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Noise reduction device, noise reduction system and cleaning equipment

A technology for noise reduction devices and cleaning equipment, which is applied to mechanical equipment, parts of pumping devices for elastic fluids, non-variable pumps, etc., and can solve problems such as poor elimination effect

Active Publication Date: 2021-05-18
ENNO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing mufflers are mainly aimed at high-frequency noise, but the effect of eliminating the low- and medium-frequency noise generated by cleaning equipment is not good.

Method used

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  • Noise reduction device, noise reduction system and cleaning equipment
  • Noise reduction device, noise reduction system and cleaning equipment
  • Noise reduction device, noise reduction system and cleaning equipment

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Embodiment Construction

[0062] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection of the present invention. scope.

[0063] Such as figure 1 As shown, the embodiment of the present invention provides a noise reduction device, which may include: a noise reduction cavity 101, at least two air inlets 102, an air duct 103, and at least two perforations 104 disposed on the air duct, in,

[0064] Each of the air inlets 102 is disposed on the first end surface of the muffl...

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Abstract

The present invention provides a noise reduction device, a noise reduction system and cleaning equipment. The noise reduction device includes: a noise reduction cavity, at least two air inlets, an air duct, and at least two perforations arranged on the air duct, wherein each One air inlet is arranged on the first end face of the muffler cavity; at least two air inlets correspond to at least two perforations one by one, and the corresponding air inlets match the perforations; the side wall of each air inlet matches the The matching perforated side walls are integrally formed; the air duct is used to guide the sound waves generated by the external fan so that the sound waves enter the sound-absorbing chamber through the perforations and air inlets; in the sound-absorbing chamber, the sound waves interact with the air in the sound-absorbing chamber , do reciprocating motion, so that the sound energy of the sound wave is converted into heat energy. The solution provided by the invention can effectively eliminate middle and low frequency noises.

Description

technical field [0001] The invention relates to the technical field of noise reduction equipment, in particular to a noise reduction device, a noise reduction system and cleaning equipment. Background technique [0002] With the popularization of cleaning equipment such as vacuum cleaners and sweeping robots, the noise generated when cleaning equipment is working often affects people's life and work. Moreover, the noise generated when cleaning equipment is working has become one of the problems affecting the development of cleaning equipment. Therefore, eliminating the working noise of cleaning equipment has become one of the problems to be solved urgently. [0003] The muffler is a device that allows airflow to pass through, but can prevent or weaken the propagation of sound waves, and is one of the main measures to reduce noise. The existing mufflers are mainly aimed at high-frequency noises, but the elimination effect is not good for the low- and medium-frequency noises...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/66
CPCF04D29/664F04D29/665
Inventor 杨东袁源潘米样张根源刘天文
Owner ENNO TECH CO LTD
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