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Volute, fan with same and exhaust hood

A volute and front plate technology, applied in the direction of oil fume removal, machine/engine, mechanical equipment, etc., can solve the problems of uneven flow field distribution of volute, sudden change of flow area, large dynamic noise, etc., to achieve uniform flow, increase Large flow space, the effect of reducing aerodynamic noise

Active Publication Date: 2014-04-09
WUHU MIDEA SMART KITCHEN APPLIANCE MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shape of the traditional volute at the cut corner adopts a helical design, which will cause a sudden change in the flow area inside the volute at the cut corner, making the distribution of the flow field in the volute uneven, resulting in large pressure fluctuations , resulting in a large flow loss and a large aerodynamic noise

Method used

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  • Volute, fan with same and exhaust hood
  • Volute, fan with same and exhaust hood
  • Volute, fan with same and exhaust hood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Refer below Figure 1-Figure 5 A volute 100 according to an embodiment of the first aspect of the present invention is described, and the fan volute 100 is arranged in a range hood.

[0065] like figure 1 As shown, the volute 100 according to the embodiment of the present invention includes: a front plate 1 , a rear plate 2 and a surrounding plate 3 . The front panel 1 and the rear panel 2 can be arranged in parallel in the front-rear direction, and the surrounding panel 3 is connected between the front panel 1 and the rear panel 2, and jointly defines an air duct space for passing the wind. Wherein, there is a volute flange 5 on the top of the front panel 1 , the rear panel 2 and the surrounding panel 3 , through which the fan volute 100 can be fixed in the range hood.

[0066] In an example of the present invention, both sides of the surrounding plate 3 can be respectively connected to the front plate 1 and the rear plate 2 by welding. Of course, the present inven...

Embodiment 2

[0082] like Figure 6-Figure 9 As shown, the same parts of the second embodiment and the first embodiment will not be described in detail here, and only the different parts will be described in detail in this embodiment.

[0083] In this embodiment, an inclined panel 4' is formed on the lower part of the front panel 1', as Image 6 and Figure 7 shown. Preferably, the inclined panel 4' is formed by bending the lower part of the front panel 1' into the volute. In the following description, the inclined panel 4' is formed by bending the lower part of the front plate 1' into the volute as an example for illustration.

[0084] like Figure 8Shown, the projection of the upper edge of the inclined panel 4 ' on the vertical plane parallel to the front plate 1 ' is a straight line AB, that is, the edge of the front plate 1 ' bottom bent in the volute is AB. The projection of the first helicoid section 31' on a vertical plane parallel to the front plate 1' is a first helix. The p...

Embodiment 3

[0093] like Figure 10-Figure 13 As shown, the same parts of the third embodiment and the first embodiment will not be described in detail here, and only the different parts will be described in detail in this embodiment.

[0094] like Figure 10 and Figure 11 As shown, in the third embodiment of the volute of the present invention, the lower parts of the front plate 1 ″ and the rear plate 2 ″ are respectively formed with a first inclined panel 41 ″ and a second inclined panel 42 ″. Preferably, the first inclined panel 41" is formed by bending the lower part of the front plate 1" into the volute, and the second inclined panel 42" is formed by bending the lower part of the rear plate 2" into the volute. In the following description, the first inclined panel 41 ″ and the second inclined panel 42 ″ are formed by bending the lower parts of the front plate 1 ″ and the rear plate 2 ″ into the volute as an example for illustration.

[0095] like Figure 12 As shown, the projecti...

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Abstract

The invention discloses a volute which comprises a front plate, a rear plate and a surrounding plate. The front plate and the rear plate are parallel to each other in the front-back direction, and an inclined face plate which is inclined towards a space between the front plate and the rear plate is formed on the lower portion of one of the front plate and the rear plate at least; the surrounding plate is connected between the front plate and the rear plate and comprises a first helical surface section, a second helical surface section and a curved surface section, the second helical surface section corresponds to the first helical surface section, the curved surface section is connected between the first helical surface section and the second helical surface section, corresponds to the inclined face plates, and is deviated from helical surfaces to be outwardly protruded, and the first helical surface section and the second helical surface section are located on the helical surfaces. The volute has the advantages that the outwardly protruded curved surface section is reasonably arranged on the surrounding plate, so that a flowing space of airflow inside a fan can be enlarged, flow fields in the volute can be uniformly distributed, the air volume and the air pressure of an exhaust hood can be increased, and noise can be effectively lowered. The invention further discloses the fan with the volute and the exhaust hood.

Description

technical field [0001] The invention relates to the field of range hoods, in particular to a volute, a fan with the volute and a range hood. Background technique [0002] At present, range hoods have become one of the essential kitchen equipment for families. Centrifugal fans are widely used in the range hood field due to their advantages of large suction, low noise and compact structure. A centrifugal fan usually consists of a volute, an impeller and a motor. [0003] However, in practical applications, due to the limitation of the internal space of the range hood, it is often necessary to cut corners on the lower part of the volute of the centrifugal fan, so as to accommodate the volute in the range hood. For example, the near-suction hood with the fan below, some European-style hoods, and some near-suction hoods with the fan above, such as Figure 15 As shown, the lower part needs to be chamfered. The shape of the traditional volute at the cut corner adopts a helical d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/42F04D25/06F24C15/20
Inventor 梁之博黎本锋郭军波刘晓燕蒋济武
Owner WUHU MIDEA SMART KITCHEN APPLIANCE MFG CO LTD
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