Is the air compressor a pressure vessel? Why

Between the air compressor and the pressure vessel, in fact, there is a subtle relationship. The air compressor itself is not directly regarded as a pressure vessel. Why is this?

First, let's understand what a pressure vessel is. Pressure vessel, as the name suggests, is a closed container that can withstand a certain pressure. They are typically used to store, transfer or handle fluid media and are designed with specific pressure and volume criteria in mind.

The main function of the air compressor is to compress a large amount of air into a closed space through compression, which increases the pressure and density of the air. In this way, the air can be stored and used more efficiently. Although in this process, the air compressor does withstand a certain pressure, but its core function is not to store or process the fluid medium, but to compress the air.

However, it is interesting to note that some parts of the compressor, such as the oil and gas separator and the gas tank, may fall into the category of pressure vessels because these parts need to withstand internal pressure.

In summary, although the air compressor will generate pressure during operation, it is not directly classified as a pressure vessel. This is because the design and use of air compressors are different from pressure vessels. Of course, some parts of the air compressor may meet the definition of a pressure vessel, depending on the specific design and application. Therefore, we can say that air compressors and pressure vessels are related in some ways, but they are not exactly the same.