13031 results about "Refrigerant" patented technology

The shutdown of a compressor (10) installed in a refrigerant circuit (2) in air conditioning or refrigeration system is controlled so as to prevent unpowered reverse rotation of the compressor. Prior to terminating electric power to the compressor drive motor (24), the pressure within the system is relieved and substantially equalized across the compressor, thereby eliminating the possibility of unpowered reverse rotation of the compressor at shutdown. Pressure relief and equalization may be achieved by reducing the operating speed of the compressor to a low forward speed for a period of time prior to deenergizing the compressor drive motor. Pressure equalization may also be achieved by driving the compressor in reverse rotation prior to deenergizing the drive motor.

A compressor assembly may include a shell, a discharge fitting, a muffler, a compression mechanism, and a motor. The shell may have an opening therethrough with the discharge fitting generally extending therefrom. The muffler may be in communication with the discharge fitting and may be external to the shell. The muffler may have an inlet proximate the discharge fitting, an outlet distal from the discharge fitting, and a body portion extending therebetween. The muffler may include a valve assembly proximate the outlet. The compression mechanism may be contained within the shell and include a suction inlet and a discharge passageway. The discharge passageway may be connected to the opening in the shell for direct discharge of refrigerant from the compression mechanism to the discharge fitting. The motor may be contained within the shell and drivingly coupled to the compression mechanism.

A heat pump system of a vehicle includes a first cooling device including a battery module and a first line for circulating a coolant, an air conditioner unit including a compressor, an internal condenser, a main heat exchanger, a first expansion valve, and an evaporator that are interconnected through a refrigerant line for circulating a refrigerant, and a chiller connected to the first cooling device through the first line, connected to the refrigerant line through a first connection line, and configured to adjust a coolant temperature through heat-exchanging a selectively introduced coolant with the refrigerant. The air conditioner unit further includes a second expansion valve, a first valve, a second valve, a second connection line, a third connection line, and a fourth connection line.

A heat pump system for a vehicle may efficiently adjust the temperature of heating elements by using one chiller where a refrigerant and a coolant exchange heat. At the same time, the heat pump system may efficiently perform cooling and heating of a rear seat by using a rear heating, ventilation, and air conditioning (HVAC) module provided with one heat-exchanger.

An air conditioner is provided. The air conditioner may include a case including an intake port and a discharge port, a fan that is disposed inside of the case and forms an air flow, an indoor heat exchanger that heat-exchanges air inside of the case with a refrigerant, and a guide module that is disposed downstream of the fan and guides the air flow flowing to the discharge port. The guide module may include a plurality of vanes arranged in a row in a discharge flow path formed between the discharge port and the fan. The plurality of vanes may include a pair of first vanes spaced apart from each other and a plurality of second vanes arranged between the pair of first vanes. The pair of first vanes may include at least one communication hole formed in a penetrating manner.

A heat pump system of a vehicle is provided to adjust a temperature of a battery module by using a single chiller where a refrigerant and a coolant exchange heat, waste heat of the electrical component and the battery module are recollected, and a plurality of coolant flowing lines are formed by using a single valve according to a selected mode of the vehicle. The heat pump system includes: a valve; a first cooling apparatus; a second cooling apparatus; a third cooling apparatus; a first connection line; a second connection line; and a third connection line. The valve may be configured to operate such that one line among the first line, the second line, the third line, and the first connection line may be connected to another line or the same line, depending on a selected mode among the at least one mode.

The present invention relates to an integrated cooling module including a central manifold having a mounting space in which components may be mounted, refrigerant flow channels in which a refrigerant may flow, and communication holes for allowing the components and the refrigerant flow channels to communicate with one another, such that the components are integrated around the central manifold, thereof excluding hoses or pipes and achieving miniaturization and weight reduction of an entire cooling system.

To provide an outdoor unit for an air conditioning system for reducing workload in arranging the outdoor unit even when the size or the weight of the outdoor unit for the air conditioning system is increased, while enabling good arrangement also in a space having a small installation area or in a complicated or constrained space.SOLUTION: The outdoor unit for the air conditioning system includes: a first unit having a first casing storing part for housing part of components including a heat exchanger and an air fan out of a structural component group including a compressor for compressing refrigerant, the heat exchanger for making heat exchange of the refrigerant with outside air, and the air fan for blowing outside air to the heat exchanger; and a second unit having a second casing for housing the remaining component including the compressor of the structural component group. The first casing and the second casing are constructed to be freely joined to and separated from each other. The outdoor unit is driven both in a joined state in which the first casing and the second casing are joined to each other and in a separated state in which the first casing and the second casing are separated from each other.SELECTED DRAWING: Figure 1

The variable-frequency heat recovery system comprises a compressor unit, three heat exchangers, a variable-frequency driving module and a liquid storage device, the compressor unit can be connected with any two heat exchangers to form a refrigerant circulation loop, and an inlet pipe of the liquid storage device is connected to the outlet side of a condenser of the refrigerant circulation loop; the variable frequency driving module is provided with a heat dissipation pipeline, and the heat dissipation pipeline is connected with an inlet pipe of the liquid storage device in series so that refrigerants conveyed to the liquid storage device can pass through the heat dissipation pipeline. According to the heat recovery system, the pipeline connecting structure in the system is designed, the refrigerant before throttling is adopted to cool the variable frequency driving module, the cooling effect of the variable frequency driving module in different modes is ensured, and the reliability of the heat recovery system is improved.

A heat pump system for a vehicle may efficiently adjust the temperature of heating elements by using a chiller where a refrigerant and a coolant exchange heat. At the same time, the heat pump system may efficiently perform cooling and heating of a rear seat by using a rear heating, ventilation, and air conditioning (HVAC) module provided with a heat-exchanger.

A ventilation system includes: a housing including a first inlet drawing outdoor into the housing, a second inlet drawing room air into the housing, a first outlet discharging outdoor air into an indoor space, and a second outlet discharging room air to an outdoor space; a total heat exchanger exchanging heat between the outdoor air and the room air; a first heat exchanger between the first inlet and the total heat exchanger; a second heat exchanger between the first inlet and the first heat exchanger; a compressor supplying a refrigerant to the first heat exchanger and the second heat exchanger; a four-way valve switching a flow direction of the refrigerant; a first expansion device at an inlet of the first heat exchanger expanding the refrigerant; a second expansion device between the first heat exchanger and the second heat exchanger and expanding the refrigerant; and at least one processor.

A heat pump system for a vehicle is configured by including a valve, a first cooling apparatus, a second cooling apparatus, and a flow control line, to be configured for adjusting a temperature of a battery module by use of a single chiller where a refrigerant and a coolant are heat-exchanged, selectively recollecting waste heat of the electrical component and the battery module and using the same for heating of the vehicle interior, and forming a plurality of coolant flowing lines by a single valve according to selected mode of the vehicle.

Disclosed is a method for defrosting a thermal regulation circuit for a vehicle, in particular for a motor vehicle, the thermal regulation circuit being provided with a refrigerant circulation loop comprising a first heat exchanger (2), susceptible to frosting, as well as second and third exchangers (4, 6), the second and third exchangers (4, 6) being intended to exchange heat between the refrigerant and a heat transfer fluid, the loop further comprising a bottle (12) for storing a part of the refrigerant, the method comprising a step, referred to as defrosting, of circulating the refrigerant successively in the second heat exchanger (4), the bottle (12) and then the first and third exchangers (2, 6), with cooling of the refrigerant in the first and second exchangers (2, 4) and heating of the refrigerant in the third exchanger (6).

A heat pump system for a vehicle may be capable of improving the overall efficiency of the system as well as simplifying the system. This may be achieved by adjusting the temperature of a battery module using a single chiller where the refrigerant and the coolant exchange heat, and by recollecting waste heat of the electrical components and the battery module and using it for heating the vehicle. Additionally, the overall efficiency of the system may be achieved by forming a plurality of coolant flowing lines by a single valve according to a selected mode of the vehicle.

The invention discloses a twisting clamping refrigerating and heating device with cold and hot end separation and work recovery functions. The twisting clamping refrigerating and heating device comprises a stator module, a rotor module and a heat exchange module. The stator module comprises an inner gear and an outer gear, and teeth are arranged on partial edges of the inner gear and the outer gear. The rotor module comprises a torsion clamping refrigerant and a loading gear; the heat exchange module comprises an inner cylinder and an outer cylinder. And the loading gear revolves to drive the torsion clamping refrigerant to change the heat exchange position, and rotates to drive the torsion clamping refrigerant to be loaded and unloaded. When the loading gear is meshed with the inner gear, the loading gear rotates in the forward direction, and the torsion clamping refrigerant generates heat due to loading; when the loading gear is meshed with the outer gear, the loading gear rotates reversely, and the torsion clamping refrigerant absorbs heat due to unloading. According to the device, a heat exchange area is effectively separated, the problem of mutual interference of cold and heat is avoided, and the heat exchange efficiency and power are greatly improved; the resilience force generated when the torsion clamping refrigerant is unloaded is transmitted to the loading area, auxiliary power is provided for the loading process, recycling of work is achieved, and the energy utilization efficiency is improved.

The refrigerator comprises a refrigerator body, a door body is arranged at an opening of the refrigerator body, and at least one storage chamber is arranged in the refrigerator body and used for storing articles; a compressor for performing compressor and circulation of a refrigerant; the chamber temperature sensor is used for collecting the chamber temperature of the storage chamber; the environment temperature sensor is used for collecting the indoor environment temperature; a controller; the controller is configured to obtain the chamber temperature, the environment temperature and the current set temperature; constructing a feature vector according to the compartment temperature, the environment temperature and the current set temperature; inputting the feature vector into a pre-trained neural network model for calculation to obtain working frequency output; and controlling the compressor to operate at the working frequency. The working frequency of the refrigerator can be accurately calculated, and the energy consumption of household appliance operation is reduced.

An embodiment thermal management system for a vehicle includes a compressor on a first refrigerant line that compresses a refrigerant circulated therein, an external condenser on the first refrigerant line downstream of the compressor that releases heat of the refrigerant, a front evaporator on the first refrigerant line downstream of the external condenser that evaporates the refrigerant, a second refrigerant line connected to the first refrigerant line that allows the refrigerant to be introduced thereinto and then to be discharged upstream of the compressor, a rear evaporator on the second refrigerant line that selectively releases heat of the refrigerant, a first flow control valve on the first refrigerant line that allows the refrigerant to be introduced into the rear evaporator or the external condenser, and a second flow control valve on the second refrigerant line that allows the refrigerant to be introduced into the compressor or the external condenser.

A heat pump system for a vehicle may include an ejector configured to increase the pressure of the introduced refrigerant and discharge the refrigerant with the increased pressure to increase the pressure and flow amount of the refrigerant, thereby being capable of decreasing the refrigerant load of the compressor by reducing the compression ratio of the compressor, and reducing the cooling load and improving the cooling performance.

An improved heat pump including an integrated system for the management of refrigerant charge is provided. The integrated system actively adjusts charge allocation and thereby optimizes operational efficiencies in all modes of operation. In one embodiment, the integrated system includes three four-way valves, two expansion valves, two one-way check valves, and a suction line accumulator to optimize charge allocation. The four-way valves dictate the mode switch and refrigerant flow directions, and the expansion valves automatically allocate refrigerant mass in active components and store excess charge in an idle heat exchanger and suction line accumulator by controlling the compressor discharge pressure (equivalent to controlling condenser subcooling degree) as a function of the entering air and water temperatures. The integrated system provides seven working modes and is uniquely suited for spacing cooling, spacing heating, and water heating in both residential and commercial applications.

The utility model discloses a heat management integrated module mounting structure which comprises an agent side runner plate and a water side runner plate, a plurality of refrigerant channels are formed in the agent side runner plate, the outer surface of the agent side runner plate comprises a first mounting surface and a first connecting surface which are opposite in direction, the first mounting surface is provided with a plurality of agent side runner connectors, and the agent side runner connectors are connected with the first connecting surface. The plurality of refrigerant side runner interfaces are communicated with the plurality of refrigerant channels; a plurality of cooling liquid channels are formed in the water side flow channel plate, the outer surface of the water side flow channel plate comprises a second mounting surface and a second connecting surface which are opposite in direction, the second mounting surface is provided with a plurality of first water side flow channel connectors, and the first water side flow channel connectors communicate with the cooling liquid channels; and the second connecting surface is opposite to the first connecting surface and is fixedly connected with the first connecting surface. The utility model further discloses a vehicle with the same. The space utilization rate of the heat management system can be optimized, the flow resistance and heat loss of the system can be reduced, and the assembly convenience of the heat management component and the heat management object can be effectively improved.

The embodiment of the invention provides a compressor performance evaluation method and device, electronic equipment and a storage medium, and belongs to the technical field of refrigeration. The method comprises the following steps: constructing a thermodynamic cycle flow of the compressor under each preset condition according to a compression process of the compressor under a plurality of preset conditions; for each preset condition, based on the thermodynamic cycle flow of the compressor under the preset condition, a mathematical model of the compressor under the preset condition is constructed, and the mathematical model comprises a plurality of target performance parameters used for evaluating the performance of the compressor; fitting the mathematical model of the compressor under the preset condition with the thermophysical parameters of the refrigerant of the compressor to obtain the value of each target performance parameter of the compressor under the preset condition; and performing performance comparison evaluation on the values of the multiple target performance parameters of the compressor under each preset condition to obtain an evaluation result. According to the embodiment of the invention, the compressor performance can be quantitatively evaluated.

An electrostatic chuck capable of suppressing variations in the in-plane temperature distribution of a substrate during processing. [Solution] An electrostatic chuck 10 includes a dielectric substrate 100 and a base plate 200 supporting the dielectric substrate 100. The base plate 200 is formed with a coolant flow path 260 through which a coolant passes, and a through hole 230. In top view, the coolant flow path 260 has a branching portion 263 at which the coolant flow path 260 branches into a first flow path 261 and a second flow path 262, and a junction portion 264 at which the first flow path 261 and the second flow path 262 join again. The through hole 230 is formed to penetrate a portion of the base plate 200 between the first flow path 261 and the second flow path 262.

A heat pump system for a vehicle is configured by including a valve, a first cooling apparatus, a second cooling apparatus, and a flow control line, to be configured for adjusting a temperature of a battery module by use of a single chiller where a refrigerant and a coolant are heat-exchanged, selectively recollecting waste heat of the electrical component and the battery module and using the same for heating of the vehicle interior, and forming a plurality of coolant flowing lines by a single valve according to selected mode of the vehicle.

A heat pump system for a vehicle is configured to selectively exchange heat between coolant and the thermal energy generated from refrigerant at the time of condensation and evaporation of the refrigerant. The heat pump system heats the vehicle interior using the heat-exchanged high-temperature coolant and improves the heating efficiency of the vehicle by selectively using the ambient air heat, the waste heat of electrical components, and the waste heat of the battery module, at the time of heating the vehicle interior, thereby increasing the overall travel distance of the vehicle by efficiently adjusting the temperature of a battery module for an optimal performance of the battery module.

A dehumidifier is provided that may include a housing including a base, a case disposed on the base, and a top cover that covers an upper end of the case; a dehumidification module provided inside of the housing; and a handle mounted inside of the housing. The dehumidification module may include a compressor that compresses a refrigerant; a fan module; a condenser located at an inlet side of the fan module to condense the refrigerant that has passed through the compressor; an expansion valve that changes a phase of the refrigerant passing through the condenser; and an evaporator located at a rear side the condenser to evaporate the refrigerant that has passed through the expansion valve. The handle may include a front cover; a back cover coupled to a rear side of the front cover; a lifting guide accommodated in a space defined by the front cover and the back cover; a handle body coupled to an upper end of the lifting guide; and a lifting member that provide automatic raising of the handle body.

A system and method for liquefying a hydrogen gas feed stream uses a pre-cooling refrigerant for pre-cooling the feed stream, where the pre-cooling refrigerant is compressed, cooled and then separated to provide high pressure mixed refrigerant vapor and liquid streams. The high pressure vapor stream is cooled and directed to a cold vapor separator where cold separator liquid and vapor streams are formed. The cold separator vapor stream is cooled and expanded to provide a pre-cool refrigeration stream in a heat exchanger system. The high pressure pre-cooling refrigerant liquid and cold separator liquid streams are cooled and expanded and directed to the pre-cool refrigeration stream. A high pressure primary refrigerant steam, after compression and cooling, is further cooled in the heat exchanger system and then expanded using warm and cold expanders, with the resulting expanded primary refrigerant streams used to liquefy the pre-cooled hydrogen feed stream via heat exchange in the heat exchanger system.

A refrigeration cycle device includes: a compressor; a heat radiating unit that causes refrigerant to heat air supplied to a space inside a vehicle cabin; a decompression unit that decompresses the refrigerant; an outside air heat absorbing unit that causes the refrigerant to absorb heat from outside air; a waste heat absorbing unit that causes the refrigerant to absorb waste heat of a waste heat device; a shutter that opens and closes a passage for the outside air introduced into the outside air heat absorbing unit; and a control unit that closes the shutter when it is determined that an amount of waste heat of the waste heat device is larger than an amount of heat absorbed by the refrigerant in the outside air heat absorbing unit and the waste heat absorbing unit.

The invention provides an intelligent adjustment method for distributed air treatment equipment, and belongs to the technical field of air treatment equipment, and the method comprises the steps: inputting a personnel distribution image into an airflow field reconstruction model based on a graph neural network, outputting three-dimensional space flow field distribution data, calculating a personnel intensity index, and predicting an average thermal sensation index value; an air supply adjustment double-layer game model is established based on the data, the air supply angle and the air supply speed of an electric side supply nozzle and the air supply quantity of a lower air supply outlet are solved, an actuator is controlled to adjust air supply parameters, and the target air outlet temperature and the refrigerant flow of the heat exchanger are calculated through a thermodynamic entropy production minimization heat exchange optimization algorithm; and feedback correction is performed according to the actually predicted average thermal sensation index deviation to form closed-loop control, so that the technical problem that the distributed air treatment equipment is difficult to adjust the air supply parameters in real time according to the personnel distribution dynamic change so as to ensure the thermal comfort and the energy efficiency at the same time is solved.

A heat pump system for a vehicle may efficiently adjust the temperature of heating elements by using a chiller where a refrigerant and a coolant exchange heat. At the same time, the heat pump system may efficiently perform cooling and heating of a rear seat by using a rear heating, ventilation, and air conditioning (HVAC) module provided with a heat-exchanger.

The invention discloses a refrigerator and a control method thereof, relates to the technical field of refrigerators, and aims to solve the problem of high energy consumption of a single-system refrigerator in the prior art. The refrigerator comprises a refrigerating system, a first temperature sensor, a second temperature sensor and a controller. The refrigerating system comprises a compressor, a first condenser, a throttling device, an evaporator and an air return pipe which are sequentially communicated through pipelines to form a circulation loop of refrigerants. The refrigerating system further comprises a condensate fan, and the condensate fan is used for blowing air to the first condenser. The first temperature sensor is arranged at an outlet of the air return pipe and used for detecting the outlet temperature of the air return pipe. The second temperature sensor is arranged outside the refrigerator and used for detecting the environment temperature outside the refrigerator; the controller is configured to obtain the current outlet temperature of the air return pipe and the current environment temperature outside the refrigerator and calculate the current temperature difference between the current outlet temperature and the current environment temperature. Adjusting the rotating speed of the condensate fan according to the current temperature difference. The refrigerator is used for storing food.