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Question:

Why should the safety valve be installed at the Roots blower exit?

Why should the safety valve be installed at the Roots blower exit?

Answer:

So it has a high indenter. In order to ensure safety, especially the Roots blower seal, so in the fan outlet to install a "safety valve."
The Roots blower is "cyclone" structural relationship, the air "out" fan cavity,
Even if the fan outlet is completely blocked (in fact, start the centrifugal fan should be closed the outlet) will not cause damage to the fan.
Centrifugal fan is the rotation of the impeller, the energy transfer to the air, so that the air carrying energy along a certain direction of movement, and ultimately we feel is the movement of the "wind"
Roots blowers and centrifugal fans in the working principle has a fundamental difference

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