CN204316765U - Flat filament heating core - Google Patents
Flat filament heating core Download PDFInfo
- Publication number
- CN204316765U CN204316765U CN201520000770.6U CN201520000770U CN204316765U CN 204316765 U CN204316765 U CN 204316765U CN 201520000770 U CN201520000770 U CN 201520000770U CN 204316765 U CN204316765 U CN 204316765U
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Abstract
The utility model relates to flat filament heating core, comprise core body, thermocouple, extraction terminal, lead-out wire body, fin, heating wire, it is characterized in that core body entirety is cylindrical, center hollow, thermocouple is arranged on core body central authorities, extraction terminal, lead-out wire body are arranged on core body side, extraction terminal, lead-out wire body, thermocouple axis direction are parallel with core body axis direction, draw terminal and be fixed on core body one end, lead-out wire body runs through core body, thermocouple is deep in core body, and core body is provided with multiple tracks fin, heating wire is spirally wrapped around on core body.The utility model is by installing in heating core inside the internal temperature that heating core measured by a thermocouple, limiting temperature can be no more than by setting the internal temperature controlling heating core, thus extend the useful life of heating core, reach electric heating core small size, super high power, hot environment, the object of long life.
Description
Technical field
The utility model relates to technical field of mechanical equipment, specifically flat filament heating core.
Background technology
At present, the heating core in known electric heating tube is made up of resistance wire, insulating ceramics, extraction electric wire.Resistance wire is through above pottery and fixes, and draws one end of electric wire and connects, and the other end of drawing electric wire is linked outside electrothermal tube and is connected with power supply, and after switching on power, heating core is now started working generation heat.But the overall dimension of the electric heating tube needed under some particular surroundingss is smaller, and required power is very large, and temperature is also very high.The power of the middle-size and small-size high-temperature electric heating tube of such routine does not just reach, if want the power of the electric heating tube of routine to increase, the heating core of heating tube inside also will increase, so the overall dimension of this electric heating tube also will increase, and undersized electric heating tube can only be installed above equipment, if install conventional undersized electric heating tube, so power does not just reach, cause serviceability temperature to rise slowly, rise less than required serviceability temperature.Just need electrothermal tube inside that the electric heating core of ultra high power is installed in this case, but also the heat that heating core is produced that will be very fast very fast export to heating tube outside, the use of equipment could be met like this.
This heating tube is commonly used in high-accuracy cast industry, is used for dissolving non-ferrous metal solution, higher to the requirement of power and temperature, could use under needing metallic solution to remain on stationary temperature environment.On production line, speed of production is faster, inside melting furnace provide non-ferrous metal solution speed also faster, the speed of production above production line could be met like this, and along with the development of science and technology, the speed of production of streamline is improving constantly, and equipment profile is in the trend walking to reduce.Thus just need the electric heating core of small size, ultra high power, only in this way could meet the needs above production line.Although more existing technology are that heater strip is first wound in helical form, and then be wrapped on core body, like this and to heater strip own material require stricter, also be unfavorable for mechanization production simultaneously, also do not have a kind of easy to process at present, structure is simple, is easy to the ultra high power electric heating core that firing rate is fast, volume is little of automation processing.
Utility model content
The utility model, just for above technical problem, provides the ultra high power flat filament heating core of the electric heating tube inside of a kind of small size, super high power, high-temperature.
The utility model realizes mainly through following technical scheme.
Flat filament heating core, comprise core body, thermocouple, draw terminal, lead-out wire body, fin, heating wire, it is characterized in that core body entirety is cylindrical, center hollow, thermocouple is arranged on core body central authorities, draw terminal, lead-out wire body is arranged on core body side, draw terminal, lead-out wire body, thermocouple axis direction is parallel with core body axis direction, draw terminal and be fixed on core body one end, lead-out wire body runs through core body, thermocouple is deep in core body, core body is provided with multiple tracks fin, heating wire is spirally wrapped around on core body, fill with filler between described core body and heating wire.Heating wire cross section is rectangular.Heating wire adopts high temperature alloy resistance bandlet to make.Filler between core body and heating wire selects hexagonal boron nitride to make.
The utility model adopts to stand and does heater around spiral type high temperature alloy resistance bandlet in electric heating core, and above insulation high-temperature-resistant ceramic frame, the benefit of bandlet is to compare the material that more resistance wire put into by round silk inside equal space.That is just more resistance bandlet material can be entered inside limited space like this, the surface area of the bandlet of known same cross-sectional area is also much bigger than the surface area of circle silk, and the material of the bandlet entered inside equal space is much more a lot of than circle silk again, the surface area of the bandlet like this in equal space will be more much bigger than the surface area of round silk, surface area is large, heating area is larger, under same surface loading, the power of the heating core designed as heater with bandlet than with circle silk as heater design much bigger, so the power of traditional electrical heating core is just much bigger relatively.Power super large, the heat that electric heating core produces is also many, in order to produced heat is exported to outside heating tube as soon as possible, a kind of material also will be filled in the inside, this material at high temperature must have insulation, high temperature resistant, heat conduction these features fast, traditional packing material is magnesium oxide, or do not fill, allow air conduction, but the heat-transfer rate of magnesium oxide and air is fast not, be used in above low power electric heating core all right, power super large is just done for, the words that heat-transfer rate does not catch up with, the internal heat of heating core can be accumulated, temperature rises higher and higher, the temperature that oversteps the extreme limit will be burnt heating core.After flat filament heating core described in the utility model adds electrothermal tube, what adopt is that hexagonal boron nitride is as packing material, insulate, high temperature resistant, these several respects of heat conduction are all fine, hexagonal boron nitride is one of material that in ceramic material, heat conduction is maximum, thermal conductivity is ten times of quartz, and high thermal conductivity coefficient hot-pressed product is that 33W/M.K is the same with pure iron; The coefficient of expansion is equivalent to quartz, is minimum in pottery, and the thermal coefficient of expansion on c-axis direction is 41 × 10
6/ C and be-2.3 × 10 on d direction of principal axis
6/ C, so thermal shock resistance is fine.Hexagonal boron nitride is also high temperature insulating material best in pottery, puncture voltage 3KV/MM, is 2.5 × 10 during low-dielectric loss 108Hz
-4, dielectric constant is 4, can microwave and infrared ray thoroughly.So just meet as packing material the requirement that volume is little, power is large, temperature is high with six points of boron nitride powders, but in order to the limiting temperature preventing electric heating core inner temperature to be elevated to resistance material, easily electric heating core is burnt, the utility model is also by installing in heating core inside the internal temperature that heating core measured by a thermocouple, limiting temperature can be no more than by setting the internal temperature controlling heating core, thus extend the useful life of heating core, reach electric heating core small size, super high power, hot environment, the object of long life.
Accompanying drawing explanation
In accompanying drawing, Fig. 1 is the utility model structural representation, and Fig. 2 is the schematic cross-section that the utility model is applicable to three-phase electricity, and Fig. 3 is the core section schematic diagram that the utility model is applicable to three-phase electricity, Fig. 4 is the core section schematic diagram that the utility model is applicable to two-phase electricity, wherein:
1-core body, 2-thermocouple, 3-draw terminal, 4-lead-out wire body, 5-fin, 6-heating wire.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Flat filament heating core, comprise core body 1, thermocouple 2, draw terminal 3, lead-out wire 4, fin 5, heating wire 6, it is characterized in that core body 1 is overall cylindrical, center hollow, thermocouple 2 is arranged on core body 1 central authorities, draw terminal 3, lead-out wire 4 is arranged on core body 1 side, draw terminal 3, lead-out wire 4, thermocouple 2 axis direction is parallel with core body 1 axis direction, draw terminal 3 and be fixed on core body 1 one end, lead-out wire 4 runs through core body 1, thermocouple 2 is deep in core body 1, core body 1 is provided with multiple tracks fin 5, heating wire 6 is spirally wrapped around on core body 1, fill with filler between described core body 1 and heating wire 6.Heating wire 6 cross section is rectangular.Heating wire 6 adopts high temperature alloy resistance bandlet to make.Filler between core body 1 and heating wire 6 selects hexagonal boron nitride to make.
The utility model adopts to stand and does heating wire 6 around spiral type high temperature alloy resistance bandlet in electric heating core, and above the core body 1 of insulation high-temperature-resistant, the benefit of bandlet is to compare the material that more resistance wire put into by round silk inside equal space.That is just more resistance bandlet material can be entered inside limited space like this, the surface area of the bandlet of known same cross-sectional area is also much bigger than the surface area of circle silk, and the material of the bandlet entered inside equal space is much more a lot of than circle silk again, the surface area of the bandlet like this in equal space will be more much bigger than the surface area of round silk, surface area is large, heating area is larger, under same surface loading, the power of the heating core designed as heater with bandlet than with circle silk as heater design much bigger, so the power of traditional electrical heating core is just much bigger relatively.Power super large, the heat that electric heating core produces is also many, in order to produced heat is exported to outside heating tube as soon as possible, a kind of material also will be filled in the inside, this material at high temperature must have insulation, high temperature resistant, heat conduction these features fast, traditional packing material is magnesium oxide, or do not fill, allow air conduction, but the heat-transfer rate of magnesium oxide and air is fast not, be used in above low power electric heating core all right, power super large is just done for, the words that heat-transfer rate does not catch up with, the internal heat of core body 1 can be accumulated, temperature rises higher and higher, the temperature that oversteps the extreme limit will be burnt core body 1.After flat filament heating core described in the utility model adds electrothermal tube, what adopt is that hexagonal boron nitride is as packing material, insulate, high temperature resistant, these several respects of heat conduction are all fine, hexagonal boron nitride is one of material that in ceramic material, heat conduction is maximum, thermal conductivity is ten times of quartz, and high thermal conductivity coefficient hot-pressed product is that 33W/M.K is the same with pure iron; The coefficient of expansion is equivalent to quartz, is minimum in pottery, and the thermal coefficient of expansion on c-axis direction is 41 × 10
6/ C and be-2.3 × 10 on d direction of principal axis
6/ C, so thermal shock resistance is fine.Hexagonal boron nitride is also high temperature insulating material best in pottery, puncture voltage 3KV/MM, is 2.5 × 10 during low-dielectric loss 108Hz
-4, dielectric constant is 4, can microwave and infrared ray thoroughly.So just meet as packing material the requirement that volume is little, power is large, temperature is high with six points of boron nitride powders, but in order to the limiting temperature preventing electric heating core inner temperature to be elevated to resistance material, easily electric heating core is burnt, the utility model is by installing in core body 1 inside the internal temperature that core body 1 measured by a thermocouple 2, limiting temperature can be no more than by setting the internal temperature controlling core body 1, thus extend the useful life of flat filament heating core, reach flat filament electric heating core small size, super high power, hot environment, the object of long life.
Above-described embodiment is only for illustrating technical conceive of the present utility model and feature; the purpose of this utility model is mainly person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection range of the present utility model.
Claims (4)
1. flat filament heating core, comprise core body, thermocouple, draw terminal, lead-out wire body, fin, heating wire, it is characterized in that core body entirety is cylindrical, center hollow, thermocouple is arranged on core body central authorities, draw terminal, lead-out wire body is arranged on core body side, draw terminal, lead-out wire body, thermocouple axis direction is parallel with core body axis direction, draw terminal and be fixed on core body one end, lead-out wire body runs through core body, thermocouple is deep in core body, core body is provided with multiple tracks fin, heating wire is spirally wrapped around on core body, fill with filler between described core body and heating wire.
2. flat filament heating core according to claim 1, is characterized in that described heating wire cross section is rectangular.
3. flat filament heating core according to claim 1, is characterized in that described heating wire adopts high temperature alloy resistance bandlet to make.
4. flat filament heating core according to claim 1, is characterized in that the filler between described core body and heating wire selects hexagonal boron nitride to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520000770.6U CN204316765U (en) | 2015-01-04 | 2015-01-04 | Flat filament heating core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520000770.6U CN204316765U (en) | 2015-01-04 | 2015-01-04 | Flat filament heating core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204316765U true CN204316765U (en) | 2015-05-06 |
Family
ID=53139059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520000770.6U Expired - Fee Related CN204316765U (en) | 2015-01-04 | 2015-01-04 | Flat filament heating core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204316765U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104582025A (en) * | 2015-01-04 | 2015-04-29 | 苏州伟热电器科技有限公司 | Flat filament heating core |
-
2015
- 2015-01-04 CN CN201520000770.6U patent/CN204316765U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104582025A (en) * | 2015-01-04 | 2015-04-29 | 苏州伟热电器科技有限公司 | Flat filament heating core |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20160104 |