CN113340465A - Quick response temperature sensing probe and temperature sensor - Google Patents
Quick response temperature sensing probe and temperature sensor Download PDFInfo
- Publication number
- CN113340465A CN113340465A CN202110475283.5A CN202110475283A CN113340465A CN 113340465 A CN113340465 A CN 113340465A CN 202110475283 A CN202110475283 A CN 202110475283A CN 113340465 A CN113340465 A CN 113340465A
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- 239000000523 sample Substances 0.000 title claims abstract description 34
- 239000011521 glass Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims 2
- 239000011324 bead Substances 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
- G01K13/024—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow of moving gases
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
- G01K1/10—Protective devices, e.g. casings for preventing chemical attack
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention provides a quick response temperature sensing probe and a temperature sensor, wherein the temperature sensing probe comprises a base and a plurality of thermoelectric elements arranged on the base; the base is a cylinder and comprises a first end, a second end and a plurality of wire fixing grooves which are arranged at intervals and extend between the first end and the second end, and the thermoelectric element comprises a linear main body and a temperature sensing sensitive part, wherein the linear main body is arranged along the wire fixing grooves; the wire fixing grooves correspond to the thermoelectric elements one by one, extend to the first end along the second end, then stretch across the first end and extend to the second end from the first end, the two ends of the linear main body extend out of the base along the second end, and the temperature sensing sensitive parts of the thermoelectric elements are arranged on the same plane and are arranged on the end face of the first end. Through the mode, the thermoelectric elements with extremely fine diameters are integrated, so that the working redundancy is improved, and the reliability is improved; the temperature sensing sensitive parts of the thermoelectric elements directly sense the temperature of the measured medium, and the response time is shorter.
Description
Technical Field
The invention relates to the technical field of temperature sensors, in particular to a quick-response temperature sensing probe and a temperature sensor.
Background
In an automatic control system of an aircraft engine, the temperature of gas in the engine needs to be monitored in real time, particularly in the engine with higher performance requirements, the reliability, response time and corrosion resistance of a temperature sensing element have strict requirements, and the current temperature sensor with a probe and a package generally has longer response time and does not meet the standard of the corrosion resistance without the package.
In view of the above, it is desirable to provide a new temperature sensing probe and a temperature sensor with fast response to solve the above drawbacks.
Disclosure of Invention
Based on the temperature sensor, the invention provides the quick-response temperature sensing probe and the temperature sensor.
The invention provides a quick response temperature sensing probe, which comprises a base and a plurality of thermoelectric elements arranged on the base; the base is a cylinder and comprises a first end and a second end which are opposite to each other and a plurality of wire fixing grooves which are arranged at intervals and extend between the first end and the second end, and the thermoelectric element comprises a linear main body arranged along the wire fixing grooves and a temperature sensing sensitive part arranged on the linear main body;
the wire fixing grooves correspond to the thermoelectric elements one to one, extend to the first end along the second end, then cross over the first end, and extend to the second end from the first end, two ends of the linear main body extend out of the base along the second end, and the temperature sensing sensitive parts of the thermoelectric elements are arranged on the same plane and are arranged on the end face of the first end.
In one embodiment, the wire fixing groove includes a first groove, a second groove symmetrically disposed with the first groove, and a switching groove connecting the first groove and the second groove, the first groove and the second groove both extend between the first end and the second end, the switching groove includes a support portion falling on the end face of the first end and an inclined portion extending from the support portion, and the temperature sensing sensitive portion is fixedly disposed on the support portion.
In one embodiment, the temperature sensing probe includes a plurality of insulating particles, and the insulating particles are embedded in the wire fixing groove and are disposed outside the wire-shaped body.
In one embodiment provided, the insulating particles are an interference fit with the base.
In one embodiment, the temperature-sensitive portions of adjacent thermoelectric elements are staggered, and the temperature-sensitive portions of several thermoelectric elements form a wave structure.
In one embodiment, the temperature-sensitive portions of the thermoelectric elements are aligned in a straight line.
In one embodiment provided, the temperature sensitive portion is externally printed with a glass layer.
In one embodiment provided, the linear body is externally printed with a glass layer.
In one embodiment provided, the first end has a glass layer printed on an end face thereof.
The invention also provides a temperature sensor which comprises the quick response temperature sensing probe.
The invention has the beneficial effects that the invention provides the quick response temperature sensing probe and the temperature sensor, wherein the temperature sensing probe comprises a base and a plurality of thermoelectric elements arranged on the base; the base is a cylinder and comprises a first end and a second end which are opposite to each other and a plurality of wire fixing grooves which are arranged at intervals and extend between the first end and the second end, and the thermoelectric element comprises a linear main body arranged along the wire fixing grooves and a temperature sensing sensitive part arranged on the linear main body; the wire fixing grooves correspond to the thermoelectric elements one to one, extend to the first end along the second end, then cross over the first end, and extend to the second end from the first end, two ends of the linear main body extend out of the base along the second end, and the temperature sensing sensitive parts of the thermoelectric elements are arranged on the same plane and are arranged on the end face of the first end. Through the mode, the thermoelectric elements with extremely fine diameters are integrated, so that the working redundancy is improved, and the reliability is improved; the temperature sensing sensitive parts of the thermoelectric elements directly sense the temperature of the measured medium, and the response time is shorter.
Drawings
Fig. 1 is a first view structural diagram of a fast response temperature sensing probe according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a first view structure of a fast response temperature sensing probe according to an embodiment of the present invention;
FIG. 3 is an end view of the first end of the base shown in FIG. 1;
FIG. 4 is a schematic structural view of an end face of the first end of the base shown in FIG. 1;
FIG. 5 is a schematic cross-sectional view of the groove taken along the line A-A;
FIG. 6 is a schematic view of a first structure of the arrangement of the temperature sensitive parts on the first end surface;
fig. 7 is a second structural schematic diagram of the arrangement of the temperature sensing sensitive parts on the second end surface;
the meaning of the reference symbols in the drawings is:
a temperature-sensitive probe 100; a base 1; a first end 11; a second end 12; a wire fixing groove 13; a first groove 131; a second groove 132; the transfer groove 133; a support part a; an inclined part b; a thermoelectric element 2; a linear body 21; a temperature sensitive portion 22; and an insulating pellet 3.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As shown in fig. 1 to 4, an embodiment of the present invention provides a fast response temperature sensing probe 100, the temperature sensing probe 100 integrates a plurality of thermoelectric elements 2, each thermoelectric element 2 corresponds to a response channel, the present invention is provided with three thermoelectric elements 2 corresponding to three channels, and in practical application, two channels, four channels or more channels may be provided, which correspond to two thermoelectric elements 2, four thermoelectric elements 2 or more thermoelectric elements 2, respectively. The temperature sensing probe 100 includes a base 1 and a plurality of thermoelectric elements 2 fixed on the base 1. The wire fixing grooves 13 and the thermoelectric elements 2 are arranged in one-to-one correspondence.
Wherein the base 1 is a cylinder, preferably a circular cylinder, comprising a first end 11 and a second end 12 arranged opposite to each other. The base 1 is provided with a plurality of wire fixing grooves 13, and the wire fixing grooves 13 are symmetrically arranged at intervals and extend between the first end 11 and the second end 12. The wire fixing groove 13 extends from the second end 12 to the first end 11 to form a first groove 131, then forms a transfer groove 133 across the first end 11, and further forms a second groove 132 extending from the first end 11 to the second end 12. The first groove 131 and the second groove 132 both extend between the first end 11 and the second end 12, the first groove 131 and the second groove 132 are symmetrically arranged, and the switching groove 133 connects the first groove 131 and the second groove 132.
The thermoelectric element 2 includes a linear body 21 arranged along the wire fixing groove 13 and a temperature sensitive portion provided on the linear body 21. The two ends of the linear body 21 extend out of the base 1 along the second end 12, and the temperature sensitive parts of the thermoelectric elements 2 are arranged on the same plane and on the end surface of the first end 11.
The quick response temperature sensing probe 100 of the embodiment of the invention integrates the plurality of thermoelectric elements 2, when in detection, the first end 11 faces to a position to be detected, and all temperature sensing sensitive parts of the plurality of thermoelectric elements 2 are arranged on the end surface of the first end 11 to form a planar temperature domain, so that the measurement precision is higher; the plurality of thermoelectric elements 2 improve the working redundancy and increase the reliability; the temperature sensing sensitive parts of the plurality of thermoelectric elements 2 directly sense the temperature of the measured medium, and the response time is shorter.
In an alternative embodiment, in order to better fix the temperature sensitive portion on the end surface and receive the airflow at the position to be measured without hindrance, the adapting groove 133 includes a supporting portion a falling on the end surface of the first end 11 and an inclined portion b extending from the supporting portion a, and the temperature sensitive portion is fixed on the supporting portion a. The inclined part b can avoid blocking the airflow from flowing to the temperature sensitive part on the supporting part a.
In an optional embodiment, the temperature-sensitive portions of the adjacent thermoelectric elements 2 are staggered, the temperature-sensitive portions of the plurality of thermoelectric elements 2 form a wave structure, and the wave structure is perpendicular to the direction of the airflow at the position to be measured, so that the temperature-sensitive portions of all the thermoelectric elements 2 are not blocked, the airflow is fully contacted, and the measurement accuracy is higher.
In an optional embodiment, the temperature-sensitive portions of the plurality of thermoelectric elements 2 form a straight line, and the straight line is perpendicular to the flow direction of the airflow at the position to be measured, so that the temperature-sensitive portions of all the thermoelectric elements 2 are not blocked by each other, and are in full contact with the airflow, and the measurement accuracy is higher.
In an optional embodiment, the temperature sensing probe 100 includes a plurality of insulating particles 3, and the plurality of insulating particles 3 are embedded in the wire fixing groove 13 and disposed outside the linear body 21 to objectively limit the thermoelectric element 2, so as to prevent the thermoelectric element 2 from changing in spatial position during sintering, and contacting other conductive objects to cause short circuit. Optionally, the insulating particles 3 are in interference fit with the base 1, so that the insulating particles 3 can be tightly connected with the base 1.
In an alternative embodiment, since the temperature sensitive portion 22 is crucial to the accuracy of the measurement result of the temperature sensing probe 100, a thin glass layer is printed outside the temperature sensitive portion 22, and the thickness of the glass layer is in the micrometer range, which not only improves the heat conduction efficiency and reduces the response time, but also plays a role in protection and improves the corrosion resistance. Optionally, a glass layer is printed outside the linear main body 21 to prevent the thermoelectric element 2 from contacting with a corrosive medium, thereby improving corrosion resistance. Optionally, a glass layer is printed on the end face of the first end 11, so as to further protect the temperature sensitive portion 22 from corrosion.
The present invention further provides a temperature sensor, which includes the above-mentioned fast response temperature sensing probe 100. The temperature sensor of the invention can improve the measurement precision, increase the reliability of the measurement structure and shorten the response time.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only express preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A quick response temperature sensing probe is characterized by comprising a base and a plurality of thermoelectric elements arranged on the base; the base is a cylinder and comprises a first end and a second end which are opposite to each other and a plurality of wire fixing grooves which are arranged at intervals and extend between the first end and the second end, and the thermoelectric element comprises a linear main body arranged along the wire fixing grooves and a temperature sensing sensitive part arranged on the linear main body;
the wire fixing grooves correspond to the thermoelectric elements one to one, extend to the first end along the second end, then cross over the first end, and extend to the second end from the first end, two ends of the linear main body extend out of the base along the second end, and the temperature sensing sensitive parts of the thermoelectric elements are arranged on the same plane and are arranged on the end face of the first end.
2. The temperature sensing probe of claim 1, wherein the wire fixing groove comprises a first groove, a second groove symmetrically disposed with respect to the first groove, and a transition groove connecting the first groove and the second groove, the first groove and the second groove both extend between the first end and the second end, the transition groove comprises a support portion falling on an end surface of the first end and an inclined portion extending from the support portion, and the temperature sensing sensitive portion is fixedly disposed on the support portion.
3. The temperature-sensing probe according to claim 1, wherein the temperature-sensing probe comprises a plurality of insulating particles, and the insulating particles are embedded in the wire fixing grooves and are disposed outside the wire-shaped body.
4. The temperature-sensitive probe of claim 1, wherein the insulating beads are in an interference fit with the base.
5. The temperature-sensitive probe according to claim 2, wherein the temperature-sensitive portions of the adjacent thermoelectric elements are staggered, and the temperature-sensitive portions of the plurality of thermoelectric elements form a wave structure.
6. The temperature-sensing probe according to claim 2, wherein the temperature-sensing sensitive portions of the plurality of pyroelectric elements are aligned.
7. A temperature-sensitive probe according to claim 1, wherein the temperature-sensitive portion is externally printed with a glass layer.
8. A temperature-sensitive probe according to claim 1, wherein a glass layer is printed on the outside of the linear body.
9. A temperature-sensitive probe according to claim 1, wherein a glass layer is printed on an end face of the first end.
10. A temperature sensor comprising the rapid response temperature-sensitive probe of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110475283.5A CN113340465B (en) | 2021-04-29 | 2021-04-29 | Quick response temperature sensing probe and temperature sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110475283.5A CN113340465B (en) | 2021-04-29 | 2021-04-29 | Quick response temperature sensing probe and temperature sensor |
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| Publication Number | Publication Date |
|---|---|
| CN113340465A true CN113340465A (en) | 2021-09-03 |
| CN113340465B CN113340465B (en) | 2023-05-05 |
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| CN202110475283.5A Active CN113340465B (en) | 2021-04-29 | 2021-04-29 | Quick response temperature sensing probe and temperature sensor |
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|---|---|---|---|---|
| JPS5950323A (en) * | 1982-09-16 | 1984-03-23 | Toshiba Corp | Thermocouple |
| JPS5958883A (en) * | 1982-09-29 | 1984-04-04 | Toshiba Corp | Thermocouple |
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| US20070018778A1 (en) * | 2005-07-25 | 2007-01-25 | Hiroyuki Abe | Temperature-sensing device |
| CN103403512A (en) * | 2010-12-30 | 2013-11-20 | Sc2N公司 | Temperature-measuring device for a gas pipe connected to a heat engine of a motor vehicle, and heat engine and vehicle provided with said device |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5950323A (en) * | 1982-09-16 | 1984-03-23 | Toshiba Corp | Thermocouple |
| JPS5958883A (en) * | 1982-09-29 | 1984-04-04 | Toshiba Corp | Thermocouple |
| KR100252417B1 (en) * | 1996-01-08 | 2000-04-15 | 모리시타 요이찌 | Automobile for using a temperature detective apparatus |
| US6367974B1 (en) * | 1999-04-19 | 2002-04-09 | Peter Lin | Thermocouple apparatus and well for containers having a flanged access opening |
| CN2711711Y (en) * | 2004-05-18 | 2005-07-20 | 李明斌 | Multi-insulation high temperature resisting thermocouple wire |
| US20070018778A1 (en) * | 2005-07-25 | 2007-01-25 | Hiroyuki Abe | Temperature-sensing device |
| CN103403512A (en) * | 2010-12-30 | 2013-11-20 | Sc2N公司 | Temperature-measuring device for a gas pipe connected to a heat engine of a motor vehicle, and heat engine and vehicle provided with said device |
| US20160033338A1 (en) * | 2013-01-24 | 2016-02-04 | Dekema Dental-Keramiköfen GmbH | Thermal Element |
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| WO2018134085A1 (en) * | 2017-01-17 | 2018-07-26 | Epcos Ag | Sensor |
| CN209689778U (en) * | 2019-05-12 | 2019-11-26 | 苏州班奈特电子有限公司 | One kind being suitable for water heater superconduction thermal temperature sensor |
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| CN113340465B (en) | 2023-05-05 |
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Denomination of invention: Quick response temperature probe and temperature sensor Granted publication date: 20230505 Pledgee: Shanghai Rural Commercial Bank Co.,Ltd. Qingpu sub branch Pledgor: SMARTSTONE (SHANGHAI) SENSING & CONTROL TECH CO.,LTD. Registration number: Y2024310000067 |