Rechargeable induction cooker

Abstract

The utility model belongs to the technical field of induction cookers, and particularly relates to a rechargeable induction cooker. The utility model provides a heating device which comprises a shell, a heating device arranged in the center of the interior of the shell, and a heat insulation device fixedly arranged between the heating device and the shell and used for insulating hot air generated by the heating device. The heat dissipation device is arranged on one side of the heating device, and the heat dissipation device is used for conducting heat dissipation on the heating device. According to the technical scheme, when the heating device of the induction cooker works, the heat dissipation device brings cold air into the shell to dissipate heat of the heating device so as to prevent the temperature in the induction cooker from being too high, and the heat insulation device isolates the heating device from other devices in the shell so as to protect the shell of the induction cooker and the other devices in the shell from being damaged.

Description

Technical Field

[0001] This utility model belongs to the field of induction cooker technology, and in particular relates to a rechargeable induction cooker. Background Technology

[0002] An induction cooker, also known as an induction stove, is a product of the modern kitchen revolution. It eliminates the need for open flames or conductive heating, generating heat directly from the bottom of the pot, thus greatly improving thermal efficiency. It is a highly efficient and energy-saving cooker, completely different from all traditional cookware with or without flames. An induction cooker is an electric cooking appliance made using the principle of electromagnetic induction heating. It consists of a high-frequency induction heating coil (i.e., excitation coil), a high-frequency power conversion device, a controller, and a pot with a ferromagnetic bottom. During use, an alternating current is passed through the heating coil, generating an alternating magnetic field around the coil. Most of the magnetic field lines pass through the metal pot, generating numerous eddy currents in the bottom of the pot, thus producing the heat needed for cooking. Since there is no open flame during the heating process, it is safe and hygienic.

[0003] The existing patent CN209622867U discloses a low-voltage rechargeable induction cooker, including a shell with an electromagnetic coil inside. The top of the shell has a heating zone and a control panel, which are electrically connected to the electromagnetic coil. One side of the shell has a battery, a charging socket, a voice player, and a USB port. The battery is electrically connected to the control panel, the charging socket, and the voice player, respectively. The voice player is electrically connected to the USB port. Threaded sleeves are installed at the four corners of the bottom of the shell, with threaded rods fitted inside the sleeves and pads at the bottom of the threaded rods. Compared with traditional fixed-power induction cookers, this type of cooker has two main advantages: lower voltage, safer operation, no fixed power supply limitations, and no interference from power cords. It is suitable for use outdoors and as a hot pot stove for dining tables. In particular, it solves the problems of unsanitary, unsafe, and environmentally unfriendly fuel stoves for dining tables, as well as the lack of durability of the stove body and the unsafety and inconvenience of traditional 220V fixed-power induction cookers. However, induction cookers heat food through electromagnetic induction rather than by directly heating the cooking container with a flame generated by gas combustion. Therefore, when a rechargeable induction cooker is placed on a flat surface made of magnetic materials such as metal, if stable heat dissipation cannot be achieved, the magnetic field generated by the induction heating coil may cause the surrounding environment or the surface of the flat surface to be arbitrarily heated, thereby damaging the outer shell of the induction cooker. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned technical problems by providing a rechargeable induction cooker that allows for stable airflow inside, improving its heat dissipation performance and preventing damage to the cooker's outer casing.

[0005] In view of the above, the present invention provides a rechargeable induction cooker, characterized in that it includes a shell, wherein a heating device is disposed at the center of the shell, and further includes:

[0006] A heat insulation device is fixedly installed between the heating device and the outer casing, and the heat insulation device is used to isolate the hot air generated by the heating device.

[0007] A heat dissipation device is provided on one side of the heating device and is used to dissipate heat from the heating device.

[0008] In this technical solution, when the heating device of the induction cooker is working, the heat dissipation device brings cold air into the outer shell to dissipate heat from the heating device and prevent the temperature inside the induction cooker from becoming too high. The heat insulation device isolates the heating device from other devices inside the outer shell, protecting the outer shell of the induction cooker and other devices inside the outer shell from damage.

[0009] Furthermore, the heating device includes a heating coil, and the heat insulation device includes:

[0010] The first partition is fixedly disposed between the heating device and the heat dissipation device. The first partition is used to protect the heat dissipation device. Multiple flow grooves are provided on the first partition.

[0011] The second partition is disposed on the same side as the first partition along the length of the outer shell. One end of the second partition is connected to the inner wall of the outer shell, and one end of the second partition is connected to one end of the first partition.

[0012] The third partition is disposed on one side of the outer peripheral surface of the heating device. The third partition is opposite to the second partition and is arc-shaped, forming an airflow path between the third partition and the second partition.

[0013] Furthermore, the first partition, the second partition, and the third partition are made of heat-insulating material.

[0014] In this technical solution, the first partition, the second partition, and the third partition can be made of thermally conductive silicone.

[0015] Furthermore, the side wall of the outer casing is provided with ventilation slots and exhaust slots, and the heat dissipation device includes a fan, which is located inside the outer casing near the ventilation slots. The fan is used to drive cold air to dissipate heat from the heating device.

[0016] In this technical solution, the fan rotation causes the cold air outside the induction cooker shell to enter the space formed by the shell and the second partition through the ventilation slot. Under the blowing of the fan, the cold air enters the heating device through the flow slot on the first partition. The cold air, along with the hot air near the heating device, passes through the path formed by the third partition and the second partition and is discharged from the induction cooker shell through the exhaust slot, thereby achieving heat dissipation of the heating device and achieving efficient heat dissipation.

[0017] Furthermore, the second partition is wavy.

[0018] In this technical solution, the second baffle is wavy, which not only reduces the resistance to the flow of cold air and makes the air flow more smoothly, but also forces the airflow to bend and separate repeatedly along its surface. When the airflow passes through the wavy protrusions, the flow velocity accelerates or decelerates in the local area, resulting in an increase in the velocity gradient. This will destroy the stable laminar boundary layer, cause the fluid micro-particles to rotate, help to form turbulence, accelerate the airflow, improve the heat exchange efficiency, and remove the heat from the hot air around the heating coil in time.

[0019] Furthermore, an air intake protrusion is provided on the bottom surface of the outer casing between the second and third partitions, and the air intake protrusion is arc-shaped.

[0020] In this technical solution, the air intake protrusion increases the airflow velocity by changing the airflow cross-sectional area. The increased velocity leads to a decrease in static pressure below the heating device, thereby forming a low-pressure zone on the side of the air intake protrusion away from the flow channel. This actively draws in external air, improving the airflow exchange efficiency between the bottom of the heating device and the outside of the heating device, thus better dissipating heat from the bottom of the heating device.

[0021] Furthermore, a disc-shaped shielding plate is provided below the heating coil. The shielding plate has three mounting posts in the circumferential direction. One end of each mounting post is fixedly connected to the bottom of the outer shell. The shielding plate is detachably fixedly connected to the heating coil through the mounting posts.

[0022] In this technical solution, the shielding plate can not only effectively absorb and block the electromagnetic waves generated by the heating coil to avoid potential harm to the human body and other electronic devices and ensure safe use, but also prevent the induction cooker from heating the metal tabletop when it is placed on it, thus protecting the tabletop and surrounding metal objects from being affected.

[0023] Furthermore, the shielding plate is made of non-magnetic metal material and is composed of multiple through holes, which are used to dissipate heat from the lower part of the heating coil.

[0024] In this technical solution, the shielding plate can be made of aluminum.

[0025] Furthermore, a stain-resistant pad is fitted on the top of the outer casing to prevent soup or water from splashing onto the induction cooker casing during cooking. Elastic cords are provided on three sides of the stain-resistant pad to fix it to the side wall of the outer casing. The elastic cords are positioned above the exhaust vent and ventilation openings of the outer casing. The stain-resistant pad has positioning holes at positions corresponding to the heating element of the outer casing, and the diameter of the positioning holes matches that of the heating element.

[0026] In this technical solution, when the induction cooker needs to heat the cooking pot, the anti-fouling pad is first fixed to the outer shell of the induction cooker with an elastic rope, and then the cooking pot is placed on the positioning hole. When the soup in the cooking pot boils, it will splash onto the outer shell of the induction cooker. Laying an anti-fouling pad on the outer shell can effectively prevent the outer shell of the induction cooker from being contaminated.

[0027] Furthermore, the anti-fouling pad uses a heat-resistant film that is permeable to magnetic lines of force. The film includes a sheet material and a coating. The sheet material has a coating on both sides. The sheet material is made of heat-resistant fiber, and the coating is made of a waterproof material.

[0028] In this technical solution, the sheet material can be made of glass fiber, and the coating can be made of silicone resin.

[0029] The beneficial effects of this utility model are:

[0030] 1. This utility model enables the fan to rotate, allowing cold air outside the induction cooker shell to enter the space formed by the shell and the second partition through the ventilation slot. Under the blowing of the fan, the cold air enters the heating device through the flow slot on the first partition. The cold air, along with the hot air near the heating device, passes through the path formed by the third partition and the second partition and is discharged from the induction cooker shell through the exhaust slot, thereby achieving heat dissipation of the heating device and achieving efficient heat dissipation.

[0031] 2. This utility model not only enables the shielding plate to effectively absorb and block electromagnetic waves generated by the heating coil, avoiding potential harm to the human body and other electronic devices and ensuring safe use; it also prevents the induction cooker from heating the metal tabletop when placed on it, protecting the tabletop and surrounding metal items from being affected.

[0032] 3. This utility model enables the induction cooker to heat the cooking pot. When the induction cooker needs to heat the cooking pot, the anti-fouling pad is first fixed to the outer shell of the induction cooker with an elastic rope, and then the cooking pot is placed on the positioning hole. When the soup in the cooking pot boils, it will splash onto the outer shell of the induction cooker. The anti-fouling pad can effectively prevent the outer shell of the induction cooker from being contaminated. Attached image description:

[0033] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0034] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0035] Figure 3 This is a schematic diagram of airflow movement at the bottom of the outer shell of this utility model;

[0036] Figure 4 This is a schematic diagram of the airflow movement below the heating device of this utility model;

[0037] Figure 5 This is an exploded view of the interior of this utility model;

[0038] Figure 6 This is a schematic diagram of the airflow movement on the heating device of this utility model;

[0039] Figure 7 This is a schematic diagram of the anti-fouling pad structure of this utility model;

[0040] In the diagram: 1. Outer shell; 2. Anti-fouling pad; 3. Positioning hole; 4. Heating coil; 5. First partition; 6. Second partition; 7. Third partition; 8. Ventilation slot; 9. Exhaust slot; 10. Fan; 11. Flow channel; 12. Shielding plate; 13. Air inlet protrusion; 14. Mounting post; 15. Elastic rope. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0042] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0043] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0044] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not 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 on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0045] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0046] Example 1:

[0047] like Figure 1-6 As shown, this utility model provides a rechargeable induction cooker, including a shell 1, a heating device disposed at the center of the shell 1, and further comprising:

[0048] A heat insulation device is fixedly installed between the heating device and the outer casing 1, and the heat insulation device is used to isolate the hot air generated by the heating device.

[0049] A heat dissipation device is provided on one side of the heating device and is used to dissipate heat from the heating device.

[0050] When the heating device of the induction cooker is working, the heat dissipation device brings cold air into the outer shell 1 to dissipate heat from the heating device and prevent the temperature inside the induction cooker from getting too high. The heat insulation device isolates the heating device from other devices inside the outer shell 1, protecting the outer shell 1 and other devices inside the outer shell 1 from damage.

[0051] The heating device includes a heating coil 4, and the heat insulation device includes:

[0052] The first partition 5 is fixedly disposed between the heating device and the heat dissipation device. The first partition 5 is used to protect the heat dissipation device. Multiple flow grooves 11 are provided on the first partition 5.

[0053] The second partition 6 is disposed on the same side as the first partition 5 along the length direction of the outer shell 1. One end of the second partition 6 is connected to the inner wall of the outer shell 1, and one end of the second partition 6 is connected to one end of the first partition 5.

[0054] The third partition 7 is disposed on one side of the outer peripheral surface of the heating device. The third partition 7 is opposite to the second partition 6 and is arc-shaped. An air circulation path is formed between the third partition 7 and the second partition 6.

[0055] The first partition 5, the second partition 6 and the third partition 7 are made of heat-insulating material.

[0056] The first partition 5, the second partition 6, and the third partition 7 can be made of thermally conductive silicone.

[0057] Furthermore, a ventilation slot 8 and an exhaust slot 9 are provided on the side wall of the outer casing 1. The heat dissipation device includes a fan 10, which is located inside the outer casing 1 on the side near the ventilation slot 8. The fan 10 is used to drive cold air to dissipate heat from the heating device.

[0058] The fan 10 rotates, causing the cold air outside the induction cooker shell 1 to enter the space formed by the shell 1 and the second partition 6 through the ventilation slot 8. Under the blowing of the fan 10, the cold air enters the heating device through the flow slot 11 on the first partition 5. The cold air, along with the hot air near the heating device, passes through the path formed by the third partition 7 and the second partition 6 and is discharged from the induction cooker shell 1 through the exhaust slot 9, thereby achieving heat dissipation of the heating device and achieving efficient heat dissipation.

[0059] The second partition 6 is wavy.

[0060] The second baffle 6 is wavy, which not only reduces the resistance to the flow of cold air and makes the air flow more smoothly, but also forces the airflow to bend and separate repeatedly along its surface. When the airflow passes through the wavy protrusions, the flow velocity accelerates or decelerates in the local area, resulting in an increase in the velocity gradient. This will destroy the stable laminar boundary layer, cause the fluid micro-particles to rotate, help to form turbulence, accelerate the airflow, improve the heat exchange efficiency, and remove the heat in the hot air around the heating coil 4 in time.

[0061] An air intake protrusion 13 is provided on the bottom surface of the outer shell 1 between the second partition 6 and the third partition 7. The air intake protrusion 13 is arc-shaped.

[0062] The air intake protrusion 13 increases the airflow speed by changing the airflow cross-sectional area. The increased flow speed leads to a decrease in static pressure below the heating device, thereby forming a low-pressure zone on the side of the air intake protrusion 13 away from the flow groove 11. This actively draws in external air, improving the airflow exchange efficiency between the bottom of the heating device and the outside of the heating device, thus better dissipating heat from the bottom of the heating device.

[0063] Example 3:

[0064] like Figure 1-6 As shown, a disc-shaped shielding plate 12 is provided below the heating coil 4. The shielding plate 12 has three mounting posts 14 in the circumferential direction. One end of the mounting post 14 is fixedly connected to the bottom of the outer shell 1. The shielding plate 12 is detachably fixedly connected to the heating coil 4 through the mounting posts 14.

[0065] The shielding plate 12 can not only effectively absorb and block the electromagnetic waves generated by the heating coil 4, avoiding potential harm to the human body and other electronic devices and ensuring safe use; it can also prevent the induction cooker from heating the metal tabletop when it is placed on it, protecting the tabletop and surrounding metal items from being affected.

[0066] The shielding plate 12 is made of non-magnetic metal material and is provided with multiple through holes, which are used to dissipate heat from the lower part of the heating coil 4.

[0067] The shielding plate 12 can be made of aluminum.

[0068] Example 3:

[0069] like Figure 1-7As shown, a stain-resistant pad 2 is fitted on the top of the outer casing 1. The stain-resistant pad 2 is used to prevent soup from splashing onto the outer casing 1 during cooking. Elastic ropes 15 are provided on three sides of the stain-resistant pad 2. The elastic ropes 15 are used to fix the stain-resistant pad 2 to the side wall of the outer casing 1. The elastic ropes 15 are located above the exhaust port and ventilation opening of the outer casing 1. The stain-resistant pad 2 has a positioning hole 3 at a position corresponding to the heating part of the outer casing 1. The diameter of the positioning hole 3 matches that of the heating part.

[0070] When the induction cooker needs to heat the cooking pot, first fix the anti-fouling pad 2 to the outer shell 1 of the induction cooker with the elastic rope 15, and then place the cooking pot on the positioning hole 3. When the soup in the cooking pot boils, it will splash onto the outer shell 1 of the induction cooker. Laying the anti-fouling pad on the outer shell 1 can effectively prevent the outer shell 1 of the induction cooker from being contaminated.

[0071] The anti-fouling pad 2 is made of a heat-resistant film that is permeable to magnetic lines of force. The film includes a sheet material and a coating. The sheet material is coated on both sides. The sheet material is made of heat-resistant fiber, and the coating is made of a waterproof material.

[0072] The sheet material can be made of glass fiber, and the coating can be made of silicone resin.

[0073] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A rechargeable induction cooker, characterized in that, Including a housing (1), wherein a heating device is disposed at the center of the housing (1), and further comprising: A heat insulation device is fixedly installed between the heating device and the outer shell (1), and the heat insulation device is used to isolate the hot air generated by the heating device; A heat dissipation device is provided on one side of the heating device and is used to dissipate heat from the heating device.

2. A rechargeable induction cooker according to claim 1, characterized in that, The heating device includes a heating coil (4), and the heat insulation device includes: The first partition (5) is fixedly disposed between the heating device and the heat dissipation device. The first partition (5) is used to protect the heat dissipation device. Multiple flow grooves (11) are provided on the first partition (5). The second partition (6) is disposed on the same side as the first partition (5) along the length direction of the outer shell (1). One end of the second partition (6) is connected to the inner wall of the outer shell (1), and one end of the second partition (6) is connected to one end of the first partition (5). The third partition (7) is disposed on one side of the outer peripheral surface of the heating device. The third partition (7) is opposite to the second partition (6). The third partition (7) is arc-shaped, and an air circulation path is formed between the third partition (7) and the second partition (6).

3. A rechargeable induction cooker according to claim 2, characterized in that, The first partition (5), the second partition (6) and the third partition (7) are made of heat-insulating material.

4. A rechargeable induction cooker according to claim 1, characterized in that, The outer casing (1) has a ventilation slot (8) and an exhaust slot (9) on its side wall. The heat dissipation device includes a fan (10), which is located inside the outer casing (1) on the side near the ventilation slot (8). The fan (10) is used to drive cold air to dissipate heat from the heating device.

5. A rechargeable induction cooker according to claim 2, characterized in that, The second partition (6) is wavy.

6. A rechargeable induction cooker according to claim 2, characterized in that, An air intake protrusion (13) is provided on the bottom surface of the outer shell (1) between the second partition (6) and the third partition (7), and the air intake protrusion (13) is arc-shaped.

7. A rechargeable induction cooker according to claim 2, characterized in that, A disc-shaped shielding plate (12) is provided below the heating coil (4). The shielding plate (12) has three mounting posts (14) in the circumferential direction. One end of the mounting post (14) is fixedly connected to the bottom of the outer shell (1). The shielding plate (12) is detachably fixedly connected to the heating coil (4) through the mounting posts (14).

8. A rechargeable induction cooker according to claim 7, characterized in that, The shielding plate (12) is made of non-magnetic metal material and is provided with multiple through holes, which are used to dissipate heat from the lower part of the heating coil (4).

9. A rechargeable induction cooker according to claim 1, characterized in that, A stain-proof pad (2) is fitted on the top of the outer shell (1). The stain-proof pad (2) is used to prevent soup from splashing onto the outer shell (1) during cooking. Elastic ropes (15) are provided on three sides of the stain-proof pad (2). The elastic ropes (15) are used to fix the stain-proof pad (2) to the side wall of the outer shell (1). The elastic ropes (15) are set above the exhaust port and ventilation hole of the outer shell (1). The stain-proof pad (2) has a positioning hole (3) at a position corresponding to the heating part of the outer shell (1). The diameter of the positioning hole (3) matches that of the heating part.

10. A rechargeable induction cooker according to claim 9, characterized in that, The anti-fouling pad (2) is made of a heat-resistant film that is permeable to magnetic lines of force. The film includes a sheet material and a coating. The sheet material is coated on both sides. The sheet material is made of heat-resistant fiber, and the coating is made of waterproof material.

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