CN202979335U - Electric heating tube with overheat protector and two ends pressed hermetically - Google Patents
Electric heating tube with overheat protector and two ends pressed hermetically Download PDFInfo
- Publication number
- CN202979335U CN202979335U CN 201220611123 CN201220611123U CN202979335U CN 202979335 U CN202979335 U CN 202979335U CN 201220611123 CN201220611123 CN 201220611123 CN 201220611123 U CN201220611123 U CN 201220611123U CN 202979335 U CN202979335 U CN 202979335U
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- metal tube
- electric heating
- tube
- heating tube
- eduction rod
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- Expired - Lifetime
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Abstract
The utility model relates to an electric heating tube with an overheat protector and two ends pressed hermetically. The electric heating tube comprises an outer lead rod, a plastic sleeve, a thermal cutoff, a metal tube and an inner lead rod. The plastic sleeve is mounted in the metal tube and sleeved outside the outer lead rod, the thermal cutoff and the inner lead rod, two ends of the plastic sleeve are larger in diameter, the middle of the plastic sleeve is a linear section with a small diameter, and the linear section is used for mounting the thermal cutoff. Teflon beads are arranged at a position, close to an end, on one side of the end face of the plastic sleeve. A reducing portion is arranged at a position, with the Teflon beads, on the metal tube, and a pressing portion is arranged at a position, with magnesium oxide, on the metal tube. The electric heating tube has the advantages that insulation and electric strength are guaranteed, the plastic sleeve is guaranteed against shaking when the electric heating tube is rolled, and the thermal cutoff is guaranteed against being stressed, so that potential safety hazards caused by damage of the thermal cutoff are avoided. By means of mechanical pressing, external air cannot enter the inner tube, and the insulating property of the electric heating tube cannot be weakened.
Description
Technical field
The utility model relates to the electric heating tube field, especially with the electric heating tube of overtemperature protection system and two ends compacting sealing.
Background technology
Present electric heating tube is good by metal tube, spiral resistance wire and thermal conductivity, the crystal magnesium oxide powder of good insulating etc. forms.Its operation principle is: high temperature resistant resistance silk equably distributes in the high temperature resistant stainless steel pipe, insert densely all good crystal magnesium oxide powder of heat conductivility and insulation property in the gap, this structure not only heat efficiency is high, and heating evenly, when having electric current to pass through in the high temperature resistant resistance silk, the heat that produces spreads to metal tube surface fast by the crystal magnesium oxide powder, then is delivered in the media such as water or air, reaches the purpose of heating.But mostly water heating electric heating tube is all without overtemperature protection system, in case electric heating tube dehydration dry combustion method, will damage device equipment, even can injure personal safety; Overtemperature protection system is arranged, only be provided with a thermal cut-off, temperature-controlled precision is not high, and reliability is unstable; And the hermetically-sealed construction complex process of thermal cut-off and electrothermal tube, cost is high.
Summary of the invention
The utility model will solve the shortcoming of above-mentioned prior art just, and a kind of electric heating tube with overtemperature protection system and two ends compacting sealing is provided.
The utility model solves the technical scheme that its technical problem adopts: this electric heating tube with overtemperature protection system and two ends compacting sealing, comprise outer eduction rod, plastic sheath, thermal cut-off, metal tube and interior eduction rod, outer eduction rod, thermal cut-off and interior eduction rod riveting in metal tube, interior eduction rod and heating wire are welded to connect, described plastic sheath is arranged in metal tube and is sleeved on outside outer eduction rod, thermal cut-off and interior eduction rod, plastic sheath is that the two ends diameter is large, and middle one section is that the little straightway of diameter is used for mount thermal fuse; The close port of plastic sheath end face one side is provided with the Teflon pearl, and the Teflon pearl is arranged in metal tube and is sleeved on outside outer eduction rod, is provided with magnesia powder in the metal tube inner chamber of plastic sheath end face opposite side; Be provided with the reducing position on the metal tube of Teflon pearl position, be provided with the compacting position on the metal tube of magnesia powder position.
As preferably, described Teflon pearl and plastic sheath end face junction are provided with the O RunddichtringO.
As preferably, described overtemperature protection system is arranged on the one or both ends of metal tube.
The effect that the utility model is useful is: 1, plastic sheath to be designed to the two ends size large, middle one section (in thermal cut-off 5 is arranged) straightway that diameter is little, in the insulation and electrical strength that guarantee between current-carrying part and tube wall, guaranteed that also plastic sheath does not rock when metal tube is carried out roll-in, thermal cut-off does not stress, and avoids the potential safety hazard that causes because of the damage fuse.2, O RunddichtringO and outer eduction rod tight fit, Teflon pearl and outer eduction rod tight fit, by mechanical compaction is carried out at the reducing position, Teflon pearl and O RunddichtringO are out of shape also and outer eduction rod and metal tube interference fit, metal tube is inner isolated with external environment, effectively stop outside air to enter inner tube, guarantee that the insulation property of metal tube can not descend.3, carry out mechanical compaction to suppressing the position, make the density of magnesia powder higher, heat-conducting effect is better, not only guarantee the temperature-controlled precision of thermal cut-off, and the product that can make two thermal cut-ofves has almost identical fusing time and distributes, and under the abnormal conditions of dehydration dry combustion method, metal tube can accomplish that two thermal cut-ofves disconnect simultaneously, realize double insurance function truly, thereby improved the product safety reliability.4, to the mechanical compaction at compacting position, improved the heat conductivility of metal tube, not only can remove copper sheathing, save cost, and improved the ability of the water-fast dirt of metal tube, extend the useful life of metal tube.
Description of drawings
Fig. 1 is the structural representation of overtemperature protection system in the utility model;
Fig. 2 is overall structure schematic diagram of the present utility model.
Description of reference numerals: outer eduction rod 1, Teflon pearl 2, O RunddichtringO 3, plastic sheath 4, thermal cut-off 5, metal tube 6, interior eduction rod 7, magnesia powder 8, heating wire 9, reducing position 10, compacting position 11.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 2, this electric heating tube with overtemperature protection system and two ends compacting sealing comprises outer eduction rod 1, plastic sheath 4, thermal cut-off 5, metal tube 6 and interior eduction rod 7; Outer eduction rod 1, thermal cut-off 5 and interior eduction rod 7 rivetings in metal tube 6, interior eduction rod 7 is welded to connect with heating wire 9.As shown in Figure 2, described plastic sheath 4 is arranged in metal tube 6 and is sleeved on outside outer eduction rod 1, thermal cut-off 5 and interior eduction rod 7, plastic sheath 4 is that the two ends diameter is large, and middle one section is that the little straightway of diameter (the cross-sectional periphery axial direction linearly) is used for mount thermal fuse 5.The close port of plastic sheath 4 end face one sides is provided with Teflon pearl 2, and Teflon pearl 2 is arranged in metal tube 6 and is sleeved on outside outer eduction rod 1; Teflon pearl 2 and plastic sheath 4 end face junctions are provided with O RunddichtringO 3.Be provided with magnesia powder 8 in metal tube 6 inner chambers of plastic sheath 4 end face opposite sides.Be provided with reducing position 10 on the metal tube 6 of Teflon pearl 2 positions, be provided with compacting position 11 on the metal tube 6 of magnesia powder 8 positions.
As shown in Figure 2, described overtemperature protection system can be arranged on the one or both ends of metal tube, is arranged on the two ends of metal tube in the present embodiment.After installation at the reducing position 10 and compacting position 11 carry out mechanical compaction.By mechanical compaction is carried out at reducing position 10, Teflon pearl 2 and O RunddichtringO 3 are out of shape also and outer eduction rod 1 and metal tube 6 interference fit, metal tube 6 is inner isolated with external environment, effectively stop outside air to enter inner tube, the insulation property that guarantee metal tube can not descend, improve the security reliability of product, improve the life-span.Carry out mechanical compaction to suppressing position 11, make the density of magnesia powder 8 higher, heat-conducting effect is better, not only guarantee the temperature-controlled precision of thermal cut-off, and the product that can make two thermal cut-ofves has almost identical fusing time and distributes, and under the abnormal conditions of dehydration dry combustion method, metal tube can accomplish that two thermal cut-ofves disconnect simultaneously, realize double insurance function truly, thereby improved the product safety reliability.The mechanical compaction of suppressing position 11 has been improved simultaneously the heat conductivility of metal tube, not only can remove copper sheathing, saved cost, and improved the ability of the water-fast dirt of metal tube, extended the useful life of metal tube.
In addition to the implementation, the utility model can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection range of the utility model requirement.
Claims (3)
1. suppress with overtemperature protection system and two ends the electric heating tube that seals for one kind, comprise outer eduction rod (1), plastic sheath (4), thermal cut-off (5), metal tube (6) and interior eduction rod (7), outer eduction rod (1) in metal tube (6), thermal cut-off (5) and interior eduction rod (7) riveting, interior eduction rod (7) is welded to connect with heating wire (9), it is characterized in that: described plastic sheath (4) is arranged in metal tube (6) and is sleeved on outer eduction rod (1), outside thermal cut-off (5) and interior eduction rod (7), plastic sheath (4) is that the two ends diameter is large, middle one section is that the little straightway of diameter is used for mount thermal fuse (5), plastic sheath (4) end face one side is provided with Teflon pearl (2) near the port, Teflon pearl (2) is arranged in metal tube (6) and is sleeved on outside outer eduction rod (1), is provided with magnesia powder (8) in metal tube (6) inner chamber of plastic sheath (4) end face opposite side, be provided with reducing position (10) on the metal tube (6) of Teflon pearl (2) position, be provided with on the metal tube (6) of magnesia powder (8) position and suppress position (11).
2. the electric heating tube with the compacting sealing of overtemperature protection system and two ends according to claim 1 is characterized in that: described Teflon pearl (2) and plastic sheath (4) end face junction are provided with O RunddichtringO (3).
3. the electric heating tube with the compacting sealing of overtemperature protection system and two ends according to claim 1, it is characterized in that: described overtemperature protection system is arranged on the one or both ends in metal tube (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220611123 CN202979335U (en) | 2012-11-16 | 2012-11-16 | Electric heating tube with overheat protector and two ends pressed hermetically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220611123 CN202979335U (en) | 2012-11-16 | 2012-11-16 | Electric heating tube with overheat protector and two ends pressed hermetically |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202979335U true CN202979335U (en) | 2013-06-05 |
Family
ID=48520350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220611123 Expired - Lifetime CN202979335U (en) | 2012-11-16 | 2012-11-16 | Electric heating tube with overheat protector and two ends pressed hermetically |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202979335U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938947A (en) * | 2012-11-16 | 2013-02-20 | 杭州佐帕斯工业有限公司 | Electric heating tube with overheat protector and two ends pressed hermetically |
| CN104797018A (en) * | 2015-01-27 | 2015-07-22 | 上海华族实业有限公司 | Electric heating tube provided with embedded temperature protection device |
| CN105072712A (en) * | 2015-09-08 | 2015-11-18 | 湖州思创电热科技有限公司 | Heating pipe disassembly and assembly-facilitating structure |
-
2012
- 2012-11-16 CN CN 201220611123 patent/CN202979335U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938947A (en) * | 2012-11-16 | 2013-02-20 | 杭州佐帕斯工业有限公司 | Electric heating tube with overheat protector and two ends pressed hermetically |
| CN104797018A (en) * | 2015-01-27 | 2015-07-22 | 上海华族实业有限公司 | Electric heating tube provided with embedded temperature protection device |
| CN105072712A (en) * | 2015-09-08 | 2015-11-18 | 湖州思创电热科技有限公司 | Heating pipe disassembly and assembly-facilitating structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |
|
| CX01 | Expiry of patent term |