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Address: No.5 Chang Kang Road, Mashan Advanced Manufacturing Park, Binhu District, Wuxi City, Jiangsu Province
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Contact: He Liang
Refrigeration machine screw rotor
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Product Description
The screw rotor of a refrigeration machine, as the core component of a screw refrigeration machine, is usually composed of a pair of interlocking male and female rotors (also known as primary and secondary rotors or concave convex rotors). These two rotors are arranged in a spiral shape in the cylinder and have several concave teeth, which are driven to rotate by an electric motor or other power source. During the rotation process, the gap between the rotors and the gap between the casing and the rotor are precisely controlled to ensure an efficient compression process.
When the rotor rotates, its groove will pass through the suction port, and the groove will be filled with gas. As the rotor continues to rotate, the groove is closed by the casing wall, forming a compression chamber. After the rotor groove is closed, lubricating oil will be sprayed into this compression chamber to provide sealing, cooling, and lubrication. As the rotor rotates further, the oil and gas mixture (mixture of lubricant and gas) inside the compression chamber is compressed, and its volume gradually decreases. When the compression chamber passes through the exhaust port, the oil and gas mixture is discharged from the compressor, completing a complete process of suction, compression, and exhaust.
The length and diameter of the screw rotor are key factors determining the displacement (flow rate) and discharge pressure of the compressor. The longer the rotor, the higher the exhaust pressure; The larger the rotor diameter, the greater the flow rate. In addition, the design of screw rotors also focuses on reducing direct metal contact to improve efficiency and extend service life. For example, the female rotor can be driven by the oil film formed by the injection of oil from the main rotor, or by the synchronous gear between the main rotor end and the concave rotor end.
Overall, the screw rotor of refrigeration machines plays a crucial role in refrigeration equipment due to its high efficiency, stability, and low noise. They not only improve the efficiency and service life of compressors, but also reduce energy consumption and operating costs, making them an indispensable and important component in the refrigeration industry.
The advantages of screw rotors in refrigeration machines are mainly reflected in the following aspects:
Efficient Capacity Utilization:
The screw type chiller unit sucks in and compresses gas through the meshing of two spiral rotors, which gives the unit the characteristics of high speed and high compression ratio. At the same time, the pulse of exhaust pressure is small, ensuring efficient volume utilization.
The absence of clearance volume and suction/exhaust valve plates in the cylinder further enhances volumetric efficiency.
High cooling capacity and flexibility:
The single unit cooling capacity of screw chillers is relatively large, making them suitable for large-scale refrigeration systems.
By adjusting the slide valve, it is convenient to achieve stepless adjustment of cooling capacity to meet different cooling needs.
Structural simplification and stability:
Compared to piston chillers, screw chillers have a more streamlined structure with fewer moving parts, eliminating the inertia force of reciprocating motion.
The high-speed characteristic makes the operation smoother, with less vibration, reducing the need for large maintenance space, and making installation, debugging, and operation adjustment more convenient.
Durability and reliability:
The number of vulnerable parts in screw chillers has been significantly reduced to only one tenth of that of piston chillers, making operation more reliable and easy to maintain.
Not sensitive to wet stroke, allowing a small amount of liquid droplets to enter the cylinder without the risk of liquid impact.
Energy conservation and environmental protection:
The screw compressor works continuously through the interlocking screw rotor, with a high compression ratio and strong adaptability to working conditions, which can effectively reduce energy consumption.
Partial load efficiency is high and can maintain efficient operation over a wide range of loads.
With the increasing awareness of environmental protection, some manufacturers have started using R134a and other environmentally friendly refrigerants to meet environmental requirements.
Wide adaptability:
Screw chillers are particularly suitable for large and medium-sized air conditioning refrigeration systems, such as high-rise buildings, hotels, restaurants, hospitals, research institutes, and other places.
Screw compressors can also flexibly adapt to various refrigerants, whether they are halogenated hydrocarbons or ammonia refrigerants, by simply replacing some of the component materials.
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Telephone:0510-85997271
Mobile:150 2119 1772(Same as WeChat)
Mailbox:jerryhe@woyo.cn
Contact person: manager he
Address: No.5 Chang Kang Road, Mashan Advanced Manufacturing Park, Binhu District, Wuxi City, Jiangsu Province
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