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A low-noise range hood

A range hood, low-noise technology, applied in the direction of removing oil fume, mechanical equipment, machines/engines, etc., can solve the problem of reducing the effect of noise reduction, and achieve the effect of reducing flow resistance and collision noise.

Active Publication Date: 2018-11-23
重庆潼玮商贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, this exhaust structure uses the principle of the Helmholtz resonance cavity for noise reduction, and the effect is more obvious when the exhaust air volume is large. Once the exhaust air volume is reduced, the noise reduction effect will be significantly reduced.

Method used

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Embodiment Construction

[0021] The standard parts used in the present invention can be purchased from the market, and the special-shaped parts can be customized according to the instructions and the accompanying drawings. The specific connection methods of each part adopt mature bolts, rivets, welding in the prior art , pasting and other conventional means, no longer described in detail here.

[0022] refer to Figure 1-5A specific embodiment of the present invention includes a volute 1, an impeller 2 is arranged inside the volute 1, a first annular air duct 3 is arranged at the bottom of the volute 1, and a second annular air duct is arranged above the first annular air duct 3 4. The first annular air duct 3 and the second annular air duct 4 are connected, the top of the volute 1 is provided with an air outlet 5, and a negative pressure fan 6 is arranged in the air outlet 5, and the air outlet 5 is connected with the second annular air duct 4 Pass, the impeller 2 is fixedly arranged on the telescop...

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Abstract

The invention discloses a low-noise range hood, which comprises a volute, wherein an impeller is arranged inside the volute, a first annular air duct is arranged at the bottom of the volute, and a second annular air duct is arranged above the first annular air duct; a plurality of first partition plates are arranged in the first annular air duct, a spheroidal air bag is movably connected between the two adjacent first partition plates, a plurality of first through holes are evenly formed in the first partition plates, a second partition plate is arranged at the air inlet of the first annular air duct, a plurality of second through holes are evenly formed in the second partition plate, and a first air deflector is obliquely arranged between the second partition plate and the first partition plate adjacent to the second partition plate; a third partition plate is arranged at the air inlet of the second annular air duct, a third through hole is formed in the third partition plate and is communicated with an air inlet end of a cavity, and an air outlet end of the cavity is communicated with the second annular air duct. According to the low-noise range hood, the deficiencies of the prior art can be improved, and the efficient noise reduction at different air volumes can be realized.

Description

technical field [0001] The invention relates to a kitchen appliance, in particular to a range hood with low noise. Background technique [0002] The range hood is one of the necessary equipment in the home kitchen. At present, the range hood mainly includes a smoke collecting hood, an air intake box above the smoke collecting hood, a fan volute inside the air intake box, a multi-wing impeller inside the fan and a motor driving the rotation of the impeller. The fan volute is composed of a front side cover, a rear side cover and an intermediate annular body connecting the two sides. The front and rear side cover are respectively opened with air inlets of the same size, and are equipped with a current collector. The impeller is located in the middle annular body between the front and rear side cover plates, and the motor is fixed on the rear side cover plate. When the range hood is working, the multi-wing fan impeller is driven by the motor, and the front side air intake chan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/44F04D29/28F24C15/20
CPCF04D29/28F04D29/441F24C15/20
Inventor 关亚玲
Owner 重庆潼玮商贸有限公司
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