused by the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/42F04D29/66
CPCF04D29/4226F04D29/665
Inventor 闫茂松范强项红荧赵海霞
Owner QINGDAO HAIER SMART TECH R & D CO LTD