Baking tray using thermocouple to measure temperature

Abstract

The utility model relates to the technical field of baking tray temperature control, and provides a baking tray using thermocouples to measure temperature, a baking tray component is detachably mounted on a base, and a plurality of thermocouple temperature measuring assemblies are arranged between the baking tray component and the base. Each thermocouple temperature measuring assembly comprises a first connecting end arranged on the baking tray assembly and a second connecting end arranged on the base; the baking tray assembly is arranged on the base, and the first connecting end and the corresponding second connecting end of the thermocouple temperature measuring assembly form head-to-tail conductive connection of the thermocouple temperature measuring assembly. The thermocouple temperature measurement assemblies between the baking tray assembly and the base are arranged in a partitioned mode and form a plurality of independent temperature measurement areas arranged at intervals so as to detect the temperature of the baking tray assembly at different positions, and each temperature measurement area is provided with a temperature sensor used for detecting the temperature of the tail end of the thermocouple temperature measurement assembly so that the temperature of the baking tray assembly can be detected in the heating process of the baking tray assembly. The temperature of the tail end of the thermocouple temperature measurement assembly can be detected, and an accurate temperature detection value can be obtained through the temperature difference between the two ends of the thermocouple temperature measurement assembly.

Description

Technical Field

[0001] This utility model relates to the field of baking pan temperature control technology, specifically to a baking pan that uses thermocouple temperature measurement. Background Technology

[0002] Thermocouples are currently the most widely used sensing element for temperature measurement. Typically, to ensure accurate temperature detection, multiple thermocouples are installed on the bottom of the baking pan. The positive and negative terminals of these thermocouples are welded and fixed to the bottom of the baking pan, which causes mutual interference between the multiple thermocouples during the measurement process, thus affecting the measurement accuracy and preventing the thermocouples from detecting the temperature of the measured area in real time.

[0003] To solve the above technical problems, the positive and negative poles of the thermocouples are set separately, and a coupler is used to make the positive and negative poles of the thermocouples form a coupled conductive connection. This can solve the technical problem of mutual interference between thermocouples when the positive and negative poles of multiple thermocouples are welded and fixed together on the bottom of the baking pan during the measurement process.

[0004] However, the temperature at the negative electrode (end position) of the thermocouple changes during the heating process of the baking pan, and the temperature measurement principle of the thermocouple is as follows:

[0005] 1. Forming a thermocouple: A thermocouple is formed by welding two conductors of different materials together to form a closed circuit;

[0006] 2. Introduce a temperature difference: Place the thermocouple's measuring junction in the environment where the measurement is to be performed, while keeping the reference junction at a known temperature, usually room temperature;

[0007] 3. Generation of electromotive force: Due to the temperature difference, a voltage, i.e., electromotive force, will be generated between the two junctions (positive and negative poles) of the thermocouple.

[0008] 4. Measuring electromotive force: Read the generated voltage signal through a connected temperature measuring instrument;

[0009] 5. Temperature conversion: The instrument will convert the voltage signal into the corresponding temperature value according to the known calibration curve or formula.

[0010] Therefore, if no temperature element is set at the end of the thermocouple to detect the corresponding temperature, the temperature at the end of the thermocouple will be a constant value (the default temperature value), which will also lead to inaccurate temperature measurement of the baking pan. Utility Model Content

[0011] This invention proposes a baking tray using thermocouple temperature measurement. Several thermocouple temperature measurement assemblies between the baking tray assembly and the base are arranged in sections to form several independently spaced temperature measurement zones, which can detect the temperature of the baking tray assembly at different locations. Each temperature measurement zone is equipped with a temperature sensor for detecting the temperature at the end of the thermocouple temperature measurement assembly, so that the temperature at the end of the thermocouple temperature measurement assembly can be detected during the heating process of the baking tray assembly, and an accurate temperature detection value can be obtained by the temperature difference between the two ends of the thermocouple temperature measurement assembly.

[0012] A baking tray designed for this purpose uses thermocouple temperature measurement. The tray body is set on the baking tray assembly, which is detachably installed on the base. Several thermocouple temperature measurement assemblies are provided between the baking tray assembly and the base. Each thermocouple temperature measurement assembly includes a first connection end set on the baking tray assembly and a second connection end set on the base.

[0013] The thermocouple temperature measuring assemblies between the baking tray assembly and the base are arranged in sections and form several independently spaced temperature measuring zones.

[0014] The baking tray assembly is placed on the base, and the first connection end of the thermocouple temperature measuring assembly and the corresponding second connection end form a head-to-tail conductive connection of the thermocouple temperature measuring assembly; each temperature measuring zone is provided with a temperature sensor for detecting the temperature at the end of the thermocouple temperature measuring assembly.

[0015] The temperature measurement area includes a first temperature measurement area and a second temperature measurement area;

[0016] One of the thermocouple temperature measurement assemblies has its first connection end located on the first temperature measurement area of ​​the baking tray assembly, and its second connection end located on the first temperature measurement area of ​​the base.

[0017] The first connection end of the other part of the thermocouple temperature measurement assembly is located on the first temperature measurement area of ​​the baking tray assembly, and the second connection end is located on the second temperature measurement area of ​​the base.

[0018] Each first connection terminal and each second connection terminal on each temperature measurement zone are configured in a one-to-one correspondence.

[0019] The baking tray assembly and the base are provided with an electrical coupling connection structure. The baking tray assembly and the base are electrically coupled together through the electrical coupling connection structure, and the baking tray assembly is detachably installed on the base through the electrical coupling connection structure.

[0020] The electrical coupling connection structure includes an upper coupler disposed on the bottom of the baking tray assembly and a lower coupler disposed on the base;

[0021] The baking tray assembly is placed on the base, and the upper coupler is coupled to the lower coupler.

[0022] The baking tray assembly is detached from the base, and the upper coupler is disconnected from the lower coupler.

[0023] The first connecting ends of each temperature measuring zone are spaced apart on the bottom of the baking tray assembly, and the second connecting ends of each temperature measuring zone are spaced apart on the base. Each first connecting end forms an independent detection zone, and each detection zone is spaced apart to detect the temperature at different positions of the baking tray assembly.

[0024] The baking pan assembly includes a baking pan, with an electrically heated thick film at the bottom of the baking pan. Each first connection end is located at the bottom of the baking pan assembly, and a lead wire is provided between each electrically heated thick film and the first connection end. The electrically heated thick film and each first connection end are electrically connected through the corresponding lead wire.

[0025] The baking tray assembly also includes a receiving tray disposed below the baking tray, and a heat insulation element is provided between the receiving tray and the baking tray.

[0026] The bottom of the receiving plate is provided with an upper coupler, and a sealing element is provided between the housing of the upper coupler and the bottom of the receiving plate. The upper coupler housing and the bottom of the receiving plate are sealed together by the sealing element.

[0027] The first connection end is located on the bottom of the upper coupler housing.

[0028] The beneficial technical effects of this utility model are as follows:

[0029] Several thermocouple temperature measuring assemblies between the baking tray assembly and the base are arranged in sections to form several independently spaced temperature measuring zones. These zones can detect the temperature of the baking tray assembly at different locations. Each temperature measuring zone is equipped with a temperature sensor to detect the temperature at the end of the thermocouple temperature measuring assembly. During the heating process of the baking tray assembly, the temperature at the end of the thermocouple temperature measuring assembly can be detected, and an accurate temperature detection value can be obtained by measuring the temperature difference between the two ends of the thermocouple temperature measuring assembly. Attached Figure Description

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0031] Figure 1 This is a cross-sectional structural diagram of a baking pan assembly according to an embodiment of the present invention.

[0032] Figure 2 This is an exploded cross-sectional view of the baking tray assembly and base according to an embodiment of the present invention.

[0033] Figure 3 This is a three-dimensional structural diagram showing the assembly and disassembly of the baking tray assembly and base according to an embodiment of the present invention.

[0034] Figure 4 This is a schematic diagram of the bottom structure of a baking pan assembly according to an embodiment of the present invention. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. In order to make the above-mentioned objects, features and advantages of the present application more apparent and understandable, many specific details are set forth in the following description in order to provide 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 departing from the spirit of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0036] See Figures 1-4 A baking tray using thermocouple temperature measurement, the tray body is set on the baking tray assembly 1, the baking tray assembly 1 is detachably installed on the base 2, and a plurality of thermocouple temperature measurement assemblies 3 are provided between the baking tray assembly 1 and the base 2. Each thermocouple temperature measurement assembly 3 includes a first connecting end 4 set on the baking tray assembly 1 and a second connecting end 5 set on the base 2.

[0037] The thermocouple temperature measuring assemblies 3 between the baking tray assembly 1 and the base 2 are arranged in sections and form several independently spaced temperature measuring zones;

[0038] The baking tray assembly 1 is placed on the base 2, and the first connection end 4 of the thermocouple temperature measuring assembly 3 and the corresponding second connection end 5 form a head-to-tail conductive connection of the thermocouple temperature measuring assembly 3; each temperature measuring zone is provided with a temperature sensor 8 for detecting the temperature at the end of the thermocouple temperature measuring assembly 3.

[0039] Several thermocouple temperature measuring assemblies 3 between the baking pan assembly 1 and the base 2 are arranged in sections to form several independently spaced temperature measuring zones, which can detect the temperature of the baking pan assembly 1 at different positions. Each temperature measuring zone is equipped with a temperature sensor 8 for detecting the temperature at the end of the thermocouple temperature measuring assembly 3, so that the temperature at the end of the thermocouple temperature measuring assembly 3 can be detected during the heating process of the baking pan assembly, and an accurate temperature detection value can be obtained by the temperature difference between the two ends of the thermocouple temperature measuring assembly 3.

[0040] In this embodiment, the temperature sensor 8 is a thermistor.

[0041] The temperature measurement area includes a first temperature measurement area 6 and a second temperature measurement area 7;

[0042] One of the thermocouple temperature measuring assemblies 3 has its first connection end 4 located on the first temperature measuring area 6 of the baking tray assembly 1, and its second connection end 5 located on the first temperature measuring area 6 of the base 2.

[0043] The first connection end 4 of the other part of the thermocouple temperature measurement assembly 3 is located on the first temperature measurement area 6 of the baking tray assembly 1, and the second connection end 5 is located on the second temperature measurement area 7 of the base 2.

[0044] Each first connection terminal 4 and each second connection terminal 5 on each temperature measurement zone are configured in a one-to-one correspondence.

[0045] In this embodiment, the first temperature measuring zone 6 and the second temperature measuring zone 7 are arranged side-by-side or front-to-back. The coupling connection between the baking tray assembly 1 and the base 2 is located between the first temperature measuring zone 6 and the second temperature measuring zone 7.

[0046] An electrical coupling connection structure 9 is provided between the baking tray assembly 1 and the base 2. The baking tray assembly 1 and the base 2 are electrically coupled together through the electrical coupling connection structure 9, and the baking tray assembly 1 is detachably installed on the base 2 through the electrical coupling connection structure 9.

[0047] The electrical coupling connection structure 9 includes an upper coupler 10 disposed on the bottom of the baking tray assembly 1 and a lower coupler 11 disposed on the base 2;

[0048] The baking tray assembly 1 is placed on the base 2, and the upper coupler 10 is coupled to the lower coupler 11;

[0049] The baking tray assembly 1 is separated from the base 2, and the upper coupler 10 is detached from the lower coupler 11.

[0050] The first connecting end 4 of each temperature measuring zone is arranged at intervals on the bottom of the baking tray assembly 1, and the second connecting end 5 of each temperature measuring zone is arranged at intervals on the base 2. Each first connecting end 4 forms an independent detection zone, and each detection zone is arranged at intervals to detect the temperature of different positions of the baking tray assembly 1 respectively.

[0051] The baking pan assembly 1 includes a baking pan 12, the bottom of which is provided with an electrically heated thick film. Each first connection end 4 is provided at the bottom of the baking pan assembly 1, and each electrically heated thick film is provided with a lead wire between it and the first connection end 4. The electrically heated thick film and each first connection end 4 are electrically connected through the corresponding lead wire.

[0052] In this embodiment, the electrically heated thick film is a prior art technique, and the electrically heated thick film is fixed to the bottom of the baking pan 12 by welding or screws.

[0053] The baking tray assembly 1 also includes a receiving tray 13 disposed below the baking tray 12, and a heat insulation element 14 is provided between the receiving tray 13 and the baking tray 12.

[0054] In this embodiment, the baking tray 12 and the receiving tray 13 are fixedly connected by welding or screws.

[0055] In this embodiment, the heat insulation element 14 is a ceramic heat insulation block. The bottom of the baking pan 12 and the top of the receiving plate 13 are spaced apart by the ceramic heat insulation block, forming a heat insulation zone 16. During the heating process of the baking pan 12, the heat insulation zone 16 can prevent the heat from the bottom of the baking pan 12 from being directly transferred to the receiving plate 13. Since the receiving plate 13 is placed on the base 2, it ultimately blocks the heat from the baking pan 12 from being transferred to the base 2.

[0056] In this embodiment, the electrode of the upper coupler 10 is in contact with the electrically heated thick film, and the lead (the positive terminal of the thermocouple) is welded to the bottom of the electrically heated thick film, thus forming the hot end of the thermocouple.

[0057] In this embodiment, when a conductive contact is formed between the first connecting end 4 and the second connecting end 5, the first connecting end 4 and the second connecting end 5 form the cold end of a thermocouple. The second connecting end 5 is a weak electrical contact spring pin, and the first connecting end 4 is a weak electrical contact post. Therefore, the actual cooking temperature of the baking pan 12 of the baking pan assembly 1 is detected.

[0058] In this embodiment, the base 2 is provided with a positioning groove for positioning the insertion of the second connecting end 5. A bracket is provided below the positioning groove. The temperature sensor 8 is fixed on the bracket, and the temperature probe of the temperature sensor 8 extends out of the positioning groove. During the heating process of the baking pan assembly 1, the second connecting end 5 will generate heat. The heat is transferred to the temperature probe of the temperature sensor 8 through thermal radiation to detect the temperature of the second connecting end 5.

[0059] The bottom of the receiving tray 13 is provided with an upper coupler 10. A sealing element 15 is provided between the outer shell of the upper coupler 10 and the bottom of the receiving tray 13. The outer shell of the upper coupler 10 and the bottom of the receiving tray 13 form a sealing fit through the sealing element 15 to prevent liquid from entering the upper coupler 10 along the space between the outer shell of the upper coupler 10 and the bottom of the receiving tray 13 when the baking tray assembly 1 is being cleaned.

[0060] In this embodiment, the housing of the upper coupler 10 is provided with a sealing groove for installing the sealing element 15, and the sealing element 15 is an annular sealing ring. The housing of the upper coupler 10 is fixed to the bottom of the receiving plate 13 by screws.

[0061] The first connection end 4 is located on the bottom of the housing of the upper coupler 10. The bottom of the upper coupler 10 is provided with a socket for fixing the first connection end 4.

[0062] In this embodiment, the base 2 is provided with a circuit board that is electrically connected to the lower coupler 11, and the temperature sensor 8 and the second connection terminal 5 are electrically connected to the circuit board respectively.

[0063] In this embodiment, each temperature measuring zone may have one first connection terminal 4 and one second connection terminal 5, or each temperature measuring zone may have two first connection terminals 4 and two second connection terminals 5.

[0064] In this embodiment, the base 2 includes an upper plate fixed to the seat body by screws, the upper plate is provided with a positioning groove, and the circuit board is located in the seat body.

[0065] In this embodiment, the upper plate of the base 2 is provided with a recess for mounting the lower coupler 11, the second connecting end 5 and the temperature sensor 8. When the baking tray assembly 1 is placed on the base 2, the outer shell of the upper coupler 10 covers the recess to prevent the heat generated by the second connecting end 5 from spreading around when the baking tray assembly 1 is working, thus avoiding inaccurate temperature measurement by the temperature sensor 8.

[0066] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

[0067] In the above description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0068] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0069] In the foregoing description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to fixed connections using screws, rivets, or welding; detachable connections; or connections formed by metal processing (die casting, deep drawing, lathe machining, etc.) or injection molding; they can also be mechanical or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0070] In the above description of this application, unless otherwise expressly specified and limited, the use of terms such as "above" or "below" the second feature indicates that the first and second features are in direct contact, or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0071] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, 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 possible implementation.

Claims

1. A baking tray using thermocouple to measure temperature, comprising a tray body arranged on a baking tray assembly (1), the baking tray assembly (1) being detachably mounted on a base (2), characterized in that: The baking tray assembly (1) and the base (2) are provided with a plurality of thermocouple temperature measurement assemblies (3), each thermocouple temperature measurement assembly (3) comprising a first connecting end (4) arranged on the baking tray assembly (1) and a second connecting end (5) arranged on the base (2); The plurality of thermocouple temperature measurement assemblies (3) between the baking tray assembly (1) and the base (2) are arranged in zones and form a plurality of independently spaced temperature measurement zones; The baking tray assembly (1) is placed on the base (2), and the first connecting end (4) of the thermocouple temperature measurement assembly (3) and the corresponding second connecting end (5) form a thermocouple temperature measurement assembly (3) head-to-tail conductive connection; each temperature measurement zone is provided with a temperature sensor (8) for detecting the temperature of the end of the thermocouple temperature measurement assembly (3).

2. The oven plate using a thermocouple for temperature measurement according to claim 1, wherein: The temperature measurement zone includes a first temperature measurement zone (6) and a second temperature measurement zone (7); The first connecting end (4) of one part of the thermocouple temperature measurement assembly (3) is located on the first temperature measurement zone (6) of the baking tray assembly (1), and the second connecting end (5) is located on the first temperature measurement zone (6) of the base (2); The first connecting end (4) of another part of the thermocouple temperature measurement assembly (3) is located on the first temperature measurement zone (6) of the baking tray assembly (1), and the second connecting end (5) is located on the second temperature measurement zone (7) of the base (2).

3. The oven plate using a thermocouple for temperature measurement according to claim 1, wherein: Each first connecting end (4) and each second connecting end (5) on each temperature measurement zone are arranged one-to-one.

4. The oven plate using a thermocouple for temperature measurement according to claim 1, wherein: The baking tray assembly (1) and the base (2) are provided with an electrically coupled connection structure (9), and the baking tray assembly (1) and the base (2) are electrically coupled through the electrically coupled connection structure (9), and the baking tray assembly (1) is detachably mounted on the base (2) through the electrically coupled connection structure (9).

5. The oven plate using a thermocouple for temperature measurement according to claim 4, wherein: The electrically coupled connection structure (9) includes an upper coupler (10) arranged on the bottom of the baking tray assembly (1) and a lower coupler (11) arranged on the base (2); The baking tray assembly (1) is placed on the base (2), and the upper coupler (10) is coupled with the lower coupler (11); The baking tray assembly (1) is separated from the base (2), and the upper coupler (10) is separated from the lower coupler (11).

6. The oven plate using a thermocouple for temperature measurement according to claim 1, wherein: The first connecting end (4) on each temperature measurement zone is arranged on the bottom of the baking tray assembly (1) in a spaced manner, the second connecting end (5) on each temperature measurement zone is arranged on the base (2) in a spaced manner, each first connecting end (4) forms an independent detection interval, and each detection interval is arranged in a spaced manner to detect the temperature of different positions of the baking tray assembly (1).

7. The oven plate using thermocouple temperature measurement according to claim 1, wherein: The baking tray assembly (1) includes a baking tray (12), and the bottom of the baking tray (12) is provided with an electric heating thick film; each first connecting end (4) is arranged on the bottom of the baking tray assembly (1); each electric heating thick film is provided with a lead wire between the first connecting end (4); and the electric heating thick film and each first connecting end (4) are electrically connected through the corresponding lead wire.

8. The oven plate using a thermocouple for temperature measurement according to claim 7, wherein: The baking tray assembly (1) further includes a receiving tray (13) arranged below the baking tray (12), and the receiving tray (13) and the baking tray (12) are provided with a heat insulation element (14).

9. The oven plate using a thermocouple for temperature measurement according to claim 8, wherein: The bottom of the receiving disc (13) is provided with an upper coupler (10), and a sealing element (15) is arranged between the outer shell of the upper coupler (10) and the bottom of the receiving disc (13), and the outer shell of the upper coupler (10) and the bottom of the receiving disc (13) are in sealing cooperation through the sealing element (15).

10. The oven plate using a thermocouple for temperature measurement according to claim 9, wherein: The first connecting end (4) is arranged on the bottom of the outer shell of the upper coupler (10).

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