CN2929724Y - Heat type wind speed and wind volume sensor - Google Patents
Heat type wind speed and wind volume sensor Download PDFInfo
- Publication number
- CN2929724Y CN2929724Y CN 200620092209 CN200620092209U CN2929724Y CN 2929724 Y CN2929724 Y CN 2929724Y CN 200620092209 CN200620092209 CN 200620092209 CN 200620092209 U CN200620092209 U CN 200620092209U CN 2929724 Y CN2929724 Y CN 2929724Y
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- winding
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- inner core
- ceramic
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Abstract
A thermal type wind speed and quantity sensor solves the problems of complicate manufacturing technique, high materials cost, short service life, or the like in current wind speed and quantity sensors. The utility model comprises a lead-in wire, an inner core, a winding and a ceramic protective coating, characterized in that the inner core is a ceramic hollow pipe, the two ends of the winding which is wound by platinum wires are welded on the lead-in wire, the welded places of the lead-in wire and the winding are packaged by ceramic glaze in the two ends of the inner hole of the inner core, thereby the sensors has the advantages that it not only simples manufacturing technique and reduces manufacturing cost, but also has firm and reliable connection which can not drop even when applied with external force, thereby the service life is extended. The protective coating and the inner core are made of ceramic which can lower the sintering temperature, thereby the lead-in wire is made of silver-platinum alloys which can greatly reduces the materials cost.
Description
Technical field
The utility model belongs to a kind of sensing element, particularly a kind of hot type wind speed, air flow sensor that is suitable for various measuring wind speed instruments uses.
Background technology
Wind speed, air flow sensor are vitals in wind speed, the air measuring instrument.Wind speed of the prior art, air flow sensor are made of lead-in wire, winding, inner core and protective seam etc.Wherein, lead-in wire and winding are made of platinum, and winding is a spiral-shaped thin-film, its adopts the mode of plated film to make, and is about to platinum and is plated on the inner core, carves wherein a part with specialized equipment again, it is carved into spirality, constitutes the winding of sensor, the two ends and the lead-in wire of this winding join.Described protective layer used glass is made, and forms through high temperature sintering.The subject matter that this wind speed, air flow sensor exist is: 1, complex manufacturing technology, winding adopt the mode of plated film to make, and also will carve unnecessary part with specialized equipment after plated film is finished, and the operation of processing is many, and difficulty is big.2, material cost height, because protective seam is glass, so, just need to adopt the high temperature sintering production technology, thereby lead-in wire must make also of platinum, thereby increase production cost greatly.3, serviceable life short, winding is a spiral-shaped thin-film, its two ends are the plated film thin slice, and directly are plated on the lead-in wire, thereby the junction is insecure, do the time spent being subjected to external force, come off easily.
Summary of the invention
The technical problems to be solved in the utility model is, overcome problems such as complex manufacturing technology, material cost height, serviceable life that existing wind speed, air flow sensor exist is short, provide that a kind of technology is simple, with low cost, the hot type wind speed of long service life, air flow sensor.
The utility model comprises lead-in wire, inner core, winding and ceramic protective layer; its special character is, described inner core is a ceramic hollow pipe, and winding forms with the platinum filament coiling; the two ends of winding are welded on the lead-in wire, and the weld of lead-in wire and winding is encapsulated in the endoporus two ends of inner core with ceramic glaze.
Advantage of the present utility model is, inner core adopts the ceramic hollow pipe, winding platinum filament coiling, and its weld with lead-in wire is encapsulated in the endoporus two ends of inner core with ceramic glaze, not only simplify production technology, reduced production cost, and firm and reliable connection, can not come off even be subjected to the effect of external force yet, prolong serviceable life; And protective seam and inner core adopt ceramic making, have reduced sintering temperature, thereby the making of lead-in wire employing silver-platinum alloy, thereby have reduced material cost significantly.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in drawings, the utility model comprises lead-in wire 1, inner core 3, winding 4 and ceramic protective layer 5; Described inner core 3 is ceramic hollow pipes, and winding 4 usefulness platinum filament coilings form, and simplifying production technology, platinum filament is equidistant to be wrapped on the outside surface of inner core 3, constitutes spiral winding; Described lead-in wire 1 usefulness silver-platinum alloy is made, and to reduce material cost, lead-in wire 1 has two, lays respectively at the two ends of inner core 3, and the two ends of winding 4 are welded on respectively on two lead-in wires 1; Lead-in wire 1 and the weld of winding 4 are encapsulated in the endoporus two ends of inner core 3 with ceramic glaze 2, and the lead-in wire 1 and the junction of winding 4 are fixed, and 1 are subjected to external force with winding 4 and do the time spent and disconnect to avoid going between, and guarantee that it connects reliably; Described ceramic protective layer 5 roll extrusion one deck pottery after winding 4 is wrapped on the inner core 3 forms through sintering, and winding 4 is played protection and effect of contraction.
Claims (1)
1, a kind of hot type wind speed, air flow sensor; comprise lead-in wire, inner core, winding and ceramic protective layer; it is characterized in that; described inner core is a ceramic hollow pipe; winding forms with the platinum filament coiling; the two ends of winding are welded on the lead-in wire, and the weld of lead-in wire and winding is encapsulated in the endoporus two ends of inner core with ceramic glaze.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620092209 CN2929724Y (en) | 2006-07-20 | 2006-07-20 | Heat type wind speed and wind volume sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620092209 CN2929724Y (en) | 2006-07-20 | 2006-07-20 | Heat type wind speed and wind volume sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2929724Y true CN2929724Y (en) | 2007-08-01 |
Family
ID=38308106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620092209 Ceased CN2929724Y (en) | 2006-07-20 | 2006-07-20 | Heat type wind speed and wind volume sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2929724Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769935B (en) * | 2009-01-05 | 2012-05-16 | 清华大学 | One-dimensional nanometer material based hot-wire flow velocity transducer and testing system |
| CN108279047A (en) * | 2018-04-27 | 2018-07-13 | 陕西华晨石油科技有限公司 | A kind of thermal flow rate sensor |
-
2006
- 2006-07-20 CN CN 200620092209 patent/CN2929724Y/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769935B (en) * | 2009-01-05 | 2012-05-16 | 清华大学 | One-dimensional nanometer material based hot-wire flow velocity transducer and testing system |
| CN108279047A (en) * | 2018-04-27 | 2018-07-13 | 陕西华晨石油科技有限公司 | A kind of thermal flow rate sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20090218 Decision number of declaring invalidation: 12906 |