Electromagnetic cooking device

Abstract

The utility model discloses an electromagnetic cooking device, which belongs to the field of electromagnetic cooking devices, solves the problem that the heat dissipation effect is affected as airflow easily forms turbulent flow in the middle of a wind shield, and adopts the technical scheme that the electromagnetic cooking device mainly comprises a base, and a heating device and a heat dissipation device are arranged in the base; the heat dissipation device comprises a fan and a wind shield covering the upper side of the fan, an air inlet is formed in the lower side of the fan, an air outlet is formed in the side, close to the heating device, of the fan, the fan comprises a driving motor and fan blades, a flow guide groove is formed between the bottom of the wind shield and the fan blades, and the end of the flow guide groove is communicated with the air outlet. The flow guide groove comprises an outer side wall and an inner side wall, in the radial direction of the fan, the outer side wall is located on the outer side of the fan blades, and the inner side wall is located on the inner side of the fan blades or located at the position where the driving motor is located. Stable airflow can be formed on the lower side of the wind shield mainly through the flow guide grooves, and the heat dissipation effect of the heat dissipation device can be improved.

Description

TECHNICAL FIELD

[0001] The utility model discloses an electromagnetic cooking device belongs to electromagnetic cooking device technical field. BACKGROUND

[0002] With the development and popularization of small household appliances industry, electromagnetic cooking device is loved by consumers because of easy to carry, fast heating and other advantages;The existing electromagnetic cooking device includes base and panel assembly, the base is internally provided with electromagnetic coil disc, main control board and heat dissipation device, the electromagnetic coil disc generates heat after electrification, and then forms a heating area on the panel assembly to realize the heating of the pot, the main control board controls the operation of the electromagnetic coil disc to achieve different cooking effects, and the heat dissipation device can dissipate heat for the main control board and the coil disc, slow down the heating speed of the main control board and the coil disc, and avoid the long-time operation of the main control board under high temperature.

[0003] The heat dissipation device in the prior art usually includes a fan and a wind shield, the fan is surrounded by a side plate on the outer periphery, and the wind shield is covered on the top of the fan, the air inlet of the heat dissipation device is arranged on the base and located on the lower side of the fan, and the air outlet is arranged on the side of the heat dissipation device facing the coil disc, after the fan is started, the airflow enters the heat dissipation device from the bottom of the base upwards, changes direction after converging to the wind shield and leaves the heat dissipation device to blow to the coil disc through the air outlet.

[0004] However, the fan usually includes a driving motor and a fan blade, the fan blade is distributed on the outer periphery of the driving motor, and there is a gap between the wind shield and the top end of the driving motor, after the fan is started, the airflow rises from the outer periphery of the driving motor through the fan blade, and the airflow converges to the edge of the wind shield when rising to the wind shield, and then changes direction to flow in the horizontal direction under the guidance of the wind shield, and there is a gap between the wind shield and the driving motor, so more airflow flows from the edge of the wind shield to the middle of the wind shield, the airflow in the middle of the wind shield collides with each other, thereby affecting the flow rate of the airflow, and turbulence is easily generated, resulting in low flow rate of the airflow after leaving the air outlet, thereby affecting the heat dissipation effect. UTILITY MODEL CONTENTS

[0005] The utility model discloses an electromagnetic cooking device belongs to electromagnetic cooking device technical field.

[0006] To solve the above technical problems, the utility model adopts the following technical scheme:

[0007] An electromagnetic cooking device includes a base, within which a heating element and a cooling element are disposed. The cooling element includes a fan and a windshield covering the upper side of the fan. An air inlet is provided on the lower side of the fan, and an air outlet is provided on the side near the heating element. The fan includes a drive motor and fan blades. A guide groove is formed between the bottom of the windshield and the fan blades. The end of the guide groove is connected to the air outlet. The guide groove includes an outer side wall and an inner side wall. In the radial direction of the fan, the outer side wall is located outside the fan blades, and the inner side wall is located inside the fan blades or at the location of the drive motor.

[0008] The beneficial effects of using this utility model are:

[0009] The wind deflector of this invention forms a guide channel between its bottom and the fan blades. The guide channel has an outer wall and an inner wall. In the radial direction of the fan, the inner wall of the guide channel is located inside the fan blades or at the location of the drive motor. When the airflow rises after passing the fan blades, it directly enters the guide channel. Under the action of the wind deflector, the airflow changes direction, and some airflow flows towards the outer or inner wall. The outer and inner walls restrict the airflow, allowing more airflow to converge in the guide channel and then flow towards the air outlet under its guidance. Additionally, the inner wall restricts the airflow to the center of the wind deflector, preventing airflow from colliding. Firstly, the airflow guide channel reduces the possibility of airflow turbulence and energy loss, allowing the airflow to maintain a higher velocity as it leaves the outlet, thus achieving better heat dissipation. It also reduces noise from the heat dissipation device, improving the user experience. Secondly, the guide channel converges and directs the airflow towards the outlet, forming a stable and orderly airflow path, further reducing energy loss and providing a stable and continuous cooling airflow to the coil. This effectively improves the heat dissipation of the device, slows down the coil's temperature rise, prevents the coil from overheating for extended periods, and helps extend the coil's lifespan.

[0010] Preferably, the inner sidewall is arranged in a ring shape and fixed to the bottom of the windshield. By adopting the aforementioned technical solution, fixing the inner sidewall to the bottom of the windshield can enhance the strength of the windshield, reduce the possibility of deformation of the windshield due to high temperature, and help extend the service life of the windshield.

[0011] Preferably, the fan blades are rotatably connected to the bottom of the driving motor, and the inner side wall is fixed to the top of the driving motor. With the above technical scheme, since the air flow is upward from the bottom of the driving motor into the flow guide groove, the inner side wall is fixed to the top of the driving motor, so that the bottom of the inner side wall and the driving motor are kept closed, the air flow is prevented from entering the middle of the wind shield from between the inner side wall and the driving motor and leaving the flow guide groove, more air flow can be gathered in the flow guide groove, the loss of air flow energy is reduced, the air flow keeps a high flow rate, so as to provide a continuous and stable air flow to the coil disc, and the heat dissipation effect of the heat dissipation device is improved.

[0012] Preferably, the top end of the inner side wall abuts against the wind shield, and the bottom end of the inner side wall abuts against the top of the driving motor. With the above technical scheme, the top end and the bottom end of the inner side wall abut against the wind shield and the driving motor respectively, so that the possibility of the air flow leaving the flow guide groove from the top end and the bottom end of the inner side wall is reduced, the air flow leaving the flow guide groove is further reduced, more air flow can be gathered in the flow guide groove, so as to improve the flow rate of the air flow when leaving the air outlet, the heat dissipation effect of the heat dissipation device is improved; in addition, the inner side wall can effectively support the wind shield, the strength of the wind shield is improved, the possibility of the middle of the wind shield collapsing downward is reduced, the wind shield is prevented from deforming due to high temperature, and the service life of the wind shield is prolonged.

[0013] Preferably, the inner side wall gradually inclines to the flow guide groove from the bottom end to the top end, and the inner side wall is a smooth curved surface in the circumferential direction of the fan. With the above technical scheme, the air flow rises from the bottom of the fan into the flow guide groove, and the inner side wall can guide the air flow to gather in the middle of the flow guide groove during the rising of the air flow along the inner side wall, so that the air flow is more concentrated, and the flow rate of the air flow when leaving the air outlet is further improved, so as to provide a better heat dissipation effect to the coil disc; in addition, the inner side wall is a smooth curved surface in the circumferential direction of the fan, so that the inner side wall does not hinder the air flow during the guiding of the air flow to the air outlet by the flow guide groove, the air resistance of the air flow is reduced, the energy loss of the air flow is reduced, and the heat dissipation effect of the air flow is improved.

[0014] Preferably, the heat dissipation device further comprises a side plate surrounding the outer periphery of the fan, the wind shield has an abutting surface placed on the top end of the side plate, and the bottom end of the outer side wall is connected to the abutting surface. With the above technical scheme, the bottom end of the outer side wall extends to the abutting surface, so that the depth of the flow guide groove is increased, the volume of the flow guide groove is further increased, more air flow can be gathered in the flow guide groove, the flow rate of the air outlet is improved, more air flow can be guided to blow to the coil disc, and the heat dissipation effect of the heat dissipation device is improved.

[0015] As preferred, the top wall of the flow guide groove is upwardly protruding, and the top wall of the flow guide groove is higher than the top end surface of the driving motor. By the foregoing technical scheme, the depth of the flow guide groove can be increased, so that the flow guide groove can converge more airflow, and the heat dissipation effect can be improved. In addition, the distance between the top wall of the flow guide groove and the fan blade can be increased, so that the influence of the rotation of the fan blade on the airflow in the flow guide groove is reduced, so that the flow guide groove can form a stable and orderly airflow path, and the heat dissipation effect of the heat dissipation device is further improved.

[0016] As preferred, the bottom of the wind shield is provided with at least one reinforcing rib between the inner side wall and the outer side wall. By the foregoing technical scheme, the reinforcing rib can improve the strength of the wind shield, reduce the possibility of deformation of the wind shield due to high temperature, and help to prolong the service life of the wind shield. By arranging the reinforcing rib in the flow guide groove, the possibility of downward collapse of the top wall of the flow guide groove is reduced, so that the flow guide groove can converge more airflow, and better heat dissipation effect can be provided for the coil disc.

[0017] As preferred, the reinforcing rib is recessed downward from the top wall of the flow guide groove, and the bottom end of the reinforcing rib is provided with a guide surface to guide the airflow to pass over the reinforcing rib. By the foregoing technical scheme, the reinforcing rib is formed from the top wall of the flow guide groove, so that the setting difficulty of the reinforcing rib is reduced, and other fasteners are not needed, which helps to improve the manufacturing efficiency of the wind shield. In addition, the guide surface can reduce the resistance of the airflow to the reinforcing rib, reduce the energy loss of the airflow, and make the airflow maintain a high flow rate, so that better heat dissipation effect can be achieved.

[0018] As preferred, the heat dissipation device further comprises a side plate arranged around the outer periphery of the fan, the wind shield cover is arranged on the side plate, the outer periphery of the wind shield is provided with a downwardly extending blocking rib, and the blocking rib is arranged on the side of the side plate away from the fan. By the foregoing technical scheme, the blocking rib extends downward from the wind shield to the outer side of the side plate, so that the airflow loss between the wind shield and the side plate is reduced, the airflow tightness between the wind shield and the side plate is improved, more airflow can be converged in the flow guide groove, the wind converging effect of the flow guide groove is improved, and the flow rate at the air outlet is increased, so that the heat dissipation effect of the heat dissipation device is improved. In addition, the blocking rib can be limited with the side plate, so that the wind shield can be positioned, the assembly of the wind shield and the side plate is more stable and reliable, the possibility of misalignment of the wind shield is reduced, the installation of the wind shield is guided, and the installation difficulty of the wind shield is further reduced.

[0019] Other features and advantages of the present application will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] The present application will be further described below with reference to the drawings:

[0021] Figure 1 It is an exploded view of the electromagnetic cooking device of the utility model;

[0022] Figure 2 It is a structural schematic view of the base in the electromagnetic cooking device of the utility model;

[0023] Figure 3 It is a sectional view of the base in the electromagnetic cooking device of the utility model;

[0024] Figure 4 It is Figure 3 It is a local enlarged view of A part in the middle;

[0025] Figure 5 It is a structural schematic view of the wind shield in the electromagnetic cooking device of the utility model;

[0026] Figure 6 It is a sectional view of the wind shield in the electromagnetic cooking device of the utility model.

[0027] The figure mark: 1, base; 2, panel assembly; 21, upper cover; 22, first panel; 23, second panel; 24, support ring; 3, heat dissipation device; 31, fan; 331, drive motor; 332, fan blade; 32, wind shield; 321, flow guide groove; 322, outer side wall; 323, inner side wall; 324, reinforcing rib; 325, blocking rib; 326, abutment surface; 33, side plate; 34, air inlet; 35, air outlet; 4, coil disc; 5, main control board. DETAILED DESCRIPTION

[0028] The technical scheme of the utility model embodiment is explained and described below in combination with the drawings of the utility model embodiment, but the following embodiment is only the preferred embodiment of the utility model, not all. Based on the embodiment in the embodiment, other embodiments obtained by the person skilled in the art without making creative labor all belong to the protection scope of the utility model.

[0029] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" is the orientation or position relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and is not indicative or implied that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore it cannot be understood as the limitation of the utility model.

[0030] 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 one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise expressly defined.

[0031] 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 connection; 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; and they can refer to the internal connection of 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.

[0032] Example 1:

[0033] like Figures 1 to 6 As shown in the figure, this embodiment illustrates an electromagnetic cooking device, including a base 1 and a panel assembly 2. The panel assembly 2 includes a top cover 21, a first panel 22, and a second panel 23. The top cover 21 is spliced ​​with the base 1. The first panel 22 is fixed to the top of the top cover 21 and has mounting holes. The second panel 23 is fixed to the first panel 22 and covers the mounting holes. The base 1 contains a heating device, a heat dissipation device 3, and a main control board 5. The heating device is a coil 4, which is located below the second panel 23. When the coil 4 is energized, it forms a heating zone on the upper side of the second panel 23, thereby heating the pot placed on the second panel 23. The heat dissipation device 3 includes a fan 31 and a fan surrounded by a fan. The base 1 has an air inlet 34 at the bottom, located below the fan 31. The fan 31 has an air outlet 35 on the side near the coil 4. When the fan 31 is started, the outside airflow enters the base 1 through the air inlet 34 and is blown toward the coil 4 through the air outlet 35 under the guidance of the air guide shroud. This allows the airflow to dissipate heat from the coil 4. In order for the heat dissipation device 3 to simultaneously dissipate heat from the main control board 5, the main control board 5 is installed below the coil 4 in this embodiment, so that the main control board 5 is close to the heat dissipation device 3 and is located in front of the air outlet 35. This ensures that the airflow can dissipate heat from the main control board 5.

[0034] It should be noted that in this embodiment, the second panel 23 is a concave panel, and the corresponding coil 4 is also a concave structure. The middle part of the concave panel passes through the mounting hole of the first panel 22 and extends into the interior of the base 1. The edge of the concave panel is mounted on the first panel 22. In addition, in order to reduce the possibility of damage to the concave panel, a support ring 24 is installed at the edge of the concave panel in this embodiment. The support ring 24 can support the cookware to avoid direct contact between the cookware and the concave panel and reduce the possibility of the concave panel breaking. In addition, one side of the support ring 24 is fixed to the surface of the first panel 22 with adhesive, and the other side extends to the upper side of the edge of the concave panel and is bent downward and fixed to the upper surface of the concave panel so that the support ring 24 wraps around the edge of the concave panel.

[0035] It is understandable that in other embodiments, the second panel 23 may also be a planar structure, and the corresponding coil disk 4 may also be a planar structure; or in other embodiments, the panel assembly 2 may only include a complete first panel 22.

[0036] like Figure 3 and Figure 4 As shown, in this embodiment, the fan 31 includes a drive motor 331 and a fan blade 332. The output end of the drive motor 331 extends downward, and the fan blade 332 is circumferentially distributed on the outer periphery of the drive motor 331 and is connected to the output end of the drive motor 331. The air inlet 34 is distributed below the fan blade 332. A guide groove 321 is formed between the bottom of the wind shield 32 and the fan blade 332. The end of the guide groove 321 is connected to the air outlet 35. The guide groove 321 includes an outer wall 322 and an inner wall 323. In the radial direction of the fan 31, the outer wall 322 is located outside the fan blade 332, and the inner wall 323 is located inside the fan blade 332 or at the location of the drive motor 331.

[0037] The driving motor 331 is started to drive the fan blade 332 to rotate and form an upward airflow in this embodiment. The airflow enters the base 1 from the air inlet 34, flows to the wind shield 32 through the fan blade 332, and directly enters the flow guide groove 321 from the outer peripheral side of the driving motor 331. The airflow changes direction under the action of the wind shield 32, and part of the airflow flows towards the outer side wall 322 or the inner side wall 323. The outer side wall 322 and the inner side wall 323 can limit the airflow, so that more airflow can be gathered in the flow guide groove 321, and then flow to the air outlet 35 under the guidance of the flow guide groove 321. In addition, the inner side wall 323 can limit the airflow from flowing to the middle part of the wind shield 32, avoid the phenomenon of mutual collision of the airflow, reduce the possibility of turbulence of the airflow, reduce the energy loss of the airflow, so that the airflow can still maintain a higher flow rate when leaving the air outlet 35, thereby achieving better heat dissipation effect, reducing the noise generated by the heat dissipation device 3, and improving the user experience. Secondly, the flow guide groove 321 gathers and guides the airflow to the air outlet 35, can form a stable and orderly airflow path, which helps to reduce the energy loss of the airflow, thereby providing stable and continuous cooling airflow for the coil disc 4, effectively improving the heat dissipation effect of the heat dissipation device 3, slowing down the heating speed of the coil disc 4, avoiding the coil disc 4 being in an overheated state for a long time, and prolonging the service life of the coil disc 4.

[0038] It should be noted that in other embodiments, the outer side wall 322 of the driving motor 331 can also be the inner side wall 323 of the flow guide groove 321. In this embodiment, the bottom end surface of the wind shield 32 abuts against the top end surface of the driving motor 331, and the flow guide groove 321 is formed on the outer peripheral side of the driving motor 331.

[0039] As Figure 4 and Figure 5As shown, the guide groove 321 in the embodiment is in the shape of C as a whole, both ends of the guide groove 321 are communicated with the air outlet 35, the side wall of the wind shield 32 forms the outer side wall 322 of the guide groove 321, the inner side wall 323 is annularly fixed to the bottom of the wind shield 32, and the inner side wall 323 is concave downward from the bottom of the wind shield 32, that is, the inner side wall 323 is in an integral structure with the wind shield 32, thereby reducing the fixing difficulty of the inner side wall 323 and the wind shield 32, without the need of using other fasteners to fix the inner side wall 323, which helps to improve the manufacturing efficiency of the wind shield 32; in addition, the integral structure can enhance the strength of the wind shield 32, reduce the possibility of deformation of the wind shield 32 due to high temperature, help to prolong the service life of the wind shield 32, and at the same time, can improve the connection stability of the wind shield 32 and the inner side wall 323, avoid the inner side wall 323 from separating from the wind shield 32, and make the guidance of the guide groove 321 to the airflow more stable and reliable; in addition, the top end of the inner side wall 323 can form a seamless connection with the wind shield 32, thereby reducing the airflow from the connection between the inner side wall 323 and the wind shield 32 to separate from the guide groove 321, making the guide groove 321 be able to converge more airflow, so that the air outlet 35 has greater flow, which helps to improve the heat dissipation effect of the heat dissipation device 3.

[0040] In order to further reduce the airflow from the guide groove 321, the bottom end of the inner side wall 323 in the embodiment extends downward and abuts against the top end of the driving motor 331, since the airflow flows upward from the bottom of the driving motor 331 into the guide groove 321, the inner side wall 323 is fixed at the top of the driving motor 331, the bottom of the inner side wall 323 and the driving motor 331 are kept closed, the airflow is prevented from entering the middle part of the wind shield 32 between the inner side wall 323 and the driving motor 331 to separate from the guide groove 321, more airflow can be converged in the guide groove 321, the loss of airflow energy is reduced, the airflow keeps a high flow rate, so as to provide continuous and stable airflow to the coil disc 4, which helps to improve the heat dissipation effect of the heat dissipation device 3; in addition, when the inner side wall 323 abuts against the driving motor 331, the inner side wall 323 can also form effective support for the wind shield 32, which helps to improve the strength of the wind shield 32 and reduce the possibility of the middle part of the wind shield 32 collapsing downward, can avoid the deformation of the wind shield 32 due to high temperature, and help to prolong the service life of the wind shield 32.

[0041] Of course, it can be understood that in other embodiments, the inner side wall 323 can also be a separate structure from the wind shield 32, the top end of the inner side wall 323 is fixedly connected with the wind shield 32, and the bottom end of the inner side wall 323 abuts against the top end of the drive motor 331; or, the inner side wall 323 can also be fixedly connected with the drive motor 331 at the bottom end, and the top end of the inner side wall 323 abuts against the bottom of the wind shield 32; or, the inner side wall 323 can also be independently arranged, the top end of the inner side wall 323 abuts against the wind shield 32, and the bottom end of the inner side wall 323 abuts against the top of the drive motor 331.

[0042] In the embodiment, the inner side wall 323 is a whole inverted conical structure, that is, the inner side wall 323 gradually inclines to the flow guide groove 321 from the bottom end to the top end, and the inner side wall 323 is a smooth curved surface in the circumferential direction of the fan 31. The airflow formed by the fan 31 rises from the bottom of the fan 31 into the flow guide groove 321. During the rising of the airflow along the inner side wall 323, the inner side wall 323 can guide the airflow to converge to the middle part of the flow guide groove 321, so as to make the airflow more concentrated, thereby helping to improve the flow rate of the airflow when the airflow leaves the air outlet 35, and providing better heat dissipation effect for the coil disc 4. In addition, the inner side wall 323 is a smooth curved surface in the circumferential direction of the fan 31. During the guiding of the airflow to the air outlet 35 by the flow guide groove 321, the inner side wall 323 avoids forming an obstacle to the airflow, reduces the air resistance suffered by the airflow, reduces the energy loss of the airflow, and helps to improve the heat dissipation effect of the airflow.

[0043] As shown in Figure 4 The bottom end of the outer side wall 322 is provided with an outwardly extending abutting surface 326, the abutting surface 326 abuts against the top end of the side plate 33, the outer periphery of the abutting surface 326 is provided with a downwardly extending blocking rib 325, the blocking rib 325 is located on the side of the side plate 33 away from the fan 31, the wind shield 32 abuts against the side plate 33 through the abutting surface 326, which can improve the assembly stability of the wind shield 32 and the side plate 33. In addition, the blocking rib 325 can also form a limiting cooperation with the side plate 33, which can play a positioning role on the wind shield 32, so that the assembly of the wind shield 32 and the side plate 33 is more stable and reliable, the possibility of dislocation of the wind shield 32 is reduced, and the installation of the wind shield 32 is guided, further reducing the installation difficulty of the wind shield 32. Secondly, the blocking rib 325 extends downward from the wind shield 32 to the outside of the side plate 33, which can reduce the airflow loss between the wind shield 32 and the side plate 33, improve the airflow tightness between the wind shield 32 and the side plate 33, make more airflow converge in the flow guide groove 321, help to improve the wind gathering effect of the flow guide groove 321, and then improve the flow rate at the air outlet 35, so as to improve the heat dissipation effect of the heat dissipation device 3.

[0044] As shown in Figure 4As shown, the top wall of the flow guide groove 321 is upwardly protruding in the embodiment, and the top wall of the flow guide groove 321 is higher than the top end surface of the driving motor 331. The upwardly protruding top wall of the flow guide groove 321 can increase the depth of the flow guide groove 321, so that the flow guide groove 321 can converge more air flow, thereby improving the heat dissipation effect. In addition, the distance between the top wall of the flow guide groove 321 and the fan blade 332 can be increased, thereby reducing the influence of the rotation of the fan blade 332 on the air flow in the flow guide groove 321, so that the flow guide groove 321 can form a stable and orderly air flow path, further improving the heat dissipation effect of the heat dissipation device 3.

[0045] In the embodiment, the bottom of the wind shield 32 is provided with at least one reinforcing rib 324, which is between the inner side wall 323 and the outer side wall 322, that is, the reinforcing rib 324 is on the top wall of the flow guide groove 321. The reinforcing rib 324 is laid along the guiding direction of the flow guide groove 321, and the reinforcing rib 324 is formed by being recessed downward from the top wall of the flow guide groove 321. The bottom end of the reinforcing rib 324 is provided with a guide surface, which can guide the air flow to flow towards the inner side wall 323 or the outer side wall 322. The air flow rises from the lower side of the fan 31 and enters the flow guide groove 321. Part of the air flow flows along the inner side wall 323 to the top wall of the flow guide groove 321, and then flows towards the outer side wall 322. In this process, the air flow passes over the reinforcing rib 324 through the guide surface. Part of the air flow flows along the outer side wall 322 to the top wall of the flow guide groove 321, and then flows towards the inner side wall 323. In this process, the air flow also passes over the reinforcing rib 324 through the guide surface. After the two parts of air flow converge, they flow to the air outlet 35 under the guidance of the flow guide groove 321. Since the reinforcing rib 324 is laid along the guiding direction of the flow guide groove 321, the reinforcing rib 324 does not hinder the flow of the air flow during the flow of the air flow along the flow guide groove 321, thereby reducing the air resistance suffered by the air flow and reducing the energy loss of the air flow, which helps to improve the heat dissipation effect of the air flow. In addition, the reinforcing rib 324 can improve the strength of the wind shield 32 and reduce the possibility of deformation of the wind shield 32 due to high temperature, which helps to prolong the service life of the wind shield 32. By arranging the reinforcing rib 324 in the flow guide groove 321, the possibility of the top wall of the flow guide groove 321 collapsing downward can be reduced, so that the flow guide groove 321 can converge more air flow, which helps to improve the flow at the air outlet 35 and provide better heat dissipation effect for the coil disc 4.

[0046] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Those skilled in the art should understand that the present application includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification of the function and structure principle without deviating from the present application shall be included in the scope of the claims.

Claims

1. An electromagnetic cooking device, comprising a base, a heating device and a heat dissipation device arranged in the base, the heat dissipation device comprising a fan and a fan cover covering the upper side of the fan, the lower side of the fan being provided with an air inlet, and the side close to the heating device being provided with an air outlet, the fan comprising a driving motor and a fan blade, characterized in that, The bottom of the wind shield and the fan blade form a guide groove, the end of the guide groove is connected with the air outlet, the guide groove includes an outer side wall and an inner side wall, in the radial direction of the fan, the outer side wall is located at the outer side of the fan blade, and the inner side wall is located at the inner side of the fan blade or at the position of the driving motor.

2. The electromagnetic cooking device according to claim 1, characterized in that The inner side wall is annularly arranged and fixed to the bottom of the wind shield.

3. The electromagnetic cooking device according to claim 1, characterized in that, The fan blade is rotationally connected to the bottom of the driving motor, and the inner side wall is fixed to the top of the driving motor.

4. The electromagnetic cooking device according to claim 1, characterized in that, The top end of the inner side wall abuts against the wind shield, and the bottom end of the inner side wall abuts against the top of the driving motor.

5. The electromagnetic cooking device according to claim 1, characterized in that, The inner side wall is gradually inclined to the guide groove from the bottom end to the top end, and the inner side wall is a smooth curved surface in the circumferential direction of the fan.

6. The electromagnetic cooking device according to claim 1, characterized in that, The heat dissipation device further includes a side plate arranged around the outer circumferential side of the fan, the wind shield has an abutting surface arranged on the top end of the side plate, and the bottom end of the outer side wall is connected with the abutting surface.

7. The electromagnetic cooking device according to claim 1, characterized in that, The top wall of the guide groove is upwardly protruding, and the top wall of the guide groove is higher than the top end surface of the driving motor.

8. The electromagnetic cooking device according to claim 1, characterized in that, The bottom of the wind shield is provided with at least one reinforcing rib, and the reinforcing rib is located between the inner side wall and the outer side wall.

9. The electromagnetic cooking device according to claim 8, characterized in that The reinforcing rib is formed by downwardly recessing the top wall of the guide groove, and the bottom end of the reinforcing rib is provided with a guide surface to guide the airflow to pass through the reinforcing rib.

10. The electromagnetic cooking device according to claim 1, characterized in that, The heat dissipation device further includes a side plate arranged around the outer circumferential side of the fan, the wind shield is arranged on the side plate, the outer circumferential side of the wind shield is provided with a downwardly extending blocking rib, and the blocking rib is located on the side of the side plate away from the fan.

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