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Ring type checking ventilator

A technology of ventilator and non-return surface, which is applied in the direction of mechanical equipment, non-variable pumps, machines/engines, etc., and can solve the problems that the louvered non-return structure is not suitable for the circular structure, etc.

Inactive Publication Date: 2008-02-20
SUZHOU HUASHENG FAN PLANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of exhausting the exhaust gas, the current ventilator needs to check the discharged gas to ensure that the exhaust gas will not flow back and cause secondary pollution. The louver-type check structure is not suitable for the circular structure, and manual control is required.

Method used

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Examples

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Embodiment Construction

[0007] In specific implementation, the non-return surface can be divided into 3, 4, 6, 8, and 12 groups of non-return blade surfaces, using a double-wing structure, the folding shaft is fixed on the fan, and the back of the non-return surface is reset by a small spring with low spring force. Because ventilation acts on 1 / 3 of the wind force on the non-return blade surface, so as to ensure smooth ventilation.

[0008] During ventilation, the fan blows the gas to the non-return blade surface under the action of the motor and discharges it; when the ventilation ends, the blade surface automatically returns under the action of the spring, forming a non-return structure to prevent the exhaust gas from returning.

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PUM

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Abstract

The invention provides a non-return structure of a ventilator, an electric motor which consists of a coil and a rotor drives the blades fixed or connected with the rotor, the motor is supported and arranged on a case which is earthed or has the denoising function; the non-return bladed are annular in shape and are returned by a spring which has small pressure; in this way, the ventilator can better adapt to the annular ventilation structure and has good non-return effect.

Description

technical field [0001] The invention relates to a ventilator structure, in particular to a non-return structure of the ventilator. Background technique [0002] In the process of exhausting exhaust gas, the current ventilator needs to check the discharged gas to ensure that the exhaust gas will not flow back and cause secondary pollution. The louver-type check structure is not suitable for the circular structure, and manual control is required. Contents of the invention [0003] The invention provides a non-return ventilator capable of automatic control suitable for a circular structure. [0004] For realizing the above object, technical scheme of the present invention is: [0005] A non-return structure of a ventilator, a motor composed of a coil and a rotor drives the blades fixed or connected to the rotor, and is erected on a grounding or noise-reducing shell. Press the spring to return. [0006] In this way, the ventilator is more suitable for a circular ventilation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/44F04D29/54
Inventor 沈国荣
Owner SUZHOU HUASHENG FAN PLANT
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