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Adjustable ventilation fan

An adjustable fan technology, applied in the direction of mechanical equipment, non-variable pumps, machines/engines, etc., can solve the problems of increasing blade quality, waste of manpower and material resources, and increasing blade cost, so as to improve ventilation and prevent insects Entry, practical performance strong effect

Inactive Publication Date: 2014-12-24
孙金福
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The noise generated by the fan during operation often affects the physical and mental health of employees and surrounding residents, and causes certain pollution to the surrounding environment. The shape can reduce the noise of the fan, but the lack of this technology increases the complexity of the blade manufacturing process, and also increases the quality of the blade, which increases the cost of the blade. At the same time, the ventilation volume is small, and the structure of the fan cannot be adjusted according to the wall. cause waste of manpower and material resources

Method used

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Embodiment Construction

[0012] The present invention will now be further described in conjunction with the accompanying drawings and preferred embodiments. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0013] Such as figure 1 and 2 The adjustable ventilation fan shown has a fan housing 1, the inner cavity of the fan housing 1 is provided with a turbine blade 2, the turbine blade 2 is composed of a plurality of blades 3, and the center position of one side of the turbine blade 2 is There are installation holes 4, the back of the fan housing 1 is provided with a grill bracket 5, the front of the fan housing 1 is provided with louvers 6, the design of the shutters 6 increases the aesthetics, and the grill bracket 5 is fixed with a filter screen , prevent insects and small animals from entering, and improve safety. The front edge of t...

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Abstract

The invention relates to an adjustable ventilation fan, which is provided with a fan shell, wherein a turbine fan blade is arranged in an inner cavity of the fan shell, and is formed by a plurality of blades; an installing hole is formed in the central position of one side of the turbine fan blade; a mesh cover support is arranged on the reverse side of the fan shell; a blind window is arranged in front of the fan shell; a filter screen is fixedly arranged on the mesh cover support; the front end edges of the blades are respectively of a irregular profile curve structure; the number of the blades is 10-25. The adjustable ventilation fan is simple in structure and convenient to use; due to the unique blade design, the ventilation quantity is improved, and the noise is reduced; the blind window has a rain isolation function and can prevent rainwater from entering a room; the filter screen can well prevent insects from entering; meanwhile, the production cost is reduced, and the adjustable ventilation fan is safe, attractive and strong in practical performance.

Description

technical field [0001] The invention relates to an adjustable ventilation fan. Background technique [0002] Fans have a long history and are widely used in SF6 switch rooms, transformer rooms, capacitor rooms, basements and other places that require ventilation. The principle of fan noise generation: when the fan is running under certain working conditions, the noise generated mainly includes aerodynamic noise and mechanical noise. Among them, aerodynamic noise is the main noise of the fan, which is divided into rotating noise and eddy current noise. Rotational noise is caused by the rotating blades striking air particles periodically. The noise generated by the fan during operation often affects the physical and mental health of employees and surrounding residents, and causes certain pollution to the surrounding environment. The shape can reduce the noise of the fan, but the lack of this technology increases the complexity of the blade manufacturing process, and also in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/28F04D29/70F04D29/42
Inventor 孙金福
Owner 孙金福
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