CN2126949Y - Zirconium oxide heating element - Google Patents
Zirconium oxide heating element Download PDFInfo
- Publication number
- CN2126949Y CN2126949Y CN 92203760 CN92203760U CN2126949Y CN 2126949 Y CN2126949 Y CN 2126949Y CN 92203760 CN92203760 CN 92203760 CN 92203760 U CN92203760 U CN 92203760U CN 2126949 Y CN2126949 Y CN 2126949Y
- Authority
- CN
- China
- Prior art keywords
- cold
- heater
- lead
- heating element
- wire body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Resistance Heating (AREA)
Abstract
The utility model relates to the structure of a heating element, is characterized in that the heating element is composed of the hot end of a heating body, the ' cold ' end of the heating body and a wire leading body. The hot end and the 'cold' of the heating body adopt zirconium oxide materials, and the wire leading body adopts strontium chromate lanthanum. The wire leading body is connected with the 'cold' end of the heating body adopting screw threads, and in addition, scarfed connecting, step type connecting and tightly fitting connecting can be adopted. Slurry such as ZrO-[2] quality, LaCrO-[3] quality, etc. Are filled into connecting points. So, connection is firm; contacting area is increased; the heating element has favorable electrical conductivity.
Description
The utility model belongs to heater element.Mainly be applicable to high-temperature heater etc. under the oxidizing atmosphere.
Along with the development of material science, day by day many specific harsh requirements are proposed also technology, under specific oxidizing atmosphere, carry out high temperature (1800 ℃) heat treatment as some material, to obtain property; To the material or the device of some no specific (special) requirements, both safe and reliable as carry out sintering or heat treatment in air, cost also reduces with the simplification of technology, thereby shows the glamour of the high temperature heat source that uses under the oxidizing atmosphere more.
Zirconia matter heater is under the oxidizing atmosphere, and serviceability temperature is up to the heater more than 2000 ℃, and it is the highest heater of serviceability temperature under oxidizing atmosphere at present.Zirconia belongs to conductor oxidate, and normal temperature resistance is big, and (resistivity is up to 10
8Ohmcm).Thereby when being used as heater element, need be furnished with the good electricity-leading end of conduction under the normal temperature in its end---the lead-in wire body.
At present, prior art is still more adopt conducts electricity, the noble metal platinum rhodium of fusing point height, high-temperature oxidation resistant does the lead-in wire body, as day the disclosure specially permit flat 2-210785.Though this platinum rhodium lead-in wire body excellent performance, major defect is that cost is high.The syndeton of this lead-in wire body and heater element is that the lead-in wire body is wrapped on " cold " end of heater.
The purpose of this utility model is to provide a kind of new heater element, and its lead-in wire body is more firm with being connected of heater.
Specific embodiments of the present utility model is as follows:
Zirconia heater hot junction has with the connected mode of " cold " end: (1) tight fit is connected; (2) inclined-plane connects; (3) step connects.The lead-in wire body is connected with " cold " end of heater, and the body that goes between subsequently joins by lead and power supply again.
Lead-in wire body of the present utility model adopts with heater " cold " end and is threaded.One end of heater " cold " end has external screw thread, and lead-in wire body and heater " cold " hold the end that joins to have internal thread, and both match by internal and external threads, link together.The lead-in wire body also can adopt the inclined-plane to be connected with heater " cold " end.In above-mentioned two kinds of syndetons, between is inserted resistant to elevated temperatures ZrO
2Matter or LaCrO
3Slurries such as matter.
Because employing is threaded or the inclined-plane is connected between the utility model heater " cold " end and the lead-in wire body, and inserts resistant to elevated temperatures slurry between the two.Therefore, not only be connected firmly, and both contact-making surfaces are big, contact resistance is little, makes heater element have good electrical conductivity, and cost is also low.And because resistant to elevated temperatures slurry has been inserted in the junction.Thereby buffering is owing to the inconsistent thermal stress that produces of the two coefficient of expansion.In addition, with the heater element of the assembling that is threaded, outward appearance is neat, consistent size.
Description of drawings
Accompanying drawing 1 is a heater element syndeton schematic diagram.
Accompanying drawing 2,3 is the syndeton schematic diagram in heater " cold " end and hot junction.
1 is the heater hot junction among the figure, and 2 is the heater cold junction, and 3 are the lead-in wire body.Heater hot junction 1, " cold " end 2 is made by same zirconia material.One end of " cold " end 2 is equipped mutually with hot junction 1, and the other end has external screw thread.Have internal thread with " cold " end 2 lead-in wire end of bodies that join, both are by being threaded; Insert by ZrO in the joint
2Matter or LaCrO
3The slurry that matter is formed." cold " end 2 and hot junction 1 also can be adopted the inclined-plane to connect (Fig. 2) and be connected (Fig. 3) with step except that the employing tight fit is joined.
Lead-in wire body 3 holds 2 except that adopting above-mentioned being threaded with heater " cold ", also can adopt the inclined-plane to connect; High temperature resistant slurry is all inserted in the junction.
Claims (2)
1, a kind of heating-supplied heater element, form by heater hot junction 1 " cold " end 2 and lead-in wire body 3, an end that it is characterized in that heater " cold " end 2 has external screw thread, lead-in wire body 3 has internal thread with the end that heater " cold " end joins, and heater " cold " end 2 adopts helicitic texture to connect with being connected of lead-in wire body 3; Also can adopt the inclined-plane to connect.
2, heater element according to claim 1 is characterized in that all inserting ZrO in the lead-in wire body 3 and the junction of heater " cold " end
2Or LaCrO
3Slurries such as matter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92203760 CN2126949Y (en) | 1992-03-07 | 1992-03-07 | Zirconium oxide heating element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92203760 CN2126949Y (en) | 1992-03-07 | 1992-03-07 | Zirconium oxide heating element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2126949Y true CN2126949Y (en) | 1993-02-10 |
Family
ID=33761475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92203760 Expired - Fee Related CN2126949Y (en) | 1992-03-07 | 1992-03-07 | Zirconium oxide heating element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2126949Y (en) |
-
1992
- 1992-03-07 CN CN 92203760 patent/CN2126949Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |