Vehicle-mounted induction cooker

Abstract

The invention discloses a vehicle-mounted induction cooker which comprises a vehicle-mounted table board, protection shells are installed on the two sides of the bottom of the vehicle-mounted table board, an electric control cavity is formed in one side of the interior of each protection shell, a heating cavity is formed in the other side of each protection shell, a main control circuit board is installed in each electric control cavity, a shielding box is installed in each heating cavity, and a magnet exciting coil is installed in each shielding box. The magnet exciting coil is electrically connected with the main control circuit board through a wire, the top of the shielding box is connected with a microcrystalline glass plate, and a heating adjusting mechanism is arranged between the electric control cavity and the heating cavity. Through the innovatively designed heating adjusting mechanism, the vehicle-mounted induction cooker not only can efficiently heat the traditional ferromagnetic cookware, but also solves the problem that the non-ferromagnetic cookware cannot be effectively heated. Therefore, the degree of freedom when a user selects the cooking utensil is greatly expanded, and inconvenience caused by mismatching of materials of the cookware is reduced.

Description

Technical Field

[0001] This invention relates to the field of cooking appliance technology, and more specifically, to a vehicle-mounted induction cooker. Background Technology

[0002] With the increasing popularity of self-driving tours, users are demanding more convenience and functional integration from their vehicles. During long journeys, many vehicles are equipped with extendable tables in the trunk to meet diverse needs such as temporary meals, simple cooking, item placement, and outdoor work. These tables typically feature a modular design, allowing them to be removed entirely and independently mounted on support legs, or fixed at one end to the trunk sill or side wall while the other end is pulled outwards, relying on its own rigidity and gravity for stable semi-cantilever support. They offer advantages such as compact structure, convenient storage, flexible use, and strong adaptability to various scenarios, making them an important component of multi-functional in-vehicle extension equipment.

[0003] To further enhance catering capabilities during travel, some existing vehicle-mounted tables integrate induction cooker modules. Powered by an onboard inverter or external power source, these modules utilize electromagnetic induction to generate eddy currents at the bottom of the cookware for heating, offering advantages such as no open flame, high thermal efficiency, rapid response, and good safety. However, the working mechanism of induction cookers dictates that they can only effectively couple cookware made of ferromagnetic materials (such as cast iron and magnetic stainless steel). For non-ferromagnetic materials (such as pure aluminum, copper, glass, ceramics, non-magnetic stainless steel, and multi-layered non-magnetic composite cookware), they cannot generate sufficient eddy currents, resulting in inability to heat properly or even complete failure. This inherent physical limitation requires users to carry separate cookware, significantly increasing the burden of travel. Furthermore, in actual use, misuse of cookware often leads to problems such as "no heating" or "abnormal power drop," reducing equipment reliability and user experience.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Summary of the Invention

[0005] In view of the problems in related technologies, the present invention proposes a vehicle-mounted induction cooker to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by the present invention is as follows:

[0007] A vehicle-mounted induction cooker includes a vehicle-mounted table. Protective shells are installed on both sides of the bottom of the vehicle-mounted table. An electrical control cavity is provided on one side of the protective shell, and a heating cavity is provided on the other side. A main control circuit board is installed inside the electrical control cavity. A shielding box is installed inside the heating cavity. An excitation coil is installed inside the shielding box. The excitation coil is electrically connected to the main control circuit board through a wire. A microcrystalline glass plate is connected to the top of the shielding box. A heating adjustment mechanism is provided between the electrical control cavity and the heating cavity.

[0008] Furthermore, in order to enable cooking and heating of non-ferromagnetic cookware, the heating adjustment mechanism includes electric push rods installed on both sides of the bottom of the heating cavity. The ends of the electric push rods are connected to the bottom of the shielding box. Limit grooves are opened on both sides of the inside of the electric control cavity and the heating cavity. Adjustment blocks are slidably installed inside the limit grooves. A microcrystalline glass ring is connected to one side of the adjustment block. A heating plate is installed inside the microcrystalline glass ring.

[0009] Furthermore, in order to protect the surface of the heating plate and facilitate its sliding and telescopic movement, a copper plate is connected to the surface of the heating plate, a sliding ring is connected to one side of the microcrystalline glass ring, and cooking slots are opened on both sides of the surface of the vehicle table.

[0010] Furthermore, in order to provide a stable high-frequency pulse current to the excitation coil, a microcontroller is mounted on one side of the main control circuit board, an IGBT module is mounted on one side of the microcontroller, a rectifier bridge is mounted on one side of the IGBT module, and a filter module is mounted on one side of the rectifier bridge.

[0011] Furthermore, in order to adjust the heating method for cookware of different materials, a multi-control switch is installed on one side of the vehicle's table.

[0012] Furthermore, in order to connect the main control circuit board to an external power source, a power interface is installed on one side of the main control circuit board.

[0013] Furthermore, in order to achieve sliding support for the vehicle-mounted table, a support frame is provided at the bottom of the vehicle-mounted table, and a sliding track is provided on the surface of the support frame, with the bottom of the vehicle-mounted table cooperating with the sliding track.

[0014] The beneficial effects of this invention are as follows:

[0015] 1. Traditional electromagnetic heating methods are limited by the principle of electromagnetic induction, and their energy transfer efficiency depends entirely on the ferromagnetic properties of the cookware itself. This invention creatively introduces a dynamically adjustable heating mechanism. This system precisely controls the vertical position of the excitation coil via an electric push rod, and, in conjunction with a horizontally sliding composite heating module (a low-carbon steel heating plate and a copper plate), reconstructs the physical path of magnetic field and heat energy transfer. This allows the same electromagnetic generation system to intelligently switch between direct eddy current heating (for ferromagnetic cookware) and indirect conduction heating (for non-ferromagnetic cookware), effectively solving the problem of ineffective heating of non-ferromagnetic cookware. This greatly expands the user's freedom in choosing cooking utensils and reduces the inconvenience caused by incompatible cookware materials. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments 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.

[0017] Figure 1 This is a schematic diagram of the surface structure of a vehicle-mounted induction cooker according to an embodiment of the present invention;

[0018] Figure 2 This is a bottom view of the vehicle-mounted table in a vehicle-mounted induction cooker according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the surface structure of a protective shell in a vehicle-mounted induction cooker according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the internal structure of the shielding box in a vehicle-mounted induction cooker according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the internal structure of the heating chamber in a vehicle-mounted induction cooker according to an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the surface structure of the main control circuit board in a vehicle-mounted induction cooker according to an embodiment of the invention;

[0023] Figure 7 This is an internal cross-sectional view of the protective shell in a vehicle-mounted induction cooker according to an embodiment of the present invention;

[0024] Figure 8 This is a schematic diagram showing the surface structure of the heating plate in a vehicle-mounted induction cooker according to an embodiment of the present invention.

[0025] In the picture:

[0026] 1. Vehicle-mounted table; 2. Protective shell; 3. Electrical control cavity; 4. Heating cavity; 5. Main control circuit board; 6. Shielding box; 7. Excitation coil; 8. Microcrystalline glass plate; 9. Heating adjustment mechanism; 901. Electric push rod; 902. Limiting groove; 903. Adjusting block; 904. Microcrystalline glass ring; 905. Heating plate; 906. Copper plate; 907. Push-pull ring; 908. Cooking tank; 10. Microcontroller; 11. IGBT module; 12. Rectifier bridge; 13. Filter module; 14. Multi-control switch; 15. Power interface; 16. Support frame; 17. Sliding rail. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 scope of protection of the present invention.

[0028] According to an embodiment of the present invention, a vehicle-mounted induction cooker is provided.

[0029] Example 1:

[0030] like Figures 1-6 As shown, a car-mounted induction cooker includes a car-mounted table 1 for installation in the trunk of a car, which can be pulled out for use. A pair of aluminum protective shells 2 are installed on both sides of the bottom of the car-mounted table 1. Each protective shell 2 has an electrical control cavity 3 on one side and a heating cavity 4 on the other side. A main control circuit board 5 is installed inside the electrical control cavity 3 to convert external current into high-frequency pulse current. A shielding box 6 is installed inside the heating cavity 4, and an excitation coil 7 is installed inside the shielding box 6. The excitation coil 7 is electrically connected to the main control circuit board 5 via wires. The excitation coil 7 receives signals from the main control circuit board... The high-frequency pulsed current inside plate 5 generates an alternating magnetic field. When this magnetic field acts on the inside of the ferromagnetic cookware, it causes eddy currents to form inside the cookware, thereby generating heat. The shielding box 6 prevents the magnetic field generated by the excitation coil 7 from spreading and leaking to the bottom and sides. The top of the shielding box 6 is connected to a microcrystalline glass plate 8, which is used to directly contact the cookware, thereby protecting the excitation coil 7 and providing strong high-temperature resistance. A heating adjustment mechanism 9 is provided between the electrical control cavity 3 and the heating cavity 4, which is used to adjust the heating mode when cooking with cookware of different materials, so as to achieve the cooking and heating effects of various cookware.

[0031] like Figures 1-8As shown, the heating adjustment mechanism 9 includes electric push rods 901 installed on both sides of the bottom of the heating chamber 4. The ends of the electric push rods 901 are connected to the bottom of the shielding box 6. By extending and retracting the electric push rods 901, the shielding box 6 and its internal excitation coil 7 can be driven to move up and down within the heating chamber 4. Limiting grooves 902 are opened on both sides of the interior of the electrical control chamber 3 and the heating chamber 4. An adjusting block 903 is slidably installed inside each limiting groove 902. A microcrystalline glass ring 904 is connected between two adjusting blocks 903. A low-carbon steel material is installed inside the microcrystalline glass ring 904. The heating plate 905, after the alternating magnetic field generated by the excitation coil 7 acts inside it, can achieve rapid heating; a copper plate 906 is connected to the surface of the heating plate 905, which can protect the surface of the heating plate 905 and efficiently transfer the heat generated inside the heating plate 905 to the non-ferromagnetic cookware, realizing the cooking heating effect of the cookware; a push-pull ring 907 is connected to one side of the microcrystalline glass ring 904, and cooking grooves 908 are opened on both sides of the surface of the vehicle table 1 to allow the cookware to contact the microcrystalline glass plate 8 or the copper plate 906; main A microcontroller 10 is mounted on one side of the main control circuit board 5. An IGBT module 11 is mounted on one side of the microcontroller 10. A rectifier bridge 12 is mounted on one side of the IGBT module 11. A filter module 13 is mounted on one side of the rectifier bridge 12. The filter module 13 consists of capacitors and inductors. A power interface 15 is mounted on one side of the main control circuit board 5. After external current enters through the power interface 15, the rectifier bridge 12 converts the alternating current (AC) into direct current (DC). The DC current then enters the filter module 13, which consists of inductors and capacitors. The cooperation of the inductors and capacitors enables the filter module to convert the AC current into DC current. The current becomes more stable, and the stable current then enters the IGBT module 11, turning the DC current into a high-frequency pulse current. Finally, the high-frequency pulse current enters the excitation coil 7 and generates an alternating magnetic field. A multi-control switch 14 is installed on one side of the vehicle table 1 to control the main control circuit board 5 and the electric push rod 901. A support frame 16 is provided at the bottom of the vehicle table 1, and a sliding rail 17 is provided on the surface of the support frame 16. The bottom of the vehicle table 1 cooperates with the sliding rail 17 to install the vehicle table 1 in the trunk of the car, and it can be slid out when needed.

[0032] To facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process will be described in detail below.

[0033] In summary, with the help of the above-mentioned technical solution of the present invention, in actual use, when the user selects a ferromagnetic cookware (such as a cast iron pot) for cooking, the multi-control switch 14 switches to the "electromagnetic direct heating mode". At this time, the electric push rod 901 is in the extended state, raising the shielding box 6 and the internal excitation coil 7 to a high position, placing the cookware on the surface of the microcrystalline glass plate 8; external AC power is input through the power interface 15, and is successively converted into DC power by the rectifier bridge 12, filtered by the filter module 13 (capacitor and inductor working together) to smooth voltage ripple, and inverted into a 20-40kHz high-frequency pulse current by the IGBT module 11, finally driving the excitation coil 7 to generate a strong alternating magnetic field. After penetrating the microcrystalline glass plate 8, this magnetic field is efficiently coupled to the bottom of the ferromagnetic cookware, exciting significant eddy currents accompanied by hysteresis loss, realizing rapid and efficient direct heating, thus facilitating cooking; the shielding box 6 effectively constrains the magnetic field to diffuse downwards and laterally to the tabletop, ensuring the safety and electromagnetic compatibility of the vehicle's electronic equipment. When the user selects a non-ferromagnetic cookware (such as an aluminum alloy pot, glass pot, or ceramic pot), the multi-control switch 14 switches to "conductive heating mode". The microcontroller 10 then issues a command to control the electric push rods 901 on both sides to extend synchronously, pushing the shielding box 6 and the excitation coil 7 to move down as a whole. At this time, the heating plate 905 is pulled by the push-pull ring 907. The heating plate 905 slides in the limiting groove 902 through the adjusting blocks 903 on both sides, and then slides above the microcrystalline glass plate 8. The alternating magnetic field generated by the excitation coil 7 acts on the low carbon steel heating plate 905, efficiently stimulating eddy currents and hysteresis losses inside, causing it to heat up rapidly (up to 300°C or more). The heat is efficiently conducted out through the tightly attached metal copper plate 906 and evenly conducted to the bottom of the non-ferromagnetic cookware placed on it through the upper surface of the copper plate, realizing stable and controllable indirect heat conduction heating, thus used for cooking heating of non-ferromagnetic cookware. Among them, the copper plate 906 has both high thermal conductivity and good thermal stability, which can avoid local overheating; the microcrystalline glass ring 904 provides high-temperature insulation support and structural positioning for the heated plate 905, and together with the microcrystalline glass plate 8, it forms a double-layer high-temperature protection system (temperature resistance ≥800℃) to ensure long-term safe and reliable operation.

[0034] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vehicle-mounted induction cooker, characterized in that, The device includes a vehicle-mounted table (1), with protective shells (2) installed on both sides of the bottom of the vehicle-mounted table (1). An electrical control cavity (3) is provided on one side of the protective shell (2), and a heating cavity (4) is provided on the other side. A main control circuit board (5) is installed inside the electrical control cavity (3), and a shielding box (6) is installed inside the heating cavity (4). An excitation coil (7) is installed inside the shielding box (6), and the excitation coil (7) is electrically connected to the main control circuit board (5) through a wire. A microcrystalline glass plate (8) is connected to the top of the shielding box (6), and a heating adjustment mechanism (9) is provided between the electrical control cavity (3) and the heating cavity (4).

2. The vehicle-mounted induction cooker according to claim 1, characterized in that, The heating adjustment mechanism (9) includes electric push rods (901) installed on both sides of the bottom of the heating chamber (4). The end of the electric push rod (901) is connected to the bottom of the shielding box (6). Limiting grooves (902) are opened on both sides of the inside of the electric control chamber (3) and the heating chamber (4). An adjustment block (903) is slidably installed inside the limiting groove (902). A microcrystalline glass ring (904) is connected to one side of the adjustment block (903). A heating plate (905) is installed inside the microcrystalline glass ring (904).

3. A vehicle-mounted induction cooker according to claim 2, characterized in that, A copper plate (906) is connected to the surface of the heating plate (905), a push-pull ring (907) is connected to one side of the microcrystalline glass ring (904), and cooking slots (908) are opened on both sides of the surface of the vehicle table (1).

4. A vehicle-mounted induction cooker according to claim 1, characterized in that, A microcontroller (10) is mounted on one side of the main control circuit board (5), an IGBT module (11) is mounted on one side of the microcontroller (10), a rectifier bridge (12) is mounted on one side of the IGBT module (11), and a filter module (13) is mounted on one side of the rectifier bridge (12).

5. A vehicle-mounted induction cooker according to claim 1, characterized in that, A multi-control switch (14) is installed on one side of the vehicle table (1).

6. A vehicle-mounted induction cooker according to claim 1, characterized in that, A power interface (15) is installed on one side of the surface of the main control circuit board (5).

7. A vehicle-mounted induction cooker according to claim 1, characterized in that, The bottom of the vehicle table (1) is provided with a support frame (16), and the surface of the support frame (16) is provided with a sliding rail (17). The bottom of the vehicle table (1) is matched with the sliding rail (17).

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