32 results about "Natural refrigerant" patented technology

A heat pump system for a vehicle is configured to perform cooling or heating of the vehicle interior by using a natural refrigerant, and efficiently adjust the temperature of the battery module by using a single chiller that heat-exchanges refrigerant and coolant.

A heat pump system for a vehicle cools or heats the vehicle interior by using a natural refrigerant, and efficiently adjusts the temperature of a battery module by using a single chiller that exchanges heat between refrigerant and coolant.

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.

A heat pump system for a vehicle capable of performing cooling or heating of a vehicle interior by using a natural refrigerant and efficiently adjusting a temperature of a battery module by using one cooler at which the refrigerant exchanges heat with a coolant. The system includes an air conditioning unit having a compressor, a first heat exchanger, a second heat exchanger, a first expansion valve, and a third heat exchanger connected by a refrigerant line to circulate refrigerant through the refrigerant line. The system also includes a cooler connected to the refrigerant line by a first connection line. The cooler is configured to adjust a temperature of a coolant by heat exchanging the coolant with a refrigerant supplied from the air conditioning unit.

Provided are an electrically operated valve capable of suppressing a decrease in durability, and a refrigeration cycle device having the electrically operated valve and using a natural refrigerant. The electric valve (1) is assembled in a refrigeration cycle device using a natural refrigerant. The electric valve (1) is provided with a valve element (30), a driving mechanism (40) for driving the valve element (30), and a shell (20), wherein the driving mechanism (40) is arranged on the inner side of the shell (20). A natural refrigerant is introduced into the inside of the housing (20). The drive mechanism (40) has a drive shaft (41) having a male thread (42t), and a bearing member (45) having a female thread (45t) screwed with the male thread (42t). Fluorine grease is applied to the drive shaft (41) and the bearing member (45).

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.

A heat pump system for a vehicle capable of cooling or heating the interior of the vehicle using a natural refrigerant and effectively adjusting the temperature of a battery module by using a single cooler in which the refrigerant and coolant exchange heat. The system includes an air conditioning unit having a compressor, a first heat exchanger, a second heat exchanger, a third heat exchanger, and a fourth heat exchanger connected by a refrigerant line such that refrigerant circulates through the refrigerant line. The system also includes a cooler connected to the refrigerant line by a first connection line. The cooler is configured to adjust a temperature of a coolant by heat exchanging the coolant with a refrigerant supplied from the air conditioning unit.

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.

A heat pump system for a vehicle may be capable of performing cooling or heating of an interior of the vehicle by using a natural refrigerant and efficiently adjusting the temperature of a battery module by using one chiller where a refrigerant and a coolant exchange heat. The system includes an air conditioner unit with a compressor, a first heat-exchanger, a second heat-exchanger, a third heat-exchanger, and a fourth heat-exchanger that are connected through a refrigerant line to circulate a refrigerant through the refrigerant line. The system also includes a chiller connected to the refrigerant line through a first connection line. The chiller is configured to adjust a temperature of the coolant by heat-exchanging a coolant with the refrigerant supplied from the air conditioner unit.

The invention provides an environment-friendly efficient heat exchanger adopting a natural refrigerant and refrigeration equipment, and relates to the technical field of heat exchange refrigeration, the environment-friendly efficient heat exchanger comprises a refrigeration mechanism, the refrigeration mechanism comprises a bottom frame, a corner plate is arranged on the bottom frame, a supporting frame is arranged on the corner plate, and a refrigerator is arranged on the supporting frame. According to the sampling device, cooling liquid needing to be refrigerated is sucked into the refrigerator through the suction pipe, and then a worker can control opening and closing of the extraction pipe through the control valve, so that the worker can extract the cooling liquid needing to be sampled; when the suction pipe enters the refrigerator for refrigeration, the working state of the refrigerator can be checked through a report lamp, and the corner plate of the refrigerator is installed on the bottom frame through the supporting frame, so that the practicability of the refrigerator in the actual use process is improved, and the practicability of the refrigerator is improved. And one end of the discharge pipe is in butt joint with the refrigerator to discharge the used refrigerating fluid through the discharge pipe for circulating refrigeration.

A heat pump system for a vehicle cools or heats the vehicle interior by using a natural refrigerant, and efficiently adjusts the temperature of a battery module by using a single chiller that exchanges heat between refrigerant and coolant.

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.

A temperature control apparatus including a refrigeration cycle device including a compressor, a first heat exchanger, an expander, and a second heat exchanger, and causing a natural refrigerant to circulate; a first fluid passage including a first side downstream flow path part that receives and causes the first fluid to flow, the first fluid exchanging heat with the natural refrigerant passing through the first heat exchanger, the first fluid then flowing out from the first heat exchanger; a second fluid passage including a second side downstream flow path part that receives and causes the second fluid to flow, the second fluid exchanging heat with the natural refrigerant passing through the second heat exchanger, the second fluid then flowing out from the second heat exchanger; and a heat transfer member capable of receiving and causing the first and second fluids to flow.

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).

A heat pump system for a vehicle may be capable of performing cooling or heating of an interior of the vehicle by using a natural refrigerant and efficiently adjusting the temperature of a battery module by using one chiller where a refrigerant and a coolant exchange heat. The system includes an air conditioner unit with a compressor, a first heat-exchanger, a second heat-exchanger, a first expansion valve, and a third heat-exchanger that are connected through the refrigerant line to circulate a refrigerant through the refrigerant line. The system also includes a chiller connected to the refrigerant line through the first connection 10 line. The chiller is configured to adjust a temperature of a coolant by heat-exchanging the coolant with the refrigerant supplied from the air conditioner unit.

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 discloses an ultrasonic atomization flash evaporation cooling tower, which includes a first heat exchanger, a negative pressure fan, a second heat exchanger, a sump, a flow distribution plate, an ultrasonic atomizer and an enclosed housing; the inlet of the first heat exchanger is connected to the fluid to be cooled for pre-cooling the hot fluid; the second heat exchanger is connected to the first heat exchanger; a negative pressure fan is included between the first heat exchanger and the second heat exchanger; the sump is located at the lower end of the ultrasonic atomization flash evaporation cooling tower; the ultrasonic atomizer is located inside the sump for atomizing the water in the sump. In the present invention, micron-sized atomized water droplets undergo a phase change under negative pressure conditions to absorb the heat in the enclosed housing, reducing the air temperature around the heat exchanger. Compared with the existing cooling technologies, on the one hand, the heat transfer capacity of the cooling tower is improved, thereby reducing the heat transfer area and the initial investment, and on the other hand, the application range of the refrigeration system can be expanded, which is beneficial to the popularization and application of the natural refrigerant CO2.

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.

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.

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.