The refrigeration compressor is the core component of the refrigeration system. It compresses the refrigerant gas to increase its temperature and pressure, and then achieves the refrigeration effect through the processes of condensation, throttling and evaporation. The performance of the refrigeration compressor directly affects the energy efficiency, reliability and service life of the entire refrigeration system. According to structure and working principle, common refrigeration compressors can be classified into the following types.
- The working principle of a piston refrigeration compressor: A piston refrigeration compressor uses a crankshaft connecting rod mechanism to drive the piston to reciprocate in the cylinder, completing the processes of suction, compression and exhaust within the cylinder. When the piston moves downward, the intake valve opens and the refrigerant gas enters the cylinder; when the piston moves upward, the intake valve closes and the gas is compressed. The high-temperature and high-pressure gas after compression enters the condenser through the exhaust valve.
Features
- Wide range of application: it can be used for refrigeration applications in different temperature ranges such as low temperature, ultra-low temperature and high temperature.
- Mature and reliable structure: simple design, mature technology, easy maintenance. High durability: components are more wear-resistant and have a longer service life.
- Higher noise and vibration: Due to the reciprocating motion characteristic, noise and vibration are more obvious during operation.
- Higher maintenance needs: parts such as piston ring and valve plate need to be replaced regularly.
Main applications
Domestic air conditioning, commercial refrigeration and freezing equipment.
Industrial refrigeration, such as food processing, pharmaceutical cold storage, low temperature laboratory.
Cold chain logistics, including refrigerated trucks, refrigerated containers, etc.
- Rotor type refrigeration compressor working principle: rotor type compressor through the rotating rotor in the stator for eccentric rotation, so as to compress the refrigerant. There are two main types of sliding vane and rolling rotor type. Sliding vane compressor using the sliding vane in the rotor groove, the formation of a number of compression chamber, to complete the compression process; rolling rotor type is through the eccentric rotor and stator between the tiny gap gradually compressed gas.
Features
- Small size and light weight, suitable for compact refrigeration equipment.
- Smooth operation, low vibration and low noise.
- Suitable for frequency conversion control, fast response, high efficiency at partial load.
- Suitable for small to medium-sized refrigeration equipment, but can not meet the demand for large refrigeration capacity.
Main applications
Household air conditioning, small commercial air conditioning.
Vehicle air-conditioning systems, such as cars, buses, trains, etc.
Small refrigeration equipment, such as freezers, refrigerators.
- Scroll type refrigeration compressor working principle: scroll compressor using a pair of intermeshing scroll disk (one fixed, one rotating) to compress the gas. The rotating scroll discs make a trajectory movement on the track, so that the refrigerant is gradually compressed from the outside to the center, and finally into the high-pressure exhaust port.
Features
- Compact structure, high energy efficiency ratio.
- Smooth operation and low noise, suitable for high end air conditioning and precision cooling needs.
- Low maintenance costs, less wear and tear due to no valves and few moving parts.
- Suitable for inverter control with excellent part-load performance.
Main Applications
Commercial air conditioning, heat pump systems.
Cold chain transportation such as refrigerated trucks and marine refrigeration.
Domestic air conditioning and central air conditioning systems.
- Screw refrigeration compressor working principle: screw refrigeration compressor mainly rely on a pair of intermeshing rotor (usually a male rotor and a female rotor) rotary movement to realize the compression of refrigerant gas. Its working principle is based on volume change, through the rotation of the rotor, so that the refrigerant in the closed space consisting of the rotor, the body and the end cover undergoes cyclical volume changes, so as to complete the process of inhalation, compression and discharge.
Features
- Suitable for large refrigeration capacity requirements, such as industrial refrigeration.
- Continuous compression, smooth operation and low vibration.
- Low maintenance requirements and long service life.
- Suitable for long-term operation and can be used in all-weather refrigeration systems.
Main Applications
Large central air conditioning, industrial cooling systems.
Food processing cold storage, petrochemical industry.
High and low temperature laboratory, freeze drying equipment.
- Centrifugal refrigeration compressor working principle: the use of high-speed rotation of the impeller to do work on the refrigerant, so as to realize the refrigerant gas pressure and temperature increase equipment. Its working principle is mainly based on the principle of momentum exchange in fluid dynamics, that is, through the high-speed rotation of the impeller on the refrigerant gas into the kinetic energy, so that its pressure and speed increase, and then in the diffuser will be part of the kinetic energy converted into pressure, and ultimately the output of high-pressure, high-temperature refrigerant gas, suitable for large refrigeration capacity applications.
Features
- High efficiency, suitable for large cooling systems.
- Suitable for long-term continuous operation.
- High initial investment and complicated maintenance.
Main Applications
Ultra-large central air conditioning, such as high-rise buildings, airports, data centers.
Chemical industry, petroleum refining and other industrial refrigeration.
- Working principle of magnetic levitation refrigeration compressor: The magnetic levitation bearing system consists of four parts: rotor, sensor, controller and actuator, where the actuator includes two parts: electromagnet and power amplifier. In magnetic levitation refrigeration compressor, the permanent magnet synchronous motor drives the rotor to rotate, while the rotor is suspended inside the stator through the magnetic field, avoiding any physical contact.
Features
Ultra quiet and low energy consumption. Extremely low maintenance costs.
Main Applications
Office buildings, office buildings, data centers, hospitals, laboratories.
Shanghai KUB Refrigeration Equipment Co., Ltd.
| Address : | No. 328 on the 4th plant hengyong Road, Jiading District, Shanghai |
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| Factory Address : | No. 328 on the 4th plant hengyong Road, Jiading District, Shanghai |
| Work Time : | 8:30-17:30(Beijing time) |
| Phone : |
86-021 -63184860-17(Work Time) 86--13916495206(Nonworking time) |
| Fax : | 86-021-53750132 |
| Email : | lucy@shkubao.com |
| Phone : | +86 13588563336 |
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| WhatsApp : | +86 13588563336 |
| Skype : | kub.mick |
| WeChat : | CP9301 |
| Email : | kub02@shkubao.com |
| Phone : | +86 15001938306 |
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| WhatsApp : | +86 15001938306 |
| WeChat : | kub-maomao |
| Email : | kub@shhkubao.cn |