![]() ![]() For this very reason, rotary compressors are more competitively priced compared to scroll compressors. Lesser vibration means it can be designed into a compressor of higher capacity.įrom the cost point of view, rotary compressors have leverage because the number of parts is fewer and the working mechanism is simpler compared to scroll compressors. Because scrolls have typically 50% less load than rotary compressors, noise and vibration issues are alleviated. Since compressors generally have a great impact on an air conditioner’s capacity, noise and vibration, a compressor should be selected considering its performance in these three areas.Īs we discussed above, a rotary compressor and a scroll compressor have different compression mechanisms, and the load varies depending on it. The biggest difference between a scroll and a rotary compressor is the mechanical structure.Ī compressor is one of the most important parts of an air conditioner, and it is very important to select a compressor that matches your system’s requirements. ![]() Many residential central heat pump and air conditioning. 1 It is used in air conditioning equipment, as an automobile supercharger (where it is known as a scroll-type supercharger) and as a vacuum pump. It can easily be observed that a rotary and a scroll compressor do not share any components except for a motor. A scroll compressor (also called spiral compressor, scroll pump and scroll vacuum pump) is a device for compressing air or refrigerant. ![]() On the other hand, a rotary compressor consists of a cylinder, an accumulator, a main bearing and a sub-bearing, a crank shaft, a roller, and a vane. The key difference between both compressors is their mechanical structure and design.Ī rotary compressor’s compression chamber is located at the bottom of the compressor, whereas in a scroll compressor, it is located at the top.Ī scroll compressor can further be divided into smaller subcomponents such as a fixed scroll, an orbiting scroll, a motor, bypass valves, a thermal protector, an internal pressure relief valve, a discharge check valve, an overload protector, etc.Ĭomponents such as a thermal protector, internal pressure relief valve, discharge check valve, and overload protector protect the compressor from potential damage. Scroll and rotary compressors are built differently and that is why they operate differently. What are the structural differences between a scroll and a rotary compressor? ![]()
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