The History of Screw Compressors

Before the the s, the Reciprocating air-compressor was the standard. The most efficient compressor type you can find. But in the sixties, it was not a very reliable and high maintenance demanding machine.This article will briefly discuss the history of screw compressors.

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You could compare with your car from those days, they were not to be compared with your current engine in your new state of art Mercedes-Benz of today! Development, innovation and new materials have made the gasoline and diesel engines super efficient and highly reliable.

A Swedish professor and inventor, Alf Lysholm born , designed the first screw compressor design. He was an inventor working on Steam turbines, gas turbines, jet engines. He had co-operations with Elliott for marine gas turbines, with Siemens, ABB &#; The screw compressor was initially designed to improve the components of the turbines. We see that in essence the history of screw compressors can be traced back to Mr Alf Lysholm.

The screw design for air-compressor was licensed to air-compressor manufacturers and it has formed the basis of many screw compressor organisations such as SRM, Atlas Copco, Howden,&#;

In historic literature(*) is mentioned : A. Lysholm was an extremely elegant designer who went directly to the essentials. He was often a pioneer of ideas that came through long after.

The Screw Air-compressor, Oil flooded, was a more reliable design than the Piston compressor in that time and was a solution to many factory owners to become more efficient with the production process. Less need to stop production because the compressor had a break down. Less production stops results in higher production efficiency.

Oil-flooded screw manufacturers, however had the challenge to meet the high efficiency of the piston compressors. The volumetric efficiency is lower.

As the Air-compressors are sold on Flow and not on efficiency, the Screw compressor had to meet the flow requirements for a nominal power rating. The Screw air-compressor is a volumetric machine and can therefore be sized to a higher air-flow by running faster. The real power consumed will increase proportional.

In order to hide the lower volumetric efficiency, the Service Factor was used of the electrical motor. By using the SF of the motor, the factory owner would not realise that the screw compressor was less efficient as they show similar or higher flows .

In the beginning of the introduction of Screw air-compressors, most factory service technicians, were very reluctant to switch from piston to screw air-compressors. The technicians understood completely how a Piston compressors works and were able to do maintenance themselves.

The benefits for the factory owners were no production stops anymore and for the compressor manufacturers higher revenues as the screw compressor is cheaper to produce and would generate more aftermarket activities on the screws.

Would you have switched to screw compressor?

This article is adapted from Mr Chris Lybaert, a senior advisor and expert in compressed air.

Rotary Screw Air Compressor works by trapping air between two interlocked rotors and decreasing the volume of that stucked air and its moves down to the rotors when the volume of compressed is reduced then used as a powerful tool and for numerous other applications. There are many uses of air compressor in industry wise also.

History of Rotary Screw Air Compressor.

There is a big history of Rotary Screw Air compressors. The Rotary screw air Compressor was before called twin rotary screw compressor and developed in .

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So Why Have They Named Twin Rotary Screw Compressors? 

There are two-element are present in the rotary compressor which is a male and female element. The twin element in the compressor rotated in opposite direction in the Rotary screw air compressor. The Air fills a space between the two rotors squeezing or compressing the air into smaller space.

Reciprocating Air Compressor vs Rotary Screw Air Compressor. 

There are many types of air compressors like reciprocating air compressors and also called piston air compressors. This air compressor&#;s job is to take compressed air in a smaller space and then compress it to a receiver tank. The Reciprocating air compressor is more expensive than another compressor. That&#;s the reason everyone chooses the rotary air compressor. A rotary screw air compressor is worked by compressing the air between two rotors and giving adequate pressure.

Reciprocating Air Compressor Parts.

Air-End

The heart of the air compressor is the air end and it is made of lots of components.

Mainly air end is just one part of an air compressor system and the air is compressed oil will enter the air end through an inlet valve then the oil is subsequently separated from the compressed air. Not only air Air ends many additional Components are needed to make a rotary screw air compressor work.

What Are the Other Common Components?

Air Filter

The Compressed air enters the compressor and that&#;ll affect the longevity of the air compressor system. So always remember about a suited air filter is needed for airflow in an air compressor.

The air filter can be scaled directly to the compressor or mounted and attached to an air input hose. The location of the filter should be considered as cool clean air.

Separator Tank Primary.

The primary separator tank is when compressed air leaves the filter and is mixed with compressor oil. This mixture enters Separator Tank Primary in the first step to separate the oil from the occurred air.

Primary Separator Tank uses automatic separation and centrifugal force to Force the oil molecules together. At this stage, a large amount of oil removed in this stage and the separator tank also acts as an oil reservoir.

Separator Tank Secondary.

The secondary tank Separation filter compresses when the air leaves the primary tank. This is oil-free and the remaining oil mixed with the air when coalescing filter air entered the Separator Tank Secondary. This Filter has a membrane material that collects the remaining oil particles. Then the remaining oil particles extend the oil around into the primary oiling method.

Oil Filter

It must contain an oil filter because it has a closed-loop oiling system. The main job of the oil filter is to gather any loose particles collected from the entry of the air compressor system.

Oil filters may be located in different locations called compressors, mounted rollers, or separator tanks.

So These are the points you want to know about Rotary Screw Air compressors.

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