Situation Analysis refrigeration compressor technology

    In recent years, as a core component of a compressor refrigeration system, in addition to the continuous improvement of its own performance, its research and development has been around two major themes of environmental protection and energy saving, mainly in the following aspects of technological development.

   First, to adapt to changes in the refrigerant

    Has damaging effects on the ozone layer of CFCs and HCFCs refrigerants are eliminated substances "Montreal Protocol" provisions, the latter began to gradually be replaced by HFCs and Natural Refrigerants 1980s. To meet the alternative refrigerant compressor and a big improvement in technology, the development of R134a, R404A, R407C and R410A refrigerants HFCs and other compressors, and R600a and R290 refrigerant compressor and other HCs class. CO2 transcritical cycle compressor has been successfully used in automotive air-conditioning and heat pump water heaters, ordinary CO2 and NH3 compressor cascade system is being used in commercial refrigeration, NH3 hermetic compressors are used in air conditioners and refrigerators.

   Second, the conversion technology and digital swirl

    Stepless adjustment of the compressor capacity to better match refrigeration unit load changes, improve operational unit WHOLE efficiency and adaptability. Frequency rolling piston and rotary compressors nest has been widely used in various types of air conditioning units, is currently being expanded frequency technology applied to the piston, screw or centrifugal compressors, refrigerators and gradually expand production with a variable speed compressor piston. The new standards for energy efficiency of September 2008 enacted will further stimulate the development of inverter technology. The proportion of applications mechanical continuously variable capacity digital swirl multiple air conditioner compressor units in gradually expanding.

Third, the economy is qi and stand-alone multi-stage compression

    Condensing single-stage compression refrigeration system to work, the evaporation temperature difference of 40-60 ℃, in cryogenic and low temperature air source heat pump and other occasions, the temperature can reach 75 ℃. For the single compressor can have a greater temperature difference, economizer qi (EVI) of screw compressors and scroll compressors have mass, qi piston compressor and rolling piston compressors are also studied. Single stage compression of multi-cylinder piston compressor refrigeration equipment in more and more common, single-cylinder two-stage compression rolling piston compressor has successfully developed and start applying. Single centrifugal compressor has three compression is a sign of energy-efficient products.

   Fourth, to expand the scope and capacity of applications

    The longest, strongest adapt reciprocating piston compressor capacity is common models a wide range of commercial refrigeration in the refrigerator and continue to champion the field, and in the face of air conditioning by rolling piston, scroll and screw compressorsIt challenges.

    The compact centrifugal compressor with magnetic bearings, is highly mechatronics products, began to be used chillers and screw compressor with capacity begin to overlap. Large scroll compressors and screw compressors have closed production, both in terms of volume has been convergence, scroll compressors for refrigeration production continues to grow, three-screw compressors on the market. Rolling piston compressor capacity range has been extended up to 14hp, down to 1 / 8hp. To solve the problem of leakage and wear after use R410A, the study of the deformation structure rolling piston compressors are extremely active, which swing compressor rotor obtain engineering applications.

    Fifth, special and special purpose compressors

    Seal is the core component of the bus air conditioning compressor, the compressor is still the dominant domestic brands. Air-source heat pump water heater dedicated rolling piston compressor has been mass production. 12V, 24V and 48V DC and other special power-driven air conditioner, refrigerator compressors has started mass production, and rotary piston, piston, triangular rotor based. Microelectronics cooling and air conditioning with micro-compressor body is also in development.

    n short, the compressor technology to change with the times, constantly improve their own performance, continuing the expansion of application fields, while continuing to develop new compressor.