Capacity control of a compressor

Details Capacity control of a compressor Capacity control of a compressor

F - Mech Eng,Light,Heat,Weapons

04

C

F04C 28/08 (2006.01) F04B 35/04 (2006.01) F04B 49/06 (2006.01)

Patent

CA 2591359

A linear compressor that is operated at a frequency greater than the natural frequency of the spring-mass system of the compressor. Operating the compressor at such a frequency can increase the output of the compressor. In one embodiment, the linear compressor includes a cylinder block having a cylinder bore, a piston positioned within the cylinder bore, first and second springs for positioning the piston where the piston and the first and second springs comprise the spring-mass system, and an armature operably engaged with the piston to drive the piston at a frequency greater than the natural frequency of the spring-mass system. The linear compressor can also include a controller which monitors the instantaneous natural frequency of the spring-mass system and modulates the frequency of the current passing through the armature such that it exceeds the natural frequency of the spring- mass system.

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