The invention discloses a ternary-cycle quick-cooling
frost-free refrigerator. The refrigerator comprises a box body and a
refrigeration system; an exhaust port of a variable-frequency compressor is connected with a first
refrigerant pipeline, and a press chamber condenser, a condensation prevention
pipe, a left side condenser and a right side condenser are arranged on the first
refrigerant pipeline in series connection mode in the flow direction of
refrigerant; the
refrigeration system comprises a one-inlet-three-outlet
electromagnetic valve, a refrigerating
refrigeration mechanism, a variable-temperature refrigeration mechanism and a freezing refrigeration mechanism, wherein the one-inlet-three-outlet
electromagnetic valve is provided with a
branch control first inlet, a
branch control second outlet and a
branch control third outlet; a refrigerating
capillary inlet, a variable-temperature
capillary inlet and a freezing
capillary inlet are connected with the branch control first outlet, the branch control second outlet and the branch control third outlet respectively; and an outlet of a freezing
evaporator is connected with an air suction port of the variable-frequency compressorthrough a second refrigerant pipeline. The invention further discloses a corresponding
continuous operation method. According to the refrigerator and the method, the taint of
odor between compartmentscan be avoided, opening and stopping control can be independently carried out on any compartment of the refrigerator, the energy waste is avoided, and two different
evaporation temperatures are provided for each compartment, so that quick cooling is realized.