30 results about "Heat conducting" patented technology

A flow-through muffler includes a plurality of heat conducting walls, baffles, or partitions that together define a plurality of passages arranged to form acoustic waveguides, attenuators, and/or cancellation chambers, the walls, baffles, or partitions increasing a surface area exposed to the exhaust gases to facilitate extraction of heat while attenuating or canceling the resulting sound pressure waves. The muffler may have a cooling arrangement mounted thereon, and thermoelectric generator elements or other heat-powered device, such as a reformer, connected across the heat differential between the cooling arrangement and an exterior surface of the muffler housing that is in thermal contact with the heat conducting walls, bafflers, or partitions. In addition, the muffler may be made tuneable by providing a device for varying a length of one of the passages relative to another passage, and by including a sound cancellation chamber at an intersection of the passages. In addition, the internal surfaces of the muffler may be coated with a catalyst to provide a combination muffler and catalytic converter.

A method for preparing a silicon carbide ceramic material with low residual silicon by adopting a multi-step reaction sintering method comprises steps as follows: carbon sources are selected, the carbon sources with different activity degrees are mixed with silicon carbide powder, phenolic resin or PVA (polyvinyl acetate) is added, the materials are mixed and subjected to powder forming, siliconizing sintering and heat treatment for removing residual silicon, finally, an obtained silicon carbide product is polished, carbon and silicon condensed on the surface are removed, the coarse surface is flattened, and a qualified silicon carbide finished product is obtained. According to the method, the problem that application of a conventional reaction sintered silicon carbide ceramic material in high temperature and corrosion environments and a high temperature difference environment is limited due to higher content of residual silicon is solved, the silicon carbide ceramic material with low residual silicon and high density can be prepared, heat-conducting property, high-temperature mechanical property, Young modulus, corrosion resistance, high-temperature conductivity and other properties of the reaction sintered silicon carbide material are greatly improved, and the application range of the reaction sintered silicon carbide material is greatly enlarged.

The invention provides a double-sided aluminum base circuit board with super-high thermal conductivity and a preparation method of the circuit board. The double-sided aluminum base circuit board comprises an aluminum base plate material, an electrical conductive hole formed on the aluminum base plate material for communicating the upper side and the lower side of the aluminum base plate material, an aluminum oxide layer formed on the upper and the lower sides of the aluminum base plate material and on the wall of the electrical conductive hole by oxidation method for insulation and heat conduction, and a DLC (diamond-like carbon) coating and a Cu coating adhered on the aluminum oxide layer. The double-sided aluminum base circuit board provided by the invention is excellent in comprehensive heat conducting property, and the surface insulation heat-conducting layer is free of high polymer materials and is excellent in flame retardant property and aging resistance. In addition, the insulation layer on the surface of the circuit board and the insulation layer on the wall surface of the electrical conductive hole are an integrated insulation heat-conducting body with the same composition and an integrated structure, thereby obviating the hole filling and the chemical copper deposition method, simplifying the process and improving the yield.

The invention discloses a preparation method of a heat-conducting, electricity-conducting and electromagnetic-shielding multifunctional composite material, and belongs to the field of preparation methods of multifunctional composite materials. According to the preparation method of the heat-conducting, electricity-conducting and electromagnetic-shielding multifunctional composite material, nanometer ferrite, graphene, copper powder, carbon black, nanometer silicon carbide and a high polymer material are added in a formula. By means of the preparation method of the heat-conducting, electricity-conducting and electromagnetic-shielding multifunctional composite material, the electromagnetic-shielding effect of the composite material can be improved, and the tensile strength, the compressive strength and other material performance of the composite material can be improved.

The invention relates to the field of energy storage devices, in particular to a battery pack. The battery pack comprises batteries, a lower box body, a fan, cooling plates and an air duct baffle plate, wherein the lower box body comprises a battery chamber, a bottom groove and a side opening; the batteries are arranged in the battery chamber; the bottom groove is located in the bottom part of the battery chamber and is separated from the battery chamber through a bottom plate of the battery chamber; the bottom plate is made of a heat-conducting material; the bottom groove extends to one side of the battery chamber; the side opening is located at the side part of the battery chamber and communicates with the bottom groove; the cooling plates are arranged in the bottom groove; and the air duct baffle plate covers the bottom part of the bottom groove; and the fan is arranged at the outer side of the side opening. According to the battery pack provided by the invention, moisture or dust can be effectively prevented from entering to cause a short circuit during the cooling process, so that the IP protection grade of the battery pack is ensured.

The invention discloses a timber drying furnace, which comprises a furnace body, and a flue connected with the burning chamber and the fume outlet of the furnace body. The flue is fixed outside the furnace body, a heat conducting oil interlayer communicated is arranged on the flue and the furnace body, an expansive oil pipe connected with atmosphere is arranged in the heat conducting oil interlayer to be used for a hydraulic pump cycled by the heat conducting oil in the heat conducting oil interlayer; the heat conducting oil is adopted as a medium, the higher drying temperature can be obtained, and the temperature is easy to be controlled, the drying time is greatly saved, because an open mouthed water collecting sump is arranged outside the heat conducting oil interlayer, the water quantity can be increased and reduced according to the demand, thereby controlling the humidity of the hot air blast, and ensuring that the drying timber is free from the crack, the deformation and the discolor, the drying is even, the product quality is improved, when the heat quantity passes through the flue, the heat conducting oil in the flue interlayer can be completely absorbed, thereby fully utilizing the heat quantity, therefore the acceleration speed is improved, the thermal efficiency is high, and the fuel material is saved.

The invention discloses a preparation method for a composite polymer film with high thermal conductivity. The preparation method comprises the following steps: firstly, mixing particles with high thermal conductivity or fibers with polymer particles, adopting an injection molding or compression molding process to obtain a first polymer film containing particles with high thermal conductivity or fibers, putting the first polymer film on a porous molding board, and putting the porous molding board into a vacuum heating tank to heat; after the first polymer film is molten, filling the porous molding board with the molten first polymer film to form a second polymer film; after certain time, taking out the porous molding board with the second polymer film from a vacuum heating tank, cooling the porous molding board with the second polymer film to the room temperature, and removing the porous molding board to obtain the second polymer film; and finally, sequentially rinsing the second polymer film by use of deionized water and absolute ethyl alcohol, and putting the second polymer film in a vacuum environment to dry to obtain the composite polymer film with high thermal conductivity. According to the preparation method, the heat-conducting property of the polymer film is improved by adding the articles with high thermal conductivity or fibers, and the heat-conducting performance of the polymer film is also improved by a porous molding board wetting technology; and the process is simple.

The invention discloses an intelligent broken limb temperature and humidity double-control box device. The device is characterized by comprising a constant-temperature constant-humidity box, an intelligent control box and a heat-conducting corrugated pipe. The constant-temperature constant-humidity box can be large or small and can be used for containing broken fingers, broken hands, broken feet,broken arms and broken legs and replaced at any time; the constant-temperature constant-humidity box is separated from the intelligent control box, is beneficial to safety and prevents the risk of secondary injuries; great convenience is provided for cleaning and disinfection; a humidifier arranged on the outer side wall of the constant-temperature constant-humidity box is a commercial product, and before use of the humidifier, bottled purified water is added into the humidifier; the humidifier is convenient, reliable, easy to operate, visual in water amount and convenient to clean. The intelligent control box is connected with the constant-temperature constant-humidity box through the heat-conducting corrugated pipe, a fan is arranged on a heat conducting pipe of a heating and humidity control box body and blows the heat of a PTC heating element into a heat preservation box body through the heat conducting pipe, and the temperature and humidity of the heat preservation box body are adjusted by a temperature and humidity controller.

The invention discloses a bus umbrella drying system. The bus umbrella drying system comprises a drying mechanism and a solar energy power supply mechanism. The drying mechanism comprises a frame. Theframe is arranged on the side, between a front door and a rear door of a bus, close to the bus doors, and is provided with a conveyor belt. Drying devices are arranged on the two sides of the conveyor belt. An arc-shaped sliding chute is arranged between the frame and the rear door of the bus. One end of the arc-shaped sliding chute is close to the drying devices and flush with the conveyor belt,and the other end of the arc-shaped sliding chute is fixed to the bottom surface of the bus. A power device is arranged at the bottom of the frame. According to the bus umbrella drying system, the conveyor belt is arranged in the bus, heat conducting plates are arranged on the two sides of the conveyor belt, constant-temperature heating pipes are arranged in the heat conducting plates, and heat is released through the constant-temperature heating pipes and is conducted to the conveyor belt through the heat conducting plates so as to dry umbrellas on the conveyor belt, so that the bus umbrelladrying system is convenient to use. Moreover, because the conveyor belt is arranged between the front door and the rear door of the bus, the umbrellas are conveyed from the front door to the rear door of the bus through the conveyor belt, and passengers getting off the bus can take the umbrellas conveniently.

The invention provides a chirped fiber grating dispersion regulating device for an ultrafast pulse laser, which is characterized in that a chirped fiber grating is fixed on a heat conducting plate through heat conducting silicone grease, the transfer of heat can be quickly realized by adopting the heat conducting silicone grease, and heat exchange between the chirped fiber grating and the heat conducting plate is enabled to be better performed. The temperature at two ends of the chirped fiber grating is regulated by using semiconductor refrigerators so as to realize the regulation for the dispersion, thereby compensating the dispersion in the system efficiency and precisely, and being capable of obtaining the optimized pulse; and the gradient direction of the temperature field is changed through the driving current of the semiconductor refrigerators by using temperature regulation characteristics of the chirped fiber grating, thereby realizing a role of bidirectional precision regulation for the dispersion of the chirped fiber grating; and the dispersion of the chirped fiber grating is continuously and precisely regulated in a bidirectional mode through controlling the temperaturedifference between two ends of the heat conducting plate.

The invention provides a spring-shaped heat sink and a radiator with the spring-shaped heat sink. The spring-shaped heat sink is formed by integrally winding a spring; the upper end of a first extension section is connected with the upper end of an upper-layer spring body and extends to the bottom surface of a lower-layer spring body, and one end of a first heat conducting section is connected with the lower end of the first extension section and coiled on the inner side of the bottom surface of the lower-layer spring body or encircled on the outer side of the bottom surface; the upper end of a second extension section is connected with the lower end of the upper-layer spring body and extends to the bottom surface of the lower-layer spring body, and one end of a second heat conducting section is connected with the lower end of the second extension section and coiled on the inner side of the bottom surface of the lower-layer spring body or encircled on the outer side of the bottom surface; the upper end of a third extension section is connected with the upper end of the lower-layer spring body and extends to the bottom surface of the lower-layer spring body, and one end of a third heat conducting section is connected with the lower end of the third extension section and coiled on the inner side of the bottom surface of the lower-layer spring body or encircled on the outer side of the bottom surface. The spring-shaped heat sink is higher in heat conduction efficiency and heat dissipation efficiency, excellent in ventilation performance, greatly reduced in weight, and settable in shape and size according to requirements.

The present invention relates to a high heat-dissipation LED substrate and a high heat-dissipation LED package using the substrate. The substrate comprises an insulating plate, a upper copper-cladding layer and a lower copper-cladding layer respectively provided on the upper and lower sides of the insulating plate; both the upper copper-cladding layer and the lower copper-cladding layer comprise heat dissipation areas and circuit areas mutually isolated; the insulating plate is provided with heat-conducting copper posts connected to the upper and lower heat dissipation areas and electric copper posts connected to the upper and lower circuit areas; the cross section of the copper post is round, 8-shaped or quincuncial; the circuit area surface of the upper copper-cladding layer is treated by roughening, and the heat dissipation area surface of the lower copper-cladding layer is provided convex-concave structures.

The invention discloses a heat pipe type photovoltaic generating thermal collection assembly. The heat pipe type photovoltaic generating thermal collection assembly mainly comprises a double-glass vacuum tube, an aluminum plate, photovoltaic plates, a U-shaped copper pipe and a heat pipe. The vertical two ends of the aluminum plate are rolled downwards, and the two rolling ends each wrap one side pipe of the U-shaped copper pipe; an upward concave arc in the middle of the aluminum plate wraps and clamps the heat pipe; the forward external surface of the evaporation end of the heat pipe is coated by a heat absorption coating; the two narrow strip-shaped photovoltaic plates are adhered to the aluminum plate and are respectively disposed at the two sides of the heat pipe; the U-shaped copper pipe and the heat pipe are adhered to the aluminum plate by use of heat-conducting glue; and the structure composed of the aluminum plate, the photovoltaic plates, the U-shaped copper pipe and the heat pipe is arranged in the double-glass vacuum pipe, and the open end of the U-shaped copper pipe and the condensation end of the heat pipe extend out of one end of the double-glass vacuum pipe. The heat pipe type photovoltaic generating thermal collection assembly can improve the water outlet temperature of a system and is applied to bathing, heating of winter water-heating radiator and the like. Air source heat pump circulation is taken as an auxiliary measure, the integral performance, the heat efficiency and the stability of the system are improved, and the power consumption in non-heating seasons is reduced.

In order to overcome the problem of incapability of timely dissipating accumulated heat efficiently due to continuous work of a fluorescent material in a traditional fluorescent illumination light source, the invention discloses a laser fluorescence excitation illumination device. The device consists of a laser light source, a reflecting bowl, a support mechanism and a fluorescence excitation device, wherein the fluorescence excitation device consists of a fluorescent turntable, a heat sink and a heat dissipating fin. The laser fluorescence excitation illumination device adopts an interval excitation mode, so that the fluorescent material is located in an intermittent working state to prevent centralized heat caused by continuous work and to improve the heat exchange efficiency. The fluorescent turntable and the heat sink are made of red copper materials with excellent heat conductivity; and heat generated by an excitation end can be quickly transferred to a back end heat dissipating structure. The back end heat dissipating structure is a of a fine structure for increasing the heat dissipating area. Heat conducting silicone grease is coated in each connected place in the device toprevent bad heat conduction caused by assembly gaps. The laser fluorescence excitation illumination device can effectively improve the heat dissipation efficiency of the fluorescent illumination device and prolong the service life of the fluorescent material.

The invention discloses a heat-conducting POM (polyformaldehyde) material and a preparation method thereof. The heat-conducting POM material is prepared from the following components in parts by weight: 60-75 parts of POM, 8-15 parts of silicon carbide, 6-10 parts of polyethylene glycol, 1-3 parts of melamine, 1-3 parts of di(dioctylpyrophosphato) oxyacetate titanate, 0.5-2 parts of 2,6-di-tert-butyl-4-methylphenol and 0-1 part of sodium carbonate. The preparation method comprises the following steps: fully mixing the raw materials, adding the mixture to a twin screw extruder, extruding and granulating so as to obtain the heat-conducting POM material. The heat-conducting POM material prepared by the method has good compatibility, mechanical property and heat-conducting property.

The invention discloses a radiating device of an LED lamp. The radiating device is characterized by comprising an upper radiator and a lower radiator, wherein the upper radiator comprises a base, and a boss upwards projected from the center of the base; the boss is perpendicular to the base, and is provided with a horizontal light source surface at the top; the size of the light source surface is equivalent to the size of an LED light source fixed thereon; the light source surface and the LED light source have an excellent heat conducting channel; the cross section radius of the boss is kept consistent from the light source surface to the base; the lower radiator is matched below the base of the upper radiator; the lower radiator and the base have a heat conducting channel; a light emitting plane of the LED light source is covered with a diffusion lens; and the diffusion lens diffuses light rays of the LED light source to a whole space. The radiating device of the LED lamp keeps excellent heat conductivity of stamped aluminum alloys, is higher in precision, prevents the secondary processing, saves the cost, and is fast in processing time.

The invention provides an earth surface shallow geothermal energy collecting and utilizing device which comprises a geothermal energy pipe. A box body is arranged above the geothermal energy pipe, a power generation device is arranged below the box body, a conveying device is arranged in the geothermal energy pipe, a containing box is fixedly installed in the box body, the pushing device is arranged in the containing box, the heat conduction plate is arranged in the containing box, and the rectangular box is fixedly installed at the top of the box body. According to the earth surface shallow geothermal energy collection and utilization device, through cooperative use of the power generation device and the conveying device, collection of geothermal energy is facilitated, output of electric power can be reduced during collection, and reduction of collection cost is facilitated; and through cooperative use of the pushing device and a heat conducting plate, waste heat generated by hot water can be collected conveniently, secondary treatment of the waste heat can be facilitated, rising of the atmospheric temperature caused by heat emission can be reduced, and through cooperative use of a storage device and a control device, the waste heat can be used and collected conveniently.

The invention discloses a heat dissipating device for an industrial mining lamp. The device comprises an aluminum substrate, a heat conducting plate, a heat dissipating aluminum profile and a pure copper pipe; the heat conducting plate is mounted on the upper end surface of the heat dissipating aluminum profile; the pure copper pipe is embedded in the circle center position of the heat conducting plate, and is communicated with a heat dissipating channel on the heat dissipating aluminum profile; a conflict projection is arranged on the heat conducting plate, and is fixed on the heat conducting plate; the contacted surface of the pure copper pipe with the aluminum substrate and the contacted surface of the heat conducting plate with the aluminum substrate are on the same one horizontal plane; a gap between the pure copper pipe and the heat conducting plate is filled by heat conducting silicone grease with a heat conducting coefficient of 4.0; and silicone grease with a heat conducting coefficient of 4.0 is filled between the aluminum substrate and the pure copper pipe. Heat of an LED light source is quickly leaded out through the pure copper pipe; the LED industrial mining lamp is smaller in size, higher in light effect, low in light attenuation and stable in performance; and the life of the industrial mining lamp is prolonged.

The invention discloses an LED bulb. The LED bulb comprises an LED light source, a transparent lampshade and a lamp body. The LED light source is fixedly arranged on the lamp body. The transparent lampshade covers the upper portion of the lamp body. An exhaust hole is formed in the transparent lampshade. A light-emitting post comprises a heat conducting post. The heat conducting post is fixedly arranged on the lamp body. The heat conducting post is provided with a first through hole penetrating through the heat conducting post, and second through holes communicated with the first through hole. The LED bulb further comprises a light reflecting cover. The light reflecting cover comprises a barrel. The barrel is arranged in an inner cavity of the transparent lampshade. A plurality of third through holes are formed in the top end of the barrel and in the radial direction of the barrel. The lamp body comprises a lamp holder and a connecting member used for connecting the lamp holder and the LED light source. The connecting member is in an annular shape. Grilling holes surrounding the connecting member are formed in the radial surface of the connecting member. A radiating channel penetrating the outside and the inside of the LED bulb is formed by the grilling holes, an inner cavity of the connecting member, the first through hole, the second through holes, the third through holes, the inner cavity of the transparent lampshade and the exhaust hole. The LED bulb has the advantage of being efficient in radiating.