High-pressure fan refers to a fan whose wind pressure is 30kPa~200KPa or compression ratio e=1.3~3 under design conditions. In the current industry, gas ring vacuum pumps are generally classified as high-pressure fans. High-pressure blower, also called high-pressure blower, is different from general centrifugal blower. When the impeller rotates, due to the centrifugal force, the wind vane causes the gas to move forward and outward, thereby forming a series of spiral motions. The air between the blades of the impeller rotates spirally and squeezes the gas outside the pump body (inhaled by the suction port) into the side groove. When it enters the side channel, the gas is compressed, and then returns to the blades of the impeller again. Speed up the rotation. When air passes through the impeller and side grooves along a spiral track, each impeller blade increases the degree of compression and acceleration. As the rotation progresses, the kinetic energy of the gas increases, so that the pressure of the gas passing along the side channel further increases. When the air reaches the connection point between the side groove and the discharge flange, the gas is squeezed out of the blade and discharged from the pump body through the outlet muffler.
For the fan, the control of the air volume is very important, neither insufficient nor excessive, otherwise it will affect the performance of the fan. Once we encounter excessive fan air volume, we must improve it in time to avoid adverse consequences. Do you have any good suggestions?
Since the appearance and development of high pressure fans, its performance has been greatly changed and improved, and its application in the industry has also received more attention. Especially the centrifugal fan, which is a machine that uses the input mechanical energy to increase the gas pressure and discharge the gas. Because the gas flow rate is relatively low, the pressure changes little and the air volume is not excessive.
However, the air volume of the newly installed centrifugal fan will be unstable. It is too large or too small during use. At this time, the opening and closing degree of the regulating door should be used to change the speed of the fan to adjust the flow, so as to achieve the control of the air volume of the fan. purpose. In addition, changing the resistance coefficient of the pipe network to adjust the flow rate; changing a higher or lower pressure fan to adjust the flow rate is also an effective way to eliminate the excessive air flow of the fan. You can also try to use it.
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