CN201688691U - Water cooling-free intermediate frequency furnace of inductor - Google Patents
Water cooling-free intermediate frequency furnace of inductor Download PDFInfo
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- CN201688691U CN201688691U CN2010201649149U CN201020164914U CN201688691U CN 201688691 U CN201688691 U CN 201688691U CN 2010201649149 U CN2010201649149 U CN 2010201649149U CN 201020164914 U CN201020164914 U CN 201020164914U CN 201688691 U CN201688691 U CN 201688691U
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- water
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- inductor
- frequency furnace
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Abstract
The utility model provides a water cooling-free intermediate frequency furnace of an inductor which belongs to the technical field of electric furnace designing and manufacturing. The water cooling-free intermediate frequency furnace of the inductor mainly consists of a furnace body provided with a fixed bracket and a furnace cover matched with the port of the furnace body; a crucible is arranged in the furnace body; and the outer wall of the crucible and the inner wall of the furnace cover are respectively provided with a fireproof layer and an insulating layer in sequence; an inductor mainly consisting of an insulating terminal, a plurality of water cooling rings and an induction coil is arranged at the periphery of the insulating layer of the crucible; moreover, the insulating layer is filled between the water cooling rings and the induction coil. The water cooling-free intermediate frequency furnace of the inductor mainly solves the technical problem of high energy consumption of the current intermediate frequency furnace, has the advantages of simple structure, and low cost, and realizes excellent energy saving during the working process of the intermediate frequency furnace.
Description
Technical field
The utility model belongs to electric furnace design and manufacturing technology field, is specifically related to the intermediate frequency furnace that a kind of inductor does not have water-cooled.
Background technology
Intermediate frequency furnace is a kind of melting furnace by the electromagnetic induction heating metal.Principle is with the three-phase main-frequency alternating current, become direct current after the rectification, again direct current is become adjustable electric current of intermediate frequency, supply with intermediate frequency (0.2～10kHz) alternating current that flows through in the inductor, in inductor, produce the highdensity magnetic line of force, and the metal material that holds in the cutting induction coil, make METAL HEATING PROCESS thereby in metal material, produce very big eddy current.
Most rectangle or the circular hollow copper pipes of adopting of the inductor of existing intermediate frequency furnace are manufactured, because the existence of alternating current kelvin effect, electric current is limited at depth of penetration one deck.Increase cross-sectional area of conductor, CURRENT DISTRIBUTION is not improved because of the expansion in cross section, therefore can not reduce the thermal losses of electric current with the method that increases cross-sectional area of conductor.In addition, the inductor of this kind structure is very big because of the electric current that passes through, and its average current density is 22～60A/mm
2, and because kelvin effect, thereby make inductor self produce a large amount of heats, this heat accounts for 20%～30% of total power input greatly, causes the loss of energy.Simultaneously, overheated for preventing inductor, need pass to cooling water in the hollow copper tubing of inductor to realize the cooling of inductor and body of heater, need to dispose a large amount of cooling systems for this reason.The cooling system structure of this kind inductor configurations is numerous and jumbled, processing and manufacturing cost height.In addition,, adopt a large amount of copper bars, adopt the water-cooled copper bar sometimes, cause copper and waste of electric energy because electric current is very big.
Magnetic conductor in the existing intermediate frequency furnace is distributed in around the inductor at interval, and at bell and bottom of furnace body magnet is not set all, thereby makes that the leakage field phenomenon is more serious, and the energy loss that causes the intermediate frequency furnace body of heater to cause is big; And make body of heater bigger, be unfavorable for environmental protection for the magnetic radiation amount of surrounding environment.
Summary of the invention
The purpose of this utility model is to provide a kind of inductor not have the intermediate frequency furnace of water-cooled, has mainly solved the high technical problem of intermediate frequency furnace energy consumption of the prior art.
The utility model is as follows at the technical solution of above-mentioned technical problem:
A kind of inductor does not have the intermediate frequency furnace of water-cooled, comprises body of heater that is provided with fixed mount and the bell that matches with the port of body of heater; Be provided with crucible in the described body of heater; The inwall of described crucible and bell and outer wall are provided with flame retardant coating and thermal insulation layer respectively successively; The outer periphery of the thermal insulation layer of described crucible has inductor; Described inductor is arranged at the inboard of the magnetic conductor of fixedlying connected with fixed mount; Its special character is: described inductor comprises two, three or more induction coil, insulated column, two, three or more water-cooling ring of fixedlying connected and arranging at interval with insulated column; Described induction coil is coiled into by the copper strips that has insulating barrier, and this induction coil is embedded between the adjacent water-cooling ring; Be filled with insulating barrier between described water-cooling ring and the induction coil.
The above water-cooling ring or induction coil parallel connection.
The above water-cooling ring or induction coil series connection.
It is good that the above thickness of insulating layer is set to 1～3mm.
The thickness of the copper strips that has insulating barrier of the above inductor is 20%～80% of the depth of current penetration.
The above water-cooling ring is " C " shape, and is provided with conducting copper plate so that the quick conduction of intermediate frequency furnace body of heater heat in the inboard of this water-cooling ring.
The above magnetic conductor is made of two, three or polylith iron core and iron core retainer plate.
The bottom of the above body of heater is provided with the bottom annular iron core.
The periphery of the thermal insulation layer of the above bell is provided with apical ring shape iron core.
The above bottom annular iron core and apical ring shape iron core are by two, three or polylith iron core formation.
Advantage of the present utility model is as follows:
1. energy consumption is low: the utility model adopts the copper strips of mutually insulated to make induction coil, and the current density by this induction coil self is 2～3A/mm
2Thereby, make the loss of inductor self-energy only be 2～4% of input power.
2. simple in structure, cost is low: it is few that the inductor that the utility model provides self produces heat, only depend on natural convection air just can reach temperature required thermal balance, so this inductor itself need not to prepare a large amount of cooling systems.
3. leakage field is few: the magnetic conductor of the inductor that the utility model provides is distributed on around the inductor, and be arranged at the space of inductor outer circumference more than 80%, all establish the magnet of respective width at the inductor two ends, top magnet and end magnet, make that its leakage field is few, thereby the energy loss that the body of heater that makes intermediate frequency furnace causes reduces, and intermediate frequency furnace also reduces for the magnetic radiation amount of surrounding environment simultaneously.
4. applied widely: the inductor that the utility model provides adopts modular organization, for the intermediate frequency furnace of specified vol, when different capacity requires, need not too much calculating, and only needing increases the induction coil number or reduce, to reach the power demand requirement.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the vertical view of body of heater of the present utility model;
Fig. 3 magnetizer structure schematic diagram of the present utility model;
Induction coil structural representation in Fig. 4 inductor of the present utility model;
Fig. 5 the utility model water power is introduced fundamental diagram;
The existing intermediate frequency furnace of Fig. 6 magnetic field imaginary component Butut;
The existing intermediate frequency furnace of Fig. 7 magnetic field real part distribution map;
Fig. 8 the utility model magnetic field imaginary component Butut;
Fig. 9 the utility model magnetic field real part distribution map.
Description of reference numerals is as follows:
The 1-body of heater, 2-bell, 3-inductor, 4-fixed mount, 5-magnetic conductor, 6-crucible, the 11-flame retardant coating, 12-thermal insulation layer, 13-bottom annular iron core, 21-apical ring shape iron core, 31-insulated column, the 32-water-cooling ring, 33-induction coil, 34-insulating barrier, 35-conducting copper plate, 51-iron core retainer plate.
The specific embodiment
Operation principle of the present utility model is: pass to intermediate frequency (0.2～10kHz) alternating current by giving the induction coil 33 in the inductor 3, according to magnetic field coupling principle, can produce corresponding induced-current in the metal charge is eddy current, causes the furnace charge heating, heats up until thawing.Wherein, crucible 6 is used for the splendid attire molten steel, makes with refractory material: intermediate frequency power supply produces the midfrequent AC electric current by rectification, inversion, and this midfrequent AC electric current is carried in the two ends of induction coil 33, promptly between the electric current of induction coil 33 inlet and the electric current outlet.And the energy source of intermediate frequency power supply is in high-voltage board and rectifier transformer.Because body of heater 1, induction coil 33 and intermediate frequency power supply all have power loss in running, can produce a large amount of heat, therefore to introduce water-cooling system and cool off body of heater 1, induction coil 33 and intermediate frequency power supply.
Below with reference to accompanying drawing content of the present utility model is explained in detail.
Referring to Fig. 1, a kind of inductor does not have the intermediate frequency furnace of water-cooled, mainly is made of body of heater 1 and the bell 2 that matches with the port of body of heater 1.Body of heater 1 is provided with fixed mount 4, and this fixed mount 4 is bolted to connection with the magnetic conductor 5 of body of heater 1.This magnetic conductor 5 mainly is made of polylith iron core and iron core retainer plate 51, is about to use after the polylith iron core superposes iron core retainer plate 51 its reinforcing is one, and its structure is referring to Fig. 3.
Be provided with the crucible of making by refractory material 6 in the body of heater 1; The outer wall of this crucible 6 is provided with flame retardant coating 11 and thermal insulation layer 12 successively.The outer periphery of the thermal insulation layer 12 of crucible 6 has inductor 3; This inductor 3 is mainly by being fixed on the insulated column 31 and " C " shape water-cooling ring 32 of a plurality of parallel connections of arranging at interval, being embedded in the induction coil 33 between adjacent " C " shape water-cooling ring 32 and being filled in the insulating barrier 34 that thickness between " C " shape water-cooling ring 32 and the inductor 33 is about 1～3mm and constitute, referring to Fig. 1 and Fig. 2.Wherein induction coil 33 is to be coiled to form by the copper strips that has insulating barrier, referring to Fig. 4.Having the condition that the thickness of the copper strips of insulating barrier need satisfy is: 20%～80% of the depth of current penetration makes electric current radially evenly distribute along coil as far as possible.Adopt the copper strips of mutually insulated to make the inductor 3 of the modular of induction coil 33, making the current density by this induction coil 33 self only is 2～3A/mm
2Thereby, make the loss of inductor 3 self-energies only be 2～4% of input power.Pass to cooling water in " C " shape water-cooling ring 32 to realize the cooling of body of heater.In addition, " C " shape water-cooling ring 32 in the inductor 3 or induction coil 33 also can be designed to series connection or series connection and combination in parallel as the case may be, and its effect is equal to the situation of " C " shape water-cooling ring 32 or induction coil 33 parallel connections.
Simultaneously, the concrete structure of " C " shape water-cooling ring 32 can be according to the calculating of thermal field, and in conducting copper plate 35 of inner ring increase of this " C " shape water-cooling ring 32, the heat that is beneficial to body of heater is derived smoothly by conducting copper plate 35, and is overheated to prevent induction coil 33.
Referring to Fig. 5, the operation principle that the utility model water, electricity are introduced is that the leading-in end of induction coil 33 that each is independent is connected together, exit is connected together, then with total leading-in end and total the two poles of the earth of drawing termination power.Certainly, also can be one group with several induction coils 33 and be cascaded and form one group, again each group is connected in parallel, then with total leading-in end and total the two poles of the earth of drawing termination power.The leading-in end of " C " type water-cooling ring 32 that each is independent is connected together, and exit is connected together, then with total leading-in end and total leading-in end of drawing the total cooling water of termination and exit.Certainly, also several independent " C " type water-cooling ring 32 usefulness flexible pipes can be cascaded, form one group, the leading-in end with each group is connected together then, exit is connected together, then with total leading-in end and the total leading-in end and exit of drawing the total water-cooling ring 32 of termination.
In addition, the intermediate frequency furnace that the inductor that the utility model provides does not have water-cooled is provided with bottom annular iron core 13 in the bottom of body of heater 1, and the periphery of the thermal insulation layer 12 of bell 2 is provided with apical ring shape iron core 21.Wherein bottom annular iron core 13 and apical ring shape iron core 21 are formed by stacking by the polylith iron core.Therefore, this inductor does not have magnetic conductor 5, bottom annular iron core 13 and the apical ring shape iron core 21 common magnetic fields that form sealing of the intermediate frequency furnace of water-cooled, thereby has reduced the magnetic flux leakage of body of heater.
Referring to Fig. 6, Fig. 7, Fig. 8 and Fig. 9, by intermediate frequency furnace and the magnetic field real part of traditional intermediate frequency furnace and the comparison of imaginary component Butut that the utility model is provided, no matter the inductor that its result should demonstrate,prove the utility model to be provided does not have the intermediate frequency furnace of water-cooled from magnetic field real part, magnetic field imaginary component Butut, its leakage field seldom, thereby the energy loss that the body of heater that makes intermediate frequency furnace causes reduces greatly, intermediate frequency furnace also reduces for the magnetic radiation amount of surrounding environment simultaneously, is of value to environmental protection.
Claims (10)
1. an inductor does not have the intermediate frequency furnace of water-cooled, comprises body of heater (1) that is provided with fixed mount (4) and the bell (2) that matches with the port of body of heater (1); Be provided with crucible (6) in the described body of heater (1); Described crucible (6) is provided with flame retardant coating (11) and thermal insulation layer (12) respectively successively with (2) inwall and the outer wall of bell; The outer periphery of the thermal insulation layer (12) of described crucible (6) has inductor (3); Described inductor (3) is arranged at the inboard of the magnetic conductor (5) of fixedlying connected with fixed mount (4); It is characterized in that: described inductor (3) comprises two, three or more induction coil (33), insulated column (31), two, three or more water-cooling ring (32) of fixedlying connected and arranging at interval with insulated column (31); Described induction coil (33) is coiled into by the copper strips that has insulating barrier, and this induction coil (33) is embedded between the adjacent water-cooling ring (32); Be filled with insulating barrier (34) between described water-cooling ring (32) and the induction coil (33).
2. inductor according to claim 1 does not have the intermediate frequency furnace of water-cooled, it is characterized in that: described water-cooling ring (32) or induction coil (33) parallel connection.
3. inductor according to claim 1 does not have the intermediate frequency furnace of water-cooled, it is characterized in that: described water-cooling ring (32) or inductor (33) series connection.
4. do not have the intermediate frequency furnace of water-cooled according to the arbitrary described inductor of claim 1 to 3, it is characterized in that: described insulating barrier (34) thickness is 1～3mm.
5. inductor according to claim 4 does not have the intermediate frequency furnace of water-cooled, it is characterized in that: the thickness of the copper strips that has insulating barrier of described induction coil (33) is 20%～80% of the depth of current penetration.
6. inductor according to claim 5 does not have the intermediate frequency furnace of water-cooled, it is characterized in that: described water-cooling ring (32) is " C " shape, and is provided with conducting copper plate (35) in the inboard of this water-cooling ring (32).
7. inductor according to claim 1 does not have the intermediate frequency furnace of water-cooled, it is characterized in that: described magnetic conductor (5) is by two, three or polylith iron core and iron core retainer plate (51) formation.
8. inductor according to claim 7 does not have the intermediate frequency furnace of water-cooled, it is characterized in that: the bottom of described body of heater (1) is provided with bottom annular iron core (13).
9. inductor according to claim 8 does not have the intermediate frequency furnace of water-cooled, it is characterized in that: the periphery of the thermal insulation layer (12) of described bell (2) is provided with apical ring shape iron core (21).
10. inductor according to claim 9 does not have the intermediate frequency furnace of water-cooled, it is characterized in that: described bottom annular iron core (13) and apical ring shape iron core (21) are by two, three or polylith iron core formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201649149U CN201688691U (en) | 2010-04-21 | 2010-04-21 | Water cooling-free intermediate frequency furnace of inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201649149U CN201688691U (en) | 2010-04-21 | 2010-04-21 | Water cooling-free intermediate frequency furnace of inductor |
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| Publication Number | Publication Date |
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| CN201688691U true CN201688691U (en) | 2010-12-29 |
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| CN2010201649149U Expired - Fee Related CN201688691U (en) | 2010-04-21 | 2010-04-21 | Water cooling-free intermediate frequency furnace of inductor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313447A (en) * | 2011-10-25 | 2012-01-11 | 沈阳师范大学 | Medium-frequency induction heating furnace for smelting nonmetallic high-melting-point oxide |
| CN102829629A (en) * | 2011-06-16 | 2012-12-19 | 陆建平 | Industrial electric induction furnace |
| CN103673599A (en) * | 2013-06-18 | 2014-03-26 | 叶道平 | Medium-frequency induction furnace |
| CN104089482A (en) * | 2014-07-17 | 2014-10-08 | 白银有色集团股份有限公司 | Core-free electric furnace baking device and furnace baking process making use of core-free electric furnace baking device |
| CN104457242A (en) * | 2014-11-12 | 2015-03-25 | 合肥市瑞宏重型机械有限公司 | Composite cooling type electric furnace |
| CN111356254A (en) * | 2020-03-03 | 2020-06-30 | 富士电机株式会社 | Induction heating device |
-
2010
- 2010-04-21 CN CN2010201649149U patent/CN201688691U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829629A (en) * | 2011-06-16 | 2012-12-19 | 陆建平 | Industrial electric induction furnace |
| CN102313447A (en) * | 2011-10-25 | 2012-01-11 | 沈阳师范大学 | Medium-frequency induction heating furnace for smelting nonmetallic high-melting-point oxide |
| CN103673599A (en) * | 2013-06-18 | 2014-03-26 | 叶道平 | Medium-frequency induction furnace |
| CN104089482A (en) * | 2014-07-17 | 2014-10-08 | 白银有色集团股份有限公司 | Core-free electric furnace baking device and furnace baking process making use of core-free electric furnace baking device |
| CN104089482B (en) * | 2014-07-17 | 2016-03-30 | 白银有色集团股份有限公司 | A kind of centreless electric furnace furnace drying device and utilize the roast technic of this device |
| CN104457242A (en) * | 2014-11-12 | 2015-03-25 | 合肥市瑞宏重型机械有限公司 | Composite cooling type electric furnace |
| CN111356254A (en) * | 2020-03-03 | 2020-06-30 | 富士电机株式会社 | Induction heating device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20130421 |