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进口降噪风机美国阿卡迪亚品牌

进口降噪风机Product Description:

It includes a fan shell, the fan shell is provided with an air inlet and an air outlet, an impeller is arranged in the fan shell, the rear end of the fan shell is provided with a motor, the impeller is connected with the output shaft of the motor, a collector is arranged in the fan shell, the collector is arranged in front of the impeller, the fan shell is a volute, and the air outlet of the fan shell extends to the side of the volute tongue, The relationship between the radius r of the circular arc at the bottom of the volute tongue of the fan shell and the radius R2 of the impeller is r = 0.07 ~ 0.09r2, the blades on the impeller are arranged along the circumference of the impeller, and the included angle between the blades and the tangents on the impeller consistent with the rotation direction of the impeller α Is greater than or equal to 138 ° and less than or equal to 153 °. The utility model has the advantages of effectively reducing noise, reducing sound pollution and more environmental protection.

进口降噪风机characteristic:

The centrifugal fan converts the mechanical energy of the fan impeller rotation into the pressure energy and kinetic energy of the gas, and sends the gas out. The gas enters along the axial direction of the streamlined air inlet of the fan, generates air energy through the rotation of the impeller, outputs the gas radially along the spiral shell, and then sends it out from the air outlet of the shell. In the fan shell, the gas changes the flow direction to cause deceleration, which converts kinetic energy into pressure energy. In the process of energy conversion, the pressure gas flows rapidly in the fan casing and collides with the inner wall of the fan to produce a lot of noise, especially for high-power fans. In the process of use, excessive noise in the environment will not only threaten the physical and mental health of workers, but also form a kind of sound pollution, affecting the normal life of surrounding residents.

进口降噪风机Principle:

An impeller is arranged in the fan casing, the rear end of the fan casing is provided with a motor, the impeller is connected with the output shaft of the motor, a collector is arranged in the fan casing, the collector is arranged in front of the impeller, the fan casing is a volute, and the air outlet of the fan casing extends to the side of the volute tongue, so that the relationship between the radius r of the arc at the bottom of the volute tongue of the fan casing and the radius R2 of the impeller is r = 0.07 ~ 0.09r2, The blades on the impeller are arranged along the circumference of the impeller, and the included angle between the blades and the tangent line on the impeller that is consistent with the rotation direction of the impeller α Is greater than or equal to 138 ° and less than or equal to 153 °. The gas rotates in the fan casing. As the air outlet expands to the side of the volute tongue, when the air flows through the air outlet, the channel area continues to expand, and the gas flows more smoothly through the air outlet. However, there is a limited relationship between the arc at the bottom of the volute tongue and the radius of the impeller. In this way, the arc at the bottom of the volute tongue is within the appropriate range, so that the arc radius is not too small to cause excessive noise, The radius of the arc is not too large to affect the gas flow at the air outlet. The noise caused by the friction between the gas and the fan shell is smaller, and the noise is smaller; Therefore, the utility model has the advantages of effectively reducing noise, reducing sound pollution and being more environmentally friendly.

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