Airflow type heat dissipation device and cooking equipment

Abstract

This invention relates to a flow-guiding heat dissipation device and a cooking appliance, which can solve the problems of high heat dissipation costs and increased failure rates in cooking appliances. The flow-guiding heat dissipation device includes: a cooling fan having an air inlet and an air outlet communicating with the air inlet; a flow divider including a mounting plate and a flow divider plate, the mounting plate having a mounting area for mounting the cooling fan, a heat dissipation area for mounting a first component to be cooled, and a flow divider hole located between the mounting area and the heat dissipation area; the flow divider plate extends obliquely from the heat dissipation area toward the air outlet to divide the air outlet into a first sub-outlet corresponding to the heat dissipation area and a second sub-outlet corresponding to the flow divider hole; and a flow guide having a flow guide groove and a flow guide hole corresponding to the second component to be cooled; the flow guide is mounted on the mounting plate to form a flow guide channel communicating with the flow divider hole and the flow guide hole between the flow guide and the mounting plate through the flow guide groove.

Description

Technical Field

[0001] This invention relates to the field of home appliance technology, and in particular to a flow-guiding heat dissipation device and cooking equipment. Background Technology

[0002] Home appliances typically use a large number of electrical components, many of which are highly sensitive to temperature. This is especially true for cooking appliances such as stoves, steamers, and ovens, where the primary function is to provide a high-temperature cooking environment, resulting in generally high overall temperatures. Therefore, heat dissipation requirements for the electrical components are particularly important for these appliances.

[0003] The most common way to dissipate heat is to equip the core electrical components with fans. However, due to certain structural layouts and other reasons, the electrical components in the equipment are often distributed in several relatively independent areas. Therefore, in order to meet the heat dissipation needs of different areas, it is necessary to equip each area with a separate fan for heat dissipation. This not only increases the heat dissipation cost, but also increases the complexity of the structural design, which leads to an increase in the failure rate of the equipment. Summary of the Invention

[0004] Therefore, it is necessary to address the problems of high heat dissipation costs and increased failure rates of cooking equipment. This invention provides a flow-guided heat dissipation device and cooking equipment.

[0005] In one embodiment of this application, the present invention provides a flow-guiding heat dissipation device for dissipating heat from a first component to be cooled and a second component to be cooled. The flow-guiding heat dissipation device includes:

[0006] A cooling fan having an air inlet and an air outlet communicating with the air inlet;

[0007] A diverter includes a mounting plate and a diverter plate. The mounting plate has a mounting area for mounting the cooling fan, a heat dissipation area for mounting the first heat-dissipating component, and a diverter hole located between the mounting area and the heat dissipation area. The diverter plate extends obliquely from the heat dissipation area toward the air outlet to divide the air outlet into a first sub-outlet corresponding to the heat dissipation area and a second sub-outlet corresponding to the diverter hole.

[0008] A flow guide has a flow groove and a vent hole corresponding to the second heat dissipation component; the flow guide is mounted on the mounting plate to form a flow channel communicating with the vent hole and the vent hole between the flow guide and the mounting plate through the flow groove.

[0009] In one embodiment of this application, the diverter plate includes a top diverter wall and a pair of side diverter walls. The top diverter wall extends obliquely from the edge of the air distribution hole near the heat dissipation area to the middle part of the air outlet, and the two side diverter walls extend gradually along other edges of the air distribution hole to the edge portion of the air outlet, so as to form a funnel-shaped diverter groove on the diverter.

[0010] In one embodiment of this application, the top wall of the diversion extends upward at an angle from the right edge of the air distribution hole to the middle part of the air outlet, so as to divide the air outlet into a first sub-outlet and a second sub-outlet arranged vertically; the two diversion sidewalls extend to the left along the front and rear edges of the air distribution hole to the lower edge of the air outlet, so as to surround the second sub-outlet.

[0011] In one embodiment of this application, the drainage groove of the drainage member extends from the air distribution hole to the air guide hole, and a plurality of the air guide holes are sequentially and spaced apart at the bottom of the drainage groove along the extension direction of the drainage groove.

[0012] In one embodiment of this application, the flow channel has a first end near the air distribution hole and a second end away from the air distribution hole, and a plurality of air guide holes are arranged sequentially at intervals along the airflow direction at the second end of the flow channel.

[0013] In one embodiment of this application, the diversion element further includes a guide plate disposed within the diversion groove, the guide plate being located on the leeward side of the air duct.

[0014] In one embodiment of this application, a plurality of the air guide plates extend obliquely upward from the leeward edge of the corresponding air guide hole toward the windward side of the air guide hole to form an air guide grille.

[0015] In one embodiment of this application, a plurality of the air guide plates increase in height sequentially along the airflow direction to form a stepped multi-segment grille.

[0016] In one embodiment of this application, the drainage member further includes a return channel communicating with the drainage channel and an exhaust port communicating with the return channel. The return channel extends gradually from the second end of the drainage channel to form a return cavity communicating with the drainage channel between the drainage member and the mounting plate.

[0017] In one embodiment of this application, the vent is provided on the return channel in a region of the channel bottom that is offset from the second end.

[0018] In one embodiment of this application, the reflux channel has an arc-shaped peripheral wall, and the second end of the diversion channel is eccentrically connected to the reflux channel to form the reflux cavity with a volute-like structure.

[0019] According to another aspect of this application, this application further provides a cooking device, comprising:

[0020] The main body of the equipment includes a first heat-dissipating component and a second heat-dissipating component arranged relatively independently; and

[0021] The aforementioned flow-guiding heat dissipation device is assembled on the main body of the equipment and is used to simultaneously dissipate heat from the first heat-dissipating component and the second heat-dissipating component.

[0022] In summary, the cooking device of this application can simultaneously dissipate heat from the first and second heat-dissipating components located in two relatively independent areas using only one cooling fan. This not only avoids increasing the heat dissipation cost but also simplifies the complexity of the structural design and reduces the failure rate of the device.

[0023] Furthermore, in the airflow-guided heat dissipation device of this application, on the one hand, the diverting component can have a funnel-shaped diverting groove corresponding to the second sub-outlet of the cooling fan, which can increase the airflow velocity, not only increase the air intake volume, but also ensure that the air flowing in the diversion channel has sufficient kinetic potential energy so that it can be more powerfully blown towards the second heat-dissipating component that is farther away under the guidance of the air duct, thereby improving its heat dissipation performance; on the other hand, the diverting component can form a stepped multi-segment grille at multiple air ducts, which can not only effectively divert airflow and reduce cold air loss, but also help to keep the exhaust volume of multiple air ducts uniform, so as to better dissipate heat from the second heat-dissipating component.

[0024] In addition, in the airflow-guided heat dissipation device of this application, the airflow component is designed with a return air chamber and an exhaust port at the end of the airflow channel, which helps to reduce the resistance of the entire airflow channel, ensure that the cold air flows smoothly in the airflow channel, and improve the heat dissipation effect. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a cooking device according to an embodiment of this application;

[0026] Figure 2 A perspective view of a heat dissipation device for a cooking apparatus according to the above embodiments of this application is shown;

[0027] Figure 3 A perspective cross-sectional schematic diagram of a flow-guiding heat dissipation device according to the above embodiments of this application is shown;

[0028] Figure 4An exploded schematic diagram of the flow-guiding heat dissipation device according to the above example of this application is shown;

[0029] Figure 5 A schematic diagram of the flow-guiding heat dissipation device according to the above example of this application is shown;

[0030] Figure 6 It shows Figure 5 An enlarged schematic diagram of part A in the flow-guided heat dissipation device;

[0031] Figure 7 It shows Figure 5 An enlarged schematic diagram of part B in the flow-guided heat dissipation device.

[0032] Explanation of main component symbols: 1. Guided heat dissipation device; 100. Guide channel; 200. Funnel-shaped diversion groove; 300. Return chamber; 10. Cooling fan; 11. Air inlet; 12. Air outlet; 121. First sub-outlet; 122. Second sub-outlet; 20. Diversion component; 21. Mounting plate; 211. Mounting area; 212. Heat dissipation area; 213. Air distribution hole; 22. Diversion plate; 221. Diversion top wall; 222. Diversion side wall; 30. Guide component; 31. Guide groove; 311. First end; 312. Second end; 32. Air guide hole; 33. Air guide plate; 34. Return groove; 35. Exhaust hole; 2. Equipment body; 3. First component to be cooled; 4. Second component to be cooled.

[0033] The above description of the main component symbols, together with the accompanying drawings and specific embodiments, provides a more detailed explanation of the present invention. Detailed Implementation

[0034] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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 invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this invention, 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 or an electrical 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0040] Considering that existing technologies require individual fans to cool different, relatively independent areas, this not only increases cooling costs but also adds complexity to the structural design, leading to a higher failure rate. Therefore, this application provides a flow-guided cooling device and cooking equipment that solves the problems of high cooling costs and high failure rates in cooking equipment.

[0041] Specifically, refer to Figure 1 As shown, one embodiment of this application provides a cooking device, which may include a device body 2 and a flow-guiding heat dissipation device 1 assembled on the device body 2; the device body 2 includes a first heat dissipation component 3 and a second heat dissipation component 4 arranged relatively independently, so that the first heat dissipation component 3 and the second heat dissipation component 4 can be dissipated simultaneously by the flow-guiding heat dissipation device 1, thereby achieving the required environmental conditions for use.

[0042] More specifically, such as Figures 1 to 7 As shown, the airflow-guided heat dissipation device 1 may include a cooling fan 10, a flow divider 20, and a flow guide 30. The cooling fan 10 has an air inlet 11 and an air outlet 12 communicating with the air inlet 11. The flow divider 20 includes a mounting plate 21 and a flow divider plate 22. The mounting plate 21 has a mounting area 211 for mounting the cooling fan 10, a heat dissipation area 212 for mounting the first heat-dissipating component 3, and a vent 213 located between the mounting area 211 and the heat dissipation area 212. The flow divider plate 22 extends obliquely from the heat dissipation area 212 toward the air outlet 12 to divide the air outlet 12 into a first sub-outlet 121 corresponding to the heat dissipation area 212 and a second sub-outlet 122 corresponding to the vent 213. The diverting component 30 has a diverting groove 31 and a venting hole 32 corresponding to the second heat dissipation component 4; the diverting component 30 is mounted on the mounting plate 21 so as to form a diverting channel 100 between the diverting component 30 and the mounting plate 21 through the diverting groove 31, which communicates with the venting hole 213 and the venting hole 32.

[0043] Thus, under the diversion effect of the diversion plate 22, the air flowing out through the first sub-outlet 121 will be blown towards the heat dissipation area 212 to dissipate heat on the first heat-dissipating component 3; at the same time, the air flowing out through the second sub-outlet 122 will be blown towards the air distribution hole 213; and then, under the diversion effect of the diversion groove 31, it will flow along the diversion channel 100 to the air guide hole 32, so as to be blown towards the second heat-dissipating component 4 through the air guide hole 32 for heat dissipation.

[0044] It is worth noting that the first heat-dissipating component 3 mentioned in this application can be, but is not limited to, implemented as a power board, which is installed in the heat dissipation area 212 of the mounting plate 21, so that the diverter 20 can act as a power board box to protect the power board. The second heat-dissipating component 4 mentioned in this application can be, but is not limited to, implemented as a valve body, water pump, or capacitor, etc., which usually need to be arranged in a relatively independent area from the power board; in this case, the diverter 30 of this application can act as a power box bracket, so that while installing the power board box to the main body 2 of the device, the first heat-dissipating component 3 and the second heat-dissipating component 4 can be separated, so that they are located in two relatively independent areas respectively. Therefore, the cooking device of this application can dissipate heat for the first heat-dissipating component 3 and the second heat-dissipating component 4 located in two relatively independent areas using only one cooling fan 10, which not only does not increase the heat dissipation cost, but also simplifies the complexity of the structural design and reduces the failure rate of the device.

[0045] Optionally, such as Figure 4 and Figure 6 As shown, the diversion plate 22 of this application may include a diversion top wall 221 and a pair of diversion side walls 222; the diversion top wall 221 extends obliquely from the edge of the air distribution hole 213 near the heat dissipation area 212 to the middle part of the air outlet 12, and the two diversion side walls 222 extend gradually along the other edges of the air distribution hole 213 to the edge part of the air outlet 12, so as to form a funnel-shaped diversion groove 200 on the diversion member 20. In this way, the top wall 221 and the two side walls 222 surround the second sub-outlet 122, while the first sub-outlet 121 is exposed, which effectively achieves the function of diversion. In particular, the flow area of ​​the funnel-shaped diversion groove 200 of the diversion component 20 near the air outlet 12 is larger than the flow area of ​​the funnel-shaped diversion groove 200 of the diversion component 20 away from the air outlet 12 (i.e. near the heat dissipation area 212). This makes the air flowing out of the second sub-outlet 122 gradually increase in velocity within the funnel-shaped diversion groove 200, which helps to increase the intake volume and allow more air to flow to the guide channel 100 to be blown to the second heat dissipation component 4 through the air guide hole 32, thereby improving the heat dissipation effect on the second heat dissipation component 4.

[0046] For example, such as Figures 3 to 7As shown, taking the installation area 211 and the heat dissipation area 212 as being located on the left and right sides of the air distribution hole 213 respectively, the top wall 221 of the air distribution hole 213 extends upward at an angle from the right edge to the middle part of the air outlet 12, so as to divide the air outlet 12 into the first sub-outlet 121 and the second sub-outlet 122 arranged vertically; the two side walls 222 extend gradually to the left along the front and rear edges of the air distribution hole 213 to the lower edge of the air outlet 12, so as to surround the second sub-outlet 122. In this way, the top wall 221 and the two side walls 222 will form an upwardly recessed funnel-shaped diversion groove 200 on the mounting plate 21 at the location corresponding to the air distribution hole 213. This will increase the flow velocity of the air flowing out through the second sub-outlet 122 after passing through the funnel-shaped diversion groove 200. That is, the air flow velocity from the air distribution hole 213 will be greater than the air flow velocity from the second sub-outlet 122. This ensures that the air flowing in the drainage channel 100 has sufficient kinetic potential energy so that it can be more powerfully blown towards the second heat dissipation component 4, which is farther away, under the guidance of the air guide hole 32, thereby improving its heat dissipation performance.

[0047] Optionally, such as Figure 1 and Figure 3 As shown, the cooling fan 10 and the first heat-dissipating component 3 are both installed on the upper side of the mounting plate 21, while the diversion component 30 is correspondingly installed on the lower side of the mounting plate 21. At the same time, the second heat-dissipating component 4 is located below the diversion component 30, so that the first heat-dissipating component 3 and the second heat-dissipating component 4 are separated into two relatively independent areas by the diversion component 30 and the diversion component 20, so as to better match the overall structural layout of the cooking equipment.

[0048] Optionally, such as Figure 3 , Figure 4 as well as Figure 7 As shown, the drainage groove 31 of the drainage component 30 extends from the air distribution hole 213 to the air guide hole 32, and multiple air guide holes 32 are sequentially and spaced apart at the bottom of the drainage groove 31 along the extension direction of the drainage groove 31, so that the air flowing out through the air distribution hole 213 passes through multiple air guide holes 32 sequentially under the guidance of the drainage groove 31, and is blown out in a direction away from the heat dissipation area 212 through multiple air guide holes 32, so as to cover the second heat dissipation component 4 with a larger distribution area and achieve better heat dissipation.

[0049] Optionally, such as Figure 3 and Figure 4As shown, the airflow channel 31 may have a first end 311 near the air distribution hole 213 and a second end 312 away from the air distribution hole 213. Multiple air guide holes 32 are arranged sequentially and at intervals along the airflow direction at the second end 312 of the airflow channel 31. In this way, the airflow channel 31 can guide the air flowing out through the air distribution hole 213 to a more distant area for discharge through the air guide holes 32, thereby dissipating heat from the second heat-dissipating component 4, which is located far from the cooling fan 10. It is understood that the airflow direction mentioned in this application corresponds to the extension direction of the airflow channel 31 (i.e., the airflow channel 100), such as... Figure 5 The direction is shown from left to right; of course, in other examples of this application, the drainage channel 31 does not need to extend in a straight line, but can also extend in a curved manner, as long as it can guide the air to the area corresponding to the second heat dissipation component 4, which will not be elaborated further in this application.

[0050] Optionally, such as Figure 3 , Figure 4 as well as Figure 7 As shown, the airflow guide 30 further includes an air guide plate 33 disposed within the airflow channel 31. The air guide plate 33 is correspondingly located on the leeward side of the airflow hole 32 to guide the air flowing in the airflow channel 31 to be discharged from the corresponding airflow hole 32, thereby increasing the exhaust volume of the airflow hole 32. It can be understood that the airflow hole 32, located at the bottom of the airflow channel 31, has a windward side and a leeward side along the airflow direction. That is, the air flowing along the airflow channel 31 first flows through the windward side of the airflow hole 32 (e.g., the leeward side). Figure 7 As shown on the left), it then flows through the leeward side of the air guide 32 (such as the left side). Figure 7 (As shown on the right side), that is, the air in the diversion channel 31 flows in the direction from the windward side to the leeward side.

[0051] Optionally, such as Figure 7 As shown, multiple air guide plates 33 extend obliquely upward from the leeward edge of the corresponding air guide hole 32 toward the windward side of the air guide hole 32 to form an air guide grille, which facilitates better guidance of air out of the corresponding air guide hole 32, effectively increasing the exhaust volume of the air guide hole 32 and reducing cold air loss.

[0052] Optionally, such as Figure 7 As shown, multiple air guide plates 33 increase in height sequentially along the airflow direction to form a stepped multi-segment grille, which helps to maintain a uniform exhaust volume from the multiple air guide holes 32, facilitating better heat dissipation for the second heat-dissipating component 4. It is understood that the position and number of the air guide holes 32 and air guide plates 33 in this application can be designed according to the installation position of the electrical components in the second heat-dissipating component 4, in order to meet the heat dissipation requirements of different heat-dissipating components.

[0053] It is worth noting that, in the above embodiments of this application, such as Figure 3 and Figure 4As shown, the diversion component 30 may further include a return channel 34 communicating with the diversion channel 31 and an exhaust port 35 communicating with the return channel 34. The return channel 34 extends gradually from the second end 312 of the diversion channel 31 to form a return cavity 300 communicating with the diversion channel 100 between the diversion component 30 and the mounting plate 21. This helps to reduce the resistance of the entire air passage, ensure that the cold air flows smoothly in the diversion channel 100, and improve the heat dissipation effect.

[0054] Optionally, such as Figure 4 As shown, the exhaust port 35 is located on the return channel 34, offset from the bottom area of ​​the second end 312. This allows the residual air flowing out from the second end 312 of the guide channel 31 to first turn within the return channel 34, and then flow through the exhaust port 35 to be discharged from the return cavity 300. Preferably, the exhaust port 35 of this application can be arranged facing the second heat-dissipating component 4, just like the air guide port 32, so that the residual air discharged through the exhaust port 35 can also be blown towards the second heat-dissipating component 4 to participate in heat dissipation, so as to make full use of the cold air discharged through the second sub-outlet 122 of the cooling fan 10.

[0055] Optionally, such as Figure 4 As shown, the return channel 34 may have an arc-shaped peripheral wall, and the second end 312 of the guide channel 31 is eccentrically connected to the return channel 34 to form a return cavity 300 with a volute structure, so that the air can be more smoothly turned to be discharged from the exhaust port 35 for local heat dissipation.

[0056] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A flow-guiding heat dissipation device for dissipating heat from a first component to be cooled and a second component to be cooled, characterized in that, The flow-guided heat dissipation device includes: A cooling fan having an air inlet and an air outlet communicating with the air inlet; A diverter includes a mounting plate and a diverter plate. The mounting plate has a mounting area for mounting the cooling fan, a heat dissipation area for mounting the first heat-dissipating component, and a diverter hole located between the mounting area and the heat dissipation area. The diverter plate extends obliquely from the heat dissipation area toward the air outlet to divide the air outlet into a first sub-outlet corresponding to the heat dissipation area and a second sub-outlet corresponding to the diverter hole. A flow guide has a flow guide groove and a vent hole corresponding to the second heat dissipation component; the flow guide is mounted on the mounting plate to form a flow channel communicating with the vent hole and the vent hole between the flow guide and the mounting plate through the flow guide groove; The diversion plate includes a top diversion wall and a pair of side diversion walls. The top diversion wall extends obliquely from the edge of the air distribution hole near the heat dissipation area to the middle part of the air outlet, and the two side diversion walls extend gradually along the other edges of the air distribution hole to the edge portion of the air outlet, so as to form a funnel-shaped diversion groove on the diversion member. The drainage component further includes a return channel communicating with the drainage channel and an exhaust port communicating with the return channel. The return channel extends gradually from the second end of the drainage channel to form a return cavity communicating with the drainage channel between the drainage component and the mounting plate.

2. The flow-guiding heat dissipation device according to claim 1, characterized in that, The top wall of the diversion extends upward at an angle from the right edge of the air distribution hole to the middle part of the air outlet, so as to divide the air outlet into the first sub-outlet and the second sub-outlet arranged vertically; the two diversion sidewalls extend to the left along the front and rear edges of the air distribution hole to the lower edge of the air outlet, so as to surround the second sub-outlet.

3. The flow-guiding heat dissipation device according to claim 1 or 2, characterized in that, The drainage groove of the drainage component extends from the air distribution hole to the air guide hole, and a plurality of air guide holes are sequentially and spaced apart at the bottom of the drainage groove along the extension direction of the drainage groove.

4. The flow-guiding heat dissipation device according to claim 3, characterized in that, The flow channel has a first end close to the air distribution hole and a second end away from the air distribution hole, and a plurality of air guide holes are arranged sequentially at intervals along the airflow direction at the second end of the flow channel.

5. The flow-guiding heat dissipation device according to claim 3, characterized in that, The flow guide further includes an air guide plate disposed within the flow guide groove, the air guide plate being located on the leeward side of the air guide hole.

6. The flow-guiding heat dissipation device according to claim 5, characterized in that, The plurality of the air guide plates extend obliquely upward from the leeward edge of the corresponding air guide hole toward the windward side of the air guide hole to form an air guide grille.

7. The flow-guiding heat dissipation device according to claim 6, characterized in that, Multiple air guide plates increase in height sequentially along the airflow direction to form a stepped, multi-segment grille.

8. The flow-guiding heat dissipation device according to claim 1, characterized in that, The vent is located on the return channel in the area of ​​the channel bottom that is offset from the second end.

9. The flow-guiding heat dissipation device according to claim 8, characterized in that, The reflux trough has an arc-shaped peripheral wall, and the second end of the diversion trough is eccentrically connected to the reflux trough to form the reflux cavity with a volute-like structure.

10. A cooking appliance, characterized in that, include: The main body of the equipment includes a first heat-dissipating component and a second heat-dissipating component arranged relatively independently. and The flow-guiding heat dissipation device as described in any one of claims 1 to 9 is assembled on the main body of the device for simultaneously dissipating heat from the first heat-dissipating component and the second heat-dissipating component.

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