Essential Parts Of Air Compressors

Air compressors are designed and based on either of two mechanisms - a positive-displacement mechanism or negative-displacement mechanism

. Positive-displacement mechanism forces air into a chamber where the volume of the air is reduced to cause its compression. Based on the type of mechanism on which the air compressor is based, the structure, components, design, size, etc. will vary accordingly.

The positive displacement mechanism has one or more moving pistons, which force and pump air into an air chamber through a constant motion of these pistons. These air compressors have unidirectional (i.e. opening up only in one direction) valves, which pull in air into this chamber, where the air gets compressed. A distinct assembly of simple motors or rather rotary screw compressors force and squeeze in air by two matching helical screws that turn and pull in air into this air chamber. The air thus pulled in gets reduces in volume up on the turning of these helical screws. It is as if two screws with threads moving in opposing directions, which are snugly lined up against each other. This causes air to be sucked in, much like the propeller of a jet engine of an aircraft. Another type of air compressors using positive-displacement is the Vane compressing system. Vane compressors feature a slotted rotor with varied blade placement, which channelizes air into a chamber and compresses the volume of the air sucked in.

The negative-displacement mechanism is based on centrifugal compressors, working within an air compressor. A spinning impeller, i.e. a blade on a rotor, generates a powerful centrifugal force by speeding up and then slowing down captured air causing the difference in the air pressure, resulting in the compression. Several products based on this mechanism include common backyard tools such as a leaf blower or even the blowing mechanism of your household vacuum cleaner.

From all the types of appliances or products, based on air compressors, which are available in the market, air conditioners are one of the most common electrical home appliances. In an Air Conditioner, typically an inert gas based cooling agent, which absorbs heat from the air drawn in, is pumped through a fine mesh of pipes. A dedicated compressor, typically an air compressor runs this gas through these cooling fins. Without compressing and forcing this cooling agent, there would be no loss of heat, and thus, there would be no cooling of the room or area. It is the absorption of captured or transferred heat and blowing or releasing it away from the room, which results in a cooler place.

Considering such are the workings within an Air Compressor, the entire assembly has carefully designed, crafted and / or moulded parts, which work together, in coordination with each other. It can also be understood that every air compressor has an air chamber for trapping air drawn in. A relatively large assembly of fins or rotors, fans, blades, one or more pair of helical screws, etc. that are solely responsible for creating a tremendous force which creates a vacuum and also pressurises air into a strong chamber, which is smaller in size by volume compared to the volume of air pulled in.

by: Johnathan

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