CN103411644B - A kind of probe of thermal type flow sensor - Google Patents
A kind of probe of thermal type flow sensor Download PDFInfo
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- CN103411644B CN103411644B CN201310350838.9A CN201310350838A CN103411644B CN 103411644 B CN103411644 B CN 103411644B CN 201310350838 A CN201310350838 A CN 201310350838A CN 103411644 B CN103411644 B CN 103411644B
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- type flow
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Abstract
The invention discloses a kind of probe of thermal type flow sensor, comprise detection part and main structural component, one end of described detection part is arranged in described main structural component.The beneficial effect of employing the technical program is: be not confined to tiny flow quantity scope, can measure comparatively large discharge, and signal stabilization is not subject to the impact of vibrations; Effectively make probe signal increase, reaction velocity accelerates, and can measure the flow of high precision, wide region simultaneously.
Description
Technical field
The present invention relates to a kind of probe, be specifically related to a kind of probe of thermal type flow sensor.
Background technology
In prior art, the probe of flow sensor skill carries signal to sensor, and the signal of probe exports the sensing range, stability and the precision that directly determine whole flow sensor.Traditional flow sensor probe is the circuit with thermistor and heating resistor composition, does not structurally take measure effectively to solve the problem of heat conduction.Mainly there is following defect in traditional probe of thermal type flow sensor: the liquid can only measuring tiny flow quantity, and the signal exported is little, and consistance is poor.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of probe of thermal type flow sensor, not being confined to tiny flow quantity scope, comparatively large discharge can be measured, and signal stabilization is not subject to the impact of vibrations; Effectively make probe signal increase, reaction velocity accelerates, and can measure the flow of high precision, wide region simultaneously.
For achieving the above object, technical scheme of the present invention is as follows: a kind of probe of thermal type flow sensor, comprise detection part and main structural component, one end of described detection part is arranged in described main structural component, described detection part comprises flexible PCB, platinum resistance and heating resistor, described platinum resistance and heating resistor are separately positioned on the top layer of described flexible PCB, and described platinum resistance is arranged on the end near described flexible PCB;
Described main structural component comprises probe body, air chamber part, spring, Teflon top cover, attaching nut, jump ring and O-ring seal, described air chamber part is arranged on the inside of described probe body, described air chamber part is provided with groove, described spring one end is arranged in described groove, described Teflon top cover is set in the described spring other end, described attaching nut is arranged on the outside of described probe body, described jump ring is fixedly connected on described attaching nut one end, the other end of described probe body is also provided with seal groove, and described O-ring seal is arranged in described seal groove.
Preferably, described detection part also comprises the copper foil layer for strengthening signal, and described copper foil layer is arranged on the bottom of described flexible PCB.
Preferably, described platinum resistance is provided with two.
Preferably, the thickness of described copper foil layer is 12 μm.
Preferably, the wall thickness of described probe body is 0.3 ㎜.
The beneficial effect of employing the technical program is: be not confined to tiny flow quantity scope, can measure comparatively large discharge, and signal stabilization is not subject to the impact of vibrations; Effectively make probe signal increase, reaction velocity accelerates, and can measure the flow of high precision, wide region simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in embodiment of the present invention technology, be briefly described to the accompanying drawing used required in the description of embodiment technology below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is stereographic map of the present invention.
Fig. 2 is exploded perspective view of the present invention.
Fig. 3 is detection part diagrammatic cross-section of the present invention.
Numeral and the corresponding component title represented by letter in figure:
1. flexible PCB 2. platinum resistance 3. heating resistor 4. probe body 5. air chamber part 6. spring 7. Teflon top cover 8. attaching nut 9. jump ring 10. O-ring seal 11. groove 12. seal groove 13. copper foil layer.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, Figure 2 and Figure 3, a kind of probe of thermal type flow sensor, comprise detection part and main structural component, one end of detection part is arranged in main structural component, detection part comprises flexible PCB 1, platinum resistance 2 and heating resistor 3, platinum resistance 2 and heating resistor 3 are separately positioned on the top layer of flexible PCB 1, and platinum resistance 2 is arranged on the end near flexible PCB 1;
Main structural component comprises probe body 4, air chamber part 5, spring 6, Teflon top cover 7, attaching nut 8, jump ring 9 and O-ring seal 10, air chamber part 5 is arranged on the inside of probe body 4, air chamber part 5 is provided with groove 11, spring 6 one end is arranged in groove 11, Teflon top cover 7 is set in spring 6 other end, attaching nut 8 is arranged on the outside of probe body 4, jump ring 9 is fixedly connected on attaching nut 8 one end, the other end of probe body 4 is also provided with seal groove 12, and O-ring seal 10 is arranged in seal groove 12.
Detection part also comprises the copper foil layer for strengthening signal, and copper foil layer 13 is arranged on the bottom of described flexible PCB.The thickness of copper foil layer is 12 μm.Flexible PCB 1 is double layer design, by increasing the copper foil layer 13 of 12 μm at bottom, can strengthen signal and thermal conductivity.
Platinum resistance 2 is provided with two.The wall thickness of probe body 4 is 0.3mm, and probe body 4 consistance is good.Attaching nut 8 is fixed in probe body 4 by spring 6, and and O-ring seal 10 coordinate probe body 4 be arranged in seal groove 12, spring 6 withstands the position of platinum resistance 2 in flexible PCB 1, and flexible PCB 1 entirety is fixed on the inside of probe body 4.The effect of air chamber part 5 is to utilize its thermal-insulation function, reduces heat conduction, has heat insulation effect, and makes the copper foil layer 13 at flexible PCB 1 back side be close to the limit wall of probe body 4 by the cooperation of spring 6 and Teflon top cover 7, can strengthen signal.
The beneficial effect of employing the technical program is: be not confined to tiny flow quantity scope, can measure comparatively large discharge, and signal stabilization is not subject to the impact of vibrations; Effectively make probe signal increase, reaction velocity accelerates, and can measure the flow of high precision, wide region simultaneously.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (5)
1. a probe of thermal type flow sensor, it is characterized in that, comprise detection part and main structural component, described detection part comprises flexible PCB, platinum resistance and heating resistor, described platinum resistance and heating resistor are separately positioned on the top layer of described flexible PCB, and described platinum resistance is arranged on the end near described flexible PCB;
Described main structural component comprises probe body, air chamber part, spring, Teflon top cover, attaching nut, jump ring and O-ring seal, described air chamber part is arranged on the inside of described probe body, described air chamber part is provided with groove, described spring one end is arranged in described groove, described Teflon top cover is set in the described spring other end, described attaching nut is arranged on the outside of described probe body, described jump ring is fixedly connected on described attaching nut one end, the other end of described probe body is also provided with seal groove, and described O-ring seal is arranged in described seal groove.
2. a kind of probe of thermal type flow sensor according to claim 1, is characterized in that, described detection part also comprises the copper foil layer for strengthening signal, and described copper foil layer is arranged on the bottom of described flexible PCB.
3. a kind of probe of thermal type flow sensor according to claim 1, is characterized in that, described platinum resistance is provided with two.
4. a kind of probe of thermal type flow sensor according to claim 2, is characterized in that, the thickness of described copper foil layer is 12 μm.
5. a kind of probe of thermal type flow sensor according to claim 1, is characterized in that, the wall thickness of described probe body is 0.3 ㎜.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310350838.9A CN103411644B (en) | 2013-08-13 | 2013-08-13 | A kind of probe of thermal type flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310350838.9A CN103411644B (en) | 2013-08-13 | 2013-08-13 | A kind of probe of thermal type flow sensor |
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| Publication Number | Publication Date |
|---|---|
| CN103411644A CN103411644A (en) | 2013-11-27 |
| CN103411644B true CN103411644B (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310350838.9A Active CN103411644B (en) | 2013-08-13 | 2013-08-13 | A kind of probe of thermal type flow sensor |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441462A (en) * | 2016-10-25 | 2017-02-22 | 伊玛精密电子（苏州）有限公司 | Hygiene-class flow sensor probe |
| CN108643987A (en) * | 2018-04-25 | 2018-10-12 | 天津天传电子有限公司 | Engine motor oil cutout detection switch and temperature detection integrated apparatus |
| CN111272242B (en) * | 2020-03-06 | 2021-11-30 | 玻尔量子(厦门)科技有限公司 | Intelligent sensor for treating atomized gas flow of lung diseases |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2171799A (en) * | 1985-02-14 | 1986-09-03 | Nippon Soken | Mounting temperature-dependent fluid flow resistance sensors |
| US5428994A (en) * | 1992-10-02 | 1995-07-04 | Klaus Kobold | Calorimetric flow indicator |
| JPH0954110A (en) * | 1995-08-10 | 1997-02-25 | Ngk Spark Plug Co Ltd | Thermal type flow velocity sensor |
| CN101236099A (en) * | 2007-02-02 | 2008-08-06 | 河南光力科技股份有限公司 | Integral flux, wind velocity sensor |
| CN202582624U (en) * | 2012-05-22 | 2012-12-05 | 合肥科迈捷智能传感技术有限公司 | Thermal gas flowmeter for mine |
| CN203657860U (en) * | 2013-08-13 | 2014-06-18 | 苏州伊玛传感技术科研有限公司 | Thermal flow sensor probe |
-
2013
- 2013-08-13 CN CN201310350838.9A patent/CN103411644B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2171799A (en) * | 1985-02-14 | 1986-09-03 | Nippon Soken | Mounting temperature-dependent fluid flow resistance sensors |
| US5428994A (en) * | 1992-10-02 | 1995-07-04 | Klaus Kobold | Calorimetric flow indicator |
| JPH0954110A (en) * | 1995-08-10 | 1997-02-25 | Ngk Spark Plug Co Ltd | Thermal type flow velocity sensor |
| CN101236099A (en) * | 2007-02-02 | 2008-08-06 | 河南光力科技股份有限公司 | Integral flux, wind velocity sensor |
| CN202582624U (en) * | 2012-05-22 | 2012-12-05 | 合肥科迈捷智能传感技术有限公司 | Thermal gas flowmeter for mine |
| CN203657860U (en) * | 2013-08-13 | 2014-06-18 | 苏州伊玛传感技术科研有限公司 | Thermal flow sensor probe |
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| CN103411644A (en) | 2013-11-27 |
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Effective date of registration: 20160928 Address after: 215000 No. 566, Yang Cheng Road, Xiangcheng Economic Development Zone, Jiangsu, Suzhou Patentee after: EMA Electronics Ltd. Address before: 215000 scientific research building, No. 566, Cheng Yang Road, Xiangcheng Economic Development Zone, Jiangsu, Suzhou 3F Patentee before: Suzhou Ema Electronics Ltd. |