CN111083820B - Open-close type induction heater - Google Patents
Open-close type induction heater Download PDFInfo
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- CN111083820B CN111083820B CN202010073582.1A CN202010073582A CN111083820B CN 111083820 B CN111083820 B CN 111083820B CN 202010073582 A CN202010073582 A CN 202010073582A CN 111083820 B CN111083820 B CN 111083820B
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- 230000006698 induction Effects 0.000 title claims abstract description 54
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 349
- 229910052802 copper Inorganic materials 0.000 claims abstract description 349
- 239000010949 copper Substances 0.000 claims abstract description 349
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- 229920001342 Bakelite® Polymers 0.000 claims description 42
- 239000004637 bakelite Substances 0.000 claims description 42
- 239000000919 ceramic Substances 0.000 claims description 25
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 5
- 229920002530 polyetherether ketone Polymers 0.000 claims description 5
- 235000018290 Musa x paradisiaca Nutrition 0.000 claims description 4
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 240000005561 Musa balbisiana Species 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 155
- 229910000831 Steel Inorganic materials 0.000 abstract description 51
- 239000010959 steel Substances 0.000 abstract description 51
- 238000010438 heat treatment Methods 0.000 abstract description 31
- 238000010791 quenching Methods 0.000 abstract description 14
- 230000000171 quenching effect Effects 0.000 abstract description 14
- 230000005611 electricity Effects 0.000 abstract description 5
- 239000002356 single layer Substances 0.000 abstract description 5
- 230000001276 controlling effect Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 11
- 238000001816 cooling Methods 0.000 description 8
- 229910000734 martensite Inorganic materials 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 229910001566 austenite Inorganic materials 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 6
- 239000004033 plastic Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 241000234295 Musa Species 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 229920002379 silicone rubber Polymers 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910000712 Boron steel Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
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- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- 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
-
- 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
- H05B6/36—Coil arrangements
-
- 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
- H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
- H05B2206/02—Induction heating
Abstract
The invention relates to an open-close type induction heater, which comprises an upper layer of hollow copper pipe, a lower layer of hollow copper pipe, a parallel copper seat, a series copper seat, a power-on soft connection, a power-on plug, a magnetizer fixing piece and a fixing piece of a to-be-heated member, wherein the upper layer of copper pipe and the lower layer of copper pipe are arranged in parallel, and two ends of the copper pipe are connected with the parallel copper seat and; a plurality of upper and lower layers of copper pipes are inserted into the parallel copper seat in a direction vertical to the copper pipes, and two ends of each copper pipe are respectively connected with an elbow hollow copper pipe and a water outlet; the other end of the elbow hollow copper pipe is connected with an electric soft connection, and the other end of the soft connection is connected with an elbow hollow copper pipe for electricity conduction and water conduction; adjacent copper pipes on the same layer are connected end to end; the head and tail end parts of the single-layer hollow copper pipe are respectively connected with a water inlet pipe and a water outlet pipe. The heater can realize uniform heating of the steel plate, and can realize the position, the size and the temperature difference degree of each high-low temperature area in a mode of flexibly regulating and controlling the magnetizer, so that parts after quenching can obtain different customizable mechanical properties. The steel plate clamping device avoids using the traditional induction heating, and a new way is provided for the robot to grab and heat the plate.
Description
The technical field is as follows:
the invention belongs to the technical field of induction heating, and particularly relates to an open-close type induction heater.
Background art:
under the background of light weight of automobiles, the production process of quenching a high-strength boron steel plate after complete austenitization to obtain a uniform martensitic formed part by a hot stamping process is developed vigorously. However, for B-column type parts of automobiles, the parts do not need to be uniform in performance, and mechanical properties of different positions are needed to realize differentiation, namely strength attributes are customized. In the prior art, a stamping part with gradient performance is generally obtained by adjusting the process design of an original plate or stamping a partition die, but the technical problems of complex process, low efficiency, easy cracking of a formed plate and the like generally exist.
The invention content is as follows:
the invention aims to overcome the defects in the prior art, and provides an open-close type induction heater which realizes the free combination and disassembly of a copper pipe and a magnetizer, is suitable for a partitioned induction heating process, and increases the operability and flexibility of the induction heater on the basis of the existing induction heating mode; and the inductor can be opened after heating is finished, so that a new way is provided for solving the problem that a follow-up robot grabs and heats the plate.
Specifically, a novel partitioned controllable induction heating process is provided based on the principle of induction heating, the process requires the reformation of the original solenoid type heater, and therefore a novel open-close type induction heater is provided and manufactured.
The process principle of zone controllable induction heating is as follows: a uniform electromagnetic field can be obtained by using the high-frequency solenoid type heating coil, so that a 22MnB5 steel plate 2mm to 3.5mm thick can be uniformly heated. By utilizing the characteristic that the relative permeability of the magnetizer is higher than that of the steel plate, the eddy current field on the steel plate below the magnetizer is redistributed, namely, the eddy current at the position of the steel plate corresponding to the magnetizer is less, and the eddy current at other positions is more. According to Joule's law, the temperature of the position on the steel plate where the eddy current strength is low, all austenite transformation does not occur, and a certain proportion of ferrite is reserved, so that a mixed structure of austenite and ferrite is obtained; the other positions on the steel plate are far away from the magnetizer, and the temperature of the steel plate is higher and the steel plate is transformed into austenite. After the press quenching, the mixed structure of the low temperature region is transformed into a mixed structure of martensite and ferrite. Because the structure contains ferrite after the quenching in the low-temperature region, the strength is low and the plasticity is high; the high-temperature area is transformed into lath martensite, and the strength is high. By the method, the parts with different strength attributes of two strength tissues are obtained by stamping and quenching after one-time heating. An automotive B-pillar is a typical application for such parts. The B column of the automobile requires large strength difference of parts, the strength of the upper part is high, and deformation is avoided during collision; the lower part has high plasticity, and can absorb the energy in collision to protect the safety of passengers.
Because the partition controllable induction heating process has high requirement on the parallelism of the solenoid and the magnetizer can be randomly arranged between the steel plate and the copper pipe, more importantly, the inductor is convenient for a subsequent robot to grab the heating plate. Therefore, redesign of the coil in the form of a conventional solenoid is required.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an open-close type induction heater, includes upper and lower two-layer hollow copper pipe, parallelly connected copper seat, series connection copper seat, circular telegram soft hookup, circular telegram plug and magnetizer mounting and wait to add the heat member mounting, wherein:
the upper and lower layers of hollow copper pipes are all laid in parallel in the horizontal direction of the plurality of hollow copper pipes, the upper and lower layers of hollow copper pipes are arranged in parallel, the left and right ends of the upper and lower layers of hollow copper pipes are respectively connected with a parallel copper seat and a series copper seat, the parallel copper seats and the series copper seats are arranged in parallel, and particularly, the left end of the upper layer of hollow copper pipe is connected with the upper layer of parallel copper seats, and the right end of the upper layer of hollow copper pipe is connected with the upper layer of series copper seats; the left end of the lower layer hollow copper pipe is connected with a lower layer parallel copper seat, and the right end of the lower layer hollow copper pipe is connected with a lower layer serial copper seat; the upper layer parallel copper seat and the lower layer parallel copper seat are arranged in an aligned manner at the end part, and the upper layer series copper seat and the lower layer series copper seat are arranged in an aligned manner at the end part;
a plurality of upper-layer copper pipes are inserted into the upper-layer parallel copper seat in a direction vertical to the hollow copper pipes, one end of each upper-layer copper pipe is connected with an upper-layer elbow hollow copper pipe, and the other end of each upper-layer copper pipe is provided with an upper-layer water outlet; the other end of the upper-layer elbow hollow copper pipe is connected with an upper-layer power-on soft connection, and the other end of the upper-layer power-on soft connection is connected with an upper-layer elbow hollow copper pipe for electricity conduction and water circulation through a hoop a;
the upper-layer elbow hollow copper pipe for conducting and communicating water is simultaneously connected with a power supply and a water tank;
a lower copper pipe is arranged in the lower parallel copper seat in a direction vertical to the hollow copper pipe, one end of the lower copper pipe, which is opposite to the upper copper pipe, is connected with a lower elbow hollow copper pipe, and the other end of the lower copper pipe is provided with a lower water outlet; the other end of the lower-layer elbow hollow copper pipe is connected with a lower-layer power-on flexible connection, and the other end of the lower-layer power-on flexible connection is connected with a lower-layer elbow hollow copper pipe for conducting and communicating water through a hoop b;
the lower-layer elbow hollow copper pipe for conducting and communicating water is simultaneously connected with a power supply and a water tank;
two adjacent hollow copper pipes which are laid in parallel in the horizontal direction on the same layer are connected end to end through water pipes and clamped by plastic pipe clamps to realize sealing, so that an S-shaped pipeline is formed; the head and tail end parts of the single-layer hollow copper pipe are respectively connected with a water inlet pipe and a water outlet pipe;
the upper-layer series copper seat and the lower-layer series copper seat are connected through an electrified plug.
The gap height of the upper and lower layers of copper pipes of the open-close type induction heater is 14-16mm, the arrangement gap of the single layer of copper pipes is 8-12mm, and the upper and lower layers of copper pipes are paved in a staggered manner.
The upper water pipe realize the upper copper seat of establishing ties and parallelly connected copper seat cooling, the lower floor water pipe realize the lower floor and establish ties the copper seat and parallelly connected copper seat cooling.
The electrified plug is a banana plug with two tail parts connected.
The upper and lower both ends outside respectively of two-layer hollow copper pipe of open-close type induction heater connect and support bakelite board and under bracing bakelite board, it is specific, support bakelite both ends and be fixed in the parallelly connected copper seat and the series connection copper seat that correspond separately through PEEK screwed connection.
The surfaces of the upper supporting bakelite plate and the lower supporting bakelite plate are provided with a plurality of threaded holes, the surface of the lower supporting bakelite plate is screwed with a plurality of ceramic screws for fixing the to-be-heated member in the direction of the lower hollow copper pipe, and the ceramic screws for fixing the to-be-heated member and the lower supporting bakelite plate are combined to serve as a fixing part of the to-be-heated member; the upper and/or lower supporting bakelite plates are/is internally screwed with a plurality of ceramic screws for fixing the magnetizers, the ceramic screws for fixing the magnetizers are combined with the upper and/or lower supporting bakelite plates to be used as magnetizer fixing pieces, and the magnetizers are fixed on the ceramic screws for fixing the magnetizers through bonding.
The power supply is a high-frequency heating power supply, and the high-frequency heating power supply is connected with copper pipes of upper and lower rows of parallel copper seats of the open-close type inductor through electrified soft connection.
The power-on flexible connection is formed by welding a copper braid strip on the lower half part of a copper pipe connected with a power supply copper pipe and an upper copper pipe connected with an open-close type heater, wrapping a high-temperature-resistant silicone tube outside the copper braid strip, and clamping the copper braid strip by a plastic clamp. Wherein, cooling water is introduced to cool the electrified copper pipe.
After the open-close type induction heater is electrified, the current flowing path is as follows: the power supply-the upper layer power-on soft connection-the upper layer parallel copper seat-the upper layer copper pipe-the upper layer series copper seat-the power plug-the lower layer series copper seat-the lower layer copper pipe-the lower layer parallel copper seat-the lower layer power-on soft connection-the power supply, thereby completing the input and output of a circle of induced current.
After the open-close type induction heater is filled with water: the water flow path is as follows:
the water tank-upper layer electrifying soft connection-upper layer hollow copper pipe-upper layer water outlet to complete the cooling of the upper layer parallel copper seat and the copper pipe inserted therein;
the water tank, the lower layer electrified soft connection, the lower layer hollow copper pipe and the lower layer water outlet complete the cooling of the lower layer parallel copper seat and the copper pipe inserted therein;
the water tank, the upper layer water inlet pipe and the upper layer are connected end to form an S-shaped hollow copper pipeline, and a plurality of hollow copper pipes are laid in parallel on the upper layer and connected in series with copper seats for cooling;
the water tank, the lower layer water inlet pipe and the lower layer are connected end to form an S-shaped hollow copper pipeline, and hollow copper pipes are laid in parallel on the lower layer and a series copper seat is connected in series to cool.
After the open-close type induction heater is electrified, current flows in the upper and lower copper pipes, and after the water is introduced, cooling water flows in series in the same layer of hollow copper pipe, so that the separated flowing circulation of the current and the water is realized.
The thickness of the bakelite is 30 mm.
In the open-close type induction heater, the upper and lower two support bakelite are provided with threaded holes, and the series copper pipe and the parallel copper seat can be fixed on the support bakelite through PPEK screws. Threaded holes are drilled in the upper and lower support bakelite for placing ceramic screws, and the ceramic screws are used for:
(1) fixing and supporting the steel plate so that the steel plate can be statically placed in the heater without other clamping devices;
(2) the magnetizer is fixed, and the magnetizer is positioned between the copper pipe and the steel plate by bonding the magnetizer on the ceramic screw, so that the design has the advantages of randomly arranging the position of the magnetizer and controlling the distance between the magnetizer and the steel plate.
In the open-close type induction heater, the key opening and closing actions in the open-close type inductor can be realized by designing a flexible connection mode of electrifying soft connection. Wherein the copper braid over braid only welds on a part of hollow copper pipe cross section, both realizes electrically conductive and can not hinder to the flow production of cooling water again, and the equal material of silica gel water pipe of copper braid over braid and external sleeve is soft, can realize opening and shutting in a flexible way to the upper and lower layer copper pipe of inductor under the condition of not dismantling.
The open-close type inductor can flexibly adjust the position of the magnetizer, provide an accurate placing position of the static steel plate and does not need additional clamping equipment; the conduction of the upper and lower layers of copper pipes and the water path independent connection of the upper and lower layers of copper pipes are realized through the flexible conductive connection and the power-on plugs of the upper and lower layers of copper pipes.
The open-close type induction heater provided by the invention is used for heating steel plates, and can realize zone control and zone controllable induction heating process principle: a uniform electromagnetic field can be obtained by using the high-frequency solenoid type heating coil, so that a 22MnB5 steel plate 2mm to 3.5mm thick can be uniformly heated. By utilizing the characteristic that the relative permeability of the magnetizer is higher than that of the steel plate, the eddy current field on the steel plate below the magnetizer is redistributed, namely, the eddy current at the position of the steel plate corresponding to the magnetizer is less, and the eddy current at other positions is more. According to Joule's law, the temperature of the position on the steel plate where the eddy current strength is low, all austenite transformation does not occur, and a certain proportion of ferrite is reserved, so that a mixed structure of austenite and ferrite is obtained; the other positions on the steel plate are far away from the magnetizer, and the temperature of the steel plate is higher and the steel plate is transformed into austenite. After the press quenching, the mixed structure of the low temperature region is transformed into a mixed structure of martensite and ferrite. Because the structure contains ferrite after the quenching in the low-temperature region, the strength is low and the plasticity is high; the high-temperature area is transformed into lath martensite, and the strength is high. By the method, the parts with different strength attributes of two strength tissues are obtained by stamping and quenching after one-time heating. An automotive B-pillar is a typical application for such parts. The B column of the automobile requires large strength difference of parts, the strength of the upper part is high, and deformation is avoided during collision; the lower part has high plasticity, and can absorb the energy in collision to protect the safety of passengers.
Because the partition controllable induction heating process has high requirement on the parallelism of the solenoid and the magnetizer can be randomly arranged between the steel plate and the copper pipe, more importantly, the inductor is convenient for a subsequent robot to grab the heating plate. The present invention therefore redesigns the coil in the form of a conventional solenoid.
The invention has the beneficial effects that:
1. the open-close type induction heater realizes the open-close characteristic of the inductor through the design of a soft connection structure formed by the electrifying plug and the copper braided strap. The structure can ensure the stability of electrification, and greatly enhances the designability of the arrangement of the magnetizer and the arrangement of the steel plate.
2. The support bakelite is fully distributed with threaded holes, and is connected with the ceramic screws through the threaded holes, so that the steel plate and the magnetizer can be randomly arranged and adjusted on the support bakelite, the height of the steel plate and the magnetizer can be fixed, the device for clamping the steel plate by using the traditional induction heating process is avoided, and a new way for a subsequent robot to grab and heat the plate is provided.
2. By adopting the open-close type induction heater, current flows in the upper and lower copper pipes, and cooling water flows in the hollow copper pipes on the same layer, so that the separated flow circulation of the current and the water is realized.
3. The copper braided strap of the open-close type induction heater is only welded on one part of the cross section of the hollow copper pipe, so that the conduction is realized, the flowing of cooling water is not hindered, and a flexible connection structure which does not influence the opening and closing is formed.
4. By adopting the open-close type induction heater, the steel plate can be uniformly heated when the magnetizer is not adopted, and the position, the size and the temperature difference of each high-temperature area and each low-temperature area on the steel plate can be obtained by flexibly regulating and controlling the magnetizer. Thereby enabling the quenched part to obtain different customizable mechanical properties.
Description of the drawings:
fig. 1 is a schematic view of an internal structure of an open-close type induction heater with an upper supporting bakelite plate removed according to embodiment 1 of the present invention;
fig. 2 is a front view of an open-close type induction heater according to embodiment 1 of the present invention;
fig. 3 is a top view of an open-close type induction heater according to embodiment 1 of the present invention;
fig. 4 is a left side view of an open/close type induction heater according to embodiment 1 of the present invention;
fig. 5 is a perspective view of an open-close type induction heater according to embodiment 1 of the present invention;
FIG. 6 is a metallographic structure diagram of a 800 ℃ low temperature region of a steel plate obtained by the heating and quenching treatment using the open-close type induction heater according to embodiment 1 of the present invention;
FIG. 7 is a metallographic structure diagram of a high temperature region of 930 ℃ of a steel plate obtained by the heating and quenching treatment using the open-close type induction heater according to embodiment 1 of the present invention; wherein:
1-PEEK screw, 2-upper-layer series copper seat, 3-water pipe, 4-power-on plug, 5-lower-layer series copper seat, 6-lower-support bakelite plate, 7-ceramic screw, 8-magnetizer, 9-steel plate, 10-hollow copper pipe, 11-upper-layer water outlet, 12-water inlet pipe, 13-upper-layer parallel copper seat, 14-water outlet pipe, 15-upper-layer power-on flexible connection, 16-clamp a, 17-upper-support bakelite plate, F-ferrite and M-martensite.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to examples.
According to the open-close type induction heater, the support bakelite distributed with the threaded holes is fixed with the row of the series copper seats and the row of the parallel copper seats by the PEEK screws, a certain distance is kept between the series copper seats and between the parallel copper seats, and specifically, a gap of 1mm is reserved between the series copper seats and the parallel copper seats in the same row, so that the connection of electricity between the adjacent copper seats is prevented. A hollow copper pipe is inserted between the serial copper base and the parallel copper base and is propped and fixed by a plastic screw, two adjacent hollow copper pipes are connected end to end by a water pipe, and the joint is clamped by a pipe clamp;
the copper pipes of each layer are arranged in parallel, and the copper pipes of the upper layer and the copper pipes of the lower layer are completely staggered. According to the maximum thickness (3.5mm) of the steel plate and the maximum thickness (8mm) of the magnetizer, the distance (1mm) between the steel plate and the magnetizer, and the distance between the upper layer copper pipe and the lower layer copper pipe is 15 mm. The copper pipe needs to be connected with a copper supporting seat, which is called a copper seat for short and can be divided into a parallel copper seat and a series copper seat. The parallel copper seat is used for connecting the parallel copper pipes, and the series copper seat is used for connecting the series copper pipes and is used for conducting electricity. Specifically, the series copper seat is used for supporting two layers of copper pipes and conducting current, and the current flowing into the copper pipes is communicated with the series copper seat of the other layer through the electrified plug; the parallel copper seat is used for supporting the copper pipe and conducting current, and the current of the heating power supply is led into the whole inductor and then conducted inwards.
The parallel copper seats are inserted into a hollow copper pipe with an elbow at one end, a copper braid is welded at the elbow of the elbow hollow copper pipe, the area occupied by the welded copper braid is one third of the sectional area of the hollow copper pipe so as to leave a space for water to flow through, the elbow hollow copper pipe is welded at the other end of the copper braid, the elbow hollow copper pipe is connected with one end of an electrode, a water pipe is externally connected at the elbow, and a pipe clamp is clamped,
the copper braided belt and two parts of copper pipes (an elbow copper pipe for connecting a power supply and an elbow copper pipe for connecting a parallel copper base) which are welded together are sleeved in a high-temperature-resistant silicon rubber pipe, the joint of the high-temperature-resistant silicon rubber pipe and the hollow copper pipe is clamped by a pipe clamp, a water pipe is inserted into the joint of the high-temperature-resistant silicon rubber pipe and the copper pipe and is clamped by the pipe clamp, and the water pipe is communicated with a water storage barrel; inside the hose connection pipe, copper braid over braid is the electrically conductive part of flexible coupling, and the flexible coupling includes: copper woven belt, outer silicone tube and clamp;
the power-on plug formed by welding the tail ends of the banana plugs is inserted into the series copper seats, the power-on plug is inserted into the series copper seats on the same supporting bakelite, and the opening and closing problem of the opening and closing type inductor is solved by inserting and pulling out the power-on plug, which is similar to the relation between the plug and the socket.
Four ceramic screws are inserted into the lower supporting bakelite, steel plates are placed on the ceramic screws, and the steel plates are positioned between the upper layer of hollow copper pipe and the lower layer of hollow copper pipe and are not in contact with the hollow copper pipes;
two ceramic screws are inserted into the upper support bakelite, a magnetic conductor piece is placed on each ceramic screw and fixed by high-temperature-resistant glue, and the magnetic conductor piece is located between the steel plate and the upper hollow copper pipe and is not in contact with the hollow copper pipe and the steel plate. The bakelite is used for ensuring the rigidity and has the thickness of 30 mm.
The current trend is as follows: electrode → elbow hollow copper pipe → copper braid → elbow hollow copper pipe on the upper layer parallel copper seat → hollow copper pipe between the upper layer series copper seat → power-on plug → lower layer series copper seat → hollow copper pipe between the lower layer series copper seat → lower layer parallel copper seat → elbow hollow copper pipe on the lower layer parallel copper seat → copper braid → elbow hollow copper pipe → electrode.
By adopting the open-close type induction heater, the parallel copper seat is positioned at one side, and the series copper seat is positioned at the other side. According to the current principle, the parallel copper seat leads current into the whole heater from a heating power supply, the current enters the series copper seat through the copper pipe and then enters the series copper seat on the other layer through the electric plug, and the current of the upper layer and the current of the lower layer are communicated. After entering the lower or upper copper seat, the current flows through the copper tube connected with the copper seat, and finally returns to the parallel copper seat on the layer and returns to the heating power supply through the parallel copper seat. Completing the entire closed loop of current.
Example 1
An open-close type induction heater has an internal structure as shown in fig. 1, a front view as shown in fig. 2, a top view as shown in fig. 3, a left view as shown in fig. 4, and a perspective view as shown in fig. 5;
including upper and lower two-layer hollow copper pipe 10, parallelly connected copper seat, series connection copper seat, circular telegram soft hookup, circular telegram plug 4 and magnetizer mounting and treat heating member mounting, wherein:
the upper and lower layers of hollow copper pipes 10 are all laid in parallel in the horizontal direction of a plurality of hollow copper pipes, the upper and lower layers of hollow copper pipes 10 are arranged in parallel, the left and right ends of the upper and lower layers of hollow copper pipes 10 are respectively connected with a parallel copper seat and a series copper seat, the parallel copper seats and the series copper seats are arranged in parallel, and particularly, the left end of the upper layer of hollow copper pipe 10 is connected with an upper layer of parallel copper seat, and the right end of the upper layer of hollow copper pipe 10 is connected with an upper layer of series copper seat 2; the left end of the lower layer hollow copper pipe 10 is connected with a lower layer parallel copper seat, and the right end is connected with a lower layer serial copper seat 5; the end parts of the upper layer parallel copper seat and the lower layer parallel copper seat are aligned, and the end parts of the upper layer series copper seat 2 and the lower layer series copper seat 5 are aligned;
a plurality of upper-layer copper pipes are inserted into the upper-layer parallel copper seat 13 in a direction vertical to the hollow copper pipes 10, one end of each upper-layer copper pipe is connected with an upper-layer elbow hollow copper pipe, and the other end of each upper-layer copper pipe is provided with an upper-layer water outlet 11; the other end of the upper-layer elbow hollow copper pipe is connected with an upper-layer electrifying soft connection 15, and the other end of the upper-layer electrifying soft connection 15 is connected with an upper-layer elbow hollow copper pipe for electricity conduction and water circulation through a hoop a-16;
the upper-layer elbow hollow copper pipe for conducting and communicating water is simultaneously connected with a power supply and a water tank;
a lower copper pipe is arranged in the lower parallel copper seat in a direction vertical to the direction of 10 of the hollow copper pipe, one end of the lower copper pipe, which is opposite to the upper copper pipe, is connected with a lower elbow hollow copper pipe, and the other end of the lower copper pipe is provided with a lower water outlet; the other end of the lower-layer elbow hollow copper pipe is connected with a lower-layer power-on flexible connection, and the other end of the lower-layer power-on flexible connection is connected with a lower-layer elbow hollow copper pipe for conducting and communicating water through a hoop b;
the lower-layer elbow hollow copper pipe for conducting and communicating water is simultaneously connected with a power supply and a water tank; the high-frequency heating power supply is connected with copper tubes of upper and lower rows of parallel copper seats of the open-close type inductor through electrified soft connection.
Two adjacent hollow copper pipes 10 which are laid in parallel in the horizontal direction on the same layer are connected end to end through water pipes 3 and clamped by plastic pipe clamps to realize sealing, so that an S-shaped pipeline is formed; the head end part and the tail end part of the single-layer hollow copper pipe 10 are respectively connected with a water inlet pipe 12 and a water outlet pipe 14;
the upper-layer series copper seat 2 is connected with the lower-layer series copper seat 5 through an electrified plug 4.
The gap height of the upper and lower layers of copper pipes of the open-close type induction heater is 14-16mm, the arrangement gap of the single layer of copper pipes is 8-12mm, and the upper and lower layers of copper pipes are paved in a staggered manner.
The upper water pipe realize the upper series copper seat 2 and the cooling of parallelly connected copper seat, the lower floor water pipe realize the lower floor and establish ties copper seat 5 and the cooling of parallelly connected copper seat.
The electrified plug 4 is a banana plug with two tail parts connected.
The upper and lower both ends outside respectively of two-layer hollow copper pipe 10 of open-close type induction heater connect and support bakelite board 17 and under bracing bakelite board 6, it is specific, support bakelite both ends and connect through PEEK screw 1 and be fixed in the parallelly connected copper seat and the series connection copper seat that correspond separately.
The upper supporting bakelite plate 17 and the lower supporting bakelite plate 6 are provided with a plurality of threaded holes on the surfaces, the lower supporting bakelite plate 6 is screwed with a plurality of ceramic screws 7 for fixing a to-be-heated member in the direction of the lower hollow copper tube 10, and the ceramic screws 7 for fixing the to-be-heated member are combined with the lower supporting bakelite plate 6 to serve as a fixing member of the to-be-heated member; the upper and/or lower supporting bakelite plate 6 inwards screw a plurality of magnetizer fixing ceramic screws 7, a plurality of magnetizer fixing ceramic screws 7 and the upper and/or lower supporting bakelite plate 6 plate combination as magnetizer fixing pieces, and the magnetizer 8 is fixed on the magnetizer fixing ceramic screws 7 through bonding.
The power-on flexible connection is formed by welding a copper braid strip on the lower half part of a copper pipe connected with a power supply copper pipe and an upper copper pipe connected with an open-close type heater, wrapping a high-temperature-resistant silicone tube outside the copper braid strip, and clamping the copper braid strip by a plastic clamp. Wherein, cooling water is introduced to cool the electrified copper pipe.
After the open-close type induction heater is electrified, the current flowing path is as follows: the power supply-upper layer electrifying soft connection 15-upper layer parallel copper seat 13-upper layer hollow copper pipe 10-upper layer series copper seat 2-electrifying plug 4-lower layer series copper seat 5-lower layer copper pipe-lower layer parallel copper seat-lower layer electrifying soft connection-power supply, thereby completing the input and output of a circle of induced current.
After the open-close type induction heater is filled with water: the water flow path is as follows:
the water tank-upper layer electrifying flexible connection 15-upper layer hollow copper pipe 10-upper layer water outlet to finish the upper layer parallel copper seat and the copper pipe inserted therein to cool;
the water tank-the lower layer is electrified and flexibly connected-the lower layer hollow copper pipe 10-the lower layer water outlet, and the lower layer parallel copper seat and the copper pipe inserted therein are cooled;
the water tank, the upper layer water inlet pipe and the upper layer are connected end to form an S-shaped hollow copper pipeline, and a plurality of hollow copper pipes are laid in parallel on the upper layer and connected in series with copper seats for cooling;
the water tank, the lower layer water inlet pipe and the lower layer are connected end to form an S-shaped hollow copper pipeline, and hollow copper pipes are laid in parallel on the lower layer and a series copper seat is connected in series to cool.
The open-close type induction heater is adopted to heat the steel plate, the temperature control of the steel plate is obtained by changing the size of the magnetizer, and the maximum current is 150A when the steel plate is heated; the steel plate is placed on the ceramic screw, and the distance between the steel plate and the surface of the magnetizer is 1 mm; the specific parameters are as follows: placing a 22MnB5 steel plate 9 with the thickness of 3.5mm into the inductor, wherein the magnetic conductor sheet is made of ferrite and has the working frequency of over 500 kHz; and (2) starting a power supply, introducing alternating current to the inductor, wherein the frequency of the alternating current is 100kHz, the current is 150A, the voltage is 380V, the heating time is 30s, a low-temperature region and a high-temperature region are formed on the steel plate 9, the vertical projection part of the magnetizer is the low-temperature region, the rest part of the magnetizer is the high-temperature region, the temperature of the high-temperature region is 930 ℃, the temperature of the low-temperature region is 800 ℃, after heating is completed, the heated steel plate is subjected to stamping quenching to obtain a formed part which can be used for manufacturing an automobile B column, the formed part comprises the high-temperature region and the low-temperature region, a metallographic structure diagram after quenching in the low-temperature region is shown in figure 6, a microstructure is ferrite and martensite, a metallographic structure diagram after quenching in the high-temperature region is shown in figure 7, and a microstructure is martensite.
After stamping and quenching, the tensile strength of the steel plate in the low-temperature area is 900MPa, the total elongation is 18%, the strength of the steel plate in the high-temperature area is 1680MPa, and the total elongation is 10%.
The use example is only used as a schematic, and according to the actual engineering requirements, the acquisition of a higher plasticity area of the low-temperature area can be realized by arranging a plurality of magnetizers at equal intervals.
Claims (6)
1. The utility model provides an open-close type induction heater which characterized in that, includes upper and lower two-layer hollow copper pipe, parallelly connected copper seat, series connection copper seat, circular telegram soft coupling, circular telegram plug and magnetizer mounting and wait to add the heat member mounting, wherein:
the upper layer and the lower layer of hollow copper pipes are arranged in parallel, the left end and the right end of each of the upper layer and the lower layer of hollow copper pipes are respectively connected with a parallel copper seat and a series copper seat, the parallel copper seats and the series copper seats are arranged in parallel, and particularly, the left end of the upper layer of hollow copper pipe is connected with an upper layer of parallel copper seats, and the right end of the upper layer of hollow copper pipe is connected with an upper layer of series copper seats; the left end of the lower layer hollow copper pipe is connected with a lower layer parallel copper seat, and the right end of the lower layer hollow copper pipe is connected with a lower layer serial copper seat; the upper-layer parallel copper seat and the lower-layer parallel copper seat are arranged in an aligned manner, and the upper-layer series copper seat and the lower-layer series copper seat are arranged in an aligned manner;
a plurality of upper-layer copper pipes are inserted into the upper-layer parallel copper seat in a direction vertical to the hollow copper pipes, one end of each upper-layer copper pipe is connected with an upper-layer elbow hollow copper pipe, and the other end of each upper-layer copper pipe is provided with an upper-layer water outlet; the other end of the upper-layer elbow hollow copper pipe is connected with an upper-layer power-on flexible connection, and the other end of the upper-layer power-on flexible connection is connected with an upper-layer elbow hollow copper pipe for conducting and communicating water;
the upper-layer elbow hollow copper pipe for conducting and communicating water is simultaneously connected with a power supply and a water tank;
a lower copper pipe is arranged in the lower parallel copper seat in a direction vertical to the hollow copper pipe, one end of the lower copper pipe, which is opposite to the upper copper pipe, is connected with a lower elbow hollow copper pipe, and the other end of the lower copper pipe is provided with a lower water outlet; the other end of the lower-layer elbow hollow copper pipe is connected with a lower-layer power-on flexible connection, and the other end of the lower-layer power-on flexible connection is connected with a lower-layer elbow hollow copper pipe for conducting and communicating water;
the lower-layer elbow hollow copper pipe for conducting and communicating water is simultaneously connected with a power supply and a water tank;
a plurality of hollow copper pipes on the same layer are connected end to end through water pipes to form an S-shaped pipeline; the head and tail ends of the upper layer hollow copper pipe are respectively connected with a water inlet pipe and a water outlet pipe, and the head and tail ends of the lower layer hollow copper pipe are respectively connected with a water inlet pipe and a water outlet pipe;
the upper-layer series copper seat and the lower-layer series copper seat are connected through an electrified plug;
the outer sides of the upper end and the lower end of the two-layer hollow copper pipe of the open-close type induction heater are respectively connected with an upper supporting bakelite plate and a lower supporting bakelite plate, and particularly, the two ends of the supporting bakelite plate are connected and fixed to a parallel copper seat and a series copper seat which respectively correspond to the two ends through PEEK screws;
the surfaces of the upper supporting bakelite plate and the lower supporting bakelite plate are provided with a plurality of threaded holes, the surface of the lower supporting bakelite plate is screwed with a plurality of ceramic screws for fixing the to-be-heated member in the direction of the lower hollow copper pipe, and the ceramic screws for fixing the to-be-heated member and the lower supporting bakelite plate are combined to serve as a fixing part of the to-be-heated member; the upper and/or lower supporting bakelite plates are/is internally screwed with a plurality of ceramic screws for fixing the magnetizers, the ceramic screws for fixing the magnetizers are combined with the upper and/or lower supporting bakelite plates to be used as magnetizer fixing pieces, and the magnetizers are fixed on the ceramic screws for fixing the magnetizers through bonding.
2. The open-close type induction heater according to claim 1, wherein the gap height between the upper and lower copper pipes of the open-close type induction heater is 14-16mm, the arrangement gap between the single copper pipes is 8-12mm, and the upper and lower copper pipes are laid in a staggered manner.
3. The split induction heater of claim 1, wherein said power plug is two banana plugs connected at their tail.
4. The open-close type induction heater according to claim 1, wherein the water tank, the upper layer electrifying soft connection, the upper layer hollow copper pipe and the upper layer water outlet are communicated to form an upper layer parallel copper seat water flow passage; the water tank, the lower layer electrifying flexible connection, the lower layer hollow copper pipe and the lower layer water outlet are communicated to form a lower layer parallel copper seat water flow passage.
5. The open-close type induction heater according to claim 1, wherein the upper layer hollow copper pipes are connected end to form an upper layer S-shaped hollow copper pipeline, and the lower layer hollow copper pipes are connected end to form a lower layer S-shaped hollow copper pipeline.
6. The open-close induction heater according to claim 1, wherein the bakelite has a thickness of 30 mm.
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| CN202010073582.1A CN111083820B (en) | 2020-01-22 | 2020-01-22 | Open-close type induction heater |
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| KR101041305B1 (en) * | 2009-04-07 | 2011-06-13 | 정가영 | A device to generate heat by induction heating type |
| CN201426193Y (en) * | 2009-04-08 | 2010-03-17 | 梁信辉 | Electric heating apparatus for heating flowing fluid |
| CN101754508B (en) * | 2009-12-29 | 2011-11-09 | 杭州四达电炉成套设备有限公司 | Induction heater for reinforcing steel bar surface coating |
| CN105698525B (en) * | 2014-11-27 | 2019-07-23 | 宝山钢铁股份有限公司 | Induction heater with point half formula plate induction coil |
| CN104470017B (en) * | 2014-12-11 | 2016-02-03 | 河北同光晶体有限公司 | A kind of load coil device |
| CN207011026U (en) * | 2016-12-29 | 2018-02-13 | 南京平日制冷科技有限公司 | Water power loop separates load coil |
| CN206611605U (en) * | 2017-03-13 | 2017-11-03 | 南京平日制冷科技有限公司 | A kind of water power loop separates load coil |
| CN109647954B (en) * | 2018-12-26 | 2020-03-31 | 东北大学 | Process device and method for uniformly heating planar thin steel plate through electromagnetic induction |
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