Multi-temperature-zone refrigerating system and multi-temperature-zone refrigerating device

Abstract

The invention provides a multi-temperature-zone refrigerating system and a multi-temperature-zone refrigerating device. A first gas-liquid separator and a first heat exchanger in the 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, 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 respectively connected with a second compressor, and the second evaporator and the first heat exchanger are respectively connected with a third heat exchanger and a first compressor. High energy utilization rate and refrigerating performance of the multi-temperature-zone refrigerating system are achieved, and a refrigerating temperature interval is enlarged to improve universality.

Description

technical field [0001] The invention relates to refrigeration equipment, in particular to a multi-temperature zone dual refrigeration system and multi-temperature zone refrigeration equipment. 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 e...

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

Images