When the roots water ring vacuum unit carries out energy conversion, there is always a small part of loss converted into heat. It must continuously dissipate the heat through the motor shell and surrounding medium. This process of heat emission is called cooling. There are four commonly used methods:
1. Internal cooling of the rotor. In order to make the roots water ring vacuum unit work under higher pressure difference, a more effective cooling method can be adopted, that is, the rotor is cooled by circulating oil, and the two ends of the vacuum unit shaft are respectively provided with oil holes and oil diameter shaft heads, which are driven through the inner wall of the rotor and then discharged from the other end.
2. Air cooling. That is to say, the air inhaled by the interstage or two-stage pump is compressed and transmitted through the combined muffler with comprehensive absorption and phase difference.
3. Cool down. The roots water ring vacuum unit generates heat due to the transportation and compression of gas, which must be transmitted from the rotor to the shell.
4. The oil film of the rotor is cooled. The cooling method is to connect an oil pipe at the inlet of roots water ring vacuum unit, and take the heat of the rotor away with the evenly dripping cooling oil.
When the temperature of roots water ring vacuum unit is too high, different cooling methods can be adopted to avoid loss
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