28results about How to "Increase local temperature" patented technology

The invention discloses a preparation method of a cement-based structured electrolyte with high ion conductivity and the electrolyte, and the preparation method comprises the following steps: mixing a polymer solution, cement and fine sand to obtain a polymer-cement paste; and performing low-temperature closed maintenance on the polymer-cement paste, and standing at room temperature to obtain the cement-based structured electrolyte. The controlled phase separation technology is adopted, elastic phase separation of a polymer network is carried out earlier than cement hydration, cement becomes a framework of the polymer network in a self-adaptive mode in the hydration process, the interface of the polymer network and the cement is good, and a continuous high-conduction ion channel can be formed; and the preparation process is simple to operate and high in repeatability.

According to the epoxypropane production system and method with the high conversion rate and the high yield, the interior of the reactor is divided into the upper section and the lower section through the production system, the accurate feeding proportion of three materials is provided, and the mode of segmented control and distributed feeding is provided; propylene and most of hydrogen peroxide diluted by a solvent are added into a first reaction section at the bottom through a first-stage feeding distributor for reaction, and then a reaction mixed solution of the residual solvent and hydrogen peroxide is supplemented into a second reaction section through a second-stage feeding distributor, so that reaction materials are uniformly mixed for reaction; the problem that the temperature is too high and hydrogen peroxide is decomposed due to uneven mixing caused by one-time adding or non-distributed adding of materials is avoided, the conversion rate of the materials is increased, meanwhile, fins are arranged on the outer sides of the catalytic tubes, the heat exchange area is increased, reaction heat is discharged in time, hydrogen peroxide decomposition is avoided, and the catalytic effect is improved. The selectivity and the yield of the product epoxypropane are further improved.

The utility model relates to the technical field of butyronitrile glove production, in particular to a butyronitrile glove processing drying and blowing device capable of preventing local temperature from being too high, which comprises a bottom plate, a drying and blowing bin and a collecting mechanism, a drying and blowing mechanism is arranged at the upper end of the bottom plate, the drying and blowing bin is arranged at the upper end of the bottom plate, and the collecting mechanism is arranged at the lower end of the drying and blowing bin. Filter screens are installed at the front end and the rear end of the drying and blowing bin in an embedded mode, clamping grooves are symmetrically formed in the two sides of the drying and blowing bin, a moving mechanism is arranged at the upper end of the bottom plate, third connecting rods are symmetrically connected between the drying and blowing mechanism and the moving mechanism, and a collecting mechanism is arranged at the upper end of the bottom plate. A moving mechanism is arranged, in the using process, a second connecting block drives a first connecting rod to move and drives a gear to move at the same time, and when the gear is connected with a gear block in a meshed mode, the gear is driven to rotate on the side edge of the first connecting rod, so that the butyronitrile gloves clamped by a clamp rotate, and the butyronitrile gloves are evenly dried; the over-high local temperature of the butyronitrile glove is avoided.

This application discloses a method and related device for controlling in-vehicle temperature, relating to the field of automotive control technology. The solution includes collecting vehicle operating environment information, determining a target heating component and its corresponding target temperature value, as well as the target heating power of the air conditioner, based on the collected information. Both the target heating power and the target temperature value are positively correlated with the initial heat required to reach a specified in-vehicle ambient temperature. Finally, the temperature of the target heating component is controlled based on its target temperature value, and simultaneously, the heating power of the air conditioner is controlled based on the target heating power. In a coordinated control scenario, since the internal heating component is already activated to conduct heat to the user's local area, the local temperature can be quickly increased. Therefore, the heating power of the air conditioner can be appropriately reduced, thereby reducing the overall vehicle power consumption and increasing the electric vehicle's range in cold conditions.

The application provides a high-corrosion-resistance stainless steel wire and a preparation method thereof, and the stainless steel wire is prepared by twice roll die wire drawing; the rough roll-drawn stainless steel wire is preheated to 200-400 DEG C before the second roll die wire drawing, and the preheating temperature of the edge and corner positions is 30-80 DEG C higher than that of the plane position; the stainless steel wire drawn by the second roll die is cleaned by an ultrasonic cleaning tank with an emulsion containing lipophilic group modified nano-silicon dioxide as a cleaning medium. The preparation method provided by the application can effectively release the residual internal stress in the stainless steel wire, avoids the reduction of corrosion resistance caused by the tearing of the surface passivation film by the internal stress, and can completely clean the oil stains and corrosive substances remaining in the wire drawing and pickling processes, thereby reducing the risk of pitting effect and effectively improving the corrosion resistance of the stainless steel wire. The preparation method of the stainless steel wire provided by the application has the characteristics of simple process, environmental friendliness and significant improvement of the corrosion resistance of the stainless steel wire, and has a wide application prospect.

The invention relates to the technical field of heating paste production, in particular to heating paste and a preparation process thereof. The invention discloses a ginger root soap, which is prepared from the following raw materials in parts by weight: 55 to 65 parts of water, 5 to 10 parts of glycerol, 3 to 8 parts of propylene glycol, 2 to 4 parts of ginger root extract phospholipid nanoparticles, 2 to 4 parts of cinnamon extract, 1 to 3 parts of polyethylene glycol, 2 to 5 parts of PEG-40 hydrogenated castor oil, 2 to 5 parts of hydrogenated polyisobutene, 0.5 to 1.5 parts of carbomer, 0.5 to 1 part of triethanolamine and 0.5 to 1 part of phenoxyethanol. The composition is prepared from the following components in parts by weight: 0.5 to 1.5 parts of chitosan, 0.1 to 0.5 part of essence, 0.1 to 0.5 part of vanillyl butyl ether, 0.5 to 1 part of ethylhexylglycerin and 0.5 to 1 part of pepper seed oil. The ginger root extract is subjected to enzymolysis through protease, release of active ingredients such as gingerol is promoted, and the heating performance of the heating paste is enhanced; and the phospholipid nano-load enzymolysis ginger root extract is utilized to reduce the oxidation of gingerol and other components and maintain the heating effect.

The utility model discloses a hot air drying device for barrier paper, and belongs to the technical field of drying equipment. The device comprises a drying box and paper, the drying box comprises a drying device and a dehumidification device arranged in the drying box, the dehumidification device comprises a filling device and a dehumidifier, the drying device comprises a heater, an air outlet header pipe and an air outlet used for evenly spraying out hot air, and the heater is communicated with the interior of a dryer through the air outlet header pipe. By arranging the air outlets with different lengths, the filling device, the filter screen and the dehumidifier, not only can the drying effect be further enhanced, but also moisture formed in the drying process can be completely adsorbed and removed, the guide roller is prevented from rusting, and the production quality is improved.

The present invention discloses a three-dimensional breeding method and system for cutting seedlings. The method is executed by the system. The method mainly includes the following steps: constructing a vertical seedling rack in a seedling greenhouse, the vertical seedling rack includes a plurality of plate heat exchangers arranged horizontally and at equal intervals in the height direction, laying seedling soil on the top surface of the plate heat exchanger, planting cutting seedlings on the seedling soil, installing a lighting lamp between two plate heat exchangers, circulating water in the plate heat exchanger, so that the plate heat exchanger performs heat exchange with the lighting lamp and the seedling soil. The heat emitted from the back of the lighting lamp is taken away by the water in the plate heat exchanger, and will not affect the temperature of the seedling soil. The light and heat emitted from the front of the lighting lamp will cause the temperature of the seedling soil to rise, but at the same time, the seedling soil maintains its own temperature through the water in the plate heat exchanger, thereby avoiding the local temperature of the seedling soil from being too high.

The present disclosure relates to a sulfuric acid dechlorination system for chlor-alkali production, comprising a heating module, a dechlorination dilute sulfuric acid storage tank and an air blowing pipeline connected in communication, an air inlet end of the air blowing pipeline being connected with a compressed air source, an air outlet end of the air blowing pipeline being connected with a gas distributor arranged in the dechlorination dilute sulfuric acid storage tank; the heating module is used for heating at least part of the air blowing pipeline to make the compressed air in the air blowing pipeline reach a preset temperature. Through the above technical scheme, the sulfuric acid dechlorination system for chlor-alkali production can improve aeration uniformity and dechlorination efficiency.

The invention relates to the technical field of heating equipment, and provides a heating tray assembly and fast food heating equipment using the same. Comprising a bottom plate and an air outlet plate, and a heat flow channel is formed between the bottom plate and the air outlet plate; a plurality of transverse air outlet holes and a plurality of vertical air outlet holes are formed in the air outlet plate; a bending part is formed on one side of the bottom plate in the direction far away from the air outlet plate, and a heat insulation plate is arranged between the bottom plate forming the bending part and the air outlet plate; the starting end of the heat insulation plate is attached to the starting end of the bent part, and the tail end of the heat insulation plate is attached to the tail end of the bent part. And an air flow inlet is formed between the heat insulation plate and the air outlet plate. The heating tray assembly has the beneficial effects that heat brought by hot air entering the heating tray assembly can heat food on the upper portion through the bottom plate and can also flow out through the air outlet plate to heat food below the heating tray assembly, the food is evenly heated, the food is evenly heated from the upper direction and the lower direction, and the heating efficiency is high.

The utility model discloses an AC inductor box easy to dissipate heat, which comprises a shell, a heat conducting plate is laid at the top of the shell, a plurality of heat dissipation fins are arranged at the top of the shell, the heat conducting plate penetrates through the plurality of heat dissipation fins, two ends of each heat dissipation fin extend to two sides of the shell, at least one heat dissipation pipe is arranged on two sides of the shell, the heat dissipation pipes penetrate through the plurality of heat dissipation fins, and the heat dissipation fins are arranged on the heat conducting plate. The heat dissipation device has the advantages of being compact in structure and good in heat dissipation effect.

The invention discloses a multi-station double-sided grinding device for ceramic bowls and a method for using the device, which relates to the technical field of ceramic processing, and comprises a workbench, wherein two groups of supporting legs are symmetrically installed at the bottom of the workbench, and further comprises: a spray assembly, which is arranged at the bottom and one side of the top of the workbench, a grinding assembly, which is arranged at the other side of the top of the workbench, and a U-shaped frame, which is fixedly installed at the bottom of the workbench, a driving motor is fixedly installed at the bottom of the U-shaped frame, and the output end of the driving motor passes through the U-shaped frame and is fixedly installed with a rotating shaft; so that the ceramic bowl can be sprayed while being ground to cool the ceramic bowl, so as to avoid cracking of the ceramic bowl caused by excessive local temperature during grinding, and to avoid affecting the grinding quality of the ceramic bowl, and the grinding of the ceramic bowl can be cleaned by spraying with the help of a water column, so as to reduce the production process of the ceramic bowl and improve the production efficiency of the ceramic bowl.

The invention relates to the technical field of automatic unloading at the bottom of a substrate glass kiln, and discloses a device and a method for automatic unloading at the bottom of the substrate glass kiln, the device for automatic unloading at the bottom of the substrate glass kiln comprises a heating system, the heating system is directly installed under an unloading port at the bottom of the kiln, and the unloading port is connected with the heating system. The high-altitude operation requirement of operators is obviously reduced, the scalding risk possibly caused by direct operation of high-temperature molten glass is avoided, and the safety of the whole operation environment is improved; the heating system provided by the invention adopts a circular ring pipe design, and a plurality of flame nozzle openings are formed above the circular ring pipe at intervals, so that a larger area of the periphery of the discharge opening can be uniformly heated, and compared with local heating of a single oxyhydrogen gun, the temperature required for melting molten glass can be quickly reached, so that the operation time is greatly shortened, and the production efficiency is improved; in addition, by means of mixed combustion of natural gas and oxygen, higher heat efficiency is provided, and stability and controllability of flames are guaranteed.

The present invention relates to the field of semiconductor equipment. Provided are a substrate processing apparatus and method. The apparatus comprises a clamp mechanism, a spray head mechanism, a rotary drive mechanism, a heating mechanism, and a control mechanism. The heating mechanism comprises a heating plate arranged below a substrate, wherein the heating plate is provided with at least two cavities in a radial direction, and the cavities are distributed at different radii. During the process of the liquid nozzle moving from the center of the substrate to the edge of the substrate along the radial direction of the substrate, when the liquid nozzle moves to a certain area above the substrate, the control mechanism controls the thermal energy of fluid in the cavity located at the corresponding radius of the area, thereby improving the local temperature of the substrate below the liquid nozzle. The apparatus can dynamically and accurately control the heating of a substrate region in a partitioned manner, thereby realizing accurate control of the surface tension and the evaporation speed of a liquid on a surface of the substrate in a drying process, and avoiding damage to fine pattern structures on the surface of the substrate in the drying process.

The utility model discloses a sugar juice stirring device for canned fruit processing, which comprises a constant-temperature base and a stirring tank, a cavity structure is arranged in the side wall of the stirring tank, side frames are rotatably connected to two sides of the stirring tank, the side frames are fixedly arranged at the top of the constant-temperature base, the constant-temperature base is connected in the cavity structure of the stirring tank, and the stirring tank is arranged in the cavity structure of the stirring tank. A driving motor is arranged on the side frame at any end, a lower fixing plate is arranged on the side frame at the other end, fixing rods are symmetrically arranged on the lower fixing plate, and a driving mechanism is arranged at the upper ends of the fixing rods. Hot air is circularly fed into the side wall of the stirring tank through the constant-temperature base, so that the temperature of the stirring tank is ensured, and sugar juice is prevented from being solidified; the problems that sugar juice in a low-temperature state is easy to solidify and cannot be stirred in the prior art are solved, and the sugar juice is scraped off from the side wall of the stirring tank through the side rods and the bottom rod, so that the local temperature of the sugar juice is prevented from being too high, and the temperature of the sugar juice is uniform.

The invention relates to an anti-sticking film aluminum profile die-casting device, and relates to the technical field of die die-casting, the anti-sticking film aluminum profile die-casting device comprises a main die, an auxiliary die, a cooling device, a temperature detection device, a controller, an upper base plate and a lower base plate, the cooling device comprises cooling channels, and the cooling channels comprise the cooling channel A, the cooling channel B, the cooling channel C and the cooling channel D; the cooling channel A and the cooling channel B are distributed and formed in the main mold core in parallel, the cooling channel C and the cooling channel D are distributed and formed in the auxiliary mold core in parallel, and the cooling channel C and the cooling channel D are perpendicular to the cooling channel A and the cooling channel B. The cooling device further comprises sprayers, the sprayers are arranged in the cooling channels, each sprayer comprises an electric telescopic rod and a nozzle, the electric telescopic rods are in signal connection with the controller, the sprayers arranged in the cooling channel A and the cooling channel B are oppositely arranged, and the two sprayers are oppositely arranged in each of the cooling channel C and the cooling channel D. The mold has the technical effect of preventing the mold sticking phenomenon in the mold cavity.

This invention relates to the field of insulation board technology, specifically a lightweight steel keel sandwich insulation wall panel structure for building insulation. It includes a metal panel, sub-grooves, a main groove, and a rock wool core. The sub-grooves and main groove are respectively located at the upper and lower ends of the metal panel, and are matched to prevent rainwater from entering through gaps between the metal panels. The rock wool core is laminated to the inner wall of the metal panel, and a seepage monitoring mechanism is installed inside the rock wool core. Color changes provide a direct warning of seepage conditions, facilitating timely detection and remedial treatment of seepage points. It also increases the local temperature of the rock wool core, accelerating the natural evaporation of moisture and effectively shortening the time the rock wool core is exposed to moisture. Furthermore, it enables automatic dehumidification of the rock wool core, automatically resetting and closing the channels to prevent the rock wool core from aging due to prolonged contact with the outside environment, fundamentally solving the problem of rock wool's inability to actively dehumidify after becoming damp.

This application relates to the field of display technology, disclosing an adhesive layer and its preparation method, a flexible display panel, and a display device. The adhesive layer includes: a first flexible layer, a heat dissipation layer, and a second flexible layer sequentially disposed therefrom; wherein the heat dissipation layer includes a graphene layer and a step adhesive layer; the first flexible layer has a first surface connected to the heat dissipation layer; the graphene layer has a second surface connected to the first flexible layer; the area of ​​the second surface is smaller than the area of ​​the first surface; the step adhesive layer is distributed on the outer periphery of the graphene layer such that the sum of the projected area of ​​the step adhesive layer on the first surface and the area of ​​the second surface equals the area of ​​the first surface. Applying this flexible display panel can effectively improve the heat dissipation uniformity of the flexible display panel.

The utility model relates to the technical field of silicon carbide production, and provides a raw material preheating device for silicon carbide production. The screening part is arranged on one side of the furnace body; the upper tray is arranged in the upper furnace chamber in a sliding manner, and the upper tray is used for bearing large-particle materials screened by the screening part; the lower tray is arranged in the lower furnace chamber in a sliding manner and is used for receiving small-particle materials screened by the screening part; the uniform distribution piece is arranged on the furnace body and is used for flatly laying materials on the upper tray and the lower tray; and the heating piece is arranged in the upper furnace chamber and the lower furnace chamber. By means of the technical scheme, the problem that in the prior art, raw material particles with different sizes are prone to being heated unevenly is solved.

The application provides a defrosting control method of a refrigeration equipment and the refrigeration equipment. The defrosting control method comprises the following steps: controlling a compressor to stop working, connecting a liquid storage tank and a condenser to make refrigerant in the liquid storage tank flow into an evaporator, and judging whether a time length S1 of the connection of the liquid storage tank and the condenser is greater than or equal to a preset refrigerant flow time length S2; when the time length S1 is greater than or equal to the preset refrigerant flow time length S2, the connection of the liquid storage tank and the condenser is controlled to be disconnected; controlling a defrosting heater to work, starting a circulating device used for driving refrigerant in a defrosting circuit to flow, and judging whether a temperature T1 of the evaporator is greater than or equal to a preset evaporator temperature T2; when the temperature T1 is greater than or equal to the preset evaporator temperature T2, the defrosting heater and the circulating device are controlled to stop working; and controlling the compressor to be connected with the liquid storage tank. In the defrosting process, the refrigerant in the liquid storage tank is introduced into the evaporator, and the circulating device is used to accelerate the flow of the refrigerant in the defrosting circuit, so that the local temperature of the evaporator is prevented from being high during the defrosting, and the preservation of food in the refrigeration equipment is prevented from being affected.

The invention relates to the technical field of heating equipment, and provides fast food heating equipment based on hot air. Comprising a box body assembly, a heating chamber assembly and a hot air machine assembly are arranged in the box body assembly, and a plurality of heating tray assemblies are arranged in the heating chamber assembly up and down; an air outlet in the hot air machine assembly is communicated with an air inlet of each heating tray assembly through the splitter plate assembly; the air outlet hole of each heating tray assembly is formed downwards, and hot air flowing out of the air outlet holes passes through the space between every two adjacent heating tray assemblies and then is collected into the air return duct. The heating tray assembly has the beneficial effects that the flow of hot air entering each heating tray assembly in unit time is equal through the splitter plate assembly, heat brought by the hot air entering each heating tray assembly can heat food on the upper portion through the bottom plate and can also flow out through the air outlet plate to heat food below the heating tray assembly, the food is evenly heated, and the heating efficiency is improved. And the food is uniformly heated from the upper direction and the lower direction, and the heating efficiency is high.

This application relates to a charging device, including a housing, a bottom cover, a coil module, and a charging module. The housing has a receiving cavity and a first mounting slot. The housing also includes a heat insulation component located between the receiving cavity and the first mounting slot. The coil module is mounted in the first mounting slot, and the charging device is mounted within the receiving cavity. The coil module includes a magnetic component and a coil. The coil is arranged around the magnetic component and electrically connected to the charging module, generating a current within the coil. When an electronic device contacts the coil module, it is wirelessly charged via electromagnetic induction. A heat-spreading component is provided on the side of the magnetic component and coil closest to the charging module. During operation, the temperature of the coil and the charging module rises and is conducted to the heat-spreading component. The heat-spreading component can conduct heat to the magnetic component or the housing, reducing the possibility of heat concentration and localized high temperatures within the coil module, thus improving the charging efficiency of the electronic device.

This application discloses a residential energy storage inverter, relating to the technical field of inverters. It includes a chassis with adjacent first and second regions within it. A power conversion module is arranged on the first region. The second region includes an upper and a lower layer; a power module is arranged on the upper layer, and a control module is arranged on the lower layer. A first heat dissipation fin is provided on the outer wall of the chassis, and the chassis and the first heat dissipation fin are in thermal contact. The first heat dissipation fin rests against the power conversion module. An inductor box is provided on the outer wall of the chassis, and the inductor box is in thermal contact with the outer wall of the chassis. The inductor box and the first heat dissipation fin are arranged side-by-side. By setting up the first and second regions and layering them within the second region, this application achieves a compact internal structure, reducing chassis size and wiring complexity, facilitating maintenance and repair, and lowering costs.

The invention relates to the technical field of pyrotechnic products, and discloses a pyrotechnic product for regulating ignition temperature and combustion reaction temperature based on transition metal hydroxide and a preparation method of the pyrotechnic product. The pyrotechnic composition product consists of an adhesive, a water-soluble pyrotechnic oxidant, a functional additive and a combustible agent, wherein the functional additive is transition metal hydroxide. Through co-crystallization or mixed crystal of pyrotechnic composition components and trace transition metal hydroxides and combustion catalysis of a water-soluble oxidant and carbohydrate mixed system, the ignition temperature of a pyrotechnic composition product is reduced, and the combustion reaction temperature is controllable.

The invention discloses a photo-thermal agent for treating allergic rhinitis and application of the photo-thermal agent in preparation of drugs for treating allergic rhinitis, a method comprises the following steps: firstly, reacting a compound 1 with two pyridine groups with diethyleneglycol-2-bromoethyl methyl ether to prepare an ether-oxygen chain substituted compound 2, then dissolving the prepared compound 2 and DSPE-mPEG5000 in tetrahydrofuran, and carrying out a reaction to obtain the photo-thermal agent for treating allergic rhinitis. According to the invention, the pyridinium salt group is taken as a carrier, self-assembly is carried out to form nano-particles, and the nano-particles promote intramolecular charge transfer and cause red shift of absorption wavelength due to the strong electron withdrawing effect of the pyridinium salt group, have deeper tissue penetrating power, and can effectively reach the deep part of nasal mucosa to treat deep inflammation; the RH-coated NPs prepared by the invention has both high-efficiency photothermal conversion performance and photodynamic therapy sensitivity, so that the synergistic effect of PTT and PDT on treatment of allergic rhinitis becomes possible, the treatment effect is greatly improved, and a new way is opened up for treatment of allergic rhinitis.

The invention belongs to the technical field of hazardous waste treatment, and particularly relates to a treatment method of organic hazardous waste. The method comprises the following steps: firstly, preparing a core-shell structure energetic material which contains the organic hazardous wastes or reaction products thereof and consists of a core and a shell; and secondly, combusting the obtained core-shell structure material in a closed or open space. The preparation method of the core-shell structure energetic material comprises the following steps: pretreating organic hazardous wastes to obtain solid powder; mixing the solid powder with an additive in proportion to prepare an inner core of the energetic material with the core-shell structure; mixing an oxidizing agent, a reducing agent and other energetic materials to prepare a shell of the energetic material with the core-shell structure; and finally, coating the inner core with the shell to obtain the core-shell structure energetic material. The organic hazardous waste can be treated without traditional incineration equipment, no organic matter residues exist in combustion products, the treatment effect is good, the process is short, and the cost is low.

The present invention discloses a heat exchange structure, an outdoor unit and an air conditioning system. The heat exchange structure includes at least two heat exchangers, which are configured to be able to switch between being connected in series to form a first heat exchange branch, being connected in parallel to form a second heat exchange branch, or selectively selecting one of the heat exchangers to be connected to form a third heat exchange branch. When the heat exchange structure, the outdoor unit and the air conditioning system are in use, different heat exchange branches can be switched according to user needs, so that when the compressor is running in a single cylinder, energy consumption can be reduced and frosting is not easy to occur while ensuring the refrigeration cycle.

The utility model discloses a superconductive PCB with high heat dissipation performance, which comprises a circuit board, a fan and a fixing strip, a main heat conducting plate and an auxiliary heat conducting plate are arranged on the upper surface and the lower surface of the circuit board, a soaking plate attached to the circuit board is arranged on the lower surface of the main heat conducting plate, a plurality of first fins are arranged on the surface of the main heat conducting plate, and the fan is arranged on the surfaces of the first fins. Steel wires are arranged on the surface of the fan and connected with the main heat conduction plate, and the fixing strips are fixedly connected with the auxiliary heat conduction plate. The heat of the circuit board is conducted to the main heat conduction plate through the heat uniformizing plate, the heat uniformizing plate can evenly distribute the heat to the main heat conduction plate, the heat dissipation effect of the main heat conduction plate can be achieved, the situation that the local temperature of the circuit board is too high is avoided, the fan dissipates the heat of the main heat conduction plate, and the overall heat dissipation efficiency of the circuit board is high. The steel wires achieve installation of the fan and the first fins through the main heat guide plate, the ends of the steel wires are separated from the insertion holes, the steel wires and the fan can be rapidly taken down, dust removal of the fan is facilitated, and dust mingled in the first fins can be conveniently cleaned.