CN210129966U - Thick film heater - Google Patents
Thick film heater Download PDFInfo
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- CN210129966U CN210129966U CN201921049553.0U CN201921049553U CN210129966U CN 210129966 U CN210129966 U CN 210129966U CN 201921049553 U CN201921049553 U CN 201921049553U CN 210129966 U CN210129966 U CN 210129966U
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- thick film
- heating member
- temperature measuring
- measuring device
- film heating
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Abstract
The utility model relates to a thick film heater, including heat conduction base plate and the thick film heating member of setting at its upper surface, the upper surface of thick film heating member is equipped with the temperature measurement conducting layer, and the electricity is connected with heating member temperature measuring device on the temperature measurement conducting layer, and heating member temperature measuring device's temperature sensing face supports and leans on the upper surface at the thick film heating member. The utility model discloses a heating member temperature measuring device directly detects the thick film heating member, the operating temperature of real-time detection thick film heating member, and the power supply that can the automatic cutout thick film heating member when the operating temperature of thick film heating member is too high prevents to last work under the thick film heating member overtemperature condition, avoids taking place to burst, catch fire etc. accident.
Description
Technical Field
The utility model relates to a water heating equipment field specifically is a thick film heater.
Background
Chinese patent document No. CN 206522912U discloses a rivet-assembled thick-film type water heating plate, which comprises a base plate, a cover plate covering the base plate, and a thick-film heating body disposed on the cover plate, wherein a plurality of first mounting holes are disposed around the base plate, a plurality of second mounting holes matched with the first mounting holes are disposed on the cover plate, and the matched first mounting holes and second mounting holes are fixed by rivets, so that the cover plate and the base plate are covered and fixed.
This kind of thick membrane type water heating plate still is equipped with the temperature sensor that is used for detecting thick film heating member operating temperature, and the temperature sensor is through the operating temperature who detects the apron to judge whether thick membrane type water heating plate is in normal operating condition, if thick membrane type water heating plate is very during operation (like dry combustion method), the operating temperature of apron can change up unusually, and when the temperature was higher than a definite value, the power supply of thick film heating member was disconnected in sudden jump to the temperature sensor, prevented that the thick film heating member overtemperature and take place to burst, accident such as catching fire.
Accidents such as bursting, catching fire easily take place when the operating temperature of thick film heating body is too high, however, traditional temperature sensor is not the operating temperature of direct induction thick film heating body, and consequently, its temperature detects and has certain hysteresis quality, if thick film type water heating dish normally works (under the non-dry combustion state), whether the operating temperature of thick film heating body is too high can not directly be judged even to the temperature sensor, consequently, needs further improvement.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the not enough of above-mentioned prior art existence, and provide a thick film heater, its temperature that can the direct detection thick film heating member prevents thick film heating member overtemperature duty.
The purpose of the utility model is realized like this:
the utility model provides a thick film heater, includes heat conduction base plate and sets up the thick film heating member at its upper surface, the upper surface of thick film heating member is equipped with the temperature measurement conducting layer, and the electricity is connected with heating member temperature measuring device on the temperature measurement conducting layer, and heating member temperature measuring device's temperature sensing face supports and leans on the upper surface of thick film heating member.
The thick film heating body comprises a first insulating layer, a heating body conducting layer, a thick film resistor layer and a second insulating layer which are arranged layer by layer from bottom to top, the first insulating layer is arranged on the upper surface of the heat conducting substrate, and the temperature measuring conducting layer is arranged on the upper surface of the second insulating layer.
And the temperature sensing surface of the heating body temperature measuring device is abutted against the upper surface of the second insulating layer.
The temperature measuring conducting layer is electrically connected with a contact pin of the heating body temperature measuring device through welding.
And a third insulating layer is further arranged on the surface of the temperature measuring conducting layer and/or the surface of the heating body temperature measuring device.
And the temperature sensing surface of the heating body temperature measuring device is abutted against the upper surface of the middle part of the thick film heating body.
The heating body temperature measuring device is an NTC temperature measuring device.
The utility model has the advantages as follows:
the heating member temperature measuring device directly detects the thick film heating member, detects the operating temperature of the thick film heating member in real time, can automatically cut off the power supply of the thick film heating member when the operating temperature of the thick film heating member is too high, prevents the thick film heating member from continuously working under an over-temperature state, and avoids accidents such as bursting and firing.
The utility model is suitable for various water heating devices, such as a water dispenser, a coffee machine and the like, and has wide application.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
Referring to fig. 1, the thick film heater comprises a heat conducting substrate 1 and a thick film heating body 2 arranged on the upper surface of the heat conducting substrate, wherein a temperature measuring conductive layer 3 is arranged on the upper surface of the thick film heating body 2, a heating body temperature measuring device 31 is electrically connected to the temperature measuring conductive layer 3, and the temperature sensing surface of the heating body temperature measuring device 31 abuts against the upper surface of the thick film heating body 2. The utility model discloses heating member temperature measuring device 31 directly detects thick film heating member 2, and the operating temperature of real-time detection thick film heating member 2, the power supply that can automatic cutout thick film heating member 2 when the operating temperature of thick film heating member 2 is too high prevents to last work under the thick film heating member 2 overtemperature condition, avoids taking place to burst, catches fire etc. accident.
Further, the thick film heating body 2 comprises a first insulating layer 21, a heating body conducting layer 22, a thick film resistance layer 23 and a second insulating layer 24 which are arranged layer by layer from bottom to top in a printing and sintering mode, the first insulating layer 21 is arranged on the upper surface of the heat conducting substrate 1, and the temperature measuring conducting layer 3 is arranged on the upper surface of the second insulating layer 24. The insulating layer serves as an insulator and the heater conductive layer 22 and thick film resistive layer 23 form a heating circuit, as will be appreciated by those skilled in the art.
Further, the temperature sensing surface of the heating body temperature measuring device 31 abuts against the upper surface of the second insulating layer 24, and the heating body temperature measuring device 31 directly measures the temperature of the thick film heating body 2 through the insulating layer, thereby effectively avoiding the electric leakage phenomenon.
Furthermore, the temperature measuring conductive layer 3 is electrically connected with the contact pin 33 of the heating body temperature measuring device 31 by welding, which can be understood by those skilled in the art.
Furthermore, the surface of the temperature measuring conductive layer 3 and/or the surface of the heating body temperature measuring device 31 are/is also provided with a third insulating layer 32, so that the insulating effect on the temperature measuring conductive layer 3 is further improved.
Further, the temperature sensing surface of the heating body temperature measuring device 31 is abutted against the upper surface of the middle part of the thick film heating body 2, so that the temperature measurement is more accurate.
Furthermore, the heating body temperature measuring device 31 is an NTC temperature measuring device, and has the advantages of small volume, quick temperature measurement and low cost.
The foregoing is a preferred embodiment of the present invention showing and describing the basic principles, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and the scope of the invention is to be protected. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a thick film heater, includes heat conduction base plate (1) and sets up thick film heating member (2) at its upper surface, its characterized in that, the upper surface of thick film heating member (2) is equipped with temperature measurement conducting layer (3), and temperature measurement conducting layer (3) electricity is connected with heating member temperature measuring device (31), and the temperature sensing face of heating member temperature measuring device (31) supports and leans on the upper surface of thick film heating member (2).
2. The thick film heater of claim 1, wherein: the thick film heating body (2) comprises a first insulating layer (21), a heating body conducting layer (22), a thick film resistor layer (23) and a second insulating layer (24), wherein the first insulating layer (21) is arranged on the upper surface of the heat conducting substrate (1), and the temperature measuring conducting layer (3) is arranged on the upper surface of the second insulating layer (24).
3. The thick film heater of claim 2, wherein: the temperature sensing surface of the heating body temperature measuring device (31) is abutted against the upper surface of the second insulating layer (24).
4. The thick film heater of claim 1, wherein: the temperature measuring conducting layer (3) is electrically connected with a contact pin (33) of the heating body temperature measuring device (31) through welding.
5. The thick film heater of claim 1, wherein: and a third insulating layer (32) is further arranged on the surface of the temperature measuring conductive layer (3) and/or the surface of the heating body temperature measuring device (31).
6. The thick film heater of any one of claims 1-5, wherein: the temperature sensing surface of the heating body temperature measuring device (31) is abutted against the upper surface of the middle part of the thick film heating body (2).
7. The thick film heater of any one of claims 1-5, wherein: the heating body temperature measuring device (31) is an NTC temperature measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921049553.0U CN210129966U (en) | 2019-07-05 | 2019-07-05 | Thick film heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921049553.0U CN210129966U (en) | 2019-07-05 | 2019-07-05 | Thick film heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210129966U true CN210129966U (en) | 2020-03-06 |
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ID=69664805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921049553.0U Active CN210129966U (en) | 2019-07-05 | 2019-07-05 | Thick film heater |
Country Status (1)
| Country | Link |
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| CN (1) | CN210129966U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114375076A (en) * | 2020-10-19 | 2022-04-19 | 广东美的厨房电器制造有限公司 | Thick film heater, cooking device with same and control method of thick film heater |
-
2019
- 2019-07-05 CN CN201921049553.0U patent/CN210129966U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114375076A (en) * | 2020-10-19 | 2022-04-19 | 广东美的厨房电器制造有限公司 | Thick film heater, cooking device with same and control method of thick film heater |
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