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grease pump

A range hood and rack technology, applied in the field of kitchen utensils, can solve the problems of increased noise and affecting the performance of fans, etc., and achieve the effects of reducing acoustic impedance, increasing acoustic energy, and improving the effect

Active Publication Date: 2019-05-31
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

[0002] With the improvement of people's requirements for the quality of life, the noise performance of the range hood has become one of the important indicators to measure the overall performance of the range hood. As the core power system of the range hood, the fan system is the source of its vibration noise and aerodynamic noise. On the one hand, increasing the exhaust air volume and suction of the range hood can improve the exhaust efficiency of smoke, on the other hand, it will further increase the noise. While reducing noise, the fan in the related art often affects the fan. work performance, can not do a good balance between the two

Method used

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Embodiment Construction

[0032] 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.

[0033] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in t...

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Abstract

The invention discloses an extractor hood which comprises a machine frame, a fan assembly and a sound absorption device. The machine frame comprises a coaming and a cover plate. An installation cavity is defined by connecting the coaming and the cover plate. The fan assembly is arranged in the installation cavity. The sound absorption device is provided with multiple micro holes. A helmholtz resonance cavity is defined by connecting the sound absorption device with the coaming and / or the cover plate. The area of the micro holes is 18-80 mm<2>. According to the extractor hood in the embodiment of the invention, the helmholtz resonance cavity is defined by arranging the sound absorption device, the area of the micro holes in the sound absorption device is defined to be 18-80 mm<2>, accordingly, acoustic impedance of air and the helmholtz resonance cavity can be reduced, the acoustic energy of acoustic waves entering the helmholtz resonance cavity can be effectively increased, and the effect of reducing noise can be improved.

Description

technical field [0001] The invention relates to the field of kitchen utensils, and more specifically relates to a range hood. Background technique [0002] With the improvement of people's requirements for the quality of life, the noise performance of the range hood has become one of the important indicators to measure the overall performance of the range hood. As the core power system of the range hood, the fan system is the source of its vibration noise and aerodynamic noise. On the one hand, increasing the exhaust air volume and suction of the range hood can improve the exhaust efficiency of smoke, on the other hand, it will further increase the noise. While reducing noise, the fan in the related art often affects the fan. The performance of the work, can not do a good balance between the two. Contents of the invention [0003] This application is made based on the inventor's discovery and understanding of the following facts and problems: It is generally believed in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24C15/20
CPCF24C15/20
Inventor 李春辉闫亮何新奎蒋济武季俊生
Owner WUHU MIDEA SMART KITCHEN APPLIANCE MFG CO LTD
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