Archive for September, 2018

The Innovation of Dorin

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Established in 1918 as a manufacturer of machine tools, broaches and adjustments, air compressors and repairers of motor vehicle engines, Officine Mario Dorin began producing open type compressors for refrigeration systems in 1932. Soon, the latter became the company’s core business.

In 1952, thanks to the large business capacity of the founder Mario Dorin and his mechanical intuition, the company began producing semi-hermetic reciprocating compressors for air conditioning and refrigeration. In 1970, to accommodate an ever-increasing production, the company changed location and moved to the present facility of approximately 20,000 square meters. Today, thanks to the commitment and the know-how of the children and grandchildren of Mario in synergy with all internal and external collaborators, Dorin has consolidated its international reputation and continues to grow, producing about 50,000 piston compressors a year.

Between 1983 and 1998, OMD expanded its offering by adding to its range of compressors, machineries with 6 cylinders (30 to 50 Hp with displacement from 84 to 138 m3/h) and those with 8 cylinders (60 to 75 Hp with displacement from 184 to 200 m3/h).
In 1998, it was added to the extensive range of products, the model 16 pistons with its 150 Hp and displacement up to 400 m3/h, compressor that today, although no longer in production, remains unique in its type, one of the Dorin flagships of the entire history of refrigeration.
The real innovation of Dorin was born in 1999, the year in which new technologies have been developed such as the application of frequency modulation and the use of CO2 as a refrigerant. Since 2004 OMD is the main reference manufacturer of CO2 compressors for trans-critical application, recognized throughout the world in every commercial sector. Soon Dorin became a reference point for the use of CO2 in sub-critical phase too.

During the same period were designed and manufactured compressors Series HI, specially designed for the electronic control of frequency, products which have now been successful in those markets concerned with implementing a strict policy of energy saving. In 2008, the birth of the compressors H4, H5, H6 and H7 have completed the entire Series H.

Established over 90 years ago and managed for more than 50 years by the Dorin family, Dorin is now ready to face the challenges of the third millennium creating technologically perfect, modern and reliable products. For more information, visit

Written by Chris

September 21st, 2018 at 7:37 pm

Posted in Miscellaneous

The Loading and Unloading System Of A Compressor

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Starting and Operating a Compressor Safely

Electronics are clever inventions that have changed how mankind does things by making work easier. Applying this science to operate machines has created a whole new world of mechanics and robotics. Where a simple lever is mechanized through electronic systems, then there arises a complexity in its functionality. It is why a simple carriage pulled by a horse gave the first idea of a steam engine car. Mankind needed a carriage that could pull itself instead of burdening the horse. To operate this car you need the training to understand its basic functionality. Now focus your attention on a lever which is wired to electronics, such as a crane. There is an electric current that enables it to operate, and all of a sudden a simple task of lifting also requires you, a trained personnel to safely operate it. But, what if it is automated and a software is responsible for deciding when to lift and when to drop the load? It means, that no one is required any longer to sit and control it.

The Bock Compressor Software

A compressor is a mechanical device that employs the law of physics, particularly regarding air pressure. Since its invention, there have been a few improvements on how it works, with the most recent one being the use of Carbon Dioxide as a refrigerant. The air is compressed by the high pressure until it is hot and fluid and when it meets the air at room temperature it cools and lowers its temperature. Once this fluid (refrigerant) comes into contact with warm air, it absorbs the heat thereby refrigerating the space/box/room. Once this cycle happens, the gas evaporates back to the compressor. Now, for this to happen, there needs to be an electric current that facilitates the compression and the cycle is automatic. However, for larger compressor systems, there is an issue with electric current, that can damage the compressor. In order for the compressor to load or unload, there is a functioning motor which, when the pressure is very high can absorb up to 8 times the normal electric current. This can be damaging, which is why Mario Dorin has invented a system that does not rush this process during start-up and allows the motor to run or reach its standard acceleration while it regulates the pressure accordingly. You can find out more on the official page here: bock compressor software

Written by Chris

September 12th, 2018 at 5:46 pm

Posted in Miscellaneous