What is a Vacuum Pump? Blower in 5 Articles?
A vacuum pump is a pump that removes air, gas flow and vapor from a confined space and creates a highly efficient air flow, oily vacuum in that space.
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It works by extracting air and other gas molecules from the vacuum chamber (or from a higher outlet if connected in series). Invented in 1650 by Otto von Guericke.
How Does a Vacuum Pump Work?
It removes air from the closed system by vacuum to reduce the air density in the closed space in a single-stage or double-stage manner, thus creating a vacuum. It evacuates air from the system due to the conversion of the mechanical input energy of a rotating shaft into pneumatic energy.
The internal pressure level in a closed volume is lower than the level of the outer atmosphere. The amount of energy produced depends on the volume of gas or air extracted and the pressure difference generated between the inner and outer atmosphere.
Blower Performance Measures
Performance is measured on the most important factor, which is the pumping speed. Pumping speed refers to the air flow rate at the inlet of a vacuum pump. It is usually measured in volume per unit time.
The pumping speed is different for each pump type and for the gases pumped. Depending on the chemical composition of the gases remaining in the chamber, the average air flow rate of the pump varies.
Another factor indicating the level of performance is the efficiency. That is, the blower pumping speed multiplied by the gas pressure at the inlet. The number of molecules pumped per unit time at a constant temperature is known as the throughput.
Where is Vacuum Pump Used?
Vacuum pumps are used in many industrial applications. Cleaning, sealing, etc. Used in various applications. Cement, pulp and paper, sugar mills, process industries and power plants, chemicals, pharmaceuticals, treatment plants, etc.
It is used in various medical and scientific applications in many industries. In general, it should be preferred in industries that can create a high level of vacuum in a confined space. Some of the industrial uses mentioned below are among the most common examples we encounter.
- CRT tubes in electronic production units,
- Electric bulbs and lamps,
- Semiconductor materials,
- Glass coating
- Automobile industry
- Medical procedures requiring suction
- Analytical instrumentation to analyze solid, gas, surface, liquid and biomaterials
- Semiconductor processing such as ion implantation, dry etching and PVD, ALD, CVD and PECVD deposition
- Electron microscopy
- Medical applications that require suction, such as radiotherapy, radiosurgery and radiopharmaceuticals.
- Ophthalmic coating
- Vacuum coating and engineering are required for decoration, durability and energy savings.
- Mass spectrometers capable of creating ultra-high vacuum levels between the detector and the ion source
- Sewerage systems
- Trash bin compaction
There are different types, different uses and applications in various industries. Basically, there are three types of vacuum pumps, positive displacement pumps, momentum transfer pumps, also known as molecular pumps, and detection vacuum pumps .
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In short, vacuum pumps are mechanical devices used especially in industry to evacuate a gas. In my next blog post, I will explainthe types of vacuum pumps. You can follow our blogs closely by subscribing to our newsletter.