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Oil-free refrigerant circulation technology for air-conditioning and refrigeration system

a technology of which is applied in the field of oil-free refrigerant circulation technology for air-conditioning and refrigeration system, can solve the problems of high energy efficiency of compressors, and achieve the effect of reducing maintenance costs and increasing energy efficiency

Inactive Publication Date: 2007-09-20
VENKATASUBRAMANIAM CHADALAVADA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0060] The present invention relates to oil-free refrigerant (OFR) circulation technology for air-conditioning and refrigeration system. More specifically, the present invention relates to oil-free refrigerant (OFR) circulation technology consisting of frictionless 99.99% oil-vapor free (OVF) refrigeration oil, ultra micron oil-aerosol separator with built-in reservoir, and electronic modulating oil level analyzer to increase energy efficiency and reduce maintenance cost. The oil-aerosol separator can filter solid contaminant particles down to one micron in size and at the same time can deliver 100% oil-aerosol free refrigerant. The electronic modulating oil level analyzer can maintain compressor crankcase oil level recommended by compressor manufacturers for CFC, HCFC, HFC, ammonia and CO2 refrigeration compressors at any given variable load.
[0061] The frictionless 99.99% oil-vapor free (OVF) refrigeration oil provides excellent hydrodynamic and elastohydrodynamic lubrication film for wear protection at high discharge gas temperature and at the same time provides excellent low temperature fluidity for better oil return by maintaining very low viscosity.
[0062] Moreover, frictionless 99.99% oil vapor free (OVF) refrigeration oil has zero moisture content, 13 / 11 oil cleanliness and low friction coefficient. Low friction co-efficient correlates well with thick film formation, even under extreme load and variable condition. The energy efficiency of a compressor is highly affected by lubricant friction loss. Therefore the use of frictionless oil vapor free (OVF) refrigeration oil with extremely low friction coefficient can enhance energy efficiency of a compressor.

Problems solved by technology

The energy efficiency of a compressor is highly affected by lubricant friction loss.

Method used

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  • Oil-free refrigerant circulation technology for air-conditioning and refrigeration system

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Embodiment Construction

[0066] Referring to FIG. 2, which shows schematically the oil-free refrigerant circulation system according to the present invention, the compressor 1 drives the contaminated refrigerant to the ultra micron oil-aerosol separator 5 through pipe 51, and then the ultra micron oil-aerosol separator 5 will collect 100% of the oil aerosol to be fed back via pipe 53 to the compressor 1 through the electronic modulating oil level analyzer 6. The 99.99% oil-vapor free (OVF) refrigerant vapor will first be de-superheated and then enter the condenser 2 through pipe 52 for condensation. The liquid refrigerant will then passes through the expansion device 3 and enter the evaporator 4 for evaporation by absorbing surrounding heat. The evaporated refrigerant vapor will then be sucked back into compressor 1.

[0067]FIG. 3 shows schematically the structure of ultra micron oil-aerosol separator according to the present invention. The compressor 1 will drive the contaminated refrigerant to the ultra mi...

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Abstract

An oil-free refrigerant circulation technology for air-conditioning and refrigeration system comprises 99.99% oil-vapor free refrigeration oil, 100% ultra micron oil-aerosol separator built-in with oil reservoir and electronic modulating oil level analyzer. The ultra micron oil-aerosol separator can filter solid contaminant particles down to one micron in size and at the same time can deliver 100% oil-aerosol free refrigerant. With this technology an oil-free refrigerant circulation can be achieved. The problems related to oil carry over, thermal and chemical stability, moisture, oil cleanliness and lubrication in the refrigeration circulation could therefore be avoided. As a result, the energy consumption of the refrigeration system can be largely reduced and the refrigeration efficiency of the system can be significantly enhanced. Thus COP is increased by the use of oil-free refrigerant circulation technology.

Description

FIELD OF THE INVENTION [0001] The present invention relates to oil-free refrigerant (OFR) circulation technology for air-conditioning and refrigeration system. More specifically, the present invention relates to oil-free refrigerant (OFR) circulation technology consisting of frictionless 99.99% oil-vapor free (OVF) refrigeration oil, ultra micron oil-aerosol separator with built-in reservoir, and electronic modulating oil level analyzer to increase energy efficiency and reduce maintenance cost. The oil-aerosol separator can filter solid contaminant particles down to one micron in size and at the same time can deliver 100% oil-aerosol free refrigerant. The electronic modulating oil level analyzer can maintain compressor crankcase oil level recommended by compressor manufacturers for CFC, HCFC, HFC, ammonia and CO2 refrigeration compressors at any given variable load. BACKGROUND OF THE INVENTION [0002] Referring to FIG. 1, which shows schematically the compressor refrigeration cycle, ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F25B43/02
CPCC10M171/008C10M175/0091C10M2203/1006C10M2207/2835F25B2500/16C10N2240/30F25B31/004F25B43/02F25B2400/02C10N2230/06C10N2030/06C10N2040/30
Inventor VENKATASUBRAMANIAM, CHADALAVADA
Owner VENKATASUBRAMANIAM CHADALAVADA
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