62results 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 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 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 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 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 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 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 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 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 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.

The present invention provides an intelligent defrosting method and system for energy-saving variable frequency refrigeration and fresh-keeping equipment, which relates to the technical field of refrigeration and fresh-keeping equipment. By integrating an acquisition module, a calculation module, a judgment module, a control module, a thermal fluorine defrost module, an ultrasonic cavitation jet module and an AI visual detection module, accurate and efficient defrosting operation is achieved, and the indoor return air temperature and the evaporator outlet surface temperature can be collected in real time, the frosting temperature difference can be calculated, and whether defrosting is needed can be determined based on the temperature difference. An adaptive defrosting control strategy is adopted to select the optimal defrosting time and area to reduce energy consumption. The thermal fluorine defrost technology is combined with variable frequency control to reduce heat generation and warehouse temperature fluctuations, while the ultrasonic cavitation jet technology accelerates frost shedding through sound pressure to achieve a water-saving and environmentally friendly defrosting effect. The AI ​​visual detection module integrates multiple technologies to accurately measure the frost layer and provide decision support for the control module. The system improves defrosting efficiency and reduces energy consumption.

The application provides a defrosting device, a defrosting control method and a storage medium, which comprises a low-temperature space in a refrigeration chamber, a semiconductor module with a cold end and a hot end, a special air duct, a heat dissipation fan, a first temperature sensor, a second temperature sensor and a controller. In response to the start of the defrosting function, the controller controls the evaporator to stop cooling, controls the semiconductor module to be powered on and controls the heat dissipation fan to start, acquires a first evaporator temperature value detected by the first temperature sensor, controls the semiconductor module to be powered off when the first evaporator temperature value reaches a first preset temperature value, controls the evaporator to resume cooling, acquires a second evaporator temperature value detected by the first temperature sensor and a low-temperature space temperature value detected by the second temperature sensor, and controls the heat dissipation fan to stop when the second evaporator temperature value is lower than a second preset temperature value and the low-temperature space temperature value is lower than a third preset temperature value. The application solves the problems of low defrosting efficiency and high temperature rise in the refrigeration chamber in the prior art.

This utility model provides a uniform defrosting structure for a defrosting heating element in a frost-free refrigerator, relating to the field of defrosting equipment technology. It includes a heating box, a connecting frame, an air diffuser, a heating element, a heat exchanger, a fan motor, and a main frame. The main frame has circular mounting holes on both sides, and each heating element has a set of circular heads on both sides, which are mounted on the sides of the main frame. The heat exchanger has a series of through-holes inside, and one side of the heating element is mounted on one side of these holes. The connecting frame has two sets of threaded circular holes on one side, and each side of the heating box has a set of connecting plates with a set of circular holes. The connecting plates on both sides of the heating box are fastened to one side of the connecting frame with screws. The mounting of the heating element to the main frame and the grouped electrical connections of the heat exchanger allow for partial replacement, reducing maintenance costs. The fan motor accelerates hot air diffusion, expanding the range and improving efficiency. The connecting frame optimizes the path, reducing blind spots and ensuring uniform defrosting.

The utility model discloses a heat pump system, which is characterized in that a heat storage device is added, is connected with a second outdoor pipeline of an outdoor heat exchanger through a second circulating device, can exchange energy with the outdoor heat exchanger and store heat released by the outdoor heat exchanger, and is connected with a first water tank through a third circulating device; the heat storage device can exchange heat with the first water tank, and therefore heat recycling of the outdoor heat exchanger is achieved through the heat storage device.

The utility model discloses an air energy heat pump structure convenient for defrosting and drainage, which comprises a heat pump body, a top cover, a first collecting frame and a second collecting frame, the bottom surface of the top cover is connected with an inclined pipe arranged around the periphery of the heat pump body, and the wall body of one side of the inclined pipe close to the heat pump body is uniformly communicated with a plurality of sprayers; a heating water pipe communicating with the inclined pipe in a matched mode is fixedly arranged in the center of the top face of the top cover, the first collecting frame and the second collecting frame are symmetrically arranged close to the outer wall of the periphery of the heat pump body, and collecting grooves are fixedly formed in the inner walls of the bottom ends of the first collecting frame and the second collecting frame. The bottom ends of the first collecting frame and the second collecting frame are each provided with a treatment water tank communicating with the collecting groove in a matched mode. Compared with the prior art, the heat pump has the advantages that hot water is sprayed to the frosting positions around the heat pump body from the sprayers through the heating water pipe to be melted, the melted water and the used hot water are collected into the processing water tank through the set of collecting frames, and defrosting and drainage are facilitated.

The utility model discloses a conversion device based on hot fluorine defrosting, and relates to the technical field of refrigeration and freezing. The device comprises a swivel box, the right side of the swivel box is fixedly connected with a heater, the top of the heater is fixedly connected with a controller, the bottom of the swivel box is fixedly connected with a drainage pipe, the front face of the swivel box is fixedly connected with a supporting cover through screws, and the front face of the supporting cover is provided with three cold air assemblies. The three cold air assemblies comprise the same parts, and each cold air assembly comprises an assembling frame. According to the utility model, the heater is arranged, specifically, hot fluorine defrosting operation can be carried out on the reaction tube through the heater, and air is discharged out of the equipment through the drain pipe, so that the fan blade exchanges air in the swivel box, the defrosting efficiency can be improved, and meanwhile, the protective guard is arranged on the front surface of the fan blade to protect the cold air assembly; and hot fluorine defrosting can be automatically carried out. And the efficiency is improved through the fan blades.

The utility model discloses a defrosting device of an air filter, and relates to the technical field of air filters. The device comprises two reinforcing rings, a filter screen component, a copper gauze component, a heating pipe and a protective cover, the reinforcing rings are arranged on the upper end face and the lower end face of the defrosting device correspondingly. The filter screen assembly comprises a high-strength plastic framework filter screen on the inner layer and a scrapped air filter outer screen on the outer layer. The copper gauze element assembly comprises a 120-mesh copper gauze element and a thin stainless steel wire shaping frame embedded into the edge of the 120-mesh copper gauze element, the heating pipe is arranged in the circumferential direction of the middle of the defrosting device and filled with electric heating wires, and cooling fins are arranged on the outer surface of the heating pipe. According to the utility model, the 6-10 heating pipes are uniformly distributed along the circumference and are matched with the radiating fins on the outer surface, so that heat can be quickly and uniformly radiated, frost layers at all parts of the filter element can be synchronously melted, and the defrosting efficiency is effectively improved.

The invention discloses an air source water heater suitable for aquaculture, belonging to the field of water heaters. An air source water heater suitable for aquaculture comprises a cabinet, a fan, a compressor, and a heat exchanger; there are two heat exchangers, which are arranged in a "V" shape; a defroster is arranged on the heat exchanger; the defroster comprises an outer shell and a defrost roller rotatably connected in the outer shell; the defrost roller is parallel to the heat exchanger; a plurality of scraping mechanisms are evenly arranged on the defrost roller along the circumference; the scraping mechanism comprises a defrost knife and an ice-removing knife which slide radially along the defrost roller; scraping teeth are evenly arranged at the end of the ice-removing knife; there is a gap between two adjacent scraping teeth; the movement directions of the defrost knife and the ice-removing knife are opposite. This scheme cleans the frost and ice condensed on the surface of the heat exchanger by arranging a defroster, avoids the frost and ice from affecting the normal operation of the heat exchanger, and does not require the air source water heater to be shut down, thereby improving the working efficiency of the air source water heater.

The invention discloses an air conditioning unit with a defrosting mechanism in the technical field of air conditioning unit defrosting, which comprises a casing, an evaporator and a compressor are arranged in the casing, a heat absorbing pipe is wound on the outer side of the compressor, one end of the heat absorbing pipe is fixedly connected with an adjusting mechanism, a pump and an induced draft fan are mounted on the adjusting mechanism, and a speed regulating box is mounted on the casing. A first gear is installed on the speed regulating box, the speed regulating box is in transmission connection with the regulating mechanism, a flow guide groove is formed in the machine shell, a moving mechanism is arranged in the machine shell, a driving mechanism is installed in the machine shell, the driving mechanism is movably connected with the first gear and the moving mechanism, a moving frame is in threaded connection with the moving mechanism, and wiping cotton is installed on the moving frame. A plurality of nozzles are arranged at one end of the flow guide pipe, an extrusion mechanism is arranged in the flow guide groove, and a filtering mechanism is installed on the lower side of the machine shell, so that the cleanliness of the equipment is further guaranteed, and meanwhile, the cleaning efficiency of the equipment is improved.

This application discloses a vehicle refrigeration unit and its refrigeration system, belonging to the related technical field of vehicle refrigeration units. It includes an installation frame with a housing and an inner housing detachably mounted on both sides. An air outlet assembly is located at the top of the inner housing, and the assembly includes a vertically structured mounting plate. External and internal air outlets are respectively located on the two sides of the vertically arranged mounting plate. The beneficial effects of this application are: the refrigerant from the condenser is directly split. During this splitting, one path is throttled and cooled by a throttling device before entering the economizer, while the other path, the un-throttled mainstream refrigerant, enters the economizer. The two refrigerants undergo sufficient heat exchange within the economizer. The throttled, low-temperature refrigerant can more effectively absorb heat from the mainstream refrigerant, thereby significantly increasing the subcooling of the mainstream refrigerant. This results in a lower dryness and higher liquid ratio of the refrigerant entering the evaporator, leading to a higher cooling capacity per unit mass of refrigerant.

The utility model relates to the technical field of refrigeration, in particular to an evaporator and a refrigerator. The evaporator comprises a refrigerant pipe, a supporting assembly and a heating assembly. The supporting assembly comprises a first supporting piece and a second supporting piece, wherein the first supporting piece and the second supporting piece are arranged in a spaced mode in the first direction. The first supporting piece and the second supporting piece are connected to the two sides, arranged in the first direction in a spaced mode, of the refrigerant pipe correspondingly. The heating assembly comprises a first heating piece fixedly arranged on the first supporting piece and a second heating piece fixedly arranged on the second supporting piece. The defrosting device is used for overcoming the defects of long defrosting time and low defrosting efficiency of the evaporator in the prior art, and the defrosting efficiency can be improved.