The invention relates to an annular
heat pipe type cold accumulation refrigerator. The refrigerator comprises a refrigerator body, a compressor, an
evaporator, a capillary
pipe, a condenser and the like, wherein a cold accumulation chamber is further arranged on the refrigerator body and is filled with phase-change cold accumulation materials in an encapsulated mode, the
evaporator is located in the phase-change cold accumulation materials in the cold accumulation chamber, the condensation sections of one or more annular heat pipes are located in the phase-change cold accumulation materials in the cold accumulation chamber, a part of the
evaporation section of each annular
heat pipe is located in a
cold storage chamber, and the other part of the
evaporation section of each annular
heat pipe is located in a
refrigeration chamber. According to the refrigerator, the temperature of the
refrigeration chamber and the temperature of the
cold storage chamber are kept within the
national standard range, and the annular heat pipes start to operate when the temperature of the
refrigeration chamber and the temperature of the
cold storage chamber are higher than set values and stop operating when the temperature of the refrigeration chamber and the temperature of the cold storage chamber are lower than the set values. Cold energy is stored during the valley
electricity period,
electric energy is not consumed during the peak
electricity period, and stored cold energy is released all through the day. The start-stop frequency of cold releasing of the annular heat pipes is far higher than that of working of the compressor, and then fluctuation of the temperature of the refrigeration chamber and the temperature of the cold storage chamber is controlled accurately.