Cooking appliance

Abstract

The application discloses a cooking electric appliance, comprising: a shell; an inner container arranged in the shell, a cooking cavity and an opening communicated with the cooking cavity are arranged in the inner container, a first heat dissipation air duct is formed between the inner container and the shell; a door body mounted on the shell for opening or closing the opening, a second heat dissipation air duct is arranged in the door body; at least one electrical component arranged between the shell and the inner container; a heat dissipation assembly arranged between the shell and the inner container, comprising a third heat dissipation air duct and a fan arranged in the third heat dissipation air duct, the third heat dissipation air duct comprises a plurality of air inlets, and the fan is configured to suck air flow from the electrical component, the first heat dissipation air duct and the second heat dissipation air duct through the plurality of air inlets. The structure can realize heat dissipation of the whole machine while targeted heat dissipation of individual large heat generating electrical components and the door body through the same heat dissipation assembly, so that the structure of the whole machine is simplified, the size of the whole machine is reduced, and the reliability of the whole machine is ensured.

Description

Technical Field

[0001] This application belongs to the field of household appliance technology, specifically relating to a cooking appliance. Background Technology

[0002] Kitchen cooking appliances rely on the high-temperature environment of the inner pot to cook food. Therefore, during operation, the electrical components inside the appliance are inevitably subjected to thermal shock from the hot inner pot, leading to malfunctions. Furthermore, some electrical components, such as magnetrons, inverters, and power boards, generate a significant amount of heat and require timely heat dissipation to ensure normal operation. However, the heat dissipation structures in existing solutions are not ideal and cannot effectively dissipate heat from the entire appliance and individual high-heat-generating components simultaneously using simple structures.

[0003] Therefore, designing a solution that is simple in structure and can simultaneously dissipate heat from the entire machine and individual components that generate a lot of heat has become an urgent problem to be solved. Summary of the Invention

[0004] This application aims to solve the problem that the heat dissipation structures of cooking appliances in related solutions are not ideal, and cannot dissipate heat from the whole machine and individual parts with large heat generation through a simple structure.

[0005] To address the aforementioned technical problems, embodiments of this application provide a cooking appliance.

[0006] An embodiment of this application provides a cooking appliance, comprising: a housing; an inner pot disposed within the housing, the inner pot having a cooking cavity and an opening communicating with the cooking cavity, a first heat dissipation duct forming between the inner pot and the housing; a door mounted on the housing for opening or closing the opening, the door having a second heat dissipation duct; at least one electrical component disposed between the housing and the inner pot; and a heat dissipation assembly disposed between the housing and the inner pot, including a third heat dissipation duct and a fan disposed within the third heat dissipation duct, the third heat dissipation duct including multiple air intakes, the fan configured to draw in airflow through the multiple air intakes; wherein the multiple air intakes include a second air intake, a third air intake, and at least one first air intake, the at least one first air intake corresponding to at least one electrical component, the airflow flowing through the first air intake being able to exchange heat with its corresponding electrical component, the second air intake communicating with the first heat dissipation duct, and the third air intake communicating with the second heat dissipation duct when the door is closed.

[0007] The cooking appliance provided in this application includes a shell, an inner pot, at least one electrical component, and a heat dissipation assembly. The shell has an air inlet, and the inner pot is placed inside the shell to form a cooking cavity. A first heat dissipation duct is formed between the inner pot and the shell to dissipate heat from the entire appliance. The electrical component is located between the shell and the inner pot, and may specifically be at least one of a power board, oven light, camera, magnetron, inverter, etc. The heat dissipation assembly is also located between the shell and the inner pot and includes a third heat dissipation duct, a fan, and multiple air intakes. The first air intake is directly opposite the electrical component and can draw air from it under the action of the fan. There can be one or more first air intakes, the number of which can be reasonably set according to the number of electrical components requiring targeted heat dissipation. The second air intake is connected to the first heat dissipation duct and can draw air from it under the action of the fan to remove heat between the shell and the inner pot, achieving heat dissipation for the entire appliance. The third air intake is used to draw air from the outside through a second heat dissipation channel inside the door (extending from the bottom to the top of the door). The third heat dissipation duct draws in air through multiple air inlets and discharges it to the outside of the casing through its outlet.

[0008] In this structure, the first air intake is directed to the electrical components, quickly removing the large amount of heat generated during operation and preventing performance degradation due to overheating, thus ensuring the stability of the electrical components. The second air intake is connected to the first heat dissipation duct, which can promptly exhaust heat around the inner liner, achieving heat dissipation for the inner liner and other components between the outer shell and the inner liner (i.e., overall heat dissipation). The third air intake is used to draw air from the outside through the door, cooling the door itself.

[0009] This design, with multiple air intakes connected to the first, third, and second heat dissipation ducts within the door, creates a comprehensive heat dissipation system. This system allows for targeted cooling of specific heat-generating electrical components and the door itself, all through a single heat dissipation component. This method requires only one heat dissipation component, eliminating the need for multiple cooling structures and simplifying the overall design. This simplifies the overall structure, reduces the size of the device, and ensures its reliability.

[0010] In any of the above embodiments, optionally, the third heat dissipation air duct further includes an air outlet duct and a plurality of independently arranged air guide ducts. One end of the air guide duct is provided with an air intake, and the other end of the air guide duct extends to the fan. The air guide duct is configured to guide external airflow into the fan through its corresponding air intake. The inlet of the air outlet duct is located on the air outlet side of the fan. The air outlet duct is configured to guide the airflow generated by the fan to the outside of the cooking appliance.

[0011] In this embodiment, the third heat dissipation duct includes an exhaust duct and multiple independently arranged air guide ducts. The inlet of each air guide duct constitutes an air intake. The exhaust end of each air guide duct is arranged corresponding to the air intake side of the fan, so that the fan can draw external airflow into the fan through multiple air guide ducts. The airflow entering the multiple air guide ducts is finally discharged from the exhaust duct.

[0012] The system employs multiple independently designed air ducts, which isolate the airflow drawn in from each air intake from each other, preventing interference between the airflows drawn in from multiple air intakes. This allows each air duct to perform directional airflow guidance, thereby achieving directional heat dissipation in the corresponding area.

[0013] In any of the above embodiments, optionally, an air gap is provided between the outer casing and the door along the height direction of the cooking appliance, and the third heat dissipation duct also includes an air outlet duct, the inlet of which is located on the air outlet side of the fan, and the air outlet duct is configured to guide the airflow generated by the fan to the air gap.

[0014] In this embodiment, the outlet of the air outlet duct is positioned corresponding to the air gap between the outer casing and the door, allowing the airflow discharged from the air outlet duct to flow to the outside of the cooking appliance through the air gap. That is, the outlet of the entire heat dissipation assembly is located close to the door, which avoids obstruction of the heat dissipation assembly's outlet and makes heat dissipation smoother. Especially when this heat dissipation structure is applied to embedded products, the overall heat dissipation effect is better when air is discharged from the side of the door.

[0015] The outer casing includes a control panel, which is positioned at the top of the door along its height, forming a ventilation gap between the control panel and the door. Airflow from the third heat dissipation channel is discharged to the outside of the cooking appliance through this ventilation gap.

[0016] In any of the above embodiments, the third heat dissipation air duct may optionally include a third air guide channel, one end of which is provided with a third air intake, and the other end of which extends to the fan. The third air guide channel is configured to guide external airflow through the second heat dissipation air duct and the third air intake into the fan.

[0017] In this embodiment, for the third heat dissipation duct of the door, the heat dissipation component is provided with an independent third air guide channel, so as to avoid the airflow drawn in through the door from interfering with the airflow drawn in from other locations.

[0018] In any of the above embodiments, optionally, the heat dissipation component further includes: a duct base plate; a duct partition plate disposed on the duct base plate, forming a third air guide channel with the duct base plate; and a duct cover plate disposed on the side of the duct partition plate away from the duct base plate, forming an air outlet channel with the duct partition plate.

[0019] In this embodiment, the heat dissipation assembly includes a base plate, a baffle plate, and a cover plate. The baffle plate is disposed between the base plate and the cover plate, dividing the space enclosed by the base plate and the cover plate into an independent outlet channel and a third air guide channel. This structure allows for the simple and convenient formation of the third air guide channel and the outlet channel, resulting in a relatively simple structure for the heat dissipation assembly.

[0020] Furthermore, along the vertical direction, the air outlet is located above the third heat dissipation air duct.

[0021] In any of the above embodiments, optionally, the heat dissipation assembly further includes: an air guide cover plate disposed on the air duct cover plate, forming at least one first air guide channel and a second air guide channel with the air duct cover plate, one end of the first air guide channel being provided with a first air intake, the other end of the first air guide channel extending to a fan, the first air guide channel being configured to guide external airflow through the first air intake to enter the fan, one end of the second air guide channel being provided with a second air intake, the other end of the second air guide channel extending to a fan, the second air guide channel being configured to guide airflow in the first heat dissipation air duct through the second air intake to enter the fan; the fan is rotatably mounted between the air guide cover plate and the air duct cover plate.

[0022] In this embodiment, the heat dissipation assembly includes an air guide cover and an air duct plate assembly. The air guide cover and the air duct plate assembly form a first air guide channel and a second air guide channel. The air duct plate assembly consists of an air duct base plate, an air duct partition, and an air duct cover plate. Specifically, the air guide cover can directly form the first and second air passage channels with the air duct cover plate; alternatively, the air guide cover can also form the first and second air passage channels with the air duct base plate. Furthermore, the first and second air passage channels are independently configured. A fan is installed between the air guide cover and the air duct plate assembly; when the fan rotates, it draws air through each air guide channel.

[0023] In any of the above embodiments, the heat dissipation assembly may optionally include: a motor bracket disposed between the air guide cover and the air duct cover; and a motor mounted on the motor bracket and connected to the fan for driving the fan to rotate.

[0024] In this embodiment, the motor bracket is used to support and mount the motor. The motor drives the fan to rotate, and most of the motor's structure is located between the air guide cover and the air duct plate assembly. The motor shaft can partially extend outside the air duct plate assembly to facilitate the fixed installation of the motor shaft. In specific designs, the motor bracket can exist independently of the air duct cover (or air duct base plate), or the air duct cover (or air duct base plate) and the motor bracket can be set as an integral structure. The two can be welded together or formed as a single piece (in this case, it can also be understood that the motor bracket is eliminated, and the motor is directly mounted on the air duct cover or air duct base plate).

[0025] Optionally, the outlet of the third heat dissipation air duct, which is also the outlet of the air outlet channel, is surrounded by an air duct baffle and an air duct cover. Of course, the outlet can also be a through hole directly set on the air duct baffle and / or the air duct cover.

[0026] In any of the above embodiments, optionally, the rotation axis of the fan is set along the height direction of the cooking appliance, and the fan is a centrifugal fan.

[0027] In this embodiment, the fan is horizontally mounted with its rotation axis L vertically positioned. The fan is a centrifugal fan, capable of drawing in air axially and discharging it outwards. The centrifugal fan generates significant air pressure, creating a stable and strong airflow between the outer casing and inner liner, as well as within the third heat dissipation duct, thus improving the overall heat dissipation of the cooking appliance.

[0028] In any of the above embodiments, optionally, the air guide cover includes a mounting part and at least two air guide parts connected to the mounting part. The at least two air guide parts are arranged at intervals along the circumference of the mounting part and form at least two first air guide channels with the air duct cover. A second air intake is provided on the mounting part, and a fan is installed between the mounting part and the air duct cover.

[0029] In this embodiment, the mounting section can better accommodate the installation of the fan. At least two air guide sections can form a relatively independent first air guide channel with the air duct base plate to achieve directional air intake. At the same time, a second air intake can be directly provided on the mounting section to form an independent air guide channel (second air guide channel) to draw air from between the outer shell and the inner liner. The mounting section can be circular or near-circular.

[0030] In any of the above embodiments, optionally, at least one electrical component includes a magnetron disposed between the outer shell and the inner liner, communicating with the cooking cavity to deliver microwaves to the cooking cavity; and / or at least one electrical component includes an electronic control board for supplying power to the cooking appliance and / or controlling the operation of the cooking appliance; and / or at least one electrical component includes a frequency converter for controlling the operation of the magnetron.

[0031] In this embodiment, the cooking appliance also includes a magnetron, which delivers microwaves into the cooking cavity to achieve microwave heating. Since the magnetron generates a significant amount of heat, including it in the electrical components allows for focused heat dissipation, ensuring effective heat dissipation.

[0032] The magnetron has a heat dissipation channel inside, and the first air intake corresponding to the magnetron can be set on one side of the magnetron and connected to its internal heat dissipation channel so that air can be drawn directly from the magnetron. This arrangement eliminates the need to place the magnetron inside the third heat dissipation channel, making the magnetron placement easier.

[0033] Cooking appliances may also include an electronic control board, which can power the product and / or control the operation of the entire product. As the key target for heat dissipation, the electronic control board can be designed with a dedicated first air intake on the third heat dissipation duct, so that the third heat dissipation duct can draw air towards the electronic control board, thereby significantly improving the heat dissipation effect of the electronic control board.

[0034] Cooking appliances may also include inverters. During the design phase, a dedicated first air intake can be provided for the inverter on the third cooling duct, allowing the third cooling duct to draw air directly at the inverter, significantly improving the heat dissipation of the control board.

[0035] In any of the above embodiments, optionally, the outer casing is provided with at least two air inlets, some of the air inlets are connected to the first heat dissipation duct, and the other part of the air inlets are connected to at least one first air intake; or the outer casing is provided with air inlets, the air inlets are connected to the first heat dissipation duct, and at least one first air intake is connected to the first heat dissipation duct.

[0036] In this embodiment, the outer casing is provided with air inlets. These air inlets allow external cold air to enter the interior of the casing. Multiple air inlets can be provided. In one specific embodiment, some air inlets can be directly connected to the first air intake, allowing external cold air to directly pass through the magnetron, control board, inverter, etc., improving heat dissipation for these components. Simultaneously, other air inlets can be connected to the gap between the outer casing and the inner liner (the first heat dissipation duct), enabling cold air to dissipate heat from the inner liner and other components between the outer casing and the inner liner.

[0037] In another specific design, all air inlets are connected to the gap between the outer shell and the inner liner (the first heat dissipation duct), and all air intakes draw air from the first heat dissipation duct. External cold air first enters the space between the outer shell and the inner liner, and then is drawn into the third heat dissipation duct through the various air intakes.

[0038] Furthermore, at least some of the two air inlets are provided with a connecting channel to the first air intake, so that some of the air inlets can be directly connected to the first air intake.

[0039] In any of the above embodiments, optionally, electrical components and / or heat dissipation components are disposed at the top of the inner pot along the height direction of the cooking appliance, and a third heat dissipation duct is disposed along the front-rear direction of the cooking appliance. Along the front-rear direction of the cooking appliance, at least one first air intake is located behind the outlet of the third heat dissipation duct.

[0040] In this embodiment, for the oven, the heat dissipation of its inner cavity is concentrated at the top. Therefore, placing the heat dissipation component at the top of the inner cavity enables strong heat dissipation at the top, thereby ensuring the overall heat dissipation effect of the machine. Simultaneously, the third heat dissipation duct is arranged in the front-to-back direction, allowing air to exit towards the door, which facilitates an embedded structure for the product. At least one first air intake is located behind the outlet of the third heat dissipation duct, making the first air intake relatively rearward, thus facilitating the installation of electrical components away from the door.

[0041] In any of the above embodiments, the cooking appliance may optionally include: a steam generator for supplying steam into the cooking cavity; and / or a heating element installed in the cooking cavity; and / or a hot air assembly for generating hot air in the cooking cavity.

[0042] In this embodiment, the cooking appliance can be a single microwave heating appliance, such as a regular microwave oven. It can also be a microwave-steam cooking appliance combining microwave and steam, in which case the appliance further includes microwave components such as a magnetron and inverter, as well as a steam generator. Furthermore, the cooking appliance can be a microwave oven, in which case it includes a heating element for baking and microwave components for microwave heating. Of course, the cooking appliance can also be a composite appliance combining microwave, steam, and baking functions.

[0043] In addition, cooking appliances may include a hot air assembly to heat food with hot air.

[0044] The cooking appliances can be ovens (including convection ovens and radiant ovens), microwave ovens, steam ovens, or combination microwave-steam-oven machines.

[0045] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0046] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0047] Figure 1 This is one of the structural schematic diagrams of a cooking appliance according to an embodiment of this application;

[0048] Figure 2 This is a second schematic diagram of the structure of a cooking appliance according to an embodiment of this application;

[0049] Figure 3 This is the third schematic diagram of the structure of a cooking appliance according to an embodiment of this application;

[0050] Figure 4 This is the fourth schematic diagram of the structure of a cooking appliance according to an embodiment of this application;

[0051] Figure 5 This is the fifth schematic diagram of the structure of a cooking appliance according to an embodiment of this application;

[0052] Figure 6 yes Figure 5 Schematic diagram of the cross-sectional structure along the AA direction;

[0053] Figure 7 This is the sixth schematic diagram of the structure of a cooking appliance according to an embodiment of this application;

[0054] Figure 8 This is the seventh schematic diagram of the structure of a cooking appliance according to an embodiment of this application;

[0055] Figure 9 This is one of the structural schematic diagrams of a heat dissipation component of a cooking appliance according to an embodiment of this application;

[0056] Figure 10 This is a second schematic diagram of the structure of a heat dissipation component of a cooking appliance according to an embodiment of this application;

[0057] Figure 11 This is a third schematic diagram of the structure of a heat dissipation component of a cooking appliance according to an embodiment of this application;

[0058] Figure 12 This is a fourth schematic diagram of the structure of a heat dissipation component of a cooking appliance according to an embodiment of this application;

[0059] Figure 13 This is the fifth schematic diagram of the structure of the heat dissipation component of a cooking appliance according to an embodiment of this application;

[0060] Figure 14 This is a sixth schematic diagram of the structure of a heat dissipation component of a cooking appliance according to an embodiment of this application;

[0061] Figure 15 This is the seventh schematic diagram of the heat dissipation assembly of a cooking appliance according to an embodiment of this application;

[0062] Figure 16 This is the eighth schematic diagram of the structure of the heat dissipation component of a cooking appliance according to an embodiment of this application;

[0063] Figure 17 This is the ninth schematic diagram of the structure of the heat dissipation component of a cooking appliance according to an embodiment of this application;

[0064] Figure 18 This is the tenth schematic diagram of the structure of the heat dissipation assembly of a cooking appliance according to an embodiment of this application;

[0065] Figure 19 yes Figure 18 Schematic diagram of the cross-sectional structure along the BB direction;

[0066] Figure 20This is eleventh of the structural schematic diagrams of the heat dissipation assembly of a cooking appliance according to an embodiment of this application;

[0067] Figure 21 This is 12th of a schematic diagram of the structure of a heat dissipation component of a cooking appliance according to an embodiment of this application;

[0068] Figure 22 This is thirteenth of a schematic diagram of the structure of a heat dissipation component of a cooking appliance according to an embodiment of this application;

[0069] Figure 23 This is the fourteenth schematic diagram of the structure of the heat dissipation assembly of a cooking appliance according to an embodiment of this application;

[0070] Figure 24 This is one of the simplified schematic diagrams of a partial structure of a cooking appliance according to an embodiment of this application;

[0071] Figure 25 This is a second simplified schematic diagram of a partial structure of a cooking appliance according to an embodiment of this application.

[0072] The accompanying figure is labeled as follows:

[0073] 1. Outer shell, 12. Air inlet, 14. Control panel, 2. Inner liner, 22. Cooking cavity, 24. Opening, 3. Electrical components, 32. Magnetron, 34. Inverter, 36. Control board, 4. Heat dissipation assembly, 40. Third heat dissipation duct, 402. Outlet, 412. First air intake, 414. Second air intake, 416. Third air intake, 42. Duct bottom plate, 43. Air guide cover, 432. Mounting part, 434. Air guide part, 44. Air guide channel, 442. First air guide channel, 444. Second air guide channel, 446. Third air guide channel, 45. Duct cover, 46. Air outlet channel, 47. Fan, 482. Motor bracket, 484. Motor, 49. Duct partition, 5. Air passage gap, 6. Connecting channel, 7. First heat dissipation duct, 8. Door, 80. Second heat dissipation duct, 92. Steam generator, 94. Heating element, 96. Hot air assembly. Detailed Implementation

[0074] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0075] The cooking appliance according to an embodiment of this application will now be described with reference to the accompanying drawings.

[0076] like Figures 1 to 25As shown, an embodiment of this application provides a cooking appliance, including a housing 1, an inner pot 2, at least one electrical component 3, and a heat dissipation assembly 4. The housing 1 is the exterior component of the entire product. The inner pot 2 is disposed inside the housing 1, and the inner pot 2 has a cooking cavity 22 and an opening 24 communicating with the cooking cavity 22. A first heat dissipation duct 7 is formed between the inner pot 2 and the housing 1. A door 8 is mounted on the housing 1 for opening or closing the opening 24, and a second heat dissipation duct 80 is disposed inside the door 8. At least one electrical component 3 is disposed between the housing 1 and the inner pot 2. The heat dissipation assembly 4 is disposed between the housing 1 and the inner pot 2, and the heat dissipation assembly 4 includes a third heat dissipation duct 40 and a fan 47 disposed within the third heat dissipation duct 40. The third heat dissipation duct 40 includes multiple air intakes, and the fan 47 is configured to draw in airflow through the multiple air intakes. Multiple air intakes include a second air intake 414, a third air intake 416, and at least one first air intake 412. At least one first air intake 412 is configured in a one-to-one correspondence with at least one electrical component 3. The airflow flowing through the first air intake 412 can exchange heat with the corresponding electrical component 3. The second air intake 414 is connected to the first heat dissipation duct 7. When the door 8 closes the opening 24, the third air intake 416 is connected to the second heat dissipation duct 80.

[0077] The cooking appliance provided in this application includes a shell 1, an inner pot 2, at least one electrical component 3, and a heat dissipation assembly 4. The shell 1 has an air inlet, and the inner pot 2 is placed inside the shell 1 to form a cooking cavity 22. A first heat dissipation duct 7 is formed between the inner pot 2 and the shell 1, which is used to dissipate heat from the entire appliance. The electrical component 3 is located between the shell 1 and the inner pot 2, and may specifically be at least one of a power board, oven light, camera, magnetron 32, inverter 34, etc. The heat dissipation assembly 4 is also located between the shell 1 and the inner pot 2, and includes a third heat dissipation duct 40, a fan 47, and multiple air intakes. The first air intake 412 faces the electrical component 3 and can draw air from the electrical component 3 under the action of the fan 47. The number of first air intakes 412 can be one or more, and their number can be reasonably set according to the number of electrical components 3 that require targeted heat dissipation. The second air intake 414 is connected to the first heat dissipation duct 7 and can draw air from the first heat dissipation duct 7 under the action of the fan 47 to remove the heat between the outer shell 1 and the inner liner 2, thereby achieving heat dissipation for the entire machine. The third air intake 416 is used to draw air from the outside through the second heat dissipation channel inside the door 8. The airflow drawn into the third heat dissipation duct 40 through multiple air intakes is discharged to the outside of the outer shell 1 through its outlet 402.

[0078] In this structure, the first air intake 412 directs airflow to the electrical components 3, quickly removing the large amount of heat generated during operation and preventing performance degradation due to overheating, thus ensuring the operational stability of the electrical components 3. The second air intake 414 connects to the first heat dissipation duct 7, allowing for timely exhaust of heat from the surrounding area of ​​the inner liner 2, achieving heat dissipation for the inner liner 2 and other components between the outer shell 1 and the inner liner 2 (i.e., overall machine heat dissipation). The third air intake 416 draws air from the outside through the door 8, cooling the door 8.

[0079] This design, with multiple air intakes connected to the first cooling duct 7, the third cooling duct 40, and the second cooling duct 80 within the door 8, creates a comprehensive heat dissipation system. This system allows for targeted cooling of specific high-heat electrical components 3 and the door 8 through a single heat dissipation component 4, while simultaneously cooling the entire machine. This cooling method requires only one heat dissipation component 4, eliminating the need for multiple cooling structures. This simplifies the overall cooling structure of the product, reducing its size and ensuring its reliability.

[0080] In any of the above embodiments, optionally, as Figures 9 to 24 As shown, the third heat dissipation air duct 40 also includes an air outlet duct 46 and multiple independently arranged air guide ducts 44. One end of the air guide duct 44 is provided with an air intake, and the other end of the air guide duct 44 extends to the fan 47. The air guide duct 44 is configured to guide external airflow into the fan 47 through its corresponding air intake. The inlet of the air outlet duct 46 is located on the air outlet side of the fan 47. The air outlet duct 46 is configured to guide the airflow generated by the fan 47 to the outside of the cooking appliance.

[0081] In this embodiment, the third heat dissipation duct 40 includes an air outlet duct 46 and multiple independently arranged air guide ducts 44. The inlet of each air guide duct 44 constitutes an air intake. The air outlet of each air guide duct 44 is arranged corresponding to the air inlet side of the fan 47, so that the fan 47 can draw external airflow into the fan 47 through the multiple air guide ducts 44. The airflow entering the multiple air guide ducts 44 is finally discharged from the air outlet duct 46.

[0082] The multiple independently configured air guide channels 44 isolate the airflow drawn in from each air intake from each other, preventing interference between the airflows drawn in from multiple air intakes. This allows each air guide channel 44 to perform directional airflow guidance, thereby achieving directional heat dissipation in the corresponding area.

[0083] In any of the above embodiments, optionally, as Figure 1 , Figure 5 and Figure 6As shown, along the height direction of the cooking appliance, an air gap 5 is provided between the outer casing 1 and the door 8. The third heat dissipation duct 40 also includes an air outlet duct 46. The inlet of the air outlet duct 46 is located on the air outlet side of the fan 47. The air outlet duct 46 is configured to guide the airflow generated by the fan 47 to the air gap 5.

[0084] In this embodiment, the outlet of the air outlet 46 is positioned corresponding to the air gap 5 between the outer casing 1 and the door 8, allowing the airflow discharged from the air outlet 46 to flow to the outside of the cooking appliance through the air gap. That is, the outlet 402 of the entire heat dissipation assembly 4 is positioned close to the door 8, thus preventing the outlet 402 of the heat dissipation assembly 4 from being blocked and making heat dissipation smoother. Especially when this heat dissipation structure is applied to embedded products, the overall heat dissipation effect is better when air is discharged from the side of the door 8.

[0085] The outer casing 1 includes a control panel 14, which is positioned at the top of the door 8 along its height, forming a ventilation gap 5 between the control panel 14 and the door 8. The airflow from the third heat dissipation channel is discharged to the outside of the cooking appliance through the ventilation gap 5.

[0086] in, Figure 6 In the diagram, the dashed arrows indicate the airflow path within the third air guide channel 446, while the solid arrows indicate the airflow path within the air outlet channel 46.

[0087] In any of the above embodiments, optionally, as Figure 6 and Figure 10 As shown, the third heat dissipation air duct 40 also includes a third air guide channel 446. One end of the third air guide channel 446 is provided with a third air intake 416, and the other end of the third air guide channel 446 extends to the fan 47. The third air guide channel 446 is configured to guide external airflow through the second heat dissipation air duct 80 and the third air intake 416 into the fan 47.

[0088] In this embodiment, for the third heat dissipation duct 40 of the door body 8, the heat dissipation component 4 is provided with an independent third air guide channel 446, so as to avoid the airflow drawn in through the door body 8 from interfering with the airflow drawn in from other locations.

[0089] In any of the above embodiments, optionally, as Figures 9 to 23 As shown, the heat dissipation component 4 also includes: a duct base plate 42; a duct partition 49, which is disposed on the duct base plate 42 and forms a third air guide channel 446 with the duct base plate 42; and a duct cover plate 45, which is disposed on the side of the duct partition 49 away from the duct base plate 42 and forms an air outlet channel 46 with the duct partition 49.

[0090] In this embodiment, the heat dissipation assembly 4 includes an air duct base plate 42, an air duct baffle 49, and an air duct cover plate 45. The air duct baffle 49 is disposed between the air duct base plate 42 and the air duct cover plate 45, dividing the space enclosed by the air duct base plate 42 and the air duct cover plate 45 into two independent air outlet channels 46 and a third air guide channel 446. This structure allows for the simple and convenient formation of the third air guide channel 446 and the air outlet channel 46, resulting in a relatively simple structure for the heat dissipation assembly 4.

[0091] Furthermore, along the height direction, the air outlet duct 46 is located above the third heat dissipation duct 40.

[0092] In any of the above embodiments, optionally, as Figures 9 to 23 As shown, the heat dissipation assembly 4 also includes: an air guide cover 43, disposed on the air duct cover 45, forming at least one first air guide channel 442 and a second air guide channel 444 with the air duct cover 45; one end of the first air guide channel 442 is provided with a first air intake 412, and the other end of the first air guide channel 442 extends to the fan 47; the first air guide channel 442 is configured to guide external airflow through the first air intake 412 into the fan 47; one end of the second air guide channel 444 is provided with a second air intake 414, and the other end of the second air guide channel 444 extends to the fan 47; the second air guide channel 444 is configured to guide airflow in the first heat dissipation air duct 7 through the second air intake 414 into the fan 47; the fan 47 is rotatably mounted between the air guide cover 43 and the air duct cover 45.

[0093] In this embodiment, the heat dissipation assembly 4 includes an air guide cover 43 and an air duct plate assembly. The air guide cover 43 and the air duct plate assembly form a first air guide channel 442 and a second air guide channel 444. The air duct plate assembly consists of an air duct base plate 42, an air duct partition 49, and an air duct cover 45. Specifically, the air guide cover 43 can directly form the first and second air passages with the air duct cover 45; alternatively, the air guide cover 43 can also form the first and second air passages with the air duct base plate 42. Furthermore, the first and second air passages are independently configured. A fan 47 is installed between the air guide cover 43 and the air duct plate assembly. When the fan 47 rotates, it draws air through each air guide channel 44.

[0094] In any of the above embodiments, optionally, as Figures 9 to 23 As shown, the heat dissipation assembly 4 also includes: a motor bracket 482, which is disposed between the air guide cover 43 and the air duct cover 45; and a motor 484, which is mounted on the motor bracket 482 and connected to the fan 47 for driving the fan 47 to rotate.

[0095] In this embodiment, the motor bracket 482 is used to support and mount the motor 484. The motor 484 is used to drive the fan 47 to rotate, and most of the structure of the motor 484 is located between the air guide cover 43 and the air duct plate assembly. The shaft of the motor 484 can partially extend outside the air duct plate assembly to facilitate the fixed installation of the motor 484 shaft. In specific design, the motor bracket 482 can exist independently of the air duct cover 45 (or air duct base plate 42), or the air duct cover 45 (or air duct base plate 42) and the motor bracket 482 can be set as an integral structure. The two can be welded together or formed as one piece (in this case, it can also be understood that the motor bracket 482 is eliminated and the motor 484 is directly mounted on the air duct cover 45 or air duct base plate 42).

[0096] Optionally, the outlet 402 of the third heat dissipation air duct 40, which is also the outlet of the air outlet duct 46, is surrounded by the air duct baffle 49 and the air duct cover 45. Of course, the outlet 402 can also be a through hole directly provided on the air duct baffle 49 and / or the air duct cover 45.

[0097] In any of the above embodiments, optionally, as Figure 17 , Figure 18 and Figure 19 As shown, the rotation axis of fan 47 is set along the height direction of the cooking appliance, and fan 47 is a centrifugal fan.

[0098] In this embodiment, the fan 47 is horizontally mounted, with its rotation axis L vertically positioned. The fan 47 is a centrifugal fan, capable of drawing in air axially and discharging it outwards. The centrifugal fan generates significant air pressure, causing a stable and strong airflow between the outer casing 1 and the inner liner 2, as well as within the third heat dissipation duct 40, thus improving the overall heat dissipation effect of the cooking appliance.

[0099] In any of the above embodiments, optionally, as Figure 9 , Figure 10 , Figure 16 , Figure 17 and Figure 19 As shown, the air guide cover 43 includes a mounting part 432 and at least two air guide parts 434 connected to the mounting part 432. The at least two air guide parts 434 are arranged at intervals along the circumference of the mounting part 432 and form at least two first air guide channels 442 with the air duct cover 45. A second air intake 414 is provided on the mounting part 432, and a fan 47 is installed between the mounting part 432 and the air duct cover 45.

[0100] In this embodiment, the mounting portion 432 can better accommodate the installation of the fan 47. At least two air guide portions 434 can form a relatively independently configured first air guide channel 442 with the air duct base plate 42 to achieve directional air intake. At the same time, a second air intake 414 can be directly provided on the mounting portion 432 to form an independent air guide channel 44 (second air guide channel 444) to draw air from between the outer shell 1 and the inner liner 2. The mounting portion 432 can be circular or near-circular.

[0101] In any of the above embodiments, optionally, as Figure 24 As shown, at least one electrical component 3 includes a magnetron 32, which is disposed between the outer shell 1 and the inner liner 2 and communicates with the cooking cavity 22 to deliver microwaves to the cooking cavity 22; and / or at least one electrical component 3 includes an electronic control board 36, which is used to supply power to the cooking appliance and / or control the operation of the cooking appliance; and / or at least one electrical component 3 includes a frequency converter 34, which is used to control the operation of the magnetron 32.

[0102] In this embodiment, the cooking appliance also includes a magnetron 32, which can deliver microwaves into the cooking cavity 22 to achieve microwave heating. Since the magnetron 32 generates a significant amount of heat, including it in the electrical component 3 allows for focused heat dissipation of the magnetron 32, ensuring its effective heat dissipation.

[0103] The magnetron 32 has a heat dissipation channel inside, and the first air intake 412 corresponding to the magnetron 32 can be set on one side of the magnetron 32 and connected to its internal heat dissipation channel so that air can be drawn directly from the magnetron 32. This arrangement eliminates the need to place the magnetron 32 inside the third heat dissipation channel 40, which is more conducive to the arrangement of the magnetron 32.

[0104] Cooking appliances may also include an electronic control board 36, which can supply power to the product and / or control the operation of the entire product. As the key target for heat dissipation, the electronic control board 36 may be designed with a dedicated first air intake 412 on the third heat dissipation duct 40, so that the third heat dissipation duct 40 can draw air from the electronic control board 36, thereby significantly improving the heat dissipation effect of the electronic control board 36.

[0105] Cooking appliances may also include an inverter 34. In the design, a dedicated first air intake 412 may be provided on the third heat dissipation duct 40 for the inverter 34, so that the third heat dissipation duct 40 can draw air from the inverter 34, thereby significantly improving the heat dissipation effect of the electronic control board 36.

[0106] In any of the above embodiments, optionally, as Figure 1 , Figure 2 , Figure 3 and Figure 7As shown, the outer casing 1 is provided with at least two air inlets 12, some of the air inlets 12 are connected to the first heat dissipation duct 7, and the other part of the air inlets 12 are connected to at least one first air intake 412; or the outer casing 1 is provided with air inlets 12, the air inlets 12 are connected to the first heat dissipation duct 7, and at least one first air intake 412 is connected to the first heat dissipation duct 7.

[0107] In this embodiment, the outer casing 1 is provided with air inlets 12. The air inlets 12 are used to allow external cold air to enter the interior of the outer casing 1. Multiple air inlets 12 can be provided. In one specific embodiment, some air inlets 12 can be directly connected to the first air intake 412, allowing external cold air to directly pass through the magnetron 32, the control board 36, the frequency converter 34, etc., improving heat dissipation for these components. Simultaneously, other air inlets 12 can be connected to the gap between the outer casing 1 and the inner liner 2 (the first heat dissipation duct 7), enabling cold air to dissipate heat from the inner liner 2 and other components between the outer casing 1 and the inner liner 2.

[0108] In another specific embodiment, all air inlets 12 are connected to the gap between the outer shell 1 and the inner liner 2 (first heat dissipation duct 7), and all air intakes draw air from the first heat dissipation duct 7. External cold air first enters the space between the outer shell 1 and the inner liner 2, and then is drawn into the third heat dissipation duct 40 from each air intake.

[0109] Furthermore, a connecting channel 6 is provided between a portion of the at least two air inlets 12 and the first air intake 412, so that the portion of the air inlets 12 can be directly connected to the first air intake 412.

[0110] In any of the above embodiments, optionally, as Figure 2 , Figure 4 and Figure 6 As shown, along the height direction of the cooking appliance, the electrical component 3 and / or the heat dissipation component 4 are disposed on the top of the inner liner 2, and the third heat dissipation duct 40 is disposed along the front-back direction of the cooking appliance. Along the front-back direction of the cooking appliance, at least one first air intake 412 is located on the rear side of the outlet 402 of the third heat dissipation duct 40.

[0111] In this embodiment, for the oven, the heat dissipation of its inner cavity 2 is concentrated at the top. Therefore, placing the heat dissipation component 4 at the top of the inner cavity 2 can effectively dissipate heat from the top of the inner cavity 2, thereby ensuring the overall heat dissipation effect of the oven. Simultaneously, the third heat dissipation duct 40 is arranged in the front-to-back direction, allowing air to exit towards the door 8, which facilitates the product's embedded structure. At least one first air intake vent 412 is located behind the outlet 402 of the third heat dissipation duct 40, making the first air intake vent 412 relatively rearward, thus facilitating the installation of electrical components 3 away from the door 8.

[0112] In any of the above embodiments, optionally, as Figure 25 As shown, the cooking appliance also includes: a steam generator 92 for supplying steam into the cooking cavity 22; and / or a heating element 94 installed in the cooking cavity 22; and / or a hot air assembly 96 for generating hot air in the cooking cavity 22.

[0113] In this embodiment, the cooking appliance can be a single microwave heating appliance, such as a regular microwave oven. It can also be a microwave-steam cooking appliance combining microwave and steam, in which case the appliance further includes microwave components such as a magnetron 32 and a frequency converter 34, as well as a steam generator 92. Furthermore, the cooking appliance can also be a microwave oven, in which case it includes a heating element 94 for baking and microwave components for microwave heating. Of course, the cooking appliance can also be a composite appliance combining microwave, steam, and baking functions.

[0114] In addition, the cooking appliance may also include a hot air assembly 96 to heat the food with hot air.

[0115] in, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 This is a schematic diagram of the overall structure of a cooking appliance. Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 , Figure 16 , Figure 17 , Figure 18 , Figure 19 , Figure 20 , Figure 21 , Figure 22 , Figure 23 This is a schematic diagram of the heat dissipation component.

[0116] The cooking appliances can be ovens (including convection ovens and radiant ovens), microwave ovens, steam ovens, or combination microwave-steam-oven ovens.

[0117] The following describes a specific cooking appliance.

[0118] This embodiment belongs to the field of cooking appliance technology, specifically involving a whole-machine heat dissipation air duct technology for kitchen cooking appliances. It makes full use of the original motor structure of the cooking appliance to dissipate heat from the whole machine (including the motor itself, the oven door, the top of the cavity and the back space).

[0119] As we all know, kitchen cooking appliances rely on the high-temperature environment of their interiors to cook food. Therefore, during operation, it's difficult to avoid the electrical components inside the appliances being subjected to thermal shock from the high-temperature cavity, leading to malfunctions. Furthermore, some electrical components, such as magnetrons, inverters, and power boards, generate a significant amount of heat and require timely heat dissipation to ensure normal operation. To address these issues, many kitchen cooking appliances employ passive cooling technologies, such as adding ventilation holes to the outer casing and base to increase the heat exchange area, or wrapping the cavity with insulating material to reduce the impact of high temperatures on the electrical components. Of course, some also employ active cooling technologies, using one or more fans through independent air ducts to cool specific components in localized areas.

[0120] Related solutions and their drawbacks:

[0121] 1. Single-motor single-duct cooling technology: This technology utilizes a single fan and designs a single independent cooling duct to provide localized cooling for certain electrical components in a specific space, thereby reducing the surface temperature of the electrical components.

[0122] 2. Single-motor dual-airflow cooling technology: This active cooling technology utilizes a single fan and two independent cooling airflows to cool electrical components in the furnace door and cavity, thereby reducing the surface temperature of the electrical components.

[0123] 3. Multi-motor, multi-airflow cooling technology: The multi-fan, multi-airflow cooling structure provides simultaneous cooling for multiple components of the cooking appliance.

[0124] Among them, single-motor single-duct cooling technology: Some single-fan ducts can only cool individual electrical components or local spaces in the whole machine, and cannot cool multiple electrical components located in different spaces. Single-motor dual-duct cooling technology, based on a single duct, adds cooling for the furnace door, but other electrical components of the whole machine, such as frequency converters, furnace lights, and cameras, still require other cooling or insulation methods. Multi-motor multi-duct cooling technology: Although it can solve the cooling problem of multiple electrical components in multiple different spaces, the cooling structure of multiple ducts significantly increases the cooling cost of the whole machine, making the overall structure compact, messy, and complex, and seriously reducing the reliability of the whole machine.

[0125] This embodiment aims to solve the problems of single-fan single-airflow and single-motor dual-airflow systems failing to provide adequate heat dissipation for the entire machine, as well as the problems of complex structures and low overall reliability in multi-motor multi-airflow cooling systems.

[0126] The single-motor multi-airflow technology in this embodiment is mainly achieved through a heat dissipation airflow assembly located outside the cavity of the cooking appliance. This heat dissipation assembly primarily consists of a motor assembly, an airflow assembly, and an air guide cover. The airflow assembly includes an airflow cover and an airflow base plate, with an air outlet at the junction of the two covers. A notch is provided on the airflow cover for mounting the motor assembly. The motor assembly comprises a drive motor, centrifugal fan blades, and a motor bracket, which is fixed to the airflow cover of the airflow assembly. The air guide cover has one or more airflow channels and is fixed to the motor bracket or the airflow cover, together with the airflow assembly, enclosing the motor assembly to form a single-motor multi-airflow system.

[0127] The principle of this air duct is as follows: the motor assembly generates suction at the center of the centrifugal fan blades, and draws in cold air from outside the cavity through one or more air guide passages of the air guide cover. Under the action of centrifugal force, the air is blown out from the air outlet of the air duct assembly.

[0128] In other designs, the motor bracket is integrated with the duct cover, and the drive motor is directly mounted on the duct cover.

[0129] The key areas for improvement are:

[0130] 1. A single-motor, multi-airflow design located outside the cooking appliance cavity (including the top, bottom, and sides).

[0131] 2. By combining the air guide cover with the air duct cover (including the motor bracket), the air intake of a single or multiple air ducts is enclosed using the working principle of the centrifugal fan blades.

[0132] This structure, featuring a single motor and multiple air ducts, provides a complete airflow system and significant heat dissipation, effectively addressing the heat dissipation issues of electrical components that generate significant heat, such as magnetrons, inverters, and power boards. Driven by a single motor, the multiple air ducts dissipate heat from electrical components located in various positions within the cooking appliance, while simultaneously expelling steam or hot air from the cavity.

[0133] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0134] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A cooking appliance, characterized in that, include: shell; An inner liner is disposed inside the outer shell, and the inner liner is provided with a cooking cavity and an opening communicating with the cooking cavity. A first heat dissipation air duct is formed between the inner liner and the outer shell. A door body, installed on the outer shell, is used to open or close the opening, and a second heat dissipation duct is provided inside the door body; At least one electrical component is disposed between the outer casing and the inner liner; A heat dissipation assembly is disposed between the outer shell and the inner liner, including a third heat dissipation duct and a fan disposed within the third heat dissipation duct. The third heat dissipation duct includes multiple air intakes, and the fan is configured to draw in airflow through the multiple air intakes. The plurality of air intakes include a second air intake, a third air intake, and at least one first air intake. At least one first air intake is configured to correspond one-to-one with at least one electrical component. The airflow flowing through the first air intake can exchange heat with the corresponding electrical component. The second air intake is connected to the first heat dissipation duct. When the door closes the opening, the third air intake is connected to the second heat dissipation duct.

2. The cooking appliance according to claim 1, characterized in that, The third heat dissipation duct also includes an air outlet duct and multiple independently configured air guide ducts. One end of the air guide duct is provided with the air intake, and the other end of the air guide duct extends to the fan. The air guide duct is configured to guide external airflow into the fan through its corresponding air intake. The inlet of the air outlet duct is located on the air outlet side of the fan. The air outlet duct is configured to guide the airflow generated by the fan to the outside of the cooking appliance.

3. The cooking appliance according to claim 1, characterized in that, Along the height direction of the cooking appliance, an air passage gap is provided between the outer casing and the door. The third heat dissipation duct also includes an air outlet channel. The inlet of the air outlet channel is located on the air outlet side of the fan. The air outlet channel is configured to guide the airflow generated by the fan to the air passage gap.

4. The cooking appliance according to claim 3, characterized in that, The third heat dissipation air duct also includes a third air guide channel. One end of the third air guide channel is provided with the third air intake, and the other end of the third air guide channel extends to the fan. The third air guide channel is configured to guide external airflow through the second heat dissipation air duct and the third air intake into the fan.

5. The cooking appliance according to claim 4, characterized in that, The heat dissipation component also includes: Air duct base plate; A duct partition is disposed on the bottom plate of the duct, forming the third air guide channel with the bottom plate of the duct; A duct cover is disposed on the side of the duct partition away from the duct bottom plate, forming the air outlet channel with the duct partition.

6. The cooking appliance according to claim 5, characterized in that, The heat dissipation component also includes: An air guide cover is disposed on the air duct cover, forming at least one first air guide channel and a second air guide channel with the air duct cover. One end of the first air guide channel is provided with a first air intake, and the other end of the first air guide channel extends to the fan. The first air guide channel is configured to guide external airflow into the fan through the first air intake. One end of the second air guide channel is provided with a second air intake, and the other end of the second air guide channel extends to the fan. The second air guide channel is configured to guide airflow in the first heat dissipation air duct into the fan through the second air intake. The fan is rotatably mounted between the air guide cover and the air duct cover.

7. The cooking appliance according to claim 6, characterized in that, The heat dissipation component also includes: A motor bracket is disposed between the air guide cover and the air duct cover; An electric motor, mounted on the motor bracket and connected to the fan, is used to drive the fan to rotate.

8. The cooking appliance according to claim 6, characterized in that, The rotation axis of the fan is set along the height direction of the cooking appliance, and the fan is a centrifugal fan; and / or The air guide cover includes a mounting part and at least two air guide parts connected to the mounting part. The at least two air guide parts are arranged circumferentially around the mounting part and form at least two first air guide channels with the air duct cover. The mounting part is provided with a second air intake. The fan is installed between the mounting part and the air duct cover.

9. The cooking appliance according to any one of claims 1 to 8, characterized in that, At least one of the electrical components includes a magnetron disposed between the outer shell and the inner liner, communicating with the cooking cavity to deliver microwaves to the cooking cavity; and / or At least one of the electrical components includes an electronic control board for supplying power to the cooking appliance and / or controlling the operation of the cooking appliance; and / or At least one of the electrical components includes a frequency converter for controlling the operation of the magnetron.

10. The cooking appliance according to any one of claims 1 to 8, characterized in that, The outer casing is provided with at least two air inlets, a portion of which is connected to the first heat dissipation duct, and the remaining portion of which is connected to at least one of the first air intakes; or The outer casing is provided with an air inlet, which is connected to the first heat dissipation duct, and at least one of the first air intakes is connected to the first heat dissipation duct.

11. The cooking appliance according to any one of claims 1 to 8, characterized in that, Along the height direction of the cooking appliance, the electrical components and / or the heat dissipation assembly are disposed at the top of the inner pot, the third heat dissipation duct is disposed along the front-rear direction of the cooking appliance, and along the front-rear direction of the cooking appliance, at least one of the first air intakes is located behind the outlet of the third heat dissipation duct.

12. The cooking appliance according to any one of claims 1 to 8, characterized in that, Also includes: A steam generator is used to supply steam into the cooking cavity; and / or Heating element, installed inside the cooking cavity; and / or A hot air assembly for generating hot air within the cooking cavity.

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