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545results about How to "Improve heating efficiency" patented technology

Method for using polyolefin plastic to prepare micromolecule alkene

The invention provides a method for using polyolefin plastic to prepare micromolecule alkene. According to the method, at first, the polyolefin plastic is cracked, then a liquid/ waxy product obtained through cracking is mixed with selectable liquid petroleum hydrocarbon and water, and the mixture is subjected to microwave pyrolysis to obtain micromolecule alkene. The method specifically comprises the following steps that the polyolefin plastic is conveyed into a moderate cracking device to be cracked, and a gas product a and the liquid/ waxy product b are obtained through gas-liquid separation; the product b is mixed with selectable liquid petroleum hydrocarbon and the water, and the mixture serves as a microwave pyrolysis raw material; and the microwave pyrolysis raw material is mixed with the water, the mixture is conveyed into a microwave pyrolysis device, after microwave pyrolysis is carried out, the mixture is quenched to be 500 DEG C or below, and a cracked product is obtained. According to the method, microwave heating of hydrocarbon raw materials insensitive to microwaves is achieved, the source of the raw material for preparing micromolecule alkene is expanded, by means of the inner heating characteristic of microwave heating, the cracking temperature is increased, the cracking efficiency is improved, and energy consumption is lower than that of a traditional pipe cracking furnace.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI

Restrained induction heating electromagnetic riveting device and method

InactiveCN104815941AImprove plasticityImprove heating efficiencyInduction heaterPower flow
The invention relates to a restrained induction heating electromagnetic riveting device, comprising a restrained induction heater for quickly heating a rivet head to be formed, wherein the restrained induction heater comprises an induction heating coil connected with a high-frequency current generating power supply, and a plurality of ferrites for restraining a magnetic field are annularly arranged on the induction heating coil; the restrained induction heater also comprises a silicon steel sheet arranged on the outer sides of the induction heating coil and the ferrites for shielding the leaked magnetic field, the restrained induction heater sleeves the tail end of the amplifier of an electromagnetic riveter and is fixedly connected with the shell of the electromagnetic riveter by a support frame, the amplifier moves with respect to the restrained induction heater to form a heated rivet head to be formed; the invention also relates to restrained induction heating electromagnetic riveting method. According to the restrained induction heating electromagnetic riveting device, the rivet is quickly heated by the restrained magnetic field, and meanwhile a composite board is not damaged; the restrained induction heater is reasonably combined with the electromagnetic riveter, so that the restrained induction heating electromagnetic riveting device is high in forming efficiency, simple in technology and applicable to the structure with poor openness.
Owner:FUZHOU UNIVERSITY

Air fryer

ActiveCN104068757AGood hot air circulationImprove heating efficiencyRoasters/grillsFront coverEngineering
The invention belongs to the field of manufacturing of electric appliances of household kitchen and particularly relates to an air fryer. The air fryer is mainly composed of a pot body (1) and an inner container assembly (2), a cavity for containing the inner container assembly (2) is formed in the lower portion of the pot body (1), a pot cover (10) located above the cavity is arranged in the pot body (1), a fan (11) and a heating assembly (12) are arranged on the lower potion of the pot cover (10), the inner container assembly comprises an inner container (20), a frying basket (21) and a shell (22) matched with the external shape of the pot body (1), the inner container (20) is movably arranged on the shell (22), the pot cover (10) is buckled in an opening above the inner container (20) when the inner container assembly (2) is arranged in the pot body (1), the inner container (20) is of a flat bottom structure, a locating seat is arranged in the center of the inner container (20), a flow guide body (3) is movably arranged on the locating seat and comprises an upper fixing seat (30) for containing the frying basket and a lower conical arc face flow guide seat (31), the diameter of the upper end of the conical arc face flow guide seat (31) is smaller than that of the lower end of the conical arc face flow guide seat (31), and an air flow hole (32) is formed in the bottom of the fixing seat (30). The air fryer of the structure is high in heat efficiency.
Owner:严绍基

Electromagnetic induction heating device and method thereof

The invention relates to an electromagnetic sensing heating device and a method thereof. The electromagnetic sensing heating device comprises a microprocessor, a modulation circuit, a driving circuit, an insulated gate bipolar transistor (IGBT) half-bridge circuit, a main oscillation circuit and a synchronizer circuit, wherein the input end of the modulation circuit is connected with an input/output (I/O) port of the output end of the microprocessor, and the output end of the modulation circuit is connected with the driving circuit; the output end of the driving circuit is connected with the control end of the IGBT half-bridge circuit; the output end of the IGBT half-bridge circuit is connected with the control end of the main oscillation circuit; and the input end of the synchronizer circuit is connected with the main oscillation circuit in serial, and the output end of the synchronizer circuit is connected with the driving circuit. The heating efficiency of the heating device is higher than that of a traditional half-bridge circuit. The improved half-bridge circuit is connected with an inversion circuit in serial, so the cost of a full-bridge circuit is greatly reduced. A control strategy combining a constant-power temperature control method and a temperature control method is adopted, so good transient-state performance and good stable performance can be realized, and higher precision and higher reaction sensitivity can be realized.
Owner:STATE GRID CORP OF CHINA +1

Film slitting machine preventing edge curling

The invention provides a film slitting machining preventing edge curling and belongs to the mechanical technical field. The film slitting machining preventing edge curling solves the technical problemthat an existing film slitting machine is poor in cutting effect. The film slitting machining preventing edge curling comprises a machine frame. A feeding roller is rotationally arranged on the machine frame. A plurality of extension rollers and adhesion rollers are sequentially and rotationally arranged on one side of the feeding roller. The extension rollers and the adhesion rollers are rotationally arranged on the machine frame. A tensioning structure used for tensioning the film is arranged between the extension rollers and the adhesion rollers. The side, far away from the extension rollers, of the adhesion rollers is further sequentially provided with a cutting mechanism used for film slitting and a coiling mechanism for slit film. A heating roller used for preventing the edges of the film strips from curling and a strip separating block capable of separating adjacent cut film strips in a staggered manner are sequentially arranged between the cutting mechanism and the coiling mechanism. The strip separating block and the heating roller are fixedly arranged on the machine frame. The film slitting machine preventing edge curling has the advantage of being good in slitting effect.
Owner:ZHEJIANG SHANGCHENG SCI&TECH

Energy-saving heat supply system for decreasing temperature of heating return water and recovering waste heat of thermal power plant

The invention relates to an energy-saving heat supply system for decreasing temperature of heating return water and recovering waste heat of thermal power plant and aims to solve the problems such that waste heat of a cooling column in a power plant cannot be fully utilized, and energy for direct combustion of coal and natural gas is greatly wasted. According to the system, the waste heat of the cooling column in the power plant is recovered, return heat of a heating primary network is borrowed, and energy saving is significantly effective. An absorbing heat pump is driven to work by combustion of coal or natural gas, heat in return water of a primary network of a combined heat and power generation heating pipeline is borrowed, heating area can be effectively enlarged, and the waste heat of the cooling column in the power plant is delivered to an urban heat network place. A temperature difference between supply and return waters is 108 DEG C, along with another temperature difference generated by electric power, and overall heating temperature difference is up to 160-180 DEG C. Delivery efficiency of a pipeline network is greatly improved, great significance to continuously increasing urban energy conservation is achieved, and related cyclic energy consumption of the primary network is decreased to less than one fourth of the original consumption.
Owner:DALIAN BAOGUANG ENERGY SAVING AIR CONDITIONING EQUIP

Heating control method and device for air conditioner system and air conditioner system

The embodiment of the invention provides a heating control method and device for an air conditioner system and the air conditioner system. The method includes the steps that the temperature of a compressor cylinder block and the temperature of the outdoor environment are obtained; an air conditioner system running instruction input by a user is received, wherein the air conditioner system running instruction includes a booting instruction or a standby instruction; and the output power of an electromagnetic heating device is determined according to the air conditioner system running instruction, the temperature of the air compressor cylinder block and the temperature of the outdoor environment, the control instruction is sent to the electromagnetic heating device, and therefore the electromagnetic heating device works according to the output power. By means of the heating control method and device for the air conditioner system and the air conditioner system in the embodiment, the booting waiting time spent after a power source of the air conditioner system is turned on can be shortened, and under the electrified standby condition (without the booting demand) and on the premise that the temperature of an oil groove of a compressor is ensured, the purpose of saving the standby power consumption is achieved.
Owner:HISENSE (SHANDONG) AIR CONDITIONING CO LTD

Nitrogen protective continuous type brazing furnace

The invention discloses a nitrogen protective continuous type brazing furnace. The brazing furnace comprises a rack and a furnace body which is fixed to the rack and internally provided with a furnace chamber; the furnace body is provided with an inlet and an outlet which are used for entering the furnace chamber, nitrogen sealing mechanisms are arranged at the inlet and the outlet, one end of a conveying belt is provided with a feeding mechanism used for jacking a brazed object to the conveying belt, the other end of the conveying belt is sequentially provided with an air cooling region and a water cooling region which are located on the conveying belt, the furnace chamber is internally provided with a pre-heating region and a heating region, and the heating region is provided with a heating nozzle and an air-conveying fan which can blow hot air to the pre-heating region. Compared with the prior art, structures such as a traditional spraying region and a drying region are saved, the mechanical structure is simplified, the heating efficiency inside the furnace is improved by using a recycling fan, by means of the air-conveying fan, the heat of the heating region can be directly blown to the pre-heating region, the energy is saved, an air-cooling then water cooling method is adopted on a cooling segment, cooling water is prevented from leaking into the furnace body, and the brazing efficiency and quality are improved.
Owner:ZHEJIANG CHUANGXIN AUTO AIR CONDITIONER

Auxiliary curing method for cold weather concrete by electric heating tapes

The invention relates to an auxiliary curing method for cold weather concrete by electric heating tapes. The auxiliary curing method is characterized by comprising the following steps of: (1) supporting a mould plate firstly, and paving the electric heating tapes in a cast-in-situ member and fixing the electric heating tapes on steel bars by fixing tapes after the steel bars of the cast-in-situ member are installed and an embedded part is placed and welded; and (2) pouring the concrete after the electric heating tapes are detected to be intact, covering a heat-insulating material on the surface of the cast-in-situ member, electrifying the electric heating tapes after the covering of the heat-insulating material, and heating the concrete to keep the temperature of the concrete at 5-8 DEG C. According to the auxiliary curing method disclosed by the invention, because the self-temperature-control electric heating tapes are uniformly arranged in the concrete member, the concrete can be directly and uniformly heated with high efficiency; the heating mode is from inside to outside, so that the surface heat loss of the member is less, and energy is saved; the auxiliary curing method can be used in any construction site without the influences of the heights and the sizes of buildings; and the construction is simple and safe, and is less prone to electric shock accidents.
Owner:THE SECOND CONSTR ENG CO LTD OF CHINA CONSTR THIRD ENG BUREAU

Preparing method for high-temperature resistant metal/ceramic composite heating unit material

The invention discloses a preparing method for a high-temperature resistant metal/ceramic composite heating unit material. The preparing method comprises the following steps that ceramic tape-casting paste is prepared and cast into a plate type ceramic blank in a tape mode; metal paste for silk-screen printing is prepared, and a plate type composite blank is prepared through silk-screen printing; laminating and heat sealing are carried out to obtain a plate type heating unit material blank; low-temperature tape casting and freeze drying are carried out to obtain a composite heating unit material prefabrication body; sintering is carried out to obtain a composite heating unit material; finally the high-temperature resistant metal/ceramic composite heating unit material is obtained through an impregnation method. The preparing method for the high-temperature resistant metal/ceramic composite heating unit material solves the problems that a heating unit material prepared through equipment in the prior art is low in heating efficiency, short in service life and the like, and the material is resistant to high temperature, high in heating efficiency and long in service life, and has wide application prospects in the fields of internal combustion engine air inlet heating manifolds, carburetors, infrared heat sources, igniters, engine glow plugs, solid oxide fuel cells and the like.
Owner:XIAN UNIV OF TECH

Spray pyrolysis device with microwave heating and method for preparing ternary precursor thereof

The invention provides a spray pyrolysis device with microwave heating and a method for preparing a ternary precursor thereof. The spray pyrolysis device comprises a microwave heating unit and a sintering unit from top to bottom; wherein the cavity of the microwave heating unit is provided with at least one set of microwave generator module. The method comprises the following steps: spraying ionized water into the spray pyrolysis device through an atomizing device, sequentially starting microwave generators of an evaporation zone, a drying zone and a thermal decomposition zone, switching the deionized water to a ternary precursor mixed solution after the temperature of the midpoint in the horizontal direction of each zone reaches a set value, and carrying out spray pyrolysis to obtain theternary precursor powder. By microwave heating for the evaporation zone, the drying zone and the thermal decomposition zone of the spray pyrolysis device, the problems of hollowing and breaking of secondary particles of the precursor prepared by spray pyrolysis are fundamentally solved, and favorable conditions are created for the preparation of the ternary precursor having high tap density, smallspecific surface area and low chloride content.
Owner:HENGDIAN GRP DMEGC MAGNETICS CO LTD

Liquefied petroleum gas tobacco curing house

The invention relates to the technical field of tobacco curing equipment, in particular to a liquefied petroleum gas tobacco curing house. The liquefied petroleum gas tobacco curing house comprises a hot air chamber provided with a heating device, and a tobacco curing chamber provided with a tobacco hanging rack, a circulation flue is formed between the tobacco curing chamber and the hot air chamber through an air inlet and an air return opening, and the heating device is connected with a heat exchange pipe. A first draught fan is arranged at the part, close to the air inlet, of the lower portion of the hot air chamber, and a second draught fan blowing upwards is arranged on the part, opposite to the first draught fan, of the lower portion of the tobacco curing chamber. The tobacco hanging rack comprises vertical rods arranged vertically and transverse rods arranged transversely, and a plurality of clamping parts used for being connected with the transverse rods in a clamping mode are arranged on the vertical rods. The novel tobacco curing house further comprises motors arranged on the lower portions of the vertical rods respectively and transmission rods connected with the motors, and the upper portions of the transmission rods are connected with the bottoms of the vertical rods. The heating device is a liquefied petroleum gas fuel heating device. Liquefied petroleum gas serves as fuel of the liquefied petroleum gas fuel heating device, environmental friendliness and cleanness are achieved, and the liquefied petroleum gas tobacco curing house has the advantages of being clean, sanitary, safe, cheap, high in heating efficiency, convenient to use and the like.
Owner:GUANGDONG BRANCH OF CHINA TOBACCO GENERAL

Non-combustion type cigarette smoking device based on electromagnetic induction heating

The invention discloses a non-combustion type tobacco cigarette smoking device based on electromagnetic induction heating. The device comprises a shell, a smoking nozzle is connected to one end of the shell, a heating tube is arranged in the shell, a tobacco heating cavity used for containing a tobacco product is formed in the heating tube, the heating tube is wrapped with a thermal insulation layer, an electromagnetic induction coil is wound on the thermal insulation layer, a PCB, a switch and a power module which are connected with the electromagnetic induction coil are further arranged in the shell, and the switch extends out of the shell; the smoking nozzle is provided with a smoking hole which is communicated with the tobacco heating cavity, air holes communicated with the tobacco heating cavity are formed in the surface of the shell, and the air holes are located at the end, far away from the smoking nozzle, of the shell. In the using process of the non-combustion type cigarette smoking device, a traditional cigarette or tobacco shred can be placed in the tobacco heating cavity, the heating tube is heated by way of the electromagnetic induction heating, thereby the cigarette or the tobacco shred is heated, generated volatile matters enter the oral cavity through the smoking nozzle, and a user acquires the sense of satisfaction. By means of the non-combustion type cigarette smoking device, physiological needs of people for smoking can be satisfied, and meanwhile harm of 'passive smoking' is reduced.
Owner:CHINA TOBACCO GUANGXI IND

Method and device for preparing high-purity silicon monoxide by medium-frequency induction heating way

PendingCN106608629AContinuous and stable equipmentImprove heating efficiencyChemical industrySilicon oxidesSilicon oxygenChemistry
The invention relates to the technical field of preparation of high-purity silicon monoxide, in particular, relates to a method and device for preparing high-purity silicon monoxide by a medium-frequency induction heating way, and is characterized in that the preparation method comprises the following steps: 1, preparing raw materials: mixing high-purity silicon with the content of more than 99.5 wt% and silicon dioxide with the content of more than 99.5 wt% according to the weight ratio of 1:1; 2, carrying out medium-frequency induction heating; and 3, cooling to obtain the finished product; when the medium-frequency induction heating temperature is 1200-1600 DEG C, the molar ratio of the raw materials of high-purity silicon and silicon dioxide is adjusted, and the value of x in the product SiOx is a fixed value; but when the medium-frequency induction heating temperature is more than or equal to 1600 DEG C, the value of the molar ratio of the raw materials of high-purity silicon and silicon dioxide is controlled to be 0.88-1.2, and the value of x in the product SiOx is adjustable in a range of 0.89-1.10. Compared with the prior art, the method and the device have the advantages of high heating efficiency and stable equipment; products with different silicon-oxygen ratios are obtained by adjustment of the heating temperature and the ratio of the raw materials.
Owner:SHANGHAI SHANSHAN TECH CO LTD
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