在改进叶轮的同时，需求确保它与进风口之间的恰当距离。通常是要求新产品的宽度≤原叶轮的宽度。
While improving the impeller, it is necessary to ensure the appropriate distance between it and the air inlet. Usually, it is required that the width of the new product be ≤ the width of the original impeller.
改进之后产品的结构应当确保能够顺利完成安装。一般是要求新产品的外径应不得过原叶轮的外径。并且其加工工艺功能较好，要利于各配件的加工成型及叶片与轮盘、轮盖的总装，新叶轮叶片数量少于原叶轮叶片的数目。
The structure of the improved product should ensure smooth installation. It is generally required that the outer diameter of the new product should not exceed the outer diameter of the original impeller. And its processing technology has good functions, which should be conducive to the processing and forming of various accessories, as well as the final assembly of blades, discs, and wheel covers. The number of new impeller blades is less than the number of original impeller blades.
还要同时契合高压离心通风机运行时需求的安全系数。并且叶轮的强度和刚度等应大于原叶轮。配装新产品之后，高压离心通风机的气氛动力功能较好。此外还要注意，应实行具体的分析、核算与理论验证，分析以上各点要求。以确保新设计产品的保险稳定性和气氛动力机能。
It is also necessary to meet the safety factor required for the operation of high-pressure centrifugal fans. And the strength and stiffness of the impeller should be greater than the original impeller. After the installation of new products, the atmosphere power function of the high-pressure centrifugal fan is better. In addition, it should be noted that specific analysis, accounting, and theoretical verification should be carried out to analyze the above requirements. To ensure the insurance stability and atmospheric power function of the newly designed product.
另外还要确保其具有适合的旋向及各叶片与轮盘、轮盖的垂直度后，改进前产品在铆接拼装时需求注意：将其两头的凸耳部分穿入轮盘、轮盖上相应的装配定位孔。盘曲叶片两头的凸耳部分，将4个凸耳分袂与轮盘、轮盖铆接紧密而成。
In addition, it is necessary to ensure that it has a suitable rotation direction and the perpendicularity of each blade with the wheel disc and wheel cover. Before improvement, when riveting and assembling the product, it is necessary to pay attention to threading the lugs at both ends into the corresponding assembly positioning holes on the wheel disc and wheel cover. The lugs on both ends of the curved blade are riveted tightly together with the wheel disc and wheel cover, separating the four lugs.