Refrigerating system of cold-carrying type refrigerated container

Abstract

The invention discloses a refrigerating system of a cold-carrying type refrigerated container. The refrigerating system of the cold-carrying type refrigerated container comprises a compressor refrigerating process and a cold-carrying releasing process connected through a heat exchanger. A conventional compressor refrigerating system is adopted in the refrigerating machine process, and then evaporation refrigeration is conducted in the heat exchanger. The cold-carrying releasing process comprises a plurality of liquid storage tanks with independent heat preservation and storage functions, an inner circulating pump, a three-way regulating valve, a box circulating pump and a refrigerating channel in the box, and is connected with the heat exchanger. In the cold carrying process, a refrigerating unit starts refrigerating, the three-way regulating valve opens an inner circulating channel, the inner circulating pump starts and drives the cold carrying liquid in the liquid storage tanks, heat exchange is conducted through the heat exchanger, and heat in the cold carrying liquid is absorbed out. When refrigeration is needed in the box, the three-way regulating valve opens the liquid storage tanks and the refrigerating channel in the box, and the cold carrying liquid enters the box through the box circulating pump to absorb heat in the box.

Description

technical field [0001] The invention relates to the technical field of refrigerated containers, in particular to a cooling system for refrigerated containers carrying cold. Background technique [0002] Refrigerated container technology is very mature at present, but as far as the current technology is concerned, there are still some problems: [0003] 1. When the refrigerated goods are loaded, a large cooling power is required to quickly pull the temperature in the refrigerator to a safe storage temperature. In order to achieve this condition, a very large cooling power is often required, especially in summer When the temperature is very high, at the same time to achieve this cooling condition, it also needs to consume a lot of energy. [0004] 2. When high-power refrigeration evaporates, a large amount of liquid refrigerant is required to participate, and the compressor will have a very high load to press the gaseous refrigerant into the condensing radiator. However, when...

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Problems solved by technology

[0003] 1. When the refrigerated goods are loaded, a large cooling power is required to quickly pull the temperature in the refrigerator to a safe storage temperature. In order to achieve this condition, a very large cooling power is often required, especially in summer When the temperature is very high, it also needs to consume a lot of energy to achieve this cooling condition at the same time.

[0004] 2. When high-power refrigeration evaporates, a large amount of liquid refrigerant is required to participate, and the compressor will have a very high load to press the gaseous refrigerant into the condensing radiator. However, when the ambient temperature is high, especially in summer The temperature on the road surface is very high, and the heat dissipation effect of the radiator will be greatly reduced. At this time, if rapid cooling is required, the energy consumption will be very large

[0005] 3. Between the start and stop of the refrigeration system, a buffer time is required to reduce the start-up pressure of the compressor. During refrigeration, the thermostat senses that the temperature has reached and stops the compressor from cooling, and the thermostat senses that the temperature exceeds the limit. Start the compressor to cool down, but in order to protect the compressor and reduce energy consumption, the temperature difference will be set very large, because the higher the density, the higher the energy consumption may mean

[0006] 4. When cooling and evaporating, the liquid refrigerant will evaporate from the front end of the tube in the evaporator. After the temperature at the front end of the tube drops, the refrigerant can flow to the back tube to continue to evaporate. Based on this principle, the uniformity of tube evaporation there will be big problems

And the container is very long, cooling in such a long space, the cooling distance will become very long, and there are many cooling uniformity problems, although the existing technology is trying hard to solve this difference, the effect is not very good, The lower the cooling conditions, the greater the difference

Due to the poor uniformity of cooling, it will seriously affect the cooling area

[0007] Although the refrigerant absorbs a lot of heat when it evaporates, in the process of evaporative refrigeration, the refrigerant needs continuous heat dissipation to condense. Therefore, the flow rate of refrigeration condensation becomes the key to the cooling speed. slow down performance

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