CN102858042A - Open type multimode electromagnetic heater - Google Patents
Open type multimode electromagnetic heater Download PDFInfo
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- CN102858042A CN102858042A CN2011101844579A CN201110184457A CN102858042A CN 102858042 A CN102858042 A CN 102858042A CN 2011101844579 A CN2011101844579 A CN 2011101844579A CN 201110184457 A CN201110184457 A CN 201110184457A CN 102858042 A CN102858042 A CN 102858042A
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Abstract
The invention relates to technologies and equipment for in-situ quick solidification of surface coatings of military equipment, and belongs to technologies for quick repairing and emergency maintenance of damages to equipment surface coatings. The open type multimode electromagnetic heater comprises a transformer, a magnetron, a waveguide, a waveform stirrer, a heating cavity, a choke groove, an infrared electric heating device, a surface temperature sensor, a control panel and the like. The open type multimode electromagnetic heater can realize quick heating solidification of coatings in equipment repairing areas in short time, and equipment demounting is not needed, so that battlefield maintenance efficiency of the equipment is greatly improved. In addition, the open type multimode electromagnetic heater has functions of multimode heating and temperature monitoring, and is good in solidification quality, wide in application range of coating and simple and convenient to operate.
Description
Technical field
The field is repaired in the outfield that the invention belongs to equipment fast, and the concrete rapid curing that is used for the face coat of equipment relates to the electromagnetic heating apparatus that the equipment coating is repaired fast.
Background technology
For my army's active service military equipment, metal material still uses in weaponry in a large number, and along with the day by day raising to performance requirements such as the anticorrosion of equipment and simulation and stealthies, the equipment surface is a large amount of uses the functional coatings such as anticorrosion and stealthy.And be equipped in use or the breakdown maintenance process, can cause unavoidably the coating on surface to be destroyed, and then can cause the reduction of equipment camouflage Stealth Fighter, also can be the beginning that equipment enters the quick corrosion stage.Realize the quick reparation of table of equipment finishing coat, for the logistics support requirement that the Future Information local war is won by my army, be very important.Realize the quick reparation of table of equipment finishing coat, key is to realize the rapid curing of coating for metal surfaces.
Traditional coating technology of being heating and curing is to utilize conduction, radiation and the convective principles of heat, such as more typical heated-air drying and induction heating.Hot Air Drying is to add hot-air by resistance heating, and the air that then will be heated to uniform temperature by frequency conversion fan directly blows to coating surface, and the coating of substrate surface is dried.There is following shortcoming in technique:
(1) thermal inertia is large, and the mode of employing resistance heating adds hot-air and has hysteresis quality, and temperature is difficult for realizing automatically control;
(2) solidification effect of coating is subjected to more multifactor (such as speed, hot blast humidity, exhaust rate and the relative humidity etc. of hot air flow, volume, gas ejection) impact, is difficult to choose the technological parameter that makes solidification effect good;
(3) warm-up time of equipment long, belong to indirect, energy consumption is high, the heat efficiency is low.
What induction heating used is Faraday's electromagnetic induction phenomenon, when the metallic matrix that has applied coating is placed the variation magnetic field of high frequency, can produce induced electromotive force in the metal, thereby produce current vortex, the existence of metallic resistance raises metal temperature, thereby the effects on surface coating is carried out heating, drying.The relative heated-air drying of induction heating, firing rate and capacity usage ratio increase, and controllability has very large enhancing, but it needs multistage cooling, and systematic comparison is complicated, and operating cost is higher.
The above-mentioned shortcoming of heated-air drying and induction heating method makes the method be very limited in the application aspect the rapid curing of coating, and the microwave and the near-infrared heating that occur subsequently have a extensive future at the rapid curing of coating.
Microwave be frequency in 300 megahertzes～300 gigahertzs, wavelength has a kind of electromagnetic wave than strong penetrating power between 1 millimeter～1 meter.Microwave drying technology occurred and development since the forties in 20th century, because its firing rate is fast, homogeneous heating, and the characteristics such as the selection heating effect that has, field intensity high temperature and frequency high temperature, make its development very fast.Compare traditional coatings such as heated-air drying method that is heating and curing, microwave heating has following advantage: microwave heating can be in coating the mineralization pressure gradient, significantly improve rate of drying; Thermal inertia is little, is convenient to realize the automatic control to heating process; Because the highly reflective of metal pair microwave, the process that is heating and curing of coating is very little on the impact of metal substrate, does not need complicated cooling system, thereby can reduce equipment volume, saves the space; Equipment does not need warm-up time of growing, consumes energy low, and the heat efficiency is high.
The new technology of another coating heating aspect is the near-infrared heating technique, and this technique functions comes from Space Science and Technology, utilizes wavelength can launch the performance of high density emittance at 0.8 micron～1.5 microns near infrared band, obtains higher energy-flux density.In recent years, it is also many that near-infrared heats the example that has been applied to curing of coatings, for example utilization of near-infrared firing equipment in new steel vanadium cold rolling mill.Near-infrared also has the dry solidification speed that can promote, is saving the advantages such as the device space, energy savings and fail safe are good aspect the coating heating.
Although microwave heating and infrared heating technique are applied to being heating and curing of coating more maturely, but the rapid-maintenance field at equipment, as realizing equipping the rapid curing of surperficial reparation, often need to carry out being repaired equipment such as putting into Electromagnetic Heating after parts are dismantled, process is comparatively complicated, also do not have a kind of portable set, realize in situ the rapid curing to equipment coating maintenance area, and have simultaneously microwave and infrared two kinds of heating functions.
Summary of the invention
Technical problem to be solved by this invention is, develops a kind ofly can realize in situ rapid curing to the reparation of military equipment, and reliable, practical, widely applicable, easy to carry, the easy and simple to handle and safe curing of coatings equipment of coating quality after solidifying.For addressing this problem, Development and design this open-type multi-mode electromagnetism heater, it mainly is comprised of several parts such as heating chamber, appliance circuit, microwave heating device, infrared electric heating device, control panels, it mainly comprises microwave and infrared two large heating systems.Wherein the microwave cavity that jointly consists of at the bottom of by magnetron, waveguide, waveform blender, heater and metal backing of microwave heating system and the choke groove of opening part form; The core component of infrared heating system is an infrared electric heating device, and its power supply circuits and microwave device share a power supply.
Under the microwave heating pattern, it is the magnetron power supply that magnetron power source is converted into direct current to alternating current, and magnetron is the core component that produces microwave, and it is converted into the microwave energy with direct current energy.After magnetron produces microwave, microwave energy is outputed to the microwave resonance cavity space that jointly consists of at the bottom of heater and the metal backing by waveguide.Simultaneously, microwave stirrer is set at the furnace chamber top disturbs the propagation of microwave in furnace chamber, make the coating homogeneous heating, thereby realizing the quick-setting curing quality that guarantees simultaneously of coating.This is mainly based on two mechanism: the first, polar molecule in the coating material is under the effect of microwave electromagnetic field, from original random warm-up movement state transfer the alternation of following microwave electromagnetic field to and oriented (as, the microwave frequency that this equipment magnetron produces is 2450 megahertzes, polar molecule will produce alternation 24.5 hundred million times), intermolecular meeting is intensification because of the fierceness friction, and microwave energy changes rapidly the heat energy of coating into; It two is, metal material has strong reflection to microwave, can not penetrate inside for the metal material microwave but be reflected back, like this metallic substrates of coating will with the stainless steel inwall of equipment, form microwave cavity.It is little that these mechanism have guaranteed that microwave pyrogenicity has thermal inertia, and penetration power is good, homogeneous heating, and the capacity usage ratio advantages of higher can make coating media moment intensification, realizes the rapid curing of the rear reparation of equipment.
Under the infrared heating pattern, launch the near-infrared radiation of high fluence density after the energising of infrared electric heating device, simultaneously, because the near-infrared light wavelength is short, has very strong permeability, directly enters coating, the coating temperature is raise rapidly produce the spontaneous heating effect, moisture in the coating volatilizees from inside to outside, can also improve the cross-linked polymeric probability of molecule in the coating, realizes the rapid curing of coating.Because the difference of coating physical property, the efficiency of heating surface of two kinds of heating means and process temperature change also to some extent difference, and equipment can be selected best heating mode according to the physical property that is heated coating.
In addition, for to some face coat to the temperature requirement harshness, having designed the surface temperature sensor that heater carries.This temperature sensor places and is heated coating surface, and the surface temperature of monitoring coating prevents because of excess Temperature infringement face coat.Simultaneously, a plurality of subsystems such as the collection that comprises temperature information, transmission, reception, FEEDBACK CONTROL and warning based on temperature sensor also are embedded in the heating control system of equipment, guarantee the high-quality of curing of coatings.
Based on above-mentioned mechanism and measure, the present invention can carry out fast the reparation of equipping the surface, reliably, high-quality, be heating and curing efficiently, original position, easily the table of equipment finishing coat is repaired fast, realized the purpose to the outfield " rapid rush-repair " of weaponry face coat.Therefore, will further improve the rapid-maintenance supportability that my army is equipped in future war.
Description of drawings
Fig. 1, open-type multi-mode electromagnetism heater overall structure schematic diagram
Fig. 2, magnetron structures schematic diagram
Fig. 3, microwave and infrared power source circuit schematic diagram
Fig. 4, control panel function declaration figure
Embodiment
Fig. 1 is overall structure schematic diagram of the present invention, can realize the rapid curing of face coat under certain power microwave or infrared radiation effect, satisfies the in-situ rapid renovation requirement of equipment coating.Formed by transformer 1, magnetron 2, waveguide 3, waveform blender 4, heating chamber 5, choke groove 6, infrared electric heating device 7, surface temperature sensor 8, control panel 9.Transformer 1 forms voltage doubling rectifing circuit with high-voltage capacitor, high-voltage diode, for magnetron 2 provides very high pulse main flow anode voltage and the about cathode voltage of 3～4V.Magnetron adopts the multi-cavity continuous wave magnetron, electronics is under the control of orthogonal stationary magnetic field and steady electric field in the pipe, interact with the electromagnetic field of high frequency, be transformed into microwave energy from steady electric field, obtaining energy, then by metal waveguide 3 microwave be transmitted into heating chamber 5..Jointly form at the bottom of the metal backing of heating chamber by equipment inner wall and coating, simultaneously in order to be the coating surface homogeneous heating, at heating chamber 5 tops waveform blender 4 is set.In order to prevent the leakage of microwave energy, outside opening, be provided with choke groove 6, adopt the special-shaped slot structure.The power supply circuits of infrared electric heating device 7 are with the public power supply of microwave device.For the coating surface temperature is carried out timely monitor, be embedded with surface temperature sensor 8 at equipment, and show in good time temperature information by control panel 9.The various functions of heating be can control by control panel 9, heating mode selection, Temperature Setting, time setting etc. comprised.
Fig. 2 is the multi-cavity continuous wave magnetron structural representation of using among the present invention, and it is the core component of microwave heating system.The multi-cavity continuous wave magnetron mainly is made of tube core and magnet 14 two parts, and tube core is comprised of anode 10, negative electrode 11, antenna 15 and filament electrode lead-out wire 16, comprises in addition resonant cavity 12 and fin 13.When the connection microwave mode begins to heat, the transformer secondary output heater winding two ends that link to each other with magnetron produce the 3.3V alternating current to magnetron heater 16 power supplies, the approximately 2000V ac high-voltage capacitance current-limiting of simultaneously high pressure winding generation, obtaining approximately behind the diode rectification, the high direct voltage of 2000V is added in anode of magnetron 10, form accelerating field, make electronics anode 10 accelerated motions of negative electrode 11 emissions, and be subject at the volley strong magnetic field action on the permanent magnet 14 formed vertical direction, make rotary electronic anode accelerated motion, generate electromagnetic waves.Anode is made interior dentation, forms resonant cavity 12, and electronics shakes during by resonant cavity, and frequency is rising constantly, exports to heating chamber 5 by antenna 15 (waveguide) when reaching 2450 megahertz.
Fig. 3 is microwave of the present invention and infrared power source circuit schematic diagram, comprises microwave power source circuit and infrared power source circuit, can pass through K switch
M, K
HSelect microwave or infrared two kinds of heating modes.The microwave power source part, the anode voltage of magnetron M is provided behind bridge rectifier by controlled single-circuit transformer B1, and its filament voltage is provided by transformer B2.Infrared power source part, the infrared electric heating device H directly provide both end voltage by transformer B2.Control circuit is by time relay J
SA, J
SS, button switch K and foot switch TK form, and have defencive function, i.e. J
SAProvide magnetron M high pressure delay protection, J
SSProvide magnetron and infrared electric heating device adjustable delay short-circuit protection also can control their operating time, can also point out with voice signal by buzzer FM.Original position reparation for ease of equipment, the maximum power of microwave and infrared radiation is designed to 200W, the operating frequency of microwave is set as 2450 megahertzes, can change microwave power by regulating transformer B1 primary voltage in actual use, selects ir radiant power by regulating transformer.
Fig. 4 is control panel function declaration figure of the present invention.The startup of switch 17 control appliances and closing, when equipment normally started, indicator light 25 gave a green light, otherwise sends out a warning, and need to check equipment this moment, searched and could continue use after being out of order side by side.What knob 18 control heating modes, the black line on the knob were screwed into left that the end represents to use is the microwave heating pattern, is screwed into the end to the right to select the infrared heating pattern.Three display screens of panel middle section are respectively power display screen 19, heating time display screen 23, coating surface temperature reality screen 24, three buttons on power display screen 19 right sides are followed successively by from left to right power and subtract button 20, confirming button 22, power and increase button 21, the heating power of start acquiescence is 200W, determines by confirming button after setting power demand.Heating time display screen 23, coating surface temperature reality screen 24 right sides three push button function and power display screen 19 right sides similar.Can also show simultaneously the time that heating process has experienced the heating time that heating time, display screen 23 not only can reality be set, when heating arrives setting-up time, and indicator light 26 shiny reds (under normal circumstances not bright light), auditory tone cues appears in buzzer 28; The coating maximum temperature that coating surface temperature reality screen 24 not only can reality be set, the in good time variations in temperature in real heating process floating coat surface simultaneously, when coating reaches the maximum temperature of setting, indicator light 27 shiny reds (under normal circumstances not bright light), auditory tone cues appears in buzzer 28.When short trouble appearred in internal circuit, the corresponding sound prompting also can appear in buzzer 28 in addition.
Claims (7)
1. an open-type multi-mode electromagnetism heater is characterized in that, comprising: transformer (1); Magnetron (2); Waveguide (3); Waveform blender (4); Heating chamber (5); Choke groove (6); Infrared electric heating device (7); Surface temperature sensor (8); Control panel (9).
2. according to claim 1, a kind of open-type multi-mode electromagnetism heater is characterized in that: the common heating chamber (5) that forms at the bottom of the metal backing of heater inwall and coating.Leak for effectively reducing microwave radiation energy, at open outer side design choke groove (6).
3. according to claim 1, a kind of open-type multi-mode electromagnetism heater, it is characterized in that: transformer (1) forms voltage doubling rectifing circuit with high-voltage capacitor, high-voltage diode, for magnetron (2) provides very high pulse direct current anode voltage and cathode voltage.The microwave that magnetron (2) produces can be transmitted into heating chamber (5) with microwave by metal waveguide (3).
4. according to claim 1, a kind of open-type multi-mode electromagnetism heater is characterized in that: the power supply circuits of infrared electric heating device (7) share a power supply with microwave device.
5. according to claim 1, a kind of open-type multi-mode electromagnetism heater is characterized in that: adopt the multi-cavity continuous wave magnetron, it is the core component of microwave heating system.The multi-cavity continuous wave magnetron mainly is made of tube core and magnet (14) two parts, tube core is comprised of anode (10), negative electrode (11), antenna (15) and filament electrode lead-out wire (16), comprises in addition resonant cavity (12) and fin (13).
6. according to claim 1, a kind of open-type multi-mode electromagnetism heater, it is characterized in that: for the coating surface temperature is carried out timely monitor, be embedded with surface temperature sensor (8) at equipment, and show in good time temperature information by control panel (9).
7. according to claim 4, a kind of open-type multi-mode electromagnetism heater is characterized in that: can be by the knob 18 control heating modes on the control panel.Three display screens (19), (23), (24) by the panel middle section, show respectively power, heating time, coating surface temperature, subtract button (20), confirming button (22), power by power and increase button (21) and set heating power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101844579A CN102858042A (en) | 2011-07-01 | 2011-07-01 | Open type multimode electromagnetic heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101844579A CN102858042A (en) | 2011-07-01 | 2011-07-01 | Open type multimode electromagnetic heater |
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| CN102858042A true CN102858042A (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101844579A Pending CN102858042A (en) | 2011-07-01 | 2011-07-01 | Open type multimode electromagnetic heater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109820007A (en) * | 2018-11-02 | 2019-05-31 | 广东丰森第五能源科技有限公司 | A kind of automatic dough mixing machine |
| CN109936883A (en) * | 2017-12-15 | 2019-06-25 | 佛山市顺德区美的电热电器制造有限公司 | Method for heating and controlling, device, heating utensil and computer readable storage medium |
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| JPH08332434A (en) * | 1995-06-09 | 1996-12-17 | Toshiba Corp | Applied paint dryer and applied paint drying method |
| CN1409809A (en) * | 2000-11-20 | 2003-04-09 | 罗建华 | Multifunctional microwave device |
| CN1646238A (en) * | 2002-04-19 | 2005-07-27 | 杜尔系统有限公司 | Method and device for hardening a coating |
| CN2638002Y (en) * | 2003-05-26 | 2004-09-01 | 杭州五源材料发展有限公司 | Solidification furnace with high infrared radiation heating paincoat |
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| CN1721085A (en) * | 2004-07-17 | 2006-01-18 | 任连杰 | Method for making adhesion force of metal surface coating into metal surface-layer binding force |
| CN1966457A (en) * | 2005-11-16 | 2007-05-23 | 勾学军 | Honeycomb ceramic continuous finalizing drying method and its dedicated apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109936883A (en) * | 2017-12-15 | 2019-06-25 | 佛山市顺德区美的电热电器制造有限公司 | Method for heating and controlling, device, heating utensil and computer readable storage medium |
| CN109936883B (en) * | 2017-12-15 | 2021-10-26 | 佛山市顺德区美的电热电器制造有限公司 | Heating control method, heating control device, heating appliance and computer-readable storage medium |
| CN109820007A (en) * | 2018-11-02 | 2019-05-31 | 广东丰森第五能源科技有限公司 | A kind of automatic dough mixing machine |
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Application publication date: 20130102 |