Cooking utensil

Abstract

The utility model discloses a cooking utensil which comprises a pot body with a containing cavity, the pot body comprises a bottom shell located below the containing cavity, the cooking utensil further comprises a circuit board box arranged on the bottom shell, an electromagnetic wire coil located above the circuit board box and a circuit board located below the circuit board box, and the upper surface of the circuit board box is provided with a water collecting groove and a water outlet. A cooling fan is arranged on one transverse side of the circuit board box, an air outlet of the cooling fan faces the circuit board box so that part of air flow can be blown to the position between the circuit board box and the electromagnetic wire coil to form first cooling air flow, part of the air flow can be blown to the circuit board, and the water outlet is formed in a flowing path of the first cooling air flow. The air flow of the cooling fan is divided into two strands by the circuit board box, one strand flows from the upper part of the circuit board box to cool the electromagnetic wire coil, and the other strand flows from the lower part of the circuit board box to cool the circuit board, so that the heat dissipation requirements of a plurality of components are met, the internal structure of the pot body is simplified, and the cost is saved.

Description

Technical Field

[0001] This utility model belongs to the field of kitchen appliance technology, specifically relating to a cooking utensil. Background Technology

[0002] Some cooking appliances have internal cooling fans to cool the circuit boards or other components inside the pot. The circuit board is typically placed vertically at the rear of the pot, with the cooling fan positioned below it, blowing cooling air upwards. A circuit board housing is also installed on the outside of the circuit board to waterproof it and to meet electrical clearance and creepage distance requirements.

[0003] In the prior art, the circuit board box almost completely encloses the circuit board, which obstructs the airflow. This results in the airflow from the cooling fan being obstructed, affecting the heat dissipation of the circuit board and causing poor cooling performance, with a significant temperature rise still occurring.

[0004] Furthermore, the cooling fan is located at the rear of the pot and blows cold air upwards. This means the airflow can only flow upwards into the area where the circuit board is located, failing to reach other components inside the pot. For example, heating elements such as the heating plate or induction coil located below the inner pot sometimes require cooling, but the airflow from the cooling fan cannot reach these elements, resulting in poor heat dissipation. In some cases, an additional fan may be needed to cool the heating elements, which significantly increases the complexity of the pot's structure and production costs.

[0005] Furthermore, placing the circuit board at the rear of the pot occupies a significant portion of the pot's radial space, increasing its radial dimensions and hindering the trend towards miniaturization. Moreover, water flowing from the lid can easily seep into the pot and drip onto the circuit board, posing a risk of short circuits or even damage upon contact with water. Utility Model Content

[0006] This utility model provides a cooking appliance to solve the problems of the circuit board being blocked by the circuit board box, resulting in poor cooling effect of the circuit board, and the fan airflow not being able to reach other components that need heat dissipation. The appliance also has a limited function, and the circuit board occupies a large space and is easily damaged by water.

[0007] The technical solution adopted in this utility model is as follows:

[0008] A cooking appliance includes a pot body with a accommodating cavity, the pot body including a bottom shell located below the accommodating cavity, the cooking appliance also including a circuit board box disposed on the bottom shell, an electromagnetic coil located above the circuit board box, and a circuit board located below the circuit board box, the upper surface of the circuit board box being provided with a water collection tank and a drain outlet, a cooling fan being disposed on one lateral side of the circuit board box, the air outlet of the cooling fan facing the circuit board box so that part of the airflow blows towards the upper surface of the circuit board box and the electromagnetic coil to form a first cooling airflow, and part blows towards the circuit board, wherein the drain outlet is disposed in the flow path of the first cooling airflow.

[0009] In this invention, the circuit board box and the circuit board are located in the bottom shell, specifically below the accommodating cavity. The circuit board is positioned below the circuit board box, and the cooling fan is located on one side of the circuit board box with its outlet facing horizontally towards the box. This allows the airflow from the cooling fan to flow horizontally towards the circuit board box. The airflow is divided into two streams by the circuit board box. One stream flows from the top of the circuit board box, forming the first cooling airflow, which flows within the air channel formed between the upper surface of the circuit board box and the electromagnetic coil, contacting the electromagnetic coil to cool it. The other stream flows from the bottom of the circuit board box, flowing within the air channel formed between the lower surface of the circuit board box and the bottom shell, contacting the circuit board to cool it as well. This allows the airflow from the cooling fan to cool both the electromagnetic coil and the circuit board, enabling a single fan to simultaneously meet the heat dissipation needs of multiple components. This simplifies the internal structure of the pot and saves costs.

[0010] In addition, the circuit board and circuit board box are both located below the accommodating cavity, making reasonable use of the space inside the bottom shell, which can greatly save space on the side of the pot body, thereby helping to reduce the radial dimension of the pot body and achieve miniaturization design.

[0011] Furthermore, the upper surface of the circuit board box is equipped with a water collection tank and a drain outlet. Due to the location of the circuit board box below the receiving cavity, it can better collect the liquid dripping from the receiving cavity. The liquid in the water collection tank is further discharged from the bottom shell through the drain outlet. In this way, the upper surface of the circuit board box is used to collect liquid, and the lower surface is used to fix the circuit board. The circuit board box itself separates the circuit board from the liquid, preventing the liquid from reaching the bottom of the circuit board box, thereby greatly reducing the risk of short circuit or damage to the circuit board when it comes into contact with water.

[0012] A first cooling air duct is formed between the electromagnetic coil and the upper surface of the circuit board box. A first cooling airflow flows within the first cooling air duct. The circuit board box has a proximal end close to the cooling fan and a distal end far from the cooling fan. The drain outlet is located at the distal end and is connected to the water collection tank.

[0013] In this design, since the cooling fan is located on the horizontal side of the circuit board box and the air outlet faces the circuit board box, the liquid in the water collection tank will be pushed towards the far end under the action of the first cooling airflow. On the one hand, this can prevent the liquid in the water collection tank from being sucked into the cooling fan, reducing the risk of the cooling fan coming into contact with water. On the other hand, by setting the drain outlet at the far end, the liquid in the water collection tank can flow towards the far end to the drain outlet under the action of the first cooling airflow, which helps to drain the liquid in the water collection tank and avoids long-term accumulation in the water collection tank.

[0014] The bottom wall of the water collection tank gradually slopes down from the near end to the far end to form a guide slope.

[0015] In this design, the guide slope gradually decreases towards the distal end, and the drain outlet is located at the lower end of the guide slope. This further enhances the guiding effect on the liquid in the collection tank, allowing the liquid to flow towards the distal end under its own gravity and then be discharged through the drain outlet. Through the combined effect of airflow and the guide slope, the liquid flow efficiency is greatly improved, enabling timely discharge and reducing accumulation.

[0016] The outer periphery of the water collection tank is provided with upward-protruding flow-blocking ribs, which include a first rib located at the near end and a second rib located at the far end. The height of the first rib is lower than the height of the second rib.

[0017] In this design, the flow-blocking ribs are located at the edge of the water collection tank, effectively obstructing the liquid within the tank and preventing it from dripping down. The liquid is forced to drain through the drain outlet, further reducing the risk of liquid dripping onto the circuit board housing. Furthermore, the first rib at the near end is lower than the second rib at the far end. Since the near end is closer to the cooling fan, the lower height of the first rib reduces obstruction of the fan's airflow, allowing more airflow into the air duct above the circuit board housing. This improves the cooling effect on the electromagnetic coil and the pushing effect on the liquid in the water collection tank. Under the influence of airflow, the liquid in the water collection tank may flow to the far end, potentially causing temporary accumulation. Therefore, increasing the height of the second rib allows for greater liquid collection at the far end, preventing accumulated liquid from overflowing onto the circuit board housing.

[0018] The circuit board box is equipped with a downward-extending water guide pipe that is connected to the drain outlet. The bottom shell is equipped with a through-hole through which the water guide pipe passes. The lower edge of the water guide pipe is flush with the edge of the through-hole, or the lower edge of the water guide pipe extends beyond the edge of the through-hole.

[0019] In this design, liquid entering the drain outlet is directly guided to the outside of the pot body via a water guide pipe, completely separating the liquid flow path from the circuit board below the circuit board box, reducing the possibility of the circuit board coming into contact with water. The lower edge of the water guide pipe is flush with the edge of the through-hole, which not only allows the liquid to drip directly to the outside of the pot body, but also makes the outer surface of the bottom shell more uniform. The lower edge of the water guide pipe extending beyond the through-hole further lowers the dripping height of the liquid within the pipe, reducing noise during dripping and minimizing the height of splashing water, preventing splashing water from entering the bottom shell from the bottom upwards.

[0020] The lower surface of the circuit board box is provided with downward protruding wind baffles. The wind baffles are located on both sides of the circuit board box. The wind baffles, the lower surface of the circuit board box, and the bottom wall of the bottom shell work together to form a second cooling air duct that connects to the cooling fan. Part of the airflow from the cooling fan blows into the second cooling air duct to form a second cooling airflow. The circuit board is located on the flow path of the second cooling airflow.

[0021] In this design, the circuit board is positioned between the two side baffles. These baffles, along with the lower surface of the circuit board housing and the bottom wall of the base, form a second cooling airflow channel. The circuit board is located within this channel. Compared to blowing air into a larger, open space, the smaller and more enclosed nature of the second cooling airflow channel allows for faster airflow and stronger airflow, resulting in a more effective cooling effect on the circuit board. Furthermore, the baffles on both sides of the circuit board also prevent liquid leakage from the upper water collection tank from reaching the circuit board. The liquid flows downwards along the surface of the baffles, preventing it from reaching the circuit board inside the baffles.

[0022] The side wall of the circuit board box is provided with a first fixing structure, and the cooling fan is fixedly connected to the first fixing structure. The lower surface of the circuit board box is provided with a second fixing structure, and the circuit board is fixedly connected to the second fixing structure.

[0023] In this solution, the cooling fan is fixed to one side of the circuit board box via a first fixing structure, and the circuit board is fixed to the lower side of the circuit board box via a second fixing structure. This allows both the cooling fan and the circuit board to be fixed to the circuit board box, thus forming a single component that can be installed as a cooling unit inside the pot. During assembly, the cooling fan and the circuit board are first fixed to the circuit board box, and then the entire assembly is fixed inside the pot. Compared to assembling each component individually, this method greatly reduces assembly difficulty and improves assembly efficiency.

[0024] The bottom shell and / or the electromagnetic coil are provided with a fixing post, and the circuit board box is provided with a positioning groove. The positioning groove is inserted and engaged with the fixing post to position the circuit board box.

[0025] In this design, the fixing post is used for fixed connection with the circuit board box. Simultaneously, the fixing post can be inserted into the positioning slot of the circuit board box for positioning, improving the accuracy of the circuit board box's installation position. Furthermore, the fixing post simultaneously performs the dual functions of positioning and fixing, simplifying both the fixing and positioning structures. It also ensures that the positioning and fixing positions coincide, resulting in high positional accuracy after positioning, allowing for direct fixing operations and significantly reducing the impact of errors.

[0026] The bottom shell is provided with an upwardly protruding first fixing post, the electromagnetic coil is provided with a downwardly protruding second fixing post, the circuit board box is provided with a mating structure, the lower side of the mating structure is provided with a first positioning groove for inserting and mating with the first fixing post, and the upper side is provided with a second positioning groove for inserting and mating with the second fixing post. The cooking appliance also includes fasteners, which securely connect the first fixing post, the mating structure and the second fixing post.

[0027] In this design, the cooperating structure is inserted and positioned with the fixed posts on the upper and lower sides, thereby achieving the positioning of the electromagnetic coil, circuit board box, and bottom shell in a single operation. This greatly simplifies the positioning process and improves positioning accuracy. Furthermore, after positioning, all three components are simultaneously fastened together with fasteners, allowing a single fastener to secure all three parts at once. This reduces the difficulty of fixing, simplifies the assembly process, and ensures good assembly precision and stability among the three components.

[0028] The bottom shell has side walls and bottom walls. The side walls have air inlets that correspond to the air inlets of the cooling fan. The bottom walls have exhaust vents. The air inlets and exhaust vents are located at opposite ends of the bottom shell along its length.

[0029] In this design, the air inlet is located on the side wall of the bottom shell, corresponding to the air inlet of the cooling fan. This allows the cooling fan to smoothly draw in air from the outside, ensuring smooth airflow. The exhaust vent is located on the bottom wall of the bottom shell. When the pot is placed on a table, the exhaust vent is concealed, and the exhaust is hidden. Since the airflow from the exhaust vent comes into contact with the electromagnetic coil and circuit board for heat exchange, the temperature will rise. Bottom exhaust prevents users from coming into contact with hot air, reducing the risk of burns. Furthermore, the exhaust vent and air inlet are arranged at both ends along the length of the bottom shell, allowing the airflow to enter the bottom shell from one end and exit from the other. This allows the airflow to travel a longer distance within the bottom shell, ensuring sufficient contact with the electromagnetic coil and circuit board for heat exchange, improving airflow utilization and cooling effect. Attached Figure Description

[0030] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0031] Figure 1 This is a cross-sectional view of a cooking utensil according to one embodiment of the present invention;

[0032] Figure 2 for Figure 1 A magnified view of area A in the middle;

[0033] Figure 3 This is an exploded view of a portion of the pot body of a cooking utensil according to one embodiment of the present invention;

[0034] Figure 4 This is an exploded sectional view of the circuit board box according to one embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the circuit board box according to one embodiment of the present invention;

[0036] Figure 6 for Figure 5 Cross-sectional view of the circuit board box;

[0037] Figure 7 This is a schematic diagram of the bottom shell according to one embodiment of the present invention.

[0038] in:

[0039] 1. Pot body; 11. Receiving cavity; 12. Bottom shell; 121. Passage port; 122. First fixing column; 123. Side wall; 124. Bottom wall; 125. Air inlet; 126. Air outlet; 13. Outer cover;

[0040] 2 cooling fans;

[0041] 3 Circuit board box; 31 Water collection tank; 311 Drain outlet; 312 Proximal end; 313 Distal end; 314 Guide slope; 32 First cooling air duct; 33 Second cooling air duct; 34 Water guide pipe; 35 Mating structure; 351 First positioning groove; 352 Second positioning groove; 36 Flow-blocking rib; 361 First rib position; 362 Second rib position; 37 Windproof rib;

[0042] 4 circuit boards;

[0043] 5. Electromagnetic coil; 51. Second fixed post. Detailed Implementation

[0044] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0045] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0046] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," or "specific example" 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 invention. 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.

[0049] like Figure 1 , Figure 3 As shown, a cooking appliance includes a pot body 1 with a accommodating cavity 11. The pot body 1 includes a bottom shell 12 located below the accommodating cavity 11. The cooking appliance also includes a circuit board box 3 disposed on the bottom shell 12, an electromagnetic coil 5 located above the circuit board box 3, and a circuit board 4 located below the circuit board box 3. The upper surface of the circuit board box 3 is provided with a water collection tank 31 and a drain outlet 311. A cooling fan 2 is disposed on one side of the circuit board box 3. The air outlet of the cooling fan 2 faces the circuit board box 3 so that part of the airflow blows between the upper surface of the circuit board box 3 and the electromagnetic coil 5 to form a first cooling airflow, and part blows towards the circuit board 4. The drain outlet 311 is disposed in the flow path of the first cooling airflow.

[0050] Specifically, the pot body 1 also includes an outer cover 13 surrounding the outer periphery of the receiving cavity 11, and a bottom shell 12 located below the outer cover 13. The outer cover 13 and the bottom shell 12 can be... Figure 3 The split structure shown can also be designed as an integrated structure, simply by placing the circuit board box 3 and the circuit board 4 below the accommodating cavity 11.

[0051] It should be noted that this utility model does not limit the type of cooking appliance. It can be an atmospheric pressure cooking appliance, such as a rice cooker, or a pressure cooking appliance, such as an electric pressure cooker, as long as it uses an electromagnetic coil 5 for heating. Of course, for cooking appliances that use a heating plate, if the heating plate has a cooling requirement, the arrangement of the circuit board box 3, circuit board 4, and cooling fan 2 in this utility model can be used to direct part of the airflow from the cooling fan 2 towards the circuit board 4 and part towards the heating plate.

[0052] In this invention, the circuit board box 3 and the circuit board 4 are disposed on the bottom shell 12, that is, below the accommodating cavity 11. The circuit board 4 is located below the circuit board box 3, and the cooling fan 2 is disposed on one side of the circuit board box 3 with its air outlet facing the circuit board box 3 laterally. This allows the airflow blown by the cooling fan 2 to flow laterally toward the circuit board box 3. The airflow is divided into two streams by the circuit board box 3. One stream flows from the top of the circuit board box 3 to form the first cooling airflow, flowing within the air channel formed between the upper surface of the circuit board box 3 and the electromagnetic coil 5, contacting the electromagnetic coil 5 to cool it down. The other stream flows from the bottom of the circuit board box 3, flowing within the air channel formed between the lower surface of the circuit board box 3 and the bottom shell 12, contacting the circuit board 4 to cool it down. This allows the airflow blown by the cooling fan 2 to cool both the electromagnetic coil 5 and the circuit board 4, thus using one fan to meet the heat dissipation needs of multiple components simultaneously, simplifying the internal structure of the pot body 1 and saving costs.

[0053] In addition, both the circuit board 4 and the circuit board box 3 are located below the accommodating cavity 11, making reasonable use of the space inside the bottom shell 12, which can greatly save the space on the side of the pot body 1, thereby helping to reduce the radial dimension of the pot body 1 and achieve miniaturization design.

[0054] Furthermore, the upper surface of the circuit board box 3 is provided with a water collection tank 31 and a drain outlet 311. Due to the location characteristics of the circuit board box 3, which is located below the receiving cavity 11, it can better collect the liquid dripping from the receiving cavity 11. The liquid in the water collection tank 31 is further discharged from the bottom shell 12 through the drain outlet 311. In this way, the upper surface of the circuit board box 3 is used to collect liquid, and the lower surface is used to fix the circuit board 4. The circuit board box 3 itself separates the circuit board 4 from the liquid, preventing the liquid from reaching the bottom of the circuit board box 3, thereby greatly reducing the risk of the circuit board 4 short-circuiting or being damaged when exposed to water.

[0055] Preferably, such as Figure 1 , Figure 3 , Figure 4 , Figure 6 As shown, the circuit board box 3 is provided with a downward-extending water guide pipe 34, which is connected to the drain outlet 311. The bottom shell 12 is provided with a through-hole 121, through which the water guide pipe 34 passes. The water guide pipe 34 directly guides the liquid entering the drain outlet 311 to the outside of the pot body 1, so that the flow path of the liquid is completely separated from the circuit board 4 below the circuit board box 3, reducing the possibility of the circuit board 4 coming into contact with water.

[0056] In one embodiment, the lower edge of the water guide pipe 34 is flush with the edge of the through port 121. This flush alignment not only allows liquid to drip directly onto the outside of the pot body 1, but also makes the outer surface of the bottom shell 12 more uniform.

[0057] In another embodiment, such as Figure 1 As shown, the lower edge of the water guide pipe 34 extends through the edge of the opening 121. This lowers the height at which the liquid drips from the water guide pipe 34, reducing noise during dripping and lowering the height of splashing water, thus preventing splashing water from entering the bottom shell 12 from the bottom.

[0058] It should be noted that the present invention does not limit the location of the drain outlet 311, as long as it is located inside the water collection tank 31. For example, it can be located at the end of the water collection tank 31 away from the cooling fan 2, or at the end of the water collection tank 31 close to the cooling fan 2, or in the middle section of the water collection tank 31, etc.

[0059] As a preferred embodiment of this utility model, such as Figure 1 , Figure 3 , Figure 4 As shown, a first cooling air duct 32 is formed between the electromagnetic coil 5 and the upper surface of the circuit board box 3. The first cooling airflow flows in the first cooling air duct 32. The circuit board box 3 has a proximal end 312 close to the cooling fan 2 and a distal end 313 away from the cooling fan 2. The drain outlet 311 is located at the distal end 313 and is connected to the water collection tank 31.

[0060] Since the cooling fan 2 is located on the lateral side of the circuit board box 3 and the air outlet faces the circuit board box 3, under the action of the first cooling airflow, it will push the liquid in the water collection tank 31 to flow towards the far end 313. On the one hand, it can prevent the liquid in the water collection tank 31 from being sucked into the cooling fan 2, reducing the risk of the cooling fan 2 coming into contact with water. On the other hand, the drain outlet 311 is set at the far end 313, so that the liquid in the water collection tank 31 flows towards the far end 313 to the drain outlet 311 under the action of the first cooling airflow, which helps the liquid in the water collection tank 31 to be discharged and avoids long-term accumulation in the water collection tank 31.

[0061] Furthermore, such as Figure 6 As shown, the bottom wall 124 of the water collection tank 31 gradually decreases from the near end 312 to the far end 313 to form a guide slope 314.

[0062] The guide slope 314 gradually decreases towards the distal end 313, and the drain outlet 311 is located at the lower end of the guide slope 314. This further enhances the guiding effect on the liquid in the collection tank 31, allowing the liquid to flow towards the distal end 313 under its own gravity and then be discharged through the drain outlet 311. Through the combined effect of airflow and the guide slope 314, the flow efficiency of the liquid is greatly improved, enabling timely discharge and reducing accumulation.

[0063] Preferably, such as Figure 4 , Figure 5 As shown, the outer periphery of the water collection tank 31 is provided with an upwardly protruding flow-blocking rib 36. The flow-blocking rib 36 includes a first rib position 361 located at the near end 312 and a second rib position 362 located at the far end 313. The height of the first rib position 361 is lower than the height of the second rib position 362.

[0064] The flow-blocking rib 36 is located at the edge of the water collection tank 31, which can block the liquid in the water collection tank 31, confining the liquid within the water collection tank 31 and preventing it from dripping down from the edge of the water collection tank 31. The liquid can only be discharged through the drain outlet 311, thereby further reducing the risk of the liquid in the water collection tank 31 dripping down to the circuit board box 3, i.e., the circuit board 4. In addition, the first rib 361 located at the near end 312 is lower than the second rib 362 located at the far end 313. Since the near end 312 is closer to the cooling fan 2, the height of the first rib 361 is lower, which can reduce the obstruction of the airflow blown out by the cooling fan 2, allowing more airflow to enter the air duct above the circuit board box 3, thereby improving the cooling effect on the electromagnetic coil 5 and the pushing effect on the liquid in the water collection tank 31. Under the action of airflow, the liquid in the water collection tank 31 will flow to the far end 313. There is a possibility that the liquid will temporarily accumulate at the far end 313. Therefore, the height of the second rib 362 is increased so that more liquid can be collected at the far end 313, and the liquid accumulated at the far end 313 will be prevented from overflowing below the circuit board box 3 after crossing the second rib 362.

[0065] It should be noted that, in this embodiment, the height of the first rib 361 and the second rib 362 refers to the distance extended upward from the bottom wall 124 of the water collection tank 31, and does not represent the relative height of the first rib 361 and the second rib 362. That is to say, in one embodiment, since the bottom wall 124 of the water collection tank 31 is a sloping structure, the bottom wall 124 of the near end 312 is higher and the bottom wall 124 of the far end 313 is lower. Therefore, the upward extension height of the second rib 362 is higher than the upward extension height of the first rib 361. There may be three situations: the upper edge of the second rib 362 is lower than the upper edge of the first rib 361; the upper edge of the second rib 362 is flush with the upper edge of the first rib 361; or the upper edge of the second rib 362 is higher than the upper edge of the first rib 361.

[0066] Preferably, such as Figure 4 , Figure 5 As shown, the flow-blocking rib 36 surrounds the water collection tank 31 circumferentially, and the height of the flow-blocking rib 36 gradually decreases from the far end 313 to the near end 312.

[0067] Preferably, such as Figure 5 As shown, the lower surface of the circuit board box 3 is provided with a downward protruding wind baffle 37. The wind baffle 37 is located on both sides of the circuit board box 3. The wind baffle 37, the lower surface of the circuit board box 3, and the bottom wall 124 of the bottom shell 12 work together to form a second cooling air duct 33 that connects to the cooling fan 2. Part of the airflow from the cooling fan 2 blows into the second cooling air duct 33 to form a second cooling airflow. The circuit board 4 is located on the flow path of the second cooling airflow.

[0068] The circuit board 4 is located between the two side baffles 37. The baffles 37, together with the lower surface of the circuit board box 3 and the bottom wall 124 of the bottom shell 12, form a second cooling air duct 33. The circuit board 4 is located within this air duct. Compared with blowing air into a larger and more open space, the second cooling air duct 33 is smaller and more enclosed. Therefore, the second cooling airflow flows faster and is stronger within the second cooling air duct 33, resulting in a more prominent air cooling effect on the circuit board 4. In addition, the baffles 37 on both sides of the circuit board 4 can also block liquid leaking from the edge of the upper water collection tank 31, causing the liquid to flow downwards along the surface of the baffles 37 and preventing it from flowing to the circuit board 4 inside the baffles 37.

[0069] As a preferred embodiment of this utility model, such as Figure 4 , Figure 6 As shown, the side wall 123 of the circuit board box 3 is provided with a first fixing structure, the cooling fan 2 is fixedly connected to the first fixing structure, the lower surface of the circuit board box 3 is provided with a second fixing structure, and the circuit board 4 is fixedly connected to the second fixing structure.

[0070] The cooling fan 2 is fixed to one side of the circuit board box 3 by the first fixing structure, and the circuit board 4 is fixed to the lower side of the circuit board box 3 by the second fixing structure, so that both the cooling fan 2 and the circuit board 4 can be fixed to the circuit board box 3, thus forming a component. It can be installed as a whole into the pot body 1 as a cooling unit. During assembly, the cooling fan 2 and the circuit board 4 are first fixed to the circuit board box 3, and then the whole formed by the three is fixed into the pot body 1. Compared with the method of assembling each component one by one, the assembly difficulty can be greatly reduced and the assembly efficiency can be improved.

[0071] Preferably, the first fixing structure is a fixing hole, and the cooling fan 2 is provided with fixing ribs so that it can be fastened to the fixing hole by screws or other fasteners through the fixing ribs. The second fixing structure is a fixing clip, which is used to snap and fix the circuit board 4. Of course, the first and second fixing structures can also be other structures to fix the cooling fan 2 and the circuit board 4 to the circuit board box 3 in other ways, which is not limited here.

[0072] Furthermore, such as Figures 1 to 3 As shown, the bottom shell 12 and / or the electromagnetic coil 5 are provided with a fixing post, and the circuit board box 3 is provided with a positioning groove, which is inserted and matched with the fixing post to position the circuit board box 3.

[0073] The fixing post is used for fixed connection with the circuit board box 3. At the same time, the fixing post can be inserted into the positioning slot of the circuit board box 3 for positioning, improving the accuracy of the installation position of the circuit board box 3. Moreover, the fixing post performs the dual function of positioning and fixing, which not only simplifies the fixing structure and positioning structure, but also makes the positioning position coincide with the fixing position. After positioning, the fixing position has high positional accuracy, and the fixing operation can be performed directly, greatly reducing the impact of errors.

[0074] Specifically, such as Figure 2 , Figure 3 As shown, the bottom shell 12 is provided with an upwardly protruding first fixing post 122, the electromagnetic coil 5 is provided with a downwardly protruding second fixing post 51, the circuit board box 3 is provided with a mating structure 35, the lower side of the mating structure 35 is provided with a first positioning groove 351 for inserting and mating with the first fixing post 122, and the upper side is provided with a second positioning groove 352 for inserting and mating with the second fixing post 51. The cooking appliance also includes fasteners, which fasten the first fixing post 122, the mating structure 35 and the second fixing post 51 together.

[0075] The structure 35 is inserted and positioned with the fixing posts on the upper and lower sides, thereby achieving the positioning of the electromagnetic coil 5, circuit board box 3, and bottom shell 12 in a single positioning operation, greatly simplifying the positioning steps and improving positioning accuracy. In addition, after positioning, the three are simultaneously fastened together with fasteners, allowing a single fastener to fix all three components at the same time, reducing the difficulty of fixing, simplifying the assembly steps, and ensuring good assembly accuracy and stability among the three.

[0076] Specifically, such as Figure 4 , Figure 5 As shown, there are multiple mating structures 35, which are spaced apart around the circumference of the water collection tank 31. The first fixing post 122 and the second fixing post 51 are respectively arranged in a one-to-one correspondence with the mating structure 35 to improve the fixing stability of the circuit board box 3 and avoid tilting.

[0077] Preferably, such as Figure 7 As shown, the bottom shell 12 has a side wall 123 and a bottom wall 124. The side wall 123 has an air inlet 125, which is corresponding to the air inlet of the cooling fan 2. The bottom wall 124 has an exhaust port 126. The air inlet 125 and the exhaust port 126 are located opposite each other at both ends of the bottom shell 12 along the length direction of the bottom shell 12.

[0078] The air inlet 125 is located on the side wall 123 of the bottom shell 12, corresponding to the air inlet of the cooling fan 2, so that the cooling fan 2 can smoothly draw in air from the outside and ensure smooth airflow. The exhaust vent 126 is located on the bottom wall 124 of the bottom shell 12. When the pot body 1 is placed on the table, the exhaust vent 126 is hidden and the exhaust is concealed. Since the airflow flowing out of the exhaust vent 126 comes into contact with the electromagnetic coil 5 and the circuit board 4 for heat exchange, the temperature will rise. Bottom exhaust can prevent users from coming into contact with hot air and reduce the risk of burns.

[0079] In addition, the exhaust port 126 and the air inlet 125 are arranged at both ends along the length of the bottom shell 12, so that the airflow enters the bottom shell 12 from one end and exits from the other end, thereby allowing the airflow to travel a longer distance within the bottom shell 12 and completely flow through all areas of the electromagnetic coil 5 and the circuit board 4, making full contact with the electromagnetic coil 5 and the circuit board 4 to complete heat exchange, thereby improving airflow utilization and cooling effect.

[0080] Specifically, such as Figure 1 , Figure 3 , Figure 7 As shown, external airflow enters the pot body 1 through the air inlet 125 on the side wall 123 of the bottom shell 12, is drawn in by the cooling fan 2, and blown towards the circuit board box 3 through the air outlet of the cooling fan 2. The circuit board box 3 then divides the airflow into two streams. One stream flows upward into the first cooling air channel 32 between the electromagnetic coil 5 and the upper surface of the circuit board box 3, cooling the electromagnetic coil 5. The other stream flows downward into the second cooling air channel 33 between the lower surface of the circuit board box 3 and the bottom shell 12, cooling the circuit board 4. The two airflows flow laterally, converge at the end of the circuit board box 3 furthest from the cooling fan 2, and flow downwards to be discharged through the exhaust port 126 on the bottom wall 124 of the bottom shell 12.

[0081] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0082] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0083] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A cooking appliance comprising a pot body having a receiving cavity, the pot body including a bottom shell located below the receiving cavity, characterized in that, The cooking appliance also includes a circuit board box disposed on the bottom shell, an electromagnetic coil located above the circuit board box, and a circuit board located below the circuit board box. The upper surface of the circuit board box is provided with a water collection tank and a drain outlet. A cooling fan is disposed on one side of the circuit board box. The air outlet of the cooling fan faces the circuit board box so that part of the airflow blows between the upper surface of the circuit board box and the electromagnetic coil to form a first cooling airflow, and part blows towards the circuit board. The drain outlet is disposed in the flow path of the first cooling airflow.

2. The cooking utensil according to claim 1, characterized in that, A first cooling air duct is formed between the electromagnetic coil and the upper surface of the circuit board box. The first cooling airflow flows within the first cooling air duct. The circuit board box has a proximal end near the cooling fan and a distal end away from the cooling fan. The drain outlet is located at the distal end and communicates with the water collection tank.

3. The cooking utensil according to claim 2, characterized in that, The bottom wall of the water collection tank gradually slopes down from the near end to the far end to form a guide slope.

4. The cooking utensil according to claim 2, characterized in that, The outer periphery of the water collection tank is provided with upwardly protruding flow-blocking ribs, the flow-blocking ribs include a first rib located at the near end and a second rib located at the far end, the height of the first rib being lower than the height of the second rib.

5. The cooking utensil according to claim 1, characterized in that, The circuit board box is provided with a downwardly extending water guide pipe, which is connected to the drain outlet. The bottom shell is provided with a through-hole, through which the water guide pipe passes. The lower edge of the water guide pipe is flush with the edge of the through-hole, or the lower edge of the water guide pipe extends beyond the edge of the through-hole.

6. The cooking utensil according to claim 1, characterized in that, The lower surface of the circuit board box is provided with downward protruding wind baffles. The wind baffles are located on both sides of the circuit board box. The wind baffles, the lower surface of the circuit board box, and the bottom wall of the bottom shell work together to form a second cooling air duct that connects to the cooling fan. Part of the airflow from the cooling fan blows into the second cooling air duct to form a second cooling airflow. The circuit board is located on the flow path of the second cooling airflow.

7. The cooking utensil according to claim 1, characterized in that, The circuit board box has a first fixing structure on its side wall, the cooling fan is fixedly connected to the first fixing structure, and the circuit board is fixedly connected to the second fixing structure on its lower surface.

8. The cooking utensil according to claim 7, characterized in that, The bottom shell and / or the electromagnetic coil are provided with a fixing post, and the circuit board box is provided with a positioning groove. The positioning groove is inserted and cooperated with the fixing post to position the circuit board box.

9. The cooking utensil according to claim 8, characterized in that, The bottom shell is provided with an upwardly protruding first fixing post, the electromagnetic coil is provided with a downwardly protruding second fixing post, the circuit board box is provided with a mating structure, the lower side of the mating structure is provided with a first positioning groove for inserting and mating with the first fixing post, and the upper side is provided with a second positioning groove for inserting and mating with the second fixing post. The cooking appliance also includes fasteners, which securely connect the first fixing post, the mating structure and the second fixing post.

10. The cooking utensil according to claim 1, characterized in that, The bottom shell has a side wall and a bottom wall. The side wall has an air inlet, which is corresponding to the air inlet of the cooling fan. The bottom wall has an exhaust port. The air inlet and the exhaust port are located opposite each other at both ends of the bottom shell along its length.

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