Coupler temperature measuring structure of thick film type baking tray

Abstract

A coupler temperature measuring structure of a thick film type baking tray comprises a coupling seat assembly, a weak current coupling piece and a plurality of thermocouples, weak current connecting ends are arranged on the thermocouples, a temperature measuring cavity is formed in the coupling seat assembly, a temperature measuring part is arranged at the upper ends of the weak current connecting ends and located on the temperature measuring cavity, and the lower ends of the weak current connecting ends are connected with the weak current coupling piece. The temperature measuring cavity is filled with heat-conducting glue and provided with a temperature measuring element used for detecting the temperature of the heat-conducting glue, the temperature measuring element is electrically connected with the weak current connecting end, and the temperature measuring part and the temperature measuring element are embedded in the heat-conducting glue. According to the coupler temperature measuring structure of the thick film type baking tray, the temperature of the heat-conducting glue is measured through the temperature measuring element, then the temperature of the temperature measuring part is measured, the temperature of the weak current connecting end of the thermocouple is obtained, the temperature value measured by the temperature measuring element and the temperature difference value are added, and finally the temperature value of the heating tray is obtained. Therefore, the accuracy of temperature measurement can be greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of baking pan technology, and in particular to a coupler temperature measurement structure for a thick film baking pan. Background Technology

[0002] Chinese Patent Document No. CN119655632A disclosed a thick-film baking pan on March 21, 2025, including a base assembly and a heating plate assembly. A coupling assembly is provided between the base assembly and the heating plate assembly, and the base assembly and the heating plate assembly are coupled together through the coupling assembly. The coupling assembly is provided with a low-voltage coupler and several thermocouples. The low-voltage coupler is connected to the low-voltage connection end of each thermocouple, and the high-voltage connection end of the thermocouple is connected to the heating plate assembly. The low-voltage coupler is provided with a temperature measuring element for measuring the temperature of the low-voltage connection end of the thermocouple. The coupling assembly includes an upper coupling seat provided at the bottom of the heating plate assembly and a lower coupling seat provided on the base assembly, and the upper coupling seat and the lower coupling seat are coupled together. The thick-film baking pan measures the temperature of the thermocouple's weak electrical connection end through a temperature sensing element. The temperature value measured by the temperature sensing element and the temperature difference value are added together to obtain the heating pan temperature value. The temperature sensing element is located below the thermocouple's weak electrical connection end, and measures the temperature at the lower end of the weak electrical connection end. However, the lower end of the weak electrical connection end is far from the heating pan, resulting in inaccurate temperature measurement.

[0003] Therefore, further improvements are necessary. Utility Model Content

[0004] The purpose of this invention is to provide a coupler temperature measurement structure for a thick-film baking pan that is simple in structure, accurate in temperature measurement, has good cooking effect, good user experience, and strong practicality, so as to overcome the shortcomings of the prior art.

[0005] A coupler temperature measurement structure for a thick-film baking pan designed for this purpose includes a coupling base assembly, a low-voltage coupling element, and several thermocouples. The thermocouples are provided with low-voltage connection terminals. The key feature is that the coupling base assembly is provided with a temperature measuring cavity, a temperature measuring part is provided at the upper end of the low-voltage connection terminal, the temperature measuring part is located on the temperature measuring cavity, the lower end of the low-voltage connection terminal is connected to the low-voltage coupling element, the temperature measuring cavity is filled with thermally conductive adhesive, a temperature measuring element for detecting the temperature of the thermally conductive adhesive is provided on the temperature measuring cavity, the temperature measuring element is electrically connected to the low-voltage connection terminal, and the temperature measuring part and the temperature measuring element are embedded in the thermally conductive adhesive.

[0006] Thermally conductive adhesive is used to seal and cover the temperature measuring section and temperature measuring element.

[0007] The thermocouple is equipped with a high-voltage connection terminal, which is connected to a heating plate located above the temperature measuring cavity.

[0008] The coupling seat assembly includes an upper coupling seat and a lower coupling seat that are coupled to each other. The upper coupling seat is located at the bottom of the heating plate, and the temperature measuring cavity is located on the upper coupling seat.

[0009] The temperature sensing elements are located between each temperature sensing section, and the temperature sensing elements are set close to the temperature sensing section.

[0010] The temperature sensing element is an NTC temperature sensor.

[0011] The low-voltage coupling device is equipped with several low-voltage connectors, each corresponding to a thermocouple, and the low-voltage connectors are electrically connected to the low-voltage connection terminals of the thermocouples.

[0012] An upper coupling element is provided on the upper coupling base, and a lower coupling element is provided on the lower coupling base. The upper coupling element and the lower coupling element are coupled to each other.

[0013] It also includes a control circuit board, which is electrically connected to a low-voltage coupling component.

[0014] Temperature measuring chambers are respectively set on both sides of the upper coupling component, and several mounting holes are provided at the bottom of the temperature measuring chambers. The low-voltage connection terminal is installed on the mounting holes.

[0015] The coupler temperature measurement structure of this utility model for a thick-film baking pan features a temperature measuring cavity on the coupling seat assembly, filled with thermally conductive adhesive. A temperature measuring element is mounted on the cavity, and the measuring part and element are embedded in the adhesive. The temperature of the adhesive is measured by the element, leading to the temperature of the measuring part and thus the temperature of the thermocouple's weak current connection. The temperature value measured by the element and the temperature difference are added together to obtain the final heating pan temperature. Because the measuring part is located above the weak current connection and close to the heating pan, the accuracy of the temperature measurement is greatly improved. Furthermore, the contact temperature measurement using the thermally conductive adhesive further enhances the accuracy. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the coupler in one embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the overall structure of the coupler in one embodiment of the present invention.

[0018] Figure 3 This is an exploded view of the coupler in one embodiment of the present invention.

[0019] Figure 4 This is an exploded structural diagram of the coupler from another position in one embodiment of the present invention.

[0020] Figure 5 This is an exploded structural diagram of the upper coupling seat and the low-voltage connection terminal in one embodiment of the present invention.

[0021] Figure 6 This is a schematic diagram of the internal structure of the base in one embodiment of the present invention.

[0022] Figure 7 This is a schematic diagram of the overall structure of the baking pan in one embodiment of the present invention.

[0023] Figure 8 This is a schematic diagram of the assembly structure of the heating plate and thermocouple in one embodiment of the present invention. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] See Figures 1-8 The coupler temperature measurement structure of this thick-film baking pan includes a coupling base assembly 1, a low-voltage coupling element 2, and several thermocouples 3. Each thermocouple 3 has a low-voltage connection end 4. The coupling base assembly 1 has a temperature measuring cavity 5. A temperature measuring part 6 is located at the upper end of the low-voltage connection end 4, situated on the temperature measuring cavity 5. The lower end of the low-voltage connection end 4 is connected to the low-voltage coupling element 2. The temperature measuring cavity 5 is filled with thermally conductive adhesive 8. A temperature measuring element 7 for detecting the temperature of the thermally conductive adhesive 8 is located on the temperature measuring cavity 5. The temperature measuring element 7 is electrically connected to the low-voltage connection end 4. The temperature measuring part 6 and the temperature measuring element 7 are embedded in the thermally conductive adhesive 8, thus fixing the temperature measuring element 7. The thermally conductive adhesive 8 can transfer heat from the temperature measuring part 6 to the temperature measuring element 7, thereby measuring the temperature of the thermally conductive adhesive 8 through the temperature measuring element 7, and thus determining the temperature of the temperature measuring part 6, which in turn determines the temperature of the low-voltage connection end 4.

[0026] Thermally conductive adhesive 8 seals and covers the temperature measuring part 6 and the temperature measuring element 7. The thermally conductive adhesive 8 can seal the temperature measuring cavity 5 to prevent moisture and impurities from entering the temperature measuring cavity 5 and affecting the accuracy of temperature measurement, while also improving the service life of the temperature measuring element 7.

[0027] The thermocouple 3 is provided with a high-voltage connection terminal 10, which is connected to the bottom of the heating plate 9. The heating plate 9 is located above the temperature measuring cavity 5, that is, the heating plate 9 is located above the temperature measuring part 6 and is relatively close to the temperature measuring part 6.

[0028] When there is a temperature difference between the measuring junction (hot junction) and the reference junction (cold junction) of thermocouple 3, an electromotive force (voltage) will be generated between the two different metals. This electromotive force is proportional to the temperature difference of the junction, forming a measurable voltage signal. The temperature difference between the hot junction and the cold junction can be deduced from the voltage signal. The temperature sensing element 7 can measure the actual temperature of the cold junction of the thermocouple (i.e., the weak current connection terminal 4). By combining the temperature difference between the hot junction and the cold junction deduced from the voltage signal, the temperature value measured by the temperature sensing element 7 and the temperature difference value can be added together to obtain the accurate temperature value of the heating plate 9, that is, the temperature value of the hot junction of thermocouple 3. The hot junction of thermocouple 3 is the strong current connection terminal 10.

[0029] The coupling seat assembly 1 includes an upper coupling seat 11 and a lower coupling seat 12 that are coupled to each other. The upper coupling seat 11 is disposed at the bottom of the heating plate 9, and the temperature measuring cavity 5 is disposed on the upper coupling seat 11, so that the temperature measuring part 6 is disposed close to the heating plate 9.

[0030] The temperature sensing element 7 is located between each temperature sensing part 6, and the temperature sensing element 7 is set close to the temperature sensing part 6, so that one temperature sensing part 6 can accurately measure the temperature of the weak electrical connection terminal 4 of multiple thermocouples 3, which can reduce manufacturing costs.

[0031] The temperature sensing element 7 is an NTC temperature sensor, and the external wires of the NTC temperature sensor are connected to two of the low-voltage connection terminals 4.

[0032] The weak current coupling component 2 is provided with several weak current connectors 13, each of which corresponds to a thermocouple 3. The weak current connector 13 is electrically connected to the weak current connection end 4 of the thermocouple 3. The weak current connector 13 is a weak current contact spring pin. The weak current coupling component 2 is fixed on the lower coupling seat 12.

[0033] An upper coupling element 14 is provided on the upper coupling seat 11, and a lower coupling element 15 is provided on the lower coupling seat 12. The upper coupling element 14 and the lower coupling element 15 are coupled to each other.

[0034] The upper coupling member 14 is provided with a high-voltage pin 18, and the lower coupling member 15 is provided with a high-voltage socket 19. The high-voltage pin 18 and the high-voltage socket 19 are connected to each other to form a conductive contact.

[0035] It also includes a control circuit board 16, which is electrically connected to the low-voltage coupling component 2 and the lower coupling component 15 respectively. The temperature value measured by the temperature sensing element 7 is fed back to the control circuit board 16, and the temperature difference value measured by the thermocouple 3 is fed back to the control circuit board 16. The control circuit board 16 calculates the temperature of the heating plate 9 based on the measured temperature value and the temperature difference value.

[0036] Temperature measuring chambers 5 are respectively set on both sides of the upper coupling member 14. Several mounting holes 17 are provided at the bottom of the temperature measuring chambers 5, and the weak current connection end 4 is installed on the mounting holes 17. The weak current coupling members 2 are respectively set on both sides of the lower coupling seat 12. Therefore, two sets of thermocouples 3 are set, with 2 thermocouples set horizontally and 2 thermocouples set vertically in each set, for a total of 8 thermocouples 3.

[0037] A thick film heating component 20 is provided at the bottom of the heating plate 9. The upper coupling component 14 is electrically connected to the thick film heating component 20 through the (high voltage) electrode 21 to supply power to the thick film heating component 15. The thick film heating component 20 is used to heat the heating plate 9. The thick film heating component 20 is a thick film heating plate.

[0038] The high-voltage connection terminal 10 of thermocouple 3 is connected to the terminal at the bottom of heating plate 9 or the terminal of thick film heating component 20.

[0039] The thick-film baking pan includes a heating plate 9 and a base 22. A lower coupling seat 12 is disposed on the base 22. The heating plate 9 and the base 22 are coupled together through the coupling seat assembly 1. The control circuit board 16 is disposed inside the base 22.

[0040] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A coupler temperature measurement structure for a thick-film baking pan, comprising a coupling base assembly (1), a low-voltage coupling element (2), and several thermocouples (3), wherein the thermocouples (3) are provided with low-voltage connection terminals (4), characterized in that: A temperature measuring cavity (5) is provided on the coupling seat assembly (1), and a temperature measuring part (6) is provided on the upper end of the weak current connection terminal (4). The temperature measuring part (6) is located on the temperature measuring cavity (5). The lower end of the weak current connection terminal (4) is connected to the weak current coupling component (2). The temperature measuring cavity (5) is filled with thermally conductive adhesive (8). A temperature measuring element (7) for detecting the temperature of the thermally conductive adhesive (8) is provided on the temperature measuring cavity (5). The temperature measuring element (7) is electrically connected to the weak current connection terminal (4). The temperature measuring part (6) and the temperature measuring element (7) are embedded in the thermally conductive adhesive (8).

2. The coupler temperature measurement structure for the thick-film baking pan according to claim 1, characterized in that: Thermally conductive adhesive (8) seals and covers the temperature measuring part (6) and the temperature measuring element (7).

3. The coupler temperature measurement structure for the thick-film baking pan according to claim 1, characterized in that: The thermocouple (3) is provided with a high-voltage connection end (10), which is connected to the heating plate (9). The heating plate (9) is located above the temperature measuring cavity (5).

4. The coupler temperature measurement structure for the thick-film baking pan according to claim 3, characterized in that: The coupling seat assembly (1) includes an upper coupling seat (11) and a lower coupling seat (12) that are coupled to each other. The upper coupling seat (11) is located at the bottom of the heating plate (9), and the temperature measuring cavity (5) is located on the upper coupling seat (11).

5. The coupler temperature measurement structure for the thick-film baking pan according to claim 1, characterized in that: The temperature measuring element (7) is located between each temperature measuring part (6), and the temperature measuring element (7) is set close to the temperature measuring part (6).

6. The coupler temperature measurement structure for the thick-film baking pan according to claim 1, characterized in that: The temperature sensing element (7) is an NTC temperature sensor.

7. The coupler temperature measurement structure for the thick-film baking pan according to claim 1, characterized in that: The weak current coupling component (2) is provided with several weak current connectors (13), and the weak current connectors (13) correspond one-to-one with the thermocouples (3). The weak current connectors (13) are electrically connected to the weak current connection end (4) of the thermocouples (3).

8. The coupler temperature measurement structure for a thick-film baking pan according to claim 4, characterized in that: An upper coupling element (14) is provided on the upper coupling seat (11), and a lower coupling element (15) is provided on the lower coupling seat (12). The upper coupling element (14) and the lower coupling element (15) are coupled to each other.

9. The coupler temperature measurement structure for a thick-film baking pan according to claim 1, characterized in that: It also includes a control circuit board (16), which is electrically connected to a low-voltage coupling element (2).

10. The coupler temperature measurement structure for the thick-film baking pan according to claim 8, characterized in that: Temperature measuring chambers (5) are respectively set on both sides of the upper coupling member (14). Several mounting holes (17) are provided at the bottom of the temperature measuring chambers (5), and the weak current connection terminal (4) is installed on the mounting holes (17).

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