5358results about "Compression machines with reversible cycle" patented technology

The invention provides an air source heat pump heating method and system, and relates to the technical field of heat pump system thermal control, and the method comprises the steps: collecting evaporator surface frost layer thickness, environment temperature and humidity parameters in real time, inputting the parameters to a pre-trained neural network algorithm model, and identifying a frosting rate by analyzing a multi-factor nonlinear relation; predicting a future frosting development trend, and outputting frosting thickness increase prediction and severity degree results; and according to the frosting thickness increase prediction and the severity degree result, reverse circulation defrosting is started in advance when the frost layer does not reach the critical thickness, and optimal control over the defrosting process is achieved by adjusting the opening degree of the four-way valve and the rotating speed of the draught fan, so that the system state after defrosting is obtained. The energy efficiency of the system is improved, and the heating comfort is optimized.

An air-conditioning apparatus includes: an outdoor unit including a compressor and an outdoor heat exchanger, and configured to generate cooling energy or heating energy; an indoor unit including an indoor heat exchanger, and configured to perform an air-conditioning operation with the cooling energy or the heating energy that is generated by the outdoor unit; a refrigerant pipe provided between the outdoor unit and the indoor unit, and forming a refrigerant circuit in which refrigerant circulates; and a shut-off valve provided at the refrigerant pipe, and configured to be closed when a refrigerant leak is detected. The shut-off valve includes a service port communicating with the refrigerant pipe.

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.

Methods and related systems for controlling indoor relative humidity include (a) determining a target dew point temperature based on desired indoor conditions for the indoor space, and (b) determining an initial dew point temperature based on an initial set of current indoor conditions of the indoor space. The method includes (c) determining a target coil temperature of a coil of an indoor heat exchanger of the climate control system based on the target dew point temperature and the initial dew point temperature, and (d) adjusting a speed of air flowing across the coil or a speed of a compressor of the climate control system after (c) based on the target coil temperature to reduce a difference between a coil temperature of the coil and the target coil temperature.

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 an air conditioning system, which belongs to the technical field of air conditioners and comprises an outdoor heat exchanger, a compressor, a first expansion valve, a four-way valve, a first heat exchanger, a water tank and a second heat exchanger, the outdoor heat exchanger is used for exchanging heat with outdoor air; the compressor is used for driving a refrigerant to flow; the first expansion valve is used for throttling a refrigerant passing through the first expansion valve; the four-way valve is used for switching the flow direction of a refrigerant; the first heat exchanger is used for exchanging heat with indoor air; the first heat exchanger, the compressor, the first expansion valve and the outdoor heat exchanger form a first refrigerant circulation loop through a pipeline; the second heat exchanger is used for exchanging heat with water in the water tank; the second heat exchanger, the compressor, the first expansion valve and the outdoor heat exchanger form a second refrigerant circulation loop through a pipeline; when the first heat exchanger is an evaporator, the compressor drives a part of refrigerant to flow into the first heat exchanger after flowing through the outdoor heat exchanger and the first expansion valve for throttling; the compressor drives the other part of refrigerant to flow into the first heat exchanger after flowing through the second heat exchanger; and the refrigerant flowing into the first heat exchanger flows back to the compressor.

A multi-split air-conditioning system, a fault positioning method, and a fault diagnosis model training method are provided. The multi-split air-conditioning system includes an outdoor unit, a plurality of indoor units, a plurality of electronic expansion valves, and a controller. The controller is configured to: obtain feature data of each of the plurality of indoor units in a case where an electronic expansion valve in the multi-split air-conditioning system is faulty, the feature data including a temperature difference between a temperature value of a liquid pipe correspondingly connected to the indoor unit and a temperature value of an air pipe correspondingly connected to the indoor unit; determine an abnormal indoor unit in the plurality of indoor units according to the feature data of each of the plurality of indoor units; and determine the electronic expansion valve corresponding to the abnormal indoor unit as a faulty electronic expansion valve.

The invention discloses a four-way valve assembly, a heating and ventilation equipment outdoor unit and heating and ventilation equipment, and relates to the technical field of heating and ventilation equipment. The four-way valve assembly comprises a valve body, a plurality of electric appliance parts and a switching part, the plurality of electric appliance parts are in telecommunication connection with the switching part through a first line, and then the switching part is in telecommunication connection with the control device through a second line, so that telecommunication connection between the plurality of electric appliance parts and the control device is achieved. Compared with an original mode that a plurality of electric appliance parts are in one-to-one telecommunication connection with the control device through a plurality of circuits, the complexity of the circuits can be reduced, so that the internal space of a machine body of the outdoor unit of the heating and ventilation equipment is saved, and the size and the production cost of the machine body are reduced.

The invention provides a constant-heating defrosting system of a heat recovery air conditioner and a defrosting control method and device. According to the system, a compressor, a first electromagnetic valve, a water tank, a first expansion valve, a first one-way valve, a second electromagnetic valve, an outdoor heat exchanger and a four-way valve are connected to form a first heating loop; a compressor, a first electromagnetic valve, a water tank, a first expansion valve, a first one-way valve, a third electromagnetic valve, an energy storage water tank, a fourth electromagnetic valve and a four-way valve are connected to form a first defrosting loop. A compressor, a fifth electromagnetic valve, a second one-way valve, an outdoor heat exchanger and a four-way valve are connected to form a second defrosting loop; and the first heating loop, the first defrosting loop and the second defrosting loop form a single heating water defrosting loop. The problem that in the prior art, in the defrosting process, the comfort experience of a user is affected due to the fact that an air conditioner does not conduct heating is solved.

Examples of the present disclosure relate to systems and methods for providing hot water for a hot water heater and heating capacity for a climate control system by utilizing a Stirling heat pump system. The Stirling heat pump may be partially integrated into an indoor unit of the climate control system and a hot water heater. An additional indoor heat exchanger may receive heating fluid from the Stirling heat pump system to provide heating capacity in addition to another indoor heat exchanger of the climate control system. Further, the heating fluid circuit of the Stirling heat pump system may be partially integrated into a hot water tank for heating water. A controller may direct the flow of heating fluid from the Stirling heat pump to the hot water tank and / or the climate control system based on a request for heating.

A hybrid heat pump system comprising a heat pump loop integrated with a hydronic loop. The hybrid heat pump system offers multiple modes of operation to provide increased versatility and improved performance. Each of the loops can operate independently. In addition, the loops can operate in conjunction with each other in both heating and cooling modes. Still further, the hydronic loop can provide a reheat function when the heat pump loop is operating in the cooling mode to provide improved dehumidification of the air delivered to the conditioned space. The heat pump loop may include a hot gas bypass functionality for capacity control and / or freeze protection. The hydronic heat exchanger and the space heat exchanger of the heat pump loop may be combined in a compact single slab construction with a slit fin preventing cross-conduction between the heat exchanger sections.

Thermal management systems include a vapor cycle and a liquid cycle sharing a common working fluid. The vapor cycle includes, along a vapor cycle flow path, a compressor and a condenser. The liquid cycle includes, along a liquid cycle flow path, a fluid driver, a load, a regulator valve, and a phase change material heat exchanger. A cold sink is thermally coupled to a heat load. A separator is configured to separate liquid and vapor portions of the working fluid and direct the liquid into the liquid cycle and the vapor into the vapor cycle. The separator is part of both the vapor cycle and the liquid cycle. The regulator valve controls a temperature of the working fluid within the liquid cycle at a location upstream of the phase change material heat exchanger to control a mode of operation of the phase change material heat exchanger.

An air-conditioning apparatus includes configured to, during a heating-defrosting operation mode in which one of a first outdoor heat exchanger and a second outdoor heat exchanger connected in parallel with each other is defrosted as a target to be defrosted, compare a first condensing temperature obtained when the target to be defrosted is switched from one to the other with a second condensing temperature obtained when a normal heating operation mode in which the first outdoor heat exchanger and the second outdoor heat exchanger operate as evaporators is switched to the heating-defrosting operation mode, reduce, when the first condensing temperature is less than the second condensing temperature, an opening degree of a flow control device smaller than an initial opening degree, and increase, when the first condensing temperature is greater than the second condensing temperature, the opening degree larger than the initial opening degree.

The embodiment of the invention discloses a liquid water source collecting device, an air conditioner, a control method and related devices.The liquid water source collecting device comprises a liquid collecting assembly, a liquid enriching assembly, a first pipeline assembly and a second pipeline assembly, in the using process, the first pipeline assembly is used for supplying air to a moisture absorbing and discharging part, and the second pipeline assembly is used for supplying air to a moisture absorbing and discharging part; the moisture absorption and removal part captures water vapor and water vapor in the air, then the energy supply assembly can provide energy for the moisture absorption and removal part, the moisture absorption and removal part is promoted to release the water vapor, and the water vapor can be supplied to the liquid collection assembly through the second pipeline assembly to be stored. On the basis of the liquid water source collecting device provided by the embodiment of the invention, liquid water can be automatically supplemented into the liquid collecting assembly by utilizing water vapor and water vapor in the air, so that a user does not need to supplement water or the water supplementing frequency of the user can be greatly reduced, the water using convenience of an electric appliance can be guaranteed, and the user experience is improved.

An air conditioner includes a shutoff unit to shut off a flow of a refrigerant in refrigerant piping connecting an outdoor unit and an indoor unit together, a power storage unit to supply power to the shutoff unit in a case where supply of power from an external power source is shut off, a refrigerant leakage detection unit to detect a refrigerant leakage, and a power source shutoff detection unit to detect that the supply of power from the external power source is shut off. The shutoff unit includes a shutoff valve driven by a motor that shuts off the flow of the refrigerant and a valve control unit which controls an action of the shutoff valve. In a case where the refrigerant leakage is detected together with a power shutoff, the valve control unit blocks the shutoff valve and increases an action speed of the shutoff valve.

The embodiment of the invention provides an air conditioning system and a control method thereof, relates to the technical field of air conditioners, and aims at improving the recovery rate of leaked refrigerants and improving safety. The air conditioning system includes: a refrigerant circulation loop; one of the outdoor heat exchanger and the indoor heat exchanger works as a condenser, the other one works as an evaporator, the indoor heat exchanger is connected with the outdoor heat exchanger through a first refrigerant pipeline, and the indoor heat exchanger is connected with the four-way valve through a second refrigerant pipeline; one end of the first bypass branch is connected with the gas-liquid separator, and the other end of the first bypass branch is connected with the outdoor heat exchanger; the controller is configured to obtain the refrigerant charge quantity after refrigerant leakage is detected; and under the condition that the refrigerant charging amount is larger than the preset charging amount, the air conditioning system is controlled to execute first refrigerant recycling operation, so that the first bypass branch is conducted.

The invention relates to the technical field of air conditioners, particularly provides an air conditioning system and a control method thereof, and aims to solve the problems that condensation is easily generated and the temperature is too high to facilitate heat dissipation in an existing refrigerant heat dissipation mode. In order to achieve the purpose, the air conditioning system comprises an outdoor heat exchanger, a control valve, a refrigerant radiator, a throttling element and an indoor heat exchanger which are sequentially connected. The refrigerant radiator is used for radiating a driving module of the air conditioning system; the air conditioning system further comprises a first temperature detection piece which is arranged on the side, close to the control valve, of the refrigerant radiator and used for detecting the temperature of the refrigerant flowing to the refrigerant radiator or flowing out of the refrigerant radiator. The opening degree of the control valve is adjusted in the refrigeration mode, the opening degree of the throttling element is adjusted in the heating mode, and the temperature of the throttling element and the control valve is controlled in the defrosting mode, so that the temperature is higher than the dew point temperature and lower than the temperature of the driving module; therefore, the driving module can be cooled, and condensation can be avoided.

The utility model provides an air conditioner and hot water integrated system with temperature control and dehumidification functions, which comprises a compressor, an outdoor heat exchanger, a first indoor heat exchanger, a second indoor heat exchanger, a water tank and a liquid storage device, the other end of the second indoor heat exchanger communicates with one end of the first indoor heat exchanger, and the other end of the outdoor heat exchanger, the other end of the first indoor heat exchanger and the other end of the water tank communicate with the interior of the liquid storage device. The air suction end of the compressor can communicate with one end of the outdoor heat exchanger or one end of the second indoor heat exchanger or one end of the water tank. According to the utility model, the modes of refrigeration and water heating, heating and water heating and dehumidification and water heating can be realized at the same time, the system can also adapt to the refrigerant circulation amount in different modes, the problem of high power consumption is solved, the problem that the requirement of comfort cannot be met is solved, and the system runs efficiently.

The present application provides an air conditioner control method and apparatus, a multi-split air conditioner, and a storage medium. According to the present application, when the multi-split air conditioner has a refrigeration requirement and a water heating requirement at the same time, mode determination is performed on the basis of a water tank temperature and a heating energy requirement of a heating water tank, and a total energy requirement of all air conditioner indoor units that are acquired, so as to determine a target heat recovery mode of the multi-split air conditioner, and then communication states between reversing apparatuses and throttling elements are adjusted on the basis of the target heat recovery mode.

The utility model discloses a cascade heat pump system which comprises a first heat exchanger, a second heat exchanger, a third heat exchanger, a fourth heat exchanger, a first compressor and a second compressor. The first heat exchanger is arranged in an outdoor environment and exchanges heat through an outdoor fan; the second heat exchanger comprises a first passage and a second passage and is used for heat exchange between a refrigerant in the first passage and a refrigerant in the second passage; the first compressor, the first heat exchanger and the first passage form a first cycle; the third heat exchanger exchanges heat with the liquid heat exchange medium; the second compressor, the second passage and the third heat exchanger form a second cycle; the fourth heat exchanger exchanges heat with the liquid heat exchange medium and forms a third cycle with the first heat exchanger and the first compressor; the first cycle and the second cycle are in linkage heating operation or the third cycle is in linkage operation; and the third cycle can be used for refrigerating or heating. According to the utility model, high-efficiency operation and high-efficiency defrosting of the system are realized when the compression ratio is medium and small, the power of an outdoor fan is not increased, and energy and cost are saved.

Provided is an air conditioner. Aluminum hydroxide may fly into a room. An air conditioner (1) is provided with an indoor unit (2) and an outdoor unit (3). The indoor unit (2) includes a first heat exchanger (20). The outdoor unit (3) includes a second heat exchanger (30). The first heat exchanger (20) has first flat tubes (21) and first fins (22). The first fins (22) are joined to the first flat tubes (21). The second heat exchanger (30) has second flat tubes (31) and second fins (32). The second fins (32) are joined to the second flat tubes (31). The potential difference between the first fin (22) and the first flat tube (21) is smaller than the potential difference between the second fin (32) and the second flat tube (31).

A ventilation system including a ventilator; and an outdoor unit, wherein the ventilator includes a housing including a first intake, a second intake, a first outlet and a second outlet, a plurality of dampers to change flow paths of air flowing through the housing, first and second air blowers, a heat exchanger in the housing, and a processor to control the dampers and first and second air blowers to form a first flow path in which outside air flows through the heat exchanger, or form a second flow path in which room air flows through the heat exchanger, to thereby form a flow path in the ventilator, while air flows through the flow path, control the outdoor unit to form frost on the heat exchanger, and control the outdoor unit to stop operating based on a preset frosting termination condition so that the frost melts to clean the heat exchanger.

The utility model provides a heat exchanger, a heat exchange system and an air conditioner, the heat exchanger comprises a heat exchanger body, a plurality of heat exchange flow channels, a plurality of heat exchange pipes and a plurality of heat exchange pipes, the first heat exchange flow path communicates with part of the heat exchange flow channels, and the first heat exchange flow path is provided with a first flow inlet; the second heat exchange flow path communicates with the other part of the heat exchange flow paths, and the second heat exchange flow path is provided with a second flow inlet; the included angle is formed between the flow direction of the heat exchange medium in the first heat exchange flow path and the flow direction of the heat exchange medium in the second heat exchange flow path, the heat exchange efficiency of the heat exchanger is improved, and the problem that in the prior art, the heat exchange efficiency of a heat exchange pipeline is low is solved.

The present application relates to the technical field of air conditioners, and particularly relates to an air conditioner control method and device, a multi-connected air conditioner and a storage medium, the present application determines the target heat recovery mode of the multi-connected air conditioner by judging the water tank temperature of the hot water tank, the heating energy demand and the total energy demand of each air conditioner indoor unit obtained when the multi-connected air conditioner simultaneously exists refrigeration and heating water demand, and then adjusts the communication state of the reversing device and the throttling element according to the target heat recovery mode, so as to achieve the purpose of simultaneously operating refrigeration and heating water by one heat pump system, and heat the water tank by the waste heat of air conditioner refrigeration, thereby avoiding the technical problem that the heating and heating water in the prior art multi-connected air conditioner are not simultaneously performed, and improving the use experience of the user.

The utility model discloses a heat pump device and an air conditioning system, and relates to the technical field of heat exchange. The air conditioner comprises an outdoor assembly, an inner machine assembly, a liquid inlet valve group and a liquid outlet valve group. The liquid inlet of each outdoor assembly is communicated with the first liquid outlet of the inner unit assembly, and the liquid outlet of each outdoor assembly is communicated with the first liquid inlet of the inner unit assembly. And the liquid inlet valve group is communicated with the second liquid outlet of the inner machine assembly and the liquid inlet of each outdoor assembly. And the liquid outlet valve group is communicated with the second liquid inlet of the inner machine assembly and the liquid outlet of each outdoor assembly. Therefore, the conduction state of the liquid inlet valve set and the liquid outlet valve set can be adjusted through the refrigerating or heating mode of the indoor unit, and the function of independent refrigerating, independent heating or simultaneous refrigerating and heating in multiple areas can be achieved on the basis that a heat recovery module does not need to be additionally arranged. Therefore, the structural complexity of the heat pump device is reduced, and the product adaptability of the heat pump device is improved.

The utility model discloses a four-way valve assembly, a heating and ventilation equipment outdoor unit and heating and ventilation equipment, and relates to the technical field of heating and ventilation equipment. The four-way valve assembly comprises a valve body and a filtering device, the valve body comprises a main valve pipe and a first pipe joint, a second pipe joint and a third pipe joint which are connected to the main valve pipe, the first pipe joint is used for communicating with an exhaust port of the compressor, the second pipe joint is used for communicating with an air return port of the compressor, and the third pipe joint is used for communicating with the heat exchanger; the filtering device is installed on the third pipe connector and used for filtering the refrigerant flowing through the third pipe connector. The filtering device is directly installed on the third pipe connector, so that the filtering device can filter a refrigerant flowing through the third pipe connector, a middle pipeline between the filtering device and the third pipe connector is omitted, and therefore the machine body structure of the outdoor unit of the heating and ventilation equipment can be simplified to a certain degree, and the overall size of the machine body is reduced; and a certain production and manufacturing cost can be reduced.

The utility model discloses a multi-system water chilling unit which comprises at least two heat exchange systems, at least two waterway systems and a combined heat exchanger, and the heat exchange systems can be combined to form or respectively form an independent heat exchange circulation loop by switching the serial or parallel connection state and the opening or closing state of the combined heat exchanger; the water path system can be combined to form or respectively form an independent water circulation loop, so that the heating or refrigerating capacity of the unit is obviously increased; different heat exchange circulation loops are switched and controlled by adjusting refrigerant flowing paths between the multiple heat exchange systems and the combined heat exchanger, and different water circulation loops are switched and controlled by adjusting water medium flowing paths of the multiple water path systems. Therefore, after the water chilling unit is installed, different operation modes can be selected and switched according to different heat or cooling capacity requirements, hot water or cold water with the corresponding capacity and temperature is produced, the heating or cooling capacity of the unit is matched with the actual requirement, the whole equipment or part of elements do not need to be replaced, cost is low, and maintenance is convenient.

The invention relates to the technical field of heat pump heating equipment, and particularly discloses miniaturized heat pump heating equipment which comprises a shell, an air outlet assembly and a cooling assembly, the shell is provided with a cavity, an air outlet communicating with the cavity and the external environment is formed in the top of the shell, and the air outlet assembly is arranged on the upper portion of the shell and is opposite to the air outlet; the cooling assembly is used for driving fluid to flow from the cavity to the external environment, the cooling assembly is vertically arranged, the horizontal section is in an n shape, the cooling assembly is connected with the shell, the cavity communicates with the external environment, and the cooling assembly is used for absorbing heat through refrigerants so as to heat the refrigerants. The lateral air inlet and outlet heat pump has the effect of improving the problem that an existing lateral air inlet and outlet heat pump is low in heat exchange efficiency in a narrow space.

The utility model discloses air conditioning equipment, which is characterized in that a main machine is configured to regulate indoor air, a negative oxygen water ion emitting device is arranged on the main machine and comprises a mounting part, a rotating part, an emitting electrode and a driving part, the rotating part is rotationally arranged on the mounting part, and a second air duct is formed in the rotating part; the rotating part is provided with a second air outlet communicated with the second air duct, the rotating part is provided with a second air inlet communicated with the second air duct, the emission electrode is arranged in the second air duct and is configured to release ions to the indoor space, and the driving part is used for driving the rotating part to rotate so as to adjust the ion conveying direction. According to the scheme, the conveying direction of negative oxygen water ions can be adjusted, and the air sterilization and purification and human body health care effects are improved.

To shorten the time required for assembling a heat exchange section and a plate stack. A heat exchanger unit (150) includes a first heat exchange section (50), a second heat exchange section (55), and a plate structure (100). The first heat exchange section (50) includes a plurality of first fins (52) and a plurality of first heat transfer tubes (51). The second heat exchange section (55) includes a plurality of second fins (57) and a plurality of second heat transfer tubes (56). The plate structure (100) is joined to the first heat transfer tubes (51) and the second heat transfer tubes (56). Inside the plate structure (100), a first flow path (121) that connects the first heat transfer tubes (51) and a second flow path (122) that connects the second heat transfer tubes (56) are formed.