Baking tray temperature sensing device
By combining the elastic element with the positioning post and the limiting cover, the problems of easy detachment and poor contact of the baking tray temperature sensor are solved, thus achieving accurate and stable temperature monitoring and extending its service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-04-03
AI Technical Summary
Existing baking pan temperature sensors are prone to inaccurate temperature monitoring due to aging and detachment of the adhesive or poor contact with the baking pan.
The combination structure of elastic element, positioning post and limiting cover makes the temperature probe fit tightly against the heat-conducting surface of the baking pan. The compression of the elastic element ensures that the temperature probe is in close contact with the baking pan, and the positioning post and limiting cover provide a stable installation structure to avoid shaking and displacement.
It improves the accuracy and stability of temperature sensing, reduces temperature conduction errors, ensures the temperature probe remains in a stable position during operation, and extends its service life.
Smart Images
Figure CN224070235U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of temperature sensing, and more specifically, to a baking pan temperature sensing device. Background Technology
[0002] Baking pans are commonly used in electric griddles, waffle makers, and other similar equipment. These devices require more precise temperature control, and currently, the temperature of the baking pan is mostly monitored using temperature sensors. Related technologies involve attaching the temperature sensor to the surface of the baking pan with adhesive or using clips or other structures to monitor its temperature. However, with adhesive attachment, the adhesive can age over time, causing the temperature sensor to detach and lose its temperature-sensing function. Clip-on installation, on the other hand, can leave gaps between the temperature sensor and the baking pan, preventing a tight fit and resulting in inaccurate temperature readings. Utility Model Content
[0003] In view of this, the present invention provides a baking pan temperature sensing device with a stable structure that allows the temperature sensor to always be in close contact with the surface of the baking pan to obtain accurate temperature parameters.
[0004] The objective of this utility model is achieved through the following technical solution:
[0005] A baking pan temperature sensing device, comprising:
[0006] A baking pan with both a heating surface and a heat-conducting surface;
[0007] A reflector plate is connected to the heat-conducting surface of the baking pan, and a heat-conducting cavity for installing a heating tube is formed between the reflector plate and the baking pan; the reflector plate is provided with mounting holes, at least two positioning posts spaced apart, and a limiting cover, the limiting cover being fixed to the positioning posts;
[0008] A temperature sensing component includes a temperature sensing probe and a positioning block. The temperature sensing probe is inserted into the mounting hole, and the positioning block is fixed to the outer periphery of the temperature sensing probe and movably sleeved on the two positioning posts.
[0009] Each of the positioning posts has an elastic element on its outer periphery. The elastic element is located between the limiting cover and the positioning block and is used to press the temperature sensing probe onto the heat-conducting surface.
[0010] In the above technical solution, the elastic element presses the temperature sensor against the heat-conducting surface by squeezing the positioning block. This ensures tight contact between the temperature sensor and the heat-conducting surface of the baking pan, effectively reducing temperature conduction errors caused by poor contact. This allows the temperature sensor to more accurately sense the temperature of the baking pan. Furthermore, two elastic elements are configured to match the positioning posts. This ensures even force distribution on the temperature sensing component and allows for automatic alignment and fitting between the baking pan and the temperature sensor, reducing the impact of unevenness on the baking pan's heat-conducting surface.
[0011] In addition, the design of the positioning posts and positioning blocks provides a stable installation structure for the temperature sensing component. The two positioning posts are spaced apart, and the positioning block is fixed to the outer periphery of the temperature probe and movably sleeved on the positioning posts. It is also limited by the limiting cover, so that the temperature probe will not easily shake or shift during installation and use, thus ensuring the stability of the temperature probe's position.
[0012] Optionally, in one possible implementation, the limiting cover is opposite to the mounting hole, and the limiting cover is also provided with a limiting hole opposite to the mounting hole, and the temperature sensing probe is movably inserted into the limiting hole.
[0013] The aforementioned structure provides multiple limiting and guiding functions for the temperature sensor. In addition to the positioning function of the positioning post and positioning block, the limiting hole further ensures that the temperature sensor moves within its normal operating range, preventing excessive shaking or deviation from the predetermined position during the baking process, thereby improving the stability and accuracy of temperature sensing.
[0014] Optionally, in one possible implementation, the limiting cover is detachably connected to the positioning post by a screw, the positioning post having a screw hole at one end away from the reflector, and the screw passing through the limiting cover and threadedly connected to the screw hole.
[0015] In the above technical solution, the limiting cover is detachably connected to the positioning post via screws. When the limiting cover or the temperature sensing component malfunctions and needs repair or replacement, this connection method allows users to easily unscrew the screws with tools, thus easily removing the limiting cover. Furthermore, the detachable connection method allows for fine-tuning of the limiting cover's position according to actual needs during installation or subsequent adjustments.
[0016] Optionally, in one possible implementation, the positioning block is provided with stepped holes that match the positioning posts, the stepped holes are respectively fitted onto the corresponding positioning posts, and the elastic element is located in the corresponding stepped hole.
[0017] In the above technical solution, the stepped hole design can save installation space for the elastic component and effectively constrain it. On the one hand, it can prevent the elastic component from shifting laterally or coming off during operation, ensuring that the elastic component is always in a normal working state and can continuously and stably press the temperature probe against the heat-conducting surface; on the other hand, this constraint also helps to improve the service life of the elastic component, as it avoids damage to the elastic component due to unnecessary friction or collision.
[0018] Alternatively, in one possible implementation, the stepped hole is a closed or semi-closed through hole.
[0019] In the above technical solutions, both closed and semi-closed through holes can ensure that the positioning component can be completely fitted inside the positioning post, thereby preventing the positioning block from detaching from the positioning post.
[0020] Optionally, in one possible implementation, the temperature probe includes a bracket, an aluminum temperature sensing head disposed at the end of the bracket, and a thermistor disposed within the bracket and connected to the aluminum temperature sensing head. The thermistor is connected to an external control board via a wire, and the aluminum temperature sensing head is in contact with the heat-conducting surface.
[0021] In the above technical solution, the aluminum temperature sensor is in contact with the heat-conducting surface. Aluminum has excellent thermal conductivity, allowing the heat from the baking pan to be quickly and efficiently transferred to the aluminum temperature sensor, thus enabling the thermistor to detect temperature changes more rapidly. The thermistor is housed within a bracket and connected to the aluminum temperature sensor, providing a relatively stable operating environment for it. The bracket also provides some protection and isolation, reducing interference from external factors on the thermistor.
[0022] Optionally, in one possible implementation, the bracket has a conductive cavity inside, the aluminum temperature sensor is fixed to one end of the cavity, and the wire extends from the other end of the cavity; the aluminum temperature sensor has an annular groove on its outer periphery, and a flange is provided at the end of the cavity; a rubber ring is provided inside the annular groove, and the rubber ring is engaged between the annular groove and the flange.
[0023] In the above technical solution, the rubber ring can make the internal structure of the bracket more stable. During assembly, the rubber ring is fitted into the annular groove and squeezed to insert it into the top of the cavity until it moves to the bottom of the flange. At this time, the rubber ring is not squeezed and recovers its deformation and abuts against the bottom of the flange, which can effectively prevent the aluminum temperature sensor from detaching.
[0024] Alternatively, in one possible implementation, the support is made of ceramic material or heat-resistant plastic.
[0025] In the above technical solutions, both ceramic materials and heat-resistant plastics possess certain thermal insulation properties. In temperature sensing probes, using such materials for the support can reduce the further diffusion of heat conducted from the heat-conducting surface to the outside, particularly preventing excessive heat transfer to the area surrounding the thermistor and thus avoiding any impact on the thermistor.
[0026] Optionally, in one possible implementation, the reflector plate is further provided with two interfaces communicating with the heat-conducting cavity.
[0027] In the above technical solution, the two interfaces facilitate the connection between the heating tube located in the heat-conducting cavity and the external circuit board, so as to provide power to the heating tube.
[0028] Alternatively, in one possible implementation, the elastic element is a metal spring or elastic rubber.
[0029] In the above technical solution, both the metal spring and the elastic rubber have good elasticity, which can always apply an elastic force to the positioning block, so that it has the force to move in the direction of the baking pan. Attached Figure Description
[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0031] Figure 1 This is an exploded view of the overall structure of one embodiment.
[0032] Figure 2 This is an overall structural assembly drawing of one embodiment.
[0033] Figure 3 for Figure 2 Enlarged view of part A in the middle.
[0034] Figure 4 This is a schematic diagram of the structure of a temperature sensing component according to one embodiment.
[0035] Figure 5 This is a cross-sectional view of a temperature sensing component according to one embodiment.
[0036] Reference numerals: 1-Baking tray; 11-Heat-conducting cavity; 2-Reflector; 21-Mounting hole; 22-Positioning post; 23-Limiting cover; 24-Interface; 3-Temperature sensing component; 31-Temperature probe; 311-Bracket; 312-Aluminum temperature sensor; 3121-Rubber ring; 313-Wire; 314-Thermistor; 32-Positioning block; 4-Elastic element; 5-Screw. Detailed Implementation
[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0038] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0039] Please refer to Figure 1 and Figure 2 This embodiment provides a temperature sensing device for a baking pan 1, including: a baking pan 1, a reflector 2, and a temperature sensing component 3; the baking pan 1 has a heating surface and a heat-conducting surface; the reflector 2 is connected to the heat-conducting surface of the baking pan 1, and a heat-conducting cavity 11 for installing a heating tube is formed between the reflector 2 and the baking pan 1; the reflector 2 is provided with a mounting hole 21, at least two positioning posts 22 spaced apart, and a limiting cover 23, the limiting cover 23 being fixed to the positioning posts 22, as in this embodiment, two positioning posts 22 are provided; the temperature sensing component 3 includes a temperature sensing probe 31 and a positioning block 32, the temperature sensing probe 31 being inserted into the mounting hole 21, and the positioning block 32 being fixed to the outer periphery of the temperature sensing probe 31 and movably sleeved on the two positioning posts 22; wherein, each positioning post 22 is provided with an elastic element 4 on its outer periphery, the elastic element 4 being located between the limiting cover 23 and the positioning block 32, and being used to press the temperature sensing probe 31 onto the heat-conducting surface.
[0040] Specifically, the mounting hole 21 is located at the center of the reflector plate 2, and the two positioning posts 22 are symmetrically arranged around the central axis of the mounting hole 21, that is, the center of the mounting hole 21 and the center of the two positioning posts 22 are collinear. In addition, the heating tubes (not shown in the figure) arranged in the heat-conducting cavity 11 can be spirally or S-shaped to cover the entire heat-conducting surface as much as possible. In this embodiment, one end of the elastic member 4 abuts against the limiting cover 23 and the other end abuts against the positioning block 32. Since the limiting cover 23 is fixed to the positioning post 22, the elastic member 4 will squeeze the positioning block 32, thereby causing the positioning block 32 to drive the temperature sensing probe 31 to press against the heat-conducting surface.
[0041] Furthermore, in this embodiment, the elastic element 4 is a metal spring or elastic rubber, preferably a metal spring. Both metal springs and elastic rubber have good elasticity and can always apply an elastic force to the positioning block 32, giving it the force to move in the direction of the baking pan 1.
[0042] In this embodiment, the elastic element 4 presses the temperature probe 31 against the heat-conducting surface by squeezing the positioning block 32. This ensures that the temperature probe 31 is in close contact with the heat-conducting surface of the baking pan 1, effectively reducing temperature conduction errors caused by poor contact. This allows the temperature probe 31 to more accurately sense the temperature of the baking pan 1. Furthermore, the elastic element 4 is configured with two elements that match the positioning post 22. This ensures that the temperature sensing component 3 is subjected to uniform force and allows the baking pan 1 and the temperature probe 31 to automatically correct and fit together, reducing the impact of unevenness on the heat-conducting surface of the baking pan 1.
[0043] In addition, the design of the positioning post 22 and the positioning block 32 provides a stable installation structure for the temperature sensing component 3. The two positioning posts 22 are spaced apart, and the positioning block 32 is fixed to the outer periphery of the temperature probe 31 and movably sleeved on the positioning post 22. It is limited by the limiting cover 23, so that the temperature probe 31 will not easily shake or shift during installation and use, thus ensuring the stability of the temperature probe position.
[0044] Please refer to Figure 3 In this embodiment, taking two positioning posts 22 as an example, the two ends of the limiting cover 23 are respectively fixed on the two positioning posts 22. The limiting cover 23 is opposite to the mounting hole 21, and the limiting cover 23 is also provided with a limiting hole opposite to the mounting hole 21. The temperature probe 31 is movably inserted into the limiting hole. Specifically, the end of the temperature probe 31 closer to the baking plate is inserted into the mounting hole 21, and the part farther away from the baking plate 1 is inserted into the limiting hole.
[0045] The above structure provides multiple limiting and guiding functions for the temperature sensor 31. In addition to the positioning function of the positioning post 22 and the positioning block 32, the limiting hole can further ensure that the temperature sensor 31 moves within the normal working range, avoiding excessive shaking or deviation from the predetermined position during the operation of the baking pan 1, thereby improving the stability and accuracy of temperature sensing.
[0046] In this embodiment, the limiting cover 23 is an integral structure. Of course, as another implementation, the limiting cover 23 can also be a split structure, that is, there are two limiting covers 23, which are respectively connected to two positioning posts 22. In this case, a clearance space is formed between the two limiting covers 23, and the temperature sensing probe 31 can move within the clearance space.
[0047] It should be noted that the limiting cover 23 is detachably connected to the positioning post 22 by screws 5. The end of the positioning post 22 away from the reflector plate 2 is provided with a screw hole, and the screw 5 passes through the limiting cover 23 and is threadedly connected to the screw hole.
[0048] The limiting cover 23 is detachably connected to the positioning post 22 via screws 5. When the limiting cover 23 or the temperature sensing component 3 malfunctions and needs repair or replacement, this connection method allows the user to easily unscrew the screws 5 with tools, thereby easily removing the limiting cover 23. In addition, the detachable connection method allows for fine-tuning of the position of the limiting cover 23 according to actual needs during installation or subsequent adjustments.
[0049] Please refer to Figure 4 In this embodiment, the positioning block 32 is provided with stepped holes that match the positioning post 22. Each stepped hole is fitted onto the corresponding positioning post 22, and the elastic element 4 is located within the corresponding stepped hole. The stepped hole is either a closed or semi-closed through hole. In this embodiment, a semi-closed through hole is preferred, meaning the stepped hole is not a complete through hole and has notches at its edges.
[0050] The stepped hole design saves installation space for the elastic element 4 and effectively constrains it. On the one hand, it prevents the elastic element 4 from shifting laterally or coming off during operation, ensuring that it remains in normal working condition and can continuously and stably press the temperature probe 31 against the heat-conducting surface. On the other hand, this constraint also helps to improve the service life of the elastic element 4, as it prevents it from being damaged by unnecessary friction or impact.
[0051] Furthermore, both closed and semi-closed through holes ensure that the positioning element can be completely fitted inside the positioning post 22, thereby preventing the positioning block 32 from detaching from the positioning post 22. Semi-closed through holes can save material while providing more installation leeway.
[0052] Please continue to refer to this. Figure 4 and Figure 5In this embodiment, the temperature probe 31 includes a bracket 311, an aluminum temperature sensing head 312 disposed at the end of the bracket 311, and a thermistor 314 disposed within the bracket 311 and connected to the aluminum temperature sensing head 312. The thermistor 314 is an NTC type and is connected to an external control board via a wire 313. The aluminum temperature sensing head 312 is in contact with a heat-conducting surface. Specifically, a cavity for accommodating the thermistor 314 is provided in the axial direction inside the bracket 311. The cavity is a conductive structure. The aluminum temperature sensing head 312 is fixed at one end of the cavity, and the thermistor 314 is inserted into the aluminum temperature sensing head 312. The wire 313 is connected to the thermistor 314 and extends from the other end of the cavity. Ceramic adhesive is filled into the gaps within the cavity to fix the aluminum temperature sensing head 312, the thermistor, and the wire 313. It should be noted that the aluminum temperature sensor 312 has an annular groove on its outer periphery and a flange at the end of the cavity. A rubber ring 3121 is placed inside the annular groove, and the rubber ring 3121 is engaged between the annular groove and the flange. Alternatively, the rubber ring 3121 can be replaced by a retaining spring.
[0053] The aluminum temperature sensor 312 is in contact with the heat-conducting surface. Aluminum has excellent thermal conductivity, allowing the heat from the baking pan 1 to be quickly and efficiently transferred to the aluminum temperature sensor 312, enabling the thermistor to detect temperature changes more rapidly. The thermistor is housed within the bracket 311 and connected to the aluminum temperature sensor 312, providing a relatively stable operating environment for the thermistor. The bracket 311 also provides some protection and isolation, reducing interference from external factors on the thermistor.
[0054] The bracket 311 is made of ceramic or heat-resistant plastic. Both ceramic and heat-resistant plastic have certain thermal insulation properties. In the temperature sensor 31, the bracket 311 is made of such materials to reduce the further diffusion of heat conducted from the heat-conducting surface to the outside, especially to prevent excessive heat from being transferred to the area around the thermistor and affecting the thermistor.
[0055] It should be noted that the reflector 2 is also provided with two interfaces 24 that communicate with the heat-conducting cavity 11. The two interfaces 24 facilitate the connection of the heating tube located in the heat-conducting cavity 11 to an external circuit board, so as to provide power to the heating tube. Specifically, one end of the heating tube extends from one of the interfaces 24 and the other end extends from the other interface 24, which facilitates the connection of the heating tube to external components.
[0056] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0057] Furthermore, the terms "first" and "second" are used 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 as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0058] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A baking pan temperature sensing device, characterized in that, include: The baking pan has both a heating surface and a heat-conducting surface; A reflector plate is connected to the heat-conducting surface of the baking pan, and a heat-conducting cavity for installing a heating tube is formed between the reflector plate and the baking pan; the reflector plate is provided with mounting holes, at least two positioning posts spaced apart, and a limiting cover, the limiting cover being fixed to the positioning posts; A temperature sensing component includes a temperature sensing probe and a positioning block. The temperature sensing probe is inserted into the mounting hole, and the positioning block is fixed to the outer periphery of the temperature sensing probe and movably sleeved on the two positioning posts. Each of the positioning posts is fitted with an elastic element on its outer periphery. The elastic element is located between the limiting cover and the positioning block and is used to press the temperature sensing probe onto the heat-conducting surface.
2. The baking pan temperature sensing device according to claim 1, characterized in that, The limiting cover is opposite to the mounting hole, and the limiting cover is also provided with a limiting hole opposite to the mounting hole, and the temperature sensing probe is movably inserted into the limiting hole.
3. The baking pan temperature sensing device according to claim 1, characterized in that, The limiting cover is detachably connected to the positioning post by a screw. The end of the positioning post away from the reflector is provided with a screw hole. The screw passes through the limiting cover and is threadedly connected to the screw hole.
4. The baking pan temperature sensing device according to claim 1, characterized in that, The positioning block is provided with stepped holes that match the positioning posts. The stepped holes are respectively fitted onto the corresponding positioning posts, and the elastic element is located in the corresponding stepped hole.
5. The baking pan temperature sensing device according to claim 4, characterized in that, The stepped hole is a closed or semi-closed through hole.
6. The baking pan temperature sensing device according to claim 1, characterized in that, The temperature sensing probe includes a bracket, an aluminum temperature sensing head disposed at the end of the bracket, and a thermistor disposed inside the bracket and connected to the aluminum temperature sensing head. The thermistor is connected to an external control board via a wire, and the aluminum temperature sensing head is in contact with the heat-conducting surface.
7. The baking pan temperature sensing device according to claim 6, characterized in that, The bracket has a conductive cavity inside, the aluminum temperature sensor is fixed at one end of the cavity, and the wire extends from the other end of the cavity; the aluminum temperature sensor has an annular groove on its outer periphery, and a flange is provided at the end of the cavity; a rubber ring is provided in the annular groove, and the rubber ring is engaged between the annular groove and the flange.
8. The baking pan temperature sensing device according to claim 6, characterized in that, The support is made of ceramic material or heat-resistant plastic.
9. The baking pan temperature sensing device according to claim 1, characterized in that, The reflector plate is also provided with two interfaces that communicate with the heat-conducting cavity.
10. The baking pan temperature sensing device according to any one of claims 1-9, characterized in that, The elastic element is a metal spring or elastic rubber.