Investigation of a Variable Rotary Compressor Using a Vane Control Method

It is well known that the compressor with variable capacities has a higher efficiency than the typical single capacity compressors for the air-conditioner system. Therefore, many compressor makers are trying to develop variable types of capacity-controlling compressors, one of which is a vane locking controlled rotary compressor. This paper investigates the rotary compressor using a vane controlling method to verify a motion of the vane according to a controlling signal, which is triggered by the discharge and suction pressure from a certain location of air control cycle. From this investigation, the vane movements and the pressure of related of it are measured to find out how many times a vane is collided with an opposite object that is roller or cylinder. The results of this test give a solution to minimize the number of collision times, which improves the life reliability and reduces the undesired noise.