Which parts of the air compressor belong to the pressure vessel

In air compressor systems, the following components are usually considered as pressure vessels:

air storage tank: The air storage tank is an important pressure vessel in the air compressor system, which is used to store compressed air. It bears the pressure of internal compressed air, so it must have sufficient strength and sealing.

Separators: In air compressor systems, some separators are also designed as pressure vessels, especially those used to separate oil-water mixtures or solid particles. These separators need to withstand the pressure from the upstream compressed air.

Buffer tank: The buffer tank is used to balance the pulsation of the air flow at the outlet of the air compressor and stabilize the system pressure. Because it also needs to withstand the pressure of compressed air, it is also regarded as a pressure vessel.

Coolers: Coolers used in some air compressor systems, especially those involving gas or liquid cooling, may also be designed as pressure vessels because they need to withstand a certain working pressure.

Filter housing: Although the main function of the filter itself is to filter impurities, its housing may also be regarded as part of the pressure vessel in order to accommodate the filtration process and withstand a certain pressure.

It should be noted that not all components in a compressor are considered to be pressure vessels. This classification is based primarily on whether the component is designed to contain or transport a fluid (in this case, compressed air) and is subjected to significant internal pressure during operation.

In addition, specific classifications may vary by region, country, and specific engineering standards and codes. When designing and using these pressure vessels, local safety codes and standards must be strictly observed to ensure the safety and reliability of the equipment.