Two capillary vapor compression cycle device

A method of modulating the working fluid flowrate of a vapor compression cycle device which comprises compressing a working fluid in a compressor, circulating the working fluid vapor to a condenser, circulating a portion of the working fluid from the condenser to a first capillary connecting the lowest point or termination of the condenser output tube to an evaporator, circulating a portion of the working fluid from the condenser to a second capillary connecting a region slightly higher or upstream from said first capillary inlet to said evaporator or associated inlet tube of said compressor, circulating the working fluid from said capillaries to said evaporator or said evaporator and compressor inlet tube, evaporating the working fluid in said evaporator, circulating the working fluid from the evaporator to said compressor so that the flow rate of the working fluid from said condenser to and through said evaporator is dependent on the level of liquid working fluid accumulated at the output of said condenser.

A vapor compression cycle device comprising a closed working fluid circuit, working fluid in the circuit, said closed circuit comprising a compressor, a condenser, a first expansion device having an inlet at the termination or lower most portion of the outlet from said condenser, an evaporator connected to the outlet of said first expansion device, and the outlet of said evaporator connected to said compressor and a second expansion device having an inlet positioned upstream from said inlet of said first expansion device connected to the outlet of said condenser, and an outlet connected between the inlet of said evaporator and said compressor.