Thick film baking tray

Abstract

The invention relates to the technical field of cooking electric appliances, and provides a thick film baking tray which is characterized in that a baking tray assembly is detachably mounted on a base, a thermocouple outgoing line and a thermocouple weak current contact piece are arranged on the baking tray assembly, a thermocouple weak current end and a temperature sensor used for detecting the temperature of the thermocouple weak current end are arranged on the base, and the baking tray assembly is arranged on the base. Conductive contact is formed between the thermocouple weak current contact piece and the thermocouple weak current end, a thermocouple tail end is formed, and the thermocouple head end is fixed in the baking tray assembly so that the temperature value of the baking tray assembly can be detected through the thermocouple head end and the thermocouple tail end in the heating process of the baking tray assembly. The thermocouple is arranged between the baking tray assembly and the base, the head end of the thermocouple is fixed in the baking tray assembly, the tail end of the thermocouple is fixed on the base, the base is provided with the temperature sensor used for detecting the tail end of the thermocouple, in the baking tray heating process, the temperature value of the cold end of the thermocouple can be actually obtained, and temperature detection of the baking tray is accurate.

Description

Technical Field

[0001] The invention relates to the technical field of cooking appliances, and in particular to a thick-film baking pan. Background Art

[0002] The principle of thermocouple temperature detection is mainly based on the thermoelectric effect, that is, when two metals of different materials 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 to form an electric current. By measuring the electromotive force in the thermocouple loop, the temperature of the measured medium can be inferred.

[0003] The baking tray uses a thermocouple to measure temperature, but the cold end temperature of the thermocouple will change during the heating process of the baking tray. If the cold end temperature of the thermocouple is not measured, the cold end temperature of the thermocouple will be set to a default constant value during the detection process, such as 26 degrees Celsius (normal temperature), which will result in inaccurate temperature detection of the baking tray. Summary of the invention

[0004] The present invention proposes a thick film baking tray, wherein a thermocouple is provided between a baking tray assembly and a base, wherein a front end of the thermocouple is fixed in the baking tray assembly, and a rear end of the thermocouple is fixed on the base, and a temperature sensor for detecting the rear end of the thermocouple is provided on the base. During the heating process of the baking tray, the temperature value of the cold end of the thermocouple can be actually obtained, and the temperature detection of the baking tray is accurate.

[0005] A thick film baking tray designed for this purpose comprises a tray body arranged on a baking tray assembly, wherein the baking tray assembly is detachably mounted on a base, a thermocouple lead wire and a thermocouple weak-current contact are provided on the baking tray assembly, a thermocouple weak-current end and a temperature sensor for detecting the temperature of the thermocouple weak-current end are provided on the base, the end of the thermocouple lead wire is electrically connected to the thermocouple weak-current contact, the baking tray assembly is placed on the base, a conductive contact is formed between the thermocouple weak-current contact and the thermocouple weak-current end and a thermocouple end is formed, and a thermocouple head end is fixed in the baking tray assembly so that during the heating process of the baking tray assembly, the temperature value of the baking tray assembly can be detected through the thermocouple head end and the thermocouple end.

[0006] The baking tray assembly comprises a baking tray, an electric heating thick film is arranged at the bottom of the baking tray, and one end of a thermocouple lead wire is fixed on the electric heating thick film at the bottom of the baking tray.

[0007] An electric coupling connector is provided between the baking tray assembly and the base, and the baking tray assembly and the base are coupled and connected through the electric coupling connector, and the baking tray assembly is detachably installed on the base through the electric coupling connector. The baking tray assembly is also provided with an electric heating thick film, and conductive contact is formed between the strong electrode of the electric coupling connector on the baking tray assembly and the electric heating thick film.

[0008] The electrical coupling connector comprises an upper coupler arranged on the bottom of the baking tray assembly and a lower coupler arranged on the base. The baking tray assembly is placed on the base, and the upper coupler is coupled and connected with the lower coupler. The baking tray assembly is disassembled from the base, and the upper coupler is separated from the lower coupler, wherein the upper coupler strong electrode, the electric heating thick film and the thermocouple lead wire are electrically connected in sequence to form a thermocouple head end.

[0009] An electrical compartment is arranged on the base, a circuit board is arranged on the electrical compartment, and the weak-current end of the thermocouple, the temperature sensor and the lower coupler are electrically connected to the circuit board respectively.

[0010] The baking tray assembly comprises a baking tray provided with an electric heating thick film and a fixed tray for supporting the baking tray. The fixed tray is provided with an upper coupler which forms an electrical coupling connection with the base.

[0011] Heat-insulating ceramics are arranged between the baking tray and the fixing tray.

[0012] The thermocouple weak-current contact is arranged on the upper coupler shell, one end of the thermocouple weak-current contact extends out of the upper coupler shell, the upper coupler shell is arranged on the bottom of the fixed disk, a seal is arranged between the upper coupler shell and the fixed disk, and a temperature controller is arranged in the upper coupler shell.

[0013] A first temperature measuring area and a second temperature measuring area are provided between the baking tray assembly and the base, and the first temperature measuring area and the second temperature measuring area are provided with a thermocouple weak-current contact and a thermocouple weak-current end, a temperature sensor for detecting the temperature of the thermocouple weak-current end, and a temperature controller that cooperates with the thermocouple.

[0014] The base includes a base body and a panel supported on the base body. The panel is provided with a lower coupler for forming an electrical coupling connection with the baking tray assembly. The lower coupler shell is fixed on the panel. The thermocouple weak-current end and the temperature sensor are arranged on the panel. The end of the thermocouple weak-current end extends out of the panel, and the temperature measuring end of the temperature sensor extends out of the panel.

[0015] The beneficial technical effects of the present invention are as follows: A thermocouple is provided between the baking tray assembly and the base. The head end of the thermocouple is fixed in the baking tray assembly, and the tail end of the thermocouple is fixed on the base. A temperature sensor for detecting the tail end of the thermocouple is provided on the base. During the heating process of the baking tray, the temperature value of the cold end of the thermocouple can be actually obtained, and the temperature detection of the baking tray is accurate.

[0016] The baking tray assembly and the base are electrically connected through an electric coupler. A thermocouple weak-current contact and a thermocouple weak-current end are provided between the baking tray assembly and the base. The baking tray assembly is placed on the base. A conductive contact is formed between the thermocouple weak-current contact and the thermocouple weak-current end. No lead wires are required between the baking tray assembly and the base, so the baking tray assembly can be easily installed and removed from the base.

[0017] A first temperature measuring area and a second temperature measuring area are provided between the baking tray assembly and the base, and are spaced apart from each other, so as to detect the heating temperature at different positions of the baking tray assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of a baking tray assembly placed on a base according to an embodiment of the present invention.

[0020] Figure 2 The figure is a schematic diagram of the assembly and decomposition structure of a baking tray assembly according to an embodiment of the present invention.

[0021] Figure 3 The figure is a schematic diagram of the assembly and decomposition structure of a baking tray assembly and a base according to an embodiment of the present invention.

[0022] Figure 4 The figure is a schematic cross-sectional structure diagram of a baking tray assembly according to an embodiment of the present invention.

[0023] Figure 5 The figure is a schematic diagram of the exploded cross-sectional structure of the assembly of the baking tray assembly and the base according to one embodiment of the present invention.

[0024] Figure 6 It is a structural schematic diagram of a baking tray assembly disassembled from a base according to an embodiment of the present invention.

[0025] Figure 7 The figure is a schematic diagram of the bottom structure of a baking tray assembly according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0027] See also Figure 1-Figure 7A thick film baking tray comprises a tray body arranged on a baking tray assembly 1, wherein the baking tray assembly 1 is detachably mounted on a base 2, a thermocouple lead wire and a thermocouple weak-current contact 3 are arranged on the baking tray assembly 1, a thermocouple weak-current terminal 4 and a temperature sensor 5 for detecting the temperature of the thermocouple weak-current terminal 4 are arranged on the base 2, the end of the thermocouple lead wire is electrically connected to the thermocouple weak-current contact 3, the baking tray assembly 1 is placed on the base 2, a conductive contact is formed between the thermocouple weak-current contact 3 and the thermocouple weak-current terminal 4 and a thermocouple end is formed, and a thermocouple head end is fixed in the baking tray assembly 1, so that during the heating process of the baking tray assembly 1, the temperature value of the baking tray assembly 1 can be detected through the thermocouple head end and the thermocouple end.

[0028] A thermocouple is provided between the baking tray assembly 1 and the base 2. The front end of the thermocouple is fixed in the baking tray assembly 1, and the rear end of the thermocouple is fixed on the base 2. A temperature sensor 5 for detecting the rear end of the thermocouple is provided on the base 2. During the heating process of the baking tray, the temperature value of the cold end of the thermocouple can be actually obtained, and the temperature detection of the baking tray is accurate.

[0029] In this embodiment, the temperature sensor 5 is a thermistor.

[0030] In this embodiment, a positioning column 21 is provided on the bottom of the baking tray assembly 1, and a positioning groove 22 is provided on the base 2. When the baking tray assembly 1 is placed on the base 2, the positioning column 21 is limited on the positioning groove 22 to prevent the baking tray assembly 1 from moving left and right on the base 2 when the baking tray assembly 1 is placed on the base 2.

[0031] The baking tray assembly 1 comprises a baking tray 6 , an electric heating thick film 7 is arranged at the bottom of the baking tray 6 , and one end of a thermocouple lead wire is fixed on the electric heating thick film 7 at the bottom of the baking tray 6 .

[0032] In this embodiment, the electric heating thick film 7 is a prior art, which is fixed to the bottom of the baking pan 6 by screws. One end of the thermocouple lead wire is fixed to the electric heating thick film 7 by welding.

[0033] An electric coupling connector 8 is provided between the baking tray assembly 1 and the base 2, and the baking tray assembly 1 and the base 2 are coupled and connected via the electric coupling connector 8, and the baking tray assembly 1 is detachably installed on the base 2 via the electric coupling connector 8. The baking tray assembly 1 is also provided with an electric heating thick film 7, and a conductive contact is formed between the strong electrode of the electric coupling connector 8 on the baking tray assembly 1 and the electric heating thick film 7.

[0034] The electrical coupling connector 8 includes an upper coupler 9 arranged on the bottom of the baking tray assembly 1, and a lower coupler 10 arranged on the base 2. The baking tray assembly 1 is placed on the base 2, and the upper coupler 9 is coupled and connected with the lower coupler 10; the baking tray assembly 1 is disassembled from the base 2, and the upper coupler 9 is separated from the lower coupler 10, wherein the upper coupler 9 strong electrode, the electric heating thick film 7 and the thermocouple lead wire are electrically connected in sequence to form a thermocouple head end.

[0035] In this embodiment, an electrically conductive contact is formed between the upper electrode of the upper coupler 9 and the electrically heating thick film 7 .

[0036] In this embodiment, the lower coupler 10 is provided with an electrode insertion hole, and the upper coupler 9 is provided with a lower electrode inserted into the electrode insertion hole.

[0037] An electrical compartment 11 is disposed on the base 2 , and a circuit board 12 is disposed on the electrical compartment 11 . The low-current end 4 of the thermocouple, the temperature sensor 5 and the lower coupler 10 are electrically connected to the circuit board 12 respectively.

[0038] The baking tray assembly 1 comprises a baking tray 6 provided with an electric heating thick film 7 and a fixing tray 13 for supporting the baking tray 6 . The fixing tray 13 is provided with an upper coupler 9 which is electrically coupled to the base 2 .

[0039] A heat-insulating ceramic 14 is provided between the baking tray 6 and the fixed tray 13 to prevent the heat of the baking tray 6 from being directly transferred to the fixed tray 13 during the heating process of the baking tray 6 , and further to prevent the heat of the baking tray 6 from being directly transferred to the base 2 through the fixed tray 13 .

[0040] The thermocouple weak-current contact 3 is arranged on the upper coupler 9 shell, one end of the thermocouple weak-current contact 3 extends out of the upper coupler 9 shell, the upper coupler 9 shell is arranged on the bottom of the fixed disk 13, a seal 15 is arranged between the upper coupler 9 shell and the fixed disk 13, and a temperature controller 16 is arranged in the upper coupler 9 shell.

[0041] In this embodiment, the baking tray 6 and the fixed tray 13 are fixedly connected by screws or welding, and a sealing groove for installing a seal 15 is provided on the shell of the upper coupler 9 to prevent liquid from entering the shell of the upper coupler 9 through the installation gap between the fixed tray 13 and the shell of the upper coupler 9.

[0042] In this embodiment, the housing of the upper coupler 9 is fixed to the bottom of the fixing plate 13 by screws.

[0043] Two spaced-apart first temperature measuring areas 17 and second temperature measuring areas 18 are provided between the baking tray assembly 1 and the base 2. The first temperature measuring area 17 and the second temperature measuring area 18 are both provided with a thermocouple weak-current contact 3 and a thermocouple weak-current end 4, a temperature sensor 5 for detecting the temperature of the thermocouple weak-current end 4, and a temperature controller 16 that cooperates with the thermocouple.

[0044] In this embodiment, the low-current end 4 of the thermocouple generates heat during the operation of the baking tray assembly 1, and the heat is transferred to the temperature sensor 5 through thermal radiation. When the baking tray assembly 1 is placed on the base 2, the shell cover of the upper coupler 9 is closed on the mounting box 23 of the base 2, so that the first temperature measuring area 17 and the second temperature measuring area 18 form closed spaces respectively. When the temperature sensor 5 is measuring, the heat of the low-current end 4 of the thermocouple is prevented from spreading everywhere.

[0045] In this embodiment, the first temperature measuring zone 17 can be provided with a thermocouple weak-current contact 3 and a thermocouple weak-current end 4, and the second temperature measuring zone 18 can be provided with a thermocouple weak-current contact 3 and a thermocouple weak-current end 4, or, the first temperature measuring zone 17 can be provided with more than two thermocouple weak-current contacts 3 and more than two thermocouple weak-current ends 4, and the second temperature measuring zone 18 can be provided with more than two thermocouple weak-current contacts 3 and more than two thermocouple weak-current ends 4.

[0046] The base 2 includes a base body 19 and a panel 20 supported on the base body 19. The panel 20 is provided with a lower coupler 10 for forming an electrical coupling connection with the baking tray assembly 1. The shell of the lower coupler 10 is fixed on the panel 20. The thermocouple weak current terminal 4 and the temperature sensor 5 are arranged on the panel 20. The end of the thermocouple weak current terminal 4 extends out of the panel 20, and the temperature measuring end of the temperature sensor 5 extends out of the panel 20.

[0047] In this embodiment, the panel 20 is provided with an installation groove for assembling the installation box 23, and the installation box 23 is provided with an installation avoidance position for installing the lower coupler 10; the installation box 23 is provided with two temperature sensors 5 arranged at intervals on the left and right, and the temperature measuring probe of the temperature sensor 5 extends out of the installation box 23, and the bottom of the installation box 23 is provided with a bracket 24 for fixing the bottom of the temperature sensor 5, and the bracket 24 is fixed to the bottom of the installation box 23 by screws, and the end of the thermocouple weak-current terminal 4 extends out of the installation box 23, and the bottom of the thermocouple weak-current terminal 4 is supported on the bracket 24, and the installation box 23 is provided with a through hole for extending the temperature sensor 5 and the thermocouple weak-current terminal 4.

[0048] In this embodiment, a support frame for supporting the panel 20 is provided on the base body 19 , and a mounting groove for mounting a control box is provided on the base body 19 . The control circuit board in the control box is electrically connected to the circuit board 12 .

[0049] In this embodiment, when the baking tray assembly 1 is placed on the base 2, the base 2 is provided with a socket connected to one end of the power cord, and the plug at the other end of the power cord is inserted into the socket. When the socket switch is turned on, the upper coupler 9 is electrically connected to the electric heating thick film 7 through the (strong current) electrode to power the electric heating thick film 7. A thermostat 16 is provided in the shell of the upper coupler 9, and the thermostat 16 is attached to the bottom of the electric heating thick film 7. When the temperature of the baking tray 6 exceeds the limit value, the thermostat 16 is disconnected, thereby stopping the electric heating thick film 7 from working.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0051] In the above description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0052] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In the above description of the present application, unless otherwise clearly specified and limited, if the terms "install", "connect", "connect", "fix" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection using screws, rivets or welding, or a detachable connection, or integrated through metal processing (die casting, deep drawing, stamping, lathe and other mechanical processing methods) or through injection molding; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0054] In the above description of the present application, unless otherwise clearly stipulated and limited, if there is a description that a first feature is "on" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0055] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

Claims

1. A thick film baking pan, comprising a pan body arranged on a baking pan assembly (1), wherein the baking pan assembly (1) is detachably mounted on a base (2), a thermocouple is arranged between the baking pan assembly (1) and the base (2), a head end of the thermocouple is fixed in the baking pan assembly (1), a tail end of the thermocouple is fixed on the base (2), and a temperature sensor (5) for detecting the tail end of the thermocouple is arranged on the base; The baking pan assembly (1) is provided with a thermocouple lead wire and a thermocouple weak-current contact piece (3), the base (2) is provided with a thermocouple weak-current end (4), and a temperature sensor (5) for detecting the temperature of the thermocouple weak-current end (4), the end of the thermocouple lead wire is electrically connected to the thermocouple weak-current contact piece (3), the baking pan assembly (1) is placed on the base (2), the thermocouple weak-current contact piece (3) and the thermocouple weak-current end (4) form an electrically conductive contact and a thermocouple end, and the thermocouple head end is fixed in the baking pan assembly (1), so that during the heating process of the baking pan assembly (1), the temperature value of the baking pan assembly (1) can be detected through the thermocouple head end and the thermocouple end.

2. The thick film baking tray according to claim 1, characterized in that: The baking tray assembly (1) comprises a baking tray (6), the bottom of which is provided with an electric heating thick film (7), and one end of a thermocouple lead wire is fixed to the electric heating thick film (7) at the bottom of the baking tray (6).

3. The thick film baking tray according to claim 1, characterized in that: An electric coupling connector (8) is provided between the baking tray assembly (1) and the base (2), the baking tray assembly (1) and the base (2) are coupled and connected via the electric coupling connector (8), and the baking tray assembly (1) is detachably mounted on the base (2) via the electric coupling connector (8). The baking tray assembly (1) is also provided with an electric heating thick film (7), and conductive contact is formed between a strong electrode of the electric coupling connector (8) on the baking tray assembly (1) and the electric heating thick film (7).

4. The thick film baking tray according to claim 3, characterized in that: The electrical coupling connector (8) comprises an upper coupler (9) arranged on the bottom of the baking tray assembly (1), and a lower coupler (10) arranged on the base (2); the baking tray assembly (1) is placed on the base (2), and the upper coupler (9) and the lower coupler (10) are coupled and connected; the baking tray assembly (1) is disassembled from the base (2), and the upper coupler (9) and the lower coupler (10) are separated, wherein the strong electrode of the upper coupler (9), the electric heating thick film (7) and the thermocouple lead wire are electrically connected in sequence to form a thermocouple head end.

5. The thick film baking tray according to claim 4, characterized in that: An electrical compartment (11) is provided on the base (2), a circuit board (12) is provided on the electrical compartment (11), and the thermocouple weak current end (4), the temperature sensor (5) and the lower coupler (10) are electrically connected to the circuit board (12) respectively.

6. The thick film baking tray according to claim 1, characterized in that: The baking tray assembly (1) comprises a baking tray (6) provided with an electric heating thick film (7), and a fixed tray (13) for supporting the baking tray (6), wherein the fixed tray (13) is provided with an upper coupler (9) which is electrically coupled to the base (2).

7. The thick film baking tray according to claim 6, characterized in that: A heat-insulating ceramic (14) is provided between the baking tray (6) and the fixed tray (13).

8. The thick film baking tray according to claim 6, characterized in that: The thermocouple weak-current contact (3) is arranged on the housing of the upper coupler (9), one end of the thermocouple weak-current contact (3) extends out of the housing of the upper coupler (9), the housing of the upper coupler (9) is arranged on the bottom of the fixed disk (13), a sealing member (15) is arranged between the housing of the upper coupler (9) and the fixed disk (13), and a temperature controller (16) is arranged in the housing of the upper coupler (9).

9. The thick film baking tray according to claim 1, characterized in that: A first temperature measuring area (17) and a second temperature measuring area (18) are provided between the baking tray assembly (1) and the base (2), and the first temperature measuring area (17) and the second temperature measuring area (18) are provided with a thermocouple weak-electric contact piece (3) and a thermocouple weak-electric end (4), a temperature sensor (5) for detecting the temperature of the thermocouple weak-electric end (4), and a temperature controller (16) that cooperates with the thermocouple.

10. The thick film baking tray according to claim 1, characterized in that: The base (2) comprises a base body (19) and a panel (20) supported on the base body (19); a lower coupler (10) is provided on the panel (20) for forming an electrical coupling connection with the baking tray assembly (1); a housing of the lower coupler (10) is fixed on the panel (20); a thermocouple weak current end (4) and a temperature sensor (5) are arranged on the panel (20); an end of the thermocouple weak current end (4) extends out of the panel (20); and a temperature measuring end of the temperature sensor (5) extends out of the panel (20).

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