Flexible vegetable warming board

Abstract

The utility model discloses a flexible vegetable warming board, belongs to the field of vegetable warming boards, and solves the problem that the temperature of a supporting column is too high due to the fact that an existing heating element easily transmits temperature to the supporting column. According to the technical scheme, the heating plate mainly comprises a plate body made of a flexible material, a heating film arranged in the plate body and a controller electrically connected with the heating film, a plurality of supporting columns used for supporting are arranged at the bottom of the plate body, the heating film is painted with the flexible material to form a sheet-shaped structure, a plurality of avoiding holes are formed in the heating film, and the controller is electrically connected with the controller. The heating film is fixed in the plate body so that the supporting columns can be located below the avoiding holes. According to the heating film, the temperature over the supporting columns is reduced through the avoiding holes, and therefore the temperature of the supporting columns is prevented from being too high.

Description

Technical Field

[0001] This utility model demonstrates a flexible food warming board, belonging to the technical field of food warming boards. Background Technology

[0002] As people's living standards continue to improve, their diets are not only more focused on nutrition, flavor, and unique characteristics, but also on maintaining the freshness of the food throughout the meal. While existing dining tables provide convenience for diners to access food, they cannot keep hot dishes at a constant temperature, thus affecting the taste. Moreover, many workers who want to eat hot meals after working overtime have to reheat their food when they get home, which affects the taste. Warming plates, on the other hand, can keep food warm without the need for reheating, thus preserving its flavor.

[0003] In order to facilitate the storage of food warming boards, there are flexible food warming boards in the existing technology. The board body of this type of food warming board is made of flexible materials such as silicone, so that the food warming board can be rolled up. When in use, the food warming board is laid out so that the food can be placed on the board to keep it warm; when not in use, the food warming board can be rolled up to reduce the space occupied by the food warming board and make it easy to store.

[0004] However, existing flexible cooking warmers have the following problems. First, the heating elements of existing cooking warmers use alloy heating wires, which are easily bent during the rolling process, affecting their lifespan. After long-term and repeated bending, the alloy heating wires are prone to breakage. This also leads to gaps between the alloy heating wires and the board, thus affecting the heating effect. In addition, when flexible materials are used for the heating elements, these elements have a large overall area and are located directly on top of the support column after being fixed. When the heating element heats up, the heat is directly transferred to the support column, which is supported on the tabletop and has difficulty dissipating heat. This results in the support column having a high temperature, which may even exceed the surface of the board, potentially scalding the solid wood tabletop or cracking the glass tabletop. Utility Model Content

[0005] The purpose of this invention is to solve the problem that existing heating elements easily transfer heat to the support column, causing the support column to overheat. To this end, a flexible food warmer is provided. The heating film reduces the temperature directly above the support column through avoidance holes, thereby preventing the support column from overheating.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A flexible food warming board includes a board body made of flexible material, a heating film placed inside the board body, and a controller electrically connected to the heating film. The bottom of the board body is provided with a number of support columns for support. The heating film is coated with a flexible material to form a sheet structure. A number of clearance holes are opened on the heating film. The heating film is fixed inside the board body so that the support columns are all below the clearance holes.

[0008] The beneficial effects of using this utility model are:

[0009] In this embodiment, the heating film has several clearance holes, and the support column is located below the clearance holes. This means that after the heating film is fixed, it can avoid being directly above the support column through the clearance holes, thus reducing the temperature directly above the support column. It also increases the distance between the top of the support column and the heating film, reducing heat transfer to the support column and helping to lower its temperature. This effectively prevents the support column from burning the tabletop due to excessive heat, making the food warmer safer and more reliable. Furthermore, the heating film has a flexible sheet structure with good elastic deformation capability. Both the heating film and the upper surface of the board are flat, meaning the structure of the heating film fits closely to the board. When the board is rolled up, the heating film can deform with the board and is less likely to hinder the rolling process, making rolling easier and less strenuous. It also ensures a tight fit between the heating film and the board, reducing the possibility of large gaps appearing after repeated rolling. This gives the food warmer better heat retention and helps extend its service life.

[0010] Preferably, the projection of the support column onto the heating film is entirely within the clearance holes. By employing the aforementioned technical solution, where the area of ​​the clearance holes is larger than the area of ​​the top of the support column, and the entire support column is positioned within the clearance holes, it is effectively ensured that there is no heating film directly above the support column. This also increases the distance between the heating portion of the heating film and the top of the support column, reducing heat transfer from the heating film to the support column and thus lowering the temperature of the support column.

[0011] Preferably, the number of clearance holes does not exceed the number of support columns. By employing the aforementioned technical solution, it can be ensured that all support columns have clearance holes on their tops, while avoiding the presence of excessive clearance holes that would significantly reduce the heating area of ​​the heating film, thus enabling the heating film to have greater heating efficiency.

[0012] Preferably, the number of clearance holes is equal to the number of support columns, with each clearance hole corresponding to one support column. By adopting the aforementioned technical solution, each support column can correspond to one clearance hole. This ensures that there is no heating film directly above the support column while minimizing the area of ​​the clearance holes, thereby increasing the heating area of ​​the heating film. This helps improve the heating efficiency of the heating film and gives the warming board better heat retention.

[0013] Preferably, the number of clearance holes is less than the number of support columns, with multiple support columns located below the same clearance hole. Using the aforementioned technical solution, only a small number of clearance holes are needed to meet the requirements of all support columns, which helps reduce the manufacturing difficulty of the heating film.

[0014] Preferably, the plate body includes an upper plate and a lower plate that are spliced ​​together, with a cavity formed between the upper and lower plates to accommodate the heating film. Using the aforementioned technical solution reduces the difficulty of installing and replacing the heating film. When the heating film fails or needs replacement, the upper and lower plates can be separated to detach the heating film from the cavity, thus improving the assembly and maintenance efficiency of the food warmer.

[0015] Preferably, the plate and the support column are an integral structure, and the plate has a cavity for accommodating the heating film. Using the aforementioned technical solution can improve the connection stability between the plate and the support column, prevent the plate and support column from detaching after multiple rolls, and significantly extend the roll life of the food warming board.

[0016] Preferably, the plate includes a connection end for connecting to the controller, and the connection end is provided with a wiring port, through which the heating film is electrically connected to the controller. By adopting the aforementioned technical solution, placing the wiring port at the connection end between the plate and the controller can shorten the length of the connecting wire exposed outside the plate, making the laying of the connecting wire simpler and more convenient, while also improving the aesthetics of the food warming board.

[0017] Preferably, the controller has a mounting groove on the side facing the board for the connection end to extend into, and the controller is connected to the board so that the mounting groove seals the wiring port of the connection end. Using the aforementioned technical solution, the controller shields the wiring port through the mounting groove, thereby preventing the connection wires from being directly exposed outside the board and protecting the connection wires, ensuring a stable and reliable electrical connection between the controller and the heating film.

[0018] Preferably, the distance between the heating film and the support column is greater than the distance between the heating film and the upper surface of the board. By adopting the aforementioned technical solution, increasing the height difference between the heating film and the support column reduces heat transfer to the lower side of the board, thereby lowering the temperature of the support column and effectively preventing it from burning the tabletop due to excessive heat, making the use of the food warmer safer and more reliable. Furthermore, the smaller distance between the heating film and the upper surface of the board allows heat to be quickly transferred to the upper surface, improving the heating efficiency of the board and reducing heat loss during the transfer process, thus increasing heat utilization.

[0019] Other features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] Figure 1 This is an exploded view of a flexible food warmer according to this utility model;

[0022] Figure 2 This is a top view of a flexible food warming board according to the present invention;

[0023] Figure 3 This is a top view of the heating film in a flexible food warmer according to this utility model;

[0024] Figure 4 for Figure 3 A magnified view of part A in the middle;

[0025] Figure 5 This is a partial side view of a flexible food warmer according to the present invention.

[0026] Reference numerals: 1. Plate; 11. Connecting end; 12. Support column; 2. Controller; 21. Mounting groove; 3. Heating film; 31. Clearance hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., 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.

[0029] 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 expressly defined.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] like Figures 1 to 5 As shown in the figure, this embodiment demonstrates a flexible food warmer, including a board body 1, a heating film 3, and a controller 2. Both the board body 1 and the heating film 3 are made of flexible material. The board body 1 has an internal cavity, and the heating film 3 is fixed inside the cavity. An air heater is fixedly connected to one side of the board body 1 and electrically connected to the heating film 3 inside the cavity. Several support columns 12 are provided at the bottom of the board body, which are placed on a table to prevent the board body 1 from directly contacting the table. The upper surface of the board body is flat to facilitate the placement of food requiring heat preservation. Furthermore, the heating film 3 is generally sheet-like. The structure includes a heating film 3 with several clearance holes 31. The heating film 3 is fixed inside the plate 1 so that the support columns 12 are all below the clearance holes 31. When it is necessary to keep the food warm, the plate 1 is unfolded and the food is placed on the upper surface of the plate 1. Then, the controller 2 controls the heating film 3 to be powered on to generate heat. The heat generated by the heating film 3 is transferred to the surface of the plate 1, thereby providing heat for the food on the upper surface of the plate 1. At the same time, the support columns 12 raise the lower surface of the plate 1 to avoid direct contact between the table and the plate 1 with the high temperature, reducing the possibility of the table being burned.

[0032] In this embodiment, the heating film 3 has multiple clearance holes 31, and the support column 12 is located below the clearance holes 31. That is, after the heating film 3 is fixed, it can avoid the direct top of the support column 12 through the clearance holes 31, so that there is no heating film 3 directly above the support column 12. When the heating film 3 is energized, the heat generated is directly between the support columns 12, which can reduce the temperature directly above the support column 12. In addition, the heating position of the heating film 3 is distributed between two adjacent support columns 12, which can increase the distance between the top of the support column 12 and the heating film 3, reduce the heat transfer to the support column 12, help reduce the temperature rise of the support column 12, and effectively prevent the support column 12 from being burned due to excessive temperature. The tabletop design makes the use of the food warming board safer and more reliable. Furthermore, the heating film 3 has a flexible sheet structure with good elastic deformation capability. Both the heating film 3 and the upper surface of the board 1 are flat, meaning the structure of the heating film 3 fits closely to the structure of the board 1. When the board 1 is rolled up, the heating film 3 can deform with the board 1 and is less likely to create resistance during the rolling process, making the rolling of the board 1 easier and less strenuous. This also ensures a tight fit between the heating film 3 and the board 1, reducing the possibility of large gaps appearing between them after repeated rolling. This gives the food warming board better heat retention and helps extend its service life.

[0033] like Figure 3 As shown, in this embodiment, the support columns 12 are arranged in a matrix on the lower surface of the plate 1. The number of clearance holes 31 is equal to the number of support columns 12. The clearance holes 31 correspond one-to-one with the support columns 12, that is, there is a clearance hole 31 directly above each support column 12. This ensures that each support column 12 corresponds to a clearance hole 31 while minimizing the total area of ​​the clearance holes 31. This allows the heating film 3 to retain a larger heating area, enabling it to generate more heat and improving its heating efficiency, thus giving the warming plate a better heat preservation effect.

[0034] like Figure 4 As shown, in order to further reduce heat transfer to the support column 12, in this embodiment, the projection of the support column 12 on the heating film 3 is entirely within the clearance hole 31. Specifically, in this embodiment, the top surface of the support column 12 is a rectangular structure, and the clearance hole 31 is also a rectangular structure. At the same time, the length and width of the clearance hole 31 are both greater than the length and width of the top surface of the support column 12, and the top surface of the support column 12 is located in the middle of the clearance hole 31, so that the area of ​​the clearance hole 31 is greater than the area of ​​the top surface of the support column 12, so that the entire top surface of the support column 12 is surrounded within the clearance hole 31. This effectively ensures that there is no heating film 3 directly above the support column 12, and also increases the distance between the heating part of the heating film 3 and the top of the support column 12, reducing the heat transfer of the heating film 3 to the support column 12, thereby reducing the temperature of the support column 12.

[0035] It should be noted that in other embodiments, the top surface of the support column 12 and the clearance hole 31 can also be circular or elliptical or other mechanical structures. The top surface of the support column 12 and the clearance hole 31 are matched in structure, and it is ensured that the top surface of the support column 12 is completely inside the clearance hole 31.

[0036] It should be noted that in other embodiments, the number of support columns 12 may also exceed the number of clearance holes 31, that is, the top surfaces of multiple support columns 12 can be accommodated in one clearance hole 31 at the same time, thereby reducing the number of clearance holes 31 and reducing the manufacturing difficulty of the heating film 3.

[0037] To further reduce heat transfer to the support column 12, in this embodiment, the distance between the heating film 3 and the support column 12 is greater than the distance between the heating film 3 and the upper surface of the plate 1. This increases the height difference between the heating film 3 and the top surface of the support column 12, thereby increasing the downward heat transfer distance and heat dissipation during downward transfer. This reduces the temperature at the bottom of the support column 12, effectively preventing the support column 12 from burning the tabletop due to excessive temperature, making the use of the food warmer safer and more reliable. In addition, the smaller distance between the heating film 3 and the upper surface of the plate 1 allows heat to be quickly transferred to the upper surface of the plate 1, which helps improve the heating efficiency of the plate 1 and also reduces heat loss during the transfer process, improving the utilization rate of heat.

[0038] In this embodiment, the plate 1 is made of flexible materials such as silicone. The plate 1 is injection molded into a whole, forming an internal cavity. Furthermore, the plate 1 and the support column 12 are also an integral structure, which improves the connection stability between the plate 1 and the support column 12, preventing detachment after multiple rolls and significantly extending the lifespan of the warming board. In this embodiment, the heating film 3 is made by coating a mixture of carbon crystal particles and polymer resin. After curing, the heating film 3 is installed in the cavity of the plate 1. When the heating film 3 is energized, under the action of the electric field, it... The carbon molecular clusters in the heating film 3 undergo Brownian motion, generating heat energy through collisions and friction between carbon molecules. This heat is transferred to the plate 1 via infrared radiation and air convection, causing the plate 1 to heat up rapidly and thus heating the food placed on its surface. The heating film 3, made from a mixture of carbon crystal particles and polymer resin, is highly efficient and energy-saving, with a faster heating rate, which helps improve the heating efficiency of the food warmer. Furthermore, the infrared radiation generated by the heating film 3 does not produce high-frequency radiation, making it harmless to the human body and potentially improving microcirculation. Of course, it is understood that in other embodiments, the heating film 3 may also be made of other materials with good electrical and thermal conductivity.

[0039] like Figure 2 and Figure 5 As shown, in this embodiment, the overall structure of the plate 1 and the heating film 3 is rectangular. The plate 1 includes two long sides and two short sides. One of the short sides of the plate 1 is connected to the controller 2 to form a connection end 11. The plate 1 has a wiring port at the connection end 11. The heating film 3 is electrically connected to the controller 2 through the wiring port. In addition, the controller 2 has a mounting groove 21 on the side facing the plate 1 for the connection end 11 to extend into. The length of the controller 2 is less than the length of the short side. Therefore, the mounting groove 21 penetrates the controller 2 in the length direction of the controller 2. The connection end 11 of the plate 1 extends into the mounting groove 21 and is fixedly connected to the controller 2 so that the mounting groove 21 closes the wiring port of the connection end 11.

[0040] It is understandable that in other embodiments, the plate 1 and the heating film 3 may also be square, round, or other irregularly shaped structures.

[0041] In this embodiment, the wiring port is located at the connection end 11 between the board body 1 and the controller 2, which can shorten the length of the connecting wire exposed outside the board body 1, making the laying of the connecting wire simpler and more convenient, and also improving the aesthetics of the warming board; in addition, the controller 2 forms a shield for the wiring port through the mounting groove 21, thereby preventing the connecting wire from being directly exposed outside the board body 1, and also protecting the connecting wire, so that the electrical connection between the controller 2 and the heating film 3 remains stable and reliable.

[0042] Regarding the manufacturing process of the plate 1, in this embodiment, the heating film 3 is first coated and then the cured heating film 3 is added into the mold of the plate 1. The plate 1 is then injection molded, and after molding, the plate 1 directly wraps and fixes the heating film 3.

[0043] It should be noted that in other embodiments, the plate 1 may also include an upper plate 1 and a lower plate 1. During manufacturing, the upper plate 1 or the lower plate 1 is first injection molded, and after molding, the heating film 3 is applied to the upper plate 1 or the lower plate 1. After the heating film 3 is cured, the other half of the plate 1 is injection molded.

[0044] It is understandable that in other embodiments, the plate 1 can also be formed by splicing an upper plate 1 and a lower plate 1, with a cavity between the upper plate 1 and the lower plate 1 to accommodate the heating film 3. This can reduce the difficulty of installing and replacing the heating film 3. When the heating film 3 fails or needs to be replaced, the heating film 3 can be removed from the cavity by splitting the upper plate 1 and the lower plate 1, which helps to improve the assembly and maintenance efficiency of the warming plate.

[0045] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A flexible warming chafing dish, comprising a plate body made of flexible material, a heating film placed in the plate body, and a controller electrically connected with the heating film, the bottom of the plate body is provided with a plurality of supporting columns for supporting, characterized in that, The heating film is formed by brushing flexible material into a sheet structure, and a plurality of avoiding holes are formed in the heating film. The heating film is fixed in the plate body so that the support columns are all below the avoiding holes.

2. A flexible warming chafing dish as defined in claim 1 wherein, The projections of the support columns on the heating film are all in the avoiding holes.

3. The flexible warming chafing dish of claim 1, wherein, The number of avoiding holes is not more than the number of support columns.

4. A flexible hot plate as defined in claim 3, wherein The number of avoiding holes is equal to the number of support columns, and the avoiding holes and the support columns correspond to each other one by one.

5. The flexible hot plate of claim 3 wherein, The number of avoiding holes is less than the number of support columns, and a plurality of support columns are below the same avoiding hole.

6. The flexible warming chafing dish of claim 1, wherein, The plate body comprises an upper plate body and a lower plate body which are spliced with each other, and a containing cavity for containing the heating film is formed between the upper plate body and the lower plate body.

7. The flexible warming chafing dish of claim 1 wherein, The plate body and the support columns are in an integral structure, and the plate body is provided with a containing cavity for containing the heating film.

8. The flexible warming chafing dish of claim 1, wherein, The plate body comprises a connecting end connected with the controller, the connecting end is provided with a wiring port, and the heating film is electrically connected with the controller through the wiring port.

9. A flexible hot plate as defined in claim 8, wherein The side of the controller facing the plate body is provided with a mounting groove for the connecting end to extend into, and the controller is connected with the plate body so that the mounting groove encloses the wiring port of the connecting end.

10. The flexible warming chafing dish of claim 1, wherein, The distance between the heating film and the support columns is greater than the distance between the heating film and the upper surface of the plate body.

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