A heated enamel tabletop

Abstract

This utility model specifically discloses a heated enamel tabletop, comprising an enamel tabletop with an internal graphene heating film, and table legs, a drying rack, and a blocking frame on its lower surface. A pair of opposing inner sidewalls of the blocking frame are rotatably connected by a pivot to grouped rotating end plates, with rotating blades fixed on the pivot to cover the opening of the frame. Each group of rotating end plates is linked by a connecting frame, which extends to the outside through a guide groove on the sidewall of the blocking frame and is connected as a whole by a crossbar. This utility model achieves rapid heating and uniform heat dissipation of the tabletop through the composite structure of the graphene heating film and the cast iron substrate; simultaneously, the blocking frame and adjustable rotating blades form an adjustable hot air drying chamber, using the residual heat radiating downwards from the tabletop to dry clothes on the drying rack, greatly improving heat utilization efficiency and combining rapid heating and efficient drying functions into one.

Description

Technical Field

[0001] This utility model relates to the field of enamel tabletop technology, specifically a general utility model of an enamel tabletop with heating function. Background Technology

[0002] Existing heated tabletops are a common household or office product, primarily functioning to heat the desktop to enhance user comfort. These products typically integrate heating elements such as heating wires, carbon fiber, or heating films inside or beneath wooden, stone, or metal panels. By applying electricity, they generate heat to maintain a certain temperature on the desktop, and are widely used in dining tables, office desks, and other settings to meet the need for warmth in winter.

[0003] However, existing heated tabletops still have some obvious technical problems in practical use. First, the heat utilization rate is low: the heat generated by existing products is mainly lost to the surroundings in the form of radiation and convection, especially the heat lost to the underside of the tabletop, which cannot be effectively collected and utilized, resulting in energy waste. Second, the function is too limited; its design is limited to heating the space above the tabletop, and it cannot convert the inevitable downward heat radiation into other practical functions, resulting in low product added value. Finally, there are limitations in material selection. Ordinary metal materials conduct heat too quickly, which can easily lead to localized overheating of the tabletop or poor heat retention; while wood materials have poor thermal conductivity and heat resistance, and long-term use may lead to deformation or safety hazards, making it difficult to achieve a good balance between heating efficiency and safety. Utility Model Content

[0004] The purpose of this invention is to provide a heated enamel tabletop to solve the problems mentioned in the background art.

[0005] The technical solution of this utility model is as follows: a heated enamel tabletop, comprising an enamel tabletop with a graphene heating film inside, table legs, a drying rack, and a surrounding blocking frame fixedly connected to its lower surface; each drying rack has two legs fixedly connected to the lower surface of the enamel tabletop, and the blocking frame is located in the middle of these legs; it also includes multiple flip-up end plates, which are divided into two groups and rotatably connected to a pair of opposite inner sidewalls of the blocking frame via a rotating shaft; the rotating shaft is circumferentially fixedly connected with flip-up blades, and all flip-up blades can completely cover the opening of the blocking frame when closed; each group of flip-up end plates is also rotatably connected to a connecting frame, which is configured to synchronously drive all flip-up end plates in the same group to rotate around its rotating shaft; the sidewall of the blocking frame has a guide groove, one end of the connecting frame passes through the guide groove and extends to the outside of the blocking frame, and its end is fixedly connected to a crossbar, which connects the multiple connecting frames in the same group into one unit.

[0006] Preferably, a limiting mechanism is fixedly provided on the outside of the side wall of the blocking frame where the guide groove is provided; the limiting mechanism includes a limiting seat fixedly installed on the side wall of the blocking frame, a sliding block is slidably assembled on the lower part of the limiting seat, and the sliding block is elastically connected to the limiting seat through a spring, and the limiting mechanism is used to limit the movement of the connecting frame.

[0007] Preferably, the enamel tabletop has a multi-layer composite structure, comprising, from the outside to the inside, an enamel layer as the surface, a cast iron layer as the substrate, and a graphene heating film as the heat source.

[0008] Preferably, the system further includes a temperature control unit electrically connected to the graphene heating film. The temperature control unit includes a microprocessor and a temperature sensor. The microprocessor is configured to receive signals from the temperature sensor and, based on a preset temperature curve or a user-defined value, perform PID regulation on the current flowing through the graphene heating film to achieve closed-loop control of the enamel tabletop surface temperature. This utility model provides a heated enamel tabletop with the following improvements and advantages compared to the prior art: Firstly, this utility model integrates the enamel tabletop with the underlying drying rack, blocking frame, and flip-up end plate into a single functional unit. When the graphene heating film is activated to heat the tabletop, the heat dissipated downwards is effectively contained by the blocking frame and the closed flip-up blades, forming a stable hot air drying chamber around the drying rack. This structural design allows the heat energy that would otherwise be lost and wasted to be used to dry small items of clothing (such as socks and towels) placed on the drying rack, transforming purely consumer energy consumption into a practical drying function, significantly improving the overall energy utilization efficiency. Secondly, this invention incorporates a graphene heating film layered on the inner side of the cast iron layer, forming a highly efficient heat conduction system. Graphene possesses excellent rapid thermal conductivity, enabling it to quickly transfer heat to the cast iron substrate with its strong heat storage capacity. Utilizing the rapid heating of graphene and the uniform heating of cast iron, this overcomes the slow heating problem caused by the high thermal inertia of traditional pure cast iron or enamel tabletops, allowing the tabletop to quickly reach and stabilize at the preset temperature. Simultaneously, the cast iron layer can evenly diffuse heat across the entire enamel layer surface, preventing localized overheating and ensuring a comfortable body temperature. Attached Figure Description

[0009] The present invention will be further explained below with reference to the accompanying drawings and embodiments: Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a bottom view of the three-dimensional structure of this utility model; Figure 3 yes Figure 2A magnified view of part A in the middle; Figure 4 This is a partial structural diagram of the blades when they are closed. Figure 5 yes Figure 4 A magnified view of part B in the middle section; Figure 6 This is a partial structural diagram of the flip-up blades when they are open; Figure 7 yes Figure 6 A magnified view of part C in the middle; Figure 8 This is a diagram of the layered structure of an enamel tabletop.

[0010] Explanation of reference numerals in the attached figures: 1. Enameled tabletop; 101. Enamel layer; 102. Cast iron layer; 103. Graphene heating film; 2. Table legs; 3. Drying rack; 4. Blocking frame; 401. Guide groove; 5. Connecting frame; 501. Crossbar; 6. Flipping end plate; 601. Rotating shaft; 602. Flipping blade; 7. Limiting mechanism; 701. Limiting seat; 702. Spring; 703. Sliding block. Detailed Implementation

[0011] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0012] This utility model provides a general utility model through improvements. The technical solution of this utility model is as follows: like Figures 1-8 As shown, a heated enamel tabletop is presented. The enamel tabletop 1 is the core carrier of this device, and a graphene heating film 103 is pre-embedded inside as a heat source. On the lower surface of the enamel tabletop 1, table legs 2 for support, a drying rack 3 for hanging items, and a rectangular blocking frame 4 with closed sides are fixedly connected by welding, screwing, or integral casting.

[0013] Each drying rack 3 is typically formed by bending a metal rod and has two legs, the upper ends of which are firmly connected to the lower surface of the enamel tabletop 1. The baffle frame 4 is located in the middle area of ​​all these legs, thereby defining a relatively independent drying space under the tabletop and inside the baffle frame 4.

[0014] The key feature of this embodiment is the inclusion of movable flip-up end plates 6. Multiple flip-up end plates 6 are provided, evenly divided into two groups. Each group of flip-up end plates 6 is rotatably connected to a pair of opposing inner long sides of the blocking frame 4 via its respective pivot 601. Two flip-up blades 602 are fixedly connected circumferentially to each pivot 601. When all flip-up blades 602 are rotated to a horizontal position, they completely cover and close the opening at the bottom of the blocking frame 4.

[0015] To achieve synchronous operation, all the flipping end plates 6 in each group are rotatably connected to a connecting frame 5. This connecting frame 5 is a long linkage rod that connects directly to each flipping end plate 6 in the same group through a shaft hole. In this way, when the operator drives the connecting frame 5, all the flipping end plates 6 on the same side can be synchronously rotated around their respective rotating shafts 601, realizing the synchronous opening and closing of all the flipping blades 602.

[0016] For ease of operation, a long guide groove 401 is provided on the side wall of the blocking frame 4. One end of the connecting frame 5 passes through the guide groove 401 and extends to the outside of the blocking frame 4. A crossbar 501 is fixedly connected to the end of all the connecting frames 5 extending out of the blocking frame 4. This crossbar 501 connects all the connecting frames 5 into a whole frame. The user can control the rotation of all the flipping end plates 6 synchronously through the connecting frames 5 by simply moving this crossbar 501 up and down with one hand, thereby easily adjusting the opening and closing angle of all the flipping blades 602.

[0017] Furthermore, in order to stabilize the flipping blade 602 at the required opening and closing angle, a limiting mechanism 7 is fixedly installed on the outside of the side wall of the blocking frame 4, which has the guide groove 401.

[0018] The limiting mechanism 7 mainly includes a limiting seat 701 fixed to the side wall of the blocking frame 4 by screws. A groove is machined into the lower part of the limiting seat 701, and a sliding block 703 is assembled in the groove and can slide back and forth along it. A spring 702 is compressed between the sliding block 703 and the inner wall of the limiting seat 701, providing the sliding block 703 with an elastic force that always pushes it outwards.

[0019] When the user pushes the crossbar 501 along the guide groove 401 to the preset position, the connecting bracket 5 presses against the guide ramp of the sliding block 703, forcing the sliding block 703 to retract inward against the elastic force of the spring 702. Once the connecting bracket 5 has completely passed the top of the sliding block 703, the sliding block 703 quickly pops out under the restoring force of the spring 702, returning to its initial position, thus locking the crossbar 501 and preventing it from moving accidentally due to gravity or slight external force, achieving reliable movement limitation. When adjustment is needed, the user simply presses down on the sliding block 703 to disengage it.

[0020] Furthermore, the enamel tabletop 1 is a functional multi-layered composite structure, which forms the physical basis for achieving rapid and uniform heating. From the outside in, it consists of: an enamel layer 101: as the outermost surface, it provides an aesthetically pleasing, wear-resistant, corrosion-resistant, easy-to-clean, and comfortable interface for human contact; a cast iron layer 102: as the core substrate, it primarily serves as a supporting structure and provides heat distribution and storage. It can rapidly absorb and evenly diffuse the heat generated by the graphene heating film 103 across the entire tabletop, preventing localized overheating and maintaining temperature stability through its thermal inertia; and the graphene heating film 103: as a heat source, it is tightly laminated or bonded to the inner side of the cast iron layer 102. This design fully utilizes the ultra-high thermal conductivity and planar heating characteristics of graphene, enabling extremely rapid heat transfer to the cast iron layer 102, effectively solving the problem of slow heating caused by the high thermal inertia of traditional pure cast iron tabletops.

[0021] Furthermore, it also includes a temperature control unit (not shown in the figure, which can be integrated into the edge of the table). This unit is electrically connected to the graphene heating film 103 via insulated wires, forming a complete control system.

[0022] The core of the temperature control unit consists of a microprocessor and a temperature sensor. The temperature sensor monitors the temperature of the tabletop in real time and feeds the signal back to the microprocessor.

[0023] The microprocessor internally stores a control program configured to continuously receive signals from a temperature sensor and compare the real-time temperature value with the target temperature value set by the user via buttons. Then, the microprocessor employs an advanced PID control algorithm to dynamically and precisely adjust the current output to the graphene heating film 103. This closed-loop control minimizes temperature overshoot and fluctuations, enabling the surface temperature of the enamel tabletop 1 to quickly reach and stabilize at the user-set ideal value, achieving intelligent, comfortable, and energy-efficient temperature management.

[0024] The foregoing description enables those skilled in the art to implement or use this invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this invention. Therefore, this invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heated enamel tabletop, comprising an enamel tabletop (1), wherein a graphene heating film (103) is disposed within the enamel tabletop (1), and table legs (2), a drying rack (3), and a surrounding blocking frame (4) are fixedly connected to its lower surface; each of the drying racks (3) has two legs fixedly connected to the lower surface of the enamel tabletop (1), and the blocking frame (4) is disposed in the middle of these legs, characterized in that: It also includes multiple flip end plates (6), which are divided into two groups and are rotatably connected to a pair of opposing inner sidewalls of the blocking frame (4) via a rotating shaft (601). A flip blade (602) is fixedly connected to the rotating shaft (601) in the circumferential direction. All the flip blades (602) can completely cover the opening of the blocking frame (4) when closed. Each group of flip end plates (6) is also rotatably connected to a connecting frame (5). The connecting frame (5) is configured to synchronously drive all the flip end plates (6) in the same group to rotate around its rotating shaft (601). A guide groove (401) is provided on the sidewall of the blocking frame (4). One end of the connecting frame (5) passes through the guide groove (401) and extends to the outside of the blocking frame (4). A crossbar (501) is fixedly connected to its end. The crossbar (501) connects the multiple connecting frames (5) in the same group into one unit.

2. The enamel tabletop with heating function according to claim 1, characterized in that: The blocking frame (4) has a limiting mechanism (7) fixedly installed on the outside of the side wall of the guide groove (401); the limiting mechanism (7) includes a limiting seat (701) fixedly installed on the side wall of the blocking frame (4), and a sliding block (703) is slidably assembled on the lower part of the limiting seat (701), and the sliding block (703) is elastically connected to the limiting seat (701) through a spring (702). The limiting mechanism (7) is used to limit the movement of the connecting frame (5).

3. The enamel tabletop with heating function according to claim 1, characterized in that: The enamel tabletop (1) has a multi-layer composite structure, which includes, from the outside to the inside, an enamel layer (101) as the surface, a cast iron layer (102) as the substrate, and a graphene heating film (103) as the heat source.

4. The enamel tabletop with heating function according to claim 1, characterized in that: It also includes a temperature control unit electrically connected to the graphene heating film (103); the temperature control unit includes a microprocessor and a temperature sensor, the microprocessor being configured to receive the signal from the temperature sensor and, based on a preset temperature curve or user-defined value, perform PID regulation on the current flowing through the graphene heating film (103) to achieve closed-loop control of the surface temperature of the enamel tabletop (1).

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