425results about How to "Heating up fast" patented technology

The invention belongs to the technical field of preparation of boron carbide ceramics, and particularly relates to a preparation method of high-purity porous boron carbide ceramics based on high-frequency induction heating, under the condition that a sintering aid is not added, a plunger is forced to move downwards due to volume expansion caused by CO2 generated by a melt, so that boron carbide powder is pressurized, the effect of hot pressing sintering can be achieved, and the effect of high-purity porous boron carbide ceramics can be achieved. The problems of low yield and high cost caused by the use of a hot-pressing sintering furnace can be avoided, the comprehensive performance of the prepared boron carbide ceramic can be improved, the process is easy to control, and the method is suitable for mass production of the boron carbide ceramic round rod for the high-temperature gas cooled reactor nuclear control rod; the prepared boron carbide ceramic has the advantages of pure phase, high porosity, uniform pore structure and stable mechanical property, especially has very good pore connectivity, and can ensure timely discharge of helium and improve the safety of the nuclear control rod when being used as a high-temperature gas cooled reactor nuclear control rod.

The invention discloses a temperature adjusting device and an integrated chip testing device, the temperature adjusting device is applied to an integrated chip testing scene, the temperature adjusting device comprises a first semiconductor chilling plate, the first end face of the first semiconductor chilling plate is configured to be attached to one side of a to-be-tested integrated chip, and the second end face of the first semiconductor chilling plate is configured to be attached to the other side of the to-be-tested integrated chip; the heat exchanger is used for absorbing heat of the to-be-tested integrated chip or transferring heat to the to-be-tested integrated chip; the heat exchange assembly is attached to the second end face of the first semiconductor chilling plate and used for conducting heat exchange with the first semiconductor chilling plate. According to the scheme, the speed of refrigerating or heating the to-be-tested integrated chip by the semiconductor refrigerating sheet can be increased, so that the to-be-tested integrated chip is cooled or heated more quickly.

The invention discloses a preparation method of a coal gangue composite grouting material, which comprises the following steps: step 1, preparing coal gangue aggregate: drying crushed coal gangue, and screening to obtain the coal gangue aggregate consisting of fine aggregate and coarse aggregate; step 2, preparing a coal gangue gel material: uniformly mixing the crushed coal gangue with graphite, performing microwave activation, adding a chemical activator, mixing, and grinding to obtain the coal gangue gel material; and mixing the coal gangue gel material and the coal gangue aggregate, adding water, and uniformly stirring. According to the method, the technological process is simple and easy to implement, efficient utilization of mine solid waste is achieved, the mining cost is greatly reduced, the grouting filling material with the excellent mechanical property is successfully obtained, and progress and development of the coal gangue based grouting technology are powerfully promoted.

The invention relates to the technical field of solar energy application, in particular to a PVT photovoltaic water-based heat cycle system which comprises a photovoltaic assembly used for converting solar energy into electric energy, a photo-thermal assembly used for utilizing heat energy generated by the photovoltaic assembly and a heat cycle assembly used for circularly supplying heat to a room. The photo-thermal assembly is fixedly connected to the back face of the photovoltaic assembly, the thermal circulation assembly is connected with the photo-thermal assembly, heat-conducting media are arranged in the thermal circulation assembly and the photo-thermal assembly, the photovoltaic assembly and the photo-thermal assembly are integrally connected, the photovoltaic assembly and the photo-thermal assembly are placed outdoors, the thermal circulation assembly is placed indoors, the photovoltaic assembly converts solar energy into electric energy, and the electric energy is stored in the photovoltaic assembly. The photovoltaic assembly generates a large amount of heat, the photo-thermal assembly absorbs the heat on the back face of the photovoltaic assembly, the photo-thermal assembly conducts the heat to the thermal circulation assembly, the thermal circulation assembly heats low-temperature air and blows out the low-temperature air, the indoor temperature can be rapidly increased, and the photovoltaic assembly can be cooled while the heat-conducting medium circulates.

The utility model discloses a metal belt material and a honeycomb heating body with the same, and the metal belt material comprises a characteristic belt which is provided with a plurality of wave crest parts and wave trough parts, the wave crest parts and the wave trough parts are alternately arranged, first fire holes are formed between the adjacent wave crest parts, and second fire holes are formed between the adjacent wave trough parts; the partition structure comprises a first partition piece and / or a second partition piece, the first partition piece is arranged at the lower end of each first fire hole, and the first partition piece divides the lower end of each first fire hole into at least two small holes; a second partition piece is arranged at the lower end of each second fire hole and divides the lower end of each second fire hole into at least two small holes. The burner is simple in structure, convenient to manufacture, high in porosity and capable of reducing the tempering probability and improving the heat intensity of the fire holes.

The utility model discloses a metal belt material and a honeycomb heating body thereof, the metal belt material comprises: a characteristic belt, which is provided with a plurality of wave crest parts and wave trough parts arranged alternately, fire holes are formed between adjacent wave crest parts, and fire holes are formed between adjacent wave trough parts; the lower end of the characteristic belt is connected with the vertically-arranged separation belt, the separation belt transversely penetrates through each wave crest part, each wave trough part and each fire hole, and the lower end of each fire hole is divided into at least two small holes by the separation belt. The metal belt material is simple in structure, high in porosity and capable of reducing the tempering probability and improving the heat intensity of area fire holes.

The invention relates to a guide vane structure for thermal disassembly and assembly of a segmental self-balancing multistage pump impeller, the structure comprises a reverse guide vane, a reverse impeller, an impeller snap ring and a reverse middle section, the reverse impeller is in interference fit with a pump shaft, during installation, the reverse impeller is sleeved on the pump shaft after being heated, and the reverse guide vane is pressed down, so that a rear cover plate of the reverse impeller is in contact with the reverse guide vane, and the reverse guide vane is fixed on the reverse impeller; an impeller clamping ring is installed, then the reverse impeller is pulled upwards to the positioning position of the impeller clamping ring, and hot sleeving of the reverse impeller is completed; and then the reverse middle section is installed, the reverse guide vane is tightly held through a step spigot on the reverse middle section, and the reverse middle section and the reverse guide vane are in micro interference fit. When the impeller of the pump needs to be maintained and replaced, the guide vane can be disassembled in the radial direction after the reverse middle section is removed, the reverse impeller hub is exposed in the operable range, then the reverse impeller hub is rapidly and circumferentially heated through an air gun, the reverse impeller hub is rapidly heated and expanded, and the thermal disassembly and assembly performance of the impeller and a shaft in the self-balancing type multi-stage pump is achieved; and the stability and reliability of water pump operation are ensured.

An existing sintering flue gas treatment process additionally provided with a CO removal device is improved, the flue gas purification process and system for synergistically removing multiple pollutants are provided, SO2, NOx, dust and CO are efficiently removed, pollutants such as SO3, HCl, HF and heavy metal can be efficiently and synergistically removed, long-term stable operation of a CO catalyst can be ensured, and the service life of the flue gas purification system is prolonged. And meanwhile, the system stability under different CO concentration fluctuations can be adapted, the CO device can be ensured to operate in a high-efficiency state for a long time, and meanwhile, the effects of saving energy and reducing carbon are achieved.

The present invention discloses a thermal analyzer with low-temperature adsorption function, including an axial flow fan, a radiator, a heat preservation box, a refrigeration sheet, a cold storage sheet, a six-way valve, a driving motor, a carrier gas flow controller, a secondary adsorption tube, a primary adsorption tube, a primary heating body, a purge gas flow controller, a vent pipe, a detection device and a heating wire. The axial flow fan is provided with a radiator, and the axial flow fan is provided with a heat preservation box. The heat preservation box is provided with a refrigeration sheet and a cold storage sheet, and the cold storage sheet is provided on the refrigeration sheet. A thermal analyzer with low-temperature adsorption function is manufactured by adopting the above technical scheme. The secondary thermal analysis technology is adopted to make the peak shape sharper and improve the detection limit. Since the secondary analysis device has the advantages of small size, low-temperature concentration and rapid heating, the system error is reduced, the unit concentration is increased, and the detection limit is greatly improved.

The invention relates to the technical field of composite material bonding, in particular to a large-thickness composite material multi-layer bonding tool and process, the large-thickness composite material multi-layer bonding tool is used for assisting bonding of composite material plates, the bonding tool comprises an upper pressing plate and a lower bottom plate which are arranged in parallel, the upper pressing plate and the lower bottom plate are connected through a stand column, and the upper pressing plate is connected with a hydraulic device and used for applying pressure; a first heating plate is arranged on the face, away from the hydraulic device, of the upper pressing plate, and a second heating plate is arranged on the face, away from the hydraulic device, of the lower bottom plate. According to the large-thickness composite material multi-layer bonding tool and process, the bonding face with the uniform roughness is manufactured through treatment of the demolding cloth, the thickness of the adhesive layer is controlled through the glass beads, the upper pressing plate and the lower pressing plate of the tool are provided with the heating plates, the bonding face is rapidly heated and cured, the heating time of a large-thickness product is shortened, and the production efficiency is improved. The problems that the composite material in the middle of the structure is heated unevenly and the curing degree is insufficient are solved, and large-thickness composite material products can be rapidly and effectively manufactured.

The invention is used for the technical field of 3D printers, and discloses a model 3D printer for cultural and creative product design, the model 3D printer comprises a base, a mounting frame is fixedly arranged at the upper end of the base, a transverse moving linear module and a lifting linear module are mounted at the upper end of the mounting frame, and a printing nozzle is fixedly mounted on the outer surface of the lifting linear module; a longitudinal moving linear module is installed on the outer surface of the base, a printing base plate is installed at the upper end of the longitudinal moving linear module, the printing base plate is slidably connected with the base, a demolding structure is arranged on the surface of the printing base plate, and deformation damage to a model in the demolding process is reduced in a mode of staged separation from the model; and the integrity of the model is ensured. According to the model 3D printer for cultural and creative product design, the mode that after product printing is completed, the supporting plate and the printing base plate are alternately separated from a product is adopted, so that the separating force borne by the product at a time can be reduced, and the product is not prone to deformation in the separating process.

The utility model provides a sludge drying machine, which relates to the field of drying machines, and comprises a box body with an inlet and an outlet, and a plurality of chain belt components stacked in the box body, the conveying direction of any chain belt assembly is opposite to that of the adjacent chain belt assembly, any chain belt assembly deviates relative to the adjacent chain belt assembly, and the deviation part forms a material receiving area; when each chain belt assembly independently operates, sludge entering the chain belt assembly through the inlet is thrown to the material receiving area of the adjacent chain belt assembly in the conveying process, and is transferred to the outlet under repeated throwing of the multiple chain belt assemblies; according to the utility model, the sludge falling from the first opening to the first chain belt assembly is transferred to the second opening after being thrown for multiple times, and during the throwing period, the hot atmosphere in the box is assisted by multiple times of line throwing actions, so that the technical problem that the sludge is hardened and caked can be effectively avoided.

The invention discloses a photo-thermal biomass cellulose hydrogel preparation method, which sequentially comprises: S1, uniformly mixing natural biomass cellulose, sodium hydroxide, a cross-linking agent, a photo-thermal conversion material and a network construction material to obtain a JanusA material, adding the JanusA material into a hydrophobic material, and uniformly mixing to obtain a JanusB material; and step S2, freezing the Janus B material prepared in the step S1, so as to obtain the Janus photo-thermal natural biomass cellulose hydrogel. The 3DJanus natural biomass cellulose hydrogel disclosed by the invention has excellent photo-thermal performance: the temperature can be quickly raised under the irradiation of sunlight, and water is converted into water vapor, so that efficient interface evaporation is realized.

The invention discloses an aluminum nitride high-temperature workpiece machining waste heat utilization device, and belongs to the technical field of aluminum nitride ceramic production. An aluminum nitride high-temperature workpiece machining waste heat utilization device comprises a waste heat utilization box body and a furnace body, the waste heat utilization box body is sequentially provided with a feeding cavity, a transfer cavity, a waste heat utilization cavity channel, a feeding and discharging cavity, a heat dissipation cavity and a discharging cavity from an aluminum nitride ceramic inlet end to an aluminum nitride ceramic discharging end, and the furnace body is arranged at the top of the waste heat utilization box body and provided with a heat dissipation cavity. The bottom of the furnace body communicates with the feeding and discharging cavity. Through the design of the multi-stage waste heat utilization cavities and the heat dissipation cavities, gradual preheating and gradual cooling are achieved, the sintering efficiency is improved, meanwhile, workpieces in the furnace body can be replaced without waiting for cooling when replaced, hot air backflow can be used after replacement, the workpieces can be further rapidly heated after preheating, and the sintering efficiency is improved. The waste heat utilization effect is achieved, and the working efficiency is further improved.

The embodiment of the invention discloses a control method of fabric treatment equipment, electronic equipment and the fabric treatment equipment, and the control method comprises the steps: responding to a steam nursing demand of the fabric treatment equipment under the condition that a steam generation device fails; washing water is injected into the barrel, and the water temperature of the washing water in the barrel is obtained; the air temperature in the air outlet pipeline is obtained; under the condition that the water temperature of the washing water and the air temperature in the air outlet pipeline reach target conditions, the fabric treatment equipment is controlled to generate airflow, and the barrel is controlled to conduct steam nursing action. According to the technical scheme, when the steam generating device breaks down and a user needs to use the steam nursing function of the fabric treatment equipment, the fabric can be nursed without waiting for maintenance of the steam generating device.

The invention relates to the technical field of new energy automobiles, in particular to a battery box and an automobile battery temperature control system. The battery box body comprises a box body, an upper-layer heating film, a lower-layer heating film, a plurality of upper-layer battery cells and a plurality of lower-layer battery cells; the box body has a thickness direction and comprises a partition plate, an upper-layer groove body and a lower-layer groove body, wherein the upper-layer groove body and the lower-layer groove body are separated by the partition plate and distributed in the thickness direction. The plurality of upper-layer battery cells are arranged in the upper-layer groove body, the plurality of lower-layer battery cells are arranged in the lower-layer groove body, and the thickness direction of the upper-layer battery cells and the thickness direction of the lower-layer battery cells are both parallel to the thickness direction of the box body; the upper-layer heating film is attached to the upper surfaces of the plurality of upper-layer battery cells, and the lower-layer heating film is attached to the lower surfaces of the plurality of lower-layer battery cells. According to the battery box body and the automobile battery temperature control system, the problem that an existing battery pack rapid heating mode is low in heating efficiency is solved.

The invention relates to the technical field of copper wire annealing devices, in particular to a cable copper wire annealing device which comprises a rack and two copper wire bodies, a motor is installed on the rack, a chain belt is installed at the output shaft end of the motor in a transmission mode, and an electric heating frame, a reciprocating guide module and a water cooling mechanism for conducting water cooling on the copper wire bodies are installed on the rack. The reciprocating guide module is in transmission connection with a reciprocating twisting frame capable of moving left and right in a reciprocating mode, the positions, corresponding to the two copper wire bodies, of the reciprocating twisting frame and the electric heating frame are each rotationally connected with two symmetrically-arranged electrode wheels, and a copper wire tensioning mechanism and a shaking generation component which are matched with the reciprocating guide module are installed on the rack. The cable copper wire annealing device has the beneficial effects that when the cable copper wire annealing device works, annealing, water cooling, oxide removing, water cooling and rounding shaping operations of cable copper wires can be integrally achieved, and through the integrated functions, the functionality of the cable copper wire annealing device is effectively improved.

The invention belongs to the technical field of water heating devices, discloses a dual-energy water heating device and a control system thereof, and is used for solving the problems that an existing dual-energy water heating device combining gas heating and heat pump heating is low in heat exchange efficiency, too complex to control and not high in intelligence. The dual-energy water heating device is provided with the gas heating system and the heat pump heating system which are independent, two sets of independent heat exchange systems are arranged, the two heating systems do not interfere with each other, independent or combined heating can be achieved, operation control over the dual heating systems is simpler, and the energy consumption is reduced. The two sets of heat exchange systems are adopted for respective heat exchange, so that long-acting work of the heat exchange systems can be guaranteed, and the heat exchange efficiency of different heat exchange systems in different heating systems can be improved; according to the control method for the dual-energy water heating device, different requirements of users and external environment conditions can be responded, and the dual-energy water heating device is automatically controlled to operate in the most suitable heating mode.

The invention discloses a Joule thermal shock automation device and a Joule thermal shock method. The Joule thermal shock automation device comprises a first station, a second station, a third station, a fourth station, a fifth station and a sixth station which are arranged in sequence. The manipulator, the graphite sintering table, the conveyor belt and the power supply are combined for heating, so that automatic batch production of materials is realized.

The present invention discloses a strain of Pseudocanthomonas NJAU‑273, which is classified and named as Pseudocanthomonas Pseudoxanthomonas sp., deposited in the General Microbiology Center of China Microorganism Culture Collection Committee, with a deposit date of March 25, 2024 and a deposit number of CGMCC No.30114. The present invention discloses its application in straw composting. The present invention also discloses the microbial agent prepared by the present invention and the application of the microbial agent in straw composting. Compared with the treatment without inoculation of microbial agent, the treatment with inoculation of NJAU‑273 microbial agent effectively promotes the increase of the temperature of the compost pile, accelerates the composting process, improves the germination index of the compost product, and increases the total nutrients of the compost product.

The invention discloses an extrusion production process of a 7-series aluminum alloy special-shaped profile, which comprises the following steps: S1, heating an aluminum bar, an extrusion cylinder and an extrusion die, and placing the aluminum bar in the extrusion cylinder; s2, extruding the aluminum bar at a constant speed, heating a profile discharged from an outlet of the extrusion die to a solid solution temperature, and carrying out on-line solid solution; s3, on-line quenching is conducted on the profile obtained after solution treatment in the S2; s4, performing two-stage aging heat treatment on the quenched profile obtained in S3; and S5, shaping to obtain a special-shaped profile finished product. The extrusion production process of the 7-series aluminum alloy special-shaped profile comprises the following steps: heating a profile discharged from an outlet of an extrusion die to a solid solution temperature; on the basis of the residual heat of the extruded profile, the heated area at the minimum wall thickness is large, and the temperature rise is fast; the temperature rise of the position with the large wall thickness is slow, the plasticity and the elongation of the aluminum alloy are improved through online solid solution, internal stress is eliminated, the crack generation probability is reduced, and then the yield of extrusion production of the special-shaped profile is improved.

The invention relates to the technical field of batteries, in particular to a battery cell and a battery. The battery cell comprises a battery cell inner layer area and a battery cell outer layer area from the center to the edge of the battery cell; positive plates of the battery cell comprise a first positive plate and a second positive plate, the first positive plate is arranged in an inner layer area of the battery cell, and the second positive plate is arranged in an outer layer area of the battery cell; the first active material layer of the first positive plate comprises a first binder; a second active material layer of the second positive plate comprises a second binder; the swelling ratio of the first binder is greater than that of the second binder; the adhesive force between the first positive plate and the diaphragm is recorded as A1, the adhesive force between the second positive plate and the diaphragm is recorded as A2, and A1 and A2 meet the following relational expression:-1 < = A1-A2 < = 4. The positive plate active material layers corresponding to the inner layer area and the outer layer area in the battery cell adopt different binders, so that the bonding effect of the positive plate and the diaphragm in the whole cell package, the electrolyte wettability and the production efficiency can be balanced.

The numerical control oxygen lance comprises a tubular lance body, and the tubular lance body comprises a lance body front section and a lance body rear section; wherein the gun body front section is used for being inserted into a blast furnace tap hole and stretching into a blast furnace hearth, and the gun body rear section is located outside the tap hole; an air inlet connector is formed in the rear section of the gun body; the rear section of the tubular gun body is provided with a connecting plate, the front end of the connecting plate blocks the rear section of the tubular gun body, and the rear end of the connecting plate is provided with a connector; wherein the tubular gun body is used for conveying mixed gas introduced from the gas inlet connector into a blast furnace hearth from the front section of the gun body; according to the blast furnace tapping hole, the hole is formed in the blast furnace tapping hole, and the tubular gun body extends into the hole, so that a sufficient gas source can be directly provided for combustion of coke at the bottom of the blast furnace, sufficient combustion of the coke is ensured, and the temperature of the blast furnace is rapidly increased.

The invention discloses a honeycomb-shaped alginic acid oil gel fabric for collecting water in the atmosphere and a preparation method of the honeycomb-shaped alginic acid oil gel fabric, and belongs to the field of water collection. The honeycomb-shaped alginic acid oleogel fabric is obtained by mixing sodium alginate, a photothermal conversion material (carbon black / graphene / Mxene) and deionized water, spinning, replacing by polyhydric alcohols such as glycerol and weaving by a weaving machine. Under the relative humidity of 30%, 60% and 90%, the moisture absorption efficiency of the honeycomb-shaped alginic acid oil gel fabric can reach 1.95 g / g, 3.92 g / g and 5.65 g / g respectively. The preparation method is simple and convenient to operate, and the prepared honeycomb-shaped alginic acid oil gel fabric for atmospheric water collection has the advantages of high moisture absorption and evaporation rate and high long-term stability, can be used for atmospheric water collection, solves the problem of lack of water resources in arid and semi-arid regions, and has potential commercial value and application prospect.

The utility model relates to the field of indoor temperature and humidity control, in particular to an indoor constant temperature and humidity control device. The indoor constant temperature and humidity control device comprises a shell, first fans, a heating plate and a refrigerating assembly, the first fans distributed left and right are installed on the upper portion in the shell, the heating plate is installed on the upper portion in the shell, and the refrigerating assembly is installed in the shell. By arranging the first fan, the heating plate, the refrigerating assembly and the like, the second fan rotates to roll indoor hot air or cold air into the middle of the interior of the shell, the refrigerating assembly or the heating plate operates to cool or heat the rolled hot air or cold air, and therefore the cold air or the hot air is obtained; and the first fan rotates to discharge cold air or hot air into the upper part in the shell, and the third fan rotates to blow the cold air or hot air into a room, so that the effect of cooling or heating the room is realized, the device is suitable for summer and winter, and the practicability of the device is improved.

The utility model relates to the technical field of sizing machines, and discloses a sizing machine size tank heating device which comprises a size tank, a heating cavity is reserved in the size tank, one side face of the size tank is fixedly connected with a steam inlet, the other side face of the size tank is fixedly connected with a steam outlet, and the bottom of the size tank is fixedly connected with a supporting seat. And the top of the inner wall of the supporting seat is fixedly connected with a motor. The utility model has the following advantages and effects: steam is led out from the steam outlet, when slurry is supplemented in the slurry tank, the motor is started and drives the rotating shaft of the motor to rotate, so that the stirring blades are driven to rotate to stir the slurry, the slurry is conveniently fused and uniformly heated, and meanwhile, the heating rod is started to heat the slurry, so that the heating efficiency is improved; and the stirring effect is improved through the stirring rods, the phenomenon that the size sinks to the bottom is prevented, yarn sizing is better facilitated, and heating is uniform during sizing.

The utility model discloses an inductive heating type low carbon stove structure, including metal muffle, front gas seal, rear gas seal, water -cooling induction coil and induction power supply, the front gas seal and rear gas seal of two ends fixed mounting of metal muffle are described, water -cooling induction coil all enclose in metal muffle outer surface, induction power supply is connected with water -cooling induction coil. The utility model discloses good solution traditional heating mode through the problem of low efficiency, big heat loss of heat loss, is a kind of energy -conserving type low carbon muffle structure, and control, feedback is more direct sensitive and high accuracy.

The utility model relates to a cooking machine technical field, concretely discloses a sandwich machine. The sandwich machine, including the upper machine group and the lower machine group, all are provided with cooking assembly in the upper machine group and the lower machine group respectively, and the cooking assembly includes the heating body, the energy -conserving reflection board and the cooking surface, and the heating body is carbon fiber heating tube, through such structural design mode, carbon fiber heating body directly carries out the heating to the cooking surface, and through the energy -conserving reflection board mirror surface reflection of relative setting, the thermal energy of heating body is further reflected to the cooking surface, and the heating efficiency can be greatly improved through the heat radiation, the rapid heating can be realized, and the maximum degree heat energy utilization is realized. Meanwhile adopt detachable heating body, can be convenient to maintain after the heating tube damage or glass damage, save the maintenance cost and reduce the maintenance difficulty.

The invention discloses a triple-effect evaporation treatment device and method for salt-containing sewage, and belongs to the technical field of sewage chemical treatment. The invention relates to a triple-effect evaporation treatment device for salt-containing sewage. The triple-effect evaporation treatment device comprises an external heat source, and a first-effect reaction unit, a second-effect reaction unit and a triple-effect reaction unit which are connected in sequence, the first-effect reaction unit is provided with a first-effect evaporation chamber, the second-effect reaction unit is provided with a second-effect evaporation chamber, the third-effect reaction unit is provided with a third-effect evaporation chamber, and the first-effect evaporation chamber is connected with an external heat source to evaporate sewage; the first-effect reaction unit is one or two of the first-effect reaction unit, the second-effect reaction unit and the third-effect reaction unit, the heater is arranged in an evaporation chamber of the first-effect reaction unit, the heater is approximately annular, and an area enclosed by the annular heater is a first area; the annular heater and the inner wall of the evaporation chamber form a second area; and the first region is communicated with the second region. Self-circulation of sewage in the evaporation chamber is realized, the evaporation rate and the heat transfer rate are high, the energy consumption is low, the equipment manufacturing is simple, and the like.

The application provides a dehumidifier and a control method thereof. The dehumidifier comprises a refrigeration system, a water pan, a heating pipe and a regulating valve. The refrigeration system comprises a compressor, a condenser, an evaporator and a fan. The heating pipe is arranged below the water pan. The regulating valve is used for adjusting the flow path of refrigerant and is configured to make the refrigerant flowing out of the compressor directly flow into the condenser through a dehumidification branch during a dehumidification process and make the refrigerant flowing out of the compressor flow into the heating pipe and then flow into the condenser through a drying branch during a drying process. The control method comprises the following steps: obtaining an internal drying instruction of the dehumidifier; switching the regulating valve to the drying branch; closing the fan and controlling the compressor to operate alone. The application has the advantages that the internal mildew and bacterial breeding problems caused by long-time residual condensate after the dehumidifier is stopped can be solved, the dehumidifier blowing out the wind with peculiar smell is avoided, and the use experience of the user is improved.