The working principle of the opener volute

       The volute of the centrifugal fan of the opener is generally composed of two side plates and a volute shell plate, the suction port of the side plate and the wind tongue on the shell plate. The function of the opener volute is to guide the air to the impeller through the suction port, and to collect the air sent from the impeller in the casing, and at the same time convert a part of the dynamic response into static pressure, and guide the air to the air outlet along the volute. The principle of action of the volute is described as follows:

      The side shape of the opener volute is generally spiral. After the air comes out and enters the volute, energy is no longer obtained, and therefore the air moves in the volute by the vortex. It can be known from fluid mechanics that when an ideal fluid moves in a free vortex, its moment of momentum does not change

It can be known from the principle of fluid continuity that when the fluid flows steadily in the pipeline, the mass of the fluid flowing through any section within a unit time is a constant.