Thick film type baking tray

Abstract

A thick film type baking tray comprises a base assembly and a heating tray assembly, a coupling assembly is arranged between the base assembly and the heating tray assembly, the base assembly and the heating tray assembly are in coupling connection through the coupling assembly, a weak current coupler and a plurality of thermocouples are arranged on the coupling assembly, and the weak current coupler is connected with the weak current connecting ends of the thermocouples respectively. The strong current connecting end of the thermocouple is connected with the heating disc assembly, and the weak current coupler is provided with a temperature measuring element used for measuring the temperature of the weak current connecting end of the thermocouple; the coupling assembly comprises an upper coupling seat arranged at the bottom of the heating disc assembly and a lower coupling seat arranged on the base assembly, and the upper coupling seat and the lower coupling seat are connected in a coupling mode. According to the thick film type baking tray, the coupling assembly is arranged between the base assembly and the heating tray assembly, and the base assembly and the heating tray assembly are in coupling connection through the coupling assembly, so that electric wires do not need to be arranged between the base assembly and the heating tray assembly, and the problem that wiring is inconvenient does not exist.

Description

Technical Field

[0001] The invention relates to the technical field of baking pans, in particular to a thick film type baking pan. Background Art

[0002] Chinese patent document No. CN204931428U disclosed a baking tray on January 6, 2016, in particular an electric baking tray, comprising a base, an electric heating tube and a baking tray, wherein the baking tray is mounted on the base, a power supply is provided on the base, a groove for fixing the electric heating tube is provided on the back of the baking tray, the electric heating tube is embedded in the groove, and is fixed to the groove wall, and its two ends are led out of the baking tray and electrically connected to the power supply. The electric heating tube of the electric baking pan is located on the baking pan, and the power supply is set on the base. The power supply is connected to the electric heating tube through an electric wire, but the electric heating tube and the power supply are set on different components. The wire needs to pass between the base and the baking pan, which makes wiring inconvenient; in addition, the electric baking pan generally detects the temperature of the baking pan through a thermocouple. The principle of thermocouple temperature detection is mainly based on the thermoelectric effect, that is, when two different metals are combined to form a closed loop, if the temperatures of the two end points (the hot end and the cold end of the thermocouple) are different, a certain electromotive force will be generated to form an electric current. By measuring the electromotive force in the thermocouple loop, the temperature of the measured medium (baking pan) can be inferred, but this method of measuring temperature is not accurate enough.

[0003] Therefore, further improvements are necessary. Summary of the invention

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

[0005] A thick film baking tray designed for this purpose comprises a base assembly and a heating tray assembly, and is characterized in that a coupling assembly is arranged between the base assembly and the heating tray assembly, the base assembly and the heating tray assembly are coupled and connected via the coupling assembly, a weak-electric coupler and a plurality of thermocouples are arranged on the coupling assembly, the weak-electric coupler is electrically connected to the weak-electric connection ends of each thermocouple respectively, the strong-electric connection end of the thermocouple is connected to the heating tray assembly, and a temperature measuring element for measuring the temperature of the weak-electric connection end of the thermocouple is arranged on the weak-electric coupler.

[0006] The coupling assembly comprises an upper coupling seat arranged at the bottom of the heating plate assembly and a lower coupling seat arranged on the base assembly, and the upper coupling seat and the lower coupling seat are coupled to each other.

[0007] The temperature measuring element is installed on the lower coupling seat. One temperature measuring element is arranged and located between the weak current connection ends of several thermocouples, so that the several weak current connection ends are concentrated and integrated in the same measuring interval.

[0008] The weak-current coupler is installed on the lower coupling seat. A plurality of weak-current connecting pieces are arranged on the weak-current coupler. The weak-current connecting pieces correspond to the thermocouples one by one. The weak-current connecting pieces are electrically connected to the weak-current connecting ends of the thermocouples.

[0009] The upper coupling seat is provided with a plurality of first mounting holes, and the thermocouple is mounted on the corresponding first mounting holes, and the strong electric connection end of the thermocouple is connected to the bottom of the heating plate assembly through an electric wire.

[0010] The heating plate assembly includes a heating plate, a thick film heating component and an installation base shell. The base assembly includes a first base and a second base arranged at an interval from each other. The thick film heating component is attached to the bottom of the heating plate. The installation base shell is arranged at the bottom of the heating plate. The thick film heating component is located in the installation base shell. The lower coupling seat is installed on the first base. The lower coupling seat is provided with a first installation groove. The second base is provided with a second installation groove. One end of the installation base shell is positioned and installed on the first installation groove, and the other end of the installation base shell is positioned and installed on the second installation groove.

[0011] The heating plate assembly also includes a positioning seat, which is located at the bottom of the heating plate, a first fixing hole is provided on the upper coupling seat, a second fixing hole is provided on the positioning seat, and a first fixing column hole is provided at the bottom of the heating plate. The fastener passes through the first fixing hole and the second fixing hole in sequence and is fastened to the first fixing column hole, so that the upper coupling seat is fixed to the bottom of the heating plate, the thick film heating component is pressed between the heating plate and the positioning seat, the installation bottom shell is pressed between the upper coupling seat and the positioning seat, the installation bottom shell is provided with a positioning hole, and the bottom of the positioning seat is inserted into the positioning hole.

[0012] The lower coupling seat is provided with a mounting cavity, and the upper coupling seat is positioned and mounted in the mounting cavity.

[0013] An upper coupler is arranged on the upper coupling seat, and a lower coupler is arranged on the lower coupling seat. The upper coupler and the lower coupler are coupled and connected to each other, and the upper coupler is electrically connected to the thick film heating component through electrodes; a temperature controller is arranged in the upper coupling seat, and the temperature controller is attached to the bottom of the thick film heating component.

[0014] The first base is provided with a main control board, a control board and a cooling fan, and the main control board is electrically connected to the control board, the cooling fan, the weak current coupler, the temperature measuring element and the lower coupler respectively.

[0015] The thick film baking tray of the present invention is provided with a coupling assembly between the base assembly and the heating tray assembly. The base assembly and the heating tray assembly are coupled and connected by the coupling assembly, so that there is no need to lay wires between the base assembly and the heating tray assembly, and therefore there is no problem of inconvenient wiring; in addition, a temperature measuring element for measuring the temperature of each weak current connection end is provided between the weak current connection ends of several thermocouples (i.e., the cold ends of the thermocouples). The temperature measuring element can measure the actual temperature of the cold end of the thermocouple, and combine the temperature difference between the hot end and the cold end inferred by the voltage signal, and add the temperature value measured by the temperature measuring element and the temperature difference value to obtain an accurate heating tray temperature value (i.e., the hot end temperature value of the thermocouple), so that the thermocouple temperature measurement is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 2 is a cross-sectional view of a baking tray according to an embodiment of the present invention.

[0017] Figure 2 Schematic diagram of the overall structure of a baking tray in one embodiment of the present invention.

[0018] Figure 3 It is a partial structural schematic diagram of a baking tray in one embodiment of the present invention.

[0019] Figure 4 Schematic diagram of the internal structure of the base in one embodiment of the present invention.

[0020] Figure 5 FIG. 4 is a cross-sectional view of a lower coupling seat in one embodiment of the present invention.

[0021] Figure 6 Schematic diagram of the overall structure of the lower coupling seat in one embodiment of the present invention.

[0022] Figure 7 It is a partial structural exploded view of a baking tray in one embodiment of the present invention.

[0023] Figure 8 Schematic diagram of the overall structure of a heating plate assembly in one embodiment of the present invention.

[0024] Fig. 9 Schematic diagram of the exploded structure of a heating plate assembly in one embodiment of the present invention.

[0025] Fig.10 for Figure 7 Schematic diagram of the enlarged structure at point A in the middle.

[0026] Fig.11 Schematic diagram of the exploded structure of the upper coupling seat in one embodiment of the present invention.

[0027] Fig.12 Schematic diagram of the overall structure of the upper coupling seat in one embodiment of the present invention. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] See also Figure 1-Figure 12 The thick film type baking tray comprises a base component 1 and a heating plate component 2, a coupling assembly is arranged between the base component 1 and the heating plate component 2, the base component 1 and the heating plate component 2 are coupled and connected through the coupling assembly, a weak electric coupler 3 and a plurality of thermocouples 4 are arranged on the coupling assembly, the weak electric coupler 3 is electrically connected to the weak electric connection end 5 of each thermocouple 4 respectively, the strong electric connection end 6 of the thermocouple 4 is connected to the bottom of the heating plate component 2, and a temperature measuring element 7 for measuring the temperature of the weak electric connection end 5 of the thermocouple 4 is arranged on the weak electric coupler 3; the temperature of the weak electric connection end 5 of the thermocouple 4 (that is, the cold end of the thermocouple 4) is measured by the temperature measuring element 7 to compensate for the temperature of the thermocouple 4 and realize accurate temperature measurement.

[0030] The coupling assembly includes an upper coupling seat 8 arranged at the bottom of the heating plate assembly 2 and a lower coupling seat 9 arranged on the base assembly 1. The upper coupling seat 8 and the lower coupling seat 9 are coupled to each other.

[0031] The temperature measuring element 7 is installed on the lower coupling seat 9. One temperature measuring element 7 is set and located between the weak current connection ends 5 of several thermocouples 4, so that the several weak current connection ends 5 are concentrated and integrated in the same measurement interval; one temperature measuring element 7 can detect the cold end temperature of multiple thermocouples 4, which can reduce the manufacturing cost.

[0032] When there is a temperature difference between the measuring junction (hot end) and the reference junction (cold end) of the thermocouple 4, an electromotive force (voltage) will be generated between the two different metals. This electromotive force is proportional to the temperature difference of the junction to form a measurable voltage signal, and then the temperature difference between the hot end and the cold end can be inferred through the voltage signal. The temperature of the reference junction is usually room temperature. By adding the room temperature and the temperature difference, the temperature value of the measuring junction (heating plate) can be obtained. The traditional baking tray uses this principle to detect the temperature of the heating tray. However, when the baking tray is heated, the temperature of the cold end of the thermocouple 4 will rise. Therefore, the actual temperature of the reference junction is not room temperature, resulting in the actual temperature value of the heating tray being different from the above-derived heating tray temperature value, which leads to inaccurate thermocouple temperature measurement. In this embodiment, by setting a temperature measuring element 7, the temperature measuring element 7 can measure the actual temperature of the cold end of the thermocouple, so that the accurate heating tray temperature can be obtained.

[0033] The weak-current coupler 3 is installed on the lower coupling seat 9. A plurality of weak-current connectors 10 are arranged on the weak-current coupler 3. The weak-current connectors 10 correspond to the thermocouples 4 one by one. The weak-current connectors 10 are electrically connected to the weak-current connection ends 5 of the thermocouples 4. The weak-current connectors 10 are weak-current contact spring pins. The weak-current contact spring pins are in conductive contact with the weak-current connection ends 5 of the thermocouples 4.

[0034] Two thermocouples 4 and weak-current connectors 10 are arranged horizontally and three are arranged vertically, for a total of six. The temperature measuring element 7 is arranged in the middle of the measuring interval.

[0035] The temperature measuring element 7 is located between several weak-current connectors 10. A second mounting hole 34 for mounting the temperature measuring element 7 is provided on the weak-current coupler 3. A fixing plate 35 is provided at the bottom of the temperature measuring element 7. A third fixing hole 36 is provided on the fixing plate 35. A second fixing column hole 37 is provided on the lower coupling seat 9. The screw passes through the third fixing hole 36 and is fastened to the second fixing column hole 37 to fix the temperature measuring element 7 on the lower coupling seat 9.

[0036] A plurality of first mounting holes 11 are provided on the upper coupling seat 8, and the thermocouple 4 is installed on the corresponding first mounting holes 11. The strong electrical connection end 6 of the thermocouple 4 (i.e., the hot end of the thermocouple 3) is connected to the bottom of the heating disk assembly 2 through the wire 13, that is, the strong electrical connection end 6 of the thermocouple 4 is connected to the wiring terminal at the bottom of the heating disk 14 or the wiring terminal of the thick film heating component 15 through the wire 13.

[0037] The temperature measuring element 7 is an NTC temperature sensor.

[0038] The heating plate assembly 2 includes a heating plate 14, a thick film heating component 15 and a mounting bottom shell 16. The base assembly 1 includes a first base 17 and a second base 18 which are spaced apart from each other. The thick film heating component 15 is attached to the bottom of the heating plate 14. The thick film heating component 15 is used to heat the heating plate 14. The mounting bottom shell 16 is arranged at the bottom of the heating plate 14. The thick film heating component 15 is located in the mounting bottom shell 16. The lower coupling seat 9 is installed on the first base 17. The lower coupling seat 9 is provided with a first mounting groove 12. The second base 18 is provided with a second mounting groove 19. One end of the mounting bottom shell 16 is positioned and installed on the first mounting groove 12. The other end of the mounting bottom shell 16 is positioned and installed on the second mounting groove 19, so that the entire heating plate assembly 2 is installed on the base assembly 1.

[0039] The heating plate assembly 2 also includes a positioning seat 20, which is located at the bottom of the heating plate 14, a first fixing hole 21 is provided on the upper coupling seat 8, a second fixing hole 22 is provided on the positioning seat 20, and a first fixing column hole 23 is provided at the bottom of the heating plate 14. The fastener 24 (screw) passes through the first fixing hole 21 and the second fixing hole 22 in sequence and is fastened to the first fixing column hole 23, so that the upper coupling seat 8 is fixed to the bottom of the heating plate 14, and the positioning seat 20 is also fixed. The thick film heating component 15 is pressed between the heating plate 14 and the positioning seat 20, and the mounting bottom shell 16 is pressed between the upper coupling seat 8 and the positioning seat 20. The mounting bottom shell 16 is provided with a positioning hole 25, and the bottom of the positioning seat 20 is inserted into the positioning hole 25. The positioning hole 25 is also used to avoid the electrical components in the upper coupling seat 8.

[0040] The lower coupling seat 9 is provided with a mounting cavity 26 , and the upper coupling seat 8 is positioned and mounted in the mounting cavity 26 .

[0041] An upper coupler 27 is provided on the upper coupling seat 8, and a lower coupler 28 is provided on the lower coupling seat 9. The upper coupler 27 and the lower coupler 28 are coupled and connected to each other. The upper coupler 27 is electrically connected to the thick film heating component 15 through the (strong current) electrode 29 to power the thick film heating component 15. The thick film heating component 15 is a thick film heating plate. A temperature controller 30 is provided in the upper coupling seat 8. The temperature controller 30 is attached to the bottom of the thick film heating component 15. When the temperature of the heating disk 14 exceeds the limit value, the temperature controller 30 is disconnected, thereby stopping the thick film heating component 15 from working.

[0042] A high-voltage plug pin 38 is disposed on the upper coupling seat 8, and a high-voltage plug socket 39 is disposed on the lower coupling seat 9. The high-voltage plug pin 38 and the high-voltage plug socket 39 are plugged into each other to form a conductive contact.

[0043] A main control board 31, a control board 32 and a cooling fan 33 are arranged in the first base 17. The main control board 31 is electrically connected to the control board 32, the cooling fan 33, the weak current coupler 3, the temperature measuring element 7 and the lower coupler 28 respectively; a power socket 40 for connecting a power source is arranged on one side of the first base 17, and the power socket 40 is electrically connected to the main control board 31 to supply power to various electrical components; the cooling fan 33 is used to dissipate heat for the main control board 31 and the control board 32; a control panel 41 is arranged at a position corresponding to the control board 32 at the top of the first base 17.

[0044] The above is a preferred embodiment of the present invention, which shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for illustrating the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A thick film baking tray, comprising a base assembly (1) and a heating tray assembly (2), characterized in that: A coupling assembly is provided between the base assembly (1) and the heating disk assembly (2); the base assembly (1) and the heating disk assembly (2) are coupled and connected via the coupling assembly; a weak-electric coupler (3) and a plurality of thermocouples (4) are provided on the coupling assembly; the weak-electric coupler (3) is electrically connected to the weak-electric connection ends (5) of the thermocouples (4), respectively; the strong-electric connection ends (6) of the thermocouples (4) are connected to the heating disk assembly (2); and a temperature measuring element (7) for measuring the temperature of the weak-electric connection ends (5) of the thermocouples (4) is provided on the weak-electric coupler (3).

2. The thick film baking pan according to claim 1, characterized in that: The coupling assembly comprises an upper coupling seat (8) arranged at the bottom of the heating plate assembly (2) and a lower coupling seat (9) arranged on the base assembly (1); the upper coupling seat (8) and the lower coupling seat (9) are coupled to each other.

3. The thick film baking tray according to claim 2, characterized in that: The temperature measuring element (7) is mounted on the lower coupling seat (9), and one temperature measuring element (7) is arranged between the weak current connection ends (5) of the plurality of thermocouples (4), so that the plurality of weak current connection ends (5) are centrally and integratedly arranged in the same measurement interval.

4. The thick film baking pan according to claim 3, characterized in that: The weak-current coupler (3) is mounted on the lower coupling seat (9). A plurality of weak-current connecting pieces (10) are arranged on the weak-current coupler (3). The weak-current connecting pieces (10) correspond to the thermocouples (4) one by one. The weak-current connecting pieces (10) are electrically connected to the weak-current connecting ends (5) of the thermocouples (4).

5. The thick film baking tray according to claim 4, characterized in that: A plurality of first mounting holes (11) are provided on the upper coupling seat (8), and the thermocouple (4) is mounted on the corresponding first mounting holes (11). The strong electric connection end (6) of the thermocouple (4) is connected to the bottom of the heating plate assembly (2) via an electric wire (13).

6. The thick film baking pan according to claim 2, characterized in that: The heating plate assembly (2) comprises a heating plate (14), a thick film heating component (15) and a mounting bottom shell (16); the base assembly (1) comprises a first base (17) and a second base (18) which are arranged at a distance from each other; the thick film heating component (15) is attached to the bottom of the heating plate (14); the mounting bottom shell (16) is arranged at the bottom of the heating plate (14); the thick film heating component (15) is located in the mounting bottom shell (16); the lower coupling seat (9) is mounted on the first base (17); the lower coupling seat (9) is provided with a first mounting groove (12); the second base (18) is provided with a second mounting groove (19); one end of the mounting bottom shell (16) is positioned and mounted on the first mounting groove (12); and the other end of the mounting bottom shell (16) is positioned and mounted on the second mounting groove (19).

7. The thick film baking pan according to claim 6, characterized in that: The heating plate assembly (2) further comprises a positioning seat (20), the positioning seat (20) being located at the bottom of the heating plate (14), the upper coupling seat (8) being provided with a first fixing hole (21), the positioning seat (20) being provided with a second fixing hole (22), the bottom of the heating plate (14) being provided with a first fixing column hole (23), the fastener (24) passing through the first fixing hole (21) and the second fixing hole (22) in sequence and being fastened to the first fixing column hole (23), so that the upper coupling seat (8) is fixed to the bottom of the heating plate (14), the thick film heating component (15) being pressed between the heating plate (14) and the positioning seat (20), the mounting bottom shell (16) being pressed between the upper coupling seat (8) and the positioning seat (20), the mounting bottom shell (16) being provided with a positioning hole (25), the bottom of the positioning seat (20) being inserted into the positioning hole (25).

8. The thick film baking tray according to claim 7, characterized in that: The lower coupling seat (9) is provided with a mounting cavity (26), and the upper coupling seat (8) is positioned and mounted in the mounting cavity (26).

9. The thick film baking pan according to claim 6, characterized in that: An upper coupler (27) is arranged on the upper coupling seat (8), and a lower coupler (28) is arranged on the lower coupling seat (9). The upper coupler (27) and the lower coupler (28) are coupled to each other, and the upper coupler (27) is electrically connected to the thick film heating component (15) via an electrode (29). A temperature controller (30) is arranged in the upper coupling seat (8), and the temperature controller (30) is attached to the bottom of the thick film heating component (15).

10. The thick film baking pan according to claim 9, characterized in that: A main control board (31), a control board (32) and a cooling fan (33) are arranged in the first base (17); the main control board (31) is electrically connected to the control board (32), the cooling fan (33), the weak current coupler (3), the temperature measuring element (7) and the lower coupler (28).

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