CN220625547U - Sheet type temperature sensor for surface temperature measurement - Google Patents
Sheet type temperature sensor for surface temperature measurement Download PDFInfo
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- CN220625547U CN220625547U CN202323530346.6U CN202323530346U CN220625547U CN 220625547 U CN220625547 U CN 220625547U CN 202323530346 U CN202323530346 U CN 202323530346U CN 220625547 U CN220625547 U CN 220625547U
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- heat
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- heat conducting
- thermistor
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- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 17
- 238000009413 insulation Methods 0.000 claims abstract description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000004677 Nylon Substances 0.000 claims abstract description 9
- 229910052802 copper Inorganic materials 0.000 claims abstract description 9
- 239000010949 copper Substances 0.000 claims abstract description 9
- 229920001778 nylon Polymers 0.000 claims abstract description 9
- 229920002545 silicone oil Polymers 0.000 claims abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- 238000004321 preservation Methods 0.000 claims description 10
- 239000004964 aerogel Substances 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000007547 defect Effects 0.000 abstract description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 20
- 238000005259 measurement Methods 0.000 description 16
- 229910052697 platinum Inorganic materials 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 5
- 239000011324 bead Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000004965 Silica aerogel Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses a sheet type temperature sensor for measuring surface temperature, which comprises a thermistor, an insulating layer, a heat conducting shell, a wire and a heat insulation base, wherein one end of the wire is connected with the anode and the cathode of the thermistor, the other end of the wire passes through the heat insulation base and is connected with an external receiving end, the thermistor is packaged in the heat conducting shell through the insulating layer, the heat conducting shell is of a round sheet type structure, the upper end face of one side of the heat conducting shell is set as a measuring surface, the lower end face of the other side of the heat conducting shell is set as an insulating surface, the heat conducting shell is embedded in the end face of the heat insulation base, the measuring surface is higher than the end face of the heat insulation base, and the measuring surface is in contact with the surface of an object to be measured. According to the utility model, the heat conduction silicone oil is poured into the insulating layer in the heat conduction shell, and the measuring surface is made of red copper, so that the heat conductivity is improved; the insulating surface forms a heat-insulating film layer and the heat-insulating base made of nylon is adopted, so that the interference of external environment is avoided, temperature compensation is not needed, the contact area for temperature measurement is enlarged, and the defect of overlarge heat conductivity is overcome.
Description
Technical Field
The utility model relates to the technical field of surface temperature measurement, in particular to a sheet type temperature sensor for surface temperature measurement.
Background
The accurate measurement of the surface temperature is a difficult problem in the metering industry at present, and a thermocouple or a platinum resistance temperature sensor is generally adopted for the measurement of the surface temperature of a heating plate, a heating platform and the like. The main defects are as follows: the thermocouple sensor is easy to be influenced by the surrounding environment, and the thermocouple has larger temperature fluctuation in measurement due to the need of temperature compensation, so that accurate measurement cannot be realized; the platinum resistance temperature sensor is adopted, and because the sensor is in line contact with a contact surface, the thermal conductivity is too small, so that accurate measurement cannot be performed.
To this end, we have devised a sheet-type temperature sensor for surface temperature measurement to solve the above problems.
Disclosure of Invention
The utility model aims to solve the defects in the prior art, and provides a sheet type temperature sensor for measuring surface temperature. The sensor overcomes the influence that the thermocouple needs temperature compensation and the thermal conductivity of the platinum resistance sensor is too small, and solves the influence of the thermal conductivity and the temperature compensation by utilizing the circular sheet type thermal resistance sensor. Practice proves that the error precision of the sensor is less than +/-0.5 ℃ when the surface temperature of a heating platform and the like is calibrated, the magnitude tracing work can be accurately carried out, and the problem of inaccurate measurement of the surface temperature of an object is solved.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a sheet temperature sensor for surface temperature measurement, includes thermistor, insulating layer, heat conduction shell, wire and heat preservation base, the one end of wire with thermistor's positive negative pole is connected, and the other end of wire passes heat preservation base is connected with peripheral hardware receiving terminal, and thermistor passes through the insulating layer encapsulation is in the inside of heat conduction shell, and the heat conduction shell is circular sheet structure, and the up end of one side of heat conduction shell sets up to the measuring surface, and the lower terminal surface of opposite side sets up to the insulating surface, and the heat conduction shell embedding is in the heat preservation base terminal surface, just the measuring surface is higher than the terminal surface of heat preservation base, and the measuring surface contacts with the surface of measured object. In order to improve the accuracy of measurement and the convenience when using, the heat preservation base upper end seted up with the same size of heat conduction shell diameter's embedded groove, one side of embedded groove has been seted up and has been used for the wire runs through the threading groove that passes through, and the heat conduction shell inlays in the embedded groove, with the encapsulation in the heat conduction shell the wire other end that the positive negative pole of thermistor is connected runs through the threading groove.
As a further preferable embodiment of the utility model, the thermistor is a bead NTC thermistor, and a bead precision type NTC (Negative Temperature Coefficient) thermistor with a negative temperature coefficient is adopted.
As a further preferable scheme of the utility model, the insulating layer is wrapped outside the thermistor, and heat conduction silicone oil is filled in the insulating layer, wherein the heat conduction silicone oil has good heat conduction performance and strong electric insulation performance, and the heat conduction coefficient is 1.0 w/mk-4.5 w/mk.
As a further preferable scheme of the utility model, the measuring surface is made of red copper, and the high thermal conductivity coefficient of the red copper is 386.4W/(mK), so that the response speed is high and the thermal conductivity is high during measurement; the surface of the insulating surface is covered by silicon dioxide nano aerogel to form a heat insulation film layer, and the heat conductivity coefficient of the insulating surface is as follows: 0.017-0.023W/(mK), as a super heat insulation material, the silica aerogel has extremely high porosity and extremely low heat conductivity.
As a further preferable scheme of the utility model, the surface of the lead adopts a silver plating layer, and the silver plating lead has the characteristics of high reflectivity and low signal loss.
As a further preferable scheme of the utility model, the heat-insulating base is made of nylon materials, and in order to prevent the heat of the non-contact surface of the heat-conducting shell from being rapidly dissipated during measurement, the heat-insulating base is made of nylon materials, and the heat conductivity coefficient of nylon is as follows: 0.26 to 0.35W/(mK).
Compared with the prior art, the utility model has the beneficial effects that: the temperature sensor has the advantages of large measurement contact area, high heat conductivity, good heat insulation and heat preservation performance, high temperature measurement accuracy and no interference from external temperature environment; the temperature sensor is matched with the heat-preserving base for installation and use, the heat-conducting shell of the temperature sensor is designed into a sheet shape, the thermistor is packaged in the heat-conducting shell, the two sides of the heat-conducting shell are respectively provided with a measuring surface and an insulating surface, the insulating layer in the heat-conducting shell is filled with heat-conducting silicone oil, and the measuring surface is made of red copper, so that the heat conductivity is improved; the insulating surface is covered by the silica nano aerogel to form a heat-insulating film layer, and the heat-insulating base made of nylon is added, so that the temperature sensor is not influenced by the surrounding environment when measuring the temperature, and temperature compensation is not needed; meanwhile, the arrangement of the measuring surface also expands the contact area for measuring the temperature, overcomes the technical defect that the thermal conductivity of the traditional platinum resistance sensor is too small, has the error precision not more than +/-0.5 ℃ when the surface temperature of a heating platform and the like is calibrated, can accurately carry out magnitude tracing work, and solves the technical problem of inaccurate surface temperature measurement of objects in the domestic metering industry.
Drawings
FIG. 1 is a schematic diagram illustrating the installation of a lead wire and a thermal insulation base of a sheet type temperature sensor for measuring surface temperature according to the present utility model;
FIG. 2 is a schematic diagram showing the internal structure of a heat conducting shell of a sheet type temperature sensor for measuring surface temperature according to the present utility model;
FIG. 3 is a schematic diagram of a sheet-type temperature sensor for measuring surface temperature according to the present utility model;
fig. 4 is a schematic structural diagram of a thermal insulation base of a sheet-type temperature sensor for measuring surface temperature according to the present utility model.
The reference numerals in the drawings: 1. a thermistor; 2. an insulating layer; 3. a heat conductive shell; 4. an insulating surface; 5. a measurement surface; 6. a wire; 7. a heat preservation base; 8. an embedding groove; 9. a wire penetrating groove; 10. an object to be measured.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
First, the flow of the design idea of the sheet type temperature sensor for measuring the surface temperature provided by the example comprises the following steps:
the heat conduction principle of the traditional platinum resistance temperature sensor is studied, and the thermocouple is influenced by ambient temperature compensation, and by improving the heat conduction application principle, the actual detection is combined with the simulation technology, so that the sheet type temperature sensor is designed, and the sheet type temperature sensor is mainly characterized in that: the heat-conducting shell is made of heat-sensitive elements, red copper, wires and a nano heat-insulating film, and finally the heat-conducting shell is packaged and then is matched with a heat-insulating base for use, so that a complete surface temperature measuring sensor is formed.
Based on the design concept, as shown in fig. 1-3, the present embodiment specifically proposes a sheet-type temperature sensor for surface temperature measurement, where the composition structure of the sheet-type temperature sensor includes a thermistor 1, an insulating layer 2, a heat conducting shell 3, a wire 6 and a heat insulation base 7.
The connection relationship between the structures is as follows: firstly, one end of a lead 6 is connected with the anode and the cathode of a thermistor 1, the other end of the lead 6 passes through a heat insulation base 7 to be connected with a peripheral receiving end, the thermistor 1 is packaged in a heat conduction shell 3 through an insulating layer 2, the heat conduction shell 3 is of a round sheet type structure, the heat conduction shell 3 is embedded in the end face of the heat insulation base 7, the measuring face 5 is higher than the end face of the heat insulation base 7, and the measuring face 5 is in contact with the surface of a measured object 10.
In this embodiment, the thermistor 1 is a bead NTC thermistor, and the bead precision type NTC (Negative Temperature Coefficient) thermistor has a negative temperature coefficient, and is manufactured by using metal oxides such as manganese, cobalt, nickel, copper and the like as main materials and adopting a ceramic process.
In the embodiment, the surface of the lead 6 is silver-plated, the length of the lead is 1-2 m, and the silver-plated lead has the characteristics of high reflectivity and low signal loss.
The insulating layer 2 is wrapped outside the thermistor 1, heat conduction silicone oil is filled in the insulating layer 2, the heat conduction silicone oil has good heat conduction performance and strong electrical insulation performance, the heat conduction coefficient is 1.0W/(mK) -4.5W/(mK), the insulating layer 2 not only ensures the working performance of electronic components inside the thermistor 1, but also can rapidly and accurately measure the temperature of the surface of the measured object 10 by the thermistor 1.
In the embodiment, the heat conducting shell 3 is designed into a circular sheet shape, so that the contact area with the surface of the measured object 10 is increased, and the effectiveness and accuracy of measuring the surface temperature of the measured object 10 are improved. The specific heat conduction shell 3 has the structure that: the upper end surface of one side of the heat conducting shell 3 is set as a measuring surface 5, and the lower end surface of the other side is set as an insulating surface 4.
The measuring surface 5 is made of red copper, and the high heat conductivity coefficient of the red copper is 386.4W/(mK), so that the response speed is high and the heat conductivity is high during measurement.
In order to prevent rapid heat dissipation, the surface of the insulating surface 4 is covered by silica nano aerogel to form a heat-insulating film layer; the heat insulation film formed by adopting the silicon dioxide nano aerogel has the heat conductivity coefficient: 0.017-0.023W/(mK), as a super heat insulation material, the silica nano aerogel has extremely high porosity and extremely low heat conductivity.
Referring to fig. 4, for convenient use, when ensuring that the external contact is this thin slice type temperature sensor, can not cause the interference to temperature sensor's measurement, also in order to prevent the heat of the non-contact surface of heat conduction shell 3 when measuring simultaneously and scatter and disappear fast, the heat preservation base 7 of this embodiment adopts nylon material preparation, the coefficient of heat conductivity of nylon: 0.26 to 0.35W/(mK).
In order to match with the installation of the heat conducting shell 3, an embedded groove 8 with the same diameter as the heat conducting shell 3 is formed in the upper end of the heat insulating base 7, a threading groove 9 for the wire 6 to pass through is formed in one side of the embedded groove 8, the heat conducting shell 3 is embedded in the embedded groove 8, and the other end of the wire 6 connected with the positive electrode and the negative electrode of the thermistor 1 packaged in the heat conducting shell 3 passes through the threading groove 9 and then is connected with an external temperature receiving end.
The sheet type temperature sensor is tightly pressed on the surface of a measured object 10 through a heat preservation base 7 made of nylon, the surface temperature set value of the measured object 10 is 35.0 ℃, and the measurement result is shown in the following table 1:
table 1 sheet temperature sensor measurement results
If a conventional platinum resistance temperature sensor is used, the same apparatus is measured and the results obtained are shown in Table 2 below:
table 2 platinum resistance temperature sensor measurements
By comparing tables 1 and 2, the upper and lower deviations of the measured object 10 according to the present utility model are: the conventional platinum resistance temperature sensor measures the upper and lower deviations of the measured object 10 at-0.1 ℃ and-0.5 ℃ as follows: -1.3 ℃ and-1.8 ℃. The sensor overcomes the influence that the thermocouple needs temperature compensation and the thermal conductivity of the platinum resistance sensor is too small, the error precision is not more than +/-0.5 ℃ when the surface temperature of a heating platform and the like is calibrated, the magnitude tracing work can be accurately carried out, and the technical problem of inaccurate surface temperature measurement of objects in the domestic metering industry is solved, so that compared with the traditional platinum resistance temperature sensor, the sensor has remarkable effect when accurately measuring the surface temperature of the objects.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (6)
1. The sheet type temperature sensor for surface temperature measurement is characterized by comprising a thermistor (1), an insulating layer (2), a heat conducting shell (3), a wire (6) and a heat insulation base (7), wherein one end of the wire (6) is connected with the anode and the cathode of the thermistor (1), the other end of the wire (6) penetrates through the heat insulation base (7) to be connected with an external receiving end, the thermistor (1) is packaged in the heat conducting shell (3) through the insulating layer (2), the heat conducting shell (3) is of a circular sheet type structure, the upper end face of one side of the heat conducting shell (3) is provided with a measuring face (5), the lower end face of the other side of the heat conducting shell is provided with an insulating face (4), the heat conducting shell (3) is embedded in the end face of the heat insulation base (7), the measuring face (5) is higher than the end face of the heat insulation base (7), and the measuring face (5) is in contact with the surface of a measured object (10). The insulation base is characterized in that an embedded groove (8) with the same diameter as the heat conducting shell (3) is formed in the upper end of the insulation base, a threading groove (9) through which the lead (6) passes is formed in one side of the embedded groove (8), the heat conducting shell (3) is embedded in the embedded groove (8), and the other end of the lead (6) connected with the positive electrode and the negative electrode of the thermistor (1) encapsulated in the heat conducting shell (3) passes through the threading groove (9).
2. A foil-type temperature sensor for surface temperature measurement according to claim 1, characterized in that the thermistor (1) is a bead-like NTC thermistor.
3. A sheet temperature sensor for surface temperature measurement according to claim 1, characterized in that the insulating layer (2) is wrapped outside the thermistor (1), and the insulating layer (2) is filled with heat conducting silicone oil.
4. The sheet type temperature sensor for surface temperature measurement according to claim 1, wherein the measuring surface (5) is made of red copper, and the surface of the insulating surface (4) is covered with silica nano aerogel to form a heat preservation film layer.
5. A sheet-type temperature sensor for surface temperature measurement according to claim 1, characterized in that the surface of the wire (6) is silver-plated.
6. A sheet-type temperature sensor for surface temperature measurement according to claim 1, wherein the heat-retaining base (7) is made of nylon material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323530346.6U CN220625547U (en) | 2023-12-25 | 2023-12-25 | Sheet type temperature sensor for surface temperature measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323530346.6U CN220625547U (en) | 2023-12-25 | 2023-12-25 | Sheet type temperature sensor for surface temperature measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220625547U true CN220625547U (en) | 2024-03-19 |
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ID=90234132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323530346.6U Active CN220625547U (en) | 2023-12-25 | 2023-12-25 | Sheet type temperature sensor for surface temperature measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220625547U (en) |
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2023
- 2023-12-25 CN CN202323530346.6U patent/CN220625547U/en active Active
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