CN102938947A - 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
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- CN102938947A CN102938947A CN2012104644282A CN201210464428A CN102938947A CN 102938947 A CN102938947 A CN 102938947A CN 2012104644282 A CN2012104644282 A CN 2012104644282A CN 201210464428 A CN201210464428 A CN 201210464428A CN 102938947 A CN102938947 A CN 102938947A
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- metal tube
- electric heating
- tube
- heating tube
- eduction rod
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Abstract
The invention 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 big while the middle thereof is a linear section with small diameter, and the linear section is used for mounting the thermal cutoff. Teflon beads are arranged at position, close to an end orifice, on one side of the end face of the plastic sleeve. A reducing portion is arranged at the position, with the Teflon beads, on the metal tube, and a pressing portion is arranged at the 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 insulativity of the electric heating tube cannot be weakened.
Description
Technical field
The present invention relates to the electric heating tube field, especially a kind of electric heating tube with 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, is delivered in the media such as water or air fast to the metal tube surface diffusion by the crystal magnesium oxide powder again, 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 present invention 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 present invention 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 the metal tube, interior eduction rod and heating wire are welded to connect, described plastic sheath is installed in the metal tube and is sleeved on outside outer eduction rod, thermal cut-off and the 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 installed in the metal tube and is sleeved on outside the outer eduction rod, is provided with magnesia powder in the metal tube inner chamber of plastic sheath end face opposite side; Metal tube in Teflon pearl position is provided with the reducing position, and the metal tube in the magnesia powder position is provided with the compacting 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 present invention 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, mechanical compaction is carried out at the compacting 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, prolong the useful life of metal tube.
Description of drawings
Fig. 1 is the structural representation of overtemperature protection system in the invention;
Fig. 2 is overall structure schematic diagram of the present invention.
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 invention will be further described 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 the 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 installed in the metal tube 6 and is sleeved on outside outer eduction rod 1, thermal cut-off 5 and the 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 faces one side is provided with Teflon pearl 2, and Teflon pearl 2 is installed in the metal tube 6 and is sleeved on outside the 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.Metal tube 6 in Teflon pearl 2 positions is provided with reducing position 10, and the metal tube 6 in magnesia powder 8 positions is provided with compacting position 11.
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 the 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.Mechanical compaction is carried out at compacting 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.Mechanical compaction to compacting position 11 has improved the heat conductivility of metal tube simultaneously, not only can remove copper sheathing, saves cost, and has improved the ability of the water-fast dirt of metal tube, prolongs the useful life of metal tube.
In addition to the implementation, the present invention 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 requirement of the present invention.
Claims (3)
1. electric heating tube with the compacting sealing of overtemperature protection system and two ends, 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 the 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 installed in the metal tube (6) and is sleeved on outer eduction rod (1), outside thermal cut-off (5) and the 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 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 installed in the metal tube (6) and is sleeved on outside the outer eduction rod (1), is provided with magnesia powder (8) in metal tube (6) inner chamber of plastic sheath (4) end face opposite side; Metal tube (6) in Teflon pearl (2) position is provided with reducing position (10), and the metal tube (6) in magnesia powder (8) position is provided with compacting position (11).
2. 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 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 the metal tube (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104644282A CN102938947A (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 |
|---|---|---|---|
| CN2012104644282A CN102938947A (en) | 2012-11-16 | 2012-11-16 | Electric heating tube with overheat protector and two ends pressed hermetically |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102938947A true CN102938947A (en) | 2013-02-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104644282A Pending CN102938947A (en) | 2012-11-16 | 2012-11-16 | Electric heating tube with overheat protector and two ends pressed hermetically |
Country Status (1)
| Country | Link |
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| CN (1) | CN102938947A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104093227A (en) * | 2014-07-07 | 2014-10-08 | 杭州河合电器股份有限公司 | Novel electric heating tube with thermal fuses |
| CN105792391A (en) * | 2016-03-04 | 2016-07-20 | 青岛易特优电子有限公司 | Special-tube-shaped electric heating apparatus and preparation method therefore |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08148265A (en) * | 1994-11-17 | 1996-06-07 | Matsushita Electric Ind Co Ltd | Sheathed heater |
| CN201315677Y (en) * | 2008-11-11 | 2009-09-23 | 美的集团有限公司 | Heating tube |
| CN201374826Y (en) * | 2008-04-29 | 2009-12-30 | 唐亚兵 | Electric heating tube device internally provided with thermal protection switch component |
| CN202979335U (en) * | 2012-11-16 | 2013-06-05 | 杭州佐帕斯工业有限公司 | Electric heating tube with overheat protector and two ends pressed hermetically |
-
2012
- 2012-11-16 CN CN2012104644282A patent/CN102938947A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08148265A (en) * | 1994-11-17 | 1996-06-07 | Matsushita Electric Ind Co Ltd | Sheathed heater |
| CN201374826Y (en) * | 2008-04-29 | 2009-12-30 | 唐亚兵 | Electric heating tube device internally provided with thermal protection switch component |
| CN201315677Y (en) * | 2008-11-11 | 2009-09-23 | 美的集团有限公司 | Heating tube |
| CN202979335U (en) * | 2012-11-16 | 2013-06-05 | 杭州佐帕斯工业有限公司 | Electric heating tube with overheat protector and two ends pressed hermetically |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104093227A (en) * | 2014-07-07 | 2014-10-08 | 杭州河合电器股份有限公司 | Novel electric heating tube with thermal fuses |
| CN105792391A (en) * | 2016-03-04 | 2016-07-20 | 青岛易特优电子有限公司 | Special-tube-shaped electric heating apparatus and preparation method therefore |
| CN105792391B (en) * | 2016-03-04 | 2019-03-29 | 青岛易特优电子有限公司 | A kind of electric heater unit and preparation method of abnormal shape tubular structure |
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Application publication date: 20130220 |