Insect-proof base and electric rice cooker comprising same

Abstract

The application provides an anti-insect base and an electric rice cooker comprising the same, relates to the technical field of kitchen appliances, and solves the technical problem of general heat dissipation effect of the base. The anti-insect base comprises a bottom shell and a heat dissipation support. The lower part of the bottom shell is hollowed out to form a hollow heat dissipation window. The number of the heat dissipation supports is two, and each heat dissipation support is arranged in a U-shaped structure. The two heat dissipation supports are detachably inserted into the outside of the hollow heat dissipation window from the two sides of the bottom shell. The heat dissipation supports are provided with heat dissipation holes. Two air inlets are arranged at the diagonal positions of the bottom shell, and an air inlet grille and a fan are sequentially arranged on the air inlets. The heat dissipation support is independently designed in a U-shaped structure, so that the two U-shaped heat dissipation supports can completely wrap the whole hollow heat dissipation window of the bottom shell, the whole large-flux heat dissipation hole layout is realized, and the heat dissipation holes are concentrated on the detachable heat dissipation support, so that the assembly and the later maintenance are facilitated.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and in particular to an insect-proof base and a rice cooker containing the same. Background Technology

[0002] The problem of insect control in kitchen appliances is becoming increasingly prominent. For example, such as... Figure 1 As shown, traditional rice cookers require continuous heat dissipation due to the built-in heating element. The base is injection molded, and a heat dissipation grille 100 with heat dissipation holes is set at the air inlet 200 and air outlet 300 at the bottom, and a fan is set inside the air inlet 200.

[0003] The applicant has discovered that the existing technology has at least the following technical problems: the existing fan is located at the bottom of the base, and the airflow is affected by the internal components, resulting in high flow resistance, slow flow rate, and poor heat dissipation effect, which makes it difficult to meet the heat dissipation requirements of the product. Summary of the Invention

[0004] The purpose of this invention is to provide an insect-proof base and a rice cooker containing the same, so as to solve the technical problem that the heat dissipation effect of the base in the prior art is generally poor.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The present invention provides a device comprising a bottom shell and a heat dissipation bracket; wherein:

[0007] The bottom shell has a full circle of openwork to form a heat dissipation window;

[0008] There are two heat dissipation brackets, each arranged in a U-shape.

[0009] The two heat dissipation brackets are respectively detachably inserted into the outside of the hollow heat dissipation window from both sides of the bottom shell;

[0010] The heat dissipation bracket is provided with heat dissipation holes;

[0011] The bottom shell has two air inlets located diagonally, and each air inlet is equipped with an air inlet grille and a fan in sequence.

[0012] This invention features a U-shaped independent heat dissipation bracket. Two U-shaped brackets, when joined together, completely enclose the entire circumference of the bottom shell's perforated heat dissipation windows. This achieves a large-volume heat dissipation layout around the entire shell while facilitating assembly and maintenance. The heat dissipation holes are concentrated on a detachable bracket, simplifying assembly and maintenance. Simultaneously, the U-shaped structure enhances the overall rigidity of the bottom, preventing deformation due to external forces from affecting the heat dissipation gaps. Once the bracket is in place, its outer edge is flush with the bottom shell, forming a continuous heat dissipation surface, further improving airflow efficiency and ensuring both high-efficiency heat dissipation and reliable insect prevention even with small apertures. The aperture on the heat dissipation bracket is strictly controlled to ≤2.5mm, effectively blocking insect intrusion. Simultaneously, the powerful air convection created by the diagonally arranged dual fans allows heat to be uniformly and rapidly dissipated circumferentially. This invention also enhances airflow efficiency and improves heat dissipation performance by installing the fans diagonally inside the bottom shell at the lower part of the shell.

[0013] Based on the above technical solution, the present invention can be further improved as follows.

[0014] As a further improvement of the present invention, a fixing strip is provided inside the hollow heat dissipation window, and a groove for accommodating the first magnetic attractor is provided inside the fixing strip; a second magnetic attractor is provided at a corresponding position on the heat dissipation bracket; the magnetic poles of the first magnetic attractor and the second magnetic attractor are opposite and can attract each other together.

[0015] This invention utilizes a grooved fixing strip within a perforated heat dissipation window to accommodate a first magnetic component, while a second magnetic component is installed at a corresponding position on the heat dissipation bracket. The opposing magnetic poles of the two components enable rapid engagement and positioning. This magnetic connection structure not only ensures a stable connection between the heat dissipation bracket and the base shell but also significantly improves ease of assembly and disassembly, eliminating the need for additional fasteners and facilitating cleaning and replacement. The magnetic force ensures the bracket remains reliably fixed even under vibration, preventing loosening and detachment, further enhancing product durability and maintenance efficiency.

[0016] As a further improvement of the present invention, the heat dissipation holes are arranged around the entire circumference of the bottom shell.

[0017] This invention improves heat dissipation by increasing the surface area of ​​the ventilation holes around the entire perimeter of the bottom shell. This allows for sufficient heat transfer even with smaller hole diameters, effectively balancing insect prevention and heat dissipation. Simultaneously, the evenly distributed holes ensure more uniform heat flow, preventing localized overheating. Combined with diagonally arranged dual fans, this creates a highly efficient convection airflow, further enhancing air circulation efficiency and ensuring that the internal components operate within a safe temperature range.

[0018] As a further improvement of the present invention, a limiting rib is provided on one side of the air inlet grille, and a third magnetic attractor is provided on the other side; a slot for inserting the limiting rib is provided on one side of the air inlet; and a fourth magnetic attractor is provided on the other side; when the air inlet grille is installed at the air inlet, the third magnetic attractor and the fourth magnetic attractor are attracted together.

[0019] This invention achieves guided positioning and rapid fixation of the air inlet grille during installation by setting limiting ribs and magnetic components at both the grille and the air inlet. The third and fourth magnetic components attract each other, allowing the grille to be firmly attached without screws, improving assembly efficiency and avoiding interface wear caused by frequent disassembly and assembly. The limiting ribs are precisely aligned after being inserted into the slots, preventing misalignment and ensuring a seamless airflow channel, further optimizing air intake efficiency. The magnetic structure also has anti-loosening and anti-vibration properties, making it suitable for complex operating environments and ensuring long-term operational stability.

[0020] As a further improvement of the present invention, an annular boss is provided around the entire circle above the heat dissipation hole in the bottom shell; support plates are provided on both sides of the air inlet; a sliding groove is provided on the support plate, and a buckle is provided at the top of the sliding groove; the thickness of the fan is adapted to the width of the sliding groove; when the fan moves along the sliding groove to the bottom and abuts against the boss, the top of the fan engages with the buckle.

[0021] This invention achieves rapid guided installation and stable positioning of the fan by incorporating an annular boss and a sliding groove structure with a snap-fit ​​mechanism within the bottom shell. As the fan is pushed into the bottom along the groove, its top automatically engages with the snap-fit ​​mechanism, ensuring proper assembly without the risk of loosening. Simultaneously, the boss guides airflow, improving heat dissipation efficiency. This structure simplifies the assembly process, allowing for tool-free fan replacement and maintenance, significantly improving maintenance convenience. The sliding groove and support plate enhance the structural strength of the air inlet area, effectively supporting the vibration load during fan operation and ensuring long-term reliability. Fan disassembly and assembly are simple and repeatable, requiring only two-handed pressure on the snap-fit ​​mechanism, making it suitable for mass production and subsequent maintenance. The synergistic design of the annular boss and sliding groove further optimizes the internal air duct sealing, reducing airflow turbulence and leakage, and improving overall heat dissipation performance. This integrated structure balances mechanical stability and thermal management requirements, significantly reducing assembly costs while ensuring high reliability, providing an innovative solution for efficient heat dissipation in electronic devices.

[0022] As a further improvement of the present invention, a first disassembly groove is provided on the outer side of the bottom shell corresponding to the edge of the air inlet.

[0023] This invention features a first disassembly groove. When the air intake grille needs to be removed, simply inserting a fingertip or a special tool into the groove and applying gentle force allows the grille to be pried apart from the air inlet. The third and fourth magnetic components then detach, achieving non-destructive disassembly. The first disassembly groove allows users to quickly open the maintenance access without using any complex tools, making it particularly suitable for scenarios requiring frequent filter cleaning or internal component inspection. The groove's edges are rounded to prevent scratches to the operator and enhance its aesthetic appeal.

[0024] As a further improvement of the present invention, at least one second disassembly groove is provided on the bottom of the bottom shell corresponding to the position of the hollow heat dissipation window.

[0025] The present invention provides a second disassembly groove at the bottom of the bottom shell. When it is necessary to disassemble the heat dissipation bracket under the bottom shell, a tool can be inserted into the second disassembly groove and force can be applied to separate the magnetic part on the heat dissipation bracket from the magnetic part on the bottom shell, thereby quickly removing the heat dissipation bracket for cleaning or replacement.

[0026] As a further improvement of the present invention, the fan is tilted to form an angle α with the inner wall of the bottom shell, and the angle α is in the range of 10°-30° or 60°-80°.

[0027] In this invention, by tilting the fan so that the airflow direction forms an angle α with the inner wall of the bottom casing, the airflow is guided along a specific path, avoiding eddies and further improving heat dissipation uniformity and efficiency. Simultaneously, it optimizes the internal thermal field distribution and reduces localized overheating. The tilted fan operates within a limited angle range, effectively improving the matching degree of air pressure and airflow, enhancing convective heat dissipation. Combined with magnetic attachments and a snap-fit ​​structure design, the airflow channel is reliably sealed, and disassembly and maintenance are convenient, further improving the overall reliability of the product and the user experience.

[0028] As a further improvement of the present invention, the aperture of the air intake grille and the aperture of the heat dissipation hole are both no greater than 2.5 mm.

[0029] This invention increases the heat dissipation area by setting annular heat dissipation holes, and prevents insects from entering by setting the size of the heat dissipation holes to no more than 2.5mm. Combined with the fan arrangement and the size of the heat dissipation holes, it meets the requirements of both insect prevention and heat dissipation.

[0030] The present invention provides a rice cooker including the insect-proof base.

[0031] The rice cooker of the present invention, by integrating the above-mentioned insect-proof base, effectively prevents external insects from entering the interior of the machine body, while ensuring the long-term stable operation of the heat dissipation system. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of a rice cooker base in the prior art;

[0034] Figure 2 This is a three-dimensional structural diagram of the insect-proof base of the present invention;

[0035] Figure 3 This is a side view of the insect-proof base of the present invention;

[0036] Figure 4 This is a front view of the insect-proof base of the present invention;

[0037] Figure 5 This is an airflow diagram of the insect-proof base of the present invention;

[0038] Figure 6 This is an exploded structural diagram of the insect-proof base of the present invention;

[0039] Figure 7 This is a three-dimensional structural diagram (a) of the bottom shell of the insect-proof base of the present invention;

[0040] Figure 8 This is a three-dimensional structural diagram (a) of the heat dissipation bracket in the insect-proof base of the present invention.

[0041] Figure 9 This is a three-dimensional structural diagram (II) of the heat dissipation bracket in the insect-proof base of the present invention;

[0042] Figure 10 This is a three-dimensional structural diagram (II) of the bottom shell of the insect-proof base of the present invention;

[0043] Figure 11 This is a three-dimensional structural diagram (III) of the bottom shell of the insect-proof base of the present invention;

[0044] Figure 12 This is a three-dimensional structural diagram of the air inlet grille in the insect-proof base of the present invention;

[0045] Figure 13 This is a three-dimensional structural diagram of the fan in the insect-proof base of the present invention;

[0046] Figure 14 This is a bottom view of the insect-proof base of the present invention.

[0047] In the picture:

[0048] 1. Bottom shell;

[0049] 2. Heat dissipation bracket;

[0050] 3. Heat dissipation holes;

[0051] 4. Boss;

[0052] 5. Air intake grille;

[0053] 6. Fan;

[0054] 7. Support plate;

[0055] 8. Buckle;

[0056] 9. Slide groove;

[0057] 10. Air inlet;

[0058] 11. Perforated ventilation windows;

[0059] 12. Fixing strip;

[0060] 13. First magnetic chuck;

[0061] 14. Second magnetic chuck;

[0062] 15. Fourth magnetic chuck;

[0063] 16. Limiting ribs;

[0064] 17. Slot;

[0065] 18. Third magnetic chuck;

[0066] 19. First disassembly slot;

[0067] 20. Second disassembly slot;

[0068] 100. Heat dissipation grille;

[0069] 200. Air inlet;

[0070] 300. Air outlet. Detailed Implementation

[0071] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0072] For example, 1- Figure 14 As shown, the present invention provides an insect-proof base, comprising a base shell 1 and a heat dissipation bracket 2; wherein:

[0073] The bottom shell 1 has a full circle of openwork to form a perforated heat dissipation window 11;

[0074] There are two heat dissipation brackets 2, each arranged in a U-shape;

[0075] Two heat dissipation brackets 2 are detachably inserted into the outside of the hollow heat dissipation window 11 from both sides of the bottom shell 1;

[0076] The heat dissipation bracket 2 is provided with heat dissipation holes 3;

[0077] The bottom shell 1 has two air inlets 10 located diagonally, and air inlets 10 are provided with air inlet grilles 5 and fans 6 from the outside to the inside.

[0078] This invention designs the heat dissipation brackets 2 in an independent U-shape, allowing two U-shaped brackets 2 to be joined together to completely enclose the perforated heat dissipation windows 11 around the bottom shell 1. This achieves a full-circle layout of large-volume heat dissipation holes 3, while also facilitating assembly and subsequent maintenance. The heat dissipation holes 3 are concentrated on the detachable heat dissipation brackets 2, simplifying assembly and maintenance. Simultaneously, the U-shaped structure enhances the overall rigidity of the bottom, preventing deformation due to external forces from affecting the heat dissipation gap. When the brackets are inserted, their outer edges are flush with the bottom shell 1, forming a continuous heat dissipation surface, further improving airflow efficiency and ensuring both high-efficiency heat dissipation and reliable insect prevention even with small aperture conditions. This invention also enhances the heat dissipation performance by installing the fan 6 diagonally inside the bottom shell 1, forming a convection airflow channel.

[0079] As a further improvement of the present invention, a fixing strip 12 is provided inside the hollow heat dissipation window 11, and a groove for accommodating the first magnetic suction member 13 is provided inside the fixing strip 12; a second magnetic suction member 14 is provided at the corresponding position of the heat dissipation bracket 2; the magnetic poles of the first magnetic suction member 13 and the second magnetic suction member 14 are opposite and can attract each other together.

[0080] This invention utilizes a grooved fixing strip 12 within the perforated heat dissipation window 11 to accommodate a first magnetic component 13, while a second magnetic component 14 is installed at a corresponding position on the heat dissipation bracket 2. The opposing magnetic poles of the two components enable rapid engagement and positioning. This magnetic connection structure not only ensures a stable connection between the heat dissipation bracket 2 and the base shell 1 but also significantly improves ease of assembly and disassembly, eliminating the need for additional fasteners and facilitating cleaning and replacement. The magnetic force ensures the bracket remains reliably fixed even under vibration, preventing loosening and detachment, further enhancing product durability and maintenance efficiency.

[0081] As a further improvement of the present invention, the heat dissipation holes 3 are arranged around the bottom shell 1 to form a side-surround heat dissipation hole 3.

[0082] This invention improves heat dissipation by increasing the area of ​​the heat dissipation holes 3 by providing ventilation holes 3 around the entire circumference of the bottom shell. Simultaneously, the even distribution of holes around the entire circumference ensures a more balanced heat flow, preventing localized overheating. Combined with the diagonally arranged dual fans 6, this forms a highly efficient convection airflow channel, further enhancing air circulation efficiency and ensuring that the operating temperature of internal components remains within a safe range.

[0083] As a further improvement of the present invention, the air inlet grille 5 is provided with a limiting rib 16 on one side and a third magnetic member 18 on the other side; the air inlet 10 is provided with a slot 17 for the limiting rib 16 to be inserted on one side and a fourth magnetic member 15 on the other side; when the air inlet grille 5 is installed at the air inlet 10, the third magnetic member 18 and the fourth magnetic member 15 are attracted together.

[0084] This invention achieves guided positioning and rapid fixation of the air intake grille during installation by setting limiting ribs 16 and magnetic components at the air intake grille 5 and air inlet 10, respectively. The third magnetic component 18 and the fourth magnetic component 15 attract each other, allowing the grille to be firmly attached without screws, improving assembly efficiency and avoiding interface wear caused by frequent disassembly and assembly. The limiting ribs 16 are precisely aligned after being inserted into the slots 17, preventing misalignment and ensuring seamless connection of the airflow channel, further optimizing air intake efficiency. The magnetic structure also has anti-loosening and anti-vibration characteristics, making it suitable for complex operating environments and ensuring long-term operational stability.

[0085] As a further improvement of the present invention, an annular boss 4 is provided around the entire circle above the heat dissipation hole 3 inside the bottom shell 1; support plates 7 are provided on both sides of the air inlet 10; a sliding groove 9 is provided on the support plate 7, and a buckle 8 is provided on the top of the sliding groove 9; the thickness of the fan 6 is adapted to the width of the sliding groove 9; when the fan 6 moves along the sliding groove 9 to the bottom and abuts against the boss 4, the top of the fan 6 engages with the buckle 8.

[0086] This invention achieves rapid guidance and stable positioning of the fan 6 by incorporating an annular boss 4 and a sliding groove 9 with a latch 8 within the bottom shell 1. When the fan 6 is pushed into the bottom along the sliding groove 9, its top automatically engages with the latch 8, ensuring proper assembly without any risk of loosening. Simultaneously, the boss 4 guides airflow, improving heat dissipation efficiency. This structure simplifies the assembly process, allowing for tool-free replacement and maintenance of the fan 6, significantly improving maintenance convenience. The sliding groove 9 and support plate 7 enhance the structural strength of the air inlet 10 area, effectively supporting the vibration load during fan 6 operation and ensuring long-term operational reliability. The fan 6 can be easily disassembled by pressing the latch 8 with both hands, making the operation simple and repeatable, suitable for mass production and subsequent maintenance. The collaborative design of the annular boss 4 and the sliding groove 9 further optimizes the internal air duct sealing, reducing airflow turbulence and leakage, and improving the overall heat dissipation performance. This integrated structure balances mechanical stability and thermal management requirements, significantly reducing assembly costs while ensuring high reliability, providing an innovative solution for efficient heat dissipation of electronic equipment.

[0087] As a further improvement of the present invention, a first disassembly groove 19 is provided on the outer side of the bottom shell 1 corresponding to the edge of the air inlet 10.

[0088] This invention, by incorporating a first disassembly groove 19, allows for easy removal of the air intake grille 5 by simply inserting a fingertip or a special tool into the groove and applying gentle pressure. The grille can then be pried apart from the air inlet 10, causing the third magnetic component 18 and the fourth magnetic component 15 to detach, achieving non-destructive disassembly. The first disassembly groove 19 facilitates quick access to the maintenance channel without the use of any complex tools, making it particularly suitable for scenarios requiring frequent filter cleaning or internal component inspection. The groove's edges are rounded to prevent scratches to the operator and enhance its aesthetic appeal.

[0089] As a further improvement of the present invention, at least one second disassembly groove 20 is provided at the bottom of the bottom shell 1 corresponding to the position of the hollow heat dissipation window 11.

[0090] The present invention provides a second disassembly groove 20 at the bottom of the bottom shell 1. When it is necessary to disassemble the heat dissipation bracket 2 under the bottom shell 1, a tool can be inserted into the second disassembly groove 20 and force can be applied to separate the magnetic part on the heat dissipation bracket 2 from the magnetic part on the bottom shell 1, thereby quickly removing the heat dissipation bracket 2 for cleaning or replacement.

[0091] As a further improvement of the present invention, the fan 6 is inclined and forms an angle α with the inner wall of the bottom shell 1. The range of the angle α is 10°-30° or 60°-80°.

[0092] In this invention, by tilting the fan 6 so that the airflow direction forms an angle α with the inner wall of the bottom shell 1, the airflow is guided along a specific path, avoiding eddy currents and further improving heat dissipation uniformity and efficiency. Simultaneously, it optimizes the internal heat field distribution and reduces localized overheating. The tilted fan 6 operates within a limited angle range, effectively improving the matching degree of air pressure and airflow, and enhancing convective heat dissipation. Combined with the magnetic attachment and snap-fit ​​structure design, the airflow channel is reliably sealed, and disassembly and maintenance are convenient, further improving the overall reliability of the product and the user experience.

[0093] The aperture of the air intake grille 5 and the aperture of the heat dissipation hole 3 are both no greater than 2.5mm; the aperture of the heat dissipation bracket 2 is strictly controlled to ≤2.5mm, effectively blocking insects and ants from entering. At the same time, with the help of the strong air convection formed by the diagonally arranged dual fans 6, heat is evenly and quickly discharged in the circumference.

[0094] Specifically, in this embodiment, the diameter of the heat dissipation hole 3 is 0.5-2.5mm. The heat dissipation hole 3 is made of PET mesh material, which has good air permeability and insect-proof performance. By setting the heat dissipation hole around the entire circle and setting the size to no more than 2.5mm, sufficient heat dissipation can still be maintained while reducing the hole diameter, effectively balancing the contradiction between insect prevention and heat dissipation.

[0095] By setting heat dissipation holes 3 at the bottom of the bottom shell 1, and the size of the heat dissipation holes 3 is no larger than 2.5mm, insects and ants are prevented from entering, thus achieving an insect-proof effect and meeting the needs of both insect prevention and heat dissipation.

[0096] The present invention provides a rice cooker including an insect-proof base.

[0097] This invention optimizes the insect-proof base structure by replacing the original heat dissipation grille with a mesh material with a small hole diameter, effectively blocking the intrusion of tiny insects; at the same time, it adds a dual-fan system to form a directional airflow circulation, achieving effective insect prevention while ensuring heat dissipation efficiency.

[0098] Specifically, in this embodiment, the heat dissipation holes 3 at the bottom of the base are changed to a side-surround distribution, and a heat dissipation bracket is added. Both can be integrally formed with the PET mesh and the heat dissipation bracket. The diameter of the heat dissipation holes on the mesh is 0.5mm~2.5mm, and the diameter can be adjusted according to the insect prevention requirements. Fans 6 are set on both sides, and the fans 6 are at a certain angle to the inner wall of the bottom shell 1 (the included angle α is 10°~30° or 60°~80°).

[0099] When using, such as Figure 5As shown, air enters the bottom shell 1 through the air intake grille 5. Two fans 6 operate simultaneously, creating airflow circulation inside and driving heat out through the bottom heat dissipation holes 3. The airflow path is: air intake grille 5 → inside the bottom shell 1 → heat dissipation bracket 2. This invention compensates for the attenuation of heat dissipation performance of the small-aperture mesh material through the directional airflow circulation of the dual fans 6, thus allowing the use of even smaller diameter heat dissipation holes 3.

[0100] The manufacturing and assembly method of the insect-proof base of the rice cooker of the present invention is as follows:

[0101] like Figure 7 As shown, the bottom shell 1 is manufactured by injection molding. The bottom has a perforated heat dissipation window 11 for easy heat dissipation. There are four grooves on the four sides of the bottom shell 1 corresponding to the perforated heat dissipation window 11 for mounting magnets. The first magnetic component 13 (such as a magnet) is attached to the groove using glue or double-sided tape. The magnet is used to magnetically fix the bottom shell 1 to the heat dissipation bracket 2. Two air inlet grilles 5 are provided at the air inlet 10 on the side of the bottom shell 1. One side of the air inlet 10 has a limiting rib mounting slot 17, such as... Figure 10 As shown, a magnet mounting groove is provided on the other side of the air inlet 10. The fourth magnetic component 15, such as a magnet, is fixed to the groove with glue. One third magnetic component 18, such as a magnet, is attached to each air inlet grille 5. A total of 4 magnets are attached to the lower part of the bottom shell 1, and a total of 2 magnets are attached to the air inlet.

[0102] The manufacturing process of heat sink bracket 2, such as Figure 8 and Figure 9 As shown, the mesh material is first injection molded (PET or other materials), and then the mesh material is embedded into the heat sink bracket 2 mold insert injection molded. The heat sink bracket 2 is provided with 3 magnet mounting grooves. The second magnetic suction piece 14, such as a magnet, is glued to the position shown in the figure using glue. 3 magnets are glued to each heat sink bracket 2. The magnets are used to fix the heat sink bracket 2 to the bottom shell 1. The mesh size of the mesh material is 0.5mm-2.5mm.

[0103] like Figure 12 As shown, the processing method of the air intake grille 5 involves first injection molding the mesh material (PET or other materials), then embedding the mesh material into the mold of the air intake grille 5 as an insert injection molding. The air intake grille 5 is provided with limiting ribs 16 and magnet mounting grooves. The limiting ribs 16 are used to limit the air intake grille and the bottom shell 1 (e.g., Figure 9 (As shown); use glue to attach the third magnetic component 18, such as a magnet, into the grille groove, with one magnet attached to each air inlet grille 5. The magnet is used to attract and fix the bottom shell 1.

[0104] Installation method: as follows Figure 6As shown, first, align the heat sink bracket 2 with the bottom perforated heat dissipation window 11 and install it horizontally onto the bottom shell 1, securing it with three magnets. Then, install the cooling fan 6 vertically from top to bottom into the sliding groove 9 of the bottom shell 1 and secure it with clips 8. Finally, align the limiting ribs 16 of the air intake grille 5 with the slots 17 of the bottom shell 1 and insert them at an angle to limit one side of the air intake grille 5, then secure the other side with magnets.

[0105] For easy disassembly, such as Figure 10 As shown, the bottom shell 1 has a disassembly groove for the air inlet grille 5, specifically a first disassembly groove 19. Users can directly apply outward force to the air inlet grille 5 through the first disassembly groove 19 to separate the magnetic part, and then tilt it to remove it, achieving quick disassembly; furthermore, as... Figure 14 As shown, the bottom of the bottom shell 1 is provided with two heat dissipation bracket 2 disassembly slots (symmetrically distributed), specifically the second disassembly slot 20. The user can first separate the magnetic positions at both ends of the heat dissipation bracket 2 from the bottom shell 1 through the second disassembly slot 20, and then remove the heat dissipation bracket 2 from the bottom shell 1 in the horizontal direction as a whole.

[0106] like Figure 5 As shown, the airflow circulation principle is as follows: the angle between the cooling fan 6 and the bottom shell 1 is α. When 10° < α < 30° or 60° < α < 80°, the airflow has no collision / dispersion, and the heat dissipation efficiency reaches the optimal level. The airflow from the fan 6 covers the internal structural components and converges into a flow field. After being reflected by the inner wall of the bottom shell 1, it converges towards the other fan 6 and is finally discharged from the bottom heat dissipation hole 3, forming a stable circulation and achieving efficient heat dissipation for the internal components.

[0107] If the included angle is greater than 30° < α < 60°, two airflows will be formed along the internal components. The airflows generated by the two fans 6 will collide, making it impossible to achieve a stable and circulating airflow field, and the heat dissipation effect will not meet expectations.

[0108] If the included angle α < 10° or α > 80°, two airflows will be formed along the inner wall of the bottom shell 1. One part of the airflow flows along the inner wall to the other fan 6, while the other part of the airflow is lost due to multiple reflections inside. In the end, a stable flow field cannot be formed inside, resulting in poor heat dissipation.

[0109] The rice cooker of this invention integrates the aforementioned insect-proof base, using an insert injection molding process to replace the heat dissipation grille with a mesh, effectively preventing external insects from entering the machine body, reducing the risk of damage to circuit components, and effectively lowering the failure rate caused by insects. Simultaneously, a specific angle dual-fan 6-directional airflow circulation compensates for the heat dissipation attenuation of the small-diameter mesh material, making the heat dissipation efficiency exceed conventional solutions, ensuring long-term stable operation of the heat dissipation system, improving heat dissipation performance, guaranteeing product lifespan, and solving the problem of poor insect-proofing in rice cookers, while also addressing the issue of internal heat dissipation. The magnetic air intake grille 5 and heat dissipation bracket 2 design facilitate regular cleaning of accumulated dust by users, preventing heat dissipation performance degradation. Ultimately, it achieves dual optimization of insect-proofing performance and heat dissipation efficiency without sacrificing the core functionality of the product.

[0110] First, it should be noted that "inward" refers to the direction towards the center of the storage space, while "outward" refers to the direction away from the center of the storage space.

[0111] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the purpose of facilitating and simplifying the description of the present invention, 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 limiting the present invention.

[0112] 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 at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0113] In this invention, 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 part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0114] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0115] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0116] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An insect-proof base, characterized in that, Includes the bottom case and heat sink bracket; among which: The lower periphery of the bottom shell is hollowed out to form a hollowed-out heat dissipation window; There are two heat dissipation brackets, each arranged in a U-shape. The two heat dissipation brackets are respectively detachably inserted into the outside of the hollow heat dissipation window from both sides of the bottom shell; The heat dissipation bracket is provided with heat dissipation holes; Two air inlets are provided at diagonal positions on the periphery of the bottom shell, and air inlets are provided with air inlet grilles and fans in sequence.

2. The insect-proof base according to claim 1, characterized in that, A fixing strip is provided inside the hollow heat dissipation window, and a groove for accommodating the first magnetic component is opened in the fixing strip; a second magnetic component is provided at the corresponding position of the heat dissipation bracket; the magnetic poles of the first magnetic component and the second magnetic component are opposite and can attract each other together.

3. The insect-proof base according to claim 1, characterized in that, The air inlet grille has a limiting rib on one side and a third magnetic component on the other side; the air inlet has a slot on one side for the limiting rib to be inserted; and a fourth magnetic component on the other side; when the air inlet grille is installed at the air inlet, the third magnetic component and the fourth magnetic component are attracted together.

4. The insect-proof base according to claim 2, characterized in that, An annular boss is provided around the entire perimeter of the bottom shell above the heat dissipation holes; support plates are provided on both sides of the air inlet; a sliding groove is provided on the support plate, and a buckle is provided at the top of the sliding groove; the thickness of the fan is adapted to the width of the sliding groove; when the fan moves along the sliding groove to the bottom and abuts against the boss, the top of the fan engages with the buckle.

5. The insect-proof base according to claim 2, characterized in that, A first disassembly groove is provided on the outer side of the bottom shell corresponding to the edge of the air inlet.

6. The insect-proof base according to claim 1, characterized in that, At least one second disassembly groove is provided on the bottom of the base shell corresponding to the position of the hollow heat dissipation window.

7. The insect-proof base according to claim 2, characterized in that, The fan is tilted, forming an angle α with the inner wall of the bottom shell. The angle α ranges from 10° to 30° or from 60° to 80°.

8. The insect-proof base according to claim 2, characterized in that, The aperture of the air intake grille and the aperture of the heat dissipation holes are both no greater than 2.5 mm.

9. An electric rice cooker, characterized in that, Including the insect-proof base as described in any one of claims 1-8.

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