Energy-saving refrigeration system capable of switching refrigerants and its working method

Abstract

The invention discloses an energy-saving refrigeration system capable of switching refrigerants and a working method thereof. The refrigeration system includes an evaporator, a compressor unit, a condenser, a first electronic expansion valve, a second electronic expansion valve, and a first refrigerant liquid storage tank , the second refrigerant liquid storage tank, gas-liquid separator, gas storage tank and multiple electronic control valves, through the cooperation of multiple electronic control valves and compressor units, the refrigerant in the refrigeration system can be recovered / switched to achieve cooling capacity Adjustment and cooling speed adjustment, responding to the real-time needs of the user at low cost, and the entire system has a simple process structure, simple control, high overall efficiency, and good economy.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to an energy-saving refrigeration system capable of switching refrigerants and a working method thereof. Background technique [0002] After nearly 200 years of application and development history, refrigeration technology has been applied in various fields of human daily life, especially the low-temperature storage of objects. The penetration rate of household refrigerators (cabinets) in my country is very high, and consumes a large amount of electric energy every year. The development of energy-saving technology for refrigerators (cabinets) is of great significance for alleviating energy shortages, reducing polluting gas emissions, and realizing sustainable development of the national economy. At present, there are many researches on the components of energy-saving and high-efficiency refrigerators (cabinets), such as high-efficiency heat exchangers, high-efficiency compress...

AI Technical Summary

Problems solved by technology

The system adopts a rectification tower structure. Although it can quickly provide changes in the concentration of the working medium to adjust the operating temperature of the air conditioner, the existence of the rectification tower increases the complexity of the system and is inconvenient for popularization.

Chinese invention patent CN 108826727A reports a mixed working medium refrigeration system with adjustable working medium components, which can adjust the circulating components of the mixed working medium refrigeration system to realize refrigeration temperature adjustment and cooling speed adjustment, but the system only effectively utilizes The large cooling capacity and cooling speed of the low-boiling point working fluid did not make effective use of the energy-saving characteristics of the high-boiling point working medium

[0005] Chinese invention patent CN 105402979 A reports a new type of refrigeration system for refrigerators with non-azeotropic mixed working fluid segregation cycle. This system uses two working fluids with different boiling points to provide two evaporation temperatures that can work in parallel at the same time. The system can Adjust the refrigerating capacity of the refrigerating evaporator and refrigerating evaporator of the refrigerator, but cannot realize energy-saving mode adjustment for the freezer that has reached thermal balance

At present, there is still a lack of an energy-saving refrigeration system that can not only realize the adjustment of the freezing capacity of the refrigerator, but also meet the needs of users for low power consumption and "rapid cooling"

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