Induction cooker

Abstract

This utility model discloses an induction cooker, comprising: a cooker body having an air inlet, a first cavity, an upper air duct, a lower air duct, and an air outlet; the air inlet connecting to the first cavity, the first cavity being located on one side of the upper and lower air ducts, the upper air duct being located above the lower air duct, and both the upper and lower air ducts connecting to the air outlet; a heating element disposed within the upper air duct; a power element disposed within the lower air duct and electrically connected to the heating element; and a fan disposed within the first cavity, electrically connected to the power element, the fan's air inlet connecting to the first cavity, and the fan's air outlet connecting to the upper and lower air ducts, the fan being used to guide outside air to the upper and lower air ducts. This induction cooker utilizes a single fan to simultaneously dissipate heat from both the heating element and the power element, not only improving the fan's utilization efficiency but also enhancing overall heat dissipation performance.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to an induction cooker. Background Technology

[0002] An induction cooker is a modern household appliance. Its working principle is to generate a high-frequency alternating magnetic field through a control circuit. When this magnetic field acts on a magnetic cookware, it forms dense eddy currents, which in turn convert the induced current into heat to heat the food. It has the characteristics of high energy efficiency.

[0003] Chinese utility model patent CN222012017U discloses a single-fan cooling induction cooker, which includes a shell, a panel, a fan, and power devices. The panel covers the shell and forms a cavity. A baffle plate on the shell divides the cavity into a first chamber and an upper air duct. The fan is located in the first chamber, and the power devices are located in the upper air duct. The fan's outlet passes through the baffle plate and extends into the upper air duct. The shell has multiple first through holes and multiple second through holes. The first through holes connect the first chamber to the outside, and the second through holes connect the upper air duct to the outside.

[0004] The aforementioned single-fan cooling induction cooker achieves separation of hot and cold air ducts through a baffle: the first cavity serves as the cold air zone, drawing in low-temperature outside air through the first through-hole; the upper air duct becomes the hot air zone due to the heat generated by the power devices. When the fan is running, the low-temperature airflow from the cold air zone is sent into the hot air zone, and finally the hot air is discharged through the second through-hole, thereby achieving effective heat dissipation for the power devices.

[0005] However, although the aforementioned single-fan cooling induction cooker can effectively dissipate heat from power devices, its heat dissipation is limited to power devices such as circuit boards and fails to cover heating devices, resulting in low fan utilization efficiency. Utility Model Content

[0006] In order to overcome the shortcomings and deficiencies of the existing technology, this utility model provides an induction cooker.

[0007] This utility model is achieved through the following technical solution:

[0008] Induction cookers, including:

[0009] The furnace body has an air inlet, a first cavity, an upper air duct, a lower air duct, and an air outlet. The air inlet is connected to the first cavity, which is located on one side of the upper and lower air ducts. The upper air duct is located above the lower air duct, and both the upper and lower air ducts are connected to the air outlet.

[0010] A heating device, wherein the heating device is disposed within the upper air duct;

[0011] A power device, wherein the power device is disposed within the lower air duct and is electrically connected to the heating device; and

[0012] A fan is disposed in the first cavity. The fan is electrically connected to the power device. The air inlet of the fan is connected to the first cavity, and the air outlet of the fan is connected to the upper air duct and the lower air duct. The fan is used to guide outside air to the upper air duct and the lower air duct.

[0013] The induction cooker of this utility model includes a furnace body, a heating element, a power element, and a fan. The furnace body has an independent first cavity, an upper air duct, and a lower air duct. The heating element is located in the upper air duct, and the power element is located in the lower air duct, thereby achieving physical isolation between the heating element and the power element and effectively reducing mutual interference of heat generated during operation. The fan is located in the first cavity, and the air inlet of the fan is connected to the air inlet hole through the first cavity. The air outlet of the fan is connected to both the upper and lower air ducts. During operation, the fan draws in outside air through the air inlet and distributes it to the upper and lower air ducts. The air entering the upper air duct exchanges heat with the heating element and is then discharged through the air outlet. Similarly, the air entering the lower air duct exchanges heat with the power element and is also discharged through the air outlet. This induction cooker utilizes a single fan to simultaneously dissipate heat from both the heating and power elements, improving both the fan's efficiency and overall heat dissipation performance. As a result, the induction cooker can more effectively prevent premature triggering of the protection mechanism due to overheating, enhancing stability and user experience. Furthermore, this single-fan dual-air duct structure eliminates the need for a dual-fan configuration, which helps control costs and reduces the overall height of the unit, better meeting the requirements for miniaturization and ultra-thin design of induction cookers.

[0014] In one embodiment, the air outlet of the fan is directly facing the heating device and the power device, so that the airflow introduced by the fan can be efficiently delivered to the heating device and the power device, thereby improving the heat exchange efficiency.

[0015] In one embodiment, the furnace body includes:

[0016] shell;

[0017] A panel is disposed on the top of the housing, the panel and the housing form an inner cavity, and the panel is located above the heating device;

[0018] A windbreak component, disposed within the housing, dividing the inner cavity into a first cavity and a second cavity; and

[0019] A separating component, disposed on the windproof component, divides the second cavity into the upper air duct and the lower air duct. In this structure, the furnace body divides the inner cavity into a first cavity and a second cavity by setting a windproof component inside the outer shell, and further divides the second cavity into an upper air duct and a lower air duct by the separating component. This structure has a compact layout and achieves modular isolation and precise guidance of airflow channels. It not only ensures that the heating device and power device are located in the upper and lower air ducts respectively without thermal interference, but also enables a single fan to efficiently distribute airflow to both the upper and lower air ducts simultaneously by relying on the first cavity. Thus, while improving heat dissipation efficiency and fan utilization, it effectively controls the overall height and number of components, providing an optimized structural basis for the thinning, low cost and reliable heat dissipation of the induction cooker.

[0020] In one embodiment, the air outlet of the fan passes through the wind-blocking component and the separating component, and the air outlet of the fan extends into the upper air duct and the lower air duct to ensure the stable installation of the fan in the furnace body. At the same time, it allows the airflow to be accurately and efficiently distributed to the upper air duct and the lower air duct with the shortest path and the lowest flow resistance. This not only effectively reduces the energy loss of the airflow at the turning point and improves the fan efficiency and the air pressure at the outlet, but also ensures the stability of the flow distribution ratio between the upper air duct and the lower air duct through physical direct connection, which is conducive to further improving the heat dissipation performance of the whole machine.

[0021] In one embodiment, the power device includes:

[0022] A circuit board is disposed on the furnace body and is electrically connected to the heating device;

[0023] The main heating element is mounted on the circuit board, and the air outlet of the fan faces the main heating element so that the air outlet of the fan is directly opposite the main heating element, shortening the distance between the air outlet of the fan and the main heating element. This allows the airflow to perform precise and efficient heat exchange with the main heating element of the power device, thereby improving the heat exchange efficiency per unit airflow and effectively controlling the core temperature rise of the power device. This not only ensures stable circuit operation and extends the service life of the power device, but also avoids the energy loss problem caused by complex air ducts with a simple and direct structure, thus further improving the overall heat dissipation performance of the machine.

[0024] In one embodiment, the main heating element is located on the side close to the air outlet of the fan, so as to further shorten the distance between the air outlet of the fan and the main heating element, thereby further improving the heat dissipation efficiency.

[0025] In one embodiment, the main heating element is located on the side of the circuit board closer to the heating device. This arrangement makes the main heating device in the power device spatially adjacent to the heating device, which is conducive to integrating the heat dissipation areas of both into a unified and efficient airflow range driven by the same fan. This not only optimizes the spatial direction of the heat dissipation airflow, but also achieves centralized and efficient heat dissipation of the core heat source, thereby effectively improving the overall heat dissipation efficiency and space utilization with a simpler and more compact structure.

[0026] In one embodiment, the power device further includes:

[0027] A heat sink is mounted on a circuit board, and the main heating element is located on the heat sink. By mounting the heat sink on the circuit board and placing the main heating element on it, this structural arrangement utilizes the high thermal conductivity of the heat sink to create an efficient heat transfer path between the main heating element and the airflow. This not only significantly increases the effective heat dissipation area of ​​the main heating element and improves the heat dissipation per unit time, but also effectively avoids localized heat accumulation on the circuit board. This allows for precise temperature control of the main heating element, which is beneficial for improving the stability and reliability of power device operation.

[0028] In one embodiment, the main heating element is located on the side of the heat sink closer to the heating device. This arrangement allows the main heating device in the power device to be spatially adjacent to the heating device, thereby facilitating the integration of their heat dissipation areas into a unified and efficient airflow range driven by the same fan. This not only optimizes the spatial orientation of the heat dissipation airflow but also achieves concentrated and efficient heat dissipation of the core heat source, thereby effectively improving the overall heat dissipation efficiency and space utilization with a simpler and more compact structure.

[0029] In one embodiment, the main heat-generating element includes a rectifier bridge and an IGBT. The rectifier bridge and the IGBT are separated to avoid excessive heat concentration in local areas during operation, thereby improving the temperature uniformity of the heat sink surface. This allows the airflow to simultaneously and evenly dissipate heat from the rectifier bridge and the IGBT, increasing not only the effective heat dissipation area of ​​the heat sink but also the overall heat dissipation efficiency.

[0030] The beneficial effects of this utility model are:

[0031] The induction cooker of this utility model includes a furnace body, a heating element, a power element, and a fan. The furnace body has an independent first cavity, an upper air duct, and a lower air duct. The heating element is located in the upper air duct, and the power element is located in the lower air duct, thereby achieving physical isolation between the heating element and the power element and effectively reducing mutual interference of heat generated during operation. The fan is located in the first cavity, and the air inlet of the fan is connected to the air inlet hole through the first cavity. The air outlet of the fan is connected to both the upper and lower air ducts. During operation, the fan draws in outside air through the air inlet and distributes it to the upper and lower air ducts. The air entering the upper air duct exchanges heat with the heating element and is then discharged through the air outlet. Similarly, the air entering the lower air duct exchanges heat with the power element and is also discharged through the air outlet. This induction cooker utilizes a single fan to simultaneously dissipate heat from both the heating and power elements, improving both the fan's efficiency and overall heat dissipation performance. As a result, the induction cooker can more effectively prevent premature triggering of the protection mechanism due to overheating, enhancing stability and user experience. Furthermore, this single-fan dual-air duct structure eliminates the need for a dual-fan configuration, which helps control costs and reduces the overall height of the unit, better meeting the requirements for miniaturization and ultra-thin design of induction cookers. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of the induction cooker of this utility model;

[0033] Figure 2 This is a cross-sectional view of the induction cooker of this utility model;

[0034] Figure 3 This is a schematic diagram of the internal structure of the induction cooker of this utility model from a first-person perspective;

[0035] Figure 4 This is a schematic diagram of the internal structure of the induction cooker of this utility model from a second-person perspective. (Figure reference numerals)

[0036] 1. Furnace body; 11. Outer shell; 111. Air inlet; 112. Air outlet; 12. Panel; 13. Windproof component; 14. Dividing component; 15. First cavity; 16. Upper air duct; 17. Lower air duct; 2. Heating device; 3. Power device; 31. Circuit board; 32. Main heating element; 321. Rectifier bridge; 322. IGBT; 33. Heat sink; 4. Fan. Detailed Implementation

[0037] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and therefore may vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0038] Please see Figures 1-4 This invention illustrates a preferred embodiment of an induction cooker, comprising:

[0039] Furnace body 1 has an air inlet 111, a first cavity 15, an upper air duct 16, a lower air duct 17 and an air outlet 112. The air inlet 111 is connected to the first cavity 15. The first cavity 15 is located on one side of the upper air duct 16 and the lower air duct 17. The upper air duct 16 is located above the lower air duct 17. Both the upper air duct 16 and the lower air duct 17 are connected to the air outlet 112.

[0040] Heating device 2 is located inside the upper air duct 16;

[0041] Power device 3, located within the downdraft duct 17, is electrically connected to heating device 2; and

[0042] Fan 4 is located inside the first cavity 15. Fan 4 is electrically connected to power device 3. The air inlet of fan 4 is connected to the first cavity 15, and the air outlet of fan 4 is connected to the upper air duct 16 and the lower air duct 17. Fan 4 is used to guide outside air to the upper air duct 16 and the lower air duct 17.

[0043] The induction cooker of this utility model includes a furnace body 1, a heating element 2, a power element 3, and a fan 4. The furnace body 1 has an independent first cavity 15, an upper air duct 16, and a lower air duct 17. The heating element 2 is located in the upper air duct 16, and the power element 3 is located in the lower air duct 17, thereby achieving physical isolation between the heating element 2 and the power element 3 and effectively reducing mutual interference of heat generated during operation. The fan 4 is located in the first cavity 15, and the air inlet of the fan 4 is connected to the air inlet hole 111 through the first cavity 15. The air outlet of the fan 4 is connected to both the upper air duct 16 and the lower air duct 17. During operation, the fan 4 draws in outside air through the air inlet 111 and distributes it to the upper air duct 16 and the lower air duct 17. The air entering the upper air duct 16 exchanges heat with the heating element 2 and is then discharged from the air outlet 112. Similarly, the air entering the lower air duct 17 exchanges heat with the power element 3 and is also discharged from the air outlet 112. This induction cooker utilizes a single fan 4 to simultaneously dissipate heat for both the heating element 2 and the power element 3, which not only improves the utilization efficiency of the fan 4 but also enhances the overall heat dissipation performance. As a result, the induction cooker can more effectively avoid premature triggering of the protection mechanism due to overheating, thus improving the stability and user experience. At the same time, this single-fan 4 dual-air duct structure eliminates the need for a dual-fan 4 configuration, which helps control costs and reduces the overall height of the unit, better meeting the needs of miniaturization and ultra-thin design of induction cookers.

[0044] See Figures 2-4In one embodiment, the air outlet of the fan 4 is directly facing the heating device 2 and the power device 3, so that the airflow introduced by the fan 4 can be efficiently delivered to the heating device 2 and the power device 3, thereby improving the heat exchange efficiency.

[0045] See Figures 1-4 In one embodiment, the furnace body 1 includes:

[0046] Casing 11;

[0047] Panel 12 is located on the top of housing 11, forming an inner cavity with housing 11, and is positioned above heating device 2.

[0048] Windshield component 13, disposed within housing 11, divides the inner cavity into a first cavity 15 and a second cavity; and

[0049] A partition component 14 is disposed on the baffle component 13, dividing the second cavity into an upper air duct 16 and a lower air duct 17. In this structure, the furnace body 1 divides its inner cavity into a first cavity 15 and a second cavity by setting the baffle component 13 inside the outer shell 11, and further divides the second cavity into an upper air duct 16 and a lower air duct 17 by the partition component 14. This structure has a compact layout and realizes modular isolation and precise guidance of airflow channels. It not only ensures that the heating device 2 and the power device 3 are located in the upper and lower air ducts respectively without thermal interference, but also enables a single fan 4 to efficiently distribute airflow to both the upper air duct 16 and the lower air duct 17 simultaneously by relying on the first cavity 15. This improves heat dissipation efficiency and fan 4 utilization while effectively controlling the overall height and number of components, providing an optimized structural basis for the thinness, low cost and reliable heat dissipation of the induction cooker.

[0050] Specifically, the windshield component 13 is a structure formed by the upward protrusion of the inner bottom wall of the outer shell 11. The windshield component 13 and the bottom shell of the outer shell 11 are an integral structure, which is convenient for production and processing.

[0051] Specifically, the partition component 14 is a structure set on the top of the windbreak component 13. The partition component 14 can be connected to the partition component 3 by means of snap-fit ​​connection, threaded connection, welding, etc., so as to facilitate the installation of the power device 3.

[0052] See Figures 2-3In one embodiment, the air outlet of the blower 4 is provided with a wind baffle 13 and a separator 14, and the air outlet of the blower 4 extends into the upper air duct 16 and the lower air duct 17 to ensure the stable installation of the blower 4 in the furnace body 1. At the same time, it enables the airflow to be accurately and efficiently distributed to the upper air duct 16 and the lower air duct 17 with the shortest path and the lowest flow resistance. This not only effectively reduces the energy loss of the airflow at the turning point and improves the efficiency of the blower 4 and the air pressure at the outlet, but also ensures the stability of the flow distribution ratio of the upper air duct 16 and the lower air duct 17 through the direct physical connection, which is conducive to further improving the heat dissipation performance of the whole machine.

[0053] See Figure 2 and Figure 4 In one embodiment, the power device 3 includes:

[0054] Circuit board 31 is disposed on furnace body 1 and is electrically connected to heating device 2.

[0055] The main heating element 32 is mounted on the circuit board 31. The air outlet of the fan 4 faces the main heating element 32, so that the air outlet of the fan 4 is directly opposite the main heating element 32, shortening the distance between the air outlet of the fan 4 and the main heating element 32. This allows the airflow to perform precise and efficient heat exchange with the main heating element 32 of the power device 3, thereby improving the heat exchange efficiency per unit air volume and effectively controlling the core temperature rise of the power device 3. This not only ensures stable circuit operation and extends the service life of the power device 3, but also avoids the energy loss problem caused by complex air ducts with a simple and direct structure, thus further improving the overall heat dissipation performance.

[0056] See Figure 2 and Figure 4 In one embodiment, the main heating element 32 is located on the side close to the air outlet of the fan 4, so as to further shorten the distance between the air outlet of the fan 4 and the main heating element 32, thereby further improving the heat dissipation efficiency.

[0057] See Figure 2 and Figure 4 In one embodiment, the main heating element 32 is located on the side of the circuit board 31 close to the heating device 2. This arrangement makes the main heating device 2 in the power device 3 spatially adjacent to the heating device 2, which is conducive to integrating the heat dissipation areas of the two into a unified and efficient airflow range driven by the same fan 4. This not only optimizes the spatial direction of the heat dissipation airflow, but also realizes the concentrated and efficient heat dissipation of the core heat source, thereby effectively improving the heat dissipation efficiency and space utilization of the whole machine with a simpler and more compact structure.

[0058] See Figure 2 and Figure 4 In one embodiment, the power device 3 further includes:

[0059] Heat sink 33 is mounted on circuit board 31, and main heating element 32 is located on heat sink 33. By mounting heat sink 33 on circuit board 31 and placing main heating element 32 on heat sink 33, this structural arrangement utilizes the high thermal conductivity of heat sink 33 to create an efficient heat transfer path between main heating element 32 and airflow. This not only significantly increases the effective heat dissipation area of ​​main heating element 32 and improves the heat dissipation per unit time, but also effectively avoids local heat accumulation on circuit board 31, thereby achieving precise temperature control of main heating element 32 and improving the stability and reliability of power device 3.

[0060] See Figure 2 and Figure 4 In one embodiment, the main heating element 32 is located on the side of the heat sink 33 close to the heating device 2. This arrangement makes the main heating device 2 in the power device 3 spatially adjacent to the heating device 2, which is conducive to integrating the heat dissipation areas of the two into a unified and efficient airflow range driven by the same fan 4. This not only optimizes the spatial direction of the heat dissipation airflow, but also realizes the concentrated and efficient heat dissipation of the core heat source, thereby effectively improving the overall heat dissipation efficiency and space utilization with a simpler and more compact structure.

[0061] See Figure 4 In one embodiment, the main heat-generating element 32 includes a rectifier bridge 321 and an IGBT 322. The rectifier bridge 321 and the IGBT 322 are spaced apart to avoid excessive heat concentration in local areas during operation. This improves the temperature uniformity of the heat sink 33 surface, allowing the airflow to simultaneously and evenly dissipate heat from the rectifier bridge 321 and the IGBT 322. This not only increases the effective heat dissipation area of ​​the heat sink 33 but also improves the overall heat dissipation efficiency.

[0062] This utility model is not limited to the above-described embodiments. If any modifications or variations to this utility model do not depart from the spirit and scope of this utility model, and if such modifications and variations fall within the scope of the claims and equivalent technologies of this utility model, then this utility model also intends to include such modifications and variations.

Claims

1. An induction cooker, characterized in that, include: Furnace body (1), the furnace body (1) has an air inlet (111), a first cavity (15), an upper air duct (16), a lower air duct (17) and an air outlet (112), the air inlet (111) is connected to the first cavity (15), the first cavity (15) is located on one side of the upper air duct (16) and the lower air duct (17), the upper air duct (16) is located above the lower air duct (17), the upper air duct (16) and the lower air duct (17) are both connected to the air outlet (112); Heating device (2), the heating device (2) is disposed in the upper air duct (16); A power device (3) is disposed in the downdraft duct (17) and is electrically connected to the heating device (2); and A fan (4) is disposed in the first cavity (15). The fan (4) is electrically connected to the power device (3). The air inlet of the fan (4) is connected to the first cavity (15), and the air outlet of the fan (4) is connected to the upper air duct (16) and the lower air duct (17). The fan (4) is used to guide outside air to the upper air duct (16) and the lower air duct (17).

2. The induction cooker according to claim 1, characterized in that, The air outlet of the fan (4) is directly facing the heating device (2) and the power device (3).

3. The induction cooker according to claim 1, characterized in that, The furnace body (1) includes: Outer shell (11); Panel (12), the panel (12) is disposed on the top of the outer shell (11), the panel (12) and the outer shell (11) form an inner cavity, and the panel (12) is located above the heating device (2); A windbreak component (13), wherein the windbreak component (13) is disposed within the outer casing (11), the windbreak component (13) dividing the inner cavity into a first cavity (15) and a second cavity; and A partition (14) is provided on the windproof component (13) and the partition (14) divides the second cavity into the upper air duct (16) and the lower air duct (17).

4. The induction cooker according to claim 3, characterized in that, The air outlet of the fan (4) passes through the windproof component (13) and the partition component (14), and the air outlet of the fan (4) extends into the upper air duct (16) and the lower air duct (17).

5. The induction cooker according to claim 1, characterized in that, The power device (3) includes: Circuit board (31), the circuit board (31) is disposed on the furnace body (1), and the circuit board (31) is electrically connected to the heating device (2); The main heating element (32) is disposed on the circuit board (31), and the air outlet of the fan (4) faces the main heating element (32).

6. The induction cooker according to claim 5, characterized in that, The main heating element (32) is located on one side near the air outlet of the fan (4).

7. The induction cooker according to claim 5, characterized in that, The main heating element (32) is located on the side of the circuit board (31) close to the heating device (2).

8. The induction cooker according to claim 7, characterized in that, The power device (3) also includes: Heat sink (33) is mounted on circuit board (31), and main heating element (32) is located on heat sink (33).

9. The induction cooker according to claim 8, characterized in that, The main heating element (32) is located on the side of the heat sink (33) close to the heating device (2).

10. The induction cooker according to claim 9, characterized in that, The main heating element (32) includes a rectifier bridge (321) and an IGBT (322), wherein the rectifier bridge (321) and the IGBT (322) are separated.

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