CN207117992U - A kind of electric heating tube of the high power density with thermal cut-off - Google Patents
A kind of electric heating tube of the high power density with thermal cut-off Download PDFInfo
- Publication number
- CN207117992U CN207117992U CN201720728700.1U CN201720728700U CN207117992U CN 207117992 U CN207117992 U CN 207117992U CN 201720728700 U CN201720728700 U CN 201720728700U CN 207117992 U CN207117992 U CN 207117992U
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- China
- Prior art keywords
- thermal cut
- draw rod
- silica gel
- electric heating
- power density
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Abstract
It the utility model is related to a kind of electric heating tube of the high power density with thermal cut-off, draw rod, thermal cut-off including outer, interior draw rod, electrothermal tube, heating wire, it is described outer to draw rod and thermal cut-off upper end lead riveting, inside draw rod and thermal cut-off lower end lead riveting, be processed into fuse component；Draw rod lower end in described fuse component and be welded to connect fixation with heating wire, magnesia powder is filled between the section and electrothermal tube, plastic sheath is cased with outside fuse component, plastics set upper side is equipped with silica gel piece, and filled with sealing resin between insulator and silica gel piece, it is tightly fastened by resin solidification, making insulator, drawing rod, electric heating inside pipe wall and silica gel piece outside；The beneficial effects of the utility model are：The silk power density of heating wire under the conditions of equal pipe range can be effectively reduced using Novel electric hot wire structure, and resin double sealing structure is added using silica gel piece, sealing position heat resistance is improved, ensures life of product.
Description
Technical field
The utility model belongs to electric heating tube technical field, more particularly to a kind of electricity of the high power density with thermal cut-off adds
Heat pipe.
Background technology
Band thermal cut-off electric heating tube uses cylinder not reducing heating wire structure and resin seal structure at present, close in electric power
Under conditions of degree is high (20~30W/cm2), thermal cut-off easily disconnects in advance, and service life is poor, (dry under abnormal working conditions
Burn), the easy fracture of wire of resistance wire, security is poor；Existing resin seal heatproof is relatively low, under the conditions of high power density, has safety hidden
Suffer from.
The content of the invention
The purpose of this utility model is to overcome the shortcomings of the prior art, and provides a kind of high power density band hot melt
The electric heating tube of disconnected device, improves the security performance under product exception use condition.
The purpose of this utility model is completed by following technical solution, including outer drawn rod, thermal cut-off, interior drawn
Rod, electrothermal tube, heating wire, it is described it is outer draw rod and thermal cut-off upper end lead riveting, inside draw rod and thermal cut-off lower end
Lead riveting, is processed into fuse component；Draw rod lower end in described fuse component to be welded to connect admittedly with heating wire
It is fixed, magnesia powder to be filled between the section and electrothermal tube, plastic sheath is cased with outside fuse component, plastics set upper side is equipped with silica gel piece,
And filled with sealing resin between insulator and silica gel piece, by resin solidification, making insulator, drawing rod outside, in electrothermal tube
Wall and silica gel piece are tightly fastened.
Preferably, described heating wire uses reducing winding structure.
Preferably, the diameter of the top and bottom of described plastic sheath is more than the diameter of interlude, and the interlude is
The inside pipe wall of straightway, top and bottom and electrothermal tube is interference fitted, and has thermal cut-off in interlude.
Preferably, described insulator set draws on rod outside, and fixation is inlayed with the inside pipe wall of electrothermal tube.
The beneficial effects of the utility model are：Electricity under the conditions of equal pipe range can effectively be reduced using Novel electric hot wire structure
The silk power density of heated filament, solve the problems, such as thermal fuse disconnect in advance with dry combustion method, fracture of wire under resistance wire abnormal working conditions, and
Using silica gel piece plus resin double sealing structure, sealing position heat resistance is improved, ensures life of product.
Brief description of the drawings
Fig. 1 is main view cross-sectional view of the present utility model.
Fig. 2 is fuse component structural representation of the present utility model.
Fig. 3 is practical application structural representation of the present utility model.
Label in accompanying drawing is respectively：1st, rod is drawn outside；2nd, insulator；3rd, electrothermal tube；4th, sealing resin；5th, silica gel piece；6、
Plastic sheath；7th, thermal cut-off；8th, it is interior to draw rod；9th, heating wire；10th, magnesia powder.
Embodiment
Detailed introduction is done to the utility model below in conjunction with accompanying drawing：As shown in accompanying drawing 1 to 3, the utility model includes
It is outer draw rod 1, thermal cut-off 7, it is interior draw rod 8, electrothermal tube 3, heating wire 9, it is described outer to draw rod 1 and the upper end lead riveting of thermal cut-off 7
Connect in succession, inside draw rod 8 and the lower end lead riveting of thermal cut-off 7, be processed into fuse component, ensure that electrothermal tube 3 has heat
Fuse protection function.Draw the lower end of rod 8 in described fuse component and be welded to connect fixation with heating wire 9, the section and electrothermal tube 3
Between fill magnesia powder 10, be cased with plastic sheath 6 outside fuse component, the upper end of plastic sheath 6 be equipped with silica gel piece 5, and with sealing tree
Fat 4 is filled between insulator 2 and silica gel piece 5, by resin solidification, make insulator 2, draw outside rod 1, the inwall of electrothermal tube 3 and
Silica gel piece 5 is tightly fastened；Effectively improving the heat resistance of sealing position, sealing resin and insulator will be inside electrothermal tube 3 and outer
Boundary's environment isolation, effectively prevents outside air from entering inner tube, ensures that the insulating properties of electrothermal tube 3 are reliable；Improve the safety of product
Reliability, improve the life-span.
Described heating wire 9 uses reducing winding structure, under the conditions of equal pipe range Same Efficieney, can effectively reduce resistance
The silk power density of silk, so as to reduce the temperature that resistance wire passes to thermal cut-off position, improve the thermal cut-off life-span.
The diameter of the top and bottom of described plastic sheath 6 is more than the diameter of interlude, and the interlude is straightway, on
End and lower end and the inside pipe wall of electrothermal tube 3 are interference fitted, and have thermal cut-off 7 in interlude；Ensureing between current-carrying part and tube wall
Insulation and while electrical strength, when also ensure that straight tube roll-in, the top and bottom of plastic sheath 6 after roll-in with inside pipe wall mistake
It is full of cooperation, the thermal cut-off 7 of interlude does not stress, and avoids the potential safety hazard caused by damaging thermal cut-off 7.
2 sets described of insulator draws on rod 1 outside, and inlays fixation with the inside pipe wall of electrothermal tube 3.
The utility model is not limited to above-mentioned embodiment, makees any change no matter being formed in its shape or material, all
It is to use structure design provided by the utility model, is all a kind of deformation of the present utility model, is considered as new in this practicality
Within type protection domain.
Claims (4)
1. a kind of electric heating tube of the high power density with thermal cut-off, including draw rod outside（1）, thermal cut-off（7）, interior draw rod（8）、
Electrothermal tube（3）, heating wire（9）, it is characterised in that：It is described outer to draw rod（1）And thermal cut-off（7）Upper end lead riveting,
Inside draw rod（8）And thermal cut-off（7）Lower end lead riveting, is processed into fuse component；Described fuse component it is interior
Draw rod（8）Lower end and heating wire（9）It is welded to connect fixation, and and electrothermal tube（3）Between fill magnesia powder（10）, fuse group
Plastic sheath is cased with outside part（6）, plastic sheath（6）Upper end is equipped with silica gel piece（5）, and use sealing resin（4）In insulator（2）And silica gel
Piece（5）Between fill, by resin solidification, making insulator（2）, draw rod outside（1）, electrothermal tube（3）Inwall and silica gel piece（5）Tightly
Close fixation.
2. electric heating tube of the high power density with thermal cut-off according to claim 1, it is characterised in that：Described electric heating
Silk（9）Using reducing winding structure.
3. electric heating tube of the high power density with thermal cut-off according to claim 1, it is characterised in that：Described plastics
Set（6）The diameters of top and bottom be more than the diameter of interlude, and the interlude is straightway, top and bottom and electrothermal tube
（3）Inside pipe wall interference fit, have thermal cut-off in interlude（7）.
4. electric heating tube of the high power density with thermal cut-off according to claim 1, it is characterised in that：Described insulation
Son（2）Set draws rod outside（1）On, and and electrothermal tube（3）Inside pipe wall inlay fixation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720728700.1U CN207117992U (en) | 2017-06-21 | 2017-06-21 | A kind of electric heating tube of the high power density with thermal cut-off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720728700.1U CN207117992U (en) | 2017-06-21 | 2017-06-21 | A kind of electric heating tube of the high power density with thermal cut-off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207117992U true CN207117992U (en) | 2018-03-16 |
Family
ID=61578578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720728700.1U Active CN207117992U (en) | 2017-06-21 | 2017-06-21 | A kind of electric heating tube of the high power density with thermal cut-off |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207117992U (en) |
-
2017
- 2017-06-21 CN CN201720728700.1U patent/CN207117992U/en active Active
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