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

first, the frequency conversion technology and digital vortex

stepless stepless adjustment of the compressor capacity, can better match the load change of the chiller unit, effectively improve the efficiency and adaptability of the whole unit operating conditions. The frequency of rolling piston and rotary compressor has been widely used in various types of home air conditioning units, the frequency conversion technology is expanding applied to the piston and screw and centrifugal compressor, piston compressor with variable frequency refrigerator production is also gradually expanding. The new air conditioner energy efficiency standards promulgated in September 2008 will further stimulate the development of frequency conversion technology. The application of the digital scroll compressor with mechanical continuous variable capacity in the multi air conditioning unit is gradually expanding.

two,

has to adapt to the change of refrigerant damage to the ozone layer of the CFCs and HCFCs refrigerants, is the "Montreal Protocol" provisions of the elimination of material, late 1980s began gradually by HFCs and natural refrigerant. Compressor in order to adapt to alternative refrigerants in technology has been greatly improved, the development of R134a, R404A, R407C and R410A HFCs refrigerant compressor, as well as R600a and R290 HCs refrigerant compressor. CO2 transcritical cycle compressor has been successfully used in automotive air conditioning and heat pump water heater, ordinary CO2 compressor and NH3 stack system is being used for commercial refrigeration, closed NH3 compressor is used in air conditioners and refrigerators.

three, economizer air supply and single stage compression

single stage compression refrigeration system the normal work of the condensation and evaporation temperature of 40-60 DEG C, in the deep cold and low temperature air source heat pump and other occasions, the temperature can reach 75 DEG C. For the single machine can produce large temperature difference, economizer air (EVI) of the screw compressor and the scroll compressor has been mass production, and the rolling piston compressor air piston compressor is also investigated. Single machine two stage compression multi cylinder piston compressor is more and more popular in the refrigeration equipment, the single engine two stage compression double cylinder rolling piston compressor has been successfully developed and applied. Single machine three stage compression centrifugal compressor is a high energy efficiency logo products.



, a special four compressor shaft seal and special purpose is the bus air conditioning core components of the compressor, the compressor is still the leading domestic brands. Air source heat pump water heater dedicated rolling piston compressor has been mass production. 12V, 24V and 48V DC power supply, such as a variety of special power driven air-conditioning, refrigerator compressor has also been mass production, and rolling piston, piston type, triangular rotor based. The cooling of micro electronic devices and the miniature compressor for human air conditioning are also being developed.
in short, compressor technology to adapt to the changes of the times, and constantly improve their own performance, continue to expand the application field, while developing new compressors.

five, expand the capacity range and application fields of

, the longest to reciprocating piston compressor is the most common type of a wide range of capacity, continue to excel in the refrigerator and commercial refrigeration field, and in the field of air conditioning is rolling piston type, vortex type and screw compressor challenge.
compact centrifugal compressor with magnetic bearings, is a highly integrated mechanical and electrical products, began to be used in chillers, and with the capacity of the screw compressor began to overlap. Large scroll compressor and fully enclosed screw compressor has been mass production, the two have been in the capacity of convergence, for the production of frozen scroll compressor continues to grow, the three screw compressor also put on the market. Rolling piston compressor capacity range has been extended to 14hp, down to 1/8hp. In order to solve the problem of leakage and wear after using R410A, the research on the deformation structure of rolling piston compressor is very active.