Volute for range hood, fan and range hood
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: 2020-02-21
FOSHAN SHUNDE MIDEA WASHING APPLIANCES MFG CO LTD
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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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[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] Such as 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...
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The invention discloses a volute for a range hood, a fan and the range hood. The end surface of the volute is provided with an air inlet, the circumferential surface of the volute is provided with anair outlet, the volute is internally provided with an air via cavity for communicating the air inlet and the air outlet, the end face of the volute is provided with a first sound absorbing component arranged around the air inlet, and the first sound absorbing component is provided with a first decelerating surface which extends from the air outlet to the position far away from the air outlet and extends outwards in a manner of inclining relative to the transverse cross section of the volute. According to the volute for the range hood, an expansion runner with the circulation area increasing inthe air inlet direction is formed at the air inlet front end of the air inlet, and therefore radiation noise from the interior of a rack of the range hood to the exterior can be effectively controlled.
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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IPC IPC(8): F24C15/20F04D29/42F04D29/66
CPCF04D29/42F04D29/664F24C15/20
Inventor 宋祖龙蒋济武
Owner FOSHAN SHUNDE MIDEA WASHING APPLIANCES MFG CO LTD