IN-ECO LR 060-H06, Руководство по эксплуатации, Страница: 12 / 40

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5 Description of Vacuum Pump/Compressor
Description of Vacuum Pump/Compressor
IN-ECO spol. s r.o.
5.1 Design and principle
5.2 Operating method
When the impeller turns, the operating liquid is put into motion and accelerated. This forms a liquid ring that also rota-
tes. Due to centrifugal force, this ring is arranged concentrically to the housing and eccentrically to the impeller.
During a complete rotation of the impeller, the following occurs:
> The impeller cells are completely filled with operating liquid at the upper vertex.
> During the first half rotation, the liquid ring lifts off the impeller hub. The space in the cells increases so that the pum-
ped gases/vapors are sucked in through the inlet port.
> The space in the cells is largest at the lower vertex, as these are virtually free of operating liquid.
> During the second half rotation, the liquid ring approaches the hub again. The space
in the cells decreases so that the pumped gases/vapors are compressed and pushed out through the discharge port
Fig. 3:
1
3
2
4
Rotor with fixed blades (1) is rotating in the stator (2), in which is situated eccentrically. Water ring is created from
the service liquid (3) by the centrifugal force. The vacuum is formed and the pressure is changed in the compression
chambers (4) between the blades and water ring. During the operation, the pump has to be supplied by adequate
quantity of service liquid to achieve desired performance. Service liquid is also very useful for cooling of the liquid ring
vacuum pump and for receiving possible contamination of sucked gas.