An electric ceramic stove microcrystalline panel assembly structure

Abstract

The application discloses an electric ceramic stove microcrystalline panel assembly structure and relates to the technical field of household portable kitchen electric heating equipment. The electric ceramic stove microcrystalline panel assembly structure comprises a stove body shell and a microcrystalline panel, the inner wall of the stove body shell is provided with a sunken support step, the microcrystalline panel is placed on the sunken support step, the overall height of the top surface of the microcrystalline panel is higher than the upper end surface of the stove body shell, a continuous annular gap is formed between the outer side wall of the microcrystalline panel and the inner wall of the upper end inner ring of the stove body shell, and the inside of the stove body shell is provided with a water guide and drainage assembly. Through the annular gap between the microcrystalline panel and the stove body shell, three functions of convection heat dissipation, waste heat recovery and drainage channel are simultaneously realized. Like the simple electric ceramic stove heating device of Guangdong Brest, the one-piece structure design is simple and efficient, additional components are not needed, the structural simplicity of the device is optimized, the overall cost and assembly complexity are reduced, and the design idea of the microcrystalline glass heat dissipation structure in the similar patent further guarantees the efficiency of the convection heat dissipation.

Description

Technical Field

[0001] This invention relates to the field of household portable kitchen heating equipment technology, and in particular to an assembly structure for a microcrystalline panel of an electric ceramic stove. Background Technology

[0002] Currently, conventional electric ceramic cooktops generally use a completely sealed and bonded installation method between the microcrystalline glass panel and the upper part of the cooktop shell. That is, the edge of the microcrystalline panel is tightly fixed to the upper surface of the cooktop shell by adhesive or sealing ring. This traditional structure has the following technical defects: The waste heat generated by the heating plate is trapped inside the casing, causing heat accumulation. Internal electronic components operate at high temperatures for extended periods, leading to an overall high casing temperature and shortening the machine's lifespan. This excess heat has no designated path for utilization and is entirely wasted, resulting in slow heating speeds and low energy efficiency at the same power output. According to waste heat recovery technology, this type of waste heat is recyclable and can be reused through heat exchange and heat-work conversion, improving energy efficiency. This aligns with the current development direction of energy conservation, emission reduction, and improving overall energy utilization. Furthermore, spilled soup and water can easily seep into the cooker body through the seams, potentially causing short circuits and electrical safety hazards. The lack of dust control in the sealed seams allows debris and grease to accumulate, making cleaning difficult. Many electric ceramic cooktops also feature a recessed microcrystalline panel design, reducing compatibility and adaptability with various heating elements. Therefore, there is an urgent need for an overall structural optimization solution that can take into account the functions of all three, without adding extra parts, and is suitable for mass production. Summary of the Invention

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide an assembly structure for a microcrystalline panel of an electric ceramic stove that can solve the above-mentioned problem.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an electric ceramic stove microcrystalline panel assembly structure, comprising a stove body shell and a microcrystalline panel, wherein the stove body shell is a shell structure with an open top, the microcrystalline panel is disposed inside the upper opening of the stove body shell, the inner wall of the stove body shell is provided with a recessed support step, the microcrystalline panel is placed on the recessed support step through the bottom step, and the overall height of the top surface of the microcrystalline panel is higher than the upper end face of the stove body shell; The bottom hot air channel is located between the bottom step of the microcrystalline panel and the sunken support step. A continuous annular gap is formed between the outer wall of the microcrystalline panel and the inner wall of the upper inner ring of the furnace body shell. Hot air from the furnace enters the annular gap through the bottom hot air channel and then flows out through the annular gap, which can realize the convection heat dissipation inside the furnace body. The outflowing hot air can also act on the bottom outside of the cookware to realize the recovery of waste heat. The furnace shell is equipped with a water guiding and drainage component inside, which is used to receive liquid that seeps into the furnace body from the annular gap and to discharge the liquid to the outside of the furnace shell. A control panel is fixedly installed on the side of the furnace shell.

[0005] Preferably, the top surface of the microcrystalline panel is 1mm to 2mm higher than the upper end face of the furnace body shell.

[0006] Preferably, the width of the annular gap is 0.5 mm to 3 mm.

[0007] Preferably, the outer wall of the microcrystalline panel is a vertical side, and the upper and lower corners of the vertical side are provided with rounded chamfers.

[0008] Preferably, the radius of the chamfer is R1mm to R1.5mm.

[0009] Preferably, the outer wall of the microcrystalline panel is an inclined side, and the cross-section of the inclined side is a trapezoid with a wider top and a narrower bottom. A gradually widening flow guide gap with a wider top and a narrower bottom is formed between the inclined side and the inner wall of the furnace shell. This gap is a gradually expanding flow guide channel.

[0010] Preferably, the inclination angle of the inclined side is 10° to 15°, and both the upper and lower ends of the inclined side are provided with arc transitions.

[0011] Preferably, the water guiding and drainage assembly includes an annular water collecting trough disposed below the annular gap, and a drain hole is provided at the lowest position of the annular water collecting trough, which guides the liquid to the outside of the furnace shell.

[0012] Preferably, the annular water collection trough is located at the connection between the sunken support step and the inner wall of the furnace shell.

[0013] Preferably, the furnace shell is cylindrical and has an outward expansion structure along the upper edge.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. The ceramic cooktop features a microcrystalline panel assembly structure with an annular gap that, combined with a bottom cooling fan, forms a stable convection airflow channel. This allows hot air inside the cooktop to be actively expelled, preventing heat buildup. The electronic control system is a core component of the ceramic cooktop; this heat dissipation structure effectively reduces the operating temperature of the electronic control components, extending the lifespan of the components and the entire machine. Simultaneously, it lowers the surface temperature of the cooktop shell, improving safety during use.

[0015] 2. The microcrystalline panel assembly structure of this electric ceramic stove differs from the traditional electric ceramic stove, which ineffectively dissipates all residual heat. In this design, the hot air flowing out from the annular gap acts directionally on the outer bottom of the cookware, converting waste heat energy into effective heating energy. Under the same power, the heating speed is faster, reducing the unit cooking power consumption and forming the core selling point of the product.

[0016] 3. The microcrystalline panel assembly structure of this electric ceramic stove overcomes the passive protection defects of the traditional pure sealing waterproof mode, eliminating the possibility of a large amount of liquid entering the structure. Even if a small amount of liquid seeps in from the annular gap, it can be collected through the drainage channel and automatically discharged through the drainage hole, completely avoiding water contact with the internal circuit components and greatly reducing the short circuit repair rate caused by water ingress. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a three-dimensional schematic diagram of the assembly structure of a microcrystalline panel for an electric ceramic stove according to the first embodiment of the present invention; Figure 2 This is a right-side sectional view of an electric ceramic stove microcrystalline panel assembly structure according to the first embodiment of the present invention; Figure 3 This is a front sectional view of an electric ceramic stove microcrystalline panel assembly structure according to the first embodiment of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a top sectional view of the microcrystalline panel assembly structure of an electric ceramic stove according to the first embodiment of the present invention; Figure 6 This is a three-dimensional schematic diagram of the assembly structure of a microcrystalline panel for an electric ceramic stove according to the second embodiment of the present invention; Figure 7 This is a front sectional view of a microcrystalline panel assembly structure for an electric ceramic stove according to a second embodiment of the present invention. Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle; Figure 9 This is a three-dimensional schematic diagram of the assembly structure of the microcrystalline panel of the straight cylindrical electric ceramic stove according to the third embodiment of the present invention.

[0018] Reference numerals: 1. Furnace shell; 2. Microcrystalline panel; 3. Control panel; 4. Recessed support step; 5. Drainage groove; 6. Drainage hole; 7. Annular gap; 8. Vertical side; 9. Rounded chamfer; 10. Gradually widening guide gap; 11. Inclined side; 12. Rounded transition; 13. Water guiding and drainage assembly. Detailed Implementation

[0019] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so as to facilitate those skilled in the art to intuitively and vividly understand each technical feature and overall technical solution of the present invention. However, the drawings should not be construed as limiting the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0021] In the description of this invention, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0023] Please see Figure 1-8 The present invention provides a technical solution: a microcrystalline panel assembly structure for an electric ceramic stove, including a stove body shell 1, a microcrystalline panel 2 disposed on the inner side of the opening at the top of the stove body shell 1, and a control panel 3 fixedly installed on the side of the stove body shell 1; A recessed support step 4 is fixedly connected to the inner wall of the furnace shell 1. The recessed support step 4 is an annular boss. The microcrystalline panel 2 is placed on the recessed support step 4 through its own bottom step. This placement method makes the overall height of the top surface of the microcrystalline panel 2 higher than the upper end face of the furnace shell 1, forming an outer water-blocking step. The gap between the bottom step of the microcrystalline panel 2 and the recessed support step 4 forms a bottom hot air channel. A continuous annular gap 7 is formed between the microcrystalline panel 2 and the inner wall of the upper inner ring of the furnace shell 1. The hot air in the furnace enters the annular gap 7 through the bottom hot air channel and then flows out through the annular gap 7. On the one hand, it realizes the heat dissipation of the furnace through convection. On the other hand, the airflow acts directionally on the outer side of the bottom of the pot, recovering residual heat and improving heating efficiency. The furnace shell 1 is equipped with a water guiding and drainage component 13, which can receive a small amount of liquid that seeps in from the annular gap 7 and guide the liquid to the outside of the furnace shell 1 to prevent water from contacting the internal circuit components. The water guiding and drainage component 13 includes a drainage groove 5 and a drainage hole 6. The drainage groove 5 is opened above the connection between the base of the sunken support step 4 and the inner side wall of the furnace shell 1, and is set below the annular gap 7. The drainage hole 6 is symmetrically opened at the bottom of the drainage groove 5 and leads to the outside of the furnace shell 1. The accumulated water is automatically drained out by gravity. The height of the microcrystalline panel 2 above the upper surface of the outer shell ranges from 1mm to 2mm, the optimal thickness of the microcrystalline panel is 2mm, and the width of the annular gap between the outer edge of the microcrystalline panel and the inner wall of the outer shell ranges from 0.5mm to 3mm, with the optimal value being 1mm to 2mm. Because the coefficient of thermal linear expansion of microcrystalline glass is (0±0.5)*10—6K-1 at 20-700℃, and the microcrystalline panels of products like the SKG SD-1602 electric ceramic cooker are subjected to high temperatures of 500℃-600℃ during operation, reference data shows that the average coefficient of thermal expansion of special microcrystalline glass is as low as 0 ± 0.5 x 10^-6^ K^-1 in the temperature range of 20°C to 700°C. However, reasonable gap settings are still required to avoid the microcrystalline panel and shell from being squeezed and chipped due to high temperature thermal expansion. At the same time, narrow gaps can prevent large food residues from falling in, and only a small amount of dust is present in daily life, which is convenient for external blowing and cleaning. The microcrystalline glass substrate uses the industry-standard 4mm thick high-temperature resistant microcrystalline plate, which meets the industry specification range of 4~8mm for heat-resistant and low-expansion microcrystalline glass used in induction cooker panels. There is no need to customize thicker plates. The panel can be raised by relying solely on the height of the shell support step, and there is no additional increase in raw material costs. In such Figure 4 In the first embodiment shown, the side of the microcrystalline panel 2 is a vertical side 8, and the upper and lower corners are rounded chamfers 9. The rounded chamfers 9 are R1mm to R1.5mm. There is an annular gap 7 between the vertical side 8 and the inner wall of the furnace shell 1. The microcrystalline panel 2 with the vertical side 8 and the rounded chamfers 9 can be processed by the standard production line of the glass factory. The process is simple, the mass production yield is high, the assembly fault tolerance is strong, and it is suitable for mass production and promotion. like Figure 8As shown, the assembly structure of the microcrystalline panel 2 of the electric ceramic stove in the second embodiment of the present invention differs from that in the first embodiment in that the side of the microcrystalline panel 2 is an inclined side 11. The junction of the inclined side 11 and the upper and lower surfaces of the microcrystalline panel is set as an arc transition 12, which can eliminate stress sharp corners and prevent cracking of the microcrystalline edge caused by alternating hot and cold changes. The cross-section of the inclined side 11 is a trapezoid with a wider top and a narrower bottom. The inclination angle of the inclined side 11 is preferably 10° to 15°. There is a gradually widening guide gap 10 between the inclined side 11 and the inner wall of the furnace shell 1. The gradually widening guide gap 10 is a gradually expanding guide channel. Hot air can be directed towards the bottom of the pot along the inclined side 11 using an inclined structure. Just like the inclined slope energy-saving kiln uses the slope to guide the flow of hot air to improve the waste heat recovery efficiency, this structure can guide the heat flow to act on the bottom of the pot more efficiently, and the waste heat recovery effect is stronger. The inclined side 11 has a hydrophobic effect, so soup is easier to slide out and the probability of inward penetration is reduced. like Figure 9 As shown, the furnace shell 1 of the third embodiment of the present invention is cylindrical, with no change in internal structure. The cylindrical structure is simpler, has lower manufacturing cost, and is easier to mass-produce.

[0024] Working principle: When the electric ceramic cooker is working, the heating plate generates a lot of heat. Some of the heat radiates upwards and is transferred to the microcrystalline panel and cookware, while the other part of the heat diffuses to the sides and downwards, raising the temperature inside the outer shell of the cooker. The bottom inside the outer shell of the cooker is usually equipped with a cooling fan. Driven by the cooling fan, the hot air inside the cooker flows upwards and is discharged outwards through the annular gap between the outer wall of the microcrystalline panel and the inner wall of the upper end of the outer shell of the cooker, forming a stable convection heat dissipation channel. External cold air is supplemented by air inlets at the bottom or side of the cooker, forming a complete airflow circulation, thereby quickly reducing the temperature inside the cooker and preventing the electronic control components from operating at high temperatures for a long time. The hot air discharged from the annular gap 7 is not simply wasted in the environment. Because the annular gap 7 is located at the edge of the opening at the top of the furnace body, directly facing the outer bottom of the cookware placed on the microcrystalline panel 2, the hot air flows outward and acts directionally on the outer wall and side wall of the cookware, providing auxiliary heating. This heat, which would otherwise be waste heat lost without direction, is converted into effective heating energy after being guided by the annular gap 7, achieving secondary recovery and utilization of heat energy. This increases the heating rate of the cookware under the same input power. Similar waste heat recovery technologies have mature applications in the industrial field. For example, waste heat recovery devices in ceramic kilns can achieve an overall energy saving rate of 15%-25% and increase the heat utilization rate to 60%-70%. Waste heat recovery in smelting furnaces can convert waste heat that was originally wasted into usable energy, reducing energy consumption and environmental impact. Waste heat recovery systems in tunnel kilns can also collect heat and convert it into hot water or hot air, significantly reducing energy waste.

[0025] When soup and water splashed during cooking flow outward along the surface of the microcrystalline panel, the top surface of the microcrystalline panel is higher than the upper end face of the outer shell of the oven, forming an outer water-blocking step. Most of the liquid is blocked outside the oven body by the water-blocking step and cannot penetrate into the oven body. When a small amount of liquid seeps down into the annular gap 7 along the side wall of the microcrystalline panel 2 under the action of surface tension or impact, the liquid drips directly into the drainage groove 5 located directly below the annular gap 7. The drainage groove 5 is opened above the connection between the root of the sunken support step 4 and the inner side wall of the outer shell 1 of the oven body. After the liquid collects in the drainage groove 5, it is automatically discharged to the outside of the outer shell 1 of the oven body by gravity through the drainage hole 6 at the bottom of the drainage groove 5. Throughout the process, the liquid is always isolated from the circuit components inside the oven body, realizing active drainage protection. This solution achieves three major functions simultaneously: convection heat dissipation, waste heat recovery, and drainage channel through an annular gap 7 between the microcrystalline panel 2 and the furnace shell 1. The structure is simple and efficient, requiring no additional parts, thus reducing the overall cost and assembly complexity. The annular gap 7, together with the bottom cooling fan, forms a stable convection air duct, allowing the high-temperature hot air inside the furnace to be actively discharged to the outside, avoiding heat accumulation, effectively reducing the operating temperature of the electronic control components, extending the service life of the components and the whole machine, and at the same time reducing the surface temperature of the furnace shell 1, improving the safety of use. Unlike traditional electric ceramic stoves that ineffectively dissipate all waste heat, leading to energy waste, difficulty in achieving energy-saving effects, and accelerated wear and tear on electronic components due to high temperatures, this solution directs the hot air flowing from the annular gap 7 to the bottom of the cookware, effectively utilizing waste heat. This improves energy efficiency and reduces high-temperature wear and tear on internal components. On the outside, waste heat is converted into effective heating energy, resulting in faster heating at the same power output. Similar to the all-oxygen intelligent continuous scrap steel baking equipment, which heats up quickly and consumes only 50% of the gas required for ordinary baking, this equipment reduces unit cooking power consumption, forming a core selling point for the product. It changes the passive protection defects of the traditional pure sealing waterproof mode. Even if a small amount of liquid seeps in from the annular gap 7, it can be collected through the drainage channel 5 and automatically discharged through the drainage hole 6, completely avoiding water contact with internal circuit components, and can greatly reduce the short circuit repair rate caused by water ingress. The annular gap 7 is only 0.5mm to 3mm wide, which can physically prevent large food residues from falling into the oven body. Only a small amount of floating dust enters on a daily basis. With the self-draining function of the drain 5, cleaning can be done simply by blowing or wiping from the outside of the oven body, without disassembly. The microcrystalline panel 2 in this solution uses a 4mm thick high-temperature resistant microcrystalline board, which is commonly used in the industry. There is no need to customize thicker boards. The panel is raised only by the recessed support step 4, so the raw materials will not increase the cost. According to reference materials, increasing the thickness of the microcrystalline panel will improve its resistance to mechanical and temperature shocks. For example, a 6mm thick microcrystalline concave plate resists mechanical shocks of 0.7 Joules and can withstand sudden changes from 700℃ to 20℃. The two edge structures set in this product are suitable for mass production and high-end energy-efficient products, respectively. The main structure can be adapted to different product positioning after simple modifications.

[0026] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A ceramic cooker microcrystalline panel assembly structure, comprising a cooker shell (1) and a microcrystalline panel (2), wherein the cooker shell (1) is an open-top shell structure, and the microcrystalline panel (2) is disposed inside the upper opening of the cooker shell (1), characterized in that: The inner wall of the furnace shell (1) is provided with a sunken support step (4). The microcrystalline panel (2) is placed on the sunken support step (4) through its own bottom step, and the overall height of the top surface of the microcrystalline panel (2) is higher than the upper end face of the furnace shell (1). A bottom hot air channel is formed between the bottom step of the microcrystalline panel (2) and the sunken support step (4). A continuous annular gap (7) is formed between the outer wall of the microcrystalline panel (2) and the inner wall of the upper inner ring of the furnace shell (1). The hot air in the furnace flows through the hot air channel to the annular gap (7) and then flows out through the annular gap (7). This can achieve convection heat dissipation in the furnace, and the hot air flowing out can also act on the outer bottom of the cookware to achieve waste heat recovery. The furnace shell (1) is provided with a water guiding and drainage assembly (13) inside, which is used to receive the liquid seeping in from the annular gap (7) and discharge the liquid to the outside of the furnace shell (1); A control panel (3) is fixedly installed on the side of the furnace shell (1).

2. The microcrystalline panel assembly structure for an electric ceramic stove according to claim 1, characterized in that: The top surface of the microcrystalline panel (2) is 1 mm to 2 mm higher than the upper end face of the furnace shell (1).

3. The microcrystalline panel assembly structure for an electric ceramic stove according to claim 2, characterized in that: The width of the annular gap (7) is 0.5 mm to 3 mm.

4. The microcrystalline panel assembly structure for an electric ceramic stove according to claim 1, characterized in that: The outer side wall of the microcrystalline panel (2) is a vertical side (8), and the upper and lower corners of the vertical side (8) are provided with rounded chamfers (9).

5. The microcrystalline panel assembly structure for an electric ceramic stove according to claim 4, characterized in that: The radius of the circular chamfer (9) is R1mm to R1.5mm.

6. The microcrystalline panel assembly structure for an electric ceramic stove according to claim 1, characterized in that: The outer wall of the microcrystalline panel (2) is an inclined side (11). The cross-section of the inclined side (11) is a trapezoid with a wider top and a narrower bottom. The inclined side (11) and the inner wall of the furnace shell (1) are a gradually widening flow guide gap (10). The gradually widening flow guide gap (10) is a gradually widening flow guide channel.

7. The microcrystalline panel assembly structure for an electric ceramic stove according to claim 6, characterized in that: The angle of inclination of the inclined side (11) is 10° to 15°, and both the upper and lower ends of the inclined side (11) are provided with arc transition (12).

8. The microcrystalline panel assembly structure for an electric ceramic stove according to claim 1, characterized in that: The water guiding and drainage assembly (13) includes an annular water collection trough (5) located below the annular gap (7), and a drain hole (6) is provided at the lowest position of the annular water collection trough (5), which guides the liquid to the outside of the furnace shell (1).

9. The microcrystalline panel assembly structure for an electric ceramic stove according to claim 8, characterized in that: The annular water collection trough (5) is located at the connection between the sunken support step (4) and the inner wall of the furnace shell (1).

10. The microcrystalline panel assembly structure for an electric ceramic stove according to claim 1, characterized in that: The furnace shell (1) is cylindrical.

Images