WO2015000377A1 - 一种电磁加热装置及电磁供热设备 - Google Patents

一种电磁加热装置及电磁供热设备 Download PDF

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Publication number
WO2015000377A1
WO2015000377A1 PCT/CN2014/080781 CN2014080781W WO2015000377A1 WO 2015000377 A1 WO2015000377 A1 WO 2015000377A1 CN 2014080781 W CN2014080781 W CN 2014080781W WO 2015000377 A1 WO2015000377 A1 WO 2015000377A1
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Prior art keywords
iron
iron plate
electromagnetic heating
heat
heating device
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PCT/CN2014/080781
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English (en)
French (fr)
Inventor
李民华
Original Assignee
吴会霞
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Publication of WO2015000377A1 publication Critical patent/WO2015000377A1/zh

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/105—Induction heating apparatus, other than furnaces, for specific applications using a susceptor
    • H05B6/108—Induction heating apparatus, other than furnaces, for specific applications using a susceptor for heating a fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/101—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/002—Air heaters using electric energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H2250/00—Electrical heat generating means
    • F24H2250/08—Induction

Definitions

  • Electromagnetic heating device and electromagnetic heating device are Electromagnetic heating device and electromagnetic heating device
  • the invention relates to the field of electromagnetic heating, in particular to an electromagnetic heating device and an electromagnetic heating device. Background technique
  • Electromagnetic induction technology is developed on the basis of Faraday's law of induction and is an application form of Faraday's induction law.
  • the principle of electromagnetic heating is to generate an alternating magnetic field through the components of the electronic circuit board.
  • the surface of the container cuts the alternating magnetic field lines and generates alternating current (ie, eddy current) in the metal portion at the bottom of the container.
  • the iron atoms at the bottom of the container are moved at a high speed and irregularly, and the atoms collide with each other and rub to generate heat energy, thereby heating the articles. Because the iron container itself generates heat, the thermal conversion rate is particularly high, up to 95%.
  • the induction cooker and electromagnetic cooker used in daily use are all electromagnetic heating technologies.
  • electromagnetic heating technology is widely used in the production of plastics, rubber products, chemicals, pharmaceuticals, etc., such as plastic wire drawing, blown film, granulation, injection molding, etc.; cable production extruder, Heating by extrusion machine; heating of thermoplastic plastic pipe, profile production, etc.; pipe heating, constant temperature control heating, etc.
  • the existing electromagnetic heating device is mostly in direct contact with the tangible object, and the heating effect is good; the heat exchange with the fluid is insufficient, and the heating effect is poor. Summary of the invention
  • the present invention adopts the following technical solutions.
  • An electromagnetic heating device comprising a positive and negative electrode, an electromagnetic controller, an electromagnetic coil, an insulating insulating mat, an iron square tube and a heat conducting fin; the heat conducting fin is embedded in the iron square tube, the partition a thermal insulating mat is wrapped outside the iron square tube, the electromagnetic coil is wound around the thermal insulating insulating layer; the heat conducting fin is provided with a plurality of rows of bent pieces; and the iron square tube is composed of 4 pieces a rectangular iron plate, the first iron plate is opposite to the second iron plate, the third iron plate is opposite to the fourth iron plate, and at least two opposite iron plates are opened in multiple rows a card hole; a side of the heat-conducting fin that is fitted to the iron plate is a concave-convex side, and the concave-convex side is composed of a protruding portion and a concave portion, and the protruding portion is embedded in the card hole.
  • the iron square tube is composed of four rectangular iron plates, the first iron plate and the second iron plate are wide rectangular iron plates, and the third iron plate and the fourth iron plate are narrow rectangular iron plates, each iron A plurality of rows of card holes are formed in the plate; the heat conducting fins which are engaged with the first iron plate and the second iron plate are large heat conducting fins, and the heat conducting fins which are fitted with the third iron plate or the fourth iron plate have small heat conduction Fin
  • the large heat-conducting fin has a rectangular shape, and a side of the first iron plate and the second iron plate is a concave-convex side, and the protruding portion is embedded in the opening, and the large heat-conducting fin is provided with a plurality of Row of bent pieces;
  • the small heat conduction fin includes two side walls and a connecting portion, and the two side walls are connected by a connecting portion; the side of the side wall that is fitted with the third iron plate or the fourth iron plate is a concave side, and The protruding portion is embedded in the hole of the third iron plate or the fourth iron plate, and each side wall is provided with at least one row of bending pieces.
  • the large heat conduction fin is composed of two half fins, each side of the half fin being fitted with the first iron plate or the second iron plate is a concave side, and the side opposite to the concave side is a straight side. At least one row of bent pieces is provided on each of the half fins.
  • the bending pieces on the same large heat transfer fin are bent in the same direction; the bent pieces on the same small heat transfer fin are bent outward, and are mirror-symmetrical along the center line of the joint.
  • the preparation method of the electromagnetic heating device comprises the following steps: 1) cutting the iron plate into a wide rectangle and a narrow rectangle, and vacating the card hole at a suitable position of a wide rectangle or a wide rectangle and a narrow rectangle; 2) copper The sheet is made of heat-conducting fins, and the bending piece is punched out on the copper sheet, and the long side is made into a concave edge; 3) the protruding portion of the heat-conducting fin is sequentially inserted into the hole of the iron plate, and the filling is full Welding; 4) welding two wide rectangular iron plates and narrow rectangular iron plates of the fitting heat-conducting fins into an iron square tube, the narrow rectangular iron plate being fitted or not fitting heat-conducting fins; 5) being made of iron The square tube is wrapped with an insulating insulating cushion; 6) The electromagnetic heating device is formed by winding an electromagnetic coil outside the insulating insulating cushion.
  • An electromagnetic heating device is composed of a fluid generating or storing device, a fluid inlet pipe, a fluid outlet pipe and the above electromagnetic heating device, wherein two ends of the iron square pipe of the electromagnetic heating device are respectively connected with the fluid inlet pipe and the fluid outlet pipe, The other end of the fluid inlet tube is connected to a fluid generating or storage device.
  • the iron square tube of the electromagnetic heating device is provided with an iron separator, and the iron square tube is divided into a plurality of electromagnetic heating units; the electromagnetic heating device further comprises a rotary tube, and the rotary tube is used for connecting adjacent The same end of the electromagnetic heating unit is rotated.
  • the bending direction of the bent piece in each fluid passage is the same as the direction of fluid flow.
  • the electromagnetic heating device is prepared by welding a fluid inlet pipe and a fluid outlet pipe at both ends of the iron square pipe of the electromagnetic heating device, or welding a fluid inlet pipe, a fluid outlet pipe or a rotating body at both ends of the electromagnetic heating unit.
  • the tube is made into an electromagnetic heating device.
  • the electromagnetic heating device of the present invention and the heat-conducting fin of the electromagnetic heating device are connected to the iron plate, and the heat-conducting fin has the same temperature as the iron plate. Moreover, the heat-conducting fins are provided with bending pieces, which can increase the number of collisions between the fluid and the heat-conducting fins, increase the heat exchange time, and increase the temperature of the output fluid.
  • the electromagnetic heating device of the present invention may contain a plurality of gas passages for heating the fluid multiple times.
  • Figure 1 is a view of a certain embodiment of the electromagnetic heating device of the present invention
  • FIG. 2 is a schematic structural view of an embodiment of an iron square tube fitting a heat transfer fin
  • FIG. 3 is a schematic structural view of an embodiment of a large heat transfer fin 4A
  • FIG. 4 is a schematic structural view of another embodiment of the large heat conduction fin 4A;
  • Figure 5 is a side view of the half fin 4a
  • Figure 6 is a perspective view of the half fin 4a
  • FIG. 7 is a schematic structural view of an embodiment of an electromagnetic heating device of the present invention.
  • Figure 8 is a schematic illustration of the flow direction of fluid in the electromagnetic heating apparatus of the present invention.
  • the principle of the electromagnetic heating device is to use the electromagnetic controller to rectify the alternating current into direct current, and then convert the direct current into high frequency and high voltage with a frequency of 20KHz or higher.
  • the high-frequency high-voltage current flowing at high speed flows through the electromagnetic coil to generate a high-speed change core.
  • the magnetic field changes, when the magnetic field inside the magnetic field passes through the iron plate, the iron atom moves at a high speed, and the iron atoms rub against each other to cause the iron plate itself to heat at a high speed, and the object is heated by the hot iron plate.
  • the general electromagnetic heating device only heats the solid directly and cannot be used for heating the fluid. Even if it is used for fluid heating, the contact temperature and the contact time are limited due to the high fluid passing speed, and the high temperature cannot be reached after heating.
  • the present invention uses a heat-conducting fin to be connected to an iron plate; therefore, the heat-conducting fin has the same temperature as the iron plate. Moreover, the heat-conducting fins are provided with bending pieces, which can increase the number of collisions between the fluid and the heat-conducting fins, increase the heat exchange time, and increase the temperature of the output fluid.
  • the electromagnetic heating device of the present invention comprises a positive and negative electrode, an electromagnetic controller, an electromagnetic coil 1, an insulating insulating cushion layer 2, an iron square tube 3, and a heat conducting fin 4; 4 embedded in the iron square tube 3, the heat insulating insulating layer 2 is wrapped around the iron square tube 3, and the electromagnetic coil 1 is wound around the heat insulating insulating layer 2.
  • the iron square tube 3 is composed of four rectangular iron plates, and the first iron plate 31 and the second iron plate 32 are opposite and identical, and each is a wide rectangular iron plate; the third iron plate 33 and the first The four iron plates 34 are opposite and identical, and are all narrow rectangular iron plates.
  • the first iron plate 31 has a plurality of rows of hole holes 35, and each of the rows has a plurality of card holes 35.
  • a plurality of rows of card holes 35 are also formed in the second iron plate 32 which is identical to the first iron plate 31.
  • the heat transfer fins 4 are elongated copper sheets that match the iron square tubes 3.
  • the side where the heat transfer fin 4 is fitted to the iron plate is the uneven side 41 which is composed of the convex portion 411 and the concave portion 412.
  • the heat transfer fins 4 are provided with a plurality of rows of bent pieces 42.
  • the heat-dissipating fins 4 are the large heat-dissipating fins 4A of FIG. 1 , and both long sides thereof are concave-convex edges 41.
  • the projection 411 on one of the concave and convex edges 41 is embedded in the hole 35 of the first iron plate, and the projection 411 on the other concave and convex edge 41 is embedded in the hole 35 of the second iron plate.
  • the recessed portion 412 It is in contact with the inner wall of the iron plate between the adjacent card holes 35.
  • Each of the large heat transfer fins 4A has at least two rows of bent pieces 42 which are bent toward the same side of the large heat transfer fins 4A.
  • the side on which the bent piece 42 is bent is the front surface of the large heat conduction fin 4A, and the other side is the back surface of the large heat conduction fin 4A.
  • Adjacent 2 large heat transfer fins 4A The same faces are oppositely disposed, that is, the back is opposite to the back, or the front is opposite to the front.
  • the large heat conduction fin 4A may be composed of two half fins.
  • Each of the half fins has only one long side with a concave side 41 and the other long side a straight side.
  • the protruding portion 411 on the concave side 41 of the first half fin 4a is fitted into the hole 35 of the first iron plate, and the protruding portion 411 on the concave side 41 of the second half fin 4b is embedded in the second iron.
  • the straight sides of the two half fins are just in contact.
  • at least one row of card holes 35 is formed in each of the half fins.
  • the bent piece 42 is a small rectangular piece which is formed by being punched on the heat-conducting fin 4 and separated from the heat-conducting fin 4 and connected to the heat-conducting fin 4 and bent in a certain direction.
  • the opening formed on the heat transfer fin by the preparation of the bent piece is the bent opening 43.
  • the one side of the bent piece 42 is the front side of the half fin 4a, and the other side is the back side of the half fin 4a.
  • the small heat-dissipating fin 4B includes two side walls and a connecting portion, the side wall is similar to the half-fin, and the two side walls are connected by a connecting portion, which is generally "U"-shaped; the side wall and the third iron plate 33 or the side of the fourth iron plate 34 is a concave side, and the protruding portion is embedded in the hole 35 of the third iron plate 33 or the fourth iron plate 34, and at least one row of bent pieces is arranged on each side wall. 42.
  • the bent piece 42 on the same small heat transfer fin 4B is bent outward, and is mirror-symmetrical along the center line of the joint.
  • the electromagnetic heating device of the invention is prepared by the following method: 1) cutting the iron plate into a wide rectangular shape and a narrow rectangular shape, and hollowing out the card hole 35 at a suitable position of a wide rectangular shape or a wide rectangular shape and a narrow rectangular shape; 2) making the copper sheet heat-conducting
  • the fin 4 is stamped on the copper sheet, and the long side is formed into the concave and convex edge 41; 3) the protruding portion 411 of the heat-conductive fin 4 is sequentially inserted into the hole 35 of the iron plate, and then filled in Fully welded, not leaking; 4) Will be fitted with heat conduction
  • the two wide rectangular iron plates of the fins 4 and the narrow rectangular iron plates are welded into an iron square tube 3, and the narrow rectangular iron plates can be fitted with the heat transfer fins 4; 5) the outer side of the iron square tube 3 is insulated and insulated.
  • the underlayer 2; 6) is wound around the insulating insulating mat 2 to form the electromagnetic heating device.
  • the electromagnetic heating device of the invention adopts the method of induction heating of the high-frequency electromagnetic coil, it is more energy-saving than the use of coal or gas; and the generated heat cannot be lost to the surrounding space due to the isolation of the thermal insulation insulating layer.
  • the heat is quickly exported to the iron square tube outlet, which improves the heat energy utilization rate.
  • the electromagnetic heating device is composed of a fluid generating or storing device, a fluid inlet pipe 5, a fluid outlet pipe 6, and the above electromagnetic heating device, and two ends of the iron square pipe 3 of the electromagnetic heating device are respectively.
  • the fluid inlet tube 5 is connected to the fluid outlet tube 6, and the other end of the fluid inlet tube 5 is connected to a fluid generating or storage device.
  • the iron square tube 3 as a whole is a fluid passage 38.
  • the fluid generating or storing device is for providing a fluid, and a common fluid generating or storing device has a fan, a water tank, and the like, and supplies a fluid such as a gas and a liquid, respectively.
  • the iron square tube 3 of the electromagnetic heating device is provided with an iron separator 36, and the iron square tube 3 is divided into a plurality of electromagnetic heating units 37, and each electromagnetic heating unit is It is a fluid passage 38; the end of the electromagnetic heating unit connected to the fluid inlet pipe 5 is a fluid inlet end, the end of the electromagnetic heating unit connected to the fluid outlet pipe 6 is a fluid outlet end, and the other end of the electromagnetic heating unit 37 is a rotary end.
  • the electromagnetic heating device further includes a rotary pipe 7 for connecting the same-end rotary end portion of the adjacent electromagnetic heating unit 37.
  • the adjacent two large heat transfer fins 4A are opposed to each other, that is, the back surface is opposed to the back surface, or the front surface is opposed to the front surface.
  • the bending direction of the bent piece in each fluid passage 38 is the same as the direction of fluid flow. Fluid enters fluid passage 38 from fluid inlet tube 5, and fluid passes through the spacing of adjacent thermally conductive fins 4. Since the bent piece 42 is bent toward the front surface of the large heat transfer fin 4A, the lower portion of the bent piece 42 is the bent opening 43.
  • the arrows in Figure 8 indicate the flow direction of the fluid.
  • the fluid is inevitably or directly in the process of flowing forward, or passes through the bent opening 43 and hits the bent piece 42, the heat-conducting fin 4, the iron partition 36 or the iron square tube 3 to change the flow direction.
  • the fluid passes through the fluid passage.
  • the process by which fluid passes through small thermally conductive fins is similar.
  • the fluid is heated for each collision. Since the iron square tube has a plurality of heat-conducting fins, each heat-conducting fin has a plurality of rows of bent sheets, and each row of bent sheets has a plurality of bent sheets, so after a plurality of heating, the final fluid temperature can reach 250. Above °C. Fluid per By multiplying the fluid passage once, the number of collisions with the bent piece is doubled, which can increase the final fluid temperature and shorten the heating time.
  • the electromagnetic heating device is prepared by welding a fluid inlet pipe and a fluid outlet pipe at both ends of the iron square tube of the electromagnetic heating device, or welding a fluid inlet pipe, a fluid outlet pipe and a rotation at both ends of the electromagnetic heating unit.
  • the tube is made into an electromagnetic heating device.
  • the electromagnetic heating device of the present invention can increase or decrease the number of electromagnetic heating units according to production requirements; the invention is convenient for disassembly and assembly, and can also be directly installed on existing electromagnetic heating devices.
  • the electromagnetic heating device of the invention can effectively increase the final temperature of the fluid by heating the fluid multiple times; moreover, the electromagnetic heating device of the invention is simple and compact, and saves space.
  • the fluid heated by the electromagnetic heating device of the invention can be used for heating in the baking room and the oven, and the energy-saving technology heating efficiency of the baking room, the oven hot air and hot gas mechanical equipment is increased to over 95%, and the electric energy can be saved by 40%- 60%, fully reflecting the advantages of energy saving, reducing the energy and fuel costs of the processing industry, improving production efficiency, and improving the working environment of the workshop.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
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Abstract

一种电磁加热装置及其制备方法、以及电磁供热设备及其制备方法。电磁加热装置包括正负电极、电磁控制器、电磁线圈（1）、隔热绝缘垫层（2）、铁制方管（3）、导热鰭片（4）；导热鰭片（4）嵌在铁制方管（3）内，隔热绝缘垫层（2）包裹在铁制方管（3）外，电磁线圈（1）缠绕在隔热绝缘垫层（2）外；导热鰭片（4）上设有数排弯折片（42）。铁制方管（3）由4块矩形铁板组成，第一铁板（31）与第二铁板（32）相对，第三铁板（33）与第四铁板（34）相对，至少有两块相对的铁板上开有多排卡孔（35）；导热鰭片（4）与铁板嵌合的边缘为凹凸边（41），凹凸边（41）由凸出部（411）和凹陷部（412）组成，凸出部（411）嵌在卡孔（35）中。电磁加热装置的导热鰭片（4）上设有弯折片（42），能够增加流体与导热鰭片（4）的碰撞次数，增加热交换的时间，提高输出流体的温度。

Description

一种电磁加热装置及电磁供热设备 技术领域
本发明涉及电磁加热领域， 尤其涉及一种电磁加热装置及电磁供热设备。 背景技术
电磁感应技术是在法拉第感应定律的基础上发展起来的， 是法拉第感应定 律的一种应用形式。 电磁加热的原理是通过电子线路板组成部分产生交变磁 场、 当用含铁质容器放置上面时， 容器表面即切割交变磁力线而在容器底部金 属部分产生交变的电流（即涡流）， 涡流使容器底部的铁原子高速无规则运动， 原子互相碰撞、 摩擦而产生热能， 从而起到加热物品的效果。 因为是铁制容器 自身发热， 所以热转化率特别高， 最高可达到 95%。
目前， 日常使用的电磁炉， 电磁灶都是采用的电磁加热技术。 除此之外， 在工业上， 电磁加热技术广泛应用于塑料、 橡胶制品、 化工、 医药等行业的生 产领域， 如塑料拉丝、 吹膜、 造粒、 注塑等的加热； 电缆生产挤出机， 挤塑机 等加热； 热塑性塑胶管材、 型材生产等加热； 管道伴热、 恒温控制加热等。 但 是现有电磁加热装置多与有形物体直接接触， 加热效果好； 与流体接触换热不 充分， 加热效果差。 发明内容
有鉴于此， 有必要针对电磁加热装置对流体加热效果差的问题， 提供一种 电磁加热装置。
为了实现上述目的， 本发明采用如下技术方案。
一种电磁加热装置， 包括正负电极、 电磁控制器、 电磁线圈、 隔热绝缘垫 层、 铁制方管和导热鳍片； 所述导热鳍片嵌在所述铁制方管内， 所述隔热绝缘 垫层包裹在所述铁制方管外， 所述电磁线圈缠绕在所述隔热绝缘垫层外； 所述 导热鳍片上设有数排弯折片； 所述铁制方管由 4块矩形铁板组成， 第一铁板与 第二铁板相对， 第三铁板与第四铁板相对， 至少有两块相对的铁板上开有多排 卡孔； 所述导热鳍片与所述铁板嵌合的边为凹凸边， 所述凹凸边由凸出部和凹 陷部组成， 所述凸出部嵌在所述卡孔中。
优选地， 所述铁制方管由 4块矩形铁板组成， 第一铁板与第二铁板为宽矩 形铁板， 第三铁板与第四铁板为窄矩形铁板， 每块铁板上开有多排卡孔； 与第 —铁板和第二铁板嵌合的导热鳍片为大导热鳍片， 与第三铁板或第四铁板嵌合 的导热鳍片为小导热鳍片；
所述大导热鳍片为矩形， 其与第一铁板和第二铁板嵌合的边为凹凸边， 所 述凸出部嵌在所述开孔中， 所述大导热鳍片上设有多排弯折片；
所述小导热鳍片包括两个侧壁和一个连接部， 两个侧壁通过连接部相连； 所述侧壁与所述第三铁板或第四铁板嵌合的边为凹凸边， 其凸出部嵌在第三铁 板或第四铁板的卡孔中， 每个侧壁上至少设有一排弯折片。
更优选地， 所述大导热鳍片由 2个半鳍片组成， 每个半鳍片与第一铁板或 第二铁板嵌合的边为凹凸边， 与凹凸边相对的边为直边， 每个半鳍片上至少设 有一排弯折片。
进一歩优选地， 同一大导热鳍片上的弯折片的弯折方向相同； 同一小导热 鳍片上的弯折片向外弯折， 沿连接部的中线镜像对称。
所述的电磁加热装置的制备方法， 包括以下歩骤： 1 ) 将铁板切成宽矩形和 窄矩形， 在宽矩形或宽矩形和窄矩形的适当位置篓空出卡孔； 2) 将铜片制成导 热鳍片， 在铜片上冲压出弯折片， 并将长边制成凹凸边； 3 ) 将导热鳍片的凸出 部依序插进铁板的卡孔中后， 填缝满焊； 4) 将嵌合导热鳍片的两块宽矩形铁板 与窄矩形铁板焊接成铁制方管， 所述窄矩形铁板嵌合或不嵌合导热鳍片； 5 ) 在 铁制方管外包裹隔热绝缘垫层； 6)在隔热绝缘垫层外缠绕电磁线圈即制成所述 电磁加热装置。
一种电磁供热设备， 由流体生成或储存设备、 流体入管、 流体出管和上述 电磁加热装置组成， 所述电磁加热装置的铁制方管的两端分别与流体入管和流 体出管相连， 流体入管的另一端与流体生成或储存设备相连。
优选地， 所述电磁加热装置的铁制方管内设有铁制隔板， 将铁制方管分割 成多个电磁加热单元； 所述电磁供热设备还包括回转管， 回转管用于连接相邻 电磁加热单元的同端回转端部。
更优选地， 每个流体通道内的弯折片的弯折方向与流体流动方向相同。 所述电磁供热设备的制备方法为在所述电磁加热装置的铁制方管两端焊上 流体入管与流体出管， 或在电磁加热单元的两端焊上流体入管、 流体出管或回 转管， 即制成电磁供热设备。
本发明电磁加热装置及电磁供热设备的导热鳍片与铁板相连， 导热鳍片与 铁板具有相同温度。 而且， 导热鳍片上设有弯折片， 能够增加流体与导热鳍片 的碰撞次数， 增加热交换的时间， 提高输出流体的温度。 本发明电磁供热设备 可以含有多个气体通道， 可对流体多次回转加热。 附图说明
图 1 是本发明电磁加热装置的某实施例的结 1小
图 2 是嵌合导热鳍片的铁制方管的某实施例的结构示意图;
图 3 是大导热鳍片 4A的某实施例的结构示意图；
图 4 是大导热鳍片 4A的另一实施例的结构示意图；
图 5 是半鳍片 4a的侧视图；
图 6 是半鳍片 4a的立体图；
图 7 是本发明电磁供热设备的某实施例的结构示意图；
图 8 是流体在本发明电磁供热设备中流动方向的示意图。
附图中各附图标记分别代表：
1 电磁线圈， 2 隔热绝缘垫层， 4 导热鳍片， 31 第一铁板， 32第二铁板， 34第四铁板， 35 卡孔， 36铁制隔板， 37 电磁加热单元， 38 气体通道， 41 凹凸边， 42弯折片， 43 弯折开口， 411 凸出部， 412 凹陷部， 4A大导热鳍片， 4a第一半鳍片， 4b 第二半鳍片， 4B 小导热鳍片， 5 流体入管， 6 流体出管， 7 回转管。 具体实施方式 为了更好的理解本发明， 下面结合附图和具体实施例作进一歩说明。
电磁加热装置的原理是利用电磁控制器将交流电整流变成直流， 再将直流 电转换成频率为 20KHz以上的高频高压电， 高速变化的高频高压电流流经电磁 线圈会产生高速变化的核变磁场， 当磁场内侧磁力线通过铁板时导致铁原子高 速运动， 铁原子相互摩擦使铁板本身自行高速发热， 利用发热的铁板对物体进 行加热。 一般的电磁加热装置只对固体直接进行加热， 不能用于对流体的加热; 即使用于流体加热， 由于流体通过速度快， 接触面积和接触时间有限， 加热后 也无法达到较高的温度。
为了克服上述问题， 本发明采用导热鳍片与铁板相连； 因此， 导热鳍片与 铁板具有相同温度。 而且， 导热鳍片上设有弯折片， 能够增加流体与导热鳍片 的碰撞次数， 增加热交换的时间， 提高输出流体的温度。
如图 1 所示， 本发明所述电磁加热装置， 包括正负电极、 电磁控制器、 电 磁线圈 1、 隔热绝缘垫层 2、 铁制方管 3、 导热鳍片 4; 所述导热鳍片 4嵌在所 述铁制方管内 3， 所述隔热绝缘垫层 2包裹在所述铁制方管 3外， 所述电磁线圈 1缠绕在所述隔热绝缘垫层 2外。
如图 2所示， 所述铁制方管 3由 4块矩形铁板组成， 第一铁板 31与第二铁 板 32相对且相同， 均为宽矩形铁板； 第三铁板 33与第四铁板 34相对且相同， 均为窄矩形铁板。 所述第一铁板 31开有多排卡孔 35， 每排有多个卡孔 35。 同 理， 与第一铁板 31相同的第二铁板 32上也开有多排卡孔 35。
如图 3所示， 所述导热鳍片 4为与所述铁制方管 3相匹配的细长铜片。 所 述导热鳍片 4与铁板嵌合的边为凹凸边 41，所述凹凸边 41由凸出部 411和凹陷 部 412组成。 所述导热鳍片 4上设有多排弯折片 42。
如图 3所示， 所述导热鳍片 4为图 1中的大导热鳍片 4A, 其两条长边均为 凹凸边 41。 一条凹凸边 41上的凸出部 411嵌入第一铁板上的卡孔 35中， 另一 条凹凸边 41上的凸出部 411嵌入第二铁板上的卡孔 35中， 所述凹陷部 412与 相邻卡孔 35间的铁板内壁相接触。 每个大导热鳍片 4A至少有 2排弯折片 42， 所述弯折片 42向大导热鳍片 4A的同一侧弯折。弯折片 42弯向的一侧为大导热 鳍片 4A的正面， 另一面为大导热鳍片 4A的背面。 相邻 2个大导热鳍片 4A的 相同面相对设置， 即背面与背面相对， 或正面与正面相对。
因导热鳍片 4为铜片， 有一定的硬度， 给组装造成了一定的困难。 为了方 便组装， 如图 4所示， 所述大导热鳍片 4A可以由 2个半鳍片组成。 每个半鳍片 仅有一条长边为凹凸边 41， 另一条长边为直边。 将第一半鳍片 4a的凹凸边 41 上的凸出部 411嵌入第一铁板上的卡孔 35中， 将第二半鳍片 4b的凹凸边 41上 的凸出部 411嵌入第二铁板上相应位置的卡孔 35中， 当铁制方管组装完成后， 上述两个半鳍片的直边正好相接触。 优选地， 每个半鳍片上至少开有一排卡孔 35。
为了更详细的描述弯折片的结构， 现以半鳍片为例进行说明。 如图 5所示， 所述弯折片 42是在导热鳍片 4上冲压而成的三边与导热鳍片 4分离， 一边与导 热鳍片 4相连的， 向一定方向弯折的小矩形片。 如图 6所示， 在导热鳍片上因 制备弯折片而形成的开口为弯折开口 43。 弯折片 42弯向的一侧为半鳍片 4a的 正面， 另一面为半鳍片 4a的背面。
当只有第一铁板 31和第二铁板 32上装有导热鳍片 4时， 只有第一铁板 31 和第二铁板 32的热能能够有效的导出， 铁制方管的第三铁板 33和第四铁板 34 上的热能不能有效导出， 造成了热能的浪费。
当铁制方管 3的 4个铁板都装有导热鳍片时， 热交换的效率更高。 为此， 优选在第三铁板 33与第四铁板 34上也分别开有多排卡孔 35， 并通过所述卡孔 35与导热鳍片 4相连， 如图 2所示。 与第三铁板 33、 第四铁板 34嵌合的导热 鳍片 4为小导热鳍片。 小导热鳍片 4B包括两个侧壁和一个连接部， 侧壁与半鳍 片相似， 两个侧壁通过连接部相连， 整体呈 "U"型； 所述侧壁与所述第三铁板 33或第四铁板 34嵌合的边为凹凸边， 其凸出部嵌在第三铁板 33或第四铁板 34 的卡孔 35中， 每个侧壁上至少设有一排弯折片 42。 同一小导热鳍片 4B上的弯 折片 42向外弯折， 沿连接部的中线镜像对称。
本发明电磁加热装置通过以下方法制备， 1 ) 将铁板切成宽矩形和窄矩形， 在宽矩形或宽矩形和窄矩形的适当位置篓空出卡孔 35 ; 2)将铜片制成导热鳍片 4， 在铜片上冲压出弯折片 42， 并将长边制成凹凸边 41 ; 3 ) 将导热鳍片 4的凸 出部 411依序插进铁板的卡孔 35中后， 填缝满焊， 不可漏风； 4) 将嵌合导热 鳍片 4的两块宽矩形铁板与窄矩形铁板焊接成铁制方管 3，所述窄矩形铁板可以 嵌合导热鳍片 4; 5 ) 在铁制方管 3外包裹隔热绝缘垫层 2; 6 ) 在隔热绝缘垫层 2外缠绕电磁线圈 1即制成所述电磁加热装置。
由于本发明电磁加热装置采用了高频电磁线圈感应加热的方式， 与使用煤 或燃气相比， 更节省能源； 且所产生的热量由于受到隔热绝缘垫层的隔离， 无 法散失到周围空间， 使热量均向铁制方管出口快速导出， 提高了热能利用率。
本发明的另一目的是提供一种电磁供热设备。 如图 7所示， 所述电磁供热 设备由流体生成或储存设备、流体入管 5、流体出管 6和上述电磁加热装置组成， 所述电磁加热装置的铁制方管 3的两端分别与流体入管 5和流体出管 6相连， 流体入管 5的另一端与流体生成或储存设备相连。 此时， 铁制方管 3整体即为 一个流体通道 38。 所述流体生成或储存设备用于提供流体， 常用的流体生成或 储存设备有风机、 储水箱等， 分别提供气体和液体等流体。
优选地， 如图 7所示， 所述电磁加热装置的铁制方管 3内设有铁制隔板 36， 将铁制方管 3分割成多个电磁加热单元 37， 每个电磁加热单元即为一个流体通 道 38; 与流体入管 5连接的电磁加热单元端部为流体入口端， 与流体出管 6连 接的电磁加热单元端部为流体出口端，电磁加热单元 37的其他端部为回转端部； 所述电磁供热设备还包括回转管 7， 回转管 7用于连接相邻电磁加热单元 37的 同端回转端部。
如图 8所示， 在流体通道 38内， 相邻 2个大导热鳍片 4A相同面相对， 即 或背面与背面相对， 或正面与正面相对。 每个流体通道 38内的弯折片的弯折方 向与流体流动方向相同。 流体从流体入管 5进入流体通道 38中， 流体从相邻导 热鳍片 4的间隔中通过。 因弯折片 42向大导热鳍片 4A正面弯折， 弯折片 42下 部即为弯折开口 43。 图 8中箭头表示流体的流动方向。 流体在向前流动的过程 中必然会或直接， 或从弯折开口 43穿过后碰到弯折片 42、 导热鳍片 4、 铁制隔 板 36或铁制方管 3而改变流动方向， 经过多次碰撞热交换后， 流体才通过流体 通道。 流体通过小导热鳍片的过程与此相似。 每次碰撞都对流体进行加热。 因 铁制方管中具有多个导热鳍片， 每个导热鳍片上具有多排弯折片， 每排弯折片 有多个弯折片， 因此经过多次加热后， 最终流体温度可达到 250°C以上。 流体每 多通过一次流体通道， 与弯折片碰撞的次数加倍， 可以提高最终流体温度， 缩 短加热时间。
所述电磁供热设备的制备方法为在所述电磁加热装置的铁制方管两端焊上 流体入管与流体出管， 或在电磁加热单元的两端焊上流体入管、 流体出管和回 转管， 即制成电磁供热设备。
为了达到更好的加热效果， 本发明电磁供热设备， 可根据生产需要增加或 减少电磁加热单元的个数； 该发明拆装方便， 也可对现有电磁加热设备直接加 装。 本发明电磁供热设备， 通过对流体的多次回转加热， 能够有效提高流体的 最终温度； 而且， 本发明电磁供热设备简便小巧、 节省占用空间。 经过本发明 电磁供热设备加热后的流体， 可以用于烤房、 烤箱的加热， 使烤房、 烤箱热风 热气机械设备供暖等节能科技发热效率提高到 95%以上， 能节约电能达 40%-60% , 充分体现出节能优势， 降低加工行业电能及 燃料成本， 提高了生产 效率， 也改善了车间的工作环境。
以上所述实施例仅表达了本发明的几种实施方式， 其描述较为具体和详 细， 但并不能因此而理解为对本发明专利范围的限制。 应当指出的是， 对于本 领域的普通技术人员来说， 在不脱离本发明构思的前提下， 还可以做出若干变 形和改进， 这些都属于本发明的保护范围。 因此， 本发明专利的保护范围应以 所附权利要求为准。

Claims

权 利 要 求 书
1、 一种电磁加热装置， 其特征在于： 包括正负电极、 电磁控制器、 电磁线 圈、 隔热绝缘垫层、 铁制方管、 导热鳍片； 所述导热鳍片嵌在所述铁制方管内， 所述隔热绝缘垫层包裹在所述铁制方管外， 所述电磁线圈缠绕在所述隔热绝缘 垫层外； 所述导热鳍片上设有数排弯折片；
所述铁制方管由 4块矩形铁板组成， 第一铁板与第二铁板相对， 第三铁板 与第四铁板相对， 至少有两块相对的铁板上开有多排卡孔；
所述导热鳍片与所述铁板嵌合的边为凹凸边， 所述凹凸边由凸出部和凹陷 部组成， 所述凸出部嵌在所述卡孔中。
2、 根据权利要求 1所述的电磁加热装置， 其特征在于： 所述铁制方管由 4 块矩形铁板组成， 第一铁板与第二铁板为宽矩形铁板， 第三铁板与第四铁板为 窄矩形铁板， 每块铁板上开有多排卡孔；
与第一铁板与第二铁板嵌合的导热鳍片为大导热鳍片， 与第三铁板与第四 铁板嵌合的导热鳍片为小导热鳍片；
所述大导热鳍片为矩形， 其与第一铁板和第二铁板嵌合的边为凹凸边， 所 述凸出部嵌在所述开孔中， 所述大导热鳍片上设有多排弯折片；
所述小导热鳍片包括两个侧壁和一个连接部， 两个侧壁通过连接部相连； 所述侧壁与所述第三铁板或第四铁板嵌合的边为凹凸边， 其凸出部嵌在第三铁 板或第四铁板的卡孔中， 每个侧壁上至少设有一排弯折片。
3、 根据权利要求 1或 2所述的电磁加热装置， 其特征在于： 所述大导热鳍 片由 2个半鳍片组成， 每个半鳍片与第一铁板或第二铁板嵌合的边为凹凸边， 与凹凸边相对的边为直边， 每个半鳍片上至少设有一排弯折片。
4、 根据权利要求 1或 2所述的电磁加热装置， 其特征在于： 同一大导热鳍 片上的弯折片的弯折方向相同；
同一小导热鳍片上的弯折片向外弯折， 沿连接部的中线镜像对称。
5、一种权利要求 1-4任一项所述的电磁加热装置的制备方法， 其特征在于： 包括以下歩骤：
1 )将铁板切成宽矩形和窄矩形， 在宽矩形或宽矩形和窄矩形的适当位置篓 空出卡孔； 2) 将铜片制成导热鳍片， 在铜片上冲压出弯折片， 并将长边制成凹凸边；
3 ) 将导热鳍片的凸出部依序插进铁板的卡孔中后， 填缝满焊；
4)将嵌合导热鳍片的两块宽矩形铁板与窄矩形铁板焊接成铁制方管， 所述 窄矩形铁板嵌合或不嵌合导热鳍片；
5 ) 在铁制方管外包裹隔热绝缘垫层；
6) 在隔热绝缘垫层外缠绕电磁线圈即制成所述电磁加热装置。
6、 一种电磁供热设备， 其特征在于： 由流体生成或储存设备、 流体入管、 流体出管和权利要求 1-5任一项所述的电磁加热装置组成，所述电磁加热装置的 铁制方管的两端分别与流体入管和流体出管相连， 流体入管的另一端与流体生 成或储存设备相连。
7、 根据权利要求 6所述的电磁供热设备， 其特征在于： 所述电磁加热装置 的铁制方管内设有铁制隔板， 将铁制方管分割成多个电磁加热单元； 所述电磁 供热设备还包括回转管， 回转管用于连接相邻电磁加热单元的同端回转端部。
8、 根据权利要求 7所述的电磁供热设备， 其特征在于： 每个气体通道内的 弯折片的弯折方向与气体流动方向相同。
9、 权利要求 6或 7所述电磁供热设备的制备方法， 其他特征在于： 在所述电磁加热装置的铁制方管两端焊上流体入管与流体出管， 或在电磁 加热单元的两端焊上流体入管、 流体出管或回转管， 即制成电磁供热设备。
PCT/CN2014/080781 2013-07-02 2014-06-26 一种电磁加热装置及电磁供热设备 WO2015000377A1 (zh)

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