CN212513383U - Self-contact heating furnace center temperature sensor - Google Patents
Self-contact heating furnace center temperature sensor Download PDFInfo
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- CN212513383U CN212513383U CN202021264218.5U CN202021264218U CN212513383U CN 212513383 U CN212513383 U CN 212513383U CN 202021264218 U CN202021264218 U CN 202021264218U CN 212513383 U CN212513383 U CN 212513383U
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- temperature sensor
- thermistor
- heating furnace
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- elastic rubber
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Abstract
The utility model provides a from contact heating furnace center temperature sensor belongs to sensor technical field. The problem that the accuracy of a temperature sensor for an existing heating furnace is poor is solved. The self-contact heating furnace center temperature sensor is characterized in that the inner surface of the metal sheet is provided with an insulating heat-conducting rubber mat, the inner support is provided with an elastic rubber mat, the thermistor is connected onto the elastic rubber mat, and the thermistor is located between the insulating heat-conducting rubber mat and the elastic rubber mat. The elastic rubber pad is additionally arranged on the lower portion of the thermistor, the thermistor is ensured to be in full contact with the metal sheet by means of elasticity of the rubber pad, influences caused by factors such as dimensional tolerance are compensated, heat energy is directly transmitted to the thermistor through the metal sheet, accordingly, temperature detection response time deviation of the sensor is small, design requirements are met, and temperature measurement precision is high.
Description
Technical Field
The utility model belongs to the technical field of the sensor, a temperature sensor, especially a from contact heating furnace center temperature sensor is related to.
Background
At present, central temperature sensors such as induction cookers and rice cookers on the market generally sleeve an internal thermistor with a high-temperature-resistant heat-conducting sleeve or place an insulating heat-conducting rubber mat on the thermistor, then coat some heat-conducting silicone grease, directly contact a metal sheet with the heat-conducting silicone grease, transmit the temperature to the sleeve or the rubber mat through the heat-conducting silicone grease, and then transmit the temperature to the thermistor through the sleeve or the rubber mat. The distance between the thermistor and the metal sheet is due to the dimensional tolerance of the component metal sheet, the thermistor, the sleeve or the rubber mat, the filling amount of the heat-conducting silicone grease is difficult to ensure to be consistent, more or less, the factors easily cause the temperature detection response time deviation of the sensor to be larger, and the temperature measurement is not accurate. In addition, most of sensors on the market are not provided with a waterproof structure, water on the surface of the furnace easily enters the machine, and certain potential safety hazards are caused to the use of products.
Disclosure of Invention
The utility model aims at having the above-mentioned problem to current technique, provided a from contact heating furnace central temperature sensor, the temperature measurement precision that the problem was improved the sensor is carried to its technique that will solve.
The purpose of the utility model can be realized by the following technical proposal: a self-contact heating furnace center temperature sensor comprises a shell, a metal sheet, a thermistor and an inner support, wherein the metal sheet is arranged on the shell, the thermistor is arranged on the inner support, and the shell is connected with the inner support.
In the self-contact heating furnace central temperature sensor, the inner support is provided with a positioning hole, and the elastic rubber pad is embedded in the positioning hole.
In the self-contact heating furnace central temperature sensor, the elastic rubber pad comprises two threading holes, and two thread feet of the thermistor are connected to the inner support after respectively passing through one threading hole.
In the self-contact heating furnace central temperature sensor, the hole wall of the positioning hole is coated with heat-conducting grease.
In the self-contact heating furnace central temperature sensor, the thermistor is sleeved with the heat-conducting sleeve, and the thermistor and the heat-conducting sleeve are bent into a U shape together.
In the self-contact heating furnace central temperature sensor, the heat-conducting sleeve is abutted against the top surface of the elastic rubber mat, and the outer wall of the heat-conducting sleeve or the top surface of the elastic rubber mat is coated with heat-conducting grease.
In the self-contact heating furnace central temperature sensor, a waterproof ring is arranged between the shell and the metal sheet, and the waterproof ring is sleeved on the metal sheet.
In the above-mentioned self-contact heating furnace center temperature sensor, the metal piece includes a terminal pin connected to the inner frame.
In the above-mentioned self-contact heating furnace center temperature sensor, the inner support includes a plurality of buckles, and the outer shell includes a plurality of buckling positions adapted to the buckles.
In the above-mentioned self-contact heating furnace center temperature sensor, the housing has a through hole, the metal sheet is inserted in the through hole, and the top surface of the metal sheet is higher than or equal to the top surface of the housing.
Compared with the prior art, the utility model has the advantages of it is following:
1. the temperature sensor is additionally provided with the elastic rubber pad at the lower part of the thermistor, the elastic force of the rubber pad is utilized to ensure that the thermistor (comprising a heat-conducting sleeve or the rubber pad) is fully contacted with the metal sheet, the influence of factors such as dimensional tolerance and the like is compensated, and heat energy is directly transmitted to the sleeve rubber pad and the thermistor through the metal sheet, so that the temperature detection response time deviation of the sensor is smaller, the design requirement is met, and the temperature measurement precision is high;
2. the temperature sensor adopts the waterproof ring for sealing between the metal sheet and the shell, thereby thoroughly solving the problem of water leakage, being simpler than the traditional glue sealing mode, having reliable quality, being maintainable and low production cost.
Drawings
Fig. 1 is an exploded view of the present invention.
In the figure, 1, a housing; 2. a metal sheet; 3. a thermistor; 4. an inner support; 5. an insulating and heat-conducting rubber pad; 6. an elastic rubber pad; 7. positioning holes; 8. threading holes; 9. a wire leg; 10. a heat conducting sleeve; 11. a waterproof ring; 12. buckling; 13. buckling; 14. and a through hole.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
Referring to fig. 1, the present embodiment is a central temperature sensor of a self-contact heating furnace, including a housing 1, a metal sheet 2, an insulating and heat-conducting rubber pad 5, a thermistor 3, an elastic rubber pad 6, and an inner support 4, where the housing 1 has a through hole 14, the metal sheet 2 is inserted into the through hole 14, and the top surface of the metal sheet 2 is higher than or equal to the top surface of the housing 1, and the metal sheet 2 includes a connection pin 9 connected with the inner support 4; the inner support 4 comprises a plurality of buckles 12, the outer shell 1 comprises a plurality of buckle positions 13, and the outer shell 1 and the inner support 4 are buckled through the buckle structures; the insulating heat-conducting rubber mat 5 is attached to the inner surface of the metal sheet 2, the inner support 4 is provided with an elastic rubber mat 6, the thermistor 3 is connected to the elastic rubber mat 6, and the thermistor 3 is located between the insulating heat-conducting rubber mat 5 and the elastic rubber mat 6.
Further preferably, the top of inner support 4 has locating hole 7, and elastic rubber cushion 6 inlays and establishes in locating hole 7, and elastic rubber cushion 6 includes two through wires holes 8 that run through the type, and the 3 overcoat of thermistor is equipped with heat conduction sleeve 10, and thermistor 3 and heat conduction sleeve 10 bend into the U style of calligraphy jointly, and connect on inner support 4 after respectively passing through a through wires hole 8 for two stitch 9 of thermistor 3.
Further preferably, the wall of the positioning hole 7 is coated with heat-conducting silicone grease.
It is further preferable that the heat conducting sleeve 10 is abutted on the top surface of the elastic rubber pad 6, and the outer wall of the heat conducting sleeve 10 or the top surface of the elastic rubber pad 6 is coated with heat conducting silicone grease.
Further preferably, a waterproof ring 11 is arranged between the shell 1 and the metal sheet 2, the waterproof ring 11 is sleeved on the metal sheet 2, and the metal sheet 2 and the shell 1 are sealed by the waterproof ring, so that the water leakage problem is thoroughly solved, the mode of sealing the metal sheet 2 and the shell 1 by glue is simpler than that of the traditional glue sealing mode, the quality is reliable, the maintenance is possible, and the production cost is low.
The temperature measuring principle of the sensor is as follows: the heated pan bottom is in direct contact with the metal sheet 2, so that heat energy is transferred to the metal sheet 2; the metal sheet 2 transmits the temperature to the heat conduction sleeve 10 or the elastic rubber cushion 6, the heat conduction sleeve 10 or the elastic rubber cushion 6 transmits the heat energy to the thermistor 3, the purpose of coating heat conduction silicone grease is to increase the heat conduction coefficient, the resistance value of the thermistor 3 changes along with the temperature change, the changed response time can be in a certain range, and according to the change rule of the resistance value and the response time of the resistor, the working condition of the machine is controlled through software, various cooking or cooking requirements desired by people are obtained, the temperature measurement principle is the prior art, the structure of the sensor is optimized by arranging the elastic rubber cushion 6, the temperature detection response time deviation of the sensor is small, the design requirements are met, and the temperature measurement precision is high.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (10)
1. The utility model provides a from contact heating furnace center temperature sensor, includes shell (1), sheetmetal (2), thermistor (3) and inner support (4), sheetmetal (2) set up on shell (1), thermistor (3) set up on inner support (4), shell (1) is connected with inner support (4), its characterized in that, the internal surface of sheetmetal (2) is provided with insulating heat conduction cushion (5), inner support (4) are provided with elastic rubber pad (6), thermistor (3) are connected on elastic rubber pad (6), and thermistor (3) are located between insulating heat conduction cushion (5) and elastic rubber pad (6).
2. The self-contact heating furnace center temperature sensor according to claim 1, wherein the inner support (4) has a positioning hole (7), and the elastic rubber pad (6) is embedded in the positioning hole (7).
3. The center temperature sensor of the self-contact heating furnace according to claim 2, wherein the elastic rubber pad (6) comprises two threading holes (8), and two threading pins (9) of the thermistor (3) are respectively connected to the inner support (4) after passing through one threading hole (8).
4. The self-contact heating furnace center temperature sensor according to claim 2 or 3, wherein a hole wall of the positioning hole (7) is coated with heat conductive grease.
5. The self-contact heating furnace central temperature sensor according to claim 1, 2 or 3, wherein the thermistor (3) is sleeved with a heat-conducting sleeve (10), and the thermistor (3) and the heat-conducting sleeve (10) are jointly bent into a U shape.
6. The self-contact heating furnace center temperature sensor according to claim 5, wherein the heat conducting sleeve (10) abuts against the top surface of the elastic rubber pad (6), and the outer wall of the heat conducting sleeve (10) or the top surface of the elastic rubber pad (6) is coated with heat conducting grease.
7. A self-contact heating furnace central temperature sensor according to claim 1, 2 or 3, characterized in that a waterproof ring (11) is arranged between the housing (1) and the metal sheet (2), and the waterproof ring (11) is sleeved on the metal sheet (2).
8. A self-contact furnace core temperature sensor according to claim 1, 2 or 3, characterized in that the metal sheet (2) comprises terminal pins (9) connected to the inner support (4).
9. A self-contact furnace core temperature sensor according to claim 1, 2 or 3, wherein the inner support (4) comprises a plurality of snap-fit fasteners (12) and the outer shell (1) comprises a plurality of snap-fit locations (13) adapted to the snap-fit fasteners (12).
10. The self-contact heating furnace center temperature sensor according to claim 1, 2 or 3, wherein the housing (1) has a through hole (14), the metal sheet (2) is inserted in the through hole (14), and the top surface of the metal sheet (2) is higher than or equal to the top surface of the housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021264218.5U CN212513383U (en) | 2020-07-01 | 2020-07-01 | Self-contact heating furnace center temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021264218.5U CN212513383U (en) | 2020-07-01 | 2020-07-01 | Self-contact heating furnace center temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212513383U true CN212513383U (en) | 2021-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021264218.5U Active CN212513383U (en) | 2020-07-01 | 2020-07-01 | Self-contact heating furnace center temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212513383U (en) |
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2020
- 2020-07-01 CN CN202021264218.5U patent/CN212513383U/en active Active
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