3728results 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.

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 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.

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 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.

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 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 present invention relates to a refrigerant circuit, in particular a refrigerant circuit for a heat pump, and to a heat pump for heating and cooling a building. The refrigerant circuit comprises a first heat exchanger (8) configured to function as an evaporator or as a condenser, and a second heat exchanger (7) also configured to function as a condenser or as an evaporator.The refrigerant circuit further comprises a compression section (90) located downstream of the first heat exchanger (8) or downstream of the second heat exchanger (7), an expansion section (20) located downstream of the second heat exchanger (8) or downstream of the first heat exchanger (7), a first directional control valve (3) configured to supply refrigerant to the expansion section (20) and to discharge refrigerant from the expansion section (20), and a second directional control valve (4) configured to supply refrigerant to the compression section (90) and to discharge refrigerant from the compression section (90).

The invention discloses a heat pump circulation system and a heat pump circulation control method. The heat pump circulating system comprises a compressor, a first condenser, a second condenser, an evaporator, an expansion valve, a first switch valve, a second switch valve and a third switch valve, and the compressor communicates with the first condenser through a first branch pipeline of a first pipeline and communicates with the second condenser through a second branch pipeline. The first condenser and the second condenser are connected in series through the second pipeline, the first switch valve is arranged on the first branch pipeline, the second switch valve is arranged on the second branch pipeline, and the third switch valve is arranged on the second pipeline. By controlling the on-off of the first switch valve, the second switch valve and the third switch valve, the heat pump circulation system has a primary heating mode in which only the second condenser participates in work and a secondary heating mode in which the first condenser and the second condenser work simultaneously, so that the heat exchange efficiency of the condensers is improved.

The invention discloses a compressed air energy storage underground chamber waste heat and waste cold utilization system which comprises a chamber structure, an inflation and deflation mechanism, a heat exchange mechanism and an energy recycling mechanism, a closed air storage cavity is formed in the chamber structure, and an air inlet and outlet communicated with the air storage cavity is formed in the chamber structure; the inflating and deflating mechanism comprises an air pipe; the heat exchange mechanism comprises a liquid storage tank and a heat exchange assembly, and heat conduction liquid is contained in the liquid storage tank. The device has the beneficial effects that through the uniform air distribution design of the air pipes, the uniformity of the inflation and deflation process is ensured, and the risk of concrete lining cracking caused by local temperature difference is reduced. Through cooperative work of the heat exchange mechanism and the energy recycling mechanism, waste heat generated in the inflation process and waste cold generated in the deflation process are effectively recycled and utilized, so that on one hand, energy waste is reduced, the overall energy efficiency of the system is improved, and on the other hand, the energy storage potential of the chamber can be improved.

The utility model relates to the field of cold and heat pump units, in particular to a multifunctional efficient defrosting evaporation cold and heat pump unit which comprises a compressor, and an outlet of the compressor is respectively connected with an inlet of a shell and tube heat exchanger and an inlet of an evaporation cold heat exchanger through a four-way reversing valve. An outlet of the evaporation cold heat exchanger is connected with an inlet of the compressor and an outlet of the shell-tube heat exchanger through electronic expansion valves. An outlet of the shell-tube heat exchanger is connected with an inlet of the compressor and the fin type heat exchanger set through the electronic expansion valve. The fin type heat exchanger set comprises at least two sets of heat exchange channels which are mutually independent, each heat exchange channel is formed by connecting a three-way valve, a fin type heat exchanger and a one-way valve in series, and the three-way valve is connected with an inlet and an outlet of the compressor. The utility model provides a multifunctional efficient defrosting evaporation cold and heat pump unit, which can realize three functions of efficient refrigeration, heating and continuous defrosting while heating.

The invention relates to a ground source heat pump unit utilizing terrestrial heat applied to the technical field related to heat pump units, through the arrangement of a connector protection unit, on one hand, the connector of a heat exchange coil pipe can be protected and cannot make direct contact with soil, and the possibility of leakage at the connector is reduced; the water seepage monitoring unit and the fixed-point monitoring unit which are arranged in the joint protection unit in a matched mode can obviously distinguish whether the heat exchange coil pipe seeps water from the upper portion or the lower portion, and according to the water seepage condition of the lower pipe connecting position, leaked water can be concentrated to fall to a monitoring ring firstly, so that a pressure sensor in the monitoring ring is triggered; compared with large-area excavation and maintenance in the prior art, the fixed-point excavation and maintenance method has the advantages that the maintenance difficulty is greatly reduced, the maintenance efficiency is improved, and the maintenance cost investment is reduced.

A vehicle thermal management system includes: a cabin heating subsystem thermally connected to a cabin and including a cabin coolant circulation path configured to allow a cabin coolant to circulate; a power electronics (PE) cooling subsystem fluidly connected to a PE component and including a PE coolant circulation path configured to allow a PE coolant to circulate; and a battery cooling subsystem fluidly connected to a battery and including a battery coolant circulation path configured to allow a battery coolant to circulate. The vehicle thermal management system further includes a heat pump module thermally and fluidly connected to the cabin heating subsystem, the PE cooling subsystem, and the battery cooling subsystem. The heat pump module includes a refrigerant circulation path configured to allow a refrigerant to circulate.

A control device includes a housing and a circuit board assembly. The circuit board assembly includes a circuit board, a processing chip, a gas detection probe and a controllable switch element. The processing chip is configured to acquire target gas information in an environment through the gas detection probe. A control end of the controllable switch element is electrically connected to the processing chip. An output end of the controllable switch element is configured for electrical connection with an external device. The processing chip is configured to control switching on or off of the controllable switch element at least according to the target gas information, thereby controlling change of an electrical signal of the external device. An air conditioner having the control device is also disclosed.

The invention provides a control method of an air conditioner heat recovery system, the air conditioner heat recovery system and a computer readable storage medium. The method comprises the steps that the water temperature of a water heater and the indoor environment temperature at the current moment are obtained; according to the water temperature of the water heater and the indoor environment temperature, the operation mode of the air conditioner heat recovery system is determined, and the first operation mode is a mode that the air conditioner is in a refrigeration mode and does not heat the water heater; the second operation mode is a mode in which the air conditioner is in a refrigeration mode and heat released by a refrigerant of the air conditioner is completely used for heating the water heater, and the third operation mode is a mode in which the air conditioner is in the refrigeration mode and part of heat released by the refrigerant of the air conditioner is used for heating the water heater; and controlling the air conditioner heat recovery system to operate in the operation mode. According to the method, through switching of multiple operation modes of the system, condensation heat can be recovered to reserve domestic hot water in advance while intelligent regulation and control of the indoor temperature are achieved, and effective utilization of heat energy of the whole house is achieved.

Outdoor unit (10) for a heat pump (1) comprising a refrigerant circuit, the outdoor unit comprising a compressor (13), a discharge pipe (17) of the refrigerant circuit connected to a discharge side of the compressor (13), a bottom plate (31), the bottom plate (31) having a base (36) and an outer flange (37) protruding upward from an outer edge of the base (36), a heat source heat exchanger (11) supported on the bottom plate (31), a liquid refrigerant pipe (19; 20) of the refrigerant circuit connected to the heat source heat exchanger (11), and a defrosting bypass pipe (50) connected at one end to the discharge pipe (17) and at the opposite end to the liquid refrigerant pipe (19; 20), the defrosting bypass pipe (50) being arranged between an inner side (37a) of the flange (37) and an outer side (11a) of the heat source heat exchanger (11) .

A heat exchanger includes at least two plate bodies stacked with each other and at least one connecting sheet. Each of the at least two plate bodies is provided with a plurality of micro-passages. The at least one connecting sheet is arranged between adjacent plate bodies of the at least two plate bodies. A solder is disposed on each of two opposite sides of the at least one connecting sheet, and the solder is configured to weld and fix the at least one connecting sheet with the adjacent plate bodies of the at least two plate bodies.

The invention provides a direct cooling heat pump air conditioning system for an energy storage temperature control system, which comprises a compressor, a four-way valve, a first branch, a second branch and a liquid cooling device, the first branch is provided with a first end and a second end, the second branch is provided with a port A and a port B, and the second end and the port B are respectively connected with two ends of the liquid cooling device; the four-way valve is provided with a first valve port, a second valve port, a third valve port and a fourth valve port, an exhaust port of the compressor is communicated with the first valve port, an air suction port of the compressor is communicated with the third valve port, a first end is communicated with the second valve port, and a port A is communicated with the fourth valve port; a first condensation section and a first heat exchange section are connected to the first branch in series, and the first heat exchange section is arranged between the first condensation section and the second end. A second condensation section and a second heat exchange section are connected to the second branch in series, and the second heat exchange section is arranged between the second condensation section and the port B. The technical problem that in the prior art, a liquid cooling system needs multiple heat exchange, cold energy cannot directly act on a heating battery cell, and the heat exchange performance is low is solved.

A blower and heat exchanger component of a heat pump, includes physically moveable interface blocks located at the corners. The blocks are relocatable to different corner locations on the unit, to allow a same blower / heat exchanger component to adapt to an existing duct being located on either side (e.g., by installing the component rotated within the installation space as appropriate). Active interface block(s) moveable to different corners afford access to power connection and / or data connections and status display features. Blank blocks occupy the corner locations left vacant by relocation of active blocks to the side of the unit serving as the front for a particular installation. The moveable corner blocks afford access to the unit for power and data connection, and status display, irrespective of orientation as installed relative to an existing ducting layout of a building.

The present invention relates to a cooling and heating heat pump system having a dehumidifying unit in an indoor unit, the heat pump system comprising: a cooling line in which a high-temperature and high-pressure refrigerant discharged at a discharge side of a compressor passes through a four-way valve, passes through an outdoor unit and a first expansion valve, is converted into a low-temperature and low-pressure refrigerant, passes through an indoor heat exchanger seated in the indoor unit, flows into the four-way valve, and is then circulated back to a suction side of the compressor; and a dehumidifying line in which a high-temperature and high-pressure refrigerant discharged at the discharge side of the compressor is discharged via the dehumidifying line formed between the discharge side and the four-way valve, the high-temperature and high-pressure refrigerant, which has passed through a top refrigerant line of a dehumidifying heat exchanger seated in parallel with and spaced apart from a lower end of the indoor heat exchanger of the indoor unit, passes through a second expansion valve, is converted into a low-temperature and low-pressure refrigerant, and flows back into a bottom refrigerant line of the dehumidifying heat exchanger, and the passing refrigerant is circulated to the compressor via the suction side of the compressor.