38results about How to "Uniform surface temperature distribution" patented technology

The invention is applicable to a liquid crystal display, providing an ITO heater and a heating method of the liquid crystal display. The ITO heater comprises an ITO glass substrate which is provided with two opposite long edges and two opposite short edges, wherein, two opposite edges are electrically connected with connecting terminals along the direction from one edge to the other edge; and the ITO glass substrate is divided into a plurality of areas, each area is etched with an ITO pattern, and the ITO area of the etched edge part is larger than that of the central part. As for the ITO heater of the invention, the closer to the edge area, the stronger the resistance is; therefore, the heat output of areas closer to the edge is more than that of the central part, while heat of the edge is discharged fast, therefore, offset effect is achieved; the ITO heater can be used for the heating of liquid crystal display modules, and the temperature is evenly distributed on the surface of the ITO heater.

This invention discloses a common use device for electricity and heat of a solar cell including a liquid container with heat collection working fluid, in which, hot tubes are set on the side walls of the container and set with phase change heat- carry working fluid, a solar cell is connected with the tubes in the container fixedly, an inlet is set at the bottom of the container and an outlet is set at the top of the container, the bottom face is transmissive, heat preservation materials are set at outside of the top and outside of the side wall of the container. This invention can carry away solar heat not changed to electricity quickly by dipping a solar cell in a heat-collection working fluid and connecting to the hot tubes.

The invention discloses a die with a heating device. Main points of the invention are as follows: an insulating layer and a conducting layer which are electrically isolated are arranged on an upper die or a lower die or simultaneously arranged on the upper die and the lower die, the surface of the conducting layer is an interface between the die and a material, current is directly switched on the conducting layer so as to allow the current to crowd on the surface of the conducting layer of the upper die, or the lower die, or the upper die, the lower die and the like, and the surface of the conducting layer is preheated to an operating temperature from room temperature. Thus, the die provided by the invention may be only composed of the upper die, the lower die, a current conducting plate and a conductor wire and electrical insulation is carried out on the conducting layer and the insulating layer of the upper die, or the lower die, or the upper die and the lower die so as to achieve effects of the prior art, thereby realizing the purpose of cost reduction; moreover, since current only crowds on the surface of the conducting layer of the upper die, or the lower die, or the upper die and the lower die, uniform distribution of surface temperature of the die can be realized regardless of changing of the shape of the surface of the conducting layer.

The present invention relates to a heat exchanger, in which inlet and outlet side heat exchange parts are communicated with each other and have the same refrigerant flowing direction by communicating pairs of cups with each other which are located at a predetermined area of the center of the heat exchanger, thereby being easily reduced in size, providing uniform surface temperature distribution and improving heat exchange efficiency by reducing the preponderance and the pressure drop rate of refrigerant and inlet and outlet pipes being easily arranged forward.

An energy-saving kang with double flow channels belongs to the technical fields of the utilization of solar energy and biomass energy and the building energy conservation. The energy-saving kang with double flow channels contains not only a stove, a kang plate, a flue baffle plate, a flue gas inlet, a flue gas circulation channel, a flue gas outlet, a chimney and other parts of the traditional kang, but also a solar air heat collecting system. In the energy-saving kang, the folded metal plate on the lower surface of the upper kang plate is utilized to increase the heat-transfer intensity of the air and the kang plate and the uniformity of the temperature distribution of the kang surface; the baffle plate is used to effectively separate the air and the flue gas circulation channel; and the solar energy and the heat of the flue gas can be utilized simultaneously, and the solar heat collecting device can not be damaged. All the parts in the energy-saving kang are prepared from common materials and by common preparation technology, thus the energy-saving kang has the advantages of simple production technology, low production cost and the like. The energy-saving kang is mainly used in the single building of a village in Northern China, can solve the indoor heating problem in winter and can reduce the coal consumption while lowering the environment pollution.

A soldering method for soldering an electronic part on a substrate by reflow soldering is disclosed that includes the steps of applying a solder paste on the substrate; mounting the electronic part on the substrate by using the solder paste; disposing a heat capacity enhancing member on the electronic part, the heat capacity enhancing member including a gel-like material able to enhance the heat capacity of the electronic part; and soldering the electronic part onto the substrate by reflow soldering with the heat capacity enhancing member being applied thereon.

The invention belongs to the technical field of floor manufacturing equipment, and particularly relates to a reinforced composite floor hot press. The reinforced composite floor hot press comprises abase, an oil storage tank is fixedly installed on the base, and through holes are formed in the two end surfaces of the oil storage tank. A pressure-bearing platform is fixedly installed on the base,and a guiding rail is arranged on the pressure-bearing platform. A first bracket and a second bracket are fixedly arranged on the base, a limiting rod and a lead screw are connected between the firstbracket and the second bracket, and an installation plate parallel to the top surface of the pressure-bearing platform is matched with the lead screw in a threaded mode. A first air cylinder is installed on the bottom surface of the installation plate, the end part of a piston rod of the air cylinder is clamped to the two ends of a hot oil pipe, and a pressing roller is rotatably matched with theouter side wall of the hot oil pipe. The two ends of the hot oil pipe are fixedly connected with a sealing plate mutually matched with the end surface, and an opening with the same size as the longitudinal section of the hot oil pipe is formed in the middle part of the sealing plate. According to the reinforced composite floor hot press, a hot pressing roller is adopted to replace a traditional hot pressing plate to conduct the hot pressing on the reinforced composite floor, and a better hot pressing effect is achieved.

The invention relates to a power battery. The power battery comprises a shell, a battery pack, a first graphene heating sheet surrounding the battery pack and a second graphene heating sheet arrangedin the battery pack, and after the first graphene heating sheet is electrified, the battery pack can be heated from outside to inside. Moreover, the first graphene heating sheet is encircled to form aring shape and coats the outer side of the battery pack, so that heat can be diffused from the periphery of the battery pack to the inside of the battery pack. The second graphene heating sheet is clamped between the adjacent battery cells and can heat the battery pack from inside to outside after being electrified. Therefore, when the power battery starts to heat, heat can be transferred from inside to outside and from outside to inside at the same time. Moreover, the first graphene heating sheet and the second graphene heating sheet heat on the whole surface, the heating area is large, andthe surface temperature distribution is balanced. Therefore, the power battery can be used for uniformly heating the internal battery cell. In addition, the invention further provides an electric automobile.

The invention discloses an enhanced heat abstractor employing pulsating flow and a foam metal plate. The enhanced heat abstractor comprises a pulsating pump, a heat sink chamber, an accumulated liquid cavity and a cooler, wherein the pulsating pump conveys a cooling liquid into the accumulated liquid cavity through a liquid inflow pipe; the accumulated liquid cavity sprays the cooling liquid into the heat sink chamber; the heat sink chamber conveys the liquid which is subjected to heat transfer into the cooler to cool through a liquid discharge pipe; the pulsating pump sucks in the cooled cooling liquid from the cooler through a connecting pipe; the heat sink chamber comprises the foam metal plate, a heat transfer support plate and a cover board; the heat transfer support plate is connected with a high-heating flux device; the foam metal plate is fixedly connected with the heat transfer support plate; and a dispenser is vertically connected with the top of the cover board. The pulsating flow of the enhanced heat abstractor is matched with a dual-layer foam metal structure, so that transverse and longitudinal disturbance and mixing of working mediums can be increased; a thermal boundary layer is continuously recombined; and meanwhile, cavitation and vortex formation are caused by pressure change in the disturbance process, therefore, the heat transfer efficiency can be greatly improved.

The invention discloses a method for preparing a thermal barrier coating on the surface of an engine turbine blade. The method comprises the following steps: arranging a winding and plating shielding object at a position with a certain distance on the surface of the turbine blade, so that plasma jet flow firstly bypasses the winding and plating shielding object and then reaches the surface of the turbine blade when being sprayed on the surface of the turbine blade; and a PS-PVD process is used for spraying the surface of the turbine blade.

The invention relates to a modular electric heating simulation heat source for ETG. The modular electric heating simulation heat source comprises at least two stacked modules. The module comprises a module box and an electric heating unit arranged in the module box. The electric heating unit is wrapped with a heat insulation layer. The electric heating unit comprises a cladding, a coil holding threaded pipe and a resistance wire spiral coil. The coil holding threaded pipe is mounted in the cladding. The resistance wire spiral coil is installed in the coil maintaining threaded pipe, and the coil maintaining threaded pipe is provided with internal threads matched with the resistance wire spiral coil. The beneficial effects of the heat souorce are as follows: the spiral coil simulates the radioactive source for heating, it is guaranteed that the heat flow path of the electric heating unit and the heat flow path of the radioactive source fuel pellet single body are basically the same, surface temperature distribution is basically consistent, overall temperature distribution is also basically consistent, a radioactive source is replaced to test and verify the performance of the generator, early-stage research cost is greatly reduced, and the research progress is accelerated.

The invention discloses a turbine blade with a leading-edge concaved cavity. The turbine blade with the leading-edge concaved cavity is suitable for gas turbine engines and comprises a blade base body, the leading-edge concaved cavity and a gas film hole. The turbine blade with the leading-edge concaved cavity is characterized in that a stationary point line is used as a center line by the leading edge of the turbine blade, the molded surface of the leading edge of the blade serves as a reference molded surface, and the concaved cavity with the depth of 1 mm to 2 mm is cut inwards. With the structure of the novel blade, the temperature distribution conditions of the leading edge of the turbine blade can be improved, and the cooling effect can be improved.

The invention discloses a wafer etching method. The wafer etching method comprises the steps: obtaining a to-be-processed silicon tray; manufacturing a positioning groove for fixing a wafer in the upper surface of the to-be-processed silicon tray; manufacturing a liquid storage annular groove used for preventing the heat conduction medium from overflowing in the bottom of the positioning groove, and obtaining a silicon tray, wherein the size of the liquid storage annular groove is smaller than that of the positioning groove; putting a heat-conducting medium into the positioning groove positioned in the liquid storage annular groove area; putting the wafer into the positioning groove; and placing the silicon tray containing the wafer in dry etching equipment to etch the wafer to obtain thewafer with an etching pattern. The silicon tray with the positioning groove and the liquid storage annular groove is manufactured; the silicon tray is low in cost; the liquid storage annular groove isused for preventing the heat-conducting medium from overflowing, so that generation of impurities caused by reaction with the etching gas does not occur; the wafer is contained in the positioning groove, so that the wafer can be prevented from sliding; the wafer does not need to be pressed, so that the fragment rate is reduced; and the area where the wafer is located is not affected, and etchinguniformity is guaranteed.

The present invention relates to a heat exchanger, in which inlet and outlet side heat exchange parts are communicated with each other and have the same refrigerant flowing direction by communicating pairs of cups with each other which are located at a predetermined area of the center of the heat exchanger, thereby being easily reduced in size, providing uniform surface temperature distribution and improving heat exchange efficiency by reducing the preponderance and the pressure drop rate of refrigerant and inlet and outlet pipes being easily arranged forward.

The invention provides a 2U-shaped radiator. The 2U-shaped radiator comprises a phase change restraining, heat transfer and radiating fin, a first fin and a second fin, wherein the phase change restraining, heat transfer and radiating fin comprises a first section, a second section, a third section, a fourth section and a fifth section which are sequentially connected, the first section, the second section and the third section form a first U-shaped part, the third section, the fourth section and the fifth section form a second U-shaped part, the opening directions of the first U-shaped part and the second U-shaped part are opposite, and the fifth section is located in the first U-shaped part; and the first fin is located between the first section and the fifth section, and the second fin is located between the third section and the fifth section. The 2U-shaped radiator has the advantages of being low in cost, high in heat dissipation capacity, uniform in heat dissipation, small in temperature rise and the like, and has wide market prospects.

The invention belongs to the field of biomass fast pyrolysis liquefaction, particularly relates to a low energy consumption biomass liquefying device, and solves the problems of overhigh energy consumption and relatively low output proportion in the biomass pyrolysis liquefaction process. The device mainly comprises a feed bin heating jacket, a carbon powder burner, a multistage air preheater, a biomass pyrolysis reactor, a plate-type nitrogen preheater, a gas-solid cyclone separator, a fast condensing system, a metal filter and the like. According to the low energy consumption biomass liquefying device disclosed by the invention, the heating rate of biomass is greatly improved by use of rotating centrifugal force and a honeycomb channel; due to gas-liquid bubbling mixing, quick condensingis realized and the generation proportion of biomass oil is increased. Meanwhile, heat required by pyrolysis is mainly provided by burning biomass carbon particles, so that the self sufficiency of energy is realized; in addition, the heat of flue gas is recovered by multiple stages, so that heat loss of exhausted smoke is reduced, and heat efficiency of the whole set of device is improved. By adopting the low energy consumption biomass liquefying device disclosed by the invention, the oil yield of biomass fast pyrolysis liquefaction can be improved to 65 percent or above.

The invention provides a method and a device for improving the critical dimension uniformity of a wafer. The method comprises the following steps: acquiring first temperature distribution on the surface of a wafer in a drying process after coating; predicting second temperature distribution in the post-exposure drying process according to the first temperature distribution, wherein drying equipment adopted in the post-coating drying process and drying equipment adopted in the post-exposure drying process are manufactured by adopting the same process; and compensating exposure energy in an exposure process according to the second temperature distribution, and exposing the wafer by adopting the compensated exposure energy so as to improve the critical dimension uniformity of the wafer. The drying equipment adopted in the post-coating drying process and the drying equipment adopted in the post-exposure drying process are manufactured by adopting the same process, so that the second temperature distribution can be predicted by adopting the first temperature distribution, and the exposure energy in the exposure process is compensated according to the second temperature distribution; and the critical dimension uniformity of the wafer is improved.