139results about How to "Improve defrosting efficiency" patented technology

The utility model relates to the technical field of automatic defrosting, and provides an automatic defrosting mechanism of an air source heat pump, which comprises an air source heat pump body and a heat exchange evaporator, the heat exchange evaporator comprises a heat exchange fin, a defrosting pipe is fixedly mounted on the heat exchange fin, the air source heat pump body is communicated with a cold water pipe and a hot water pipe, and the cold water pipe is communicated with the hot water pipe. A heat preservation heating box is fixed to the outer wall of the air source heat pump body and communicated with a first water guide pipe, the first water guide pipe is communicated with one end of the defrosting pipe, the hot water pipe is further communicated with a water inlet pipe, the water inlet pipe is communicated with the heat preservation heating box, and the communication position is controlled by an electromagnetic control valve. The second water guide pipe communicates with a one-way water valve. The water inlet pipe is additionally arranged on the hot water pipe of the automatic defrosting mechanism of the air source heat pump and matched with the first water guide pipe, the defrosting pipe and the second water guide pipe, the heat exchange evaporator is defrosted, it is guaranteed that the heat exchange evaporator makes full contact with outside air, and the working efficiency of the heat exchange evaporator is not affected.

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.

The invention discloses a transcritical carbon dioxide hot water system. The system comprises a first-stage compressor, a first heat exchanger used for exchanging heat with user side cooling water, a second-stage compressor, a second heat exchanger used for exchanging heat with user side cooling water, a third heat exchanger used for exchanging heat with a liquid-phase refrigerant and a gas-phase refrigerant, an expansion valve, a fourth heat exchanger used for exchanging heat with ambient air, a buffer water tank and a first proportional valve. A first proportional valve, a second proportional valve, a third proportional valve, a fourth proportional valve, a defrosting valve, a refrigerant path bypass valve and the like; according to the system, single-stage and double-stage compression switching in high-temperature weather and low-temperature weather can be achieved, it is guaranteed that the unit has good heating capacity and energy efficiency ratio when high-temperature water is discharged in the high-temperature weather and the low-temperature weather, and meanwhile the water outlet temperature control problem and the defrosting problem of the transcritical carbon dioxide single-double-unit compression system are solved.

The invention relates to the field of refrigeration equipment, in particular to a defrosting system applied to a small-unit low-temperature air-cooled freezer, the air-cooled freezer comprises an evaporator, a fin set is arranged in the evaporator, and the defrosting system comprises an electric heating defrosting device, a vibration defrosting device and a drainage device; the electric heating defrosting device comprises an electric heating pipe arranged at the bottom of the evaporator, and frost on the evaporator is heated through the electric heating pipe. The vibration defrosting device comprises a poking device installed on the outer side of the evaporator in a sliding mode, the poking device is driven by a driving device connected with the poking device to move, a poking piece matched with the fin set is arranged in the poking device, and the poking piece pokes the fin set to generate vibration along with movement of the poking device. The drainage device comprises a water receiving basin installed below the evaporator, the water receiving basin is obliquely arranged, a drainage plate is arranged at the bottom of the water receiving basin, and a drainage opening is formed in one side of the drainage plate in a penetrating mode. The defrosting system applied to the small-unit low-temperature air-cooled refrigerator is short in defrosting and deicing time consumption and convenient to deice and drain water.

The invention discloses a refrigeration system of a refrigeration house, comprising an air cooler arranged in the refrigeration house; the water receiving disc is arranged at the bottom of the air cooler, and the water receiving disc is used for collecting condensate water and defrosting water generated by the air cooler; the water receiving disc is communicated with the cold storage device through a first pipeline, and water in the water receiving disc flows through the cold storage device for cold storage and heat exchange; and the auxiliary defrosting water spraying pipe is installed on the air cooler, the cold storage device is communicated with a water path of the auxiliary defrosting water spraying pipe through a second pipeline, and an electromagnetic valve is arranged on the auxiliary defrosting water spraying pipe. The refrigeration system of the refrigeration house can effectively save energy.

The invention belongs to the field of air conditioners, and discloses an air conditioning system and a control method of the air conditioning system, and the air conditioning system comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger, a battery heat dissipation heat exchanger, a first expansion valve, a second expansion valve, a defrosting coil pipe and a three-way valve. The dual functions of indoor heating and battery heat dissipation are achieved. And in the heating mode, heat generated by the battery is recycled and used for air conditioner heating through the first channel and the second channel which can exchange heat with each other, so that the system can effectively dissipate heat of the battery while heating indoors. Meanwhile, through the integrated design of the defrosting coil pipe and the outdoor heat exchanger, the system is allowed to guide the high-temperature cooling liquid of the battery unit to the defrosting coil pipe through the three-way valve when needed, and the outdoor heat exchanger is defrosted through heat generated by the battery. By means of the design, the defrosting efficiency is improved, heat exchange performance reduction caused by frosting is reduced, and the heating capacity of the air conditioning system is further improved.

The defrosting mechanism for the refrigeration equipment of the refrigeration house comprises a frost storage box, two sets of supporting vertical plates are fixedly connected to the frost storage box, a movable plate is installed between the two sets of supporting vertical plates in a sliding mode, one side of the movable plate is fixedly connected with an installation plate, one side of the installation plate is fixedly connected with a scraping plate, and the scraping plate is fixedly connected with the frost storage box. A defrosting table is fixedly installed on the two sets of supporting vertical plates, four sets of sliding grooves are formed in the defrosting table, sliding blocks are installed in the four sets of sliding grooves in a sliding mode, defrosting rollers are arranged between the two sets of opposite sliding blocks, a reciprocating lead screw is rotationally installed on the frost storage box, and the reciprocating lead screw is in threaded connection with a moving plate. And a connecting rod is movably mounted between the sliding block and the moving plate. According to the defrosting roller, the reciprocating screw rod is matched with the scraping plate, the moving plate, the sliding block, the rotating rod, the gear and the rack, so that frost on the top of the refrigeration house is removed through the defrosting roller, the scraping plate removes frost on the side wall of the refrigeration house, and the defrosting efficiency of the refrigeration house is improved.

The invention discloses an air conditioner and a control method and device thereof, a storage medium and a computer program product. The method comprises the steps that under the condition that the air conditioner operates in a heating mode, the frequency of a compressor, the rotating direction of an outdoor fan, the rotating speed of the outdoor fan, the pipe temperature of an outdoor heat exchanger and the outdoor environment humidity of the air conditioner are obtained; according to the frequency of the compressor, the rotating direction of the outdoor fan, the rotating speed of the outdoor fan, the outdoor environment humidity of the air conditioner and the pipe temperature of the outdoor heat exchanger, frost layer unevenness parameters of the outdoor heat exchanger are determined; according to the outdoor environment humidity of the air conditioner, the frequency of the compressor and the pipe temperature of the outdoor heat exchanger, frost layer thickness parameters of the outdoor heat exchanger are determined; and according to the frost layer non-uniformity parameter of the outdoor heat exchanger and the frost layer thickness parameter of the outdoor heat exchanger, a preset defrosting control strategy is executed. According to the scheme, the frost layer of the outdoor heat exchanger is uniform in the generation process, so that the defrosting time is delayed, and the heating capacity is guaranteed.

The utility model provides a low-temperature refrigeration evaporation coil device with a uniform defrosting function, which relates to the technical field of refrigeration equipment and comprises a device shell, a coil main body is fixedly inserted into the inner surface wall of the device shell, a group of fins are fixedly sleeved on the outer surface wall of the coil main body, and a partition plate is fixedly connected to the inner surface wall of the device shell. Two groups of mounting holes are formed in the top of the partition plate, a first circulating fan is fixedly inserted into the inner surface wall of one group of the two groups of mounting holes, and a second circulating fan is fixedly inserted into the inner surface wall of the other group of the two groups of mounting holes. According to the low-temperature refrigeration evaporation coil device, uniform defrosting of the low-temperature refrigeration evaporation coil device is achieved under the interaction of all the components of the device, frost on the surface of the coil is completely melted, and therefore the influence of local frosting on heat exchange efficiency is eliminated, refrigeration efficiency is remarkably improved, energy consumption is effectively reduced, and energy is saved. And the equipment failure risk caused by uneven defrosting is reduced.

The invention discloses a control method of an air conditioner, the air conditioner and a storage medium, and relates to the technical field of air conditioners, the control method of the air conditioner is applied to the air conditioner, and the air conditioner comprises an oil pool heating module used for heating an oil pool of a compressor and a heat exchanger heating module used for heating an outdoor heat exchanger. The control method of the air conditioner comprises the steps that the temperature of an outlet coil of an outdoor heat exchanger before the air conditioner is switched to a defrosting mode is obtained, and the outdoor environment temperature is obtained in real time; after the air conditioner is switched to run in the defrosting mode, when the outdoor environment temperature is smaller than the preset environment temperature, a thermal response coefficient is determined according to the outdoor environment temperature and the outlet coil pipe temperature; and a heating scheme is determined according to the thermal response coefficient, and the on-off state of the oil pool heating module and / or the heat exchanger heating module is adjusted according to the heating scheme. The auxiliary heating module is used for conducting auxiliary heating treatment on the air conditioner in the defrosting mode, oil blockage is avoided, and the defrosting efficiency is improved.

The invention particularly relates to an evaporator assembly and refrigeration equipment. The evaporator assembly comprises a fin and an evaporation coil pipe penetrating through the fin, and the fin comprises a bent part; the evaporator assembly further comprises a stretching unit acting on the bending part, and the stretching unit drives the bending part to stretch and deform in the direction opposite to the bending direction of the bending part under the acting force of external force. The stretching unit acting on the bending part drives the bending part to stretch and deform in the direction opposite to the bending direction of the bending part under the acting force of external force. The fins full of frost vibrate due to deformation, meanwhile, the surfaces of the fins are extruded and stretched, defrosting is achieved through stretching of the stretching unit, the temperature of the evaporator cavity cannot be greatly increased, energy loss cannot be caused, and the defrosting device has the advantages of being high in defrosting efficiency, capable of saving energy, efficient and easy to implement.

The air cooler with the defrosting mechanism comprises a machine cabinet and further comprises a water pan installed at the bottom of the machine cabinet, and the water pan is provided with a water receiving groove and a water outlet communicated with the water receiving groove; the defrosting assembly comprises a first coil pipe and a second coil pipe, the inlet end of the first coil pipe and the inlet end of the second coil pipe are connected with a heating medium inlet pipe, and the outlet end of the first coil pipe and the outlet end of the second coil pipe are connected with a heating medium outlet pipe; wherein the second coil pipe is arranged on the periphery of the first coil pipe, the second coil pipe is higher than the first coil pipe in the vertical direction, and the first coil pipe is installed on the water receiving tank. The defrosting range in the water pan is expanded by staggering the second coil pipe relative to the first coil pipe in the vertical direction and the transverse direction, and the defrosting efficiency is improved.

The utility model relates to the technical field of refrigeration equipment, in particular to a quick-freezing hot fluorine defrosting device which comprises a shell, a collecting hopper and a connecting pipe. The shell is of an n-shaped shell structure, the collecting hopper is fixed to the lower portion of the shell, and the connecting pipe is fixed to the lower portion of the collecting hopper. The motor bracket is fixed on the inner wall of the lower end of the connecting pipe; a motor is fixed to the middle of a motor support, and a rotating shaft of the motor penetrates through the motor support to be fixedly connected with a smashing cutter. The water containing tank is connected with the lower end of the connecting pipe; the evaporation pipe is arranged in the shell, and the two ends of the evaporation pipe are connected with the liquid inlet pipe and the liquid return pipe correspondingly. The heating wires are arranged above and below the middle of the evaporation pipe; by improving the quick-freezing hot fluorine defrosting device, the quick-freezing hot fluorine defrosting device has the advantages that frost is cut off through the heating wire, so that the frost falls more quickly, the frost is collected and crushed, and the frost is prevented from being frozen again, so that the problems and defects in the prior art and equipment are effectively solved.

The invention provides an air conditioner outdoor unit, an air conditioner and a control method of the air conditioner outdoor unit, the air conditioner outdoor unit comprises a heat exchanger and a fan device, and the fan device is used for driving airflow to flow through the heat exchanger; the heat exchanger is provided with a first side and a second side which are opposite. The air conditioner outdoor unit has at least two states, in the first state, the fan device drives airflow to flow through the heat exchanger from the first side to the second side, so that the first side is a windward side, and the second side is a leeward side; and in the second state, the fan device drives the airflow to flow through the heat exchanger from the second side to the first side, so that the second side is a windward side, and the first side is a leeward side. According to the technical scheme, when one side of the heat exchanger serves as the windward side and is seriously frosted, the operation state of the outdoor unit of the air conditioner can be switched, the other side of the heat exchanger serves as the windward side, in this way, the heating time of the air conditioner can be prolonged, even continuous heating of the air conditioner can be achieved, and therefore the shutdown defrosting frequency of the air conditioner is reduced.

The application discloses a cold air machine air inlet water blocking structure and a cold air machine. The cold air machine air inlet water blocking structure comprises side plates arranged on both sides of an air inlet of a cabinet body, at least one water blocking plate connected between the two side plates, a heating pipe installed on an end surface of the water blocking plate away from the air inlet, and at least one closing plate connected between the two side plates. The closing plate is arranged on the side of the water blocking plate away from the air inlet, and a heating cavity for accommodating the heating pipe is formed between the closing plate and the water blocking plate. When defrosting operation is performed, the heating pipe can effectively defrost frost layers condensed on the surface of the water blocking plate, and the defrosting efficiency is improved.

The invention relates to the technical field of electric appliances, in particular to a defrosting control method and system of a heat pump unit and the heat pump unit, and aims to solve the problem that a plate heat exchanger is frost-cracked during defrosting of an existing heat pump unit. In order to achieve the purpose, the defrosting control method of the heat pump unit comprises the steps that according to the condenser temperature obtained by a defrosting sensor, whether the heat pump unit meets the first defrosting condition or not is judged; according to the waterway state information of the plate heat exchanger, whether the heat pump unit meets a second defrosting condition or not is judged; when the heat pump unit meets the first defrosting condition and the second defrosting condition at the same time, the heat pump unit is controlled to enter a first defrosting mode; and when the heat pump unit meets the first defrosting condition and does not meet the second defrosting condition, the heat pump unit is controlled to enter a second defrosting mode. The defrosting mode can be flexibly adjusted, so that the plate heat exchanger is prevented from being in a low-temperature environment, the plate heat exchanger is prevented from frost cracking, and the service life of the plate heat exchanger is prolonged.

The utility model discloses a refrigeration equipment relates to refrigeration equipment technical field, refrigeration equipment includes box, evaporator, heating element, box is provided with evaporator cabin, the evaporator is located in the evaporator cabin, the evaporator is provided with refrigerant pipe and fin, refrigerant pipe includes straight pipe section, straight pipe section vertically passes through the fin, the fin is placed on the bottom wall of evaporator cabin, the heating element is provided with heating element, the heating element is provided with heating element, the heating element is provided with heating element. The heating piece is connected to the fins and extends in the length direction of the straight pipe section, the side, close to the bottom wall, of each fin is provided with a concave part, the heating piece is installed in the concave part, a gap exists between the heating piece and the bottom wall, and defrosting water can flow towards the water outlet through the gap, so that the defrosting water is not prone to being accumulated around the heating piece, and the defrosting efficiency can be improved.

The invention discloses a refrigerator which comprises an evaporator, a fan, a defrosting element and a processing device. The processing device comprises a storage part, an acquisition part, a selection part and a control part. A prediction model constructed based on a deep Q network is stored in the state space, the state space comprises operation parameters of the refrigerator, and the action space comprises a plurality of selectable defrosting durations; the defrosting duration prediction module is configured to obtain operation parameters of the refrigerator in the current working period and input the operation parameters into the prediction model, and the selectable defrosting duration with the maximum Q value is selected from output of the prediction model to serve as predicted defrosting duration; when the running duration of the defrosting element reaches the predicted defrosting duration, the defrosting element is closed; the Q value represents an expected value for executing one selectable defrosting duration under the operation parameters of the refrigerator in the current working period. By introducing the prediction model constructed based on the deep Q network, the defrosting process of the evaporator can be intelligently optimized.

The application discloses an intelligent cold storage energy-saving device and belongs to the technical field of refrigeration equipment. The device comprises a cold storage, an evaporator and a plurality of shelves. The cold storage is provided with a cold storage door. The cold storage is fixedly connected with a partition plate. The cold storage is divided into a freezing cavity and a matching cavity through the partition plate. Each shelf is provided with an article detection sensor. The matching cavity is fixedly connected with an electric push rod. The output end of the electric push rod is fixedly connected with a connecting plate. The article detection sensor is electrically connected with the electric push rod. The cold storage is provided with a self-adaptive mechanism for determining the area of a freezing area according to whether there are frozen products on the shelves. Through cooperation of the overall structure, the area of the freezing area is determined according to whether there are frozen products on the shelves. Then, the power of the evaporator is adaptively adjusted according to the area of the freezing area, so that energy saving and environmental protection are achieved, and the freezing quality of the frozen products is ensured.

The utility model discloses a multi-split air-conditioning parallel system without stopping an indoor fan during defrosting, which relates to the field of air-conditioning systems and comprises a plurality of indoor units arranged in parallel, a defrosting system and a heat supply system, the defrosting system and the heat supply system are respectively connected with the indoor units in parallel, the defrosting system operates at low frequency, and the heat supply system operates at high frequency to ensure sufficient refrigerant. During defrosting, one outdoor unit switches the four-way valve to defrost, and other outdoor units still operate in a normal heating mode; in this way, through effective control, the outdoor units are sequentially defrosted, continuous heat supply can be achieved, it is guaranteed that the indoor unit fan does not stop due to cold air, and the comfort of the indoor environment is guaranteed.

The present invention provides an evaporator assembly and a refrigerator including the evaporator assembly. The evaporator assembly includes: an evaporator, the evaporator includes: an evaporator tube for refrigerant flow, and a plurality of fins mounted on the evaporator tube, wherein the evaporator tube and / or the fins contain magnetic conductive material; and an electromagnetic induction heating wire, which is integrated inside the evaporator and surrounds the fins, and a conductor is arranged inside the electromagnetic induction heating wire for generating an alternating magnetic field after an alternating current is applied to the conductor, so that the fins and / or the evaporator tube containing the magnetic conductive material are induced to heat up to defrost the evaporator. The evaporator assembly of the present invention has a compact structure, occupies a small volume, and has high defrosting efficiency and electrical efficiency, and is very suitable for the application scenario of an air-cooled refrigerator.

The invention discloses an air conditioner control method and device, an air conditioner, a storage medium and a computer program product, the air conditioner is provided with a coil heat exchanger, the coil heat exchanger is provided with a first refrigerant flow path and a second refrigerant flow path, and an outdoor heat exchanger comprises an outer row heat exchanger and an inner row heat exchanger; the discharge heat exchanger is connected with the throttling component through a first valve; an exhaust port of the compressor sequentially passes through the first refrigerant flow path and the second valve and then is connected to a pipeline between the discharge heat exchanger and the first valve; the second refrigerant flow path is positioned on the air suction side pipeline of the compressor; the method comprises the steps that when the air conditioner heats, the defrosting logic of the air conditioner is determined according to the outdoor environment temperature; and according to the defrosting logic, the temperature of the outdoor heat exchanger and the continuous operation duration of the compressor, opening and closing of the first valve and the second valve and the operation rotating speed of the compressor are controlled. According to the scheme, the outer-row heat exchanger and the inner-row heat exchanger are defrosted, so that the refrigerant amount of the hot gas bypass is matched with the frosting degree, and the defrosting efficiency is improved.

The utility model relates to the technical field of central air conditioners, and provides a central air conditioner condenser pipe defrosting device which comprises a base, a plurality of sets of supporting connecting rods, a water collecting disc assembly, an ice crushing assembly, a supporting assembly, a condensing coil pipe assembly and a top heating assembly. The water collecting disc assembly is arranged above the base through the supporting connecting rod, the condensing coil assembly is arranged above the water collecting disc assembly, the condensing coil assembly is fixedly installed on the water collecting disc assembly through the supporting assembly, the ice crushing assembly is fixedly installed in the water collecting disc assembly, and the ice crushing assembly is arranged below the condensing coil assembly. The top heating assembly fixedly installed on the supporting connecting rod is arranged above the condensing coil assembly. The defrosting device is reasonable in structure and convenient to use, the defrosting effect is enhanced, and the defrosting efficiency is improved.

The invention discloses a robot with a railway tunnel frost cleaning function, and relates to a railway tunnel cleaning machine, the robot comprises a chassis, the chassis is rotatably connected with hydraulic cylinders symmetrically distributed along the chassis, the chassis is rotatably connected with a rotating frame, piston rods of the hydraulic cylinders are rotatably connected with the rotating frame, and the hydraulic cylinders are rotatably connected with the rotating frame. The rotating frame is connected with a sliding frame in a sliding mode, at least one air cylinder is fixedly connected in the rotating frame, the telescopic end of the air cylinder is fixedly connected with the sliding frame, the sliding frame is connected with a measuring frame in a sliding mode, and the side, away from the air cylinder, of the measuring frame is connected with a roller in a rotating mode. The size of the through hole of the ball valve is automatically adjusted through extrusion fit of the roller and the frost surface, so that the rotating speed of the rotating frame driving the sliding frame and the cleaning roller to rotate along the frost surface of the inner wall of the tunnel is adjusted, the cleaning speed is adjusted according to the thickness of the frost, excessive defrosting in a thin area can be avoided, insufficient defrosting in a thick area can be avoided, and the cleaning efficiency is improved. The operation difficulty is low and the cost is low.

The invention discloses a refrigerator and a defrosting control method thereof, the refrigerator comprises a refrigerator body, a refrigerating system and a controller, the refrigerating system comprises a compressor, a condenser, an electric valve, a freezing evaporator, a refrigeration evaporator, a gas-liquid separator, an electromagnetic valve and an oil circulating pump; the controller is configured to control the compressor and the electric valve to be in a closed state and the electromagnetic valve and the oil circulating pump to be in an open state when the refrigerator operates in a defrosting mode; engine oil at the bottom of the gas-liquid separator is conveyed to a refrigeration evaporator through an electromagnetic valve and an oil circulating pump, and the engine oil enters a freezing evaporator for defrosting after absorbing heat; and meanwhile, after absorbing the cooling capacity of the freezing evaporator, the engine oil flows into the gas-liquid separator and then is conveyed to the refrigeration evaporator for refrigeration. The refrigerating capacity stored by frost on the freezing evaporator is transferred to the refrigerating chamber for refrigeration, the refrigerating capacity is reused while defrosting is conducted, the defrosting efficiency and the overall refrigeration utilization rate of the refrigerator are effectively improved, and the power consumption of the refrigerator is reduced.

This invention relates to the field of multi-split air conditioning system technology, specifically to a disturbance control method for the outer loop electronic expansion valve of an air conditioning system. The problem this invention addresses is how to actively eliminate oil and refrigerant blockage and reduce exhaust temperature during defrosting or oil return processes through forced disturbance control of the outer loop electronic expansion valve. To solve this problem, this invention provides a control method comprising: acquiring the operating status parameters of the air conditioning system; determining whether the air conditioning system has triggered a disturbance program based on the status parameters; correcting the reference setting based on the exhaust temperature, compressor return superheat, and oil separator return oil temperature during the execution of the disturbance mode; determining whether to exit the disturbance program based on the exhaust temperature and the execution duration of the disturbance program during defrosting and oil return modes; and automatically exiting the disturbance program when the air conditioning system exits the defrosting or oil return mode.

The present application provides an air conditioner outdoor unit and an air conditioner unit. The air grille assembly includes a grille body and an air grille plate installed on the grille body. A heating element is arranged on the air grille plate at the lower part of the grille body, and the heating element is used to heat the lower part of the heat exchanger during defrosting. In view of the problem that the lower part of the heat exchanger is more prone to frost and more difficult to defrost in the prior art, the technical solution of the present invention is to arrange a heating element on the air grille plate at the lower part of the grille body. During defrosting, the heating element can be used to heat the lower part of the heat exchanger, thereby helping to improve the defrosting efficiency of the lower part of the heat exchanger, ensuring the efficient operation of the air conditioner, and improving the comfort of the user.

The invention discloses a microcapsule intelligent response type super-hydrophobic anti-frosting coating as well as a preparation method and application thereof. According to the preparation method, the anti-freezing agent is encapsulated in the microcapsule with specific responsiveness and is dispersed in the super-hydrophobic coating system, so that the defects that the anti-freezing agent is easy to lose and low in utilization rate are overcome. When the surface of a coating prepared from the coating is frosted to generate mechanical stress or the environment temperature reaches a specific threshold value, the microcapsules are broken, and the antifreeze agent is released at the root of ice crystals at a fixed point, so that on-demand supply is realized, and the effective frost prevention service life of the coating is greatly prolonged. The microcapsule intelligent response type super-hydrophobic anti-frosting coating has wide application prospects in air conditioner heat exchanger fins, refrigerator evaporators, wind driven generator blades, aircraft wings, unmanned aerial vehicle propellers, solar photovoltaic panels, outdoor sensor shells or electric power insulators.

The present application relates to a defrosting system, refrigeration equipment and air cooler. The defrosting system includes: a compressor, an evaporator, a throttling device, a condenser and a cold storage device. The compressor, evaporator, throttling device and condenser are connected in a circular manner to form a refrigerant circuit. The cold storage device is arranged close to the evaporator and connected in parallel with the evaporator between the throttling device and the compressor; when the evaporator is refrigerating, the cold storage device is connected with the throttling device and the compressor, and stores the cold of the low-temperature refrigerant flowing through itself; when the evaporator is defrosted, the cold storage device uses its own stored cold to neutralize the heat emitted by the evaporator. Compared with the prior art, the present application is conducive to maintaining the stability of the cold storage temperature and helps to ensure the storage quality of the goods. Moreover, the cold storage device can circulate and store cold and release cold to neutralize heat, and there is no need to manually replace the new cold storage device after defrosting, which improves the defrosting automation and defrosting efficiency.

The present application relates to an air-conditioning energy-saving heat exchange system, and relates to the technical field of air-conditioning systems, the system comprising: a first air-conditioning unit, a first liquid heat exchange tube G1 connected to a first liquid circulation pipeline, a first refrigerant heat exchange tube G2 and the first liquid heat exchange tube G1 are closely arranged; a second air-conditioning unit, a liquid storage tank and / or a first liquid heat exchange plate, wherein the liquid storage tank is connected to the first liquid circulation pipeline, and the first liquid heat exchange plate is connected to the first liquid circulation pipeline. The liquid flow heat transfer and energy storage device that can be added in the embodiment of the present application can effectively improve the electric energy and heat energy utilization efficiency of the air-conditioning system, improve the defrosting effect of the outdoor heat exchanger, enhance the temperature adjustment ability and application range of the air-conditioning system, add indoor liquid heat exchange plates to adjust the indoor temperature, and combine with the original air-conditioning fan operation to greatly improve the user experience.