Multiple-temperature-zone double-flow-way refrigeration equipment

Abstract

The invention provides multiple-temperature-zone double-flow-way refrigeration equipment. The multiple-temperature-zone double-flow-way refrigeration equipment includes a double refrigeration system, a blower fan, an outdoor casing and a plurality of indoor storage cabinets, wherein a first condenser in the double refrigeration system and a first gas-liquid separation device in the double refrigeration system are connected; the first gas-liquid separation device is connected with a first heat exchanger; the first heat exchanger is connected with a second evaporator; the first gas-liquid separation device is connected with a first evaporator; the first evaporator is connected with the first heat exchanger; the second evaporator and the first heat exchanger are connected with a first compressor through a third heat exchanger; a third capillary and a first back heating pipe are arranged in a first heat regenerator, and perform heat exchange with each other; a fourth capillary and a second back heating pipe are arranged in a second heat regenerator, and perform heat exchange with each other; a heat exchange channel of the second heat exchanger is connected with an inlet of a second compressor through the first back heating pipe; and an outlet of a fourth evaporator is connected with an outlet of the second compressor through the second back heating pipe. The multiple-temperature-zone double-flow-way refrigeration equipment can improve the utilization rate of energy and the refrigeration performance, and can enlarge the refrigeration temperature range to improve the universality.

Description

technical field [0001] The invention relates to refrigeration equipment, in particular to a refrigeration equipment with multiple temperature zones and double flow paths. 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-te...

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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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