184results about How to "Avoid affecting life" patented technology

The invention belongs to the field of a display technology, and provides an organic luminescent device and an organic luminescence display apparatus, for solving the problems of overheated organic luminescence device and affected service life which are caused by poor heat conduction performance of packaging glue layers in a conventional organic luminescent device and a conventional organic luminescence display apparatus. The packaging glue layers in the organic luminescent device and the organic luminescence display apparatus are provided with heat conduction particles and drying agent particle. The heat conduction particles can improve the heat conduction capabilities of the packaging glue layers so as to prevent the service life from being affected and the device from being damaged due to overheating of an organic luminescence unit after long-time energization; and the drying agent particles, when the moisture and oxygen obstructing performance of the packaging glue layer is decreased, absorb moisture to prevent the moisture from being diffused to the organic luminescence unit so as to prevent the service life from being affected.

The invention discloses a fuel cell system with a high-potential protection function. An anti-freezing heating resistor of the fuel cell system is connected with high voltage output of a fuel cell stack through a stack protection contactor, in the processes of starting, stopping, standing by and low-load operation of the fuel cell stack, when the output voltage of the stack is higher than the setstack protection voltage, the stack protection contactor is controlled to be closed, the anti-freezing heating resistor is used for consuming some fuel cell electric energy, and catalyst deteriorationcaused by stack high-voltage operation is avoided; when the stack output voltage is lower than the stack protection cancel voltage for a certain period of time, the stack protection contactor is controlled to be switched off, and the fuel cell stack performs normal output; the resistance of the anti-freezing heating resistor is matched, it can be ensured that the output voltage of the stack is lower than the stack protection voltage under the non-load condition; according to the method, the anti-freezing heating resistor can be used for effectively restraining catalyst deterioration caused byexcessively high output voltage of the fuel cell.

The invention discloses a protection device for a solar photovoltaic panel. The device comprises a machine body. A lifting cavity with an upward opening is formed in the machine body. A sliding cavitypenetrating through the lifting cavity is formed in the top end of the machine body; a sealing mechanism is arranged in the sliding cavity; a solar photovoltaic panel is arranged in the lifting cavity; a cleaning mechanism is arranged above the solar photovoltaic panel; a rotary swinging mechanism is arranged at the lower end of the solar photovoltaic panel. The protection device for the solar photovoltaic panel is simple in structure, full-automatic and rich in function, and is provided with the mechanism capable of rotating and swinging, so that photovoltaic panel can better absorb solar energy, and the efficiency of the photovoltaic panel is improved. The lifting mechanism is arranged. The photovoltaic panel extends into the machine body in rainy days and severe weather, and thus rainwater is prevented from influencing the service life of the photovoltaic panel. In addition, the cleaning mechanism is arranged in the device, so that dust on the surface of the photovoltaic panel canbe swept back and forth to improve the solar energy absorption rate.

The invention discloses a control method and device of heating equipment and the heating equipment. The method comprises the steps of obtaining the whole machine temperature of the heating equipment and the temperature of the environment where the heating equipment is located; comparing the environment temperature and a first preset temperature to generate a first comparison result; comparing thewhole machine temperature and a second preset temperature to generate a second comparison result; and controlling the heating power of the heating equipment according to the first comparison result and the second comparison result. When an electric heater works, the temperature of parts of the whole machine is increased, in order to avoid the situation that the temperature of the whole machine istoo high and heating grill feeling is caused and also avoid the situation that as the parts operate at excess temperature, the service life of the whole machine and the user safety are affected, the whole machine need to be subjected to temperature control, the power of the whole machine is controlled, and comfortable heating, energy conservation and consumption reduction can be achieved.

The invention relates to an AMOLED pixel structure and a display device. The AMOLED pixel structure comprises a plurality of first sub pixels, second sub pixels, and third sub pixels, wherein the third sub pixels are B sub pixels. Central connection lines of two first sub pixel light-emitting regions and two third sub pixel light-emitting regions around a second sub pixel light-emitting region form a virtual isosceles trapezoid. The center of the second sub pixel light-emitting region is located at an intersection point of a perpendicular bisector of the central connection line of the two first sub pixel light-emitting regions around the second sub pixel light-emitting region and a perpendicular bisector of the central connection line of the two third sub pixel light-emitting regions around the second sub pixel light-emitting region. The centers of all first sub pixel light-emitting regions and the centers of all third sub pixel light-emitting regions around the second sub pixel light-emitting region are overlapped with all vertexes of the virtual isosceles trapezoid. Therefore, distances between the first sub pixel light-emitting regions and corresponding via holes are reduced andthe distances between the third sub pixel light-emitting regions and corresponding via holes are increased, so that the distances between the first sub pixel light-emitting regions and the corresponding via holes are equal to the distances between the third sub pixel light-emitting regions and the corresponding via holes and thus the process margin is increased.

The embodiment of the invention provides a mining script detection method, a mining script detection server, a mining script detection client and a mining script identification system. the method comprises the steps of detecting whether a current network environment has network resources accordant with a first preset mining rule on a client side; if the network resources accordant with the first preset mining rule is detected, determining that the network resources carry a suspicious mining script; blocking the execution of the network resources; and sending the network resources carrying thesuspicious mining script to the server, and confirming the mining script by the server. According to the method, the server, the client and the system provided by the embodiment of the invention, thetimeliness of identification of the mining script is enhanced.

The invention discloses an exception handling method which comprises the steps of receiving a battery index item aiming at a target vehicle reported by a battery management system of the target vehicle; determining whether the exception of a battery occurs or not according to the battery index item of the target vehicle in a statistics period, and determining an exception type of the battery whenthe exception occurs; determining an exception handling strategy matched with the exception type of the battery according to a preset corresponding relation of exception types and exception handling strategies, wherein the exception handling strategy comprises updating a target parameter of the battery; and issuing a parameter value of the target parameter to the battery management system of the target vehicle through an over-the-air download technology, and updating the target parameter through the battery management system according to the parameter value.

The invention provides an electron microscope detection method and device of a dynamic process for carrying out localized irradiation on a sample surface by laser. The electron microscope detection method comprises the following steps: introducing a focused laser beam into a sample chamber of a scanning electron microscope; putting a sample on a sample platform of the scanning electron microscope and adjusting a focusing position of an electron beam and a laser beam light path, so as to overlap the focal point of the focused laser beam with the focal point of the electron beam and enable an included angle to be formed between the incidence direction of the focused laser beam and the incidence direction of the electron beam; carrying out observation detection on the sample by adopting the scanning electron microscope; outputting the focused laser beam to carry out the localized irradiation on the sample surface simultaneously or lingeringly; detecting dynamic changes of a matter structure under laser irradiation in real time through the scanning electron microscope; closing the laser; finishing the operation of the scanning electron microscope. By adopting the electron microscope detection method and device, provided by the invention, the laser localized irradiation is carried out on tiny parts of the sample, controllable physical-state changes including topspeed heating, melting, sublimation and the like can be generated on a laser irradiation micro-region and pollution to the chamber is hardly generated; a dynamic change process of the matter structure of the sample at temperature higher than a melting point can be researched.

The invention discloses drainage pipe network leakage monitoring equipment based on distributed optical fiber temperature measurement. The drainage pipe network leakage monitoring equipment comprisesa temperature sensing optical cable and a monitoring main machine which are connected with each other, wherein the monitoring main machine comprises a laser source and a processing module, and the temperature sensing optical cable is laid in a drainage pipeline and generates a reflected light sensing signal for laser of the laser source; and the processing module obtains the temperature of each point along the temperature sensing optical cable based on the reflected light sensing signal, judges whether a leakage point exists or not, and positions the leakage position when the leakage point exists. According to the drainage pipe network leakage monitoring equipment based on distributed optical fiber temperature measurement, compared with the prior art, the leakage point is monitored based on temperature signals of the temperature sensing optical cable, so that the leakage of a whole drainage pipe network is monitored, and the leakage condition of the drainage pipe network is monitored in real time and in a large-range coverage manner.

The invention discloses a fire-fighting floor tile. The fire-fighting floor tile comprises a floor tile, wherein a plurality of fire-fighting cavities are symmetrically arranged in the floor tile, fire-fighting nozzles are slidably inserted in the fire-fighting cavities, fixing seats are arranged on the inner bottom walls of the fire-fighting cavities, right-angle pipes are fixedly embedded in thefixing seats, and one ends, far away from the fire-fighting cavities, of the right-angle pipes extend into the floor tile and are commonly connected with a water inlet pipe. According to the fire-fighting floor tile, the right-angle pipes are connected with pressure cavities in a sliding sealing manner, so that the fire-fighting nozzles achieve the effect of automatically ascending and spraying,water is prevented from entering the fire-fighting cavities and influencing the service life of the fire-fighting floor tile through sealing plates when the fire-fighting nozzles spray water to extinguish fire, the fire-fighting nozzles automatically spray water when reaching a specified height through spraying channels and the pressure cavities, the change of the external environment temperatureis converted into the mechanical action of a piston and a push rod through thermal expansion liquid, opening and closing of a water inlet pipe are automatically controlled through the linkage of the push rod and a rubber plug, and the automatic control capability and the reliability of the fire-fighting floor tile are improved.

The invention discloses a process technology of an aluminum pot for an induction cooker, mainly comprising the following steps: a casting process, a simple shaping process, a bottom surface processing process, a special shaping process, and the like, in the special shaping process, a shaping die is used for special shaping, the shaping die consists of an upper die and a lower die, the proximal edge of the upper die, which corresponds to ribs positioned at the bottom of the aluminum pot, is provided with salient points, and the shape of the lower die is similar to the inner surface of the aluminum pot; the aluminum pot is firstly placed between the upper die and the lower die during shaping, and then special equipment is adopted to extrude the ribs positioned on the inner bottom surface and the outer flat surface of the aluminum pot; aluminum molecular structures are changed at a punching position during punching due to the installation of the shaping upper die, thus the aluminum molecular structures are compacter and are enhanced in the cohesive degree; after the shaping, the adherence between a non-rust iron plate and aluminum contacted with the non-rust iron plate is enhanced, i.e. the non-rust iron plate is more tightly matched with the aluminum and better contacted and inosculated with the aluminum, and the non-rust iron plate can uniformly conduct heat to the aluminum in the heat conduction process.

The invention discloses a seedbed heating system for a planting greenhouse. The seedbed heating system is characterized in that a heat radiator is arranged below each seedbed in the planting greenhouse and is connected with an exhaust pipe of hot steam and a feeding pipe of cold water; an exhaust fan is arranged at the front end of each heat radiator; an air supply duct is arranged at the front end of the corresponding exhaust fan; hot air outlet holes are formed in the upper end of each air supply duct; the exhaust pipe of the hot steam and the feeding pipe of the cold water are connected to the inside of a water cavity of a heating boiler outside the greenhouse; a group of solar auxiliary water heaters is arranged beside the heating boiler. The hot stem is circularly heated in the greenhouse, so that smoke dust and carbon dioxide waste gas in the greenhouse are avoided; a solar water heating device is arranged on the boiler outside the greenhouse in an assisting manner, so that the consumption of fuel of the boiler is greatly reduced; the heat radiators, the exhaust fans and the air supply ducts are respectively used for heating on the seedbeds, so the planting temperatures of plants planted on the seedbeds are basically consistent, and the utilization of heat is more reasonable.

The invention discloses an engine control method and system. The engine control method includes the steps that the starting time points of an engine are recorded, and the duration between latest two times of starting time points are calculated; if the duration is smaller than a threshold value of the duration, the sliding stopping function is shielded; if the duration is larger than or equal to the threshold value of the duration, the present vehicle speed is obtained; if the present vehicle speed is smaller than a first vehicle-speed threshold value, the sliding stopping function is shielded; if the present vehicle speed is larger than or equal to the first vehicle-speed threshold value, whether the highest vehicle speed after a vehicle in the latest one time is started is smaller than a second vehicle-speed threshold value or not is judged; if the highest vehicle speed after the vehicle in the latest one time is started is larger than or equal to the second vehicle-speed threshold value, it is judged that the present vehicle starting period is non-low-speed driving, and the time of continuous low-speed driving returns to zero; if the highest vehicle speed after the vehicle in the latest one time is started is smaller than the second vehicle-speed threshold value, it is judged that the present vehicle starting period is low-speed driving, and the time of continuous low-speed driving accumulates 1; when the time of continuous low-speed driving reaches the set value, the sliding stopping function is shielded. By means of the engine control method and system, the problems that as the engine is frequently started, the service life of a starting system is shortened, and as the engine is started again in the sliding process, the driving performance of the whole vehicle is influenced are solved.

The invention provides an organic electroluminescent device and a display device, wherein the organic electroluminescent device comprises a light emitting layer, a hole blocking layer and an electronblocking layer, wherein the material of the light emitting layer comprises a host material; The materials of the hole barrier and electron barrier are the same as the host materials. An organic electroluminescent device, Using the same material as the main material of the light-emitting layer, hole blocking layer and electron blocking layer, can effectively reduce the energy level barrier betweenthe main body of the light-emitting layer and the adjacent hole blocking layer and electron blocking layer, reduce the device turn-on voltage, improve the light-emitting efficiency, and also prolong the service life of the device.

The invention provides a multifunctional charging pile, and belongs to the technical field of charging. The multifunctional charging pile comprises a charging pile body, wherein a fixed seat is arranged at the bottom of the charging pile body; a first protective cover is fixedly mounted at the upper end of the front surface of the charging pipe body; a display screen is fixedly mounted at a position, which is close to a position below the first protective cover, on the front surface of the charging pile body; and a magnetic card port is formed in a position, which is close to a position belowthe display screen, on the front surface of the charging pile body. By the arrangement of the first protective cover, rainwater is prevented from entering the display screen, the magnetic card port and a control switch; by the arrangement of a second protective cover, a charging gun and a wire are protected; in raining, the charging gun is plugged into a charging gun socket; a first antiskid pad achieves an effect of preventing the charging gun from sliding off; an electric telescopic rod pushes the second protective cover; and under the united action of a first connection piece and a second connection piece, a closed space is formed between the second protective cover and the charging pile body; a sealing pad achieves a sealing effect.

The invention discloses a paraffin reaction kettle, comprising a reaction kettle body and a kettle cover, wherein the bottom part of the reaction kettle is provided with a discharge pipe, the upper part of the kettle cover is provided with a feed pipe, the centre of the reaction kettle body is provided with a stirring shaft of which one end is connected with the bottom part of the reaction kettle body by a bearing pedestal, and of which the other end penetrates through the kettle cover to be connected with the rotating shaft of a motor arranged on the kettle cover by a shaft joint, a plurality of stirring blades are arranged on the stirring shaft, and a plurality of electric heating bars which extend in the reaction kettle body and are respectively arranged at both ends of the reaction kettle body are also arranged on the kettle cover. According to the invention, by using the motor to control the stirring shaft arranged in the reaction kettle body to rotate, the stirring blades are driven to rotate, so as to enable the materials in the reaction kettle to be fully mixed and react; meanwhile, by adopting the heating manner of the electric heating bars provided with temperature controllers, the heating temperature is controlled conveniently and accurately; and the paraffin reaction kettle is convenient in operation, and is extremely suitable for being widely popularized in the field of paraffin production and processing.

The invention provides an organic electroluminescence device and a display device. The organic electroluminescence device comprises a light-emitting layer, a hole blocking layer and an electron blocking layer, wherein the material of the light emitting layer comprises a main material, a guest material and a first thermal activation delay fluorescent material; the material of the hole blocking layer comprises a second thermal activation delay fluorescent material; the material of the electron blocking layer comprises a third heat-activated delay fluorescent material. According to the invention,the TADF material is adopted as a sensitizing agent in the light-emitting layer. In the hole blocking layer and the electron blocking layer, the TRGB material is used at the same time, so that the luminous efficiency of the organic electroluminescent device can be improved, and the service life of the organic electroluminescent device can be prolonged.

The invention provides a method for eliminating a keyhole-free friction stir spot welding ring groove. According to the method, through zero point setting before welding, the length of the part, stretching out of a datum plane, of a stirring pin is 10% of the thickness of a to-be-welded base material, the length of the part, stretching out of the datum plane, of a stirring sleeve is 80% of the stretching length of the stirring pin, and at this moment, the positions of the stirring pin and the stirring sleeve are set as zero points, that is, the zero points are determined by a numerical controlsystem; and before a stirring tool moves downwards, the stirring pin and the stirring sleeve are drawn back at the same time. After the stirring pin and the stirring sleeve are welded and return to the original point, the stirring pin continues to move downwards; and when the quantity that the stirring pin continues to move downwards is 20% of the thickness of the base material, the stirring pinis kept at the position to rotate for 1 s to 2 s, aluminum metal in a molten state is fully backfilled to the position around the welding point, the stirring pin and the stirring sleeve return to theoriginal point and rotate for 1 s to 5 s, the periphery of the welding point is fully filled with the aluminum metal in the molten state, and the aim of eliminating the welding defect ring groove is achieved. The method is used for welding of aluminum plates of 1 mm, 2 mm, 3 mm, 4 mm and 5 mm, and the welding ring groove defect is eliminated.

The invention relates to a dimmable LED light source. The LED light source comprises a fluorescent powder film with at least two color zones and an LED module driven by a driving circuit and comprising a plurality of independent chip sets, wherein the fluorescent powder film and the LED module are arranged at an interval in a detachable manner or integrally forming manner, and the at least two color zones of the fluorescent powder film are arranged in a manner of separately corresponding to one LED chip set of the LED module in space, so that the LED light source can emit light rays with at least two color temperatures and / or colors only by the control over the driving circuit. According to the invention, by correspondingly arranging the fluorescent powder film zones with different colors on the LED chip sets with different color temperatures, the fluorescent powder film of the LED light source can be combined with the LED chip sets with different color temperatures according to requirements to emit light rays with different color temperatures and / or colors, and by independently adjusting currents of multiple LED chip sets, dimming and color matching of the LED light source can be further achieved.

The invention relates to a cladding hinging machine which comprises a mandrel and a cladding piece, wherein the cladding piece is sheathed on the shaft lever of the mandrel; the shaft lever is provided with a tangent plane; the cladding piece is provided with an axial opening and forms a plane; and the width of the plane is less than the width of the tangent plane of the shaft lever, thus the plane is not in contact with the tangent plane. The cladding piece enables the hinging machine provided by the invention to have the effects of slightly opening and powerfully closing; when a screen is opened, the plane of the cladding piece is rotated into the tangent plane range of the mandrel, thus a torsion is smaller; when the screen is opened to a rear part, the plane of the cladding piece is in contact with the circular arc surface of the shaft lever to enhance the interference quantity, thereby enhancing the torsion; and thus, the screen can be supported and can not fall down when being opened to the rear part.

The invention provides a mowing and soil loosening device for agriculture and relates to the field of agricultural equipment. The device comprises a vehicle body, a supporting column is fixedly mounted on the left side of the top of the vehicle body, a handle is fixedly mounted at one end of the supporting column, a grass collection box is fixedly mounted on the right side of the supporting column, first retractable rods are fixedly mounted on the top of the vehicle body, a transverse rod is arranged on the upper side of the vehicle body, the two ends of the transverse rod are fixedly mountedon one sides of the first retractable rods respectively, and a first sliding slot is formed in the transverse rod. According to the mowing and soil loosening device for agriculture, through the firstretractable rods, the height of the transverse rod can be adjusted, and correspondingly height adjustment of a mowing cutter is achieved; through a second motor, a driving wheel can be driven to rotate, scraping blades are driven to rotate, and soil after mowing can be loosened; through arrangement of an exhaust fan, in the mowing process, the exhaust fan runs, and grass cut off by the mowing cutter is sucked into the grass collection box through a grass suction pipe for storage, so that the crushed grass is prevented from polluting the environment, manual cleaning is not needed, the labor ofan operator is reduced, and time and effort are saved.

The invention provides an organic electroluminescence device and a display device, and the organic electroluminescence device comprises a light-emitting layer and a hole blocking layer, wherein the material of the light-emitting layer comprises a host material, a guest material and a first thermally-activated delayed fluorescence material; the material of the hole blocking layer includes a secondthermally activated delayed fluorescence material. The TADF material is adopted in the light-emitting layer as the sensitizer, and meanwhile, the TADF material is used in the hole blocking layer, so that the light-emitting efficiency of the organic electroluminescence device can be improved, and the service life of the organic electroluminescence is prolonged.

The invention discloses a forme wetting water applying method based on combination of electric wetting and ultrasonic atomization and a system and application of the forme wetting water applying method. The method comprises the following steps that an ultrasonic atomization device is arranged below a water roll, forme wetting water is added into the ultrasonic atomization device, and electrodes are arranged at atomization nozzles of the ultrasonic atomization device; 2, the water roll comprises a metal roll and a dielectric layer arranged on the outer surface of the metal roll in a covering manner, the ultrasonic atomization device is started, and the forme wetting water is sprayed to the water roll through ultrasonic atomization under ultrasound; and 3, the electrodes at the atomization nozzles and the metal roll are powered on at the same time, and the water roll is started, so that the forme wetting water is transferred from the water roll to a forme in the form of a continuous anduniform water film. According to the method, the principle of combining electric wetting with ultrasonic atomization is creatively adopted for applying the forme wetting water, the surface tension ofthe forme wetting water can be greatly reduced, and the water film stably and uniformly adheres to the surface of the water roll; by means of the method, the consumption of surface active substances including alcohol in the forme wetting water can be remarkably lowered; high-quality printing can be achieved without any added surface active substance; and high efficiency and environmental protection are achieved.

A noise reduction structure for a dry type transformer comprises a casing, a first fastening member, first connecting plates, a base box and a shock absorbing plate, wherein the shock absorbing plateis arranged at the lower end surface of the base box, and a support table is arranged in a first opening of the base box; shock absorbing components arranged in the base box are respectively connectedto the support table and the base box; a second connecting plate is arranged on the support table, and the second connecting plate is slidably connected to a guide rod; a shock absorbing spring is sleeved outside the guide rod; mounting grooves are arranged on the upper end surface of the support table; second through holes are arranged at the bottoms of the mounting grooves; air blowing devicesare arranged in the mounting grooves; a first sound absorbing layer is respectively arranged on the inner wall of each second through hole; the first connecting plates are respectively arranged on thecasing, and the first connecting plates are connected to the base box through the first fastening member; a noise blocking piece is arranged on the inner wall of the casing, and a transformer is arranged in the casing; and the transformer is detachably connected to the support table. The noise reduction structure provided by the invention can effectively eliminate the noise generated by the operation of the dry type transformer, and can perform heat dissipation and cooling on the dry type transformer.

The invention provides an organic electroluminescence device and a display device, and the organic electroluminescence device comprises a light-emitting layer and an electron blocking layer, wherein the material of the light-emitting layer comprises a host material, a guest material and a first thermally activated delayed fluorescence material; the material of the electron blocking layer comprisesa second thermally-activated delayed fluorescent material. The TADF material is used in the electron blocking layer while the TADF material is adopted in the light-emitting layer as the sensitizer, so that the light-emitting efficiency of the organic electroluminescence device can be improved, and the service life of the organic electroluminescence device is prolonged.

The invention discloses an assembly-type steel trestle supported by H-shaped steel. The steel trestle includes multiple H-shaped supporting rods and bridge plates both of which are fixed with foundation, H-shaped blocks clamped into auxiliary supporting pieces are fixed to the surfaces of limiting plates, an H-shaped cross girder is in contact connection with the end face of the corresponding H-shaped block between every two adjacent limiting plates, first columns and second columns are embedded in first through holes and second through holes respectively, and dovetail dowels are embedded in dovetail dowel half-blind holes. According to the assembly-type steel trestle supported by the H-shaped steel, the limiting plates can clamp the two sides of the H-shaped cross girders to prevent the H-shaped cross girders from detaching, the stability is improved, and accumulated water on the bridge plates can be drained out through water guiding pipes and cannot flow into inner cavities of the bridge plates at the same time, so that the situation that oxidation happens after long-time use and then the service life is influenced is avoided. The first columns and the second columns can be accurately inserted into the first through holes and the second through holes respectively, and after every two adjacent bridge plates are placed together and the dovetail dowels are put into the dovetaildowel half-blind holes, the firmness between every two adjacent fixed bridge plates is further improved.

The invention provides an air conditioner external unit humidity detection and protection method and device, and an air conditioner. A humidity sensor is arranged inside a crate of an air conditionerexternal unit, detects the working environment humidity of each functional component of the air conditioner external unit in real time, and gives early warning according to the surface humidity of a radiator of the air conditioner external unit, and when the surface humidity of the radiator of the air conditioner external unit exceeds the safety threshold value, the air conditioner external unit is controlled to stop working, and the dehumidifying function can be started at the same time. By monitoring of the humidity sensor additionally arranged on the radiator of the air conditioner externalunit, the inner working humidity of the air conditioner can be effectively monitored, and the risk possibly generated by direct contact of the sensor and a power device is avoided at the same time; and effective protection and reminding are achieved for extreme bad conditions, and when the humidity exceeds the safety threshold value, a moisture-proof agent is exposed for dehumidifying, and a circuit board is prevented from being damaged and affecting the service life of a product.

The invention relates to a falling film evaporator. The falling film evaporator is characterized in that in the falling film evaporator, a tube plate is provided with a plurality of through holes, a tubulation is inserted into the through holes and is connected to the tube plate, the outer part of the upper end of the tubulation is provided with an external thread pipe, a distribution head is inserted into the tubulation and is connected to the tubulation, the main body of the distribution head is a hollow circular tube, the lower part of the outer wall of the hollow circular tube is provided with an annular first boss, the annular first boss is provided with a plurality of opening grooves, the grooves helically extend down to the bottom of the tube wall from the upper edge of the annular first boss along the annular first boss and the outer wall of the hollow circular tube and is used for diversion, a casing pipe wraps the distribution head and is a hollow circular tube, the inner wall of the casing pipe corresponding to the first boss is provided with an annular inner boss, the inner diameter of the inner boss fits to the outer diameter of the first boss, the upper end of the casing pipe is connected to the outer wall of the hollow circular tube of the distribution head through spot welding and the inner wall of the lower part of the annular inner boss of the casing pipe tightly fits to the outer wall of the external thread pipe. The liquid in the tubulation of the falling film evaporator can easily form a film so that the pipe wall is uniformly heated, the tubulation damage rate is reduced and a falling film evaporator service life is prolonged.