106results about How to "Improve heat uniformity" patented technology

An anode-supported tubular fuel cell stack includes interconnect structures that are oxidation resistant at high temperature, flexible to accommodate thermal expansion stress and to provide strong electrical contact, have low electrical resistance, and are inexpensive and light weight. The interconnect structures may be formed out of metal sheet, which provide improved heat homogeneity throughout the fuel cell stack because of the high thermal conductivity of the metal. The interconnect structures are further shaped to provide resilience or spring-like features to allow movement between the tubular cells. Thus good electrical contact, thermal stress release, and shock absorption are simultaneously achieved.

A microwave oven and method for heating a load using microwaves are provided. The microwave oven comprises a cavity adapted to receive a load. The cavity is designed to support at least two predefined mode fields. For each predefined mode field, a resonance frequency in the cavity is known. Further, the microwave oven comprises a frequency-controllable microwave source for feeding microwaves into the cavity via at least one feeding port. The method comprises the steps of measuring a signal reflected from the cavity as a function of the operating frequency of the microwave source and identifying resonance frequencies in the cavity based on the measured signal. Further, the method comprises the steps of selecting, for the predefined modes, at least two of the identified resonance frequencies based on the known resonance frequencies and switching the operating frequency of the microwave source using the selected frequencies. The present invention is advantageous in that it enables uniform heating of the load in the cavity.

The inventive structural support is made of the braided wire or is made of sheet or block material to form a sheet-shaped concave-convex structure with several throughholes by punching, etching, electroplating or electroforming processes. The structural support is combined in the cavity of liquid-vapour two phases cooling assembly and is fit with a capillary structural layer.

The invention provides a preparation method of a graphene heat conducting silica gel pad. The preparation method comprises the following steps: growing a single-layer graphene thin film on the surface of a metal foil piece by adopting a chemical vapour deposition method, so that a graphene thin film/metal foil piece is obtained; preparing coupling agent modified heat conducting filler, mixing the coupling agent modified heat conducting filler, vinyl silicone oil, hydrogen-containing silicone oil, an inhibitor and a catalyst to form mixed materials, carrying out rolling treatment, and then tabletting under heating condition, so that a heat conducting silica gel pad is obtained; fitting the graphene surface of the graphene thin film/metal foil piece with a heat release adhesive tape, carrying out surface polishing on a metal foil piece surface of the graphene thin film/metal foil piece, and then putting in etching liquor until the metal foil piece is completely dissolved, so that a graphene thin film/heat release adhesive tape is obtained; and rinsing the graphene thin film/heat release adhesive tape with deionized water, drying, then fitting the surface, pasted with the graphene thin film, of the graphene thin film/heat release adhesive tape, and then removing the heat release adhesive tape.

The object of the present invention is to provide a ceramic substrate that can provide a substantially uniform temperature distribution to a surface of the ceramic substrate where a semiconductor wafer is treated. A ceramic substrate for a semiconductor-producing/examining device according to the present invention is a ceramic substrate having a conductor formed on a surface of the ceramic substrate or inside the ceramic substrate, wherein said substrate is containing oxygen and having a disc form, the diameter thereof exceeding 250 mm and a thickness thereof being 25 mm or less.

A composite material that increases in temperature upon exposure to electromagnetic radiation comprising single crystal silicon carbide whiskers and fibrils in a matrix material. Also, heat-generating objects comprising the composite material, and a method of generating heat.

The invention relates to a process for producing a superfine high-purity quartz glass pipe for a high-temperature sensor, which is characterized by comprising the following steps of: finely selecting quartz blocks as raw materials, wherein the particle size of the quartz blocks is 20-30 mm, and the content of SiO2 is above 99%; sequentially carrying out soaking in hydrochloric acid, roasting, water quenching, mechanical pulverization, iron removal, soaking in mixed acid, high-temperature stirring and washing and high-temperature chloridization on the raw materials to obtain high-purity quartz sand; then throwing the high-purity quartz sand in a quartz furnace for smelting, pulling into a quartz glass pipe, and then scouring, cutting, trimming, ultrasonic cleaning and dehydroxylating so that a finished product is obtained. The quartz glass pipe produced and prepared by the process has the superfine and ultrathin features, has the characteristics of high-temperature resistance, molten steel and glass liquid-washing resistance, corrosive resistance, high heat transfer speed, good soaking performance, large strength, long service life, no bursting under shock heating and cooling condition, strong process operability, scale production and the like, and completely accords with the requirements of various performance indexes of the quartz glass pipe used as an outer protective pipe of the high-temperature sensor.

Provided is a rack for firing which holds a plurality of flat board-like setters at multiple levels in the perpendicular direction by means of a setter holding means, and fires electronic ceramic elements at multiple levels. The setter holding means is composed of a material composed of Si-SiC containing 0.01-30 % of Si or recrystallized SiC or Si3N4-SiC, and the setter holding means holds each of the flat board-like setters with 70-100 % of the outer circumferential side surface thereof exposed. Consequently, the rack has excellent energy efficiency, mass-production efficiency, and uniform heating characteristics at each of the multiple levels in the multiple-level firing.

The invention discloses a partial cooling battery module suitable for a softly-packaged lithium ion battery. The partial cooling battery module comprises a shell and multiple single batteries, wherein the multiple single batteries are arranged in the shell in a laminated manner; the partial cooling battery module also comprises a tab cooling apparatus, packing belts and a bottom cooling apparatus; and the sealing edges of the single batteries are tightened in a tab through slot of the tab cooling apparatus and a cooling through slot of the bottom cooling apparatus through the packing belts. According to the partial cooling battery module, more heat generated by the tabs can be exported, so that the battery tabs can be effectively cooled, and the soaking performance and the radiating performance of the battery pack can be improved; and in addition, mutual extrusion of the batteries caused by expansion due to heat generated in operation can be avoided, so that the safety of the battery can be improved.

The invention relates to a magnetic fluid flat heat pipe soaking machine that can be used as the soaking machine in an electronic apparatus cooling device. The invention aims to solve deficiency that a capillary core in the flat heat pipe soaking machine is hard to place and the capillary force is not enough. The whole magnetic fluid flat heat pipe is welded by an evaporate face flat (2) and a condensate flat (3). The flat heat cavity is provided with no any capillary structure. After extracting vacuum for the flat heat pipe, the flat heat pipe is filled with magnetic fluid as working substance. A magnet (5) is placed adjacent to an electronic apparatus (1) on an outer side of the evaporate face flat. The flat heat pipe can save design of the capillary liquid absorbing core. Placing additionally magnetic filed not only intensifies the working substance to boil, but also accelerates the working substance to flow back, which enables the magnetic fluid flat heat pipe to work under anti-gravity condition.

The invention discloses a lithium ion battery pack tab liquid cooling based on liquid cooling. The liquid cooling device comprises a closed liquid cooling pipeline, and heat conductive cooling liquid arranged in the liquid cooling pipeline. The liquid cooling pipeline comprises metal pipelines and insulation pipelines which are arranged alternately. The metal pipelines fit the tab collector sheets of the lithium ion battery pack and are used for conducting the heat of lithium ion battery pack tabs. The insulation pipelines are connected with the metal pipelines. The liquid cooling pipeline also comprises a liquid inlet and a liquid outlet which are closeable and openable and are used for importing and exporting the heat conductive cooling liquid. The heat conductive cooling liquid is insulation liquid with a heat conductive cooling function. According to the device, the tabs at different locations of the lithium ion battery pack are connected through a heat conductive loop, and the heat conductive cooling liquid is injected into the loop. The temperature difference problem of the battery tabs at different locations in the charge/discharge process of the battery pack is solved. The device has good soaking effect, is simple in structure, is easy to disassemble and expand, and is applicable to lithium ion batteries of different combinations.

The invention discloses a high-enthalpy phase-change silicone pad and a preparation method thereof. The silicone pad includes, by mass, vinyl silicone oil 10-25%, paraffin phase-change microcapsules 50-85%, a crosslinker 0.5-5%, a flame retardant 5-15%, a binder 0.5-4%, a diluent 2-6%, a platinum catalyst 0.01-0.04%, and an inhibitor 0.005-0.02%; all the components add to 100% by mass. The silicone pad has a wide phase change range of 25-70 DEG C, is high in phase-change enthalpy of 100-140 J/g, has excellent flexibility and adhesion force, and certain flame-retarding level and insulation effect. The phase-change material has great sealability, can resist cold and hot impact, and is long in service life.

The invention discloses a blast deflector. The blast deflector comprises a thermal diffusion layer, a structure layer and a cooling layer, wherein the thermal diffusion layer comprises one or more thermal diffusion modules; each thermal diffusion module comprises a closed circuit pulsating heat pipe and solid-liquid phase transformation materials; the structure layer adopts a lattice sandwich structure, and comprises an upper panel, a lower panel, basic cells and solid-liquid phase transformation materials; the cooling layer comprises a seawater cooling plate and a seawater transporting pump;the seawater cooling plate comprises a water inlet, a water outlet, a water diversion tank, a water collecting tank and a honeycomb type fractal flow channel network; the closed circuit pulsating heatpipes are arranged on the thermal diffusion layer in a module manner; when the center of the surface of the blast deflector is impacted by fuel gas, the characteristics that when any part of the closed circuit pulsating heat pipe is heated, the heat transfer characteristics are hardly changed, the thermal responding speed is high and the heat transfer capacity is excellent are utilized, the solid-liquid phase transformation materials stuffed in the space of a non-closed circuit pulsating heat pipe on the thermal diffusion layer and a non-basic-cell space on the structure layer are used for absorbing and storing massive melting heat in a phase transformation manner, so that heat quantity on the thermal diffusion layer is rapidly diffused, and good soaking performance is realized.

The invention relates to a method for preparing a ZrN-aluminum nitride2O3-ZrO2 multiphase ceramic material by aluminum nitride-zirconium dioxide reactive sintering, belonging to the field of high-temperature ceramic materials. The multiphase material is prepared from the following raw materials in percentage by mass: 5-40% of aluminum nitride fine powder, 60-95% of monoclinic zirconium dioxide fine powder, and 1-1.5% of sintering accelerator (CaF2 or ZrB2 or MoSi2) fine powder (additional). The method comprises the following steps: dryly mixing the raw materials, adding anhydrous ethanol, and wetly mixing; removing ethanol from the slurry, adding a rosin ethanol solution, stirring, and standing in a sealed environment to obtain a blank; and molding the blank, drying, and keeping the temperature at 1400 DEG C for 6-8 hours in a dynamic nitrogen atmosphere to obtain the ZrN-Al2O3-ZrO2 multiphase ceramic material. The multiphase material has the advantages of high soaking capacity, small thermal expansion coefficient and favorable thermal shock resistance, is assisted by a microcrack toughening mechanism, and can provide a novel high-temperature ceramic material for the fields of steel and non-ferrous metallurgy, construction materials, electronics and the like.

The invention discloses a solar energy floor heating system based on a heat conduction graphite film. The solar energy floor heating system based on the heat conduction graphite film comprises a solar thermal collector, a water storage tank with a thermal insulation layer, a concurrent heating water tank, a temperature controller, an indoor laying system and a dual filter, wherein the solar thermal collector comprises a heat absorption coil pipe, a heat absorption piece, a heat insulation layer, a light transmitting cover and a box, the solar thermal collector is connected with the water storage tank with the thermal insulation layer, the indoor laying system comprises a water pipe, the heat conduction graphite film, a floor, cement mortar and a thermal insulation board, the dual filter is arranged on a backflow segment between the indoor laying system and the water storage tank with the thermal insulation layer, and the dual filter comprises an inverted cone hole, a T-shaped pipe, a filter screen and a filtration cotton layer. The solar energy floor heating system based on the heat conduction graphite film uses solar energy as a heat source, saves energy and protects environment, can be used in both villages and cities, uses the heat conduction graphite film as a soaking layer, is simple and easy to implement, and good in soaking effect, reduces floor deformation rate, and thereby prolongs service life of a floor. The purpose of filtering water at low cost is achieved by using the solar energy floor heating system based on the heat conduction graphite film, which is simple in structure.

The invention relates to a carbon fiber heating ground mattress which is characterized by comprising an aluminum foil glass fabric layer (1), carbon fiber heating wires (2), an aluminum foil glass fabric adhesive tape layer (3) and two inner conductive wires (4), the aluminum foil glass fabric layer (1), the two inner conductive wires (4) and the aluminum foil glass fabric adhesive tape layer (3) are arranged from top to bottom in sequence, a single carbon fiber heating wire (2) or multiple carbon fiber heating wires (2) connected in parallel are connected between the two inner conductive wires (4), and the outer ends of the inner conductive wires (4) stretch out of the aluminum foil glass fabric layer (1) and the aluminum foil glass fabric adhesive tape layer (3). The carbon fiber heating ground mattress has the advantages of being good in even heating performance, good in radiation protection performance, high-temperature resistant, long in service life, dual-purpose in a dry paving mode and a wet paving mode, and especially convenient to mount and pave.

The invention relates to a battery module heating device and a battery module. The heating device comprises two connecting plates and heating elements. The two connecting plates are arranged oppositeto each other. A mounting gap is reserved between the two connecting plates. The heating elements are arranged in the mounting gap and are fixedly connected with the two connecting plates respectively. The heating device of the invention, A heating element is arranged between the two connecting plates. When the heating device is used in the battery module, the two connecting plates can be heated by the heating element respectively, and the cell contacting with the connecting plate can be heated, so that the heat energy generated by the heating element can be absorbed by the cell maximally, andthe utilization rate of energy can be improved.

The invention relates to a method for preparing a ZrN-Al2O3-ZrO2 multiphase ceramic material by Al-ZrO2-N2 reactive sintering, belonging to the field of high-temperature ceramic materials. The multiphase material is prepared from the following raw materials in percentage by mass: 5-30% of metal aluminum fine powder, 70-95% of monoclinic zirconium dioxide fine powder, and 1-1.5% of sintering accelerator (CaF2 or ZrB2 or MoSi2) fine powder (additional). The method comprises the following steps: dryly mixing the raw materials, adding anhydrous ethanol, and wetly mixing; removing ethanol from the slurry, adding a rosin ethanol solution, stirring, and standing in a sealed environment to obtain a blank; and molding the blank, drying, and keeping the temperature at 1400 DEG C for 6-8 hours in a dynamic nitrogen atmosphere to obtain the ZrN-Al2O3-ZrO2 multiphase ceramic material. The multiphase material has the advantages of high soaking capacity, small thermal expansion coefficient and favorable thermal shock resistance, and can provide a novel high-temperature ceramic material for the fields of steel and non-ferrous metallurgy, construction materials, electronics and the like.

The invention provides an artificial graphite flake and a manufacturing method thereof. The artificial graphite flake is prepared from a PI membrane through a stacking step, a first heating step and a second heating step; and the artificial graphite flake is improved in lubricity, hardness, balanced heating in thermal conduction and flatness. Moreover, a through hole perforation step is further carried out so as to form a porous structure on the artificial graphite flake, which enables the diffusion area, air permeability, production yield and flatness of the artificial graphite flake to be improved. The invention also relates to a graphite substrate stack structure containing the artificial graphite flake. The graphite substrate stack structure comprises the prepared artificial graphite flake, a substrate, at least one conducting layer and at least one insulating layer and is applicable to thermoelectric separation electronics.