Difference between Air Compressor and Vacuum Pump


An air compressor is a mechanical means which employ power to squeeze air. The air compressor is the major part of the air initiating device, which transforms the mechanical power of the key factor into the compressed gas power and it is the air force device for generating of pressurized air. The power may be in the form of electrical power, chemical power, or any other kind.

air compressor
The air compressors are basically of four types:

  • Rotary screw compressor: This is one of the common types of displacement compressor. It has the interior cooling arrangement. It does not necessitate much protection. They are greased with oil or run oil-free. They are generally huge, industrial sized machinery. It engenders power through two interior twirls that change in reverse direction. The air acquires locked up among the two contrary twirls, additionally relies up force during the accommodation. In view of the fact that interior cooling arrangement these air compressors are intended for consistent utilization, moreover extent in influence from 5 wattage up to 350 wattage.

  • Reciprocating air compressor: Another well-known kind of displacement compressor is the reciprocating compressor. These are usually discovered at small task places like residential construction proposals and workshops. Contrary the rotary screw compressor, the reciprocating compressor is not intended for persistent use. A reciprocating air compressor has greater shifting sections than a rotary screw compressor; furthermore these sections are greased with oil for smooth move.

    This kind of air compressors operate through a reciprocating within a tube, which zipped and moves the air to increase in the pressure. Reciprocating compressors may come in unique or in several stages modifications, which has had a negative impact on the pressure extent you can accomplish. If you require increased power, the multiple stage compressors are the course of action.

    While individual stage compressors would take the work done for small proposals like wood-working and metal manufacturing, several stage compressors offer the power necessary for extreme structure, like automated collection and preservation. Multiple stage reciprocating compressors could attain up to 30wattage.

  • Axial compressor: Axial air compressors generally do not utilized in project construction however they are rather identified in high-velocity motors on vessels. They are generally high prices as comparative to other kinds of air compressors, and also have a high productivity rate. It could take up to several thousands of wattage which is generally reticent for space research.

  • Centrifugal compressor: The centrifugal air compressors are sluggish and calm for fresh air over a disseminator in manner that accumulates pressure. Since the multiple stages compressing procedure, radial compressors would capable to generate a large quantity of power in a comparatively smaller machine. They demand reduced preservation than the rotary screw or reciprocating air compressors and certain types could generate non petroleum air. They are generally utilized for increased difficult manufacturing locations like petrochemical plants or steelmaking plants, since they may achieve approximately 1000wattage.

What is Vacuum Pump?

The vacuum pump is type of arrangement used to decrease the fluid-pressure, comparison to reduced pressure, and achieved over a suction device which is commonly used to take off excess air and their aspects. It is a device that excerpt gas from the container and decreased the gas pressure called a vacuum pump. Surplus reagents else not necessary spin-off; reduce the boiling temperature etc.

vacuum pump

In various growths of industries, principal apprehension is the extent of movement necessary. These vacuum pumps are categorized into different kind and utilized in different methods by various conditions of vacuum and movement levels. The vacuum pumps has a common feature that helps in removing air, vapours, or gases from a closed object.

The vacuum pumps are generally categorized into four types:

  • Positive displacement: The positive displacement pump collaborate a device that consistently extends a hollow to allow the gaseous for running by means of outside compartment. After the hollow is unlocked in addition to gaseous discharge into the environment. The positive displacement pumps are extremely helpful in establishing little vacuums.

  • Momentum transfer: The momentum transfer pumps are also known by another name called as molecular pumps. They work with high velocity solution for movement of gaseous particles external the chamber before the establishment. These pumps are primarily utilized to accomplish high-vacuum pump and they repeatedly work in combination with diverse pressurizing pumps.

  • Regenerative: The regenerative pumps utilize the pinnacle presentation of the liquid and its building is primarily dependent on the balance of nature of centrifugation. Usually, it contains several vertical fangs assortments through the impeller rushing dust particles inside the persistent vacant channels like multiple stage centrifugal pump. The regenerative pump is also known as side channel pump. These pumps are usually used loading latch within production industries semi-conductive procedure. These types of pumps undergoes from enormous power consumption.

  • Entrapment pump: The entrapment pump is a type of pump perhaps a cryo pump, and it employs low temperature to squeeze gases to a difficult state. A chemical pumps responds with gases for generating a solid remains, else, an ion transport uses hard electrically powered areas to compel the ions in addition to ionize gases into strong base.


The main and the basic difference between the air compressors and the vacuum pumps is their vacuum power. During use, the power of the vacuum pump is assessed by the complete release force, and the smaller the result, the harder the output energy. However, the power of the compressor is assessed by the capability of the compressor to accomplish larger compression conditions in the liquid.

On the other hand the flow velocity of both the air compressor and the vacuum pumps is different. The flow velocity of the vacuum pumps is dependent upon the pressure at the two ends of the pump, and the operational rule of the compressor is to decrease the amount. Commonly, the vacuum pump enables the combined compression and release of the condensed of the compressed liquid. The power consumption of vacuum pump is beneath that of compressor. It also helps in identifying its effectiveness.