CN209310861U - A kind of externally-wound type ceramic platinum resistance applied to thermal flow rate sensor - Google Patents
A kind of externally-wound type ceramic platinum resistance applied to thermal flow rate sensor Download PDFInfo
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- CN209310861U CN209310861U CN201920146887.3U CN201920146887U CN209310861U CN 209310861 U CN209310861 U CN 209310861U CN 201920146887 U CN201920146887 U CN 201920146887U CN 209310861 U CN209310861 U CN 209310861U
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 229910052697 platinum Inorganic materials 0.000 title claims abstract description 65
- 239000000919 ceramic Substances 0.000 title claims abstract description 51
- 239000000945 filler Substances 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 7
- 210000003298 dental enamel Anatomy 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 3
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 description 5
- 238000005245 sintering Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005524 ceramic coating Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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Abstract
The utility model discloses a kind of externally-wound type ceramic platinum resistances applied to thermal flow rate sensor for belonging to platinum resistance technical field, including ceramic skeleton, the inside of ceramic skeleton is opened up there are two through-hole, and platinum filament is wound on the circumference of ceramic skeleton, one end inside through-hole is connected with pad, lead is connected on pad, and pad is also connect with platinum filament, ceramic skeleton is equipped with resistance value far from one end of lead and adjusts head, resistance value adjusts head and connect with platinum filament, and ceramic skeleton, lead, platinum filament and resistance value adjust head and encapsulated by encapsulating structure；The utility model uses platinum filament and novel ceramic enamel is made, with common externally-wound type resistance in the case where same size volume size, the common externally-wound type resistance of the resistance ratio has higher anti-overload ability, has the ability for a long time by high current, when applied to flow sensor, measurement accuracy, response time, sensitivity and the high reliability of flow sensor are improved.
Description
Technical field
The utility model belongs to platinum resistance technical field, and in particular to a kind of externally-wound type applied to thermal flow rate sensor
Ceramic platinum resistance.
Background technique
Externally-wound type ceramic platinum resistance has that antidetonation, performance are stable, the service life is long, anti-overload ability is strong, self-heating is small, response speed
Fastly, the advantages that meeting measuring requirement has carried out comprehensive design.However, the externally-wound type ceramic platinum resistance of the prior art is in use process
In there are some disadvantages, for example, 1, conventional externally-wound type platinum resistance anti-overload ability and the electric current passed through generally only have 200-
400mA, and it is unable to long term overloading and operation；2, the resistance accuracy of conventional externally-wound type platinum resistance is low；3, conventional externally-wound type platinum electricity
Resistance is generally used glass glaze encapsulation, and sintering temperature generally only has 350 DEG C or so, therefore cannot be used for 600-800 DEG C of thermometric.
Utility model content
To solve the problems mentioned above in the background art.The utility model provides a kind of applied to heat type flow quantity sensing
The externally-wound type ceramic platinum resistance of device has measurement accuracy, response time, sensitivity and the high reliability for improving flow sensor
The characteristics of.
To achieve the above object, the utility model provides the following technical solutions: a kind of applied to thermal flow rate sensor
Externally-wound type ceramic platinum resistance, including ceramic skeleton, the inside of ceramic skeleton are opened up there are two through-hole, and on the circumference of ceramic skeleton
It is wound with platinum filament, one end inside through-hole is connected with pad, lead is connected on pad, and pad is also connect with platinum filament,
Ceramic skeleton is equipped with resistance value far from one end of lead and adjusts head, and resistance value adjusts head and connect with platinum filament, ceramic skeleton, lead, platinum filament
And resistance value adjusts head and is encapsulated by encapsulating structure.
As the optimal technical scheme of the utility model, the platinum filament is the platinum filament of diameter 0.02-0.05mm.
As the optimal technical scheme of the utility model, the encapsulating structure is ceramic glaze component.
As the optimal technical scheme of the utility model, the lead is platinum lead.
As the optimal technical scheme of the utility model, filler is filled in two through-holes.
Compared with prior art, the utility model has the beneficial effects that
1, the utility model uses platinum filament and novel ceramic enamel is made, and common externally-wound type resistance is in same size volume
In the case where size, the common externally-wound type resistance of the resistance ratio has higher anti-overload ability, has and passes through high current for a long time
Ability, when being applied to flow sensor, improve the measurement accuracy of flow sensor, response time, sensitivity and highly reliable
Property；
2, the utility model uses higher tone pitch precision, which has the essence of ± 0.03 Ω
Degree, the complexity of circuit debugging when higher resistance value consistency greatlies simplify flow sensor production, even without debugging；
3, the utility model resistance skeleton and coating all use novel ceramic enamel to encapsulate, the common use glass of the resistance ratio
There is the externally-wound type resistance of glaze encapsulation higher operating temperature and wider workplace, maximum temperature can reach+800 DEG C.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the utility model；
In figure: 1, ceramic skeleton；2, lead；3, pad；4, platinum filament；5, through-hole；6, encapsulating structure；7, resistance value is adjusted
Head.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1
Referring to Fig. 1, the utility model is the following technical schemes are provided: a kind of externally-wound type applied to thermal flow rate sensor
Ceramic platinum resistance, including ceramic skeleton 1, the inside of ceramic skeleton 1 are opened up there are two through-hole 5, and on the circumference of ceramic skeleton 1 around
Have platinum filament 4, one end inside through-hole 5 is welded with pad 3, be welded with lead 2 on pad 3, and pad 3 also with platinum filament 4
It is connected by conducting wire, ceramic skeleton 1 is equipped with resistance value adjusting head 7 far from one end of lead 2 and (is adjusted by increasing and decreasing the length of platinum filament
Resistance value size accuracy), resistance value adjusts head 7 and is connect with platinum filament 4 by conducting wire, ceramic skeleton 1, lead 2, platinum filament 4 and resistance value tune
Section header 7 is encapsulated by encapsulating structure 6.
In the present embodiment, for above-mentioned platinum filament 4, platinum filament 4 is the platinum filament of diameter 0.02-0.05mm, the present embodiment
The diameter of middle platinum filament 4 is 0.05mm, and the sintering temperature using program element is higher (850 DEG C or more), the coefficient of expansion of platinum filament 4
Greater than the coefficient of expansion of ceramics, in sintering temperature, the expansion of platinum filament 4 obtains maximum volume, with the reduction ceramic solidification of temperature
Shell is formed in platinum filament periphery, platinum filament 4 is unstressed in coating shell, and platinum filament 4 is constrained in ceramic coating therefore is not afraid of vibration,
Long-time stability are good.
In the present embodiment, for above-mentioned encapsulating structure 6, encapsulating structure 6 is ceramic glaze component；It is made pottery using the program
Enamel seal coat is thin, and almost without self-heating when being used for thermometric, the response time is fast, and heat conduction efficiency is high when being used to heat, and has
The surge impact of prolonged anti-overload ability and high current, service life are high.
In the present embodiment, for above-mentioned lead 2, lead 2 is platinum lead.
Embodiment 2
Referring to Fig. 1, this embodiment differs from embodiment 1 in that: in the present embodiment, for above-mentioned two through-hole
For 5, filler (AL is filled in two through-holes 52O3)；Increase the anti-seismic performance of ceramic skeleton using the program.
In conclusion using platinum lead, platinum filament 4 in structure by means of the above-mentioned technical proposal of the utility model
It is wound on diplopore ceramic skeleton outer surface, is adjusted after head 7 adjusts resistance value by resistance value and the ceramic glaze of novel process material is used to cover envelope
Dress is sintered；The novel ceramic porcelain glaze coating of encapsulation is thin, so that the thermal response time of the resistance is fast, insulation resistance meets industry again
Vertification regulation requirement；For platinum filament in the outer surface of diplopore ceramic skeleton, platinum filament diameter is thick, and novel ceramic enamel seal coat is thin, so
Almost without self-heating when for thermometric, thermal response time is fast, and heat conduction efficiency is high when being used to heat, and has prolonged overload-resistant
The surge impact of ability and high current, service life are high；The sintering temperature of element is higher (850 DEG C or more), the expansion system of platinum filament
Number is greater than the coefficient of expansion of ceramics, and in sintering temperature, platinum filament expansion obtains maximum volume, as the reduction ceramics of temperature are solid
To change and forms shell in platinum filament periphery, platinum filament is unstressed in coating shell, and platinum filament is constrained in ceramic coating therefore is not afraid of vibration,
Long-time stability are good；Platinum filament is used to that temperature change signal to be quickly converted into electric signal when thermometric, being passed through when for heating
Electric current fast heating is converted into heat.
Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic
It is equivalently replaced.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (5)
1. a kind of externally-wound type ceramic platinum resistance applied to thermal flow rate sensor, including ceramic skeleton (1), it is characterised in that:
The inside of ceramic skeleton (1) is opened up there are two through-hole (5), and platinum filament (4) are wound on the circumference of ceramic skeleton (1), in through-hole (5)
The one end in portion is connected with pad (3), is connected on pad (3) lead (2), and pad (3) is also connect with platinum filament (4),
Ceramic skeleton (1) is equipped with resistance value far from the one end of lead (2) and adjusts head (7), and resistance value adjusts head (7) and connect with platinum filament (4), ceramics
Skeleton (1), lead (2), platinum filament (4) and resistance value adjust head (7) and are encapsulated by encapsulating structure (6).
2. a kind of externally-wound type ceramic platinum resistance applied to thermal flow rate sensor according to claim 1, feature exist
In: the platinum filament (4) is the platinum filament of diameter 0.02-0.05mm.
3. a kind of externally-wound type ceramic platinum resistance applied to thermal flow rate sensor according to claim 1, feature exist
In: the encapsulating structure (6) is ceramic glaze component.
4. a kind of externally-wound type ceramic platinum resistance applied to thermal flow rate sensor according to claim 1, feature exist
In: the lead (2) is platinum lead.
5. a kind of externally-wound type ceramic platinum resistance applied to thermal flow rate sensor according to claim 1, feature exist
In: filler is filled in two through-holes (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920146887.3U CN209310861U (en) | 2019-01-28 | 2019-01-28 | A kind of externally-wound type ceramic platinum resistance applied to thermal flow rate sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920146887.3U CN209310861U (en) | 2019-01-28 | 2019-01-28 | A kind of externally-wound type ceramic platinum resistance applied to thermal flow rate sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209310861U true CN209310861U (en) | 2019-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920146887.3U Active CN209310861U (en) | 2019-01-28 | 2019-01-28 | A kind of externally-wound type ceramic platinum resistance applied to thermal flow rate sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209310861U (en) |
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2019
- 2019-01-28 CN CN201920146887.3U patent/CN209310861U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A externally wound ceramic platinum resistor applied to thermal flow sensors Granted publication date: 20190827 Pledgee: ZHEJIANG DONGYANG RURAL COMMERCIAL BANK Co.,Ltd. Pledgor: SANXING THERMOMETER Co.,Ltd. Registration number: Y2024330000171 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |