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 utility model relates to a baking tray technical field, in particular to a thick film type baking tray. BACKGROUND

[0002] Chinese patent document number CN204931428U discloses a baking tray on January 6, 2016, in particular to an electric baking tray, including base, heating tube and baking tray, wherein the baking tray is arranged on the base, and the base is provided with power supply, the back of the baking tray is provided with the recess for the fixed installation of heating tube, the heating tube is embedded into the recess, and is fixed with the recess wall, and the two end portions thereof are drawn out behind the baking tray and are electrically connected with the power supply. The heating tube of the electric baking tray is located on the baking tray, and the power supply is arranged on the base. The power supply is connected with the heating tube through the wire. However, the heating tube and the power supply are arranged on different components, and the wire needs to pass through between the base and the baking tray, so that the wiring is inconvenient. In addition, the electric baking tray generally detects the temperature of the baking tray through a thermocouple. The principle of temperature detection of the thermocouple 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 endpoints (the hot end and the cold end of the thermocouple) are different, a certain electromotive force will be generated, forming an electric current. By measuring the electromotive force in the thermocouple loop, the temperature of the measured medium (the baking tray) can be calculated. However, this temperature measurement method is not accurate enough.

[0003] Therefore, it is necessary to make further improvement. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a thick film type baking tray which is simple in structure, accurate in temperature measurement, good in cooking effect, good in user experience and high in practicability, so as to overcome the shortcomings of the prior art.

[0005] A thick film type baking tray designed for the purpose comprises a base assembly and a heating disc assembly, characterized in that a coupling assembly is arranged between the base assembly and the heating disc assembly, the base assembly and the heating disc assembly are coupled and connected through the coupling assembly, a weak current coupler and a plurality of thermocouples are arranged on the coupling assembly, the weak current coupler is electrically connected with the weak current connection ends of the thermocouples respectively, the strong current connection ends of the thermocouples are connected with the heating disc assembly, and a temperature measuring element for measuring the temperature of the weak current connection ends of the thermocouples is arranged on the weak current coupler.

[0006] 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 coupled and connected with each other.

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

[0008] The weak current coupler is installed on the lower coupling seat, and a plurality of weak current connectors are arranged on the weak current coupler, the weak current connectors correspond to the thermocouples one by one, and the weak current connectors are electrically connected to the weak current connection ends of the thermocouples.

[0009] A plurality of first mounting holes are arranged on the upper coupling seat, the thermocouples are installed on the corresponding first mounting holes, and the strong current connection ends of the thermocouples are connected to the bottom of the heating disc assembly through wires.

[0010] The heating disc assembly comprises a heating disc, a thick film heating component and a mounting bottom shell, the base assembly comprises a first base and a second base arranged at intervals, the thick film heating component is attached to the bottom of the heating disc, the mounting bottom shell is arranged on the bottom of the heating disc, the thick film heating component is located in the mounting bottom shell, the lower coupling seat is installed on the first base, the first mounting groove is arranged on the lower coupling seat, the second mounting groove is arranged on the second base, one end of the mounting bottom shell is positioned and installed on the first mounting groove, and the other end of the mounting bottom shell is positioned and installed on the second mounting groove.

[0011] The heating disc assembly further comprises a positioning seat, the positioning seat is located at the bottom of the heating disc, the first fixing hole is arranged on the upper coupling seat, the second fixing hole is arranged on the positioning seat, the first fixed column hole is arranged on the bottom of the heating disc, and the fastener is fastened and connected with the first fixed column hole after passing through the first fixing hole and the second fixing hole in sequence, so that the upper coupling seat is fixed on the bottom of the heating disc, the thick film heating component is press-fitted between the heating disc and the positioning seat, the mounting bottom shell is press-fitted between the upper coupling seat and the positioning seat, the positioning hole is arranged on the mounting bottom shell, and the bottom of the positioning seat is sleeved into the positioning hole.

[0012] The mounting cavity is arranged on the lower coupling seat, and the upper coupling seat is positioned and installed in the mounting cavity.

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

[0014] The main control board, the control board and the cooling fan are arranged in the first base, the main control board is electrically connected with the control board, the cooling fan, the weak current coupler, the temperature measuring element and the lower coupler.

[0015] The utility model discloses a thick film type baking tray sets up coupling assembly between base assembly and heating disc assembly, and base assembly and heating disc assembly are coupled by coupling assembly, so that base assembly and heating disc assembly do not need to lay electric wire, and therefore do not have the problem of inconvenient wiring, in addition, the temperature measuring element for measuring the temperature of each weak electric connection end is arranged between the weak electric connection end (the cold end of thermocouple) of a plurality of thermocouples, the temperature measuring element can measure the actual temperature of the cold end of thermocouple, and the temperature value measured by the temperature measuring element and the temperature difference value are added by combining the temperature difference value of the hot end and the cold end deduced by voltage signal, so that the accurate heating disc temperature value (the temperature value of the hot end of thermocouple) can be obtained, and the thermocouple temperature measurement is more accurate BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the cross section view of the baking tray in an embodiment of the utility model.

[0017] Figure 2 It is the whole structure schematic view of the baking tray in an embodiment of the utility model.

[0018] Figure 3 It is the partial structure schematic view of the baking tray in an embodiment of the utility model.

[0019] Figure 4 It is the internal structure schematic view of the base in an embodiment of the utility model.

[0020] Figure 5 It is the cross section view of the lower coupling seat in an embodiment of the utility model.

[0021] Figure 6 It is the whole structure schematic view of the lower coupling seat in an embodiment of the utility model.

[0022] Figure 7 It is the partial structure exploded view of the baking tray in an embodiment of the utility model.

[0023] Figure 8 It is the whole structure schematic view of the heating disc assembly in an embodiment of the utility model.

[0024] Figure 9 It is the exploded structure schematic view of the heating disc assembly in an embodiment of the utility model.

[0025] Figure 10 It is Figure 7 The enlarged structure schematic view of A in the middle.

[0026] Figure 11 It is the exploded structure schematic view of the upper coupling seat in an embodiment of the utility model.

[0027] Figure 12 It is the whole structure schematic view of the upper coupling seat in an embodiment of the utility model. Detailed Implementation

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

[0029] See Figures 1-12 This thick-film baking pan includes a base assembly 1 and a heating plate assembly 2. A coupling assembly is provided between the base assembly 1 and the heating plate assembly 2, and the base assembly 1 and the heating plate assembly 2 are coupled together through the coupling assembly. The coupling assembly is provided with a low-voltage coupler 3 and several thermocouples 4. The low-voltage coupler 3 is electrically connected to the low-voltage connection terminal 5 of each thermocouple 4. The high-voltage connection terminal 6 of the thermocouple 4 is connected to the bottom of the heating plate assembly 2. The low-voltage coupler 3 is provided with a temperature sensing element 7 for measuring the temperature of the low-voltage connection terminal 5 of the thermocouple 4. The temperature of the low-voltage connection terminal 5 (i.e., the cold junction of the thermocouple 4) of the thermocouple 4 is measured by the temperature sensing element 7 to compensate for the temperature of the thermocouple 4 and achieve accurate temperature measurement.

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

[0031] Temperature sensing element 7 is installed on lower coupling base 9. One temperature sensing element 7 is set between the weak electrical connection ends 5 of several thermocouples 4, so that several weak electrical connection ends 5 are concentrated and integrated in the same measurement range. The cold junction temperature of multiple thermocouples 4 can be detected by one temperature sensing element 7, which can reduce manufacturing costs.

[0032] When there is a temperature difference between the measuring junction (hot junction) and the reference junction (cold junction) of thermocouple 4, an electromotive force (voltage) is 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 and cold junctions can then be deduced from 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. Traditional baking pans use this principle to detect the temperature of the heating plate. However, when the baking pan is heated, the temperature of the cold junction of 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 plate being different from the heating plate temperature value obtained above. This 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 junction of the thermocouple, thus obtaining an accurate heating plate temperature.

[0033] The low-voltage coupler 3 is mounted on the lower coupling base 9. The low-voltage coupler 3 is provided with several low-voltage connectors 10. Each low-voltage connector 10 corresponds to a thermocouple 4. The low-voltage connector 10 is electrically connected to the low-voltage connection end 5 of the thermocouple 4. The low-voltage connector 10 is a low-voltage contact spring pin, and the low-voltage contact spring pin makes conductive contact with the low-voltage connection end 5 of the thermocouple 4.

[0034] Thermocouples 4 and low-voltage connectors 10 are arranged in two horizontally and three vertically, for a total of six. Temperature sensing element 7 is located in the middle of the measurement range.

[0035] The temperature sensing element 7 is located among several low-voltage connectors 10. The low-voltage coupler 3 is provided with a second mounting hole 34 for installing the temperature sensing element 7. The bottom of the temperature sensing element 7 is provided with a fixing plate 35. The fixing plate 35 is provided with a third fixing hole 36. The lower coupling seat 9 is provided with a second fixing post hole 37. The screw passes through the third fixing hole 36 and is fastened to the second fixing post hole 37 to fix the temperature sensing element 7 on the lower coupling seat 9.

[0036] The upper coupling seat 8 is provided with several first mounting holes 11. The thermocouple 4 is installed in the corresponding first mounting holes 11. The high-voltage connection end 6 of the thermocouple 4 (i.e. the hot end of the thermocouple 3) is connected to the bottom of the heating plate assembly 2 through the wire 13. That is, the high-voltage connection end 6 of the thermocouple 4 is connected to the terminal of the bottom of the heating plate 14 or the terminal of the thick film heating component 15 through the wire 13.

[0037] Temperature sensing 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 base 16. The base assembly 1 includes a first base 17 and a second base 18 spaced apart from each other. The thick film heating component 15 is attached to the bottom of the heating plate 14 and is used to heat the heating plate 14. The mounting base 16 is disposed at the bottom of the heating plate 14, and the thick film heating component 15 is located inside the mounting base 16. The lower coupling seat 9 is mounted on the first base 17 and 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 base 16 is positioned and mounted on the first mounting groove 12, and the other end of the mounting base 16 is positioned and mounted on the second mounting groove 19, thereby enabling the entire heating plate assembly 2 to be mounted 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. The upper coupling seat 8 is provided with a first fixing hole 21, and the positioning seat 20 is provided with a second fixing hole 22. The bottom of the heating plate 14 is provided with a first fixing post hole 23. Fasteners 24 (screws) pass through the first fixing hole 21 and the second fixing hole 22 in sequence and are then fastened to the first fixing post 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 press-fitted between the heating plate 14 and the positioning seat 20. The mounting base 16 is press-fitted between the upper coupling seat 8 and the positioning seat 20. The mounting base 16 is provided with a positioning hole 25, and the bottom of the positioning seat 20 is fitted into the positioning hole 25. The positioning hole 25 is also used to avoid the electrical components inside 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 installed 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 to each other. The upper coupler 27 is electrically connected to the thick film heating component 15 through the (high voltage) electrode 29 to supply power to the thick film heating component 15. The thick film heating component 15 is a thick film heating plate. A temperature controller 30 is provided inside 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 plate 14 exceeds the limit value, the temperature controller 30 is disconnected, thereby stopping the thick film heating component 15 from working.

[0042] The upper coupling seat 8 is provided with a high-voltage pin 38, and the lower coupling seat 9 is provided with a high-voltage socket 39. The high-voltage pin 38 and the high-voltage socket 39 are connected to each other to form a conductive contact.

[0043] The first base 17 houses a main control board 31, a control board 32, and a cooling fan 33. The main control board 31 is electrically connected to the control board 32, the cooling fan 33, the low-voltage coupler 3, the temperature sensing element 7, and the lower coupler 28. A power socket 40 for connecting to a power source is provided on one side of the first base 17. The power socket 40 is electrically connected to the main control board 31 to supply power to the various electrical components. The cooling fan 33 is used to dissipate heat from the main control board 31 and the control board 32. A control panel 41 is provided on the top of the first base 17 corresponding to the position of the control board 32.

[0044] 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 thick-film baking pan, comprising a base assembly (1) and a heating plate assembly (2), characterized in that: A coupling assembly is provided between the base assembly (1) and the heating plate assembly (2). The base assembly (1) and the heating plate assembly (2) are coupled together through the coupling assembly. A weak current coupler (3) and several thermocouples (4) are provided on the coupling assembly. The weak current coupler (3) is electrically connected to the weak current connection end (5) of each thermocouple (4). The strong current connection end (6) of the thermocouple (4) is connected to the heating plate assembly (2). A temperature measuring element (7) is provided on the weak current coupler (3) for measuring the temperature of the weak current connection end (5) of the thermocouple (4).

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

3. The thick-film baking pan according to claim 2, characterized in that: The temperature measuring element (7) is installed on the lower coupling seat (9). The temperature measuring element (7) is set between the weak electrical connection terminals (5) of several thermocouples (4) so ​​that several weak electrical connection terminals (5) are concentrated and integrated in the same measurement range.

4. The thick-film baking pan according to claim 3, characterized in that: The weak current coupler (3) is installed on the lower coupling seat (9). Several weak current connectors (10) are provided on the weak current coupler (3). The weak current connectors (10) correspond one-to-one with the thermocouples (4). The weak current connectors (10) are electrically connected to the weak current connection end (5) of the thermocouples (4).

5. The thick-film baking pan according to claim 4, characterized in that: The upper coupling seat (8) is provided with several first mounting holes (11), and the thermocouple (4) is installed on the corresponding first mounting hole (11). The high-voltage connection end (6) of the thermocouple (4) is connected to the bottom of the heating plate assembly (2) through the wire (13).

6. The thick-film baking pan according to claim 2, characterized in that: The heating plate assembly (2) includes a heating plate (14), a thick film heating component (15), and a mounting base (16). The base assembly (1) includes a first base (17) and a second base (18) spaced apart from each other. The thick film heating component (15) is attached to the bottom of the heating plate (14). The mounting base (16) is located at the bottom of the heating plate (14). The thick film heating component (15) is located inside the mounting base (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 base (16) is positioned and mounted on the first mounting groove (12). The other end of the mounting base (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) also includes a positioning seat (20), which is located at the bottom of the heating plate (14). The upper coupling seat (8) is provided with a first fixing hole (21), the positioning seat (20) is provided with a second fixing hole (22), and the bottom of the heating plate (14) is provided with a first fixing post hole (23). The fastener (24) passes through the first fixing hole (21) and the second fixing hole (22) in sequence and is then fastened to the first fixing post hole (23) so that the upper coupling seat (8) is fixed at the bottom of the heating plate (14). The thick film heating component (15) is pressed between the heating plate (14) and the positioning seat (20). The mounting base (16) is pressed between the upper coupling seat (8) and the positioning seat (20). The mounting base (16) is provided with a positioning hole (25), and the bottom of the positioning seat (20) is fitted into the positioning hole (25).

8. The thick-film baking pan 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 installed in the mounting cavity (26).

9. The thick-film baking pan according to claim 6, characterized in that: 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 to each other. The upper coupler (27) is electrically connected to the thick film heating component (15) through the electrode (29). A temperature controller (30) is provided inside the upper coupling seat (8). 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: The first base (17) is equipped with a main control board (31), a control board (32) and a cooling fan (33). The main control board (31) is electrically connected to the control board (32), the cooling fan (33), the low-voltage coupler (3), the temperature measuring element (7) and the lower coupler (28).

Images