Enclosed oil quantity optimization method for rotary compressor using hydrocarbon refrigerant

Abstract

The invention relates to an enclosed oil quantity optimization method for a rotary compressor using hydrocarbon refrigerant. The enclosed lubricating oil quantity of the compressor is calculated according to the following formula: m is less than or equal to 1.325 X P*(Q / K) 0.5*LFL1.25, wherein m is the enclosed lubricating oil quantity of the compressor, Q is air conditioner refrigeration capacity which is determined under conditions regulated in the national standard when the compressor is carried by an air conditioner, LFL is the lowest combustion limit of the refrigerant, P and K is parameters, the P ranges from 1.8 to 2.2 and the K ranges from 150 to 220. By adopting the enclosed oil quantity calculation formula disclosed by the invention, the enclosed lubricating oil quantity can be limited, the mass of the refrigerant dissolved in the lubricating oil in the shell of the compressor can be reduced, the content of the refrigerant in the shell of the compressor is reduced, the enclosed refrigerant quantity of the entire air conditioning system is decreased, the safety of the hydrocarbon air conditioning system is improved and the enclosed refrigerant quantity of the air conditioning system is enabled to better satisfy the current regulations.

Description

technical field [0001] The invention relates to a method for reducing the amount of sealing oil of a hydrocarbon refrigerant hermetic rotary compressor, in particular to an optimization method for a hydrocarbon refrigerant rotary compressor. Background technique [0002] R22 refrigerant has been listed as a phase-out refrigerant by the "Montreal Protocol". Europe and Japan have already begun to switch to R410A refrigerant replacement, and the United States will also ban the use of R22 in new refrigeration products in 2010. China has also accelerated the pace of R22 phase-out, which will be frozen at the average level from 2009 to 2010 in 2013, and the requirement of 10% of the baseline level must be reduced in 2015. And some major domestic brands have also begun to launch environmentally friendly air conditioners with R410A as the refrigerant. However, the GWP value of R410A is larger than that of R22. The "Kyoto Protocol" has listed R410A as a greenhouse gas for controlle...

AI Technical Summary

Problems solved by technology

Since the lubricating oil in the compressor is dissolved with refrigerant, if the amount of lubricating oil sealed in the compressor using hydrocarbon refrigerant is the same as that of the currently commonly used non-flammable refrigerant compressors such as R22 and R410A, then more lubricating oil is sealed. , the content of flammable refrigerant in the system is relatively large, which will not be conducive to the safety of flammable air conditioners

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