Split multi-temperature-area double-refrigeration device

Abstract

The invention provides a split multi-temperature-area double-refrigeration device. The split multi-temperature-area double-refrigeration device comprises a double-refrigeration system, a draught fan, an outdoor unit shell and multiple independent indoor storage cabinets. A first gas-liquid separator and a first heat exchanger in the double-refrigeration system are connected, and the first heat exchanger is connected with a second evaporator. The first gas-liquid separator is connected with a first evaporator, and the first evaporator is connected with the first heat exchanger. A second condenser is connected with a second gas-liquid separator. The second gas-liquid separator is connected with a second heat exchanger. The second heat exchanger is connected with a fourth evaporator. The second gas-liquid separator is connected with a third evaporator. The third evaporator is connected with the second heat exchanger. The fourth evaporator and the second heat exchanger are connected with a second compressor. The second evaporator and the first heat exchanger are connected with a first compressor through a third heat exchanger. The energy utilization rate and the refrigerating performance of the split multi-temperature-area double-refrigeration device are improved, and the refrigerating temperature interval is enlarged, so that universality is improved.

Description

technical field [0001] The invention relates to refrigeration equipment, in particular to a split type multi-temperature zone double refrigeration device. Background technique [0002] At present, refrigeration equipment (refrigerators, freezers, etc.) are widely used in people's daily life. With the continuous improvement of people's living standards, people have higher and higher requirements for food and refrigeration equipment in terms of environmental protection, energy saving, and freshness preservation. Food storage requirements, wine needs to be stored in the temperature zone of 5~20℃, fruits and vegetables should be stored in the temperature zone of 0~8℃, ordinary meat, fish and other products need to be stored in -18℃, and some Special foods need to be stored at ultra-low temperatures. For example, tuna needs to be stored in an environment around -55°C to ensure the deliciousness of its meat. In the prior art, refrigeration equipment with multi-temperature zone r...

AI Technical Summary

Problems solved by technology

In the prior art, refrigeration equipment with multi-temperature zone refrigeration function usually adopts cooling capacity distribution and corresponding electronic control strategy to realize multi-temperature zone refrigeration, but in the actual use process, the multi-temperature zone in the prior art On the one hand, the refrigeration equipment increases the heat transfer temperature and the energy utilization rate is low. On the other hand, the control system is cumbersome. During the user's use, it is easy to have a problem of cooling difference or even no cooling at a certain temperature; more importantly, different temperature zones cannot be used. Realize refrigeration with large temperature difference, and the refrigeration temperature range is small

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