19 results about "Natural refrigerant" patented technology

Disclosed are a method for controlling heating of an HVAC system for an electric vehicle and an HVAC system thereof. According to various embodiments, in an operation of the HVAC system including a main heating unit in which a first refrigerant circulates and an auxiliary heating unit in which a second refrigerant circulates, at least one of the first refrigerant and the second refrigerant may comprise at least one of: a natural refrigerant; a hydrofluorocarbon (HFC)-based refrigerant; a hydrofluoroolefin (HFO)-based refrigerant; a hydrochlorofluorocarbon (HCFC)-based refrigerant; a hydrocarbon-based refrigerant that is not a natural refrigerant; and a halon or a perfluorocarbon (PFC)-based refrigerant.

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.

Disclosed are a method and apparatus for operating a virtual HVAC model implemented as a digital twin. The method is configured to simulate and control thermal conditions within a vehicle environment. The method comprises receiving input data related to vehicle operating conditions and environmental factors, and processing the input data using a trained artificial intelligence model to simulate thermal behavior within a vehicle cabin. The virtual HVAC system is then controlled based on the simulation to evaluate performance and optimize energy usage. The virtual HVAC model utilizes a refrigerant selected from a wide range of types, including natural refrigerants, hydrofluorocarbons (HFCs), hydrofluoroolefins (HFOs), and others.

Lubricant compositions for use with natural refrigerants, wherein the lubricant comprises at least 50 wt%of a mineral oil and 0.5 to 6 wt%of at least one aryl phosphate. The lubricants are useful as compressor lubricants, for example refrigeration compressors and may improve compressor efficiency because of the lubricants' relatively low kinematic viscosity at 40 ℃ ranging from about 1.5 to about 4 cSt.

A mounting structure of an air conditioning device (10) for vehicles comprises: a gas cooler (18) that exchanges heat between outside air and a refrigerant which is a natural refrigerant; an accumulator (20) that separates the refrigerant into gas and liquid; a connection pipe (50) that connects a first port (46) provided to a lower part of the gas cooler (18) and a second port (48) provided to a lower part of the accumulator (20); and a PT sensor (45) provided to the connection pipe (50). The mounting position of the PT sensor (45) is higher than the center of a hub (58) for a front wheel (56) of the vehicle.

Refrigerant blends of HFOs and HCs, having HFOs as the main component, provide better cooling capacity than incumbent HFOs and maintain low flammability. Refrigerant blends of HFOs and HCs, having HCs as the main component, allow for larger HC charge at reduced flammability. Such compositions include (i) at least one compound selected from HFO-1234ze(E), HFO-1234ze(Z), HFO-1336mzz(E), HFO-1336mzz(Z), HCFO-1233zd(E), HCFO-1233zd(Z), CFO-1112, and combinations thereof, (ii) at least one other compound selected from HC-290, HC-1270, R-600, R-600a, R-601, R-601a, R-744, R-717, and combinations thereof, and optionally (iii) at least one other compound selected from HFC-134, HFC-134a, HFC-125, HFC-32, HFC-152a, and combinations thereof. These compositions are useful as refrigerants in air conditioning, heat pumps, refrigeration, and / or chillers.

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.

Disclosed are a method for controlling heating of an HVAC system for an electric vehicle and an HVAC system thereof. According to various embodiments, in an operation of the HVAC system including a main heating unit in which a first refrigerant circulates and an auxiliary heating unit in which a second refrigerant circulates, at least one of the first refrigerant and the second refrigerant may comprise at least one of a natural refrigerant; a hydrofluorocarbon (HFC)-based refrigerant; a hydrofluoroolefin (HFO)-based refrigerant; a hydrochlorofluorocarbon (HCFC)-based refrigerant; a hydrocarbon-based refrigerant that is not a natural refrigerant; and a halon or a perfluorocarbon (PFC)-based refrigerant.

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.

According to various embodiments of the present invention, there is provided an operation processing method of a virtual air-conditioning model implemented by digital twin and an apparatus therefor, the method performing temperature control of a vehicle based on a virtual air-conditioning model reflecting a refrigerant, the refrigerant includes at least one of a natural refrigerant, a hydrofluorocarbon (HFC) refrigerant, a hydrofluoroolefin (HFO) refrigerant, a hydrochlorofluorocarbon (HCFC) refrigerant, a hydrocarbon refrigerant, which is a non-natural refrigerant, and a Haron or perfluorocarbon (PFC) refrigerant, and the refrigerant includes at least one of a natural refrigerant, a hydrofluorocarbon (HFC) refrigerant, a hydrofluoroolefin (HFO) refrigerant, a hydrochlorofluorocarbon (HCFC) refrigerant, a hydrocarbon refrigerant, which is a non-natural refrigerant, and a Haron or perfluorocarbon (PFC) refrigerant.

The invention relates to the technical field of air conditioners, in particular to a CO2 air conditioning system. The air conditioning system aims at solving the problem that an existing air conditioning system is low in energy efficiency in an extreme environment. In order to achieve the purpose, the CO2 air conditioning system comprises a first compressor, a first heat exchanger, a throttling device, a second heat exchanger and a thermoacoustic assembly, and the thermoacoustic assembly comprises a hot end heat exchanger and a cold end heat exchanger. Wherein a refrigerant loop is formed among the first compressor, the first heat exchanger, the throttling device and the second heat exchanger, and the hot end heat exchanger and / or the cold end heat exchanger are / is communicated with the refrigerant loop through a pipeline. Under the condition that the technical scheme is adopted, a refrigerant can be overheated or overcooled through the hot end heat exchanger or the cold end heat exchanger so as to improve the refrigerating energy and the heating energy efficiency of the CO2 air conditioning system, CO2 serves as a natural refrigerating working medium, influences on the environment are small, the physical property and the chemical property are stable, and therefore the CO2 air conditioning system is suitable for being used in the air conditioning system. And stable work of the air-conditioning system is facilitated.

Disclosed are a method and an apparatus for thermal management of a vehicle battery. The method comprises controlling a temperature of the vehicle battery based on a refrigerant. The refrigerant comprises at least one selected from the group consisting of: a natural refrigerant; a hydrofluorocarbon (HFC)-based refrigerant; a hydrofluoroolefin (HFO)-based refrigerant; a hydrochlorofluorocarbon (HCFC)-based refrigerant; a hydrocarbon-based refrigerant that is not a natural refrigerant; and a halon or a perfluorocarbon (PFC)-based refrigerant.

According to various embodiments of the present invention, there are provided a battery thermal management method and a battery thermal management apparatus for an automobile, the battery thermal management method performing temperature control of a battery based on a refrigerant, the refrigerant includes at least one of a natural refrigerant, a hydrofluorocarbon (HFC) refrigerant, a hydrofluoroolefin (HFO) refrigerant, a hydrochlorofluorocarbon (HCFC) refrigerant, a hydrocarbon refrigerant, which is a non-natural refrigerant, and a Haron or perfluorocarbon (PFC) refrigerant, and the refrigerant includes at least one of a natural refrigerant, a hydrofluorocarbon (HFC) refrigerant, a hydrofluoroolefin (HFO) refrigerant, a hydrochlorofluorocarbon (HCFC) refrigerant, a hydrocarbon refrigerant, which is a non-natural refrigerant, and a Haron or perfluorocarbon (PFC) refrigerant.

A refrigeration device according to one embodiment is provided with a compressor (11), a compressor downstream heat exchanger (12), an expander (21), and an expander downstream heat exchanger (22). The compressor (11) and the expander (21) are connected by a common drive shaft (18A). The compressor downstream side heat exchanger (12) cools the natural refrigerant flowing out from the compressor (11), and the expander downstream side heat exchanger (22) exchanges heat between the natural refrigerant flowing out from the expander (21) and a temperature control object. The compressor downstream-side heat exchanger (12) and the expander downstream-side heat exchanger (22) are arranged so as to be aligned in a direction parallel to the axial direction (Ax) of the drive shaft (18A).

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.

According to various embodiments of the present invention, provided are a heating control method of an air conditioning system and an air conditioning system thereof, in operation of an air conditioning system of an electric vehicle including a main heating part of a first refrigerant cycle and an auxiliary heating part of a second refrigerant cycle, the first refrigerant and the second refrigerant include at least one of a natural refrigerant, a hydrofluorocarbon (HFC) refrigerant, a hydrofluoroolefin (HFO) refrigerant, a hydrochlorofluorocarbon (HCFC) refrigerant, a hydrocarbon refrigerant that is a non-natural refrigerant, and a Haron or perfluorinated carbon (PFC) refrigerant, and the refrigerant of the first refrigerant or the second refrigerant includes at least one of a natural refrigerant, a hydrofluorocarbon (HFC) refrigerant, a hydrofluoroolefin (HFO) refrigerant, a hydrochlorofluorocarbon (HCFC) refrigerant, a hydrocarbon refrigerant that is a non-natural refrigerant, and a Haron or perfluorinated carbon (PFC) refrigerant.

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.

This invention provides an air conditioning system mounting structure that can effectively prevent the pressure sensor from being submerged in water. [Solution] The mounting structure of the vehicle air conditioning system 10 includes a gas cooler 18 that exchanges heat between a natural refrigerant and outside air, an accumulator 20 that separates the refrigerant into gas and liquid, a connecting pipe 50 that connects a first port 46 provided at the bottom of the gas cooler 18 and a second port 48 provided at the bottom of the accumulator 20, and a PT sensor 45 provided on the connecting pipe 50, wherein the mounting position of the PT sensor 45 is higher than the center of the hub 58 of the front wheel 56 of the vehicle.