subject: Car Air Compressor concepts and classifications [print this page] Car Air Compressor concepts and classifications
Car Air Compressor is the core component of air-conditioning system, its function is outside help to maintain the refrigerant in the refrigeration cycle system, inhaled from the evaporator low temperature, low pressure refrigerant vapor, compressing the refrigerant vapor temperature and pressure rise to and refrigerant vapor sent to the condenser, the heat absorption and release process, to achieve heat exchange. Compressor in the refrigeration cycle, compression and pumping play the role of refrigerant, the refrigeration system is the "heart."
According to the different works, Car Air Compressor can be divided into fixed and variable displacement compressor displacement compressor. Fixed displacement compressor displacement is increased as the engine speed in proportion to the increase, it can not automatically according to changes in the demand for cooling power output, and the impact on engine fuel consumption is relatively large. Variable displacement compressor to automatically adjust the temperature according to the set power output.
According to the different ways of working, can generally be divided into reciprocating compressors and rotary, reciprocating compressors have a common crankshaft connecting rod and the axial piston rotary compressor with a common rotary vane and scroll.
Compressor crankshaft connecting rod is the first one on behalf of the compressor, it is applied more widely, manufacturing technology is mature, simple structure, but also for processing materials and low processing requirements, the cost is relatively low. Adaptability, able to adapt to a wide range of pressure and cooling capacity requirements, maintenance of strong, good reliability. But the crankshaft connecting rod compressor also has some obvious shortcomings, such as the inability to achieve high speed, large and heavy machinery is not easy to achieve lightweight. Exhaust is not continuous, easy flow fluctuations, and the greater the vibration at work. Now very few small displacement compressor using this structure, the crankshaft connecting rod compressor now exists only in the bus and truck air conditioning units, but also by large displacement ten-cylinder swashplate compressor replaced trend.
Axial piston compressor can be called Generation 2 compressors, a common rock or swashplate compressor disc. Such has been the Car Air Compressor leading product, accounting for 70% of all the compressor, as the technology progresses, the axial compressor can not only be a small light weight, and maximum speed of up to 10,000 r / min or more. In particular the axial compressor first to realize the stepless variable displacement control, especially by the car manufacturers of all ages.
Compact rotary compressor, high efficiency, high speed as the main features. Among them, the rotary vane compressor is the 3rd generation compressor, its volume and weight can be very small, easy-to-be in the narrow layout of the engine compartment, coupled with the volume of noise and vibration, and high efficiency in the automotive air conditioning system has also been a certain application. But the rotary vane compressor for high precision machining, manufacturing costs are higher.
Scroll compressor can be called the 4th generation of the compressor. Scroll compressor, compared with the traditional compressor, displacement situations in the equivalent section of material, energy saving is very high. Because of its small size, light weight, low noise, no valves, spare parts, long life, high volume efficiency, good performance and low power consumption, it can power down 10%, 40% reduction in volume, weight down 15%. Also is highly resistant to fluid strike, the oil strike, cooling speed, starting torque, low noise, high reliability and a number of advantages. Refrigeration industry in general that the scroll compressor is the best Car Air Compressor. http://wzsancn.51orders.com/NewsShow-33/Car-Air-Compressor-032902.html
