A countertop heating device

Abstract

The utility model discloses a kind of table top heating device, comprising: outer frame, installation box, heat-insulating cotton and heating film, inside hollow outer frame is used to install in table top bottom;Installation box is located in outer frame, and its bottom is equipped with several connecting ears, and is connected with outer frame bottom surface by the connecting ear;Heat-insulating cotton is located in installation box, and the top surface of heat-insulating cotton is 1-4cm from the top surface of installation box;Heating film is laid on the top surface of heat-insulating cotton, and the top surface of heat-insulating cotton protruding portion makes heating film abut on table top bottom.The table top heating device provided by the utility model is detachably connected by installation box and outer frame, and the elastic pre-pressing structure of heat-insulating cotton is realized to add heating function on table top, avoid drilling or structural modification simultaneously, and adapt to a variety of existing table top.

Description

Technical Field

[0001] This utility model relates to the field of heating equipment technology, and in particular to a tabletop heating device. Background Technology

[0002] Existing office, home, and even cooking and baking tables generally lack temperature control functionality in their design. In normal scenarios and cold environments, users experience significant discomfort from contact with cold countertops. In professional settings such as cooking and baking, work surfaces require frequent and precise temperature control of ingredients and containers. Traditional solutions typically rely on environmental heating devices such as air conditioners or heaters. These devices are energy-intensive and cannot provide localized heating for the entire countertop, failing to meet users' needs for direct surface heating. Furthermore, external heating devices can be used, such as heating pads on office and home countertops, or heating plates or induction cookers on cooking and baking surfaces, leading to cluttered surfaces and exposed wiring, posing safety hazards.

[0003] However, to achieve the tabletop heating function, users can only replace the original table with a whole-room heated table with built-in heating wires, resulting in high costs and inability to adapt to various tabletop sizes.

[0004] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a tabletop heating device, which aims to solve the technical problem that it is impossible to add a heating function to the existing tabletop in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A countertop heating device, comprising:

[0008] The hollow outer frame is designed for installation at the bottom of the countertop.

[0009] The mounting box is located inside the outer frame, and its bottom is provided with several connecting ears, which are connected to the bottom surface of the outer frame.

[0010] Insulation cotton is placed inside the installation box, with the top surface of the insulation cotton protruding 1-4cm from the top surface of the installation box;

[0011] The heating film is laid flat on the top surface of the insulation cotton, and the protruding part of the top surface of the insulation cotton allows the heating film to abut against the bottom of the table.

[0012] Furthermore, the mounting box includes a base plate and a surrounding edge arranged around the base plate, the cross-section of which has a "7" shape; all connecting ears are symmetrically arranged on opposite sides of the base plate.

[0013] Furthermore, the top of the edging has a downwardly bent extension edge.

[0014] Furthermore, a first wire hole is provided on the perimeter, and a second wire hole is provided on the outer frame, which is coaxially arranged with the first wire hole.

[0015] Furthermore, the outer frame is formed by four square tubes joined together to form a rectangular frame structure, and the top surface of the square tubes is provided with several small holes spaced apart.

[0016] Furthermore, a gap is formed between the inner wall of the outer frame and the outer wall of the mounting box; the connecting ear is provided with an oblong hole, and the bottom surface of the outer frame is provided with several screw holes corresponding to the position of the oblong hole, and the width of the oblong hole is greater than the inner diameter of the screw hole.

[0017] Furthermore, the top perimeter of the insulation cotton is provided with a horizontally outwardly extending flange portion, which covers the top surface of the surrounding edge.

[0018] Furthermore, the heating film is fixed to the top of the insulation cotton by several positioning adhesive dots around its perimeter.

[0019] Furthermore, the top surface of the heating film is coated with an adhesive backing layer.

[0020] Beneficial effects:

[0021] This utility model provides a countertop heating device. The device is installed in the outer frame with a mounting box. The insulation cotton deforms under pressure, pushing the heating film upward and forcing it to fit tightly against the bottom of the countertop, thus heating the countertop. The outer frame is fixed to the bottom of the countertop with adhesive. The mounting box is detachably connected to the outer frame via connecting ears, enabling quick installation of the countertop heating device. The entire installation process does not require drilling holes or structural damage to the countertop, making it particularly suitable for retrofitting existing countertops. Attached Figure Description

[0022] Figure 1 The structure of the table heating device provided by this utility model Figure 1 ;

[0023] Figure 2 The structure of the table heating device provided by this utility model Figure 2 ;

[0024] Figure 3 for Figure 2 Enlarged view of point A;

[0025] Figure 4 Exploded view of the tabletop heating device provided by this utility model;

[0026] Figure 5 Side sectional view of the tabletop heating device provided by this utility model Figure 1 ;

[0027] Figure 6 The structure of the table heating device provided by this utility model Figure 3 ;

[0028] Figure 7 Side sectional view of the tabletop heating device provided by this utility model Figure 2 .

[0029] Reference numerals: outer frame 1, second wire hole 11, square tube 12, small hole 13, screw hole 14, mounting box 2, base plate 21, rim 22, first wire hole 221, extension edge 23, connecting ear 3, waist-shaped hole 31, insulation cotton 4, flange 41, heating film 5, positioning adhesive point 6. Detailed Implementation

[0030] This utility model provides a tabletop heating device. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0031] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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 a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0032] Please see Figures 1 to 7 As shown, this utility model provides a tabletop heating device, including: an outer frame 1, a mounting box 2, insulation cotton 4, and a heating film 5; the hollow outer frame 1 is used to install on the bottom of the tabletop; the mounting box 2 is located inside the outer frame 1, and its bottom is provided with a plurality of connecting ears 3, which are connected to the bottom surface of the outer frame 1 through the connecting ears 3; specifically, the outer frame 1 is a hollow frame structure with open top and bottom, so that the mounting box 2 can be installed inside the outer frame 1.

[0033] The insulation cotton 4 is placed inside the mounting box 2, and the top surface of the insulation cotton 4 protrudes 1-4cm from the top surface of the mounting box 2; the heating film 5 is laid flat on the top surface of the insulation cotton 4, and the protruding part of the top surface of the insulation cotton 4 causes the heating film 5 to abut against the bottom of the table surface, so as to ensure that the heating film 5 is in uniform contact with the bottom of the table surface.

[0034] During installation, the insulation cotton 4 is placed inside the installation box 2, and the heating film 5 is laid on top of the insulation cotton 4. Then, the outer frame 1 is fixed to the bottom of the countertop with adhesive. Finally, the installation box 2 is installed inside the outer frame 1, and the connecting ear 3 is connected to the bottom surface of the outer frame 1 to achieve quick installation of the countertop heating device. The entire installation process does not require drilling holes or structural damage to the countertop, making it particularly suitable for retrofitting existing countertops. Furthermore, when the heating film 5 needs to be replaced due to wear and tear, only the installation box 2 needs to be removed to directly expose and replace the heating film 5, without removing the outer frame 1 or damaging the countertop, significantly reducing maintenance costs.

[0035] As described above, since the top surface of the insulation cotton 4 is higher than the top surface of the mounting box 2, and the height of the mounting box 2 is the same as or close to the height of the frame, the top surface of the insulation cotton 4 also protrudes from the top surface of the outer frame 1; and the insulation cotton 4 is elastic; when the mounting box 2 is installed inside the outer frame 1, the insulation cotton 4 is squeezed and undergoes elastic deformation, continuously pushing upwards and flattening the heating film 5 on its top surface, forcing the heating film 5 to fit tightly against the bottom of the table, thereby eliminating contact gaps to improve heat conduction efficiency, and at the same time ensuring that the heating film 5 heats evenly.

[0036] It should be noted that the tabletop should be a thermally conductive surface in order to transfer the heat generated by the heating film 5 to the top surface of the tabletop. The higher the thermal conductivity of the tabletop, the higher the heat transfer efficiency.

[0037] In the above description, the heating film 5 is a PI heating film, which is electrically connected to a control box. The control box is existing technology, and its specific structure and working principle will not be described in detail here. The control box contains a circuit board, a temperature control module, a timing module, a Bluetooth module, etc. The circuit board is electrically connected to an NTC temperature control probe, which is located on the top surface of the PI heating film and used to detect the heating temperature of the PI heating film in real time. Through the synergistic effect of the above structures, the heating temperature and heating time of the heating film 5 can be controlled via mobile phone, remote control, buttons, etc.

[0038] In a preferred embodiment, see [reference] Figure 4 , 5The mounting box 2 includes a base plate 21 and a surrounding edge 22 arranged around the base plate 21. The cross-section of the surrounding edge 22 is in the shape of a "7". All connecting ears 3 are symmetrically arranged on opposite sides of the base plate 21. The surrounding edge 22 with a "7" shape is used to enhance the structural strength of the mounting box 2, and the surrounding edge 22 can define the installation position of the insulation cotton 4.

[0039] As described above, the mounting box 2 is manufactured by integral bending of sheet metal parts, which is a simple process and features lightweight structure and high strength.

[0040] Optionally, multiple connecting ears 3 are fixed to opposite sides of the bottom edge by welding.

[0041] Optionally, the connecting ear 3 is pre-stamped on the sheet metal part, and then the surrounding edge 22 is processed by bending. At this time, the surrounding edge 22 has a hollow hole that matches the shape of the connecting ear 3.

[0042] Further, see Figure 7 The top of the edging 22 has a downwardly bent extension edge 23, making the edging 22 have an n-shaped structure, which further enhances the structure of the mounting box 2. Through the above arrangement, the side of the insulation cotton 4 forms a surface contact with the extension edge 23, increasing the contact area between the insulation cotton 4 and the edging 22, and further improving the installation stability of the insulation cotton 4. At the same time, the bent extension edge 23 can prevent the operator from being scratched by the sharp edge of the edging 22 when gripping the mounting box 2, significantly improving assembly safety.

[0043] Furthermore, see Figure 4 The edging 22 is provided with a first wire hole 221, and the outer frame 1 is provided with a second wire hole 11 coaxially arranged with the first wire hole 221. The heating film 5 is electrically connected to wires, which pass through the first wire hole 221 and the second wire hole 11 in sequence and lead out to the outside of the table heating device, realizing the orderly arrangement of the circuit and preventing the wires from drooping.

[0044] In a preferred embodiment, see [reference] Figure 4 , 5 The outer frame 1 is a rectangular frame structure formed by four square tubes 12 joined together, with the ends of adjacent square tubes 12 rigidly connected by welding. Using square tubes 12 as the main material of the outer frame 1 effectively reduces the weight of the tabletop heating device while ensuring the overall structural strength, facilitating transportation and installation and reducing the load-bearing requirements of the tabletop. Several small holes 13 are spaced apart on the top surface of the square tubes 12. When the outer frame 1 is glued to the bottom of the tabletop, the multiple small holes 13 increase the contact area between the adhesive and the outer frame 1, and the adhesive seeps into the small holes 13 to form local anchoring points, significantly improving the reliability of the bond. The small holes 13 also balance the air pressure inside and outside the outer frame 1, preventing voids during the adhesive curing process.

[0045] In a preferred embodiment, see [reference] Figure 1-3 5. A gap is formed between the inner wall of the outer frame 1 and the outer wall of the mounting box 2. This gap provides operating space for the mounting box 2 to be embedded in the outer shell, while allowing for dimensional deviations due to processing errors. The connecting lug 3 has an oblong hole 31, and the bottom surface of the outer frame 1 has several screw holes 14 corresponding to the positions of the oblong holes 31. The width of the oblong hole 31 is greater than the inner diameter of the screw holes 14. Specifically, the length of the oblong hole 31 can extend along the length direction of the mounting box 2 or along the width direction of the mounting box 2. During assembly, screws are inserted through the oblong hole 31 and then into the screw holes 14 to achieve a detachable connection between the mounting box 2 and the outer frame 1. Through the above design, the dimensional fit between the oblong hole 31 and the screw holes 14 forms a tolerance mechanism. Even if there is a deviation in the installation position of the mounting box 2, the connecting lug 3 can still be fixed to the screw holes 14 with screws. This significantly improves the assembly tolerance adaptability, avoids structural interference problems caused by insufficient processing precision, and results in a higher matching degree between the mounting box 2 and the outer frame 1 during mass production, greatly optimizing on-site installation efficiency.

[0046] In a preferred embodiment, see [reference] Figure 7 The top perimeter of the insulation cotton 4 is provided with horizontally extending flanges 41, which cover the top surface of the surrounding edge 22, and the edges of the flanges 41 are flush with the side contours of the surrounding edge 22. This arrangement increases the top surface area of ​​the insulation cotton 4 and the area of ​​the heating film 5, resulting in a larger effective heating area.

[0047] In a preferred embodiment, see [reference] Figure 6 , 7 The heating film 5 is fixed to the top of the insulation cotton 4 by a number of positioning adhesive dots 6 around its perimeter. During installation, the heating film 5 is first laid flat on the surface of the insulation cotton 4, and an array of positioning adhesive dots 6 is formed on the edge of the heating film 5 using an intermittent adhesive dotting process. The heating film 5 is temporarily fixed to the insulation cotton 4 by multiple positioning adhesive dots 6, which effectively prevents the installation box 2 from slipping off during the process of embedding into the outer frame 1.

[0048] In a preferred embodiment, the top surface of the heating film 5 is coated with an adhesive layer. Specifically, the adhesive layer is covered with a release film to ensure the adhesion of the adhesive layer. During installation, the release film on the surface of the adhesive layer is removed. When the mounting box 2 is locked to the outer frame 1, the compressed insulation cotton 4 pushes the heating film 5 upward, so that its adhesive layer fully adheres to the bottom of the table, forming a double fixing mechanism to enhance installation stability.

[0049] When replacing the heating film 5, the installation box 2 and the insulation cotton 4 are removed to expose the heating film 5. Then, the old heating film 5 is peeled off and the residual adhesive is cleaned. The new heating film 5 is then replaced using the same process, which enables the old film to be replaced quickly, avoids secondary damage to the insulation cotton 4 and the tabletop, and significantly reduces the complexity and time cost of maintenance.

[0050] In summary, this utility model constructs a tabletop processing device that is non-destructive to install, highly efficient in heat conduction, and easy to maintain, through an outer frame 1, a mounting box 2, insulation cotton 4, and a heating film 5. The outer frame 1 is fixed to the bottom of the tabletop by adhesive, and the mounting box 2 is fixed inside the outer frame 1 by connecting ears 3, realizing the detachable connection of the mounting box 2; the elastic insulation cotton 4 is placed inside the mounting box 2, and its top surface protrudes 1-4cm above the mounting box 2. During assembly, the insulation cotton 4 is compressed and deformed, continuously pushing the heating film 5 to fit tightly against the bottom of the tabletop. Combined with the heat-conducting tabletop material, uniform and efficient heat conduction is achieved. In addition, the surface of the heating film 5 is coated with an adhesive backing layer, which ensures that the heating film 5 fully adheres to the bottom of the tabletop, thereby enhancing the installation stability of the heating film 5.

[0051] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of the appended claims of this utility model.

Claims

1. A tabletop heating device, characterized in that, include: A hollow outer frame (1) is used for installation at the bottom of the countertop; The mounting box (2) is located inside the outer frame (1), and its bottom is provided with several connecting ears (3), which are connected to the bottom surface of the outer frame (1) through the connecting ears (3); Insulation cotton (4) is placed inside the mounting box (2), and the top surface of the insulation cotton (4) protrudes 1-4cm from the top surface of the mounting box (2); The heating film (5) is laid flat on the top surface of the insulation cotton (4), and the protruding part of the top surface of the insulation cotton (4) causes the heating film (5) to abut against the bottom of the table.

2. The tabletop heating device according to claim 1, characterized in that, The mounting box (2) includes a base plate (21) and a perimeter (22) surrounding the base plate (21). The perimeter (22) has a "7" shaped cross section. All connecting ears (3) are symmetrically arranged on opposite sides of the base plate (21).

3. The tabletop heating device according to claim 2, characterized in that, The top of the edging (22) is provided with a downwardly bent extension edge (23).

4. The tabletop heating device according to claim 2, characterized in that, The edging (22) is provided with a first wire hole (221), and the outer frame (1) is provided with a second wire hole (11) coaxially arranged with the first wire hole (221).

5. The tabletop heating device according to claim 1, characterized in that, The outer frame (1) is formed by four square tubes (12) joined together to form a rectangular frame structure, and the top surface of the square tubes (12) is provided with several small holes (13) spaced apart.

6. The tabletop heating device according to claim 1, characterized in that, A gap is formed between the inner wall of the outer frame (1) and the outer wall of the mounting box (2); the connecting ear (3) is provided with a waist-shaped hole (31), and the bottom surface of the outer frame (1) is provided with a number of screw holes (14) corresponding to the position of the waist-shaped hole (31), and the width of the waist-shaped hole (31) is greater than the inner diameter of the screw hole (14).

7. The tabletop heating device according to claim 2, characterized in that, The top perimeter of the insulation cotton (4) is provided with a horizontally extending flange (41) that covers the top surface of the edging (22).

8. The tabletop heating device according to claim 1, characterized in that, The heating film (5) is fixed to the top of the insulation cotton (4) by several positioning adhesive dots (6) around its perimeter.

9. The tabletop heating device according to claim 1, characterized in that, The top surface of the heating film (5) is coated with an adhesive backing layer.

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