CN105485891A - Induction heater with closed magnetic circuit - Google Patents
Induction heater with closed magnetic circuit Download PDFInfo
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- CN105485891A CN105485891A CN201610021991.0A CN201610021991A CN105485891A CN 105485891 A CN105485891 A CN 105485891A CN 201610021991 A CN201610021991 A CN 201610021991A CN 105485891 A CN105485891 A CN 105485891A
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- 239000007788 liquid Substances 0.000 claims abstract description 26
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- 239000012530 fluid Substances 0.000 claims description 11
- 239000004020 conductor Substances 0.000 claims description 9
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Classifications
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- 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
- F24H1/0018—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters using electric energy supply
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- 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
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
-
- 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
-
- 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
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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
- H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
- H05B2206/02—Induction heating
Abstract
The invention provides an induction heater with a closed magnetic circuit. The closed magnetic circuit is formed by a container or a water pipe of a heating part of the induction heater. Vortex is formed in the container or the water pipe in a magnetic field induction manner for heating, and therefore liquid such as water and oil in the container or the water pipe is heated. Compared with a traditional electric heater, the induction heater has the following beneficial effects that firstly, indeed liquid-electricity separation is achieved through a magnetic field, and safety is very high; secondly, the heating area is large, the power density of a heating surface is small, the temperature is low, the damaging effects such as decomposing of oil are low, and generated scale of water is little; thirdly, the container or the water pipe emits heat by itself, the heating delay is short, and temperature control is easy; and fourthly, the magnetic circuit is closed, so that outward radiation is little, and efficiency is high. The induction heater can be widely used for heating liquid such as oil, water, acid-bases and chemical raw materials in the industry and can also be used for gas heating. The induction heater can be widely used for manufacturing instantaneous heating type and water storage type electric water heaters, other electric water heaters and water boilers for civil use.
Description
Technical field
The present invention relates to a kind of electric heater unit, especially utilize electromagnetic induction to produce eddy current to add the heater of hot fluid.
Background technology
Common electric heater utilizes resistance wire heating power to heat, and its structure wears a resistance wire in a metal tube, and filling chlorinated magnesium powder insulate therebetween.Due to expanding with heat and contract with cold during heating, magnesium chloride powder may be caused to loosen, occur the direct contacting metal pipe of resistance wire, thus electric leakage accident occurs.So plant structure to there is potential safety hazard all the time, need to add the ancillary techniques such as anti-electricity wall to improve security.Moreover completely cutting off due to magnesium chloride powder, heat transfer postpones comparatively large, and will wait for a moment during heat-generating pipe power transmission just can be hot, wants the long time just can lower the temperature, have impact on temperature control effect after power-off.In addition because metal tube is comparatively thin, surface area is little, and power density is large, and during heating, local temperature is high, easily causes heated material carbonization or rotten.
Electromagnetic induction heating can to a certain degree solve the problem.Induction coil around on water tank, though can realize eddy-current heating, is used open magnetic circuit structure, has and drive the disadvantages such as difficult, radiation is large by Chinese patent application CN201420655892.Chinese patent application CN200620083771 uses I-shaped magnetic core and pipe with spiral pipe to form closed magnetic circuit, Chinese patent application CN201510362215 uses the E-type magnetic heart and water tank wall to form closed magnetic circuit, though to a certain degree improve to some extent, still have the problem of the comparatively large and core loss of leakage field.
Summary of the invention
The object of this invention is to provide a kind of device, it can produce eddy current to add hot fluid with electromagnetic induction, easily drives simultaneously, at utmost reduces radiation.
The basic structure of device provided by the present invention is made up of inductor and coil.Inductor can be the container of splendid attire fluid, also can be the pipeline of conveying fluid.Inductor is made up of high magnetic conduction conductive material, and on magnetic circuit, form at least one loop closed completely, and this loop is all high permeability materials.Coil is then wrapped on the loop as iron core, when coil passes to high frequency electric, in the closed circuit of inductor, produces induced field, and then produces eddy-current heating, to fluid heating wherein.The material that the structural acessories such as in addition for preventing magnetic field exposure, import is made up of the material that magnetic conductivity is low with outlet, fixing, support also use magnetic conductivity low makes, non-conductive, not heat conduction is better.
Most of high-quality steel, carbon steel, cast iron etc. are all high magnetic conduction conductive materials, and ferrite-group stainless steel (as 430) is also high magnetic conduction conductive material, is all applicable to the present invention.The material that magnetic conductivity is low can select the materials such as austenitic stainless steel (as 304), copper, aluminium, if intensity, temperature, corrosion resistance etc. meet the demands, engineering plastics are then better selections.
The concrete structure of device provided by the present invention is: the material that inductor is high by magnetic conductivity, resistivity is low is made, and inductor self forms the iron core of a closed magnetic circuit, has on this iron core of one or more coil encircling; Inlet and liquid outlet are made up of the material that magnetic conductivity is low.
The another concrete structure of device provided by the present invention is: inductor comprises a concave shape casing (1a) and one section of coil pipe (2), and coil pipe embeds in the breach of concave shape casing and is tightly connected, and both inside are all hollow and are communicated with.
The another concrete structure of device provided by the present invention is: inductor comprises two sections of parallel placements, the extra heavy pipe road (1b) as water tank, two sections or more coil pipe (2) and end caps (12); Coil pipe (2) is positioned between two extra heavy pipe roads (1b), is connected with two extra heavy pipe road vertical seal; End cap (12) is positioned at extra heavy pipe road (1b) end face, is tightly connected with extra heavy pipe road; Each pipe inside is all hollow and is communicated with.
The another concrete structure of device provided by the present invention is: inductor, for ease of the single piece of casting, containing upper and lower two cavitys (1d), has the coil pipe (2) of two or more hollow to be communicated with between two cavitys; Upper cavity upward opening, lower chamber under shed, opening direction and coil pipe axis being parallel; The opening of upper and lower cavity is closed by cover plate (12a).
The another concrete structure of device provided by the present invention is: its coil pipe (2) is divided into two groups, lays respectively at both sides; Wherein one group of uneasiness installs coil, only as fluid passage; Another group comprises two or more coil pipe (2), and install equivalent amount coil (3), these coil currents have appropriate phase, make this group coil pipe have closed magnetic path of one's own.
The another concrete structure of device provided by the present invention is: inductor is made up of the pipeline of two-way or more by fluid, and pipeline self forms a closed magnetic circuit.Inductor is formed by connecting by two coil pipes (2a) and two heating tube tube connectors (8), both conductive magneto-conductive materials; Coil (3) on two coil pipes (2a) passes to phase place inverse current, makes himself to form a closed magnetic circuit; Upper end tube connector (8) connects water tank (1) by heating tube liquid outlet (7); Lower end tube connector (8) connects water tank (1) by heating tube inlet (6); Lower end tube connector (8) outside is also provided with circulating pump (9).
The another concrete structure of device provided by the present invention is: inductor is made up of U-shaped coil pipe (2b) and heating tube connecting plate (10), is all conductive magneto-conductive material, forms a closed magnetic circuit; There is a cylinder manifold (11), it has groove, inlet (4) and liquid outlet (5) are also installed; Cylinder manifold (11) and heating tube connecting plate (10) are involutory forms the passage being communicated with U-shaped coil pipe (2) and liquid in-out mouth afterwards.
The another concrete structure of device provided by the present invention is: inductor is formed by connecting by two or more coil pipe (2c) and two heating tube tube connectors (8), both conductive magneto-conductive materials, forms closed magnetic circuit; Coil pipe (2c) is in solenoid shape, and coil (3) is worn around in solenoid.Each coil (3) is worn around in two solenoids.
In the present invention, because electric energy realizes heating by magnetic field induction eddy current, do not have the direct contact of electricity, security is very high; Because chamber wall or duct wall directly generate heat, heat transfer area is large, thermal resistance is little, thermal inertia is little, and heating effect is faster and better; Because the permeability of closed magnetic circuit is far longer than air, induced field is located substantially in inductor, and leakage magnetic field and radiation are very little, very environmental protection; The magnetic resistance of closed magnetic circuit is little, is also easy to drive, and cost is low.
Accompanying drawing explanation
Fig. 1 is embodiment 1, positive displacement basic model induction heater.
Fig. 2 is embodiment 2, the precious type induction heater in little kitchen.
Fig. 3 is embodiment 3, two pipe symmetric form induction heater.
Fig. 4 is embodiment 4, and both sides manage asymmetric induction heater.
Fig. 5 is embodiment 5, cast moulding ring induction heater.
Fig. 6 is embodiment 6, and Double-tube cyclic type induction heater is put on side.
Fig. 7 is embodiment 7, quick-heating type induction heater.
Fig. 8 is embodiment 8, spiral double-pipe induction heater.
Fig. 9 is embodiment 9, spiral three pipe induction heater.
Figure 10 is embodiment 10, spiral six pipe induction heater.
In figure: 1, water tank, 1a, concave character type water tank, 1b, two tubular type water tank, 1c, both sides' cast water tank, 2, coil pipe, 2a, elbow coil pipe, 2b, U-shaped coil pipe, 2c, solenoid type coil pipe, 3, coil, 4, water tank inlet, 5, water tank liquid outlet, 6, heating tube inlet, 7, heating tube liquid outlet, 8, heating tube tube connector, 9, circulating pump, 10, heating tube connecting plate, 11, cylinder manifold, 12, cover plate, 12a, upper mo(u)ld bottom half cover plate
Detailed description of the invention
The detailed description of the invention of the complete closure magnetic circuit induction heater that the present invention proposes is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is the embodiment 1 proposed according to the present invention.As figure, water tank (1) and coil pipe (2) inside are all hollow, inner connection water-filling.Water tank (1) and coil pipe (2) form inductor jointly, all making by having ferromagnetic ferritic stainless steel 430, obviously they form a closed magnetic circuit, becoming the iron core of coil.Coil (3) is looped around on coil pipe (2), when wherein passing to high frequency electric, induce high frequency magnetic field in the closed magnetic circuit formed in water tank (1) and coil pipe (2), and then produce eddy-current heating, water is wherein heated.Water inlet (4) and delivery port (5) are made up of the austenitic stainless steel 304 that magnetic conductivity is low, can prevent magnetic field from propagating along pipeline like this.
The technique of painting in entery and delivery port figure is principle, and can require to adjust according to upper water-out, lower water outlet etc. in reality, this is not difficult to realize for industry technical staff.Consider for insulation, the outer coated one layer of heat preservation layer of whole heater, also just prevents outside magnetic conduction object contact induction body to cause magnetic field exposure simultaneously.Also the material adding insulation and thermal insulation is needed between coil and inductor.Certainly also need configuring high-frequency power supply, controller, detector etc., this is for industry technical staff genus known technology.These are also applicable to following embodiment, no longer repeated description.
Fig. 2 is the embodiment 2 proposed according to the present invention.As figure, in example 1, water tank (1) is made as the concave character type water tank (1a) of 90-degree rotation, coil pipe (2) embeds in the groove of concave character type and is tightly connected, and water tank (1a) and coil pipe (2) inside are all hollow, inner connection water-filling.Water tank (1) and coil pipe (2) form inductor jointly, all making by having ferromagnetic ferritic stainless steel, obviously they form a closed magnetic circuit.Coil (3) is around on coil pipe (2), when wherein passing to high frequency electric, induce high frequency magnetic field in the closed magnetic circuit formed in water tank (1b) and coil pipe (2), and then produce eddy-current heating, water is wherein heated.Water inlet (4) and delivery port (5) are made up of the austenitic stainless steel 304 that magnetic conductivity is low, can prevent magnetic field from propagating along pipeline like this.
Compared with embodiment 1, the structure of this example is compacter, but technique is slightly complicated.Be specially adapted to the low capacity water heater that little kitchen treasured waits 2 ~ 30 liters.
Fig. 3 is the embodiment 3 proposed according to the present invention.As figure, water tank (1b) is made up of the thick pipe of two sections irony and cover plate (12), coil pipe (2) is made up of two sections, left and right or multistage irony pipe, thick pipe is parallel couples together by two for coil pipe (2), be welded to each other firmly, inner connection water-filling.Water tank (1b) and coil pipe (2) form inductor jointly, obviously they form a closed magnetic circuit.Coil (3) is around on coil pipe (2), when wherein passing to anti-phase high frequency electric, induce high frequency magnetic field in the closed magnetic circuit formed in water tank (1b) and coil pipe (2), and then produce eddy-current heating, water is wherein heated.Water inlet (4) and delivery port (5) are made up of the material that magnetic conductivity is low, can prevent magnetic field from propagating along pipeline like this.
Anti-corrosion treatment can be carried out further in the inside of water tank and coil pipe, and as chromium plating, zinc-plated etc., enamel also can anticorrosion but conduct heat not good enough.Certainly, with stainless steel also can, but because itself is comparatively large, cost is higher.The thick pipe both ends of the surface of two iron leg matter of the present embodiment are not on Primary magnetic circuit, and magnetic flux is relatively weak, can not adopt permeability magnetic material, even plastics.Structure is a two ends machining internal thread for two thick pipes, and end cap is with the sealing that is threaded.After so thick pipe and coil pipe weld, two ends are unlimited, are easy to carry out the inner processing such as polishing, polishing, chromium plating, good manufacturability.
The present embodiment is rational in infrastructure, good manufacturability, is particularly suitable for middle Large Copacity water heater and uses.
Fig. 4 is the embodiment 4 proposed according to the present invention.This example is similar to embodiment 3 structure, and difference is: the thick pipe as water tank changes square tube (1c) into, to increase space availability ratio; Side have one (or more) coil pipe, coil on it, as in figure right side; Opposite side have two (or more) coil pipe (2), it is provided with coil (3), as in figure left side; Each coil forms closed magnetic circuit.To two coil forms in figure, two the direction of the winding current are contrary, and corresponding transient magnetic field is also contrary, thus forms closed magnetic circuit; For three-winding type, between coil, electric current is mutually in 120 ° of phase shifts, thus forms closed magnetic circuit.Like this, induced field mainly concentrates on left side, and left field heating obviously can be greater than right side, forms Heated asymmetrically, is convenient to inner water and forms convection current.
Fig. 5 is the embodiment 5 proposed according to the present invention.In the present embodiment, upper lower header (1d) and three coil pipes (2) are by the fluid origin entirety of ferrimagnet, obviously they form closed magnetic circuit.The cover plate (12) being positioned at both sides in example 3, example 4 becomes above-below direction, so just can be convenient to cast the demoulding.After upper and lower two end cover plate (12a) covers, namely form the enclosed construction of hollow, as figure.Right side cut away one jiao in figure, to observe internal structure.Three coils (3), around on coil pipe (2), when wherein passing to three-phase high frequency electric, induce high frequency magnetic field in the closed magnetic circuit formed in inductor, and then produce eddy-current heating, heat water wherein.
Showing it is three coil forms in this example, is feasible with two or more coil equally.This example also reference example 4 can form Heated asymmetrically type water heater.
The present embodiment is rational in infrastructure, good manufacturability, is applicable to various water heater and uses.
Fig. 6 is the embodiment 6 proposed according to the present invention.As figure, water tank (1), coil pipe (2a), heating tube tube connector (8), heating tube inlet (6) and heating tube liquid outlet (7) inside is all hollow, inner connection water-filling.Two coil pipes (2a) and two sections heating tube tube connector (8) form inductor jointly, all making by having ferromagnetic ferritic stainless steel 430, obviously they form a closed magnetic circuit.Two coils (3) are around on coil pipe (2a), and Opposite direction connection, when wherein passing to anti-phase high frequency electric, induces high frequency magnetic field in the closed magnetic circuit formed in inductor, and then produce eddy-current heating, heat water wherein.Circulating pump (9) is forced to send water to coil pipe (2) from heating tube inlet (6), then returns water tank by heating tube liquid outlet (7), forms circulation, strengthens heat trnasfer.
In this example, water tank (1) can participate in heating, also can not participate in.If heating tube inlet (6) and heating tube liquid outlet (7) are made up of the material that magnetic conductivity is low, can prevent magnetic field from propagating into water tank along pipeline like this, water tank does not just participate in heating.If heating tube inlet (6) and heating tube liquid outlet (7) and water tank are made up of the material that magnetic conductivity is high, have partial magnetic field and branch to water tank, water tank participates in heating, but heating effect is more weak.
Fig. 7 is the embodiment 7 proposed according to the present invention.This example forms inductor by three U-shaped coil pipes (2b) and heating tube connecting plate (10), is all made up of the ferromagnetic material of conductive magneto-conductive, obviously they form three closed magnetic circuits.Cylinder manifold (11) or heating tube connecting plate (10) have groove, after both are involutory, forms the path of connection three U-shaped coil pipes (2b).Three coil pipes (3), around on U-shaped coil pipe (2b), when wherein passing to three-phase high frequency electric, induce high frequency magnetic field in the closed magnetic circuit formed in inductor, and then produce eddy-current heating, heat fluid wherein.
The present embodiment is applicable to high-power immediate heating type water heater and uses.
Fig. 8 is the embodiment 8 proposed according to the present invention.In this example, coil pipe (2c) makes solenoid shape, as figure.Two coil pipes (2c) and heating tube tube connector (8), heating tube inlet (6) and heating tube liquid outlet (7) inside are all hollow, inner connection topping up body.Two solenoid coil pipes (2c) and two sections heating tube tube connector (8) form inductor jointly, all making by having ferromagnetic ferritic stainless steel 430, obviously they form a closed magnetic circuit.Coil (3) is across around on two coil pipes (2), when wherein passing to high frequency electric, induce high frequency magnetic field in the closed magnetic circuit formed in inductor, and then produce eddy-current heating, the liquid flow through wherein or gas are heated.
Heating tube inlet (6) and heating tube liquid outlet (7) should be made up of the material that magnetic conductivity is low, can prevent magnetic field from propagating along pipeline like this.
In the present embodiment, coil pipe (2) makes solenoid shape, increases heating surface (area) (HS, reduces power density, is particularly suitable for heating the easy high temperature cabonization such as various oil, chemical products, decomposition, rotten liquid.Meanwhile, the length of its coil (3) is shorter, is easy to adopt higher power frequency.
Fig. 9 is the embodiment 9 proposed according to the present invention.This example is similar to embodiment 8, and coil pipe (2c) is also solenoid shape, and just for adapting to three-phase electricity, coil changes 3 into, as figure.Three coil pipes (2c) and two heating tube tube connectors (8), heating tube inlet (6) and heating tube liquid outlet (7) inside are all hollow, inner connection topping up body.Three coil pipes (2c) and two sections heating tube tube connector (8) form inductor jointly, all making by having ferromagnetic ferritic stainless steel 430, obviously they form closed magnetic circuit.Three coils (3) are separately across around on two coil pipes (2), when wherein passing to three-phase high frequency electric, induce high frequency magnetic field in the closed magnetic circuit formed in inductor, and then produce eddy-current heating, the liquid flow through wherein or gas are heated.
Heating tube inlet (6) and heating tube liquid outlet (7) should be made up of the material that magnetic conductivity is low, can prevent magnetic field from propagating along pipeline like this.
The present embodiment changes three-phase three tunnel on example 8 basis, can increase power, reduce electromagnetic radiation.
Figure 10 is the embodiment 10 proposed according to the present invention.This example changes three-phase six tunnel on embodiment 9 basis, and difference is only that each coil (3) drives two coil pipes (2c) separately, and all the other structural principles are all identical, not in repetition.
The present embodiment can increase power further, reduce power density, is applicable to Large Oil heater.
The above is only preferred embodiment of the present invention, not imposes any restrictions the present invention, and all technical spirit according to the present invention, to any simple modification of above embodiment, equivalents and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. the device that liquid is heated, be made up of inductor, coil (2), high frequency electric source, controller etc., inductor is hollow closed structure, there are inlet (4) or (6), and with liquid outlet (5) or (7), liquid can be filled with wherein, it is characterized in that:
The material that inductor is high by magnetic conductivity, resistivity is low is made, and inductor self forms the iron core of a closed magnetic circuit, has on this iron core of one or more coil encircling;
Inlet and liquid outlet are made up of the material that magnetic conductivity is low.
2. device according to claim 1, is characterized in that:
Inductor comprises a concave shape casing (1a) and one section of coil pipe (2), and coil pipe embeds in the breach of concave shape casing and is tightly connected, and both inside are all hollow and are communicated with.
3. device according to claim 1, is characterized in that:
Inductor comprise two sections of parallel placements, the extra heavy pipe road (1b) as water tank, two sections or more coil pipe (2) and end caps (12); Coil pipe (2) is positioned between two extra heavy pipe roads (1b), is connected with two extra heavy pipe road vertical seal; End cap (12) is positioned at extra heavy pipe road (1b) end face, is tightly connected with extra heavy pipe road; Each pipe inside is all hollow and is communicated with.
4. device according to claim 1, is characterized in that:
Inductor, for ease of the single piece of casting, containing upper and lower two cavitys (1d), has the coil pipe (2) of two or more hollow to be communicated with between two cavitys; Upper cavity upward opening, lower chamber under shed, opening direction and coil pipe axis being parallel; The opening of upper and lower cavity is closed by cover plate (12a).
5. device according to claim 3 or 4, is characterized in that:
Its coil pipe (2) is divided into two groups, lays respectively at both sides; Wherein one group of uneasiness installs coil, only as fluid passage; Another group comprises two or more coil pipe (2), and install equivalent amount coil (3), these coil currents have appropriate phase, make this group coil pipe have closed magnetic path of one's own.
6. device according to claim 1, is characterized in that:
Inductor is made up of the pipeline of two-way or more by fluid, and pipeline self forms a closed magnetic circuit.
7. device according to claim 1 or 6, is characterized in that:
Inductor is formed by connecting by two coil pipes (2a) and two heating tube tube connectors (8), both conductive magneto-conductive materials; Coil (3) on two coil pipes (2a) passes to phase place inverse current, makes himself to form a closed magnetic circuit;
Upper end tube connector (8) connects water tank (1) by heating tube liquid outlet (7); Lower end tube connector (8) connects water tank (1) by heating tube inlet (6); Lower end tube connector (8) outside is also provided with circulating pump (9).
8. device according to claim 6, is characterized in that:
Inductor is made up of U-shaped coil pipe (2b) and heating tube connecting plate (10), is all conductive magneto-conductive material, forms a closed magnetic circuit; Cylinder manifold (11) or heating tube connecting plate (10) there is groove, inlet (4) and liquid outlet (5) are also installed; Cylinder manifold (11) and heating tube connecting plate (10) are involutory forms the passage being communicated with each U-shaped coil pipe (2) and liquid in-out mouth afterwards.
9. device according to claim 6, is characterized in that:
Inductor is formed by connecting by two or more coil pipe (2c) and two heating tube tube connectors (8), both conductive magneto-conductive materials, forms closed magnetic circuit; Coil pipe (2c) is in solenoid shape, and coil (3) is worn around in solenoid.
10. device according to claim 9, is characterized in that:
Each coil (3) is worn around in two solenoids.
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| CN201610021991.0A CN105485891A (en) | 2016-01-14 | 2016-01-14 | Induction heater with closed magnetic circuit |
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| CN106037477A (en) * | 2016-07-26 | 2016-10-26 | 潘颖 | Boiled water straight out water dispenser |
| CN107514806A (en) * | 2017-09-30 | 2017-12-26 | 付军伟 | A kind of high frequency magnetic energy electric boiler of parallel heating |
| CN109595789A (en) * | 2019-02-13 | 2019-04-09 | 深圳热鑫能源科技有限公司 | A kind of horizontal hot water machine |
| WO2020133099A1 (en) * | 2018-12-27 | 2020-07-02 | 英都斯特(无锡)感应科技有限公司 | Continuous induction heating reactor |
| WO2020133100A1 (en) * | 2018-12-27 | 2020-07-02 | 江南大学 | Intermittent inductive thermal reactor |
| CN112665186A (en) * | 2021-01-13 | 2021-04-16 | 成都同创恒合节能科技有限公司 | Combined electromagnetic heating heat supply baking system for multiple regions |
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| CN112869222A (en) * | 2021-01-13 | 2021-06-01 | 成都同创恒合节能科技有限公司 | Cooperative electromagnetic heating system |
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| CN112741359A (en) * | 2021-01-13 | 2021-05-04 | 成都同创恒合节能科技有限公司 | Baking system adopting electromagnetic heating for heat supply |
| CN112869223A (en) * | 2021-01-13 | 2021-06-01 | 成都同创恒合节能科技有限公司 | Baking system adopting cooperative electromagnetic heating for heat supply |
| CN112869222A (en) * | 2021-01-13 | 2021-06-01 | 成都同创恒合节能科技有限公司 | Cooperative electromagnetic heating system |
| CN113832312A (en) * | 2021-09-01 | 2021-12-24 | 河南中原特钢装备制造有限公司 | Variable-diameter shell variable-frequency induction heat treatment process |
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