What Is a Vacuum Blower?
A vacuum blower is a type of vacuum generator. There are three types of vacuum generators: ejectors, vacuum pumps, and vacuum blowers. Each is used for a different purpose. The main applications of vacuum are adsorption by suction pads and degassing by depressurizing the system.
Vacuum pumps and vacuum blowers, on the other hand, are electrically driven and can create a vacuum efficiently. Ejectors can also be used in areas where hazardous materials are used by using air as the driving force.
Uses of Vacuum Blowers
One application of a vacuum blower is to suction with suction pads. This is used to lift a workpiece by adsorbing it when transporting it with a robot or other equipment. Another application is degassing by reducing the pressure in a system. For example, if a material is susceptible to oxidation, removing air (oxygen) from the material prevents oxidation.
Vacuum blowers are used for the adsorption of vented workpieces. Vacuum blowers are also characterized by their ability to generate a large flow rate, which allows a large suction volume to be obtained.
Principle of Vacuum Blowers
Vacuum blowers rotate a built-in blade (impeller) by turning a motor. The rotation of the impeller draws in gas. The gas is drawn into the housing, which accelerates and compresses the gas. This means that mechanical energy is transferred from the impeller to the air. Air is sucked in by the impeller blades, creating a vacuum on the vacuum side.
Vacuum blowers are characterized by their large suction volume. On the other hand, however, the vacuum generated is low. Also, in principle, the more air permeable the workpiece to be vacuumed is, the more efficiently it can be used.
The vacuum blower creates a vacuum to enable suction by the suction pad. When the ambient pressure is higher than the pressure existing between the suction pad and the workpiece, the workpiece is fixed to the pad by the atmospheric pressure. The suction force of the suction pad is directly proportional to the pressure difference between atmospheric pressure and the pressure inside the pad. The pressure inside the suction pad is removed using the power of the vacuum blower.