Refrigeration device

Abstract

The invention discloses a refrigeration device, comprising a refrigeration cycle which is at least composed of a compressor, a condenser, a swelling mechanism and an evaporator, wherein an R32 refrigerant and refrigerating machine oil are filled in the refrigeration cycle; the refrigerating machine oil is formed by mixing more than two of polyalkane glycol ether, polyvinyl ether, poly alpha olefin, alkylbenzene and mineral oil randomly; the second-layer separate temperature of one of the random more than two and the R32 refrigerant is lower than 10 DEG C below zero; the second-layer separate temperature of the other of the random more than two and the R32 refrigerant is higher than 10 DEG C below zero; the kinematic viscosity of the refrigerating machine oil is 2-100mm2 / s when the temperature is 40 DEG C; more than one of antioxygen, acid catcher, antifoaming agent and extrusion antiwear agent is added into the refrigerating machine oil. The refrigerating machine oil and the R32 refrigerant have excellent dissolving capacity, the oil return property of the system is improved, and the reliability of the compressor and the system performance are improved.

Description

technical field [0001] The invention relates to a refrigeration device. Background technique [0002] In recent years, due to the destructive effect of the traditional freon R22 refrigerant on the ozone layer, the use of R22 refrigerant has been limited by the Montreal International Treaty and will be discontinued in the future. In addition, with global warming, considering the global warming coefficient GWP, high-GWP R410A refrigerants will eventually be replaced by low-GWP refrigerants. At present, the industry is looking for an environmentally friendly refrigerant for development. As a natural refrigerant, R290 has attracted the attention of the industry, but due to its flammability, explosion and low charge requirements, its use is limited at this stage. R32 refrigerant, as one of the chlorine-free fluorinated hydrocarbons and one of the candidate refrigerants with low global warming coefficient GWP, has attracted the attention of the industry due to its environmental ...

AI Technical Summary

Problems solved by technology

[0004] According to the principle of "like dissolves like" in chemistry, if you want to find an oil that is compatible with R32 refrigerant, you must increase the polarity of the oil, but for refrigerator oil, due to the increase in polarity, the viscosity will often decrease, affecting The reliability of the compressor; therefore, ensuring the polarity of the refrigeration oil and ensuring that the refrigeration oil has a certain viscosity is the main subject of developing a suitable refrigeration oil for R32 refrigerant

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