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Volutes, fans and range hoods for range hoods

A range hood and volute technology, applied in the field of kitchen equipment, can solve the problems of noise radiation and noise increase

Active Publication Date: 2021-04-20
FOSHAN SHUNDE MIDEA WASHING APPLIANCES MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this sound-absorbing structure still has reflected noise, and the tapered flow channel forms a downward bell mouth, and the bell mouth faces the suction port of the frame, so that the noise can be diffused outward through the deflector, causing noise increase
Another example is to install sound-absorbing modules with the same cross-sectional area from top to bottom in the rack to form a flow channel with a constant flow area from top to bottom. Although this structure can weaken the noise radiated to a certain extent , but there is no reasonable guidance for the radiation noise, and there is still a part of the noise radiating from the inside of the rack

Method used

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  • Volutes, fans and range hoods for range hoods
  • Volutes, fans and range hoods for range hoods
  • Volutes, fans and range hoods for range hoods

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Embodiment Construction

[0049] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0050] The volute 210 for a range hood according to an embodiment of the first aspect of the present invention will be described below with reference to the accompanying drawings.

[0051] like Figure 1-Figure 5 As shown, according to the volute 210 used for range hoods according to the embodiment of the present invention, the end surface of the volute 210 has an air inlet and the peripheral surface has an air outlet 212, and the volute 210 is provided with a communication inlet and an air outlet 212 the air cavity. The end face of th...

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Abstract

The invention discloses a volute used for a range hood, a blower fan and a range hood. The end surface of the volute has an air inlet and the peripheral surface has an air outlet. The end surface of the volute is provided with a first sound-absorbing assembly arranged around the air inlet, and the first sound-absorbing assembly is provided from the air outlet toward the The direction of the air outlet and the first deceleration surface extending obliquely outward relative to the transverse section of the volute. According to the volute used for the range hood of the present invention, the expansion flow channel with the flow area increasing along the air intake direction can be formed at the front end of the air intake of the air inlet, thereby effectively controlling the flow from the inside of the frame of the range hood to the outside. radiation noise.

Description

technical field [0001] The present invention relates to the technical field of kitchen equipment, in particular, to a volute for a range hood, a fan for a range hood with the volute for a range hood, and a fan for a range hood with the volute for an oil suction Range hood for the fan of the hood. Background technique [0002] The range hood in the related art is more and more developed towards the direction of large air volume, high wind pressure, and low noise (ie mute). Generally, there are two ways to optimize noise in range hoods: active noise reduction and passive noise reduction. Due to factors such as simple structure and low cost, passive noise reduction methods are more and more used. [0003] For example, a sound-absorbing baffle is provided in the frame to form a flow channel that tapers from bottom to top, so as to reflect downwardly the radiated noise from the air outlet of the volute. However, this sound-absorbing structure still has reflected noise, and the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/66F04D29/42F24C15/20
CPCF04D29/42F04D29/664F24C15/20
Inventor 宋祖龙蒋济武
Owner FOSHAN SHUNDE MIDEA WASHING APPLIANCES MFG CO LTD
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