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Air filtering device of engine

An engine and air filter technology, which is applied in the field of air filters, can solve the problems of high noise of air filters, achieve the effects of reducing noise pollution, easy installation and use, and low manufacturing cost

Inactive Publication Date: 2015-12-30
CHENGDU ZHENGSHENG ENERGY TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an engine air filter device to solve the problem of excessive noise of the air filter in the prior art and achieve the purpose of significantly reducing noise

Method used

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  • Air filtering device of engine
  • Air filtering device of engine
  • Air filtering device of engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] like figure 1 The shown engine air filter device includes an outer cylinder 4 with two air inlets and several air outlets, a filter element 1 installed behind each air inlet, a filter element fixing device 5, a splitter cap 2 and a vent pipe 3. A resonant cavity 6 is installed inside the outer cylinder 4, and the shell of the resonant cavity 6 is made of a thin metal plate material 7 with circular perforations. The metal sheet material 7 with circular perforations has a circular perforation diameter of 1-3 mm and is randomly distributed. The metal material has high strength, high temperature resistance, long service life, and is not easily damaged, and is preferably galvanized sheet, aluminum sheet or stainless steel sheet. Compared with rectangular or polygonal perforations, circular perforations can increase the flow area and prevent air from being compressed and accumulated in the resonance cavity. During the working process, the air enters from the air inlet, is f...

Embodiment 2

[0020] An engine air filter device, on the basis of Example 1, the inner side of the outer cylinder 4 and the outer side of the air pipe 3 are covered with a layer of the metal sheet material 7 with circular perforations, and the outer cylinder 4 is fixed on the base 8. Utilizing the natural frequency of the metal sheet 7 with circular perforations in the same range as the sound wave frequency of the air filter noise, the metal sheet material resonates, thereby further weakening the sound wave energy in the entire air filter and reducing the direct impact of the penetrating outer cylinder. The sound wave energy transmitted outside the air filter achieves the purpose of reducing noise. The outer cylinder 4 is fixedly placed on the base 8 to reduce shaking of the outer cylinder caused by resonance.

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Abstract

The invention relates to a resonant-cavity-muffled engine noise-reducing air filter. The air filter comprises an outer tube, filter cores, filter core fixing devices, flow diversion caps and ventilating pipes, wherein the outer tube is provided with two air inlets and a plurality of air outlets, and the filter cores are respectively mounted behind all the air inlets; a resonant cavity is mounted inside the outer tube, and a shell body of the resonant cavity is made from a metallic thin-plate material with circular through holes. The air filter can be used for remarkably lowering engine noise pollution and is simple in structure, low in manufacturing cost and convenient to mount and use.

Description

technical field [0001] The invention relates to an air filter, in particular to an engine air filter device. Background technique [0002] The existing engine air filter includes an outer cylinder with two air inlets and several air outlets, a filter element fixedly installed in each air inlet, a shunt cap and a vent pipe corresponding to the filter element. When using the device, the noise generated by the pulsed air flow is very loud; and insufficient combustion often occurs in the engine due to insufficient air. Although the air filter is continuously improved and perfected in the prior art, the purpose of reducing the noise and increasing the air intake volume has not been completely achieved. Contents of the invention [0003] The object of the present invention is to provide an engine air filter device to solve the problem of excessive noise of the air filter in the prior art and achieve the purpose of significantly reducing the noise. [0004] The present inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M35/14
Inventor 王开蓉
Owner CHENGDU ZHENGSHENG ENERGY TECH DEV CO LTD
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