Instruments

How to choose a compressor

Construction crews often in their arsenalare electrical or pneumatic compressors. Compressors are used to generate compressed air and in some cases they are indispensable. Today you can see a wide range of equipment. After considering the peculiarities of each species, you know, how to choose the compressor.

It is important to understand that the purpose of the compressorIt does not exist. This is due to the fact that the purposes for which can be used compressor equipment, can vary greatly. But usually, the unit capable of providing a pressure of 6-8 atm is enough.

Quite often when buying a compressor beginnersguided by the volume of the receiver, which is in the range of 24-50 liters, believing that bigger is better. But other characteristics of the equipment is not less important, and often vice versa.

Quite often, the engine with the same unitused in models of receivers with different volumes. In this case, the choice of a larger receiver will result in the fact that you only pay more money and practical benefit will be minimal. Systems with large receiver justified only in cases where periodically throughout the day using compressed air. This makes it possible to create the conditions in which the engine will not turn on, whenever only a small portion of air under high pressure is required. To paint the house there is no need for a large receiver, little will be enough.

Performance as of compressor equipmentplays an important role. To avoid overpayment and have sufficient compressed air must be approximately calculated total intake air tools that can be used simultaneously with the compressor. To achieve this difficult, because each instrument is provided with identification plate, where, among other characteristics specified air flow.

Similarly, the determined performancecompressor. But there is one important detail: imported models have performance characteristics at the input, which is 30 percent higher than figures for the compressor output. As a result, domestic appliances must have a margin of 10-20%, and foreign - at least 35%.

Another important indicator is the ratiovnutrismennyh use. It gives an idea of ​​how much this unit is able to work without interruption. In accordance with national standards coefficient of 0.75 means continuous operation, 0.5 - short-lived, and 0.15 - the short-term. This feature describes the operation of the device, but does not report on air failure, which is out of the receiver until it is completely devastated.

When used fragmentary needspiston equipment. In cases where it is necessary to arrange a continuous cycle, the screw compressor is preferable to choose. However, it should be understood that this equipment is not designed to operate in a discontinuous mode, because their structure implies a constant temperature of the compressor unit.

If we talk about energy supplycompressor, then it is necessary to choose between the three-phase and single-phase electric models. If you need to work on the road, then it is possible to give preference to a system that runs on generated electricity or the internal combustion engine.

Mobile sets consist of a compressor and an electric welder: all this will be enough to provide a small construction site with everything you need.

Depending on the purpose compressors sharefor professional, household and industrial. They have different working pressure, performance and lifespan. For the garage, small workshop or garden model with a capacity output of 350 l / min will suffice. For continuous operation in industrial conditions better to use a professional compressors. Their construction and higher reliability, as well as cost. However, for domestic use just does not make sense to buy them, because they do not work out most of the moto.

Consider the features of the compressor equipment, you can see, how to choose the compressor. Allocate enough time to become familiar with this device, you can choose the best option that will suit your needs and to avoid overpayments.

How to choose a compressor
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