46results about How to "Improve uniformity of temperature distribution" patented technology

The invention discloses a heater based on a transparent silver nanowire conducting thin film and a preparation method of the heater. The heater is simple in structure, uniform in heating and resistant to corrosion. The heater comprises a transparent substrate, the transparent conducting thin film, a conducting electrode and a protective layer. The heater is applied to defogging glass, a thermochromic substrate, a sensor substrate and the like. The preparation method of the heater comprises the steps of hydrophilization processing of the substrate, preparation of the transparent conducting thin film, preparation of the conducting electrode and preparation of the protective layer. According to the heater, silver nanowires synthesized through a low-temperature liquid phase method are used as raw materials, the transparent substrate is coated with the transparent conducting thin film through a non-vacuum non-high-temperature filming technology, the heating uniformity of the thin film is improved through technically mature and commercial conducting polymers, and the thin-layer protective film is obtained by means of liquid phase coating of cheap organic polymers. The heater is simple in structure, the raw materials are cheap, the requirement for preparation technological conditions is low, and large-scale production is facilitated.

The invention discloses an airborne phased array antenna phase change heat storage liquid cooling heat dissipation box, which aims to provide a phased array antenna box body with fast heat dissipation, good effect and high heat dissipation efficiency and combining liquid cooling heat dissipation and phase change heat storage. The heat dissipation box is realized through the following technical scheme: the bottom of a box body (1) is a heat dissipation base (3), the upper layer of the heat dissipation base (3) is a liquid cooling layer (4), and the lower layer is a phase change material layer (5); the liquid cooling layer is provided with an S-shaped liquid cooling flow channel, a liquid cooling inlet and a liquid cooling outlet; the phase change material layer is provided with a pluralityof honeycomb-shaped partition frame cavities enclosed between a liquid cooling layer partition plate and a box body bottom plate; the liquid cooling flow channel transfers heat out by theflow of the liquid cooling coolant; and the phase change material layer transfers heat generated by the phased array antenna to the phase change material stored in the phase change material layer by utilizing a metal partition frame connected between the partition frame cavities. The invention solves the problem that the antenna heat of the phased array antenna cannot be exported in time due to the interruption of the liquid supply under a short-time emergency condition.

The invention provides a wind cooling heat radiation structure of a power battery pack. The heat radiation structure comprises a box body, an air inlet flow passage and an air outlet flow passage, wherein the box body is used for accommodating a power battery pack; the air inlet flow passage and the air outlet flow passage are communicated with the box body and are respectively arranged on the twoopposite side surfaces of the box body; the bottom surface of the box body is a flow guide plate; the top surface of the box body is a current collecting plate; the flow guide plate and the bottom plate of the air inlet flow passage are positioned on the same plane; the current collecting plate and the top plate of the air outlet flow passage are positioned on the same plane; a flow division sheet is arranged at one side, near the box body, of the current collecting plate and/or the flow guide plate; the flow division sheet is inclined in the fluid flowing direction; the included angle between the flow division sheet and the current collecting plate and/or the flow guide plate is greater than 0 degrees but smaller than 90 degrees. The wind cooling heat radiation structure of the power battery pack is simple and reasonable; the heat radiation problem of the battery in the parallel ventilation mode can be improved at the stable state, so that the distribution of the air fluid inside thebox body provided with the power battery pack is uniform.

A semiconductor-producing apparatus increases both the cooling rate of the heater and the uniformity in the temperature distribution of the heater. The semiconductor-producing apparatus of the present invention is provided with a heater for heat-treating a semiconductor wafer and a cooling block for cooling the heater. The cooling block is provided with at least one through hole for inserting a penetrating object. The distance from the inner surface of the or each through hole to the penetrating object is at most 50 mm. The cooling block is arranged such that it can both make contact with and separate from the heater's face opposite to the face for placing the wafer. The foregoing penetrating object is a current-feeding electrode for feeding current to the heater circuit, a temperature-measuring means, or the like.

The invention provides a soft package battery system with liquid cooling. The soft package battery system comprises a battery body and a battery box, wherein the battery body comprises a plurality of battery cell modules, the battery body is placed in the battery box, and a mounting gap is formed between every two adjacent battery cell modules; a liquid cooling assembly is fixed on the battery body and comprises a bottom cold plate and side cold plates, the bottom cold plate is provided with a plurality of side cold plates, and the plurality of side cold plates are inserted into the mounting gaps, so that the two side surfaces of the battery cell modules are attached to the second heat-conducting silica gel of the adjacent side cold plates, and the bottom surfaces of the battery cell modules are attached to the first heat-conducting silica gel on the bottom cold plate. Through heat dissipation of the bottoms and the side surfaces of the battery cell modules, the structural design that the plurality of side cold plates are matched with the bottom cold plate, and the design of the cold plate flow channels, the temperature distribution uniformity can be effectively improved on the premise of meeting high-rate charging and discharging, and the problem that the design space of a battery system is limited can also be solved.

The invention discloses a clamp used for depositing a diamond film on an inner bore and a process for depositing the diamond film by using the clamp. The coating diamond film is deposited through cleaning, drying, pretreatment, workpiece polishing and grinding, nucleation through hot filament CVD deposition equipment, growth, etc. The diamond film deposited in the invention has the characteristics of a Vickers hardness value of HV9000, continuous, uniform and compact coating morphology and excellent heat radiation performance.

The invention discloses a direct-injection type fan-shaped nozzle applied to a cavity structure of an afterburner, relates to the direct-injection type fan-shaped nozzle which is installed in the cavity of the afterburner and used for enhancing fire stabilization performance and flame connection performance, and belongs to the field of aeroengines. According to the direct-injection type fan-shapednozzle applied to the cavity structure of the afterburner, a plurality of direct-injection type spray holes distributed in a certain shape are formed in the bottom end of each oil injection rod and used for spraying fuel into the cavity structure in the afterburner, the fuel forms a fan-shaped oil mist annular surface after being sprayed and atomized through the shape of the holes, the fan-shapedoil mist surfaces of every two adjacent oil injection rods intersect, and an oil mist ring concentric with a casing is formed in the cavity structure. The fuel atomization effect is enhanced, the circumferential flame connection performance is enhanced, and the combustion efficiency is improved. The direct injection type fan-shaped nozzle is small in machining difficulty, high in machining precision and small in nozzle hole diameter, so that the fuel atomization effect is good, and the overall performance of the afterburner is greatly improved.

The invention discloses an aluminum-made vertical heat sink device with high temperature distribution uniformity. The heat sink device consists of fin tube array sides, a metal corrugated soft pipe, a plurality of thermal insulating material layers and a temperature acquisition system, wherein an eight-prism-shaped side surface is formed by eight fin tube array sides being 460mm*1160mm; two fin tube array sides being 1120mm*1200mm are respectively used as the top surface and the bottom surface of the heat sink device; the metal corrugated soft pipe is connected with the surfaces so as to integrate an inner cavity of the whole heat sink device; thermistors in the temperature acquisition system are adhered to the outer surface of the heat sink device; and the plurality of thermal insulating material layers are wrapped at the outermost surface of the device. The aluminum-made vertical heat sink device has the advantages of good temperature distribution uniformity, good cooling effect, rapid cooling speed, small size, convenience in operation and maintenance, and the like, and has a good practical value and an application prospect in the field of space technologies.

A radial reactor for preparing vinyl (or propenyl) carbonate has a central feeding pipe with perforated wall, concentric internal and external cylinders with pinholes, catalyst bed between said internal and external cylinders, and U-shaped tube in catalyst bed. Its advantages are high utilization rate and long service life of catalyst, high conversion rate of epoxy ethane and high selectivity.

The invention relates to the technical field of vehicle manufacturing, in particular to a heat pump air conditioning system and a vehicle. The heat pump air conditioning system comprises a heat pump air conditioning unit, a heating piece cooling unit, a battery cooling unit and a first pipeline, wherein the heat pump air conditioning unit comprises an outdoor heat exchanger; the heating piece cooling unit comprises a heating piece cooling plate and a first heat exchanger which are connected with each other and form a loop; the battery cooling unit comprises a battery cooling plate and a secondheat exchanger which are connected with each other and form a loop; the first heat exchanger and the second heat exchanger are connected in series through the first pipeline, and the first pipeline is connected with the outdoor heat exchanger in parallel. According to the heat pump air conditioning system, the problem that in the prior art, the heat generated by a heating device can be recycled or cooled, the number of valves in the system is more and the corresponding joint is more, so that the risk of refrigerant leakage of the system is increased are avoided.

The friction surface microstructure scratch-resistant brake disc body comprises a friction ring, bolt holes are evenly distributed in the friction ring in the circumferential direction, a plurality of through chip removal scratch-resistant grooves are formed in the friction surface of the friction ring, and the chip removal scratch-resistant grooves are symmetrically formed in the two sides of each bolt hole in pairs; the two ends of the chip removal scratch-resistant groove extend to the inner edge and the outer edge of the friction ring respectively, and the chip removal scratch-resistant groove passes through a high vertical deformation area (instantaneous high heat area) of the friction ring in a long path. The chip removal scratch-resistant grooves distributed on the friction surface of the disc body can discharge friction chips and block scratches, so that local heat dissipation is improved, and the temperature distribution uniformity of the disc body is improved.

The invention discloses a large-strain nickel-chromium alloy ultrafine filament monofilament continuous annealing device which comprises a filament unwinding system arranged at the front end, a filament winding system arranged at the rear end and a temperature control system arranged between the filament unwinding system and the filament winding system. The temperature control system comprises a quartz tube, a heating ring arranged outside the quartz tube and a heat insulation layer arranged outside the heating ring; the wire unwinding system and the wire winding system are matched to enable a superfine NiCr alloy wire in the drawing state to pass through the quartz tube at a constant speed; and a first gas inlet forming an angle of 45 degrees with the quartz tube and a second gas inlet forming an angle of 225 degrees with the quartz tube are formed in the front end of the quartz tube. Nitrogen is introduced into the first gas inlet and the second gas inlet respectively, so that effective annealing temperature fields which are symmetrically distributed are formed in the quartz tube. According to the method, the plastic deformation performance of the large-strain NiCr alloy wire in the drawing state can be recovered, the temperature distribution uniformity of a heat treatment area can be effectively improved, and the surface oxidation problem in the annealing process of the alloy wire can be solved.

The invention discloses a preparation method of a milling cutter with a diamond coating for processing pure titanium porcelain teeth and zirconium dioxide false teeth. The preparation method comprises the following steps of cleaning, drying, performing pretreatment, polishing and grinding a workpiece, nucleating by a hot wire CVD (chemical vapor deposition) device, growing and depositing a coating diamond thin film. According to the preparation method disclosed by the invention, the phenomena of difficult cutting, fast abrasion of the cutter, blade breaking, blade sticking and the like of a titanium alloy, zirconium dioxide and other difficult-to-process materials in cutting processes can be eliminated.