CN211783947U - Temperature sensor and have its electromagnetism stove - Google Patents
Temperature sensor and have its electromagnetism stove Download PDFInfo
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- CN211783947U CN211783947U CN202020321385.2U CN202020321385U CN211783947U CN 211783947 U CN211783947 U CN 211783947U CN 202020321385 U CN202020321385 U CN 202020321385U CN 211783947 U CN211783947 U CN 211783947U
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- 238000004806 packaging method and process Methods 0.000 claims abstract description 44
- 239000002184 metal Substances 0.000 claims abstract description 33
- 239000003292 glue Substances 0.000 claims abstract description 29
- 230000007774 longterm Effects 0.000 claims abstract description 20
- 239000000919 ceramic Substances 0.000 claims description 28
- 230000006698 induction Effects 0.000 claims description 18
- 239000011347 resin Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- 239000004809 Teflon Substances 0.000 claims description 7
- 229920006362 Teflon® Polymers 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 2
- 238000009413 insulation Methods 0.000 abstract description 20
- 238000007789 sealing Methods 0.000 abstract description 15
- 238000010411 cooking Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 30
- 239000012790 adhesive layer Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000009529 body temperature measurement Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000012945 sealing adhesive Substances 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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- Measuring Temperature Or Quantity Of Heat (AREA)
- Induction Heating Cooking Devices (AREA)
Abstract
The utility model relates to a cooking utensil field, concretely relates to temperature sensor and have its electromagnetism stove. The thermistor is arranged in the metal heat conduction shell through the opening cavity; an insulating packaging body is arranged between the thermistor and the metal heat conduction shell; the thermistor is sealed in the insulating packaging body by a first insulating glue layer; the insulating packaging body is sealed in the metal heat conduction shell through a second insulating glue layer; triple insulation sealing of the thermistor is realized, so that safe insulation sealing can be guaranteed without grounding the temperature sensor or insulating and isolating a circuit; and the long-term temperature resistance value of the insulating packaging body is more than 350 ℃, so that the temperature sensing and control of the insulating packaging body can be safely and effectively realized when the insulating packaging body senses a high-temperature state or a dry-fire state under the condition of long-term use.
Description
Technical Field
The utility model relates to a cooking utensil field, concretely relates to temperature sensor and have its electromagnetism stove.
Background
In order to quickly and accurately measure the temperature of the bottom of a pot, the traditional induction cooker is provided with a through hole in the middle of a panel of the induction cooker, and then a sensor assembly is arranged to directly extend out of the panel to realize real-time measurement of the heat temperature of the pot on the panel; in the current temperature sensor, for better temperature transmission, a metal shell is adopted as a shell of the sensor. The basic structure is as follows: comprises a lead, a thermistor, a sensor shell and the like; the lead and the thermistor are encapsulated, insulated and cured by insulating resin, and then the encapsulated and cured thermistor is placed in the sensor shell in the middle for filling insulating resin and curing, namely the shell, the lead and the thermistor are filled by insulating resin through two times of encapsulation so as to achieve the insulating protection effect, but the insulation can not meet the triple insulation requirement, is unreliable insulation and can not meet the safety requirement; in order to ensure that insulation protection can be achieved and prevent the occurrence of safety hidden danger, grounding connection must be carried out on the shell or insulation isolation is adopted on a circuit, so that the cost is greatly improved.
In addition, because the temperature of the induction cooker is usually above 300 ℃ under the condition of dry burning, etc., the thermistor is encapsulated by resin, and the temperature resistance value of the resin is usually below 200 ℃; even if a polyimide film material with a very high temperature resistance value is used for packaging, the temperature resistance value of the long-term use is only 200-300 ℃, the temperature measurement and control of the appliance for the electromagnetic oven are carried out, the temperature sensing and further temperature control safety protection cannot be realized in a dry-burning state, and great potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems in the prior art, the utility model provides a temperature sensor and an induction cooker with the same, wherein an insulating packaging body is arranged between a thermistor and a metal heat conducting shell; the thermistor is sealed in the insulating packaging body by a first insulating adhesive layer; the insulating packaging body is sealed in the metal heat conduction shell by a second insulating glue layer; triple insulation sealing of the thermistor is realized, so that safe insulation sealing can be guaranteed without grounding the temperature sensor or insulating and isolating a circuit; and the long-term temperature resistance value of the insulating packaging body is more than 350 ℃, so that the temperature sensing and control of the insulating packaging body can be safely and effectively realized when the insulating packaging body senses a high-temperature state or a dry-fire state under the condition of long-term use.
The utility model adopts the technical proposal that:
a temperature sensor comprises a thermistor and a metal heat-conducting shell with an open cavity, wherein the thermistor is arranged in the metal heat-conducting shell through the open cavity and is provided with a lead wire extending out of the metal heat-conducting shell from the open cavity; an insulating packaging body is arranged between the thermistor and the metal heat conduction shell; the thermistor is sealed in the insulating packaging body by a first insulating glue layer; the insulating packaging body is sealed in the metal heat conduction shell through a second insulating glue layer; the long-term temperature resistance value of the insulating packaging body is more than 350 ℃.
Preferably, the material of the insulating package body is ceramic.
Preferably, the first insulating glue layer is ceramic glue; the second insulating glue layer is ceramic glue.
Preferably, the surface of the thermistor is further coated with an insulating resin layer.
Preferably, the insulating package is a ceramic tube penetrating up and down.
Preferably, the vertical distance between the top of the thermistor and the top of the insulating packaging body is h, and h is more than or equal to 1 mm.
Preferably, a heat-shrinkable insulating sleeve is arranged on the surface of the lead, and a first insulating layer and a second insulating layer are sequentially arranged between the lead and the heat-shrinkable insulating sleeve.
Preferably, the material of the first insulating layer is teflon.
The utility model also provides an electromagnetism stove, this electromagnetism stove uses above arbitrary temperature sensor.
Preferably, the induction cooker further comprises a shell, a spring support seat and a panel covering the upper part of the shell; a coil panel is arranged in the shell, and a through hole is formed in the middle of the panel; the middle part of the coil panel is provided with a panel frame hole corresponding to the through hole; the upper part of the spring supporting seat supports the temperature sensor, so that the metal heat conduction shell penetrates through the disc frame hole and can stretch up and down relative to the through hole; the bottom of the spring supporting seat is fixed on the coil panel.
The utility model has the advantages as follows:
1. an insulating packaging body is arranged between the thermistor and the metal heat conducting shell; the thermistor is sealed in the insulating packaging body by a first insulating adhesive layer; the insulating packaging body is sealed in the metal heat conduction shell by a second insulating glue layer; the long-term temperature resistance value of the insulating packaging body is more than 350 ℃. The thermistor is firstly packaged in the insulating packaging body and then sealed in the heat conduction shell, and triple insulating sealing of the thermistor is realized through the first insulating glue layer, the insulating packaging body, the second insulating glue layer and then the heat conduction shell, so that safe insulating sealing can be guaranteed without grounding the temperature sensor or insulating and isolating a circuit; the long-term temperature resistance value of the insulating packaging body is larger than 350 ℃, and the long-term temperature resistance value of the insulating packaging body is larger than 350 ℃, so that the temperature sensing and control of the insulating packaging body can be safely and effectively realized when the insulating packaging body senses a high-temperature state or a dry-fire state under the condition of long-term use.
The following are specifically mentioned: the long-term temperature resistance value as used herein refers to the maximum service temperature at which the material retains its mechanical properties as a substrate after being subjected to heat for a long period of time. Namely the maximum service temperature at which the physical properties, physical states and the like of the glass are not changed in a long-term heated state.
2. The insulating packaging body is made of ceramic, the ceramic has excellent heat conducting performance and insulating performance, and the long-term temperature resistance value of the ceramic is far higher than 350 ℃, so that the temperature sensor can accurately and effectively detect the temperature under the dry burning condition or the high-temperature condition.
3. The first insulating glue layer is ceramic glue; the second insulating glue layer is ceramic glue. The ceramic glue is selected as the sealed glue layer, so that the insulation sealing of the thermistor is further ensured, and the long-term temperature resistance value of the integral temperature sensor is ensured to be higher than 350 ℃.
4. And insulating resin is coated on the surface of the thermistor to ensure the complete insulation and solidification of the surface of the thermistor.
5. The insulating packaging body is a ceramic tube which is communicated up and down, and the vertical distance h between the top of the thermistor and the top of the insulating packaging body is more than or equal to 1 mm. The thermistor encapsulation promptly in the lumen of ceramic pipe to in order to realize complete effectual sealed, set for the distance that has 1mm at least between the perpendicular distance between the top of thermistor and the top of insulating packaging body, and then guarantee that the second sealant layer can fill sealedly, prevent thermistor direct and the lower surface direct contact at metal heat conduction shell's top, influence sealed insulating performance, and then influence temperature sensor's life-span.
6. A thermal shrinkage insulating sleeve is arranged outside the lead, and a first insulating layer and a second insulating layer are sequentially arranged between the lead and the thermal shrinkage insulating sleeve. Triple insulation sealing of the leads is achieved.
7. The first insulating layer is made of Teflon which has good anti-adhesion, heat resistance, corrosion resistance and insulating properties and can resist temperature of over 260 ℃, and the Teflon is coated outside the lead to ensure the insulation, heat resistance and good working performance of the lead.
8. The temperature of the induction cooker with the temperature sensor is generally up to 300 ℃ or even higher when the induction cooker is in a dry-burning state due to the temperature measurement of the cookware on the panel of the induction cooker, and the temperature value of the commonly packaged temperature sensor cannot reach 300 ℃ and is in a failure state; the temperature sensor does not have the problem of temperature sensing. And the temperature sensor is supported by the upper part of the spring supporting seat, so that the metal heat conduction shell passes through the disc frame hole and can extend up and down relative to the through hole on the panel; thereby realized temperature sensor monitoring panel pan's temperature, the bottom of spring support seat is fixed on the coil panel, has realized temperature sensor's stable fixed.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of a temperature sensor according to a first embodiment of the present invention.
Fig. 2 is a schematic sectional structure diagram of a temperature sensor according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of an insulating package and a thermistor according to a second embodiment of the present invention.
Fig. 4 is a schematic structural view of the electromagnetic oven of the present invention.
Fig. 5 is a schematic structural diagram of the coil panel of the present invention.
In the figure:
100-shell, 200-panel, 110-temperature sensor, 120-spring support seat; 130-coil panel, 210-through hole, 111-thermistor, 112-first insulating glue layer, 113-insulating packaging body, 114-second insulating glue layer, 115-metal heat conducting shell, 116-lead wire, 131-panel frame hole.
Detailed Description
The present invention will be further described with reference to the following specific embodiments, but the present invention is not limited to these specific embodiments. It will be recognized by those skilled in the art that the present invention encompasses all alternatives, modifications, and equivalents as may be included within the scope of the claims.
The following are specifically mentioned: the long-term temperature resistance values presented herein refer to the highest service temperature at which the material retains its mechanical properties as a substrate after prolonged exposure to heat. Namely the maximum service temperature at which the physical properties, physical states and the like of the glass are not changed in a long-term heated state.
The first embodiment is as follows:
the temperature sensor 110 shown in fig. 1 includes a thermistor 111 and a metal heat-conductive case 115 having an open cavity 1151, the thermistor 111 is mounted in the metal heat-conductive case 115 through the open cavity 1151, the thermistor 111 has leads 116 extending from the metal heat-conductive case 115 through the open cavity 1151; an insulating packaging body 113 is also arranged between the thermistor 111 and the metal heat conducting shell 115; the thermistor 111 is sealed in the insulating package 113 by the first insulating adhesive layer 112; the insulating package 113 is sealed in the metal heat conducting casing 115 by a second insulating glue layer 114; the long-term temperature resistance value of the insulating package 113 is greater than 350 ℃.
In this embodiment, the insulating package 113 is made of ceramic; the first insulating adhesive layer 112 is ceramic adhesive; the second insulating glue layer 114 is ceramic glue. The thermistor 111 is firstly packaged in the insulating packaging body 113 made of ceramic materials and then sealed in the metal heat conduction shell 115, and sequentially passes through the first insulating adhesive layer 112, the ceramic insulating packaging body 113, the second insulating adhesive layer 114 and then the metal heat conduction shell 115, so that triple insulating sealing of the thermistor 111 is realized, the ceramic has excellent heat conduction performance and insulating performance, the long-term temperature resistance value of the ceramic is far higher than 350 ℃, and the accuracy of temperature sensing of the temperature sensor 110 is further ensured, and the accurate and stable detection of the temperature can be realized in an environment with the temperature within 350 ℃. Because the temperature sensor senses temperature of a pan on a panel of the induction cooker so as to control the temperature, when the induction cooker is in a dry-burning state, the temperature of the induction cooker can reach 300 ℃ or even higher, and at the moment, because the existing temperature sensor is used for a long time, the temperature of the temperature sensor can not reach 300 ℃, the problem of ineffective temperature sensing and control and work failure is caused; the temperature sensor 110 of the present embodiment is triple insulation sealing packaged, and the ceramic insulation packaging body 113 and the ceramic adhesive are used for insulation sealing, so that the temperature sensor does not need to be grounded or a circuit does not need to be insulated and isolated, and the safe insulation sealing can be ensured; and the long-term temperature resistance value of the ceramic insulation packaging body is more than 350 ℃, so that the temperature sensor can effectively sense the temperature when being placed in an environment with the temperature within 350 ℃.
The surface of the thermistor 111 is coated with an insulating resin layer to ensure complete insulating and curing of the surface of the thermistor. The surface of the lead 116 is provided with a heat-shrinkable insulating sleeve, and a first insulating layer and a second insulating layer (not shown) are sequentially disposed between the lead and the heat-shrinkable insulating sleeve. Although the lead 116 does not directly contact the member to be measured, it is also required to be further insulated and protected against high temperature because of the high temperature environment. In this embodiment, the first insulating layer is made of teflon, and the second insulating layer is preferably made of high temperature resistant silica gel; the Teflon has good anti-adhesion, heat-resistant, corrosion-resistant and insulating properties, can resist temperature of more than 260 ℃, and can ensure the insulation, heat resistance and good working performance of the lead by coating the Teflon outside the lead. The high temperature resistance of the silica gel can reach more than 200 ℃, and a thermal shrinkage insulating sleeve is arranged, so that the insulating and high temperature resistance of the lead 116 is guaranteed.
In this embodiment, the thermistor 111 and the lead 116 of the temperature sensor 110 are protected by triple insulation and heat resistance, so that stable and effective temperature sensing and control of the temperature sensor can be realized at a high temperature of 350 ℃. When the temperature sensor 110 is used for sensing temperature on an induction cooker, effective temperature measurement can be realized when dry burning occurs, and safety accidents are prevented.
Example two:
in the temperature sensor shown in fig. 2-3, the insulating package 113 in this embodiment is a ceramic tube penetrating up and down; the vertical distance between the top of the thermistor 111 and the top of the insulating package 113 is h, which is greater than or equal to 1 mm. In order to reduce the manufacturing cost, the insulating packaging body 113 is a ceramic tube which is vertically communicated, the thermistor 111 is packaged in a tube cavity of the ceramic tube, and in order to realize safe and effective high temperature resistance and insulating sealing, a distance of at least 1mm is set between the vertical distance between the top of the thermistor 111 and the top of the insulating packaging body 113, so that sufficient filling and sealing can be carried out by the second sealing adhesive layer, and the problem that the sealing effect is poor due to the fact that the thermistor 111 is directly contacted with the lower surface of the top of the metal heat conduction shell 115 directly or the second sealing adhesive layer is too thin is solved.
Example three:
as shown in fig. 1-5, the induction cooker comprises the temperature sensor 110, a housing 100, a spring support 120, and a panel 200 covering the upper part of the housing; the coil panel 130 is disposed in the casing 100, and the middle of the panel 200 is provided with a through hole 210; a tray hole 131 corresponding to the through hole 210 is formed in the middle of the coil tray 130; the upper part of the spring support base 120 supports the temperature sensor 110 so that the metal heat-conducting shell 115 passes through the tray frame hole 131 and can extend and contract up and down relative to the through hole 210; the bottom of the spring support base 120 is fixed to the coil disk 130.
When the induction cooker is in a dry-burning state, the temperature of the induction cooker can reach 300 ℃ or even higher, the temperature resistance value of a commonly packaged temperature sensor cannot reach 300 ℃, and the induction cooker is in a failure state; the temperature sensing using the temperature sensor 110 does not have such a problem. And the temperature sensor 110 is supported by the upper part of the spring support base 120, so that the metal heat conduction shell 115 passes through the disk frame hole and can extend and contract up and down relative to the through hole 210 on the panel 200; thereby realized temperature sensor monitoring panel pan's temperature, the bottom of spring support seat is fixed on the coil panel, has realized temperature sensor's stable fixed.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing has been a detailed description of the preferred embodiments and principles of the present invention, and it will be apparent to those skilled in the art that variations may be made in the specific embodiments based on the concepts of the present invention, and such variations are considered as within the scope of the present invention.
Claims (10)
1. A temperature sensor comprises a thermistor and a metal heat-conducting shell with an open cavity, wherein the thermistor is arranged in the metal heat-conducting shell through the open cavity and is provided with a lead wire extending out of the metal heat-conducting shell from the open cavity; the thermistor is characterized in that an insulating packaging body is arranged between the thermistor and the metal heat conduction shell; the thermistor is sealed in the insulating packaging body by a first insulating glue layer; the insulating packaging body is sealed in the metal heat conduction shell through a second insulating glue layer; the long-term temperature resistance value of the insulating packaging body is more than 350 ℃.
2. The temperature sensor of claim 1, wherein the material of the insulating package is ceramic.
3. The temperature sensor of claim 1, wherein the first layer of insulating glue is a ceramic glue; the second insulating glue layer is ceramic glue.
4. The temperature sensor according to claim 1, wherein a surface of the thermistor is further coated with an insulating resin layer.
5. The temperature sensor of claim 2, wherein the insulating package is a ceramic tube that passes through the top and bottom.
6. The temperature sensor according to claim 5, wherein a vertical distance between a top of the thermistor and a top of the insulating package is h, h ≧ 1 mm.
7. The temperature sensor according to claim 1, wherein a heat-shrinkable insulating sleeve is provided on a surface of the lead, and a first insulating layer and a second insulating layer are sequentially provided between the lead and the heat-shrinkable insulating sleeve.
8. The temperature sensor of claim 7, wherein the material of the first insulating layer is teflon.
9. An induction hob, characterized in, that it comprises a temperature sensor according to any one of the claims 1-8.
10. The induction cooker according to claim 9, further comprising a housing, a spring support and a panel covering an upper portion of said housing; a coil panel is arranged in the shell, and a through hole is formed in the middle of the panel; the middle part of the coil panel is provided with a panel frame hole corresponding to the through hole; the upper part of the spring supporting seat supports the temperature sensor, so that the metal heat conduction shell penetrates through the disc frame hole and can stretch up and down relative to the through hole; the bottom of the spring supporting seat is fixed on the coil panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020321385.2U CN211783947U (en) | 2020-03-16 | 2020-03-16 | Temperature sensor and have its electromagnetism stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020321385.2U CN211783947U (en) | 2020-03-16 | 2020-03-16 | Temperature sensor and have its electromagnetism stove |
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| Publication Number | Publication Date |
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| CN211783947U true CN211783947U (en) | 2020-10-27 |
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| CN202020321385.2U Active CN211783947U (en) | 2020-03-16 | 2020-03-16 | Temperature sensor and have its electromagnetism stove |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117232675A (en) * | 2023-11-13 | 2023-12-15 | 深圳市泰士特科技股份有限公司 | Generator stator temperature sensor and processing method thereof |
-
2020
- 2020-03-16 CN CN202020321385.2U patent/CN211783947U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117232675A (en) * | 2023-11-13 | 2023-12-15 | 深圳市泰士特科技股份有限公司 | Generator stator temperature sensor and processing method thereof |
| CN117232675B (en) * | 2023-11-13 | 2024-03-12 | 深圳市泰士特科技股份有限公司 | Generator stator temperature sensor and processing method thereof |
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