Q Q: 506615608
Screw blower and magnetic levitation blower are the most advanced types of fans in the market, each has its own advantages. As a screw blower manufacturer, Qingyue energy conservation naturally needs to talk about the advantages of screw blower compared with magnetic levitation blower in some application overlapping fields.
The application of medium and small air volume is the main field of intersection competition between screw blower and magnetic suspension blower. Energy saving and low noise are two important selling points of the two products. The advantages of screw blowers should start with their basic principles.
As a positive displacement blower, screw blower relies on the twin-screw rotor and a number of relatively independent cavities formed with the pump cavity; with the rotation process, the continuous periodic volume change process is formed between the cavities from large to small, and the minimum volume is discharged to complete the gas transportation. The process has the characteristics of internal compression and forced air supply. Within the load range, the exhaust pressure can be adjusted adaptively according to the back pressure. The change of pressure will not affect the flow. The air volume can be adjusted by rotating speed.
Magnetic levitation blower is a member of the centrifugal blower family. It uses the high-speed rotating blades of tens of thousands of revolutions per minute to endow the transported gas with kinetic energy, which is converted into pressure energy at the outlet. Compared with screw blower, it can not get rid of a common problem of centrifugal fan, that is, surge. It can also be understood that there must be an unstable low efficiency area, so the selection of centrifugal fan needs to avoid the corresponding working condition area. At the same time, the change of working condition pressure will make the outlet air volume change obviously for the magnetic suspension blower or centrifugal fan. Specifically, the flow of the magnetic levitation blower will decrease with the increase of the outlet resistance.
In contrast, the screw blower has no surge risk of Maglev blower at first, so there is no unfavorable working condition area. Therefore, its overall performance is stable and has strong adaptability to the change of terminal pressure. Under ideal condition, the magnetic levitation blower has good energy consumption and noise index. But in practice, many working conditions often change due to various reasons, such as terminal load changes, climate and temperature changes, etc., which may cause pressure fluctuations, leading to working conditions deviating from the design. Once it deviates from the set working condition, the performance index of magnetic levitation blower will change, and even fall into a vicious circle. In fact, the magnetic levitation blower needs ideal and stable working conditions. Once the ideal working conditions change, the performance of the magnetic levitation blower will be reduced, while the screw blower can maintain stable performance under the changing working conditions.
In addition, in terms of environmental adaptability, the magnetic suspension blower is in the high-speed rotation condition of tens of thousands of revolutions per minute, and the fan blade is relatively fragile, so the requirements for dust, humidity and other environment are very high. Once it exceeds the standard, it is easy to cause damage to the core components, or the dynamic balance imbalance is caused by adhering dust. The screw blower is more simple and stable in structure. In the harsh environment with high dust and humidity, the screw blower has higher fault tolerance and is more reliable than this kind of enterprise.
These are the screw blower compared with the magnetic levitation blower has some performance characteristics of the advantages. Of course, these advantages are in some specific circumstances. Under the premise of conditions, the magnetic suspension blower has a good efficiency performance. For some traditional blowers, both are the products of scientific and technological progress, and both contribute to the current energy conservation and emission reduction. For users, all products need to be selected according to the actual working conditions, so as to achieve high cost-effective use, less input and more output.