Air conditioning refrigeration system

Abstract

Provided is an air conditioning refrigeration system. An outlet of a high-back-pressure rotary compressor is connected with an inlet of a condenser, an outlet of the condenser is connected with a liquid inlet of a heat regenerator, a liquid outlet of the heat regenerator is connected with an inlet of an expansion valve, an outlet of the expansion valve is connected with an inlet of an evaporator, an outlet of the evaporator is connected with a gas inlet of the heat regenerator, and a gas outlet of the heat regenerator is connected with an inlet of the high-back-pressure rotary compressor. Refrigerating fluid enters the high-back-pressure rotary compressor firstly, and is compressed into high-temperature high-pressure gas entering the condenser, the gas is condensed into intermediate-temperature high-pressure liquid, and heat is discharged into air. The refrigerating fluid flows through the heat regenerator and enters the expansion valve, and is throttled to be in a low-temperature low-pressure gas-liquid mixing state, then the refrigerating fluid enters the evaporator, heat exchange is carried out on the refrigerating fluid and the air in the environment, the temperature of the air is reduced, and therefore the refrigeration effect is achieved. According to the system, efficiency and stability are improved, oil return is good, the probability of blocking capillary tubes is reduced, and the injection amount of the refrigerating fluid is reduced.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to an air-conditioning and refrigeration device with a regenerator. Background technique [0002] Because CFCs (hydrochlorofluorocarbons) and HCFCs (hydrofluorocarbons) refrigerants have a destructive effect on the ozone layer, the refrigerants commonly used in the field of refrigeration and air conditioning have been eliminated or will be phased out gradually. Now the refrigerants widely used in the field of refrigeration and air conditioning Refrigerants include R134a (freon HFC134a), and HFC mixture refrigerants R404A, R407C, R410A, etc. The molecules of these refrigerants contain hydrogen and fluorine, do not contain chlorine, do not destroy the ozone layer, but have a high greenhouse effect. The trend of global warming is becoming more and more serious, and these alternative refrigerants are also facing the situation of being phased out of the refrigeration field. Hydroc...

AI Technical Summary

Problems solved by technology

However, this utility model patent does not describe the type of compressor used and the selection of lubricating oil for the compressor in the device

If the traditional compressor and lubricating oil are used, there are still many technical problems in the system: most of the compressors used are piston or scroll compressors, and the compressor lubricating oil pool is under the intake pressure

When the lubricating oil pool of the compressor is under the intake pressure, the compressor has a heating loss of steam suction, which increases the harmful superheat of the suction steam and reduces the cooling capacity, thus increasing the power consumption and reducing the efficiency of the compressor

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