42results about How to "Reduce temperature non-uniformity" patented technology

Embodiments of the invention generally contemplate an apparatus and method for monitoring and controlling the temperature of a substrate during processing. One embodiment of the apparatus and method takes advantage of an infrared camera to obtain the temperature profile of multiple regions or the entire surface of the substrate and a system controller to calculate and coordinate in real time an optimized strategy for reducing any possible temperature non-uniformity found on the substrate during processing.

A lift and operating angle varying mechanism is arranged to vary an intake valve operation angle and an intake valve lift of the engine continuously by rotating a control shaft with an actuator disposed at an end of the control shaft which is rotatably supported by a plurality of bearings. A lubricating oil is supplied to the bearings so as to reduce nonuniformity in temperature distribution of the control shaft in the longitudinal direction.

The invention discloses a heating device for a Hopkinson pressure bar test, which comprises a movable supporting platform, a tubular heating furnace and an electric control box. The tubular heating furnace is mounted on a sliding plate of the movable supporting platform. Two groups of sliding rails and a plurality of fixed sliding beads are arranged on the upper surface of the sliding plate. Two alundum tubes are symmetrically sleeved at two ends of a heat-resistant steel tube. Heat-resistant bricks are respectively built around the external surfaces of the joints of the two alundum tubes and the heat-resistant steel tube. The heat-resistant bricks are provided with through holes for mounting silicon carbide rods. Insulating linings are sleeved on the external surfaces of a hearth and the heat-resistant bricks. Positions where inner cavities of the insulating linings correspond to the through holes on the heat-resistant bricks are all provided with mounting holes of the silicon carbide rods. Aluminum silicate fibrous carpets package the external surfaces of the insulating linings. A furnace shell is packaged on the external surfaces of the aluminum silicate fibrous carpets and the insulating linings. A base is fixed on the furnace shell. Two heat-insulating covers are respectively mounted in the hearth from hearths at two ends, and end cover bolts are fixed at two ends of the furnace shell. In the invention, the tubular heating furnace can move in the up-and-down direction, the leftward-rightward direction and the frontward-backward direction of the platform, and the heating device has the characteristics of good heat-insulating performance and convenience in repair.

The invention discloses a device for evaluating short-period snow melting performances of a salt-applied snow-self melting road surface. The device provided by the invention comprises an ambient temperature box, an experimental unit, a loading unit and a test unit, wherein the experimental unit, the loading unit and the test unit are arranged in the ambient temperature box. The test unit comprises test pieces, ice and snow bestrewed on the test pieces, a thermal-insulating and water-resisting material arranged each adjacent two of the test pieces, elastic shock pads arranged on the tops of the thermal-insulating and water-resisting materials, porous separator plates arranged at the bottoms of the test pieces, and waterproof material wrapping the test pieces. The loading unit comprises a rolling wheel which can carry out straight reciprocating motion, and a loading device for lifting the rolling wheel, wherein the loading device is installed in a linear-type guide rail and is connected to a radially movable turn plate by a connecting rod and the radially movable turn plate is driven by a motor. The test unit comprises drainage devices, and measuring cylinders which are utilized for holding and measuring solutions and are arranged under the drainage devices, wherein a density measuring instrument and a laser receiving and transmitting device are arranged in each one of the measuring cylinders. The device provided by the invention can be utilized for simulation of a test on short-period snow melting effects of a salt-applied snow-self melting road surface under the action of vehicle rolling, and is mainly utilized for evaluation of short-period snow melting performances of a salt-applied snow-self melting road surface.

The invention provides an electron beam selective preheating scanning method. The electron beam selective preheating scanning method comprises the steps that S101, a base plate is divided into a plurality of grid areas; S103, a three-dimensional CAD model of a part is subjected to layered slicing so as to obtain a contour of each layer, and grids where the contours of all the layers are located and grids contained in the contours of all the layers are selected to serve as preheating scanning grid areas which each comprise the first grid, the second grid...the N grid which are sequentiallyadjacent from the outer edges of the contours to the interiors; S105, the outer edge end points of the first grid, the second grid...the N grid in the preheating scanning grid area of the contourof the first layer are sequentially selected to serve as starting points, and electron beam preheating scanning is conducted in the X and Y directions simultaneously; and S107, according to the step 105, preheating scanning of the contour of the second layer is continued till preheating scanning of the contour of each layer is completed. According to the electron beam selective preheating scanningmethod, a powder bed can be preheated, temperature unevenness is reduced, warping deformation is reduced, and the material utilization rate can also be increased.

The invention relates to the technical field of batteries, in particular to a battery heating system. The system is integrated by two sub-systems, namely a heating system branch and a battery pack system branch, wherein the battery pack system branch comprises a battery pack and a plurality of relays; the battery pack comprises a plurality of battery modules and a heating sub-system; the heating sub-system comprises a plurality of heaters; each battery module is provided with at least one heater; and the heaters are arranged on the bottom surfaces or the side surfaces of the battery modules. The battery heating system can meet two requirements of driving heating and parking charging heating and can provide multi-mode experience for a user; the installation positions of the heaters are diverse; the battery heating system is simple and convenient to assemble, suitable for different applications, diverse in line connection mode and simple in line connection; and the temperature non-uniformity of the battery pack caused by heating can be effectively reduced.

The invention belongs to the technical field of heat transfer, and particularly relates to a composite liquid-cooling heat pipe radiator. The composite liquid-cooling heat pipe radiator comprises a flat plate heat pipe, wherein heat generated by a heating component is transferred to a bottom plate of the flat plate heat pipe, a top plate of the flat plate heat pipe is provided with protrusions perpendicular to the bottom plate of the flat plate heat pipe, the protrusions form a tubular heat pipe, and an inner cavity of the flat plate heat pipe is communicated with an inner cavity of the tubular heat pipe. The composite liquid-cooling heat pipe radiator further comprises a shell. The flat plate heat pipe and the tubular heat pipe are both located in the shell, and the bottom plate of the flat heat pipe is attached to the bottom surface of the shell in a sealed mode; an area defined by the outer surface of the flat plate heat pipe, the outer surface of the tubular heat pipe and the innerwall of the shell forms a cooling liquid channel; and the shell is provided with a cooling liquid inlet and a cooling liquid outlet. According to the radiator, the tubular heat pipe is combined withthe flat plate heat pipe, so that the radiator can be attached to a flat surface of the heating component and has a good radiating effect; and meanwhile, heat released by a refrigerant of a condensation section is taken away through liquid cooling, and compared with air convection heat dissipation, the heat exchange capacity of the composite heat pipe with the outside is improved.

An imaging device module includes an imaging device including a light incident plane on which light is incident, and a reverse face disposed on an opposite side of the light incident plane; and a thermal conductive sheet provided on the reverse face for dissipating heat generated from the imaging device.The thermal conductive sheet contains a plate-like boron nitride particle, and the thermal conductive sheet has a thermal conductivity in a direction perpendicular to the thickness direction of 4 W / m·K or more.

A lift and operating angle varying mechanism is arranged to vary an intake valve operation angle and an intake valve lift of the engine continuously by rotating a control shaft with an actuator disposed at an end of the control shaft which is rotatably supported by a plurality of bearings. A lubricating oil is supplied to the bearings so as to reduce nonuniformity in temperature distribution of the control shaft in the longitudinal direction.

The invention provides a novel solar thermal collector which comprises a heat-transfer area, heat-transfer mediums, a heat exchange area and heat exchange mediums. The novel solar thermal collector is characterized in that the heat-transfer area is positioned in the position of solar ray convergence and surrounds the heat exchange area, the flowing heat-transfer mediums are arranged in the heat-transfer area, the flowing heat exchange mediums are arranged in the heat exchange area, the boiling point of the heat-transfer mediums in the heat-transfer area is higher than the output temperature of the heat exchange mediums, sunlight energy transmits heat to the heat exchange mediums flowing through the heat exchange area through the heat-transfer area and the heat-transfer mediums in the heat-transfer area, after the absorption of the heat, the heat exchange mediums flow out of the solar thermal collector, and heat exchange is completed. The novel solar thermal collector is capable of being applied to a direct shift gearbox (DSG) system in the field of solar optothermal, safe and reliable in running and low in cost, and has a good application range.

The invention discloses a cylindrical core for manufacturing endless belt-shaped body, and a method for manufacturing endless belt-shaped body. The cylindrical core for manufacturing an endless belt-shaped body includes a cylindrical portion that includes a cylinder whose cylindrical shape is not maintainable without support when an outer surface thereof is orthogonal to the direction of gravitational force; and flange portions that are detachably mounted on both axial ends of the cylindrical portion, wherein the cylindrical core is used in a method for manufacturing an endless belt-shaped body, the method including applying a coating film forming resin solution onto an outer surface or an inner surface of the cylindrical portion in a state in which the flange portions are mounted on the cylindrical portion; drying a solvent of the coating film forming resin solution; and solidifying the coating film forming resin by heating in a state in which the flange portions are removed, to form the endless belt-shaped body.

The invention relates to the soil remediation industry in the field of environmental protection, in particular to a rotary kiln thermal desorption device capable of uniformly heating materials. The rotary kiln thermal desorption device is composed of fixed section kiln bodies, rotary section kiln bodies, combustor devices, supporting roller devices, kiln body heat preservation devices and sealingdevices; a rotary kiln for thermal desorption treatment is divided into a plurality of sections in the length direction according to the requirement of the treatment capacity, and the device is formedby combining the two structures, namely the rotary section kiln bodies and the fixed section kiln bodies in an alternated mode; the rotary section kiln bodies adopt the design structure of a conventional rotary kiln; one or more combustor devices are arranged on the fixed section kiln bodies and are used for heating the materials in the kiln; sealing between the rotary section kiln bodies and thefixed section kiln bodies adopts a double-sealing mode of sealing hoop plates and labyrinth heat preservation devices. According to the rotary kiln thermal desorption device, the nonuniformity of thetemperature among the materials in the kiln can be maximally reduced, and high-efficiency purification and remediation of contaminated soil can be completed efficiently.

The invention discloses a welding process for improving tensile-shear force and plasticity of a 2GPa steel welding joint. the welding process comprises the following specific steps of: polishing and cleaning a to-be-welded area of 2GPa steel, then placing the to-be-welded area between electrode tips of a resistance spot welding machine, and applying electrode pressure; performing critical welding pulse current I0 exploration test on the 2GPa steel by adopting the resistance spot welding machine; replacing the to-be-welded 2 GPa steel, applying the electrode pressure, preheating the to-be-welded area of a 2GPa steel plate by adopting preheating pulse current, and then cooling; welding the 2GPa steel plate by adopting welding pulse current, and then cooling; and tempering the area where welding spots are formed by adopting tempering pulse current. According to the welding process, the problem that the mechanical property of the welding joint is poor due to the fact that the 2GPa steel is high in carbon equivalent is solved, and technical support is provided for wide application of the 2GPa steel to a vehicle body.

The invention relates to a method of simultaneously improving uniformity of an air flow and temperature in an ion mobility spectrometry mobility zone. After drift air of the ion mobility spectrometryenters a mobility pipe, the air sequentially flows through one or more than one drift air passing hole in a circular metal plate whose temperature is almost the same as that in the mobility zone and enters the mobility zone, the drift air is subjected to diversion and preheating through one or more than one drift air passing hole in the metal plate, the distribution uniformity of the air flow andthe flow velocity in the mobility zone can be improved simultaneously, and the resolution is thus improved.

The invention discloses a cooling and spraying header for steel strips between rolling mill frames and a mounting structure thereof. The cooling and spraying header comprises a collecting pipe and multiple nozzle pipes; the collecting pipe is a section of axial symmetry curve represented by the central axis thereof and cut from a conical curve; the ratio of the length of the collecting pipe alongthe symmetric axis to the opening width is 0.05-0.25; and the multiple nozzle pipes are arranged along the projected side of the collecting pipe, and are inclined to one side of the plane of the central axis of the collecting pipe, so that an included angle alpha between the central axis in outlets of the nozzle pipes and the plane of the central axis of the collecting pipe is 15-60 degrees. During mounting, two sets of cooling and spraying headers are adopted, and are mounted at the upper parts and the lower parts of the steel strips; and the symmetric axes of the cooling and spraying headersand the middle lines of steel plates are on the same vertical surface. The problems of nonuniform distribution of the transverse temperature of the steel strips and quicker edge temperature drop canbe solved.

The invention provides a phase transformation heat exchange device. The device includes an inner tube, an outer tube, and a heat exchange medium; the space between the inner tube and the outer tube forms a whole or a part of a liquid phase region; a whole or a part of space inside the inner tube forms a vaporization region; the heat exchange medium with a relatively high pressure inside the liquid phase region enters the vaporization region with a relatively low pressure while being heated in vortex flow, and flows out of the device after being vapored, so as to complete heat exchange. The device can be applied to DSG systems of the solar energy photo-thermal field, and can also be applied to an input-output system of a heat storage system, or the field of boiler heating. It is achieved with safe operation, low cost, and good application range.

The invention provides a laser welding and testing integrated method for a condensation pipe. The method comprises the steps that a welded condensation pipe workpiece is assembled and is clamped and fixed, a U-shaped pipe is inflated with protective gas, and a laser machining head is moved to the joint position; a welding laser beam is output, a multi-freedom-degree mechanical arm is used for controlling the movement of the laser machining head, a focusing laser beam conducts one-circle scanning along the stand column pipe installing hole outline position, and an integral annular welding lineis formed; in the scanning process, the laser power is adjusted in real time, and a laser ring welding line is obtained; through an automatic lifting device, the condensation pipe workpiece obtained after welding is immersed in water, air tightness of the condensation pipe workpiece under the standard testing air pressure is tested, and when points of solder skips are found, welding is conducted again; or otherwise, hot air is adopted for blowing-dry after automatic elevating. According to the laser welding and testing integrated method for the condensation pipe, integrated and automatic laserwelding and testing and online welding defect repairing of the U-shaped condensation pipe are achieved, and the technical problems about automatic welding and online automatic welding line quality testing of the kind of components for a long term are solved.

The invention discloses a gas chromatographic column oven with low temperature overcharge. The gas chromatographic column oven comprises an over body and a chromatographic column fixedly arranged in the over body. A chromatographic column inlet and a chromatographic column outlet through which the two ends of the chromatographic column pass are formed in the sides of the over body. The middle partof the chromatographic column is wound into a shape like a coil pipe; and a platinum resistance wire having the surface processed by insulation winds around the surface of the chromatographic columnin the coil pipe shape tightly and spirally. Besides, a temperature measuring circuit is arranged in the over body; and the platinum resistance wire is connected with the temperature measuring circuitelectrically. The platinum resistance wire is used for heating the chromatographic column and also serves as a temperature sensor to measure the heating temperature. The gas chromatographic column oven has advantages of small size, low temperature overcharge, and prolonged service life.

The present invention relates to a susceptor having a coating layer configured to reduce the temperature deviation on a support surface thereof, and an MOCVD device comprising the same. A susceptor according to an embodiment of the present invention may have a support surface that contacts a substrate and supports the substrate and a side surface connected to the support surface, and may be configured such that the same is induction-heated by an induction coil, thereby heating the substrate while supporting the same. The susceptor may comprise: a base material made of a material that can be induction-heated in response to the induction coil; and a coating layer applied on a partial surface of the base material or on the entire surface thereof so as to form a part of the support surface orthe entire support surface, the coating layer having a magnetic property different from the magnetic property of the base material. The susceptor and the MOCVD device comprising the same, according tothe present invention, are advantageous in that, since temperature irregularity on the support surface that support the substrate is reduced, it is possible to grow a thin film having more uniform characteristics on the substrate, and a high yield can be obtained when an element is fabricated by using a substrate grown by a MOVDC process. In addition, the MOCVD device according to the present invention makes it possible to accurately measure the temperature on the support surface.

The invention discloses a temperature control debugging method and device for a power battery system. The system comprises a charging and discharging control module which is used for monitoring temperature and humidity information in a high and low temperature test box and information of a power battery system, sending a charging and discharging command to a charging and discharging test module according to the monitored information of the power battery system, and sending a temperature control command to a cooling liquid temperature control module; sending a temperature control command to the high and low temperature test box according to the temperature and humidity information; the charging and discharging experiment module is used for controlling the power battery system to charge and discharge according to the charging and discharging command; the cooling liquid temperature control module is used for controlling the temperature of the power battery system according to the temperature control command; and the high-low temperature test box is used for adjusting temperature and humidity in the box according to the temperature and humidity command. According to the invention, the temperature control strategy / temperature control unit design can be continuously optimized, the temperature control energy consumption is minimized, and the driving range of the whole vehicle is prolonged, so that the temperature control development progress of the power battery is accelerated, and the test time of the whole vehicle is shortened.

The invention discloses a novel low-inductance SiC Mosfet vehicle power module. The novel low-inductance SiC Mosfet vehicle power module comprises a power module body, wherein the power module body mainly comprises an insulating ceramic substrate and a SiC Mosfet chip arranged on the insulating ceramic substrate, the back surface of the chip is connected to a conductive copper layer power circuit etching area of the insulating ceramic substrate through a silver sintering surface, a front power electrode of the chip is connected with copper foil through the silver sintering surface, the upper surface of the copper foil is connected to the conductive copper layer power circuit etching area of the insulating ceramic substrate through a copper wire, and a signal electrode of the chip and a conductive copper layer signal circuit etching area of the insulating ceramic substrate are subjected to signal and control circuit electrical connection through an aluminum wire; and a copper signal terminal is arranged on the front surface of the insulating ceramic substrate, a heat dissipation copper substrate is arranged on the back surface of the insulating ceramic substrate, an injection molding shell is arranged on the heat dissipation copper substrate, and high-temperature silica gel is arranged in the injection molding shell and is sealed through a plastic upper cover.

The invention discloses a high-strength heat transfer structure for cooling a power battery. The high-strength heat transfer structure is formed by laminating multiple groups of battery heat transferunits; each group of battery heat transfer unit comprises a single lithium ion battery (1), a graphene membrane (2), a plurality of heat transfer tubes (3) and a water cooling plate (4), wherein eachgraphene membrane (2) is arranged on the surface of the corresponding single lithium ion battery; the plurality of heat transfer tubes are respectively and alternately arranged on two surfaces of eachsingle lithium ion battery and are in contact with the corresponding graphene membrane; each water cooling plate is connected to the heat transfer tubes; a phase change dielectric layer (34) is arranged on the inner wall of each heart transfer tube; heat of the single lithium ion batteries is transferred to the heat transfer tubes through the corresponding graphene membranes and is transferred tothe water cooling plates through the corresponding phase change dielectric layers. The high-strength heat transfer structure disclosed by the invention has the advantages that heat dissipation capability of a battery pack can be improved; meanwhile, the mass of the battery pack is reduced and the manufacturing cost of the battery pack is reduced.

A forced convection power battery heat dissipation device. Several cylindrical batteries are arranged at intervals in the battery pack box with the opening upward. At least one thermal diffusion plate is arranged in the battery pack box between the top and bottom of the battery. The thermal diffusion plate is tightly connected by the sleeve. The jacket is placed on the battery; the space of the battery pack box under the thermal diffusion plate is filled with a heat-absorbing and heat-conducting material layer, and above the thermal diffusion plate, the side walls on both sides corresponding to the opposite sides of the battery pack box are respectively provided with air inlets and exhaust outlets. And / or a fan is arranged on the exhaust port; or, there is a gap between the thermal diffusion plate and the side wall of the battery pack box, and air inlets and exhaust ports are respectively set up on the opposite side walls of the battery pack box, and the air inlet and / or A fan is arranged on the exhaust outlet, and the ventilation holes are opened or not opened on the heat dissipation plate. The device can be used not only for active air-cooled heat exchange, but also for passive heat dissipation filled with phase change materials. The heat dissipation effect is good, the temperature distribution is more uniform, the shape is compact, and the structure is simple, and it is suitable for power battery systems.

The invention provides a modular solid oxide fuel cell system. The system comprises a gas supply module, a waste heat recovery module, a galvanic pile module, a tail gas combustion module, a heat pipe module, an energy storage module, and a temperature detection and control module; a load module, the gas supply module, the waste heat recovery module and the galvanic pile module are connected in sequence; the output end of the galvanic pile module is connected with the tail gas combustion module; the heat pipe module is connected with a heat storage module and the galvanic pile module, the energy storage module is connected with the galvanic pile module, the output end of the heat pipe module is connected with the waste heat recovery module, and the waste heat recovery module exchanges heat with supplied gas of the gas supply module through a heat exchanger. The load module is responsible for tracking external load changes and transmitting load signals to the control module. According to the invention, redundant heat is stored by using the energy storage system, the temperature nonuniformity in a stack is reduced, and the service life of the SOFC is prolonged. A load tracking and electric pile sub-module in the load module and a lithium ion battery are used for carrying out quick load response, so that the stability and the reliability of an electric pile are improved.

The invention discloses a heating device for a Hopkinson pressure bar test, which comprises a movable supporting platform, a tubular heating furnace and an electric control box. The tubular heating furnace is mounted on a sliding plate of the movable supporting platform. Two groups of sliding rails and a plurality of fixed sliding beads are arranged on the upper surface of the sliding plate. Two alundum tubes are symmetrically sleeved at two ends of a heat-resistant steel tube. Heat-resistant bricks are respectively built around the external surfaces of the joints of the two alundum tubes and the heat-resistant steel tube. The heat-resistant bricks are provided with through holes for mounting silicon carbide rods. Insulating linings are sleeved on the external surfaces of a hearth and the heat-resistant bricks. Positions where inner cavities of the insulating linings correspond to the through holes on the heat-resistant bricks are all provided with mounting holes of the silicon carbide rods. Aluminum silicate fibrous carpets package the external surfaces of the insulating linings. A furnace shell is packaged on the external surfaces of the aluminum silicate fibrous carpets and the insulating linings. A base is fixed on the furnace shell. Two heat-insulating covers are respectively mounted in the hearth from hearths at two ends, and end cover bolts are fixed at two ends of the furnace shell. In the invention, the tubular heating furnace can move in the up-and-down direction, the leftward-rightward direction and the frontward-backward direction of the platform, and the heating device has the characteristics of good heat-insulating performance and convenience in repair.