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Air guide cover, engine and power equipment

A technology for wind deflectors and engines, which is applied to the cooling of mechanical equipment, engine components, and engines. It can solve problems such as difficulty in achieving engine heat dissipation effects and ideal noise reduction effects, so as to improve heat dissipation effects, reduce airflow resistance and Effects of energy consumption and reduction of aerodynamic noise

Pending Publication Date: 2018-05-15
SANY AUTOMOBILE MFG CO LTD
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AI Technical Summary

Problems solved by technology

[0004] However, this method requires high manufacturing precision, and ultimately needs to be realized by reducing the fan speed. Under many working conditions, it is difficult to achieve the ideal heat dissipation effect of the engine. In order to improve the heat dissipation effect, it is difficult to achieve the ideal heat dissipation effect when the fan speed is increased. noise reduction effect

Method used

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  • Air guide cover, engine and power equipment
  • Air guide cover, engine and power equipment
  • Air guide cover, engine and power equipment

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Embodiment Construction

[0027] It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0028] On the one hand, if Figure 1-5 As shown, the air guide hood proposed by the present invention includes a casing 10, and also includes a lining plate 30 arranged in the casing 10. The lining plate 30 and the casing 10 form a cavity 11, and the lining plate 30 is provided with perforations. , the cavity 11 communicates with the inner space of the casing 10 through the perforation, that is, a resonance cavity is formed. In the air guide hood, the noise generated when the fan 40 in the air guide hood is running is transmitted to the cavity 11 through the perforation, and the air in the perforation will generate intense vibration and friction, so that the soun...

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Abstract

The invention discloses an air guide cover, an engine and power equipment. The air guide cover comprises a shell and further comprises a liner plate arranged in the shell. A cavity is formed by the liner plate and the shell. A through hole is formed in the liner plate. The cavity communicates with the internal space of the shell through the through hole. Noise generated when a fan of the air guidecover operates is transmitted into the cavity through the through hole, air in the through hole can generate violent vibration and friction to convert sound energy into heat energy, and thus a resonant noise absorption effect is achieved; the uniformity of air flow in the air guide cover can be improved to avoid vortexes, so that airflow resistance and energy consumption during operation of the fan are reduced, the cooling efficiency of a radiator is improved, and air power noise is lowered. Meanwhile, the cavity is filled with sound absorption materials, and the cavity and the sound adsorption materials are combined to form a combined resonant sound absorption structure, so that the sound absorption frequency bandwidth and the sound absorption capacity are improved, and air power noise is further lowered.

Description

technical field [0001] The present invention relates to the technical field of engine air guide hoods, and more particularly, to a wind guide hood, an engine and power equipment. Background technique [0002] Cooling fans and air guides are an important part of the heat dissipation system in power equipment such as construction machinery and vehicles. Their performance is directly related to whether the engine can run normally. The air guide is usually installed between the engine and the radiator. , With the complexity of the layout of the engine compartment, the temperature in the cabin also rises, the fan load continues to increase, and the noise problem becomes prominent. How to reduce the fan noise while ensuring the air volume has become a widely concerned issue in the engine field. [0003] At present, the research on noise reduction measures based on the cooling system mainly focuses on the structure and installation method of the fan blade. The gap between the fan ...

Claims

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Application Information

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IPC IPC(8): F01P5/06F04D29/66
CPCF01P5/06F04D29/664
Inventor 黄志亮邵威邓习树
Owner SANY AUTOMOBILE MFG CO LTD
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