6 results about "Natural refrigerant" patented technology

The present application provides a heat pump system for a vehicle, which is capable of cooling or heating the interior of the vehicle by using a natural refrigerant complying with environmental regulations and effectively adjusting the temperature of a battery module by using a single cooler in which a refrigerant and a coolant are heat-exchanged.

In order to use a Compressor having an overall housing which comprises a compressor housing section in which a compressing unit is arranged for compressing a refrigerant entering said overall housing, said overall housing further comprises a motor housing section in which an electric motor for driving said compressing unit is arranged, said refrigerant is guided by said overall housing into the motor housing section and into the compressor housing section, and said electric motor comprises a rotor and a stator, said stator being provided with electric windings for generating a revolving magnetic field, with natural refrigerants the electric windings are wound of electric conductors being primarily made of ammonia resistant metal and isolated by an insulating layer being ammonia resistant.

The present invention provides a heat pump system for a vehicle, which can cool or heat the interior of the vehicle using a natural refrigerant to comply with environmental regulations, and efficiently adjust the temperature of a battery module using a single cooler that exchanges heat between the refrigerant and coolant. The heat pump system can operate in a supercritical cycle in which the pressure and temperature of the refrigerant are higher than the critical pressure and critical temperature by applying a natural refrigerant R744 refrigerant using carbon dioxide, thereby maximizing the cooling and heating performance.

In order to use a Compressor having an overall housing which comprises a compressor housing section in which a compressing unit is arranged for compressing a refrigerant entering said overall housing, said overall housing further comprises a motor housing section in which an electric motor for driving said compressing unit is arranged, said refrigerant is guided by said overall housing into the motor housing section and into the compressor housing section, and said electric motor comprises a rotor and a stator, said stator being provided with electric windings for generating a revolving magnetic field, with natural refrigerants the electric windings are wound of electric conductors being primarily made of ammonia resistant metal and isolated by an insulating layer being ammonia resistant.

This disclosure provides a refrigeration system that uses carbon dioxide as a natural refrigerant and can efficiently operate air conditioning equipment in a refrigerant circuit that includes air conditioning equipment and refrigeration equipment. [Solution] The refrigeration system in this disclosure comprises a refrigeration cycle circuit connecting an outdoor unit having a plurality of compressors, an outdoor heat exchanger, and a gas-liquid separator, an indoor unit having an indoor heat exchanger, and a refrigeration unit having a refrigerated heat exchanger, wherein the plurality of compressors are composed of low-stage compressors and high-stage compressors, the indoor heat exchanger with a high evaporation temperature is connected to the high-stage compressor, the refrigerated heat exchanger with a low evaporation temperature is connected to the low-stage compressor, and a branch pipe is provided to connect refrigerant piping connecting the indoor heat exchanger and the high-stage compressor, and refrigerant piping connecting the refrigerated heat exchanger and the low-stage compressor, with an on / off valve provided in the middle of the branch pipe.

The application discloses a kind of high-efficiency refrigerator oil compositions and preparation method thereof, by the synergy of multivariate base oil composite system and multifunctional additive package, ensure excellent low-temperature fluidity and good compatibility of refrigerant under the premise, significantly enhance the high-temperature oxidation stability of system, effectively inhibit the generation of oil sludge and carbon deposition, thereby greatly prolong the working life of lubricating system, create a balanced, strong adaptability, comprehensive reliable high-performance refrigerator oil solution, can fully meet the high standard, multidimensional requirements of new generation of environmental protection refrigerant system to lubricating oil. It fundamentally solves the performance short board and application limitation of traditional mineral oil, POE and PAG synthetic oil when adapting R290 etc. Natural refrigerant, realizes the significant leap of refrigerator oil comprehensive performance and the improvement of full working condition adaptability.