30results about How to "Achieve defrosting" patented technology

The invention relates to a mixed-work substance deep-cooling throttle refrigeration system which utilizes restored compression heat for realizing evaporator defrosting and temperature change controlling, comprising a compressor, a heat accumulator, a lubricant separator, an aftercooler, an regenerated heat exchanger unit, throttle refrigeration elements, an evaporator unit, a control unit and a control execution unit set. The control execution unit set comprises a controllable heating valve set and a controllable refrigerating valve set and can realize controllable operation of heating and refrigerating; as to the different working conditions of the mixed-work substance deep-cooling throttle refrigeration system, the controlling method can realize the refrigerating and heating of the evaporator so as to meet controlling demands in different working conditions according to the comparison between a pre-set value and an input parameter and by controlling the opening and closing of the controllable valves and the change of the flowing direction. The system can utilize the restored compressed heat to realize evaporator defrosting and temperature change controlling without extra heating sources, thus reducing the energy consumption of the system.

The invention discloses an electrically operated valve, aiming at the problems that the elasticity of a stopping part for preventing a coil from being loosened corresponding to a valve body is low in the prior art; the technical proposal of the invention comprises a valve seat, a valve needle, the stopping part and a stepping motor which is composed of a rotor and a stator for driving the valve needle and the valve seat to joint or detach; the stopping part is fixedly connected with a stator coil box, and internally concave bending parts which are opposite are additionally arranged above externally convex bending parts on two arm parts extended downwards thereof respectively. As the two arm parts of the stopping part are respectively provided with two bending parts, higher elasticity is obtained under the condition of same deformation, the fixation is reliable and the working noise is low; the valve has the advantages of compact structure and good assembling operability; moreover, the vibration reduction is greatly improved for obtaining accurate flow control; therefore, the valve is particularly suitable for refrigerators, air conditioning refrigerating units, water heaters and dehumidifiers, thus realizing defrosting, the flow control and on-off control and the like of a heating system.

The invention relates to a method and a device for defrosting, pressure maintaining and energy conservation of a refrigerator, and pressure relief and damping during start-up of a compressor. The device for the defrosting and pressure maintaining of the refrigerator and the pressure relief and damping during the start-up of the compressor comprises an evaporator, a compressor, a condenser, a start-up / defrosting branch, a capillary and a filter. The compressor is connected with the evaporator, the start-up / defrosting branch and the condenser respectively; the condenser is connected with the filter; the filter is connected with the capillary; and the capillary is connected with the evaporator. The device is characterized by further comprising an electromagnetic valve and a one-way valve, wherein the electromagnetic valve is arranged among the evaporator, the capillary and the start-up / defrosting branch, and the one-way valve is arranged between the compressor and the condenser. The method and the device have the benefits that defrosting is realized without an electric heater, pressure maintaining and energy conservation are realized without shutdown, pressure relief and damping are realized during the start-up of the compressor, and problems of difficult start-up of a frequency conversion system of the refrigerator and great vibration during the start-up are solved. The method and the device are applicable to various refrigerators.

The invention provides an air conditioning system. The air conditioning system comprises a compressor, a four-way valve, an indoor heat exchanger, a throttling element, an outdoor heat exchanger assembly, a first solenoid valve and a second solenoid valve which are sequentially connected; the outdoor heat exchanger assembly comprises an outdoor heat exchanger; the second solenoid valve is connected in series between the indoor heat exchanger and the throttling element; the indoor heat exchanger and the second solenoid valve which are connected in series are connected in parallel with the first solenoid valve, or the indoor heat exchanger, the second solenoid valve and the throttling element which are connected in series are connected with the first solenoid valve in parallel; the four-way valve is equipped with a first valve port, a second valve port, a third valve port and a fourth valve port; the first valve port communicates with a first end port of the outdoor heat exchanger; a second end port of the outdoor heat exchanger communicates with the throttling element; the second valve port communicates with an exhaust valve of the compressor; the third valve port respectively communicates with the first end port and the first solenoid valve of the indoor heat exchanger; the second end port of the indoor heat exchanger communicates with the second solenoid valve; the fourth valve port communicates with the air inlet device of the compressor. According to the air conditioning system, a heat pump type air conditioner can be used for quickly defrosting the outdoor heat exchanger.

The invention relates to the field of fuel cell vehicles, in particular to a thermal management control method and system and a fuel cell vehicle. The method comprises the steps: adjusting the heat exchange between a cooling circulation loop and a warm air circulation loop through a heat exchange loop, wherein heat exchange is conducted between the heat exchange loop and the cooling circulation loop through a heat exchanger; controlling the heat exchange loop to be communicated with the warm air circulation loop through a three-way valve; controlling the opening degree of the three-way valve according to the temperature parameter relation of the cooling circulation loop and the warm air circulation loop, and adjusting the liquid flow in the pipeline of the heat exchange loop and the warm air circulation loop. According to the embodiment of the invention, the heat dissipated when the fuel cell works is transferred to the warm air circulation loop, and the opening degree of the three-way valve in the warm air circulation loop is adjusted according to the temperature parameters of different loops, so that the temperature in a whole vehicle cabin and the temperature of the fuel cell can be accurately controlled under the condition of high-power operation of the fuel cell; moreover, the efficient utilization of waste heat can be ensured under the conditions that the fuel cell runs at low power and the available waste heat quantity is smaller.

The invention discloses a distributed water-steam-cold-heat-electricity combined supply device and method. The device comprises a cooling and heating module, a power supply module, a humidifying module, a power consumption module and a water consumption module; operation electricity is provided by a fuel cell stack, when heating is performed, part of circulating water directly enters an outdoor heat exchanger, the other part of the circulating water enters a cell cooling loop before entering the outdoor heat exchanger and further enters the outdoor heat exchanger to exchange heat with a compressor loop and circulate, the stack can be cooled and the circulating water can be preheated while the heating target is realized, the work of the compressor is reduced while the temperature of the stack is reduced, and the operation efficiency of the stack and the whole device is improved; when cooling is performed, part, flowing out and then flowing in a cooling tower, of the outdoor circulating water directly enters the outdoor heat exchanger, the other part enters the cell cooling loop, further flows into a cooling tower water tank again and flows out for circulation, the stack can be cooled while the cooling target is realized, and the operation efficiency of the stack is improved.

The invention discloses a refrigerating system and a control method thereof. The refrigerating system comprises a compressor, an outdoor heat exchanger, a throttling device and an indoor heat exchanger which are sequentially connected from head to tail to form a loop. The compressor comprises a shell body and a compressing mechanism, a main air exhaust port is formed in the shell body, the compressing mechanism is provided with a first compressing cavity and a second compressing cavity which are independent with each other, and the first air exhaust port of the first compressing cavity suits to communicate with the main air exhaust port. The refrigerating system further comprises a four-way valve which is provided with valve ports from the first one to the fourth one; the main air exhaust port is connected with the first valve port; a first air intake port of the first compressing cavity and a second air intake port of the second compressing cavity are both connected with the fourth valve port; and the second air intake port of the second compressing cavity communicates with one of the main air exhaust port and the outer door heat transfer or is disconnected with the other one of the main air exhaust port and the outer door heat transfer selectively. According to the refrigerating system, defrosting can be conducted at the same time with heating, defrosting effect is good, defrosting time is short, and heating quantity on average is high.

The invention discloses an air conditioning circulation system and a control method thereof, and relates to the technical field of air conditioners. The air conditioning circulation system and the control method thereof are used for solving the problems that the multi-split air conditioning system is low in the temperature of produced domestic hot water and poor in the energy-saving effect. The air conditioning circulation system comprises a hot water producing switching structure and a first four-way valve; the hot water producing switching structure comprises a first connector, a second connector and a third connector; the first four-way valve comprises a port A, a port B, a port C and a port D; the first connector of the hot water producing switching structure is connected with a firstend of a hot water generator, the second connector is connected with an exhaust end of a compressor, and the third connector is connected with the port B of the first four-way valve; the port A of thefirst four-way valve is connected with a first end of an indoor heat exchanger, the B port is further connected with a second end of the hot water generator, the port C is connected with a first endof an outdoor heat exchanger, and the port D is connected with an air suction end of the compressor; and a second end of the indoor heat exchanger is connected with a second end of the outdoor heat exchanger.

The invention belongs to the field of air energy heat pumps or air energy water heaters, and particularly relates to a carbon dioxide heat pump circulation loop which comprises a compressor, a water cooling heat exchanger, a double-tube heat exchanger, a throttling device and an evaporator. An outlet of the compressor, a refrigerant tube of the water cooling heat exchanger, a tube pass of the double-tube heat exchanger, the throttling device, the evaporator, a shell pass of the double-tube heat exchanger and an inlet of the compressor are sequentially connected, carbon dioxide refrigerants of the water cooling heat exchanger are led into the double-tube heat exchanger, low-temperature carbon dioxide gas at an outlet of the evaporator is led into the shell pass of the double-tube heat exchanger and used for cooling the carbon dioxide refrigerants in the tube pass, the carbon dioxide refrigerants are liquefied, and the liquefied carbon dioxide refrigerants enter the throttling device and enter the inside of the evaporator after throttling pressure reduction, so that circulation of the carbon dioxide heat pump circulation loop is realized.

The invention discloses an electric valve, aiming at the problems that the elasticity of a stopping part for preventing a coil from being loosened corresponding to a valve body is low in the prior art; the technical scheme of the invention comprises a valve seat, a valve needle, the stopping part and a stepping motor which is composed of a rotor and a stator for driving the valve needle and the valve seat to joint or detach; the stopping part is fixedly connected with a stator coil box, and internally concave bending parts which are opposite are additionally arranged above externally convex bending parts on two arm parts extended downwards thereof respectively, a clamping part is fixedly arranged on the outside surface of the stator coil box, a clamping opening adaptated with the clamping part is arranged on a basal part of the stopping part and is buttoned with the clamping part on the coil box to realize a clamping connection. The electric valve has the advantages of low working noise, compact structure and good assembling operability; moreover, the vibration reduction is greatly improved for obtaining accurate flow control; therefore, the electric valve is particularly suitable for refrigerators, air conditioning refrigerating units, water heaters and dehumidifiers, thus realizing defrosting, the flow control and on-off control and the like of a heating system.

The invention discloses a solar high-temperature phase change mass memory heat storage air source heat pump system and a defrosting method thereof. The system comprises a solar high-temperature phase change mass memory heat storage circular system and the like. The solar high-temperature phase change mass memory heat storage circular system comprises a heat storage pump, a heat storage pipeline and a solar energy collector; the high-temperature phase change mass memory exothermic defrosting system comprises a high-temperature phase change mass memory heat reservoir, a defrosting pipeline, a defrosting pump and an outdoor evaporator; the outdoor evaporator comprises an evaporation defrosting pipe bundle, the evaporation defrosting pipe bundle comprises an inner evaporation pipe bundle, a defrosting pipe bundle and an outer evaporation pipe bundle; the air source heat pump heating circular system comprises an indoor condenser, a gas replenishing and enthalpy increasing compressor, an outdoor evaporator, a main circuit loop pipeline, a main circuit loop throttling valve, an economizer, a bypass pipeline and a bypass throttling valve. According to the defrosting method, clean and reproducible solar energy is utilized to conduct defrosting rapidly and efficiently all day long, the energy consumption of the system is reduced, and the requirement for defrosting in an extreme weather can be met, the comfort of heating can be ensured, and better services can be provided for switching from coal to electricity in the north.

The invention provides an air conditioner control system and a control method, the air conditioner control system comprises a compressor (1), an indoor heat exchanger (2) and an outdoor heat exchanger(3), wherein a branch (4) is further formed on a pipeline between a high pressure exhaust end (11) of the compressor (1) and the indoor heat exchanger (2), a base plate heating module (5) is arrangedon the branch (4) and can heat an air conditioner base plate, and the other end of the branch (4) is connected back to a low pressure suction end (12) of the compressor. According to the air conditioner control system and the control method, a refrigerant can be used for deicing, the energy can be fully used, the energy efficiency is improved, power dissipation is reduced, energy conservation andemission reduction are realized, and the reliability problem is solved; the problem that ice is difficult to melt on the base plate under the extreme cold condition so that the fan blade and the iceblock are in friction can be solved, and the problems that the operation noise of the outer machine is larger and mechanical faults are easy to occur in the severe cold area are solved from the source.

The invention provide a multi-heat-source heat pump type electric vehicle heat management system based on phase change heat storage. A phase change heat storage unit is additionally arranged in a power assembly heat dissipation pipeline, the number, form and time differences of energy in supply and demand are overcome, efficient heating and cooling of an electric vehicle can be achieved, the mode that an air source heat pump is combined with a water loop heat pump is adopted, the water loop heat pump mode is switched to operate under the extremely low-temperature working condition, and a series of problems caused by the air source heat pump can be avoided. Three electric vehicle heat management subsystems are organically integrated, the valve control operability is high, the component structures are compact, and the integration degree is high; in a passenger compartment heat management, a water-cooled condenser is adopted as a heat release device of a refrigerating circuit, and the problems that a condenser used at present is generally large in size and large in occupied space can be solved; and in addition, a phase change heat storage device can reduce the area of a radiator at the front end, so that the windward area can be reduced, the wind resistance is reduced, and the endurance mileage is increased.

The invention relates to a heat pump air conditioner control method and device, electronic equipment, a storage medium and a vehicle, and relates to the technical field of air conditioners or automobile air conditioners. The control method comprises the steps that a heating control signal is received, and the external environment temperature, the first temperature of a first heat exchanger and thesecond temperature of a second heat exchanger are obtained; determining a heating mode according to the heating control signal, the second temperature and the environment temperature, and determiningwhether the first heat exchanger needs to be defrosted or not according to the heating mode and the first temperature; if defrosting is needed, whether the defrosting starting condition is met or notis determined according to the environment temperature and the second temperature; if the defrosting starting condition is met, the second heat exchanger and the defrosting assembly are controlled todefrost the first heat exchanger, and whether defrosting is completed or not is determined; and if yes, the first heat exchanger and the first heating assembly are controlled to enable the third heatexchanger to conduct heating. Defrosting of the heat exchanger can be realized.

The invention relates to the technical field of air conditioners, and discloses a defrosting control method for an air conditioner. The air conditioner comprises an electrochemical compressor and a first heat exchanger which communicates with the electrochemical compressor through a hydrogen release channel and is installed in the outdoor environment. The method comprises the steps that the frosting state of the first heat exchanger is obtained; and if it is determined that the first heat exchanger is in the frosting state, the hydrogen flow of the hydrogen release channel communicating with the electrochemical compressor is reduced. By means of the method, the power consumption of the air conditioner can be reduced. The invention further discloses a defrosting control device for the air conditioner and the air conditioner.

The invention relates to the field of air conditioners and discloses an air heat pump type air-conditioning system and a control method thereof. The air heat pump type air-conditioning system comprises a compressor, an indoor heat exchanger, a throttling valve, an outdoor heat exchanger, a gas return valve and a gas-liquid separator, wherein the compressor, the indoor heat exchanger, the throttling valve, the outdoor heat exchanger, the gas return valve and the gas-liquid separator are connected in sequence. A gas outlet of the gas-liquid separator is connected with a gas inlet of the compressor, so that a loop is formed. A defrosting electromagnetic valve is connected between a pipeline located between the outdoor heat exchanger and the gas return valve and a gas outlet of an oil separator. An oil drainage port of the oil separator is connected with one end of an oil return sleeve. The other end of the oil return sleeve is connected with a gas inlet of the gas-liquid separator. According to the air heat pump type air-conditioning system and the control method thereof, defrosting of an outdoor unit can be achieved without switching to a refrigerating mode in the heating process, so that the heating state is kept in a room all the time in the defrosting process, the indoor temperature is not decreased, and user experience is better.

The invention relates to the technical field of vehicle manufacturing, in particular to a heat pump air conditioning system and a vehicle. The heat pump air conditioning system comprises a heat pump air conditioning unit, a heating piece cooling unit, a battery cooling unit and a first pipeline, wherein the heat pump air conditioning unit comprises an outdoor heat exchanger; the heating piece cooling unit comprises a heating piece cooling plate and a first heat exchanger which are connected with each other and form a loop; the battery cooling unit comprises a battery cooling plate and a secondheat exchanger which are connected with each other and form a loop; the first heat exchanger and the second heat exchanger are connected in series through the first pipeline, and the first pipeline is connected with the outdoor heat exchanger in parallel. According to the heat pump air conditioning system, the problem that in the prior art, the heat generated by a heating device can be recycled or cooled, the number of valves in the system is more and the corresponding joint is more, so that the risk of refrigerant leakage of the system is increased are avoided.

The invention relates to a method and a device for defrosting, pressure maintaining and energy conservation of a refrigerator, and pressure relief and damping during start-up of a compressor. The device for the defrosting and pressure maintaining of the refrigerator and the pressure relief and damping during the start-up of the compressor comprises an evaporator, a compressor, a condenser, a start-up / defrosting branch, a capillary and a filter. The compressor is connected with the evaporator, the start-up / defrosting branch and the condenser respectively; the condenser is connected with the filter; the filter is connected with the capillary; and the capillary is connected with the evaporator. The device is characterized by further comprising an electromagnetic valve and a one-way valve, wherein the electromagnetic valve is arranged among the evaporator, the capillary and the start-up / defrosting branch, and the one-way valve is arranged between the compressor and the condenser. The method and the device have the benefits that defrosting is realized without an electric heater, pressure maintaining and energy conservation are realized without shutdown, pressure relief and damping are realized during the start-up of the compressor, and problems of difficult start-up of a frequency conversion system of the refrigerator and great vibration during the start-up are solved. The method and the device are applicable to various refrigerators.

The invention discloses a refrigerating system and a control method thereof. The refrigerating system comprises a compressor, an outdoor heat exchanger, a throttling device and an indoor heat exchanger which are sequentially connected end to end to form a circuit. The compressor includes a shell and a compression mechanism. The shell is provided with a main discharge port. The compression mechanism has a first compression chamber and a second compression chamber independent of each other. The first discharge port of the first compression chamber is suitable for connecting with the main discharge port. The gas port is connected, and the refrigeration system also includes a four-way valve with first to fourth valve ports, the main exhaust port is connected to the first valve port, the first suction port of the first compression chamber and the second port of the second compression chamber The suction ports are all connected to the fourth valve port, and the second discharge port of the second compression chamber is selectively connected to one of the main discharge port and the outdoor heat exchanger and blocked from the other. According to the refrigeration system of the present invention, defrosting can be performed while heating, and the defrosting effect is good, the defrosting time is short, and the average heating capacity is high.

The invention relates to a heat exchanger running auxiliary system and a heat exchanger system using the same. The heat exchanger system comprises evaporators, condensers and the heat exchanger running auxiliary system, wherein the heat exchanger running auxiliary system comprises a solid absorption type refrigerating system; the solid absorption type refrigerating system is provided with refrigerating system condensers and refrigerating system evaporators; the heat exchanger running auxiliary system also comprises a hot delivery device and / or a cold delivery device; the hot delivery device is used for delivering high-temperature media surrounding the refrigerating system condensers to the corresponding evaporators of the heat exchanger system; and the cold delivery device is used for delivering low-temperature media surrounding the refrigerating system evaporators to the corresponding condensers of the heat exchanger system. By using the heat exchanger running auxiliary system, the heat exchanging performance of a heat exchanger can be improved. The heat exchanger running auxiliary system is simple in structure, and is energy-saving and environment-friendly; and solar energy can be sufficiently utilized.

The invention discloses a solar high-temperature phase change mass memory heat storage air source heat pump system and a defrosting method thereof. The system comprises a solar high-temperature phase change mass memory heat storage circular system and the like. The solar high-temperature phase change mass memory heat storage circular system comprises a heat storage pump, a heat storage pipeline and a solar energy collector; the high-temperature phase change mass memory exothermic defrosting system comprises a high-temperature phase change mass memory heat reservoir, a defrosting pipeline, a defrosting pump and an outdoor evaporator; the outdoor evaporator comprises an evaporation defrosting pipe bundle, the evaporation defrosting pipe bundle comprises an inner evaporation pipe bundle, a defrosting pipe bundle and an outer evaporation pipe bundle; the air source heat pump heating circular system comprises an indoor condenser, a gas replenishing and enthalpy increasing compressor, an outdoor evaporator, a main circuit loop pipeline, a main circuit loop throttling valve, an economizer, a bypass pipeline and a bypass throttling valve. According to the defrosting method, clean and reproducible solar energy is utilized to conduct defrosting rapidly and efficiently all day long, the energy consumption of the system is reduced, and the requirement for defrosting in an extreme weather can be met, the comfort of heating can be ensured, and better services can be provided for switching from coal to electricity in the north.

The invention provides a refrigerator and a defrosting method thereof. The refrigerator provided by the invention comprises a refrigerating chamber; the air duct is connected with the refrigerating chamber, a first air door is arranged in the air duct and used for controlling the communication state of the air duct and the refrigerating chamber, and the communication state comprises communication and non-communication; the evaporator is arranged in the air duct, and when the first air door is opened, air in the refrigerating chamber makes contact with the surface of the evaporator for heat exchange; the defrosting assembly comprises a heater, and the heater is used for heating the evaporator; and the controller is used for controlling the matching relation of the state of the heater and the state of the first air door, so that heat energy generated during heating of the heater and heat energy of the refrigerating chamber when the first air door is opened are matched with each other to melt a frost layer on the surface of the evaporator.

The present invention provides an air-conditioning system, which includes a compressor, a four-way valve, an indoor heat exchanger, a throttling element, an outdoor heat exchanger assembly, a first solenoid valve and a second solenoid valve connected in sequence, and the outdoor heat exchanger assembly includes Outdoor heat exchanger; the second solenoid valve is connected in series between the indoor heat exchanger and the throttling element, the indoor heat exchanger after series connection, the second solenoid valve and the first solenoid valve are connected in parallel, or the indoor heat exchanger after series connection, The second solenoid valve and the throttling element are connected in parallel with the first solenoid valve; the four-way valve has first to fourth valve ports, the first valve port is connected to the first port of the outdoor heat exchanger, and the second port of the outdoor heat exchanger is connected to The throttling element, the second valve port is connected to the exhaust end of the compressor, the third valve port is respectively connected to the first port of the indoor heat exchanger and the first solenoid valve, and the second port of the indoor heat exchanger is connected to the second solenoid valve, The fourth valve port communicates with the suction end of the compressor. The air conditioning system of the present invention enables the heat pump air conditioner to quickly defrost the outdoor heat exchanger.

The invention relates to a self-overlapping low-environment-temperature air source heat pump system. The system comprises a refrigerant compression system, a heat supply device, a low temperature system, a high temperature system and an intermediate heat exchanger; the refrigerant compression system, the heat supply device, the high temperature system and the intermediate heat exchanger are connected in sequence through pipelines to form a high-temperature refrigerant circulating system; a low-temperature refrigerant in the low-temperature system secondarily exchanges heat with an air coolingheat exchanger after primary heat exchange by the intermediate heat exchanger; and the low-temperature refrigerant after secondary heat exchange is gathered into a high-temperature refrigerant, not passing through the intermediate heat exchanger, for mixed circulation. The energy efficiency ratio of the air source heat pump system in low-temperature environment is improved; and the use limited environment temperature of the system is lower.

The invention provides an air conditioner defrosting control method and device and an air conditioner. The air conditioner comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger, a gas pipeline and a liquid pipeline, the air conditioner further comprises a defrosting pipeline, one end of the defrosting pipeline communicates with the gas pipeline, and the other end of the defrosting pipeline is connected to the outdoor heat exchanger. Whether the air conditioner meets the defrosting condition or not is judged; and if yes, the high-temperature refrigerant in the compressor is controlled to flow to the indoor heat exchanger from the gas pipeline, and meanwhile the high-temperature refrigerant in the compressor is controlled to flow to the outdoor heat exchanger from the defrosting pipeline. The technical problems that when the air conditioner conducts heating and defrosting, the heating efficiency of the air conditioner is low, and the user experience is poor can be solved.

The invention relates to a self-overlapping low-environment-temperature air source heat pump system. The system comprises a refrigerant compression system, a heat supply device, a low temperature system, a high temperature system and an intermediate heat exchanger; the refrigerant compression system, the heat supply device, the high temperature system and the intermediate heat exchanger are connected in sequence through pipelines to form a high-temperature refrigerant circulating system; a low-temperature refrigerant in the low-temperature system secondarily exchanges heat with an air coolingheat exchanger after primary heat exchange by the intermediate heat exchanger; and the low-temperature refrigerant after secondary heat exchange is gathered into a high-temperature refrigerant, not passing through the intermediate heat exchanger, for mixed circulation. The energy efficiency ratio of the air source heat pump system in low-temperature environment is improved; and the use limited environment temperature of the system is lower.