70 results about "Dry heating" patented technology

The utility model discloses an adjustable tea dryer, which relates to the technical field of tea drying and comprises a drying box and a sealing door arranged on one side of the surface of the drying box, and drying heating blocks are arranged on two sides of the inner wall of the drying box. The sliding effect between the connecting rod and the net frame is utilized, the net frame is pulled out, then tea leaves needing to be dried are flatly laid to the top face of a separation net and then inserted into the collecting net cabinet, at the moment, high temperature is generated in the drying box through the drying heating block, and therefore the tea leaves are dried; a rotating rod drives a circular disc to rotate, a notch formed in one side of the surface of the circular disc is utilized to enable a collecting net cabinet to generate a lifting effect, tea leaves in a net rack are vibrated through lifting, the tea leaves are fully dried, the situation that most devices utilize a roller to dry the tea leaves, and the tea leaves are broken is avoided, and therefore it is guaranteed that the tea leaves cannot be damaged during drying; and the drying integrity of the tea leaves is effectively improved.

The invention provides an anti-dry-burning control method of an evaporator and cooking equipment, and relates to the technical field of smart home, the method comprises the following steps: monitoring a temperature parameter of the evaporator through a temperature sensor in response to a starting operation for the evaporator; calculating a slope parameter corresponding to the temperature parameter; the working state of the evaporator is determined according to the temperature parameter and the slope parameter; and determining a water supplementing strategy of the evaporator based on the working state. According to the anti-dry-burning control method for the evaporator and the cooking equipment, the starting operation for the evaporator can be responded, and the temperature parameter of the evaporator is monitored through the temperature sensor; calculating a slope parameter corresponding to the temperature parameter; the working state of the evaporator is determined according to the temperature number and the slope parameter; the water supplementing strategy of the evaporator is determined on the basis of the working state, so that water can be supplemented to the evaporator in time in the corresponding working state, the phenomenon of dry burning of the evaporator is avoided, and the reliability requirement of cooking equipment such as a steaming oven for dry burning prevention is met.

This invention discloses a device for preventing dry burning and overflow, comprising a base in contact with a pot lid, a measuring and control device disposed on the base for detecting the internal temperature of the pot, and a pair of conductive rings disposed on the edge of the pot lid for contacting the conductive medium inside the pot when overflow occurs. The conductive rings are electrically connected to the measuring and control device. This invention's device for preventing dry burning and overflow has high accuracy in preventing dry burning and overflow, and can issue an alarm signal to cut off the heat source when dry burning or overflow is about to occur or at the initial stage of dry burning or overflow. It has a simple structure and reliable technology.

The present invention discloses an intelligent drying device for wet liquid in solid materials and a method for using the device, which belongs to the technical field of dehumidification and drying. A drying cylinder is fixedly installed on the bracket, the upper surface of the drying cylinder has an opening, and a drying cylinder cover is installed at the opening position by locking, a drying heating plate is installed on the inner wall of the drying cylinder, an outlet pipe is installed through the lower surface of the drying cylinder, and a digital humidity sensor with a temperature sensing probe extending to the inside of the drying cylinder is fixedly installed on the drying cylinder; a power unit, an upper and lower driving unit and a pushing unit are arranged for coordinated use, the power unit realizes the rotation of the toggling blades and the movement of the upper and lower driving units, the upper and lower driving units realize the up and down movement of the carrying box, and cooperates with the pushing unit to realize that the carrying box transports the bottom solid material to the top layer and throws it out, and then cooperates with the rotation of the toggling blades to realize full toggling of the solid material, and cooperates with the drying heating plate to realize highly uniform drying and dehumidification control.

An anti-dry heating tube assembly comprises a heating tube, a temperature detection blind tube and a flange plate, the heating tube and the temperature detection blind tube are respectively arranged on the flange plate in a penetrating mode, a temperature controller is arranged in the temperature detection blind tube, and the anti-dry heating tube assembly further comprises a ceramic heat insulation plate and a connecting piece. The ceramic heat insulation plate is installed on the heating pipe through the connecting piece so as to block heat of the heating pipe. Compared with the prior art, the technical scheme provided by the utility model has the advantages that high temperature can be blocked to prevent the inner container from being damaged, the whole structure is stable, power supply to the heating pipe is prevented from being cut off lagging, and the dry burning prevention effect is good.

The invention discloses an electronic atomization device and a control method thereof.The electronic atomization device comprises a shell assembly and at least two atomization assemblies, the shell assembly comprises an inner shell with an airflow channel and a base, and the airflow channel comprises an airflow outlet section and at least two atomization channel sections; the at least two atomization channel sections are in one-to-one correspondence with the at least two atomization assemblies, one ends of all the atomization channel sections are converged and communicated at the airflow outlet section, and one end, far away from the airflow outlet section, of each atomization channel section is correspondingly provided with one atomization assembly; the base is arranged at the end, away from the airflow outlet section, of the inner shell. The inner wall of the inner shell, the base and the outer walls of all the atomization channel sections define a liquid storage cavity. All the atomization assemblies are further in liquid communication with the liquid storage cavity so as to heat and atomize the liquid in the liquid storage cavity to form aerosol. According to the technical scheme, the problems of waste of liquid in the liquid storage cavity or burnt smell caused by dry heating of the heating body can be avoided as much as possible, and the use experience of a user is improved.

The utility model belongs to the technical field of asphalt mixture stirring equipment, and relates to a counter-flow asphalt reclaimed material heating hot air circulating system which comprises a hot blast stove, a burner is connected to the outer end of the hot blast stove, a discharging box is connected to the front end of the hot blast stove, a drying heating roller is connected to the front end of the discharging box, and the drying heating roller is connected to one side of the bottom of a feeding smoke box. A tail gas air pipe is arranged at the top of the feeding smoke box and connected to a dust remover, and a pure air pipe is arranged on one section of the dust remover and connected to the bottom of the hot blast stove through a circulating fan. According to the utility model, flame is prevented from being in direct contact with the reworked material, asphalt aging is avoided, hot air and material flow are prevented from flowing reversely, the reworked material is flexibly heated, the heat exchange efficiency is high, hot air is recycled, the waste of energy is reduced, and the production cost is saved.

The utility model discloses a drying and heating frame of a clothes dryer, relates to the technical field of drying and heating frames, and provides the following scheme aiming at the problems of less space utilization, non-uniform heating, no internal fuse and temperature controller protection, and insufficient electric conduction and safety of a hardware shell in the prior art: the drying and heating frame comprises a heating wire group, the heating wire group comprises an eyelet, three heating frames, mica fixing strips, a temperature controller, a fuse, a first lead and a second lead, each heating frame comprises a mica fixing strip, a mica supporting plate and a heating wire, the mica fixing strips are placed at the two ends above the mica supporting plate, the heating wire is spirally wound on the mica supporting plate, and the temperature controller is arranged on the heating wire. According to the utility model, the structure is novel, the heating wire is spiral, the distribution of the heating wire is uniform, the space utilization rate is high, and the heating is uniform.

The application discloses a clothes treatment device, a drying heating fault detection method and device and a storage medium, and the method comprises the following steps: determining a fault determination condition according to the air temperature in the current washing tub; and determining the drying heating tube fault according to the air temperature change condition of the drying heating tube under continuous heating, which meets the fault determination condition. In the drying process, the fault determination condition of the drying heating tube is related to the air temperature in the current washing tub, instead of the air temperature change condition after heating in the traditional scheme, which is not used to determine the drying heating tube fault condition, so that the fault determination condition is determined according to the air temperature, the drying heating tube fault misjudgment problem caused by the water in the washing tub due to abnormal conditions in the drying process can be avoided, and then whether the air temperature change condition of the drying heating tube under continuous heating meets the fault determination condition is determined, so that the drying heating tube fault detection accuracy is improved.

The present invention relates to the technical field of household electric appliances. Provided are a method and apparatus for preventing dry heating of a heater on the basis of non-contact sensing, and an electronic device. The method comprises: acquiring, by means of a non-contact temperature sensor, a startup ambient temperature of a heater and an operating ambient temperature of a heated object; on the basis of the operating ambient temperature, predicting whether the heated object is in a dry heating state; when it is predicted, on the basis of the operating ambient temperature, that the heated object has been in a dry heating state, determining, on the basis of the startup ambient temperature and the operating ambient temperature, whether the heated object is in a dry heating state; and when it is determined, on the basis of the startup ambient temperature and the operating ambient temperature, that the heated object has been in a dry heating state, controlling the heater to immediately stop operating. In the present invention, by means of using a non-contact infrared temperature measurement technique, there is no need to be in direct contact with a liquid, thereby avoiding the problem of liquid contamination caused by contact sensors, and also reducing maintenance costs.

The utility model belongs to the technical field of ceramic material production, and particularly relates to raw material crushing equipment for ceramic material production, which comprises a conveying platform, a conveying belt arranged on the inner side of the conveying platform, a crushing box arranged at the output tail end of the conveying platform, a feeding box communicated with the bottom end of the crushing box, and a drying mechanism arranged on the conveying platform. Ceramic production raw materials are dried and heated through the hot air blowers distributed at intervals, redundant water in the raw materials is effectively removed, the raw materials are easier to crush, efficiency is higher, hot air blown out by the hot air blowers is divided through the metal net fixedly connected with the inner wall of the drying box, and the drying effect is better. According to the ceramic material drying device, the situation that wind power is too large and directly blows on ceramic production raw materials is avoided, so that dissipation of dust is reduced, the drying efficiency, the dustproof effect, the conveying stability, the integrated design, the adaptability and the like are excellent, and a powerful guarantee is provided for efficient and high-quality production of ceramic materials.

The utility model relates to battery pole piece production technical field, concretely is a kind of double-face surface coating roll pressing all-in-one machine for solid-state battery pole piece, including unwinding mechanism, surface coating mechanism and roll pressing mechanism by the series connection of several roller, the surface coating mechanism includes primary surface coating mechanism and secondary surface coating mechanism, the side of surface coating of primary surface coating mechanism and secondary surface coating mechanism is equipped with several infrared heating elements to the side after surface coating and carries out drying heating, and the surface coating face of primary surface coating mechanism and secondary surface coating mechanism is respectively on the upper and lower surface of pole piece.The utility model realizes the process of double-face surface coating+roll pressing integration, improves coating quality, efficiency while reducing energy consumption, simplifies equipment.

The invention provides a coal mining screening mechanism which is characterized in that a heating unit is arranged on the surface of the side, attached to a joint, of a bearing cover, a mounting shell is fixed to the surface of the other side of the bearing cover, a driving assembly for forming one-way airflow at the joint hot compress position is arranged in the mounting shell, and the driving assembly absorbs moisture of air passing through the interior of the driving assembly; the two driving exercise assemblies are symmetrically arranged, and the two driving exercise assemblies are arranged on the two sides of the bearing cover and connected to the upper mounting cover and the lower mounting cover; the knee joint bends and stretches to drive the upper mounting cover and the lower mounting cover to rotate relatively, the driving exercise assembly provides resistance, and therefore the weight-bearing exercise effect is achieved. By constructing the constant-temperature drying and heating cavity and combining resistance-resistant exercise, hot compress and exercise collaboration is achieved, and the comfort, functionality and chronic pain relieving effect of knee joints are improved.

The utility model discloses an anti-rust treatment device for alloy anti-skid nails, which belongs to the technical field of alloy anti-skid nails and comprises a base plate, two first supports and two second supports are fixedly mounted on the upper surface of the base plate, a treatment box and a drying box are fixedly mounted between the two first supports, and openings are formed in the upper surfaces of the treatment box and the drying box. A backflow pipe is installed between the treatment box body and the drying box body in a communicating mode, a discharge pipe is installed on the side face of the treatment box body in a penetrating mode, and a drying heating plate is fixedly installed on the inner wall of the drying box body. A cover plate is arranged to be matched with the treatment box body for use, a material frame is detachably mounted below a mounting plate, a rotating plate is driven by a motor to rotate, and a rotating roller is matched with a sliding frame to drive the mounting plate to drive the material frame to move up and down, so that the material frame can continuously oscillate up and down, and anti-skid nails can continuously roll over; and the anti-skid nail can make comprehensive contact with anti-rust oil, and the anti-rust treatment effect on the anti-skid nail is greatly improved.

The utility model discloses a drying and heating roller for cord fabric processing, which comprises a base plate, two vertical frame plates are arranged at the top of the base plate, a motor is arranged on the outer wall of the vertical frame plate on one side, the output end of the motor is connected with a hot roller structure, a heat treatment structure is arranged on the outer side of the hot roller structure, and the heat treatment structure is arranged on the outer side of the heat treatment structure. The heat treatment structure comprises a plurality of supporting rods, the tops of the supporting rods are connected with a bottom protection plate, the top of the bottom protection plate is provided with a top protection plate capable of being opened, the bottom protection plate and the top protection plate are both semi-cylinders and integrally form a hollow cylinder, a plurality of heating rods are arranged on the inner wall of the top protection plate at equal intervals, and the heating rods are arranged on the inner wall of the top protection plate. And long-strip-shaped material guide notches are formed in the front side and the rear side of the bottom protection plate correspondingly. The heating device can be used for rapidly and uniformly heating the processed cord fabric, and is relatively energy-saving and high in practicability.

The utility model discloses a drying device is used to I -shaped steel paint spraying, solved the uneven drying effect in the paint spraying room, the problem of poor drying effect, it includes paint spraying room, both ends of paint spraying room all are provided with the access port, and the access port top of paint spraying room all is installed with the roll -up door, and the inner wall on paint spraying room is installed with drying heating assembly, and drying heating assembly includes the air heating unit of installation in the inner wall on both sides of paint spraying room, and both sides of air heating unit all are provided with internal heating unit, and internal heating unit includes the n -type pipe of respectively equidistance setting in the both sides of air heating unit, and n -type pipe is composed of two longitudinal pipes and a transverse pipe, the utility model discloses, in the work, through the heating coil of setting and electrifying heating air, under the drive of fan, and the hot air is pushed into the n -type pipe and the inside of communicating pipe, improves drying uniformity, and increases the heating area on the inner wall in paint spraying room, improves the heating drying effect.

The utility model discloses a cleaning, spraying and drying integrated device for wood formwork repair, and relates to the field of formwork repair, the cleaning, spraying and drying integrated device for wood formwork repair comprises a fixed bottom plate, a drying heating wire is embedded in the top surface of the fixed bottom plate, a conveying belt is movably installed behind the upper end of the fixed bottom plate, and a fixed top plate is fixedly installed at the upper end of the conveying belt. According to the sweeping, spraying and drying integrated device for repairing the wooden formworks, the wooden formworks of different sizes can be clamped and positioned through a movable structure, the wooden formworks of different sizes can be conveniently repaired, the conveying belt drives the wooden formworks to move towards one side, unrepaired wooden formworks can be continuously guided in, and the repairing efficiency of the wooden formworks is improved. According to the conveying device, conveying for wood formwork repair is achieved, the repair working efficiency is improved, residues on the fixed bottom plate are blown out and swept away, after the wood formwork is repaired, the device is quickly swept, the situation that next-time wood formwork repair is affected by residue accumulation is prevented, and wood formwork repair use is more convenient.

The invention relates to the technical field of air cylinder maintenance, in particular to an aluminum thin-wall air cylinder barrel maintenance method which comprises the steps that a cylinder barrel is fixed, and a damaged area on the inner wall of the cylinder barrel is cleaned; the damaged area of the cylinder barrel is polished; multiple rounds of flame scanning are conducted on the grinding area, and the single-time scanning time is decreased progressively along with increase of the scanning frequency; cleaning and drying the heating area; the damaged area is coated with a filling agent and cured; and after first-time curing, grinding is carried out through raw abrasive paper till the piston is not blocked in push-pull, after second-time curing, grinding is carried out through fine abrasive paper till the piston is flush with an undamaged area, and after third-time curing, grinding is carried out through water wet polishing abrasive paper till the set roughness range is achieved. The limitation that the thin-wall cylinder barrel cannot be repaired after being damaged and deformed due to the thin cylinder wall is broken through, the maintenance working efficiency can be effectively improved, the maintenance time is shortened, and the maintenance cost is saved.

The invention relates to the technical field of composite board drying, in particular to a double-station composite board transporting and drying integrated device which comprises a drying machine base, a supporting table is fixedly arranged above the drying machine base, a drying frame moving along the supporting table is arranged above the supporting table, and multiple layers of composite boards are placed in the drying frame. A drying cover arranged outside the drying frame in a covering mode is arranged above the drying frame, a drying heating wire is fixedly arranged on the inner wall of the drying cover, a connecting block fixedly welded to the drying cover is arranged on the side wall of the drying cover, a connecting column is fixedly arranged on one side of the connecting block, and a lifting block is fixedly arranged on one side of the connecting column. Positioning columns vertically penetrating through the lifting block are arranged on the two sides of the lifting block, the lower ends of the positioning columns are fixed to the upper end of the supporting table, a lifting control air cylinder fixed to the dryer base is arranged between the positioning columns, and the control end of a piston rod of the lifting control air cylinder is fixed to the bottom end of the lifting block and used for controlling lifting motion of the drying cover.

The utility model belongs to the technical field of polyester woven fabric, and particularly relates to polyester woven fabric preprocessing equipment which comprises a processing cabin, a sizing box is arranged in the processing cabin, two mounting plates are symmetrically arranged in the sizing box, two driving parts are rotationally arranged in each mounting plate, and the driving parts are symmetrically arranged in pairs. A plurality of driving pieces are arranged on the mounting plate, a plurality of stirring rollers are arranged between every two driving pieces, a supporting roller is arranged on the end face of the mounting plate, a second supporting frame is arranged on the end face of the sizing box, and a pressing roller is arranged in the second supporting frame in a sliding mode. The fixed cloth is continuously stirred through a plurality of stirring rollers, so that the cloth is continuously tensioned, and the sizing efficiency is improved; and by arranging a recovery cabin and a scraper, liquid can be circularly discharged into a liquid inlet hole through a one-way valve, so that resources are saved, and the production quality is improved.

The present disclosure discloses a heating film, an atomization assembly, an atomizer, and an electronic atomization device. The heating film is made of a ferrous alloy heating film material. The ferrous alloy heating film material includes a substrate element Fe in a mass percentage of 65% to 89% in the material, and a balance of an auxiliary element; the auxiliary element is at least one of Cr, Ni, and Mo; and the grain size of the ferrous alloy heating film material is greater than 0.2 µm. The atomization assembly includes a heating element and a liquid absorbing body. The heating element includes a heating film, and the liquid absorbing body includes a porous substrate. The porous substrate cooperates with the heating film. The atomizer includes a base, an atomization assembly mounted on the base, and a housing combined with the base. The electronic atomization device includes an atomizer and a power supply device that is mechanically and electrically connected to the atomizer. In the present disclosure, the heating film is made of a ferrous alloy material, and the grain size of the heating film is limited, thereby reducing production costs of the heating film, and improving dry heating performance and wet heating performance of the heating film.

The utility model discloses corrugated paper continuous production drying tunnel furnace, including operation platform, the upper surface fixedly connected with the protective cover of operation platform, the inner wall rotationally connected with first friction roller and second friction roller of operation platform. The utility model discloses second friction roller is driven to rotate by motor, and the rotation of second stable axle is driven through the conveyer belt, and the conveyer belt is continuously transported to the corrugated paper main part placed on its top, and the cooperation of fourth spur gear and third spur gear drives the rotation of driving wheel, and the rotation of driven wheel is driven through the belt of driving wheel, and the rotation of driving shaft is driven by driven wheel, and the rotation of first bevel gear is driven by driving shaft, and the rotation of second bevel gear and first spur gear is driven by first bevel gear, and the rotation of second spur gear and fan blade is driven by first spur gear, and the cooling and setting of the corrugated paper main part after drying are carried out by the rotation of fan blade, when the corrugated paper main part moves to the top of a plurality of first heating wire and second heating wire, carries out drying heating operation.

To provide a dry heat volume reduction treatment device capable of lowering a temperature upon extracting residue, to an extent of not causing a problem in workability, while shortening a cooling time.SOLUTION: A dry heat volume reduction treatment device comprises: dry heat means 16 disposed in a housing, for carrying out a volume reduction step of dry-heating waste to release moisture to dry and reduce the volume thereof; communication means 74 connected to the dry heat means 16, for extracting steam / moisture released from the waste to outside of the dry heat means 16; deodorizing means 26 disposed above the dry heat means 16 in the housing and connected to an outlet of the communication means 74, for burning / heating the steam / moisture extracted from the outlet of the communication means 74, to carry out a deodorization step of removing odor components contained in the steam / moisture; and control means for starting the deodorization step concurrent with the start-up of the device and allowing the deodorization step to continue until just before the device is stopped, and carrying out a cooling step of cooling the dry heat means 16 immediately after completion of a volume reduction process of the waste, i.e., after the finishing the volume reduction step.SELECTED DRAWING: Figure 6

The invention discloses intelligent drying equipment for wet liquid in solid materials and a using method of the intelligent drying equipment, and belongs to the technical field of dehumidification drying. A drying barrel is fixedly mounted on a support, an opening is formed in the upper surface of the drying barrel, and a drying barrel cover is mounted at the opening position through a lock catch in a buckled mode; a drying heating plate is installed on the inner wall of the drying cylinder, an outlet pipe is installed on the lower surface of the drying cylinder in a penetrating mode, and a digital display type humidity sensor with a temperature sensing probe extending into the drying cylinder is fixedly installed on the drying cylinder; the power unit, the up-and-down driving unit and the pushing unit are arranged to be used in cooperation, the power unit achieves rotation of stirring blades and movement of the up-and-down driving unit, the up-and-down driving unit achieves up-and-down movement of the bearing material box, and in cooperation with the pushing unit, the bearing material box carries bottom-layer solid materials to the top layer and throws the bottom-layer solid materials out; further, full stirring of the solid materials is achieved in cooperation with rotation of stirring blades, and highly-uniform drying and dehumidification control is achieved in cooperation with a drying heating plate.

The utility model relates to the technical field of corrugated paper processing, and discloses a corrugated paper heating device which comprises a device main body, the device main body further comprises a suspension heating module, and the suspension heating module comprises a mounting frame fixedly mounted in a heating chamber; the placing plates are fixedly mounted on the two sides of the interior of the heating chamber; the number of the lower draught fans is four, and the lower draught fans are all fixedly installed on the installation frame; the number of the air jet holes is four, the air jet holes are communicated and connected with the lower fan, and the air jet holes are fixedly installed on the installation frame; and the infrared heating lamp is fixedly mounted at the geometric center of the top surface of the mounting frame. And through the arrangement of the suspension heating module, the heated corrugated board suspends in the heating chamber under the action of jet airflow and then is subjected to infrared radiation heating by an infrared heating lamp, and the drying and heating efficiency is improved while the corrugated board is protected.

The utility model discloses sludge drying equipment for sludge treatment, which comprises a drying heating machine, a drying heating plate for heating and drying sludge is arranged in the center of the top of the drying heating machine, a controller is clamped at one end of the front surface of the drying heating machine, and a display is mounted at the top of the controller. The controller is electrically connected with the display through a wire; a leveling mechanism used for sludge drying treatment and leveling is arranged above the center of the top of the drying heating machine, and the leveling mechanism comprises a top plate, an air cylinder, a moving block, a moving groove, a supporting rod, a fixing frame and a leveling roller. The top plate, the air cylinders, the moving blocks, the moving grooves, the supporting rods, the fixing frames, the leveling rollers and the like are arranged and used in cooperation, so that the sludge can be uniformly leveled and dried when being dried, and the drying efficiency and quality are improved.

The utility model relates to the technical field of heating equipment, and discloses an internal heating energy-saving high-pressure-resistant dry-burning-resistant heating device which comprises a barrel body, a water inlet pipe, a spring, a front end cover, a water outlet pipe, a rear end cover, a heating rod, a wire, a detection hole, a fixing piece and a fixing hole, the water inlet pipe is welded to the position, close to the edge, of the outer wall of the barrel body, and the water inlet pipe is communicated with the interior of the barrel body; a spring is arranged in the barrel, one end of the spring abuts against the extension section of the water inlet pipe, a front end cover is welded to one end of the barrel, a water outlet pipe is welded to one end of the front end cover, and the water outlet pipe is communicated with the interior of the barrel; according to the utility model, the water outlet pipe which is eccentrically arranged is matched with the spring for use, so that a water source is always kept in the barrel body, and a dry burning phenomenon caused by interruption of the water source is effectively avoided; through the structural design of the spring, the heating area is increased, water pressure can be effectively absorbed and dispersed, and the high pressure resistance of the whole device is improved.

The application discloses a modular heat-conducting medium electric heating steam boiler system and an intelligent control method thereof, and belongs to the technical fields of electric heating steam boilers and high-voltage electric heating conversion. The system comprises a high-voltage electric control unit, a high-voltage water supply unit and a preheating module, an evaporation module and a superheating module which are sequentially and fluidly connected along the flow direction of a working medium. The high-voltage electric control unit comprises a rectifier device, a filter and protection circuit, a direct-current bus capacitor and multiple groups of power controllers which are sequentially connected. The output ends of the multiple groups of power controllers are respectively connected to the preheating module, the evaporation module and the superheating module. The preheating module, the evaporation module and the superheating module all adopt a pressure-bearing cylinder as an outer shell, and a plurality of dry heating jacket pipes are suspendedly arranged in the pressure-bearing cylinder along an axial direction. The dry heating jacket pipes are used for heating the working medium. The system adopts a hierarchical modular design and an efficient heat-conducting medium heat transfer technology, and a step-down transformer is omitted. The system is directly driven by high voltage without a transformer, has high heat exchange efficiency, prevents dry burning and has a compact structure.

PORTABLE ELECTRIC IMMERSION WATER HEATER WITH DRY HEATING DETECTION The invention relates to a portable electric immersion water heater (1) comprising an electric heating element (7) comprising two connection terminals (8a, 8b) configured to supply a heat dispersing part (10); an electrical power supply module (12) electrically connected to the two connection terminals (8a, 8b);and a thermostat (14) comprising a temperature sensor (15) disposed in a thermostat sleeve (16), the water heater (1) further comprising a thermal bridge (18) formed between the thermostat sleeve (16) and the heat-dispersing part (10), the temperature sensor (15) being a bimetallic thermal contact located in the sleeve (16) opposite the thermal bridge (18), the thermostat (14) being configured to cut off the power supply to the heating element (7) when the thermal contact detects that a predefined temperature threshold has been reached, particularly in the case of dry heating. Figure to be published with the abbreviation: Figure 3;