34results about How to "Avoid affecting cooling efficiency" patented technology

The invention discloses a heat radiation structure of a mobile terminal. The heat radiation structure comprises an installation bracket, wherein a mainboard heat radiation region and a camera shooting heat radiation region are arranged on the installation bracket in parallel, the mainboard heat radiation region is used for controlling temperature rise of a mainboard module, the camera shooting heat radiation region is used for controlling temperature rise of a camera module, the mainboard heat radiation region adjoins to one side of the mainboard module, the camera shooting heat radiation region is arranged on one side, away from the camera module, of the mainboard heat radiation region. According to the mobile terminal and the heat radiation structure thereof, the camera shooting heat radiation region used for controlling temperature rise of the camera module is arranged in a region outside the mainboard module and the camera module, so that the heat of the camera module is isolated from that of the mainboard module, and the heat of the mainboard module and the camera module is prevented from interactively affecting the heat radiation efficiency of the two modules even normal operation of the two modules, thereby ensuring heat radiation efficiency and stable operation of the mainboard module and the camera module simultaneously.

The invention relates to the technical field of gateway equipment. The invention further discloses an Internet of Things gateway device capable of effectively assisting in heat dissipation. The Internet of Things gateway device comprises an upper shell, a lower shell and a gateway device assembly; a mounting plate is arranged at the upper part in the upper shell; the gateway equipment assembly isfixedly connected with the lower end of the mounting plate; a mounting damping mechanism is arranged on the upper inner side wall of the upper shell, the upper inner side wall of the upper shell is connected with the mounting plate through the mounting damping mechanism, a heat dissipation mechanism is arranged below the interior of the lower shell, guide rails are fixedly connected to the lower ends of the left side and the right side of the upper shell, and L-shaped plates matched with the guide rails are fixedly connected to the upper ends of the left side wall and the right side wall of the lower shell. According to the Internet of Things gateway equipment capable of effectively assisting in heat dissipation, the dustproof net can be cleaned while the gateway equipment is subjected toheat dissipation, the situation that the heat dissipation efficiency is affected due to blockage of meshes of the dustproof net is avoided, the waterproof performance of the gateway equipment can be improved, and the situation that water enters the equipment from a shell connecting gap to damage the equipment is avoided.

The invention discloses a communication machine room with a partitioned cooling function. The communication machine room comprises a machine room body, a base, an air exhaust device, an air intake device and a control device. The air intake device comprises an air intake fan and an air intake cavity. An outlet of the air intake fan is connected with the air intake cavity through a filter screen. The upper side of the air intake cavity is uniformly provided with a plurality of air inlets. Air intake solenoid valves are arranged on the air inlets. The air exhaust device comprises an exhaust fan and an exhaust cavity. The exhaust cavity communicates with an inlet of the exhaust fan. The lower side of the exhaust cavity is uniformly provided with a plurality of exhaust ports. Exhaust solenoid valves are arranged on the exhaust ports. A temperature sensor is arranged in the position, located between each pair of the exhaust port and the air inlet which correspond to each other up and down, of the interior of the room. The area of the whole machine room can be uniformly partitioned. Targeted cooling treatment is conducted on the areas with different temperatures in the machine room. The cooling efficiency is improved. The damage rate of communication equipment is reduced.

The invention discloses an energy-saving motor withefficient heat dissipation, and belongs to the technical field of energy-saving motors. The energy-saving motor comprises a motor assembly, the outer side wall of the motor assembly is sleeved with a cooling mechanism, the outer side wall of the cooling mechanism is sleeved with a motor shell, one side of the motor shell is movably connected with a cover plate through a limiting mechanism, a shaft cooling mechanism is embedded in one side of an inner cavity of the cover plate, and the shaft cooling mechanism is sleeved outside the motor assembly. According to the invention, a cooling fan rotates to drive air to circulate in the air cooling row, heat is discharged through the rear side net plate, water liquid in the cooling base can introduce the heat into the shaft cooling base through a communicating pipe at the same time, and therefore heat generated by the motor assembly and a main shaft can be rapidly dissipated through the circulating water liquid; and the interior of the motor assembly is sealed through the sealing seat, so that the situation that dust is accumulated in the motor assembly to affect the heat dissipation efficiency during air circulation is avoided, and the requirement for internal dust isolation can be met while the efficient heat dissipation capacity can be improved.

The invention relates to the technical field of FLIR (Forward Looking Infra-Red) thermal imagers, especially a shielding protection cover for an FLIR thermal imager. The cover comprises a protection housing, wherein side of the protection housing is provided with an air incoming channel, and the other side of the protection housing is provided with an air outgoing channel. The top of the protection housing is provided with an air exhaust channel. Air can move along the inner wall of a diffusion tube, and is exhausted from one end with the bigger diameter of the diffusion tube shaped like a circular truncated cone. Meanwhile, the end with the bigger diameter of the diffusion tube shaped like the circular truncated cone is greater than the height of the FLIR thermal imager, can achieve the heat dissipation of the whole FLIR thermal imager, and facilitates the increase of the heat dissipation contact area. When an air blowing disc makes contact with air, grids rotate with a rotating shaft, and air is exhausted from a gap between the two grids, thereby facilitating the dividing of air, and preventing the excessive temperature change of the FLIR thermal imager from causing the damages to the housing. A wind ball rotates to exhaust the hot air flow from the inside of the protection housing, thereby preventing the circulation of the hot air in the protection housing from causing impact on the heat dissipation efficiency.

The invention discloses a water-based grinding fluid specialized for automobile clutch diaphragm which can reduce grinding temperature and force to maximum extent, improve process efficiency of grinding, ensure grinding precision and surface quality, prolong life of grinding wheel, reduce cost, satisfy requirements of environmental protection and production method thereof. Raw materials of water-based grinding liquor and weight percentages are phytic acid 1.8-2.2%, sodium benzoate 5-7%, alkylol amine 7-9%, sodium carbonate 3.5-4.5%, hyposulfite of soda 0.8-1.2%, polyethyleneglycol 11-13%, oleate triethanolamine 2.5-3.5%, sodium dodecylbenzene sulfonate 1.8-2.2%, foam killer 1.8-2.2%, 2-methyl-3(2H)-isothiazolone 0.4-0.6%, de-ionized water 58-61%. The production method is synthesis with stirring under condition of normal temperature - medium temperature - normal temperature.

The invention discloses a bus duct with a dust removing device, comprising a tank body, a dust removing device and a control device. The tank body comprises an upper cover plate, a lower cover plate,a left side plate and a right side plate, and the dust removing device comprises a power mechanism, a ball screw and a dust removing brush. The ball screw is arranged on one side on the upper cover, the power mechanism is arranged at an end of the ball screw, and the dust removing brush is arranged on the upper cover. The dust removing brush is connected to the ball screw, the upper surface of theupper cover is provided with a dust sensor, the output end of the dust sensor is connected to the input end of the control device, the output end of the control device and the input end of the powermechanism are connected, and the output end of the power structure is connected to the ball screw. According to invention, the dust sensor is used to detect the ash accumulation conditions on the upper cover in real time, and by controlling the dust removal device to clean the accumulated ash through the controller, the heat dissipation effects and safety performance of the bus duct are improved,and the damage rate of the bus duct is reduced.

The invention relates to the technical field of photovoltaic systems, and discloses a high-safety photovoltaic module-level fire safety switch which comprises a shell, limiting pieces are installed insliding rails through sliding blocks, one side of each limiting piece is connected with the inner side of the shell through a second reset spring. A micro motor, a switch and a temperature sensor areinstalled on the surface of the circuit board, electronic cooling fins are installed on the surface of the circuit board, a small cooling fan is installed at the top of the installation frame, clamping blocks are arranged on the two sides of the first fixing block, and a filter screen is arranged in the middle of the installation frame. According to the high-safety photovoltaic module-level firesafety switch, by arranging the electronic cooling fin, the small cooling fan, the filter screen, the clamping block and the limiting block, the high-safety photovoltaic module-level fire safety switch has an efficient cooling function and a rapid clamping and fixing function, the filter screen and the cover plate are convenient to disassemble and assemble, the surface of the filter screen is keptclean, and the cooling effect is improved.

The invention discloses a grinding device for radiator manufacturing, and relates to the field of radiator manufacturing. The grinding device comprises a box body, wherein a positive and negative motor is arranged on one side of the box body, a guide rod is arranged on one side of a screw rod, and a fixing table is arranged at the upper ends of the guide rod and the screw rod; a second air cylinder is arranged at the bottom end inside a second grinding cavity, and a grinding sliding table is arranged at the upper end of a base; and grinding blocks are arranged at the upper end of a fixing plate, and abrasive paper is arranged on the outer sides of the grinding blocks, and a third air cylinder is arranged on one side of the grinding sliding table. According to the grinding device for the radiator manufacturing, the positive and negative motor, the screw rod and the guide rod are matched to drive the fixing table to move left and right, so that the grinding position is adjusted; and thesecond air cylinder, the third air cylinder, the base, the grinding sliding table, the fixing plate, the grinding blocks and the abrasive paper are matched to grind clearances between radiating fins of the radiator, so that the surface of the radiator is smooth and free of burrs, and a staff or consumer is protected from being stung in the using process.

The invention relates to a high-frequency transformer, in particular to a high-frequency transformer capable of safely dissipating heat. The invention aims to provide the high-frequency transformer capable of safely dissipating heat, which can dissipate heat and avoid the situation that the high-frequency transformer cannot work due to too high temperature. A high-frequency transformer capable of dissipating heat safely comprises a base, a high-frequency transformer body, a heat conduction mechanism and the like, the high-frequency transformer body is installed on the top of the base, and the heat conduction mechanism is installed on the left portion of the base. When the high-frequency transformer is started to operate, the heat absorption fins absorb heat emitted by the high-frequency transformer, the heat is guided into the heat conduction mechanism to enable water to be boiled and become hot water, the hot water is discharged into the heat dissipation mechanism, the heat dissipation mechanism guides out heat in the hot water, and the hot water becomes cold water; and the cold water is continuously discharged back into the heat conduction mechanism to dissipate heat of the high-frequency transformer, so that the heat of the high-frequency transformer can be continuously dissipated, and the influence of high temperature on work is avoided.

The invention belongs to the technical field of electrical equipment, particularly relates to an efficient heat dissipation electrical equipment dustproof protection device, and aims to solve the problems that dust often accumulates on a heat dissipation net of the electrical equipment, the use of the electrical equipment is affected, the service life of the electrical equipment is shortened, theexisting electrical equipment can only perform single heat dissipation, the dust on the heat dissipation net needs to be cleaned manually,the labor intensity of workers is increased, and the heat dissipation efficiency is low. The device comprises a base box, supporting plates are fixedly installed on the two sides of the top of the base box, and a first supporting column and a second supporting column are fixedly installed on the two supporting plates. The device can clean the heat dissipation net of the electrical equipment in a reciprocating mode, sweep off dust accumulated on the heat dissipation net, reduce the labor intensity of workers, wet a brush for cleaning and clean the heat dissipation net through a wet brush in the cleaning process, is high in cleaning efficiency and rapid inheat dissipation, and prolongs the service life of the electrical equipment.

The invention discloses a sliding type power transmission structure, which comprises a conducting bar which is arranged on the side wall of the box body in the installation direction of the box body,and a sliding electric connector which is arranged on the conducting bar in a sliding mode. A negative electrode bar and a positive electrode bar are respectively arranged on the surface and the bottom surface of the conducting bar; the surface of the sliding electric connector is provided with a first conductive plate used for being electrically connected with the negative electrode electric rowin the sliding process and a second conductive plate used for being electrically connected with the positive electrode electric row in the sliding process, and the first conductive plate and the second conductive plate are connected into a power supply loop of a main board. Normal power supply can be guaranteed when the server is maintained, the occupied space of the power supply structure is reduced, and the heat dissipation efficiency is prevented from being affected. The invention further discloses a server case. The server case has the above beneficial effects.

The invention discloses a preparation method of a transfer type heat conduction coating for an LED lamp back plate, belongs to the technical field of LED lamps. Heat at the joint of the heat conduction coating and the back plate is partially gathered in a manner of embedding a heat transfer ball in the heat conduction coating, then the internal deformation action of a heat transfer ball is triggered, and a heat conduction fluid is forced to flow in a designated mode in an expansion mode, so that a heat accumulation ball is forced to slow down heat accumulation, the heat conduction fluid is guided into an outer heat dissipation ball bag through a connecting guide pipe to expand outside, the heat dissipation efficiency to the outside is improved, then rapid heat transfer is achieved, and after heat transfer is finished, resetting is conducted again to recover heat accumulation of the next round, heat is rapidly transferred through repeated flowing of the heat conduction fluid, the heat conduction coating can be assisted in rapidly transferring heat to the outside, and the heat dissipation efficiency of the back plate is greatly improved.

The invention relates to a handheld turning gear, and relates to the technical field of overhaul devices. The handheld turning gear comprises a motor, a driver, a handle and a speed reducer, wherein the driver is arranged on the motor, the handle is electrically connected with the drive so as to control the motor to positively and negatively rotate, the speed reducer is arranged on one side of themotor and is used for increasing the output torque of the motor, the speed reducer is coaxially fixed to an output shaft of the motor, a mounting mechanism is arranged between the motor and the speedreducer, the mounting mechanism comprises a blind flange which is arranged on one side, which is close to the output shaft, of the motor, locking blocks which are arranged on the blind flange in a sliding mode and are located on both sides of the output shaft, driving pieces which are arranged on the blind flange and are used for driving the locking blocks to slide and a locking ring which is arranged on the speed reducer, the locking blocks are in inserting matching with the locking ring during sliding, and the sliding direction of the locking blocks is perpendicular to the axial direction of the motor. The handheld turning gear has the advantage that the mobile transportation and disassembly and assembly workload is reduced so as to improve the maintenance efficiency.

The invention relates to the technical field of FLIR (Forward Looking Infra-Red) thermal imagers, especially a shielding protection cover for an FLIR thermal imager. The cover comprises a protection housing, wherein side of the protection housing is provided with an air incoming channel, and the other side of the protection housing is provided with an air outgoing channel. The top of the protection housing is provided with an air exhaust channel. Air can move along the inner wall of a diffusion tube, and is exhausted from one end with the bigger diameter of the diffusion tube shaped like a circular truncated cone. Meanwhile, the end with the bigger diameter of the diffusion tube shaped like the circular truncated cone is greater than the height of the FLIR thermal imager, can achieve the heat dissipation of the whole FLIR thermal imager, and facilitates the increase of the heat dissipation contact area. When an air blowing disc makes contact with air, grids rotate with a rotating shaft, and air is exhausted from a gap between the two grids, thereby facilitating the dividing of air, and preventing the excessive temperature change of the FLIR thermal imager from causing the damages to the housing. A wind ball rotates to exhaust the hot air flow from the inside of the protection housing, thereby preventing the circulation of the hot air in the protection housing from causing impact on the heat dissipation efficiency.

The invention belongs to the technical field of power exchange cabinets, and in particular relates to a power exchange cabinet for electric vehicles, which includes a power exchange cabinet body, a charging box and a plurality of power cords adapted to the charging box. A wire hole is provided, and a wire harness mechanism for bundling the power cord is provided at the wire hole; the wire harness mechanism includes a rotating ring, a driving gear, a motor, a bevel gear ring, a bevel gear, a collar, a threaded rod, The threaded barrel and the harness plate, wherein the rotating ring is rotatably connected to the inner wall of the power exchange cabinet body, and the center of the rotating ring falls on the axis of the wire hole. In the present invention, two wire harness plates can be close to each other to press the power cord tightly, so that multiple power cords are twisted and wound into one strand in an orderly manner, effectively fixing the power cord, and sealing the wire hole through the sealing plate to prevent dust from entering the replacement In the electric cabinet body, air is injected into the annular box through the air injection cylinder, and the airflow blows to the power line at the wiring harness to promote air flow and accelerate heat dissipation efficiency.

The invention discloses a low-voltage side filtering compensation energy-saving rectifier transformer. The transformer comprises a transformer shell, a connecting sleeve is fixedly arranged at the top of the transformer shell, an oil level gauge is connected to one end of the top of the transformer shell, a fixing seat is fixedly arranged at the bottom of the transformer shell, one side of the transformer shell is connected with an integrated heat dissipation main body, and a sliding groove is formed in the inner side of the heat dissipation main body; if dust falls into the heat dissipation main body, a scraping plate can be moved up and down in the overhaul and maintenance process; the interior of the heat dissipation main body is cleaned through the scraping plate, dust is prevented from being attached to the inner surface of the heat dissipation main body, the heat dissipation effect is not affected, and the convenience of the device is improved;heat dissipation through holes are formed in the surface of the heat dissipation main body, air flow on the surface of the heat dissipation body can be accelerated through the heat dissipation through holes, more heat is taken away, the heat dissipation efficiency is improved, and the practicability of the device is improved.

The invention belongs to the technical field of electrical equipment, in particular to a dust-proof protection device for electrical equipment with efficient heat dissipation. Dust often accumulates on the heat dissipation net of electrical equipment, which affects the use of electrical equipment and shortens its service life. Only a single heat dissipation can be carried out, the dust on the heat dissipation network needs to be cleaned manually, which increases the labor intensity of workers, and the problem of low heat dissipation efficiency. The following solution is proposed, which includes a base box, and both sides of the top of the base box are fixedly installed There are support plates, and a first support column and a second support column are fixedly installed on the two support plates. The invention can reciprocately clean the heat dissipation net of the electrical equipment, sweep off the dust accumulated thereon, reduce the labor intensity of workers, and can wet the cleaning brush when cleaning, and use the wet brush to clean the heat dissipation net. It cleans, has high cleaning efficiency, rapid heat dissipation, and prolongs the service life of electrical equipment.

The invention discloses a concave-convex face radiating plate. Multiple first-level U-shaped grooves are formed in the surface of the radiating plate. Multiple protruding bars are arranged between the first-level U-shaped grooves. The sections, perpendicular to the axial direction of the radiating plate, of the protruding bars are in a rectangular shape and an inverted U shape, and the protruding bars with the rectangular sections and the protruding bars with the inverted-U-shaped sections are arranged alternately. Due to the fact that the U-shaped grooves are arranged, a low-temperature medium is closer to the bottom faces of the grooves, the effective heat exchange area of the radiating plate is enlarged, the installation stability of a radiator can be improved due to the arrangement of the buckling grooves, and the phenomenon that the radiating efficiency is affected due to relative displacement generated by vibration of a high-temperature object is avoided.

The invention relates to the technical field of MOS tubes, and discloses a combined MOS tube structure with good insulation performance, which comprises an insulation shell, side boxes are fixedly connected to the two sides of the insulation shell, rolling balls are movably connected to the interiors of the side boxes, sliding tooth frames are slidably connected to the inner walls of the side boxes and located on the two sides of the rolling balls, and the inner walls of the sliding tooth frames are fixedly connected with the insulation shell. And the surface of the sliding tooth frame is meshed with a half gear, the interior of the half gear is fixedly connected with a fan shaft, the interior of the insulating shell is provided with a dehumidification and dust removal mechanism, and the interior of the insulating shell is fixedly connected with a filter screen. According to the combined MOS tube structure with the good insulating property, the rolling balls are driven to move left and right in the side box through the movement force generated when an automobile is started, the rolling balls impact the sliding tooth frame and move to drive the fan shafts on the half gears to rotate, air cooling is generated in the insulating shell, and the heat dissipation effect on the combined panel is achieved; and the problem that the service life of the element is damaged due to heat accumulation during operation of the combined MOS structure is avoided.

The invention relates to a hand-held turning device, and relates to the technical field of maintenance devices, which includes a motor, a driver arranged on the motor, a handle electrically connected with the driver to control the forward and reverse rotation of the motor, and a handle arranged on one side of the motor for A reducer that increases the output torque of the motor, the reducer is fixed coaxially with the output shaft of the motor, and a mounting mechanism is provided between the motor and the reducer, and the mounting mechanism includes a flange disposed on the side of the motor near the output shaft The cover, the locking blocks on both sides of the output shaft are slidably arranged on the flange cover, the driving part on the flange cover to drive the sliding of the locking blocks, and the locking ring on the reducer. When the block slides, it is plugged and fitted with the locking ring, and the sliding direction of the locking block is perpendicular to the axial direction of the motor. The invention has the advantages of reducing the workload of mobile transportation and disassembly to improve maintenance efficiency.

The invention discloses a multi-functional systematic synthetic display graphics card device, which comprises a heat dissipation motor, a dust collection plate and a vertical heat dissipation blade, a dust collection plate fixing device is arranged above the vertical heat dissipation blade, and the dust collection plate is installed on the The inside of the dust plate fixing device, and an electrostatic generating device is arranged above the dust collecting plate, and an arc-shaped cooling fin is arranged on the right side of the dust collecting plate fixing device, and a water-cooling tube is arranged inside the arc-shaped cooling fin, so The water cooling tube is provided with a circulating water pump, the right side of the arc-shaped heat sink is provided with a heat dissipation fan bracket, the heat dissipation motor is installed above the heat dissipation fan support, and fan blades are arranged below the heat dissipation motor, and the vertical heat dissipation Fixed nuts are arranged on both sides of the blade, and fixed nuts are arranged on the fixed nuts. The invention has scientific and reasonable structure, safe and convenient use, and the dust collecting plate fixing device is convenient for fixing and dismounting the dust collecting plate, and is convenient for disassembling the dust collecting plate for cleaning.

The invention discloses a gel plastic-package miniature solid relay. The gel plastic-package miniature solid relay comprises a shell, wherein a terminal is arranged on an outer surface of a lower endof the shell in a penetrating way, a gel block and a circuit board are arranged at a position, near to an upper end, of an inner surface of the shell, the gel block is arranged at an upper side of thecircuit board, the circuit board is fixedly connected with the gel block, a terminal is fixedly connected with an outer surface of a lower end of the circuit board, a rubber ring is arranged at a position, near to the rubber block, of an outer surface of the upper end of the shell, first sleeves are fixedly connected with surrounding corners of the outer surface of the upper end of the shell, second sleeves are arranged on outer surfaces of upper ends of the first sleeves, and springs are arranged in the first sleeves and the second sleeves. The gel plastic-package miniature solid relay can have a function of vibration reduction, the device maintenance efficiency is effectively improved, moisture is prevented from being stayed on the outer surface of the shell, the corrosion and the damage to the shell are reduced, and the service lifetime of the device is prolonged.

The invention discloses a sliding power transmission structure, which includes a conductive row arranged on the side wall of the box body along the installation direction, a sliding electrical connector slidably arranged on the conductive row, and the surface of the conductive row Negative electrode row and positive electrode row are respectively arranged on the bottom surface, and the surface of the sliding electrical connector is respectively provided with a first conductive plate for maintaining electrical connection with the negative electrode row during the sliding process and a connection with the negative electrode row. The positive electrode row is electrically connected to the second conductive plate, and the first conductive plate and the second conductive plate are respectively connected to the power supply circuit of the main board. The invention can ensure the normal power supply when maintaining the server, reduce the space occupied by the power supply structure, and avoid affecting the heat dissipation efficiency. The invention also discloses a server chassis, the beneficial effect of which is as above.

The invention relates to the technical field of power transformers, and discloses a power transformer with a short-circuit alarm function, including a bottom plate, an oil tank is fixedly connected to the upper surface of the bottom plate, and two support rods are fixedly connected to the top of the oil tank. The top of the tank is fixedly connected with an oil conservator, one side of the fuel tank is fixedly connected with an alarm box, one side of the inner wall of the alarm box is fixedly connected with a second fixed shaft, one side of the second fixed shaft is movably connected with a rotating rod, One side of the bar is movably connected with a warning light. The invention can not only pull the cover plate by the pull rope to move the alarm light out of the alarm box, so that the device can timely alarm the staff after a short circuit occurs, which improves the safety of the device, and at the same time can reduce the temperature in the fuel tank through the cooling fins , so that the heat of the oil in the fuel tank can be dissipated, and the dust on the heat dissipation fins can also be cleaned by the scraper, so as to avoid excessive accumulation of dust on the heat dissipation fins and affect the heat dissipation efficiency.

The invention discloses a gel plastic-package miniature solid relay. The gel plastic-package miniature solid relay comprises a shell, wherein a terminal is arranged on an outer surface of a lower endof the shell in a penetrating way, a gel block and a circuit board are arranged at a position, near to an upper end, of an inner surface of the shell, the gel block is arranged at an upper side of thecircuit board, the circuit board is fixedly connected with the gel block, a terminal is fixedly connected with an outer surface of a lower end of the circuit board, a rubber ring is arranged at a position, near to the rubber block, of an outer surface of the upper end of the shell, first sleeves are fixedly connected with surrounding corners of the outer surface of the upper end of the shell, second sleeves are arranged on outer surfaces of upper ends of the first sleeves, and springs are arranged in the first sleeves and the second sleeves. The gel plastic-package miniature solid relay can have a function of vibration reduction, the device maintenance efficiency is effectively improved, moisture is prevented from being stayed on the outer surface of the shell, the corrosion and the damage to the shell are reduced, and the service lifetime of the device is prolonged.