39results about How to "Solve the cooling problem" patented technology

The utility model discloses a kind of heat pipe control inclined sky light, it is related to sky light technical field, including shell, face frame, mist blue diffusion plate, light source and radiator, the shell bottom is equipped with window, the radiator is embedded in window and outer surface is flush with shell outer contour, constitute the part of complete outer surface of shell;The shell has oblique outer convex side wall part, and the side wall part forms non-perpendicular angle with mist blue diffusion plate;The heat pipe control inclined sky light further includes warning component, it is located in the inside of the oblique outer convex side wall part, and includes: warning light source passage, the color change card movably arranged in warning light source passage, the drive part of driving color change card movement.This heat pipe control inclined sky light can improve heat dissipation efficiency, realize high temperature automatic warning and reduce the advantages of security risk.

The utility model relates to back adhesive technology field discloses the heat dissipation type breathable back adhesive, including polyester film, the polyester film top is provided with the heat conducting filler layer, is provided with the adhesive layer one between heat conducting filler layer with polyester film, heat conducting filler layer top is provided with graphite sheet, graphite sheet top is provided with the breathable microporous structure layer, the breathable microporous structure layer top is provided with adhesive layer two, heat conducting filler layer inside includes graphite sheet and boron nitride powder, graphite sheet with boron nitride powder is pasted together. In the utility model, through the high heat conduction performance of graphite sheet and boron nitride powder, the heat is conducted fast, and the intercommunication micropore of breathable microporous structure layer lets the air circulation and carries away the heat, and the heat dissipation problem is solved efficiently. The adhesive layer guarantees the close connection of each layer, maintains the stable overall structure, finally makes the object of being pasted stable operation under the suitable temperature, guarantees the normal use of relevant equipment or product.

This utility model discloses a novel composite heat exchange vehicle-mounted refrigerator, relating to the field of vehicle-mounted refrigeration technology. It includes a housing, a novel composite heat exchange system, and a control system. The novel composite heat exchange system includes: a main refrigeration unit, utilizing a cold source and a cold storage medium within an energy storage body for refrigeration or cold storage; and a secondary refrigeration unit, including a semiconductor refrigeration element. The cold end of the semiconductor refrigeration element is coupled to the system's airflow path or energy storage body to provide supplementary or deep refrigeration, while its hot end dissipates heat through a heat dissipation structure. The heat dissipation structure is immersed in the cold storage medium, utilizing the cold storage medium to absorb heat from the hot end. This utility model, by combining the main refrigeration unit and the secondary refrigeration unit and optimizing the thermal management of the secondary refrigeration unit, achieves stronger refrigeration capacity and can meet lower refrigeration temperature requirements.

This invention belongs to the field of space laser communication and deep space exploration technology, and discloses an integrated detection device for space laser communication monitoring and interaction. The device includes a main body, on which are integrated a solar panel, a navigation imaging device, a communication antenna, a communication receiver, a radar, a landing support, and functional components for communication monitoring, environmental perception, and interactive operation. This invention forms a closed-loop system through electrical, signal, and mechanical connections, enabling simultaneous execution of multiple tasks, significantly improving the device's space operation efficiency, reducing the load pressure on space launch vehicles, and adapting to the space constraints of on-orbit operations. The communication antenna and receiver achieve bidirectional signal interaction through a high-speed laser communication module and are linked with the navigation imaging device and environmental sensors to ensure stable transmission and status monitoring of laser communication signals, which is beneficial for practical applications and operations.

This invention provides a liquid metal-based thermal grease, its preparation method, and its application. The liquid metal-based thermal grease comprises the following raw materials in parts by weight: 100 parts liquid metal, 2-5 parts silicone oil, 0.1-20 parts thermally conductive powder filler, and 0.1-3 parts other additives. The high-reliability liquid metal-based thermal grease provided by this invention possesses excellent high thermal conductivity, high processability, and high reliability. It can replace traditional thermal grease to solve the heat dissipation and cooling problem of high-power chips, thereby extending the lifespan of electronic products.

This invention provides the application of a mixture of methylstyrene with high para-isomer content in the preparation of polystyrene substitute copolymers, belonging to the field of polymer material synthesis technology. This invention is the first to directly utilize a low-cost mixture of methylstyrene isomers to replace high-purity styrene. Through a "boiling-condensation" cycle in the fluidized bed polymerization process, efficient and constant-temperature heat dissipation is achieved, effectively overcoming the heat transfer difficulties and temperature runaway risks of traditional bulk polymerization. This facilitates control of the polymerization mechanism and yields random copolymers with a narrow molecular weight distribution and mechanical properties comparable to general-purpose polystyrene. This method is simple and controllable, significantly reduces raw material costs, and combines economic benefits with environmental value. The resulting copolymers can be used in general plastics, packaging materials, and other fields.

The utility model belongs to the field of high -power test equipment especially relates to a heat pipe radiator for test equipment, including heat conduction matrix, heat pipe, heat dissipation matrix, heat conduction matrix is connected with heat dissipation matrix, it is equipped with a plurality of through -hole in the middle heat conduction matrix, the fixed connection of heat pipe has on heat dissipation matrix, the evaporation section of heat pipe is close to heat conduction matrix, the fixed connection of a plurality of radiating fins has on heat dissipation matrix, and the condensation section of radiating fin is close to heat pipe. Advantage is: has high -efficient heat dissipation, good dustproof, space utilization high -efficient, the advantage that heat is conducted downward, can effectively solve the heat dissipation problem of high -power test power supply equipment under special working condition, improves the operating stability and life of equipment.

The application discloses a heat dissipation structure of an outdoor device and a centralized inverter integrated machine. The copper bar connected between an inverter and a transformer is connected with an internal cavity of an alternating current side of the inverter, heat generated by the copper bar is discharged to the inverter, and the heat exchanger in the inverter is used to discharge waste heat to the external environment. The heat dissipation problem of the copper bar connected between the inverter and the transformer and the connecting cavity is solved, and the cross-sectional size of the copper bar is reduced. The temperature of the copper bar connected between the inverter and the transformer and the connecting cavity is reduced, and the service life of internal devices is prolonged.

The application discloses a core cabin of a natural gas hydrate in-situ heat and pressure preserving coring device based on a gravity heat pipe, and belongs to the technical field of natural gas hydrate exploitation, and comprises a core cabin outer pipe assembly, wherein the core cabin outer pipe assembly comprises a first outer pipe, a second outer pipe, a third outer pipe, a fifth outer pipe, a sixth outer pipe and a seventh outer pipe which are sequentially connected from top to bottom, a chip removal groove is threadedly connected to the bottom of the seventh outer pipe, and a drill bit is threadedly connected to the bottom of the chip removal groove; the application uses thermoelectric refrigeration and heat pipe heat transfer principles to integrate a refrigeration mechanism on a hydrate coring device, breaks through the heat preservation technical bottleneck existing in conventional natural gas hydrate coring equipment and technology, and the integrated heat pipe enhanced heat transfer system solves the heat dissipation problem of the refrigeration mechanism of the coring device, so that the core in the core cabin of the coring device can keep the in-situ temperature, original and faithful samples are provided for reservoir evaluation and basic physical property research, and new equipment and technology are provided for marine natural gas hydrate heat and pressure preserving coring.

The application discloses a 505 / 95R29 special high-load radial tire for nonferrous mine and a production process thereof, and relates to the technical field of tires. The application is characterized in that a concave V-shaped structure is arranged at the tire shoulder and the tire side, the transverse pattern groove of the tire tread extends to the tire side and is provided with a heat dissipation groove; the ring part is designed with full interference and is provided with anti-skid protrusions; a five-layer belt structure is adopted, the B1 belt layer is a two-piece small-angle split structure, and nylon reinforcing layers are arranged on both sides of the tire body. The application fills the design and development blank of the 505 / 95R29 special high-load radial tire for nonferrous mine by developing a new 505 / 95R29 special high-load radial tire for nonferrous mine and adopting a new production process, and solves the problems of insufficient load capacity of the current product of the large-tonnage wide-body vehicle and high failure.

This invention provides a multilayer inductor assembly for use in the field of inductors. The assembly includes a coil group wound around the outside of a magnetic core. A heat-conducting sleeve is sandwiched between the coil group and the magnetic core. A lower end cover and an upper end cover are fixed to both ends of the magnetic core, respectively. A base is provided at the bottom of the lower end cover and is mounted on a circuit board. When the multilayer inductor assembly is in operation, the heat generated by the coil group rises along the spiral outer air groove, enters the upper mounting groove of the upper end cover, and is dissipated to the outside through the gaps in the vortex heat sink. This forms a continuous air circulation cooling process, effectively solving the problems of poor heat dissipation and inconvenient installation of existing inductors, and improving the performance and reliability of the inductor assembly.

The utility model discloses a kind of communication equipment of ethernet isolated network, including multi-machine communication circuit, FPGA transmission data circuit, fan control circuit and power-on delay circuit.Multiple machine communication circuit realizes and communicates with external multiple equipment;FPGA transmission data circuit is shaped to transmission data and is handled;Fan control circuit connects cooling fan, and it is controlled to start and stop;Power-on delay circuit is connected between each functional circuit and external power supply, and power supply output electric energy is delayed and then supplied to each circuit, and the utility model realizes the orderly start of each functional module by power-on delay circuit, avoid the surge current generated by simultaneous power-on to cause damage to circuit, improve equipment stability.

This invention provides a cooling device for a wind turbine gearbox, comprising a wind turbine gearbox; a housing and a cooling tank are respectively arranged on both sides of the gearbox; a heat exchanger is fixedly installed on one side of the housing, one end of the heat exchanger is fixedly connected to a first cooling pipe, the other end of the first cooling pipe is fixedly connected to a delivery pump, and the input end of the delivery pump is fixedly connected to a second cooling pipe. This invention, by setting up a housing and a cooling tank on both sides of the wind turbine gearbox and fixing a heat exchanger on one side of the housing, forms a closed-loop coolant circulation, achieving rapid heat conduction and uniform heat dissipation inside the wind turbine gearbox. The coolant circulates through the first, second, and third cooling pipes and the cooling tank, carrying the gearbox heat to the cooling tank and releasing it to the outside air through the heat exchanger, effectively reducing the gearbox temperature and improving the operational stability of the equipment.

This invention provides an axial flux motor, comprising: a first rotor; a second rotor; a stator located between the first rotor and the second rotor; and a first end cover disposed outside the first rotor. The first rotor includes a first rotor magnet and a first support plate in direct contact with the first rotor magnet. The surface of the first support plate is rough. The first end cover includes: a first oil passage including a first plurality of oil injection holes; and a first oil pipe connected to the first oil passage and an external oil pump. Cooling oil enters the first oil passage from the external oil pump via the first oil pipe and is sprayed from the first plurality of oil injection holes in the first oil passage onto the surface of the first support plate. Furthermore, this invention provides a method for cooling the axial flux motor. This invention effectively solves the heat dissipation problem of the axial flux motor, thereby significantly improving the heat dissipation efficiency of the axial flux motor, reducing the operating temperature of the axial flux motor, and extending the service life of the axial flux motor.

This utility model discloses a cycloalkane dehydrogenation system, belonging to the field of cycloalkane dehydrogenation technology. The cycloalkane dehydrogenation system includes a reaction feed heat exchanger, a steam condensate preheater, a reactor steam preheater, a reaction discharge cooler, a heat transfer medium steam heat exchanger, a dehydrogenation reactor, and a separator. The reaction feed heat exchanger, steam condensate preheater, and reactor steam preheater are sequentially connected to the feed inlet of the dehydrogenation reactor. The product outlet of the dehydrogenation reactor is sequentially connected to the reaction feed heat exchanger, reaction discharge cooler, and separator. The steam condensate outlet of the reactor steam preheater is connected to the steam condensate preheater. The gaseous product outlet of the separator is connected to a circulating hydrogen pipeline. The steam condensate outlet of the heat transfer medium steam heat exchanger is connected to the steam condensate preheater. This cycloalkane dehydrogenation system can extend the lifespan of the heat transfer medium, fully utilize the energy of high-pressure steam, and extend the catalyst lifespan.

The utility model discloses a kind of packaging tape film covering device, it is related to covering device technical field, including covering assembly and active cooling assembly, covering assembly, the covering assembly includes support table, the top of the support table is fixed with guiding limiting piece, the side of the support table is fixed with driving transmission part, the side of the support table is provided with raw material placing piece, the top of the support table is fixed with covering piece, active cooling assembly, setting at the bottom of covering assembly, including water-cooling circulation piece.The device of the utility model by active water-cooling circulation mechanism and conical water-collecting mechanism, significantly improve the film cooling efficiency and stability, effectively solve the problem of uneven heat dissipation and condensate pollution, both guarantee the forming quality of covering material, avoid the production efficiency loss caused by cooling defect, simultaneously realize the efficient operation of cooling system, substantially improve the yield of covering process and production efficiency.

This invention discloses an optical waveguide module, relating to the field of optical device technology. It includes a substrate, an optical waveguide layer on top of the substrate, and a buffer layer with a continuously curved, wave-shaped design between the substrate and the waveguide layer. This invention forms a stress-relieving structure based on the wave-shaped buffer layer, substrate, and waveguide layer, achieving thermal expansion coefficient matching and bending stress dispersion between the substrate and the waveguide layer. Simultaneously, combined with various adhesion enhancement layers, it ensures the long-term stability of the multi-layer interface. Furthermore, the input coupling layer employs a composite design of a blazed grating and a subwavelength grating, significantly improving the coupling efficiency from visible light to near-infrared. The output coupling layer achieves wide field-of-view output through a gradient periodic grating, adapting to large viewing angle requirements. Additionally, it integrates a modulator and a graphene thermal conductive layer, simultaneously solving the problems of high-speed modulation and heat dissipation, significantly improving the optical performance, thermal stability, and mechanical reliability of the optical waveguide module.

This invention discloses a battery pack structure, relating to the field of battery pack heat dissipation technology. It includes a lower temperature equalization unit and an upper dual-mode heat dissipation unit. The lower temperature equalization unit includes a housing containing battery cells filled with an insulating and thermally conductive immersion liquid, ensuring complete immersion of the cells for uniform temperature distribution. The upper dual-mode heat dissipation unit includes a dual-cavity heat dissipation aluminum cover sealed to the top of the housing. Its lower side is attached to the battery cell terminals and aluminum foil via an insulating and thermally conductive elastic pad, dissipating the most concentrated heat from the top via the shortest path. The dual-cavity heat dissipation aluminum cover integrates a liquid cooling channel and an air cooling channel located above it. This invention, through a thermodynamically optimized design of "bottom full immersion temperature equalization + top directional heat conduction," completely eliminates the temperature difference between the top and bottom of the battery cells. Combined with dual-mode switching of air cooling priority and liquid cooling backup, it significantly improves heat dissipation efficiency, battery cell temperature uniformity, safety, cycle life, and reduces energy consumption.

The utility model relates to paper product manufacturing technical field, paper product manufacturing cutting device is provided, including equipment base, the top fixed connection of equipment base has transmission case, the top fixed connection of transmission case has work table, the top inner wall sliding connection of work table has cutting knife, the top fixed connection of transmission case has cutting frame, the utility model discloses the composite motion of cutting knife is realized through transmission, promotes cutting efficiency and accuracy, and driving motor drives screw rod rotation, and screw cover drive driving rack along rack light pole sliding, and gear is engaged with driving rack, fixed rack simultaneously, and the autorotation of horizontal movement happens, and driving cutting knife does mobile and rotates composite cutting, and the gear and cutting knife are oriented and limited respectively by limiting rod and limiting groove, sliding block and support rod, ensure that motion is stable, solve the low cutting efficiency of prior art, the poor heat dissipation of motor, the problem of insufficient transmission stability.

This application relates to the field of cable protection pipe technology, and in particular to a low-temperature impact-resistant CPVC cable protection pipe, which includes a protection pipe body, an insulation layer, and a circulation mechanism. An impact-resistant mechanism is fixedly connected to the inner side of the protection pipe body. A cable body is inserted through the insulation pipe body inside the impact-resistant mechanism. A heat exchange mechanism is fixedly connected to the outer surface of the insulation pipe body. The circulation mechanism is located at the top of the protection pipe. This technical solution, through its heat exchange, circulation, impact resistance, and heat recovery structure, combined with a composite insulation layer and a suitable heat exchange medium, efficiently absorbs solar energy and recovers waste heat from the cable, continuously insulating the protection pipe body day and night, resisting external impacts, preventing low-temperature embrittlement and cable overheating, adapting to different low-temperature environments, reducing heat loss and energy consumption, and solving the problems of existing CPVC cable protection pipes such as poor resistance to low temperatures, weak impact resistance, and limited adaptability.

The utility model relates to the field of medicine production technology provides a medicine production system, including spray drying tower, still include first layer space, second layer space and third layer space along the height direction are sequentially arranged, the spray drying tower is located first layer space with second layer space, third layer space with first layer space all is equipped with the new air collection mouth, first layer space still is equipped with the exhaust room, between first layer space with second layer space and between second layer space with third layer space all are separated through the platform with the hole. The utility model discloses through the new air collection mouth of different floor space, the setting of exhaust room, again cooperate with the platform with the hole, can realize the air circulation of three floor space, reach the purpose of taking away room heat, solve the cooling problem in the industry on one hand, save the mechanical ventilation system of spray drying room on the other hand, thereby reduce equipment investment and operating cost.

The utility model discloses a kind of multi-path pulse xenon lamp synchronous triggering device, it is related to xenon lamp field, including device main body, pulse capacitor and pulse transformer, the inside of device main body is equipped with wind box, the wind box air outlet end is equipped with air outlet pipeline, the inside of device main body is equipped with two groups of radiators, two groups of radiator one end are connected with air outlet pipeline, the side of device main body is equipped with two groups of first air outlet, the pulse capacitor outer wall is equipped with heat ring pipe, the heat ring pipe one end is equipped with air outlet pipe, the side of device main body is equipped with second air outlet.The utility model is equipped with wind box, air outlet pipeline, radiator and heat ring pipe, so that airflow enters the inside of wind box through air inlet, then airflow enters the inside of air outlet pipeline, reduce the loss of pulse transformer and pulse capacitor, improve the service life of pulse transformer and pulse capacitor.

The application discloses an open type spaceborne SAR array surface power supply and an assembling method thereof, and the array surface power supply comprises a cover plate, a frame and a bottom plate; the cover plate, the bottom plate and the frame are connected through fasteners; a small supporting plate and a large supporting plate are integrally arranged in the frame; a power transformer and a power inductor are assembled on the front surface of the small supporting plate and the large supporting plate; a printed board is further assembled in the frame, and the printed board is located in the same plane as the small supporting plate and the large supporting plate; all components except the power transformer and the power inductor are arranged on the printed board. In the application, the main components in the single machine are arranged on the board and are double-sidedly distributed, the volume and weight of the single machine are reduced to half of the traditional design under the premise of solving the space environment heat dissipation problem; the open type structure design is adopted, the surface-mounted test pads are introduced on the back of the printed board, and great convenience is brought to the batch production and debugging of the product.

The utility model belongs to antenna technical field especially is a kind of phased array antenna heat abstractor, including the cold plate that is attached and installed on TR component and with multiple refrigerant flow passages in its inside, cold plate input is connected with refrigerant supply component through input pipe, and cold plate output forms closed loop circuit with refrigerant supply component through output pipe, it further includes controller and the first temperature measuring portion installed on TR component, output pipe is equipped with heat abstractor and second temperature measuring portion, and controller is based on TR component surface temperature and refrigerant temperature after heat dissipation, adjusts the operating state of refrigerant supply component, the utility model can carry out heat dissipation before refrigerant backflow to refrigerant supply component, reduce the operating power of refrigerant supply component, improve the heat dissipation efficiency of TR component;According to the temperature of TR component surface and the temperature of refrigerant after heat dissipation monitored by first temperature measuring portion to dynamically adjust refrigerant supply component operation, balance TR component temperature and refrigerant heat dissipation capacity, solve the energy waste or heat dissipation deficiency problem caused by traditional fixed power heat dissipation.

The utility model relates to a kind of evaporation subassemblies of vacuum coating machine, belong to vacuum coating machine technical field, including the outer boat body and inner boat body with inside and outside settings, the bottom end fixedly connected with base of outer boat body, the inside embedded setting of base has heat preservation bottom layer, the both ends embedded setting of outer boat body has mount pad, the inboard fixedly connected with heating source of mount pad, the bottom end fixedly connected with heating plate of heating source, the top of inner boat body is equipped with installation cavity, the inside embedded setting of installation cavity has auxiliary heating plate, the surface fixedly connected with outer insulating layer of outer boat body. Through the outer boat body and inner boat body of inside and outside cover settings cooperate embedded setting auxiliary heating plate, reach the effect that effectively guarantee that evaporation subassembly whole has good heat preservation and heated uniformity, through installation cavity reach the effect that auxiliary heating plate is installed limit, effectively guarantee that heating power distribution is uniform, through outer insulating layer further avoid evaporation subassembly overall heat dissipation, play heat preservation protection effect.

The utility model discloses a high heat dissipation type combined circuit board connecting structure belongs to electronic circuit packaging technical field, including circuit board, aluminium base plate and glass board, the aluminium base plate partial inlay is in glass board, the surface fixed with a plurality of heat conduction bosses of aluminium base plate, the glass board inside is equipped with a plurality of heat conduction through -hole, and heat conduction through -hole and the heat conduction boss on aluminium base plate correspond inlay, and the heat conduction through -hole is filled with graphene heat conduction glue, the surface of glass board is provided with copper foil wiring area, and the copper foil wiring area is covered with solder resist layer outward. This high heat dissipation type combined circuit board connecting structure, convenient connection has solved the contradiction of traditional circuit board heat dissipation and wiring, is applicable to new energy automobile, industrial power supply and other high heat consumption electronic equipment, has the advantages such as high heat dissipation efficiency, strong reliability, good process compatibility.

The utility model relates to a novel drying system after passivation for a strip steel hot galvanizing aluminum magnesium continuous production line, which comprises a combustion engine furnace body and an air bellow, the upper part of the air bellow is connected with a circulating air pipe, the circulating air pipe is connected with the combustion engine furnace body, the combustion engine furnace body is connected with the lower part of the air bellow through a fan, and the lower end of the circulating air pipe is provided with an air valve. And a strip steel outlet is formed in the upper end of the air bellow. And a fresh air inlet is formed in one side of the burner furnace body. According to the utility model, the problems of non-uniform heat dissipation and low utilization efficiency of hot air in the original drying equipment are solved, the air with waste heat is reheated by the burner furnace body, the energy consumption is greatly reduced, and the manual control of the air volume is increased by the air valve.

The application discloses a movable emergency modular transformer substation, and relates to the technical field of transformer substations. The transformer substation comprises a shell, universal wheels, a voltage transformation mechanism and a temperature control mechanism. The voltage transformation mechanism and the shell are fixedly connected, the temperature control mechanism and the shell are fixedly connected, the temperature control mechanism and the voltage transformation mechanism are communicated, the shell and the universal wheels are fixedly connected, the universal wheels are located below the shell, and the temperature control mechanism is located on the periphery of the shell. The shell provides high-strength physical protection and support space for the whole device. The universal wheels located below the shell endow the transformer substation with flexible moving capability, so that the transformer substation can quickly respond to emergency demands. The voltage transformation mechanism is fixed in the shell to perform core voltage conversion operations. The temperature control mechanism located on the periphery of the shell and communicated with the voltage transformation mechanism can perform real-time thermal management on the internal environment of the shell, so that the voltage transformation mechanism can stably operate for a long time at a suitable temperature.

This utility model provides a projection lamp assembly and a vehicle, belonging to the technical field of automotive parts, including: a cooperating housing and a metal heat sink base; a first circuit board disposed inside the housing, the bottom surface of the first circuit board being attached to one surface of the metal heat sink base and a light-emitting element mounted on the top surface; a heat-conducting layer disposed outside the lens barrel module and attached to the outer wall surface of the lens barrel module, a portion of the heat-conducting layer corresponding to the location of the film assembly and another portion being attached to or in contact with the top surface of the first circuit board, the thermal conductivity of the heat-conducting layer being greater than that of the lens barrel module; the beneficial effects of this utility model are: the heat-conducting layer can guide the heat accumulated in the lens barrel module to the first circuit board, so that the heat is released, reducing the internal temperature of the lens barrel module, thereby reducing the deformation of the imaging lens group caused by heat, and avoiding the reduction of projection clarity due to long-term use.

This invention discloses a rainproof and heat dissipation system and control method for photovoltaic transformer substations, relating to the field of photovoltaic power station technology. The rainproof and heat dissipation system includes a transformer substation housing, a first air inlet, a first exhaust outlet, a first exhaust power component, a second air inlet, a second exhaust outlet, a second exhaust power component 51, an internal circulation power component, an opening adjustment device, and a control device. The first air inlet is located at the lower part of the housing housing; the first exhaust outlet is located at the top of the housing housing; the second air inlet is located at the upper part of the housing housing; the second exhaust outlet is located on the side wall of the housing housing opposite to the second air inlet; and the internal circulation power component is located inside the housing housing. During rainfall, the rainproof and heat dissipation system provided in this application can achieve rainproof function by reducing or closing the first air inlet and / or the second air inlet, while simultaneously achieving internal circulation heat dissipation through the internal circulation power component. This effectively solves the problem of the conflict between rainproofing and heat dissipation.