CN103974468A - Method for maintaining good electric conductivity of heating wire terminal - Google Patents
Method for maintaining good electric conductivity of heating wire terminal Download PDFInfo
- Publication number
- CN103974468A CN103974468A CN201410196414.6A CN201410196414A CN103974468A CN 103974468 A CN103974468 A CN 103974468A CN 201410196414 A CN201410196414 A CN 201410196414A CN 103974468 A CN103974468 A CN 103974468A
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- China
- Prior art keywords
- heating wire
- metal tube
- electric conductivity
- good
- nested
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 52
- 239000002184 metal Substances 0.000 claims abstract description 52
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 7
- 239000004411 aluminium Substances 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000000280 densification Methods 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 230000015556 catabolic process Effects 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 238000005485 electric heating Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Resistance Heating (AREA)
Abstract
Provided is a method for maintaining good electric conductivity of a heating wire terminal. The end of a heating wire is inserted into a metal tube with good heat conductivity and good electric conductivity, the end of the heating wire and the metal tube are nested, then the metal tube is squeezed through a tool to make tight contact with the heating wire in the metal tube, in this way, the end part of the heating wire is short circuited by the metal tube and does not emit heat, and a certain amount of heat transmitted from the heating part of the heating wire is also absorbed by the metal tube. Due to the fact that the metal tube is good in heat conducting property, large in surface area and high in radiating speed, the nested part of the end of the heating wire and the metal tube is not high in temperature and is not oxidized, good electric conductivity can be maintained, and a power source wire electrically connected with the heating wire is also basically close to the room temperature. Due to the fact that the temperature is not high and oxidization does not occur, good electric conductivity is ensured, the contact resistance at the connecting portion of the end of the heating wire and the power source wire can be ignored, and the damage and the potential hazards of fire disasters caused by heat at the contact resistance position are eliminated. The method for maintaining the good electric conductivity of the heating wire terminal has the advantages that the service life of the heating wire is greatly prolonged, and the reliability and the safety of electric heating products are improved.
Description
Technical field
The present invention relates to a kind of method that makes heating wire terminals keep satisfactory electrical conductivity, use the method, can make heating wire significantly reduce with the power lead place of electrical connection temperature, the hidden danger that the loose contact of avoiding contact resistance that high-temperature oxydation causes to increase causing and heating cause fire.
Background technology
The electric heating products life-span of use heating wire is long at present, reliability is low, sometimes also there will be the situation that causes that wire is on fire, poor stability, the overwhelming majority is that oxidation causes contact resistance to increase because heating wire termination and power lead electrically contact part heating, because heating wire everywhere electric current is consistent, according to formula Q=I
2rT, known contact resistance place can send more heat, is oxidized more severely, and resistance is larger, vicious circle, until damage, or heat causes that the organic substances such as plastics at contact resistance place smolder even on firely, being therefore badly in need of new method new technology changes this situation.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of simple reliable and stable method that makes heating wire terminals keep satisfactory electrical conductivity again, to extend heating wire useful life, improve the reliability and security of electric heating products.
The technical solution adopted in the present invention is: the heating wire two ends respectively metal tube good with electric conductivity with two sections of heat conduction is nested, metal tube is the short circuit of heating wire two ends, when energising is used like this, two ends is not generated heat, some heats that transmit from electrothermal wire heating position are also absorbed by metal tube, because metal tube surface is long-pending large, radiating rate is very fast, heating wire termination and metal tube nesting part megadyne temperature degree are not high like this, be not oxidized, so just can keep good conductivity, the power lead being electrically connected to it approaches normal temperature substantially, because temperature is too high, be not oxidized yet, guaranteed good conductivity.
More particularly, method of the present invention, comprises following steps:
1) heating wire that customization lengthens, it is characterized in that: the length that heating wire lengthens equals the total length of the metal tube nested parts that heating wire two ends and heat conduction and electric conductivity are good, because the heating wire of nested parts is by metal tube short circuit, the resistance decreasing so electrothermal wire heating partly shortens, according to formula P=U
2/ R is known, and power can become greatly, is greater than rated power, thus to lengthen heating wire, to guarantee that rated power is constant;
2) with reference to heating wire diameter dimension, manufacture or choose the good metal tube of heat conduction and electric conductivity, it is characterized in that: metal tube internal diameter and heating wire diameter dimension are very approaching, heating wire can insert in metal tube inner diameter hole, and both cooperations are more closely better.
3) heating wire termination is inserted in heat conduction and the good metal tube of electric conductivity, make both nested, nested length is generally several centimetres, and concrete length can be done experiment and determines, guarantees that when energising is heated nested termination is electrically connected to place's temperature with power lead not too high.
4) with instrument extruding heat conduction metal tube with the heating wire nested position good with electric conductivity, make heating wire and metal tube close contact, guarantee to conduct heat between the two good with electric conductivity.
The good metal tube of above-mentioned heat conduction and electric conductivity is seamless pipe or seamed pipe, the form such as pipe, square tube, its two ends are the same straight tubes, also can one end be threaded or the structure of tightening is convenient to be connected with power lead in hole etc., its material is aluminium, copper, silver, gold etc., be preferably aluminium, because aluminium is cheap, heat-conductivity conducting performance is all good, also because oxidation generates one deck pellumina of densification as thin as a wafer under the normal temperature of aluminium surface, can stop and continue oxidation, this layer as thin as a wafer pellumina of densification is easy to electrical breakdown, and its contact resistance is negligible.
The invention has the beneficial effects as follows: eliminated because damaging with the heating that contact resistance heating in the power line place of electrical connection causes heating wire termination, also eliminated the hidden danger that causes fire, greatly extend the useful life of heating wire, improved the reliability and security of electric heating products.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
Fig. 1 is heating wire schematic diagram.
Fig. 2 be the good metal tube schematic diagram of the heat conduction of several forms and electric conductivity (form such as pipe, square tube, the straight tube that two ends are the same, also can TOE or hole etc. be convenient to be connected with power lead the structure of tightening).
Fig. 3 is two sections of metal tubes and the nested schematic diagram that coordinates of heating wire two ends that heat conduction is good with electric conductivity.
In figure: 1. heating wire termination, 2. electrothermal wire heating district, the 3. good metal tube of heat conduction and electric conductivity, 4. the heat conduction metal tube and heating wire termination nested mating part good with electric conductivity.
Embodiment
Implementation process mainly contains following step:
1) heating wire that customization lengthens, the length that heating wire lengthens equals the nested total length of metal tube 3 that heating wire two ends 1 is good with electric conductivity with heat conduction, because after heating wire termination 1 is nested with metal tube 3, by nested part heating wire 1 of living by metal tube 3 short circuits, the resistance decreasing so electrothermal wire heating partly shortens, according to formula P=U
2/ R is known, and power can become greatly, is greater than rated power, thus to lengthen heating wire, to guarantee that rated power is constant;
2) with reference to the diameter dimension of heating wire termination 1, manufacture or choose the good metal tube 3 of heat conduction and electric conductivity, make the internal diameter of the good metal tube of heat conduction and electric conductivity 3 and the diameter dimension of heating wire termination 1 very approaching, heating wire termination 1 can be inserted in the inner diameter hole of heat conduction and the good metal tube 3 of electric conductivity, and both cooperations are more closely better.
3) heating wire termination 1 is inserted in the inner diameter hole of heat conduction and the good metal tube 3 of electric conductivity, make both nested cooperations, the length of nested mating part 4 is generally several centimetres, concrete length can be done experiment and determines, guarantees that when energising heating nested termination is electrically connected to place's temperature with power lead not too high.
4) with instrument extruding heat conduction metal tube with the heating wire nested position 4 good with electric conductivity, make the good metal tube of heating wire termination 1 and heat conduction and electric conductivity 3 close contacts, guarantee to conduct heat between the two good with conduction.
Claims (3)
1. make heating wire terminals keep the method for satisfactory electrical conductivity, it is characterized in that: the heating wire two ends respectively metal tube good with electric conductivity with two sections of heat conduction is nested, metal tube is the short circuit of heating wire two ends, when energising is used like this, the heating wire of two ends does not generate heat, some heats that partly transmit from electrothermal wire heating are also absorbed by metal tube, because metal tube surface is long-pending large, radiating rate is very fast, heating wire termination and metal tube nested parts temperature are not high like this, and implementation method comprises following steps:
1) heating wire that customization lengthens, it is characterized in that: the length that heating wire lengthens equals the total length of the metal tube nested parts that heating wire two ends and heat conduction and electric conductivity are good, because the heating wire of nested parts is by metal tube short circuit, the resistance decreasing so electrothermal wire heating partly shortens, according to formula P=U
2/ R is known, and power can become greatly, is greater than rated power, thus to lengthen heating wire, to guarantee that rated power is constant;
2) with reference to heating wire diameter dimension, manufacture or choose the good metal tube of heat conduction and electric conductivity, it is characterized in that: metal tube internal diameter and heating wire diameter dimension are very approaching, heating wire can insert in metal tube inner diameter hole, and both cooperations are more closely better.
3) heat conduction and electric conductivity are inserted to all in good metal tube in heating wire termination, make both nested, nested length is generally several centimetres, and concrete length can be done experiment and determines, guarantees that when energising heating nested termination is electrically connected to place's temperature with power lead not too high.
4) with instrument extruding heat conduction metal tube with the heating wire nested position good with electric conductivity, make heating wire and metal tube close contact, guarantee to conduct heat between the two good with electric conductivity.
2. according to claim, with the heating wire terminals that make described in 1, keep the method for satisfactory electrical conductivity, it is characterized in that: the good metal tube of heat conduction and electric conductivity is seamless pipe or seamed pipe, metal tube is the forms such as pipe, square tube, its two ends are the same straight tubes, also can one end be threaded or the structure of tightening is convenient to be connected with power lead in hole etc., and material is the metal of the heat-conductivity conducting function admirables such as aluminium, copper, silver, gold.
3. the method that makes heating wire terminals keep satisfactory electrical conductivity according to claim 2, it is characterized in that: the metal tube that heat conduction and electric conductivity are good, material is preferably aluminium, because aluminium is cheap, heat-conductivity conducting performance is all good, goes back because oxidation generates one deck pellumina of densification as thin as a wafer under the normal temperature of aluminium surface, can stop and continue oxidation, this layer as thin as a wafer pellumina of densification is easy to electrical breakdown, and its contact resistance can be ignored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410196414.6A CN103974468A (en) | 2014-05-11 | 2014-05-11 | Method for maintaining good electric conductivity of heating wire terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410196414.6A CN103974468A (en) | 2014-05-11 | 2014-05-11 | Method for maintaining good electric conductivity of heating wire terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103974468A true CN103974468A (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410196414.6A Pending CN103974468A (en) | 2014-05-11 | 2014-05-11 | Method for maintaining good electric conductivity of heating wire terminal |
Country Status (1)
| Country | Link |
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| CN (1) | CN103974468A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016065520A1 (en) * | 2014-10-27 | 2016-05-06 | 惠州市吉瑞科技有限公司 | Electric heating wire assembly, electronic cigarette, and method for manufacturing electric heating wire assembly thereof |
| CN110840280A (en) * | 2019-11-06 | 2020-02-28 | 沈阳金唯特厨具有限公司 | A novel heater strip for eating material processing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7372007B1 (en) * | 2005-02-17 | 2008-05-13 | Gaumer Company, Inc. | Medium voltage heater element |
| CN101534583A (en) * | 2009-03-05 | 2009-09-16 | 安徽鑫国仪表有限公司 | Armored heater |
| CN202167268U (en) * | 2011-07-29 | 2012-03-14 | 冼远程 | Wire protection sleeve structure of electrical heating coil |
-
2014
- 2014-05-11 CN CN201410196414.6A patent/CN103974468A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7372007B1 (en) * | 2005-02-17 | 2008-05-13 | Gaumer Company, Inc. | Medium voltage heater element |
| CN101534583A (en) * | 2009-03-05 | 2009-09-16 | 安徽鑫国仪表有限公司 | Armored heater |
| CN202167268U (en) * | 2011-07-29 | 2012-03-14 | 冼远程 | Wire protection sleeve structure of electrical heating coil |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016065520A1 (en) * | 2014-10-27 | 2016-05-06 | 惠州市吉瑞科技有限公司 | Electric heating wire assembly, electronic cigarette, and method for manufacturing electric heating wire assembly thereof |
| CN110840280A (en) * | 2019-11-06 | 2020-02-28 | 沈阳金唯特厨具有限公司 | A novel heater strip for eating material processing |
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Application publication date: 20140806 |