Induction cooker shell structure based on air blower cooling system

Abstract

The invention belongs to the technical field of household appliances, and discloses an induction cooker shell structure based on an air blower cooling system, the induction cooker shell structure comprises a main inner cavity defined by an induction cooker bottom shell and an upper cover, and the inner cavity is divided into an equipment cavity and a heat dissipation flow channel; a heating coil, an air blower and an electric control board component on an air flow path are arranged in the equipment cavity, and a power line opening gap is formed in the side wall to serve as an air inlet and an air outlet. The heat dissipation flow channel comprises a flow guide island platform structure and heat dissipation holes, the flow guide island platform is tightly attached to the heating coil to form a heat source area, air is heated to expand to generate positive pressure, and an air blower is arranged at one end of the heat dissipation flow channel to forcibly suck air flow; external cold air enters the equipment cavity through the radiator side opening heat dissipation holes, flows through the radiator, the components and the coil and is exhausted from the flow guide island platform side heat dissipation holes and the air blower opening, directional efficient heat dissipation is formed through the synergistic effect of air blower active cooling and hot-pressing boosting, the heat dissipation efficiency is remarkably improved, and noise is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to an induction cooker housing structure based on a blower cooling system. Background Art

[0002] In recent years, with the development of intelligent kitchen appliances, induction cookers have become popular in hundreds of millions of households as core cooking equipment. Their heat dissipation performance is directly related to user safety and product reliability.

[0003] To ensure the long-term and stable operation of induction cookers, the national mandatory standards set strict specifications for the heat dissipation system in terms of structural design, temperature rise limits, electrical insulation and other aspects.

[0004] The heat dissipation management of induction cookers not only involves the heat conduction of heating components (such as coil disks and IGBT modules), but also covers multi-dimensional technical links such as airflow path planning, insect prevention at air inlets and outlets, noise control, and thermal redundancy protection. Failure in any link may cause equipment failure or even safety accidents.

[0005] Utility model patent number CN202422038218 provides a multi-burner induction cooker structure that reduces reactive power losses and positions the cookware through telescopic and contact mechanisms. This solution features adjustable fixing columns around the heating zone, spring-driven curved contact blocks that accommodate cookware of varying shapes, and a removable bracket to support cylindrical cookware. While this design reduces heat loss caused by cookware deflection, it does not involve improvements to the heat dissipation system and still uses a traditional fan-based cooling solution. The exposed heat dissipation holes increase the risk of cockroach intrusion.

[0006] The utility model patent, CN221858640U, provides a foldable dual induction cooker structure that hinges and folds the first and second induction cookers together using a connecting assembly. This solution utilizes left / right connecting frames, connecting pins, and a limit shaft to form the folding mechanism, which locks the folding mechanism into place with the help of an auxiliary assembly's buckle. While this design addresses portability issues and increases the heating surface, it maintains a traditional heat dissipation architecture: each induction cooker unit still has a built-in axial fan cooling system. However, this cooling system has inherent flaws: the folding structure squeezes the internal space, reducing the cross-sectional area of ​​the air duct; and the dual-fan design results in noise accumulating.

[0007] To address the above issues, technological breakthroughs must be achieved through structural innovation. Summary of the Invention

[0008] The present invention aims to provide an induction cooker housing structure based on a blower cooling system to address the problems of low heat dissipation efficiency, excessive noise levels, and high risk of pest infestation associated with conventional induction cookers. This technology integrates forced air cooling with a centrifugal blower, thermal pressure-assisted guidance from a diversion island, and a composite insect-proof heat dissipation vent design to achieve directional, high-speed air circulation within the equipment cavity, significantly improving thermal management efficiency while ensuring safety.

[0009] To achieve the above object, the present invention provides the following solutions:

[0010] The present invention provides an induction cooker housing structure based on a blower cooling system, comprising a main inner cavity formed by an induction cooker bottom shell and an upper cover. The core innovation of the structure lies in:

[0011] Dual-chamber isolation architecture: The main inner cavity is divided into the equipment cavity and the heat dissipation channel by a channel partition;

[0012] The equipment cavity integrates the main electric control board components, heating coil and blower, and the side wall is provided with a power cord opening which also serves as an auxiliary air inlet;

[0013] The heat dissipation channel has a built-in guide island and a heat dissipation hole array, and a blower and a radiator are installed at the end.

[0014] Collaborative heat dissipation mechanism: The guide island is close to the coil to form a high-temperature positive pressure area, and the air expands due to heat to generate the initial driving force;

[0015] The blower draws air at a wind pressure of 11.69 mmH2O to form a directional path.

[0016] The present invention discloses the following technical effects:

[0017] The present invention can realize dual-power drive of forced convection by blower + thermal pressure boost, and the heat dissipation efficiency is improved by more than 20% compared with the traditional solution;

[0018] The present invention realizes double protection of 2mm diameter heat dissipation holes + electrostatic insect-proof net, reducing the accident rate of insect pest invasion to below 0.1%;

[0019] The present invention realizes the coordinated optimization of the centrifugal blower and the flow channel acoustics, and the noise level during full-power operation is ≤42.7dBA.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] (1) Innovation of dual-power heat dissipation mechanism: Through the synergistic effect of the thermal pressure boost of the guide island and the forced suction of the blower, the wind pressure bottleneck of the traditional single-fan system is broken through, solving the problem of heat dissipation attenuation under high-power working conditions;

[0022] (2) Integrated insect-proof and heat-dissipating design: 2mm precision heat dissipation holes combined with electrostatic insect-proof nets completely block the invasion path of insect pests while ensuring ventilation efficiency;

[0023] (3) Flow channel dynamics optimization: The combined design of the S-shaped tapered fin channel and the Venturi acceleration channel (island spacing 8-12mm) increases the air flow velocity to 3.2m / s and reduces turbulent loss to 8%;

[0024] (4) Reliability throughout the entire life cycle: The high-temperature resistant base makes the island life greater than 10 years, and the pluggable design of the blower facilitates maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is an overall structural diagram of an induction cooker shell structure based on a blower cooling system according to the present invention.

[0027] Figure 2 This is a schematic diagram of the heat flow of a blower cross section of an induction cooker housing structure based on a blower cooling system of the present invention.

[0028] Figure 3 This is a schematic diagram of the blower cross-section and fluid flow direction of an induction cooker housing structure based on a blower cooling system of the present invention.

[0029] Figure 4 This is a schematic diagram of the fluid flow direction of a coil cross section of an induction cooker housing structure based on a blower cooling system of the present invention.

[0030] Among them, 1, 2 - main electric control board components, 3 - reserved power cord opening structure, 4 - coil, 5 - induction cooker bottom shell, 6 - diversion island, 7 - heat dissipation holes on the induction cooker bottom shell, 8 - blower, 9 - radiator. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] The present invention provides Figure 1 As shown, an induction cooker shell structure based on a blower cooling system includes main electronic control board components 1, 2, a reserved power line opening structure 3, a coil 4, an induction cooker bottom shell 5, a guide island 6, heat dissipation holes 7 opened on the induction cooker bottom shell, a blower 8 and a radiator 9.

[0034] The main electronic control board components 1 and 2 are installed at the bottom of the equipment cavity, and the surface of the power tube is covered with a layer of thermal grease.

[0035] The power cord opening 3 is provided on the side wall of the equipment cavity, and a guide rib is provided on the inner side.

[0036] The heating coil 4 is fixed in the center of the equipment cavity, and a heat-conducting copper plate is welded to the bottom.

[0037] The induction cooker bottom shell 5 and the upper cover enclose a main inner cavity, and the materials are respectively high-temperature resistant glass and ABS.

[0038] The guide island 6 has a high-temperature resistant ceramic base bonded with a copper plate, and the height of the vertical fin group decreases from 15mm to 12mm (gradient 18%), forming an S-shaped flow channel.

[0039] The heat dissipation hole array 7 is distributed on the side wall of the bottom shell 5, with a hole diameter of 2mm±0.1mm and a 0.3mm thick electrostatic insect-proof net compounded on the inside.

[0040] Blower 8, centrifugal turbine unit, the bracket is installed at the end of the heat dissipation flow channel with a 30° tilt, and the rated wind pressure is 11.69mmH2O.

[0041] The radiator 9 has an aluminum fin structure and is located on the air inlet side of the blower 8 and is thermally connected to the main electronic control boards 1 and 2.

[0042] The working process of the present invention is described in detail below with reference to the accompanying drawings:

[0043] External cold air enters the equipment cavity from the heat dissipation holes and the power cord opening, and takes away the heat of the main electronic control board components when flowing through the radiator, achieving primary heat exchange with a temperature rise of 25°C; then the airflow enters the guide island area, heated and expanded by the high temperature of 104°C, and part of the heat flow is discharged from the heat dissipation holes behind the guide island; the blower draws in the pressurized airflow, increases the flow rate through the Venturi acceleration channel, and accelerates the flow of hot gas inside the induction cooker. Finally, part of the hot air flow is ejected at high speed from the blower outlet, and the other part is discharged to the outside through the heat dissipation holes.

[0044] The system ensures reliability through multiple design features: the electrostatic insect screen absorbs dust in real time and releases insect-repelling voltage, with an insect-repelling efficiency of greater than 99.8%; when the heating coil temperature exceeds 120°C, the blower automatically switches to overclocking mode, increasing the air pressure by 40%; after running for an extended period of time, the LED indicator light inside the heat dissipation hole flashes as a reminder to clean the insect screen.

[0045] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. An electromagnetic cooker housing structure based on a blower cooling system, comprising main electric control board components (1, 2), a reserved power line opening structure (3), a coil (4), an electromagnetic cooker bottom shell (5), a guide island (6), heat dissipation holes (7) opened on the electromagnetic cooker bottom shell, a blower (8) and a radiator (9); the electromagnetic cooker bottom shell (5) and the upper cover enclose a main inner cavity, and the main inner cavity is divided into an equipment cavity and a heat dissipation channel by an isolation structure; The equipment cavity is provided with main electric control board components (1, 2), a heating coil (4) and a blower (8), and a side wall is provided with a power line (3); The heat dissipation channel comprises a guide island (6) and a heat dissipation hole array (7); the guide island (6) is thermally connected to the heating coil (4) to form a high-temperature positive pressure zone; and the blower (8) is arranged at the end of the heat dissipation channel; External cold air enters the equipment cavity through the heat dissipation holes (7) on the side of the radiator, flows through the radiator (9), the main electric control board components (1, 2), and is discharged from the heat dissipation holes on the side of the guide island and the blower opening respectively.

2. The induction cooker housing structure based on the blower cooling system according to claim 1, characterized in that: The blower (8) is a centrifugal blower unit with a rated wind pressure range of 11.69 mmH20 and a noise value of 42.7 dBA.

3. The induction cooker housing structure according to claim 1, characterized in that: The diameter of the heat dissipation hole array (7) is 2 mm, and an electrostatic insect-proof net is provided on the inner side.

4. The induction cooker housing structure according to claim 1, characterized in that: The power line opening gap (3) is in the form of a narrow strip, the length of which accounts for 30%-40% of the circumference of the side wall of the equipment cavity, and a guide rib is provided on the inner edge thereof.

5. The induction cooker housing structure according to claim 1, characterized in that: The guide island (6) comprises a high temperature resistant base tightly attached to the lower surface of the heating coil (4) and a vertical fin group, forming an S-shaped airflow channel.

6. The induction cooker housing structure according to claim 5, characterized in that: The vertical fin group has a decreasing wind speed from the air inlet end to the air outlet end, forming a tapered flow channel cross section.

7. The induction cooker housing structure according to claim 1, characterized in that: A guide island (9) is provided in the heat dissipation flow channel, and its maximum cross section accounts for 60%-70% of the flow channel cross section.

8. The induction cooker housing structure according to claim 7, characterized in that: The distance between the guide islands is 8-12 mm, and a Venturi acceleration channel is formed between the two.

9. The induction cooker housing structure according to claim 1, characterized in that: The blower (8) bracket is installed at the end of the heat dissipation channel, and the air outlet faces the heat dissipation hole array (7).

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