Refrigeration compressors are responsible for compressing and circulating the refrigerant, facilitating the extraction of heat and cooling the surrounding space. They play a decisive role in the performance and efficiency of the refrigeration system. To better understand What is a refrigeration compressor? and how the compressor works, let's Tan Long Continue reading the article below.

Find out what a refrigeration compressor is?
Refrigeration compressor is an important part of cooling system. It does the job of compressing the refrigerant from low pressure - low temperature to high pressure - high temperature, and at the same time pushes the refrigerant into the evaporator. The refrigeration compressor can be considered the "heart" of the system, because it ensures the stable operation of the refrigeration process. Therefore, owning a quality and reliable refrigeration compressor is very important for businesses operating in the refrigeration industry.
What is the operating mechanism of a refrigeration compressor?
If you want to understand more about What is a refrigeration compressor? then you need to know clearly the structure and operating principle of this part:
Structure
Refrigerant gas compressor consists of many different components such as crankshaft, cylinder, suction clamp, silencer, crankshaft, discharge clamp, stator, piston, suction chamber, connecting rod, etc.

Operating principle
The machine operates through two parallel processes:
- Suction process: When the piston moves from left dead center to right dead center, the volume in the cylinder increases and the pressure decreases. When the pressure in the cylinder is lower than the pressure in the suction chamber, the suction valve opens and the refrigerant vapor is pumped into the cylinder. The suction process ends when the piston reaches right dead center.
- Compression process: Conversely, the piston moves from right dead center to left dead center, reducing the volume in the cylinder and increasing the pressure. When the pressure in the cylinder is greater than the pressure in the compression chamber, the pusher opens and the refrigerant enters the condenser.
What is the role of the refrigeration compressor?
The compressor is the “heart” of the industrial water cooling system because all activities start from there. In the refrigeration system, the compressor has two particularly important functions.
- Compresses gas from gaseous state to liquid state, helping the gas in the system achieve the required coldness.
- Ensures continuous circulation of air in the pipeline from the evaporator to the condenser and vice versa.
Classification of refrigeration compressors available on the market
Currently, there are many types of refrigeration compressors on the market classified according to different criteria. However, we can classify air compressors into 5 main types:

Piston compressor
Using piston and cylinder in compressing refrigerant. This can be considered as the most popular type of compressor with low initial cost, easy installation and large output capacity. However, this machine has high maintenance cost, low efficiency and causes noise.
Rotary compressor
This type of machine mainly uses two gears to compress the refrigerant. The process of sucking and compressing the refrigerant is carried out simultaneously. The advantages of this type are low cost, low maintenance cost and suitable for dusty environments. However, this machine has a limit on the refrigerant flow.
Screw compressor
The compression mechanism of this machine is based on the use of a pair of spiral rotors to compress the refrigerant. This machine runs smoothly, has low investment costs but has difficulty operating at high speeds or in polluted environments.
Scroll compressor
Use two spiral disks to compress the refrigerant for the compressor. This machine operates smoothly, makes little noise and has the highest efficiency. However, repairing this machine is difficult.
Centrifugal compressor
Centrifugal compressors use centrifugal force from the impeller to compress the refrigerant. This machine has a simple design, high capacity and is suitable for compressing refrigerant with large flow. However, this machine is large in size and has high investment cost.

What is the application of refrigeration compressor?
In the manufacturing sector, refrigeration system applications are diverse, including freeze drying, cold storage, hot water heat pumps, refrigerated transport, ice and chilled water production, and many other applications.
In freeze drying and cold storage, it is used to preserve food, pharmaceuticals, vaccines, and plant seeds. In central hot water production systems, heat pumps are used for heating, bathing, and washing. It can be said that refrigeration compressors play an indispensable role in many industries and daily life.
Refrigeration compressor maintenance
Some questions and answers below will help you better understand refrigeration compressor maintenance:
Why is it necessary to maintain the compressor regularly?
To make the most of the machine, businesses need to learn how to use it properly and carry out regular maintenance measures. Maintaining the refrigeration compressor not only helps the machine operate stably and prolong its life, but also helps to easily detect and fix technical problems, thereby minimizing repair costs and the risk of problems.

When is maintenance needed?
Refrigeration compressor maintenance involves many different steps, with different levels of complexity and frequency of implementation. Therefore, you can divide the maintenance into stages, which can be daily, weekly, monthly, quarterly or annually depending on the specific requirements of each stage.
Professional compressor maintenance process
Daily maintenance:
- Monitor noise when machine is operating.
- Make sure the drain valve at the bottom of the tank is drained every 4-8 hours of operation.
Weekly maintenance:
- Clean air filters, radiator hoses, exhaust valves and external components to avoid blockage.
Monthly maintenance:
- Check the air compressor system for leaks and change oil if necessary.
- Adjust belt tension monthly.
Quarterly maintenance:
- Change oil regularly as recommended by the manufacturer.
- Check and clean the engine heads, valves and carbon deposits at locations.
- Check and tighten bolts and joints.
Annual maintenance:
- Check the entire refrigeration compressor, including the oil separator, motor, air filter, bearings and automatic shutdown mode of the machine.
What is the secret to prolonging the life of a refrigeration compressor?
As mentioned above, buying a good machine is just the first step. More importantly, during use, users need to follow certain principles to avoid unwanted technical errors and prolong the life of the machine.

Here are some notes:
- Avoid placing the device in a place with strong radiation sources, follow the manufacturer's recommendations.
- Use a separate power source for the refrigeration system to avoid overloading.
- Select the appropriate oil type as recommended by the manufacturer for replacement.
- The system operator must always be alert to detect unusual sounds from the machine.
- Regularly check the machine specifications and make sure the suction line is not frozen.
- Keep regular operating logs to monitor machine performance.
Before starting the machine, carefully and fully check all related factors such as water source and power source.
Prestigious and quality refrigeration compressor purchasing unit – Tan Long
In today's market, there are many units providing refrigeration compressors with competitive prices. However, customers need to be careful to choose the right type of machine with good quality.
At Tan Long, we provide refrigeration compressors with excellent quality and low technical problems. We are also committed to supporting customers in maintenance, periodic maintenance and meeting other requirements.

Contact us now for advice and quotes on quality industrial refrigeration compressors at reasonable prices!
Hope the above information has helped you better understand What is a refrigeration compressor? and how the compressor works for businesses. Tan Long Refrigeration's professional team specializes in supplying and installing compressors for cold storage Genuine, guaranteed best quality. Please contact us for advice and support!
Contact information:
- Head office: 86 Dong Den Street, Ward 14, Tan Binh District, Ho Chi Minh City, Vietnam
- Monday – Saturday: 8:00am-5:30pm
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Read more: Detailed instructions for installation, operation and temperature adjustment of cold storage




































