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Mode change design for capacity modulation in reciprocating compressor

Jong-Bong Kim
The Journal of Mechanical Science and Technology, vol. 22, no. 7, pp.1391-1399, 2008

Abstract : Due to environmental issues, the development of low energy consumption products has become one of the main topics in the home appliance industry. The energy consumption of a refrigerator depends on the efficiency of its compressor as well as on the refrigerator cycle design, such as the capacity modulation. This study features the design of a novel capacity modulation reciprocating compressor, i.e., two-step capacity modulation (TCM). In a TCM compressor, capacity modulation is achieved by changing the dead volume in the cylinder. Instead of a concentric sleeve, an eccentric sleeve is used to change the dead volume for the clockwise and counterclockwise rotation of a motor. For stable capacity modulation, a new latching system with a key, a spring, and an eccentric sleeve is introduced, and the mode change reliability is verified by dynamic analysis

Keyword : Capacity modulation; Reciprocating compressor; Energy saving

 
 
 
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