1738results about "Fluid circulation arrangement" patented technology

A flow direction control device of heating stream and cooling stream is prepared as connecting said device separately to the first heat exchange unit, the second heat exchange unit, air conditioner and compressor for controlling heated working fluid from the first heat exchange unit to be sent to air conditioner for being used as the first heat media or to be sent to the second heat exchanger for being condensed there then to send it to air conditioner for being used as the second cooling media in order to make air conditioner output hot and cold alternatively, enabling to set heating course on the first heat exchange unit for providing the third heat media out.

The utility model provides a high-power refrigerating and heating device, which belongs to the technical field of refrigerating and heating and comprises a power mechanism, a multi-linkage transmission mechanism and a plurality of solid elastic clamping heat regenerators. The multi-linkage transmission mechanism is provided with a power input end and a plurality of power output ends, and the power input end is connected with the power mechanism; and the plurality of solid elastic clamping heat regenerators are respectively connected with different power output ends on the multi-linkage transmission mechanism so as to refrigerate or heat under the driving of the power output ends. According to the multi-linkage transmission mechanism, a set of power mechanism can be utilized to drive a plurality of solid elastic clamping heat regenerators suitable for operation of elastic clamping materials to conduct refrigeration or heating, then the solid elastic clamping heat regenerators are gathered, and enough heating capacity or refrigerating capacity can be obtained; in this way, the problem that materials cannot bear the heat due to the fact that the solid elastic clamping heat regenerator is designed to be too large can be solved, enough heating capacity or refrigerating capacity can be provided, and the requirements in practical application are met.

The application discloses a heat management integrated module, a shunt component and a first heat exchanger connection, the first interface of the shunt component can be in communication with the second interface and the third interface at the same time; the throttling channel of the first heat exchanger has a throttling function, the first flow channel and the second flow channel are isolated from each other in the first heat exchanger, and the throttling channel and the first flow channel can be in communication; the second interface is in communication with the throttling channel, and the third interface can be in communication with the second flow channel. In the application, the shunt component has a shunt function, the first heat exchanger has a throttling channel capable of realizing a throttling function, when the heat management integrated module is in an operating state, two fluid streams shunted through the shunt component realize heat exchange in the first heat exchanger, the first heat exchanger integrates the throttling function and the heat exchange function, part of the pipeline can be shortened or cancelled, and thus the occupied space of the heat management integrated module can be reduced. The application also provides a heat management system capable of reducing the occupied space.

The refrigeration house condenser waste heat recovery energy-saving system comprises a refrigeration module, the refrigeration module is connected with a first heat energy recovery module, and the first heat energy recovery module is connected with a user side; the refrigeration module comprises a compressor, a first condenser, a first expansion valve and a first evaporator, the compressor is communicated with the first condenser, the first condenser is communicated with the first expansion valve, the first expansion valve is communicated with the first evaporator, and the first evaporator is communicated with the compressor; the first heat energy recovery module comprises a first water pump and a first adjusting valve connected with the first water pump in parallel, and the first adjusting valve and the first water pump are connected with a water supply source and communicate with the first condenser. The first condenser is connected with a second regulating valve, the second regulating valve is respectively communicated with one end port of a third regulating valve and one end port of a fourth regulating valve, the third regulating valve is communicated with the first condenser, and the fourth regulating valve is connected with a user side. The system improves the utilization rate of primary energy in the operation process of the refrigeration house.

To reduce heat exchangers having different functions from being thermally affected by each other, and to respond to a desired temperature requirement for a temperature adjustment target. Provided is a refrigerant unit 10 including a refrigerant circuit and a single support member 12 that collectively supports components of the refrigerant circuit. The refrigerant circuit includes a first heat exchanger 30 and second heat exchangers 41, 42 having different functions. The first heat exchanger is disposed between the plurality of the second heat exchangers. A distance from one side of the plurality of second heat exchangers to the first heat exchanger is greater than a distance from the other side of the plurality of second heat exchangers to the first heat exchanger.

[Problem] Reduction of the stirring resistance that arises in a motor in a coolant circulation system in which an oil-containing coolant circulates to cool and lubricate the motor.[Means of solution] A coolant circulation system 100 comprises: a motor 4 with a rotor 41, a stator 42, a rotating shaft 43 and plain bearings 44; a gas-liquid separator 12, which separates a coolant into CO2 and oil; a CO2 passage 22b, through which the CO2 separated by the gas-liquid separator is supplied to a gap between the rotor and the stator to cool the rotor and the stator; mixing channels 24a, through which a mixture of the CO2 and the oil, obtained by mixing the CO2 and the oil separated by the gas-liquid separator, is supplied to gaps between the rotating shaft and the plain bearings to lubricate the plain bearings; and mixing channels 24b, through which the CO2 supplied to the rotor and the stator from the CO2 channel 22b and the mixture of CO2 and oil supplied to the sliding bearings 44 from the mixing channels 24a are returned to the gas-liquid separator.

A vapor injection heat pump system and a method of operating the same are disclosed. The system includes a compressor, an indoor heat exchanger, a vapor injection module, an outdoor heat exchanger, and an evaporator and in which the module includes a first expansion unit, a gas-liquid separator, and a second expansion unit. The method includes performing control in a first heating mode which is a non-vapor injection heating mode or a second heating mode which is a vapor injection heating mode, wherein, in the operation of performing control, a refrigerant introduced into the module is controlled to expand in the first expansion unit, not expand after passing through the gas-liquid separator, and pass through the second expansion unit in the first heating mode, and the refrigerant introduced into the module is controlled to expand primarily in the first expansion unit.

The invention relates to a heat transfer system (10) with a heat source (14) and a heat sink (50), wherein the heat source (14) has a heat discharge arrangement (34) for heat discharge from the heat source (14) by means of a working fluid (12), wherein within the heat discharge arrangement (34) the working fluid (12) can be thermally coupled or coupled to the heat source (14), and wherein by means of the working fluid (12) the heat source (14) can be thermally coupled or coupled to the heat sink (50).A high and defined heat transfer over a large operating temperature range can be achieved by the heat transfer arrangement (34) comprising at least two stages arranged parallel in terms of flow, a first stage (36) and a second stage (42), for heat transfer from the heat source (14) to the working fluid (12), wherein the stages (36, 42) are designed such that they have a different thermal resistance between the heat source (14) and the working fluid (12).

The invention relates to a double-source geothermal system with a shallow buried pipe and a middle-deep geothermal well coupled in series, which comprises an underground heat exchange unit, a ground heat pump unit and a user side, and the underground heat exchange unit, the ground heat pump unit and the user side are matched with one another to provide two operation modes, namely a winter heat supply mode and a summer refrigeration mode. The gradient utilization mode of shallow preheating and deep heating is utilized, the temperature of the source side of the heat pump is remarkably increased, the occupied area of the buried pipe is reduced, and the service life of the deep well is prolonged; in addition, switching between a heat supply mode and a refrigeration mode can be conducted in different seasons, heat compensation is conducted on the stratum through summer waste heat through the heat pump, and the stratum attenuation rate is effectively delayed.

A cooling system includes a liquid loop, a vapor compression loop, and a heat exchanger in fluid communication with each of the liquid loop and the vapor compression cycle loop. The liquid loop includes a cold sink for cooling a heat load. The vapor compression cycle loop is fluidly coupled to the liquid loop by a separator, which is configured to separate a two-phase form of a working fluid received from the cold sink into a vapor form of the working fluid and a liquid form of the working fluid.

The utility model provides a carbon dioxide heat pump control cabinet self-cooling system which comprises a carbon dioxide heat pump loop which comprises a compression device, a cooling device, a throttling device and an evaporation device which are mutually connected through a first pipeline, carbon dioxide is cooled to a preset temperature area in the cooling device, and the cooling device is provided with a first inlet and a first outlet; the compression device comprises a second inlet and a second outlet. The carbon dioxide heat pump loop further comprises a first section located between the first outlet and the second inlet and a second section located between the second outlet and the first inlet. And the cooling loop comprises a control cabinet heat exchange part and a second pipeline, the control cabinet heat exchange part is connected between the first outlet and the second inlet through the second pipeline and connected with the first section in parallel, and the control cabinet heat exchange part is used for making contact with the control cabinet for heat exchange. Based on the working loop of the carbon dioxide heat pump, the cooling loop is added, and the control cabinet is effectively cooled by utilizing the high-efficiency heat exchange characteristic of the carbon dioxide heat pump.

The present application discloses a refrigerant switching device and a heating, ventilation and air conditioning system. The refrigerant switching device provided in embodiments of the present application comprises a housing, and a liquid pipe assembly and a gas pipe assembly that are arranged separately. The liquid pipe assembly and the gas pipe assembly are mounted in the housing. In a disassembling and assembling direction in which one of the gas pipe assembly and the liquid pipe assembly approaches or moves away from the other, the gas pipe assembly and the liquid pipe assembly do not interfere with each other.

[Problem] Provision of a coolant circulation system that supplies a gaseous coolant to an engine where the degree of superheat is dampened to a low value. [Means of solution] Coolant circulation system S that circulates a coolant R to cool an engine 20 in a vehicle, wherein a control device 40 assumes a degree of superheat d of the coolant R exiting from secondary heat exchangers 15a, 15b based on detection signals from sensors 30, wherein the control device 40 controls a flow rate in first expansion valves 14a, 14b such that the degree of superheat d is maintained within a predetermined range between a lower limit dt1, which is greater than zero, and an upper limit dt2, and the control device 40 supplies the coolant R from the secondary heat exchangers 15a, 15b to the engine 20 via a channel 3.

The application discloses a refrigeration system control method and device based on dryness physical benchmark. The method comprises the following steps: establishing a benchmark quantity of refrigerant, wherein the benchmark quantity Φ is only related to the physical property of the refrigerant and is irrelevant to system specific parameters such as pipeline length, charging quantity and heat exchanger area; acquiring the dryness of the condenser outlet in real time x ; taking the dryness x tending to 0 as a control target, and adjusting the total flow of the system so that the system approaches its inherent energy efficiency characteristic curve. The application also provides a float type device and an injection type device for realizing the method. The application promotes the dryness from a traditional measured quantity to an active physical benchmark, so that the refrigeration system automatically approaches the theoretical optimal state under various actual working conditions, and the energy efficiency is significantly improved, with an average COP improvement of 11.6% and a worst case improvement of 16.2%.

An assembly includes a fluid conditioning system including a cascade module and an active charge compensator integrated into the fluid conditioning system. The fluid conditioning system is transformable between a first mode and a second mode. In the first mode, the fluid conditioning system includes a first vapor compression loop and a second vapor compression loop. The first vapor compression loop and the second vapor compression loop are thermally coupled at the cascade module and the second vapor compression loop is fluidly separate from the first vapor compression loop. In the second mode, the fluid conditioning system includes a single vapor compression loop. The active charge compensator is operable to control a working fluid charge within the fluid conditioning system based on the mode of operation selected from the plurality of modes.

The utility model provides a work recovery multi-cylinder refrigerating and heating device, which belongs to the technical field of refrigerating and heating, and comprises a power mechanism, a multi-linkage transmission mechanism and a plurality of solid elastic clamping heat regenerators, the multi-linkage transmission mechanism comprises a mounting bracket, an eccentric wheel rod and a plurality of driving rods, and the mounting bracket and the solid elastic clamping heat regenerators are fixedly arranged relatively; the eccentric wheel rod is rotationally arranged on the mounting bracket and is connected with the power mechanism, a plurality of eccentric wheels are arranged on the eccentric wheel rod at intervals, and the plurality of eccentric wheels are arranged according to a non-zero phase angle; the driving rods are arranged on the mounting support in a sliding mode and correspond to the eccentric wheels respectively, one end of each driving rod abuts against the corresponding eccentric wheel, and the other end of each driving rod is connected with one solid elastic clamping heat regenerator so that power can be input to the solid elastic clamping heat regenerators under driving of the eccentric wheels. According to the utility model, the springback work of the solid elastic clamping heat regenerator can be recycled, so that the power mechanism can output power more stably, and the energy loss is reduced.

A combined heat exchanger, a heat exchange system, and an optimization method thereof are provided. The heat exchange system includes: an enhanced vapor injection compressor, a condenser, an expansion valve and an evaporator, which are located in a main circuit; wherein the heat exchange system further includes a first branch branched from the main circuit to an vapor injection port of the compressor at a branch point P downstream of the condenser, and a first heat exchange unit and a second heat exchange unit are further provided in the main circuit between the branch point P and the expansion valve; and wherein a refrigerant leaving the condenser is divided at the branch point P into a first portion passing through the first heat exchange unit and the second heat exchange unit from the main circuit, and a second portion passing through the first branch to the vapor injection port.

The utility model discloses a box body assembly and heat pump equipment, and belongs to the technical field of household appliances. Wherein the box body assembly comprises a chassis structure, a side plate and a top cover, and the side plate is arranged along the peripheral edge of the chassis structure and is connected with the chassis structure; the top cover is connected with the side plates, an inner cavity is defined by the top cover, the chassis structure and the side plates, and the top cover is provided with an air inlet and an air outlet; wherein the inner cavity is used for installing the first heat exchanger, the second heat exchanger, the compressor and the fan, the first heat exchanger divides the inner cavity into an air inlet cavity and an air outlet cavity, the air inlet cavity communicates with the air inlet, the air outlet cavity communicates with the air outlet, the second heat exchanger and the compressor are installed in the air inlet cavity, and the fan is installed in the air outlet cavity; the chassis structure, the side plates and the top cover are respectively provided with a heat preservation layer. According to the utility model, cold air in the inner cavity is separated from an indoor environment with relatively high temperature, so that the shell is prevented from being influenced by two kinds of air with relatively large temperature difference, and the possibility that condensed water is generated on the outer surface of the shell is further reduced.

A vapor injection heat pump system and an operation method is disclosed. The operation method includes a compressor, an indoor heat exchanger, a vapor injection module, an outdoor heat exchanger, and an evaporator includes an operation of performing control in one of a first heating mode which is a non-vapor injection heating mode in which a refrigerant introduced into the module is introduced into the outdoor heat exchanger and a second heating mode which is a vapor injection heating mode in which some of the refrigerant introduced into the vapor module is introduced into the compressor and the remaining refrigerant is introduced into the outdoor exchanger, wherein, in the operation of performing control, a flow of the refrigerant is maintained in the vapor injection module when the first heating mode is switched to the second heating mode or the second heating mode is switched to the first heating mode.

The invention discloses an evaporation pressure reference controller for a lithium bromide absorption refrigeration system. The evaporation pressure reference controller comprises a pressure detection unit, a reference unit, a comparison unit and an execution unit. The pressure detection unit detects absolute pressure in the evaporator in real time; the reference unit provides a reference signal of the target evaporation pressure; the comparison unit outputs a pressure deviation signal; and the execution unit adjusts the circulation volume of the lithium bromide solution so as to approach to the solution circulation volume under the full-load design working condition of the system, and the adjustment benchmark is the full-load design working condition of the system. The evaporation pressure serves as an absolute physical reference, the solution circulation amount is dynamically adjusted, the system is made to adapt to the heat source load, the concentration automatically avoids the crystallization line, and the functions of load monitoring, crystallization early warning, energy efficiency calculation and the like are provided. And the device is suitable for various low-grade heat source scenes such as hot water, steam and flue gas, can be used for new machine manufacturing and stock transformation, and reduces the equipment size and the manufacturing cost.

The refrigerating system comprises a compressor, an evaporative condenser, a gas-liquid separator, a heat regenerator, an evaporator, a heat recoverer, an energy storage device, a terrace heat exchanger, an oil separator, an oil cooler, a water pump, a temperature control valve, an electronic expansion valve, a three-way valve, a control device, a temperature sensor and a pressure sensor. The control device collects signals of compressor outlet and inlet pressure sensors and temperature sensors, evaporator outlet pressure sensors and temperature sensors, an oil return temperature sensor and a floor heat exchanger temperature sensor. Condensing pressure is adjusted by controlling starting and stopping of a condenser side fan and a water pump, and the opening degree of the three-way valve is controlled to enable the oil return temperature to be within a safe range. The evaporation temperature is maintained by adjusting the opening degree of an evaporator inlet electronic expansion valve. By monitoring the terrace temperature in the refrigeration house, the electromagnetic valve is controlled to adjust the refrigerant flow in the terrace heat exchanger to maintain the outlet temperature, and the energy storage device is intermittently put into the refrigeration house to improve the system energy efficiency.

The invention relates to the technical field of micro-channel cooling equipment, in particular to a micro-channel condensation system which comprises a micro-channel heat exchange core, an air ring, a flow guide air cone and a heat dissipation fan. The micro-channel heat exchange core comprises flat pipes internally provided with micro-channels, fins, a first current collector and a second current collector, the flat pipes form fan rings in the length direction of the flat pipes, and the fins are arranged between every two vertically adjacent flat pipes; the first current collector is connected with the first end of the heat exchange core body, the second current collector is connected with the second end of the heat exchange core body, the cooling fan is installed at one end of the air ring, and the air ring is installed at the top end of the micro-channel heat exchange core. The flow guide air cone is arranged in the center of the micro-channel heat exchange core. The micro-channel condenser system provided by the invention has better rigidity and reliability. The cylindrical structure is adopted, the flow guide air cone is arranged, the heat exchanger can conduct windward heat exchange in the whole area, the diameter of the cooling fan is minimum, and the better heat exchange efficiency is achieved.

A mixed mode modular cooling system can include two or more mixed mode refrigerant loops and plumbing to permit a working fluid to circulate through at least a portion of the loops. Each mixed mode refrigerant loop can include an evaporator, a condenser, a pump to pump a refrigerant through the evaporator and the condenser, and a compressor configured to compress the refrigerant between the evaporator and the condenser. As cooling demand varies, each mixed mode refrigerant loop can be brought online and operated in either compressed refrigerant mode or pumped refrigerant mode.

The utility model provides a top pressure power transmission mechanism and a refrigerating and heating device, and belongs to the technical field of transmission equipment. The jacking power transmission mechanism comprises a driving rod and a pressing head, and the jacking head is arranged at one end of the driving rod; the pressing head is provided with a bearing groove, and the jacking head can abut against the bottom of the bearing groove so that jacking power can be transmitted to the pressing head through the driving rod. The refrigerating and heating device comprises a power mechanism, the top pressure power transmission mechanism and a solid elastic clamping heat regenerator. The power mechanism is used for outputting power. The jacking power transmission mechanism is matched with the power mechanism so as to receive power output by the power mechanism; and the solid elastic clamping heat regenerator is connected with a pressure head of the jacking power transmission mechanism so as to refrigerate or heat under the driving of the pressure head. Under the working conditions of large bearing capacity and long-term abrasion, the conditions of fracture and failure cannot occur, and therefore stable transmission of jacking power can be achieved.

The invention discloses a regenerative cryogenic helium circulating refrigerating system which comprises a vacuum cold box (1), a circulating fan (2), a valve box (3) and a low-temperature vacuum hose (4), the circulating fan is connected with the valve box through a pipeline, the vacuum cold box is connected with the valve box through a connecting pipe, a cold box flange (11) is arranged at the top of the vacuum cold box, and the low-temperature vacuum hose (4) is arranged in the cold box flange. One end of the low-temperature vacuum hose is arranged on the cold box flange and penetrates into the cold box cavity, the other end of the low-temperature vacuum hose is connected with the user load, at least one refrigerating machine is arranged on the flange, the circulating fan is used for pumping helium into the valve box in a circulating mode, and after the helium is cooled through the vacuum cold box, the user load is cooled through the low-temperature vacuum hose. According to the system, cold energy regenerative heat recycling during air returning can be achieved, the heat exchange efficiency of the system can be remarkably improved through the innovative design of the coil pipe type heat exchanger and the cold head heat exchanger, low-temperature refrigeration with the minimum of 10K can be achieved under the condition that no external cold source such as liquid nitrogen exists, and a solution is provided for the frontier fields such as nuclear fusion and the superconducting technology.

The invention discloses a waste heat recovery heat pump with a heat storage device, and relates to the technical field of heat pumps, the waste heat recovery heat pump comprises a case, a waste heat recoverer is mounted in the case, a heat accumulator is arranged on the side surface of the waste heat recoverer, and a scrap scraper is mounted in the heat accumulator. According to the waste heat recovery heat pump with the heat storage device, the purposes of cleaning scale in real time and guiding water flow to increase the heat storage efficiency during use are achieved, the scrap scraper and the flow guiding component work cooperatively, the surfaces of related heat exchange components can be cleaned actively, scale attachment is reduced, the propeller can stir water flow, local water flow retention is avoided, and a scale layer is formed; the angle of the flow guide component can be flexibly adjusted, the flow guide component is matched with the flow dividing component to accurately adjust the flow direction and flow of a working medium, it is ensured that the working medium is evenly distributed in the heat exchange component, local overload or retention is avoided, and the non-return component avoids damage to circulation balance due to backflow of the working medium.

A manifold includes a channel housing including a first channel that allows a first cooling fluid to flow, and a second channel that allows a second cooling fluid to flow, in which, in the channel housing, heat is exchanged between the first cooling fluid that flows through the first channel and the second cooling fluid that flows through the second channel.

The utility model discloses a carbon dioxide internal defrosting system which comprises a carbon dioxide circulation loop and an internal defrosting liquid return pipeline, the carbon dioxide circulation loop and the internal defrosting liquid return pipeline are formed by connecting pipelines, the carbon dioxide circulation loop conducts compression refrigeration circulation, and the internal defrosting liquid return pipeline conducts low-temperature defrosting circulation. The internal defrosting liquid return pipeline further comprises a second electromagnetic valve, a third electromagnetic valve and a check valve on the basis of the carbon dioxide circulation loop, the second electromagnetic valve is arranged on the connecting pipeline and connected with the electronic expansion valve in parallel, and a liquid return pipeline connected with the carbon dioxide liquid storage device through the third electromagnetic valve and the check valve is arranged at an outlet of the low-temperature air cooler. The device does not consume electric energy, and is energy-saving and environment-friendly; no risk exists in long-time defrosting, and safety and reliability are achieved; and the defrosting time is short, the defrosting heating area is large, and the defrosting efficiency is high.

The utility model discloses heat pump equipment, and belongs to the technical field of household appliances. The heat pump equipment comprises a box body, a heat pump assembly, a fan, a pipeline assembly and an electric control box, the heat pump assembly, the fan, the pipeline assembly and the electric control box are installed in the box body, an inner cavity of the box body is divided into an air inlet cavity and an air outlet cavity through the first heat exchanger, the compressor, the second heat exchanger, the pipeline assembly and the electric control box are arranged in the air inlet cavity, and the fan is arranged in the air outlet cavity. The second heat exchanger is connected with the compressor and the first heat exchanger through a refrigerant pipeline to form a refrigerant circulation loop, the second heat exchanger is connected with the water inlet pipe and the water outlet pipe through water flow pipelines to form a water supply pipeline, and the electric control box can turn over to move into the air inlet cavity from the opening or move out of the air inlet cavity from the opening. And the electric control box is overturned around the rotating connection position, so that the compressor, the second heat exchanger, a refrigerant pipeline, a water flow pipeline, a water pump and other parts are conveniently overhauled, the electric control box does not need to be disassembled, and the overhauling efficiency is effectively improved.

The application provides an automobile air conditioner manifold assembly, which comprises a manifold, a plurality of slots are equidistantly formed in the manifold, and a drying pipe is installed on the manifold through fixing pieces, and the fixing pieces are at least two in number and are used for fixing the drying pipe on the manifold. When the filter bag is blocked by sundries for a long time, the refrigerant passing through the filter bag is hindered, the pressure in the drying pipe is increased, the first piston block is driven to move along the inside of the L-shaped pipe, the second piston block is driven to move upwards along the L-shaped pipe through the hydraulic oil transmission between the first piston block and the second piston block, the fixing rod on the top of the second piston block moves along the hollow rod until the squeeze control switch, the control switch starts the alarm in the automobile to give an alarm, and thus the excessive pressure in the manifold can be conveniently and timely prompted, and the refrigerant can be prevented from leaking due to the excessive pressure.