Due to growing need for the Vacuum Pump in industries latest equipment are being developed. Vacuum pump is a part of the appliance that creates vacuum by drawing the air present in a closed space. Vacuum pumps in industries are used in various fields for various purposes and they are one of the important home appliances. Vacuum cleaners work same as that of vacuum pumps. The basic principle is they remove air molecules from a space to create vacuum. For the same function, different technologies are adapted by each category of vacuum pumps.
Understanding vacuum system technology
To generate empty space we require components such as empty space ejectors, displacement pumps and kinetic pumps and they work on different principles. Ejectors work by venturi principle where the pressure is reduced by flowing the fluid through constriction. In the displacement system, air is compressed mechanically and ejected allowing to create high space, kinetic pumps accelerate the air forcefully and directs its flow towards pumping, suction rate is high here and low space creates. This suction effect of the compressed air is generated between nozzles of the system. Depending on single or multi-stage principle ejectors, vane chambers either compressor led the air to suction. The level of free space created depends on the flow rate (pumping speed) and the rate of flow varies with chemical composition of different gases. Pump throughput is other important term in vacuum systems. It refers to pressure of gas multiplied by flow rate and the throughput depends on mass flow rate of system and number of gas molecules on keeping the temperature constant. Due to decrease in pressure of the chamber, mass decreases thus the mass flow and throughput falls even though the flow rate is constant. But the system’s throughput remains constant because sublimation, leakages and evaporation effects.