CN103411644A - Probe of thermal type flow sensor - Google Patents
Probe of thermal type flow sensor Download PDFInfo
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- CN103411644A CN103411644A CN2013103508389A CN201310350838A CN103411644A CN 103411644 A CN103411644 A CN 103411644A CN 2013103508389 A CN2013103508389 A CN 2013103508389A CN 201310350838 A CN201310350838 A CN 201310350838A CN 103411644 A CN103411644 A CN 103411644A
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- probe
- probe body
- flow rate
- flexible pcb
- rate sensor
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Abstract
The invention discloses a probe of a thermal type flow sensor. The probe of the thermal type flow sensor comprises a detection component and a main body structure component, and one end of the detection component is arranged inside the main body structure component. Through the application of the technical scheme of the probe of the thermal type flow sensor, not only can micro flows be measured, but also relative large flows can be measured, and signals are stable and not easy to be affected by vibration; meanwhile, the signals of the probe are effectively enhanced, the response speed is increased, and flows of high accuracy and wide range can be measured.
Description
Technical field
The present invention relates to a kind of probe, be specifically related to a kind of thermal flow rate sensor probe.
Background technology
In prior art, the probe of flow sensor skill is carried signal to sensor, and the signal output of probe directly determines sensing range, stability and the precision of whole flow sensor.Traditional flow sensor probe is the circuit formed with thermistor and heating resistor, does not structurally take measure effectively to solve the problem of heat conduction.Mainly there is following defect in traditional thermal flow rate sensor probe: can only measure the liquid of tiny flow quantity, and the signal of output is little, 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 thermal flow rate sensor probe, be not confined to the tiny flow quantity scope, can measure larger flow, and signal stabilization is not subject to the impact shaken; Probe signal is increased, and reaction velocity accelerates, and can measure the flow of high precision, wide region.
For achieving the above object, technical scheme of the present invention is as follows: a kind of thermal flow rate sensor probe, 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 plate, platinum resistance and heating resistor, described platinum resistance and heating resistor are separately positioned on the top layer of described flexible PCB plate, and described platinum resistance is arranged on the end near described flexible PCB plate;
Described main structural component comprises probe body, air chamber spare, spring, Teflon top cover, attaching nut, jump ring and O-ring seal, described air chamber spare is arranged on the inside of described probe body, described air chamber spare 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's one end, the other end of described probe body also is provided with seal groove, and described O-ring seal is arranged in described seal groove.
Preferably, described detection part also comprises that described copper foil layer is arranged on the bottom of described flexible PCB plate be used to strengthening the copper foil layer of signal.
Preferably, described platinum resistance is provided with two.
Preferably, the thickness of described copper foil layer is 12 μ m.
Preferably, the wall thickness of described probe body is 0.3 ㎜.
Adopt the beneficial effect of the technical program to be: be not confined to the tiny flow quantity scope, can measure larger flow, and signal stabilization not to be subject to the impact shaken; Probe signal is increased, and reaction velocity accelerates, and can measure the flow of high precision, wide region.
The accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in embodiment of the present invention technology, below will the accompanying drawing of required use in the embodiment technical description be briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
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 represented corresponding component title of letter in figure:
1. flexible PCB plate 2. platinum resistance 3. heating resistor 4. probe body 5. air chamber spare 6. spring 7. Teflon top cover 8. attaching nut's 9. jump ring 10. O-ring seal 11. groove 12. seal groove 13. copper foil layers.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, belong to the scope of protection of the invention.
As shown in Figure 1, Figure 2 and Figure 3, a kind of thermal flow rate sensor probe, comprise detection part and main structural component, one end of detection part is arranged in main structural component, detection part comprises flexible PCB plate 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 plate 1, and platinum resistance 2 is arranged on the end near flexible PCB plate 1;
Main structural component comprises probe body 4, air chamber spare 5, spring 6, Teflon top cover 7, attaching nut 8, jump ring 9 and O-ring seal 10, air chamber spare 5 is arranged on the inside of probe body 4, air chamber spare 5 is provided with groove 11, spring 6 one ends are arranged in groove 11, Teflon top cover 7 is set in spring 6 other ends, attaching nut 8 is arranged on the outside of probe body 4, jump ring 9 is fixedly connected on attaching nut's 8 one ends, the other end of probe body 4 also is provided with seal groove 12, and O-ring seal 10 is arranged in seal groove 12.
Detection part also comprises that copper foil layer 13 is arranged on the bottom of described flexible PCB plate be used to strengthening the copper foil layer of signal.The thickness of copper foil layer is 12 μ m.Flexible PCB plate 1 is double layer design, by bottom, increasing by the copper foil layer 13 of 12 μ m, can strengthen signal and thermal conductivity.
Platinum resistance 2 is provided with two.The wall thickness of probe body 4 is 0.3mm, probe body 4 high conformities.Spring 6 is fixed on attaching nut 8 on probe body 4, and coordinates probe body 4 is arranged in seal groove 12 with O-ring seal 10, and spring 6 withstands the position of platinum resistance 2 on flexible PCB plate 1, and flexible PCB plate 1 integral body is fixed on the inside of probe body 4.The effect of air chamber spare 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 plate 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.
Adopt the beneficial effect of the technical program to be: be not confined to the tiny flow quantity scope, can measure larger flow, and signal stabilization not to be subject to the impact shaken; Probe signal is increased, and reaction velocity accelerates, and can measure the flow of high precision, wide region.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.Multiple modification to these embodiment will be apparent for those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the spirit or scope of the present invention, realization in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (5)
1. a thermal flow rate sensor is popped one's head in, it is characterized in that, comprise detection part and main structural component, described detection part comprises flexible PCB plate, platinum resistance and heating resistor, described platinum resistance and heating resistor are separately positioned on the top layer of described flexible PCB plate, and described platinum resistance is arranged on the end near described flexible PCB plate;
Described main structural component comprises probe body, air chamber spare, spring, Teflon top cover, attaching nut, jump ring and O-ring seal, described air chamber spare is arranged on the inside of described probe body, described air chamber spare 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's one end, the other end of described probe body also is provided with seal groove, and described O-ring seal is arranged in described seal groove.
2. a kind of thermal flow rate sensor probe according to claim 1, is characterized in that, described detection part also comprises that described copper foil layer is arranged on the bottom of described flexible PCB plate be used to strengthening the copper foil layer of signal.
3. a kind of thermal flow rate sensor probe according to claim 1, is characterized in that, described platinum resistance is provided with two.
4. a kind of thermal flow rate sensor probe according to claim 1, is characterized in that, the thickness of described copper foil layer is 12 μ m.
5. a kind of thermal flow rate sensor probe 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 |
Publications (2)
| Publication Number | Publication Date |
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| CN103411644A true CN103411644A (en) | 2013-11-27 |
| CN103411644B 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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Cited By (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 |
| CN111272242A (en) * | 2020-03-06 | 2020-06-12 | 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 |
Cited By (4)
| 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 |
| CN111272242A (en) * | 2020-03-06 | 2020-06-12 | 玻尔量子(厦门)科技有限公司 | Intelligent sensor for treating atomized gas flow of lung diseases |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN103411644B (en) | 2016-03-16 |
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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. |