Fan assembly and cooking utensil

Abstract

The utility model provides a fan assembly and a cooking utensil, and relates to the technical field of household appliances. The fan assembly comprises a fan body and a shield. Along the axial direction of the fan body, one side of the fan body is an air inlet end. The protective cover covers the fan body and comprises a first air blocking part and a second air blocking part, the first air blocking part is arranged on the side, away from the air inlet end, of the fan body in the axial direction of the fan body, the second air blocking part surrounds part of the periphery of the fan body, and a first air outlet and a second air outlet are defined by the first air blocking part and the second air blocking part. Wherein the first air outlet is used for corresponding to the first heating element, and the second air outlet is used for corresponding to the second heating element. According to the fan assembly, under the condition that high-power output of the cooking utensil is kept, the problem that the working performance of the cooking utensil is affected due to the fact that temperature rise of the heating element is too high is not prone to occurring.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, specifically to a fan assembly and a cooking appliance. Background Technology

[0002] Cooking appliances such as induction cookers are increasingly favored and recognized by consumers due to their advantages such as rapid heating, no open flame, safety, and convenience. When an induction cooker is working, it uses high-frequency alternating current to pass through a coil, generating a high-frequency changing magnetic field. This high-frequency changing magnetic field induces eddy currents at the bottom of metal cookware placed on the induction cooker, thus heating the food inside.

[0003] As users' demands for cooking experiences such as stir-frying and hot pot using induction cookers increase, their requirements for the power output and the duration of high power are also rising. However, continuous high power output from an induction cooker leads to increased temperature rise in heating elements (coil, IGBT module, etc.), making it difficult for the fan to meet the heat dissipation needs of these elements.

[0004] In related technologies, the problem of excessively high heating element temperature is usually solved by reducing the output power of the induction cooker or the duration of high power. However, this will affect the user's cooking experience. Utility Model Content

[0005] This application provides a fan assembly and a cooking appliance that can prevent the heating element from overheating and affecting the working performance of the cooking appliance while maintaining high power output.

[0006] On one hand, this application provides a fan assembly, which includes:

[0007] The fan body has an air inlet end on one side along its axial direction.

[0008] A protective cover is provided on the fan body. The protective cover includes a first wind-blocking part and a second wind-blocking part. Along the axial direction of the fan body, the first wind-blocking part is located on the side of the fan body away from the air inlet end, and the second wind-blocking part surrounds a portion of the outer periphery of the fan body. The first wind-blocking part and the second wind-blocking part surround to form a first air outlet and a second air outlet.

[0009] The first air outlet is used to correspond to the first heating element, and the second air outlet is used to correspond to the second heating element.

[0010] The fan assembly provided in this application allows the fan body to rotate around its own axis to generate airflow within the cooking appliance. The airflow enters through the air inlet of the fan body. A first baffle and a second baffle can obstruct the airflow, directing the airflow generated by the fan body towards the first and second air outlets.

[0011] By positioning the first air outlet corresponding to the first heating element, a portion of the airflow generated by the fan can be directly directed towards the heating element, primarily for heat dissipation. This reduces the likelihood of the heating element overheating during continuous high-power operation, preventing it from triggering its temperature protection and forcing the appliance to reduce power, thus impacting the user's cooking experience. Furthermore, the precise heat dissipation from the first air outlet ensures the heating element doesn't overheat, guaranteeing stable operation and extending its lifespan.

[0012] Similarly, by positioning the second air outlet corresponding to the second heating element, at least a portion of the airflow generated by the fan can be directly directed towards the second heating element. This primarily dissipates heat from the second heating element, reducing the likelihood of it overheating and triggering its temperature protection mechanism when the cooking appliance is operating at high power. This would force the appliance to reduce its power output, impacting the user's cooking experience. Furthermore, the precise heat dissipation from the second air outlet prevents the heating element from overheating, ensuring stable operation and extending its lifespan.

[0013] Therefore, the protective cover can directly apply the airflow generated by the fan body to the first and second heating elements, which are prone to temperature rise. This ensures the operational reliability of the first and second heating elements while allowing the cooking appliance to output high power to meet the user's cooking needs. This is beneficial for improving the operational reliability of the cooking appliance and extending the service life of the first and second heating elements.

[0014] Furthermore, since the fan assembly in this application embodiment can achieve precise heat dissipation of the first heating element and the second heating element, it is not necessary to use high-power motors or other methods to improve the heat dissipation efficiency of the first heating element and the second heating element, which helps to reduce the production cost of cooking appliances.

[0015] According to one embodiment of this application, the first windbreak portion is provided with a first extension portion toward the first heating element at the first air outlet, and at least a portion of the first extension portion is located on the side of the first heating element away from the air inlet end.

[0016] Along the axial direction of the fan body, there is an overlapping area between the orthographic projection of the first extension and the orthographic projection of the first heating element.

[0017] By extending the first extension a certain distance toward the first heating element, the airflow generated by the operation of the fan body can be directed to the first heating element, thereby achieving precise heat dissipation of the first heating element.

[0018] Specifically, by providing at least a portion of the first extension extending to the side of the first heating element away from the air inlet, the at least portion of the first extension can be located above the first heating element. The first extension can guide a portion of the airflow generated by the fan body above the first heating element, allowing the heat transferred downwards from the cookware to dissipate more effectively. Furthermore, the first extension can reduce the possibility of airflow rising before reaching the first heating element, thus reducing the airflow to the first heating element and affecting its heat dissipation effect.

[0019] Therefore, it is readily understood that in the embodiments of this application, at least a portion of the first heating element can be located within the space enclosed by the first and second windbreaks. Airflow can flow around, below, and above at least a portion of the first heating element to precisely dissipate heat from the first heating element, thereby improving the heat dissipation effect on the first heating element.

[0020] According to one embodiment of this application, along the axial direction of the fan body, there is a gap between the first extension and the first heating element, the gap being greater than 0 mm and less than or equal to 10 mm.

[0021] By setting the distance between the first extension and the first heating element to be greater than 0 mm, it is possible to prevent the first extension from colliding or interfering with the first heating element when the fan assembly is fixed to the housing of the cooking appliance. Furthermore, the distance between the first extension and the first heating element provides space for airflow, allowing the airflow to act on at least a portion of the upper surface of the heating element.

[0022] By setting the distance between the first extension and the first heating element to be less than or equal to 10mm, sufficient airflow can be provided to part of the upper surface of the first heating element, while ensuring that the fan assembly does not occupy too much thickness of the cooking appliance, so that the thickness of the cooking appliance is not too thick and will affect the thinness of the cooking appliance.

[0023] According to one embodiment of this application, the first windbreak portion is provided with a connected second extension and an inclined air guide rib at the second air outlet. The inclined air guide rib is inclined relative to the second extension portion toward the air inlet end and toward the second heating element.

[0024] The second extension extends towards the second heating element. The inclined air guide rib can be located at the edge of the second extension and slopes downwards towards the second heating element. When the second heating element is an IGBT module, it is mounted on the power board. Since there is a height difference between the power board and the first heating element (coil), with the power board being lower than the first heating element, the downward-sloping air guide rib can direct the airflow generated by the fan body towards the second heating element on the power board.

[0025] In some examples, the power board may also have a heatsink that is attached to the second heat-generating element, so as to improve the heat dissipation efficiency of the second heat-generating element through the larger heat dissipation surface of the heatsink. By tilting the air guide ribs downward, the airflow generated by the fan body can be directed towards the heatsink. Thus, the tilted air guide ribs can direct some airflow directly towards the second heat-generating element, or direct some airflow directly towards the heatsink, so as to more effectively improve the heat dissipation efficiency of the second heat-generating element.

[0026] According to one embodiment of this application, the angle between the inclined air guide rib and the second extension is an obtuse angle; and / or,

[0027] Along the axial direction of the fan body, the distance between the free end of the inclined air guide rib and the second extension is greater than or equal to 2 mm and less than or equal to 10 mm.

[0028] By setting the angle between the inclined air guide rib and the second extension to an obtuse angle, the airflow can be directed to the second heating element, thereby reducing the airflow loss during the flow of air to the second heating element and ensuring that sufficient airflow can flow to the second heating element.

[0029] Specifically, when the distance between the inclined air guide rib and the second extension is less than 2mm, the inclined air guide rib is unable to effectively guide airflow. The airflow directed to the second heating element is insufficient, resulting in ineffective heat dissipation for the heating element. When the distance between the inclined air guide rib and the second extension is greater than 10mm, the extension length of the inclined air guide rib is too long, easily occupying a large amount of internal space in the cooking appliance, leading to an increase in the overall size of the appliance. Therefore, by setting the distance between the inclined air guide rib and the second extension to be greater than or equal to 2mm and less than or equal to 10mm, the above technical problems can be effectively solved.

[0030] According to one embodiment of this application, the first windbreak portion is provided with a guide portion for connecting with the second windbreak portion, the guide portion extending in an arc shape.

[0031] The arc-shaped air guide can reduce airflow resistance, resulting in greater air pressure above the fan body. This increases the speed of air intake and exhaust, as well as the air volume, thus providing more airflow to the first and second heating elements. This is beneficial for improving the heat dissipation efficiency and effect of the first and second heating elements.

[0032] Furthermore, the air guide section can concentrate airflow, allowing at least a portion of the airflow generated by the fan body to be concentrated above the fan body. Since the air guide section can extend in an arc shape, it can guide airflow and increase its adhesion to the wall. The airflow can flow along and adhere closely to the inner wall of the air guide section, thus more effectively directing the airflow to the first and second heating elements through the arc-shaped inner wall of the air guide section.

[0033] According to one embodiment of this application, the protective cover further includes a windbreak rib, which is disposed on the side of the second windbreak portion away from the air inlet end. The windbreak rib is folded outward along the circumference of the fan body and is used to overlap the air duct of the outer casing.

[0034] By setting up windproof ribs, airflow can be blocked from flowing out to the outside of the protective cover through the gap between the second windproof part and the air duct, reducing the loss of airflow to the first heating element and the second heating element, so that more airflow can act on the first heating element and the second heating element.

[0035] According to one embodiment of this application, along the circumferential direction of the fan body, the diameter of the outer contour of the fan body is less than or equal to the diameter of the outer contour of the air guide portion, and the diameter of the outer contour of the air guide portion is less than or equal to the diameter of the inner contour of the windbreak rib.

[0036] By setting the diameter of the outer contour of the fan body to be less than or equal to the diameter of the outer contour of the air guide, it is possible to prevent the fan body from colliding with the air guide of the cover during the assembly process. This reduces the possibility that the air guide will obstruct the movement of the fan body during its rotation, thus preventing the fan body from malfunctioning.

[0037] By setting the diameter of the outer contour of the air guide to be less than or equal to the diameter of the inner contour of the windbreak rib, the windbreak rib can be placed on the wind duct to block the airflow and reduce the possibility of airflow flowing out through the gap between the second windbreak and the wind duct.

[0038] According to one embodiment of this application, along the axial direction of the fan body, the distance between the first baffle and the fan body is greater than or equal to 2 mm and less than or equal to 20 mm; and / or,

[0039] By setting the distance between the first baffle and the fan body to be greater than or equal to 2mm, space can be provided for airflow, reducing the possibility that if the distance between the first baffle and the fan body is too small, airflow will be difficult to pass through or abnormal noise will occur. By setting the distance between the first baffle and the fan body to be less than or equal to 20mm, the cover will not occupy the space above the fan body, thus reducing the possibility of affecting the overall size of the cooking appliance.

[0040] Along the axial direction of the fan body, the distance between the shield and the panel is greater than or equal to 0.5 mm and less than or equal to 2 mm.

[0041] By setting the gap between the cover and the panel to be greater than or equal to 0.5mm, the assembly requirements of cooking utensils can be met, the possibility of collision or interference between the top of the panel and the cover can be avoided, and the possibility of the panel breaking during transportation due to excessive fit between the panel and the cover can also be reduced.

[0042] By setting the gap between the protective cover and the panel to be less than or equal to 2mm, the thickness of the cooking utensils can be kept from being too large while meeting the assembly requirements, which is conducive to making the cooking utensils thinner and lighter.

[0043] On the other hand, this application provides a cooking utensil that includes:

[0044] The housing has an air inlet at its bottom;

[0045] A first heating element is disposed in the housing;

[0046] A second heating element is disposed in the housing;

[0047] In any of the above embodiments, the air inlet of the fan assembly corresponds to the air inlet port, the first air outlet of the protective cover corresponds to the first heating element, and the second air outlet of the protective cover corresponds to the second heating element.

[0048] By setting the first air outlet of the protective cover to correspond to the first heating element and the second air outlet to correspond to the second heating element, the airflow generated by the fan body can act more on the first and second heating elements. This can improve the heat dissipation efficiency of the first and second heating elements when the cooking appliance is continuously outputting high power, thus enabling the cooking appliance to operate stably.

[0049] In addition to the technical problems solved by the embodiments of the present invention, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions as described above, other technical problems solved by the fan assembly and cooking appliance provided by the embodiments of the present invention, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0050] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0051] Figure 1 This is a three-dimensional structural diagram of a cooking appliance according to an embodiment of this application;

[0052] Figure 2 This is a partial top view of a cooking appliance according to an embodiment of this application;

[0053] Figure 3 This is a three-dimensional exploded view of a cooking appliance according to an embodiment of this application;

[0054] Figure 4 This is a first-view perspective three-dimensional structural diagram of the protective cover according to an embodiment of this application;

[0055] Figure 5 This is a second-view perspective three-dimensional structural diagram of the protective cover according to an embodiment of this application;

[0056] Figure 6 This is a cross-sectional structural diagram of a protective cover according to an embodiment of this application;

[0057] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0058] Figure 8 This is another cross-sectional view of the protective cover according to an embodiment of this application;

[0059] Figure 9 for Figure 8 Enlarged view of point B in the middle;

[0060] Figure 10 This is another partial top view of a cooking appliance according to an embodiment of this application;

[0061] Figure 11 This is a bottom view of the protective cover according to an embodiment of this application.

[0062] Explanation of reference numerals in the attached figures:

[0063] 10-Cooking utensils;

[0064] 100-Fan assembly;

[0065] 110 - Fan body; 110a - Air inlet end;

[0066] 120-Shield;

[0067] 120a - First air outlet; 120b - Second air outlet; 120c - Mounting hole; 120d - Positioning hole;

[0068] 121-First windbreak section; 1211-First extension section; 1212-Second extension section; 1213-Air guide section; 1214-Inclined air guide rib;

[0069] 122 - Second windbreak;

[0070] 123-Windbreak reinforcement bars;

[0071] 200 - Housing; 200a - Air inlet; 210 - Air duct;

[0072] 300 - First heating element;

[0073] 400 - Second heating element;

[0074] 500 - Power supply board; 510 - Heatsink;

[0075] 600-panel;

[0076] X-axis.

[0077] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0078] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. Clearly, the described embodiments are only a portion, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0079] Cooking appliances such as induction cookers are commonly used heating devices that can be used with cookware. Taking an induction cooker as an example, a cooking appliance can include a control panel, a housing, and a coil. The control panel and housing can form a relatively sealed cavity to shield the internal power board, coil, and other live components that are in operation.

[0080] The power board is electrically connected to the coil, allowing the power board to control the opening and closing of the coil. During operation, the high-frequency current passing through the coil generates numerous enclosed magnetic fields. These magnetic lines of force cut through the cookware, generating countless small eddy currents that heat the cookware placed on the control panel.

[0081] The power board of cooking appliances contains IGBT (Insulated Gate Bipolar Transistor) modules, filter circuits, rectifier bridges, and other functional modules. During operation, the IGBT modules are prone to generating heat.

[0082] The magnetic field generated when current flows through the induction cooker coil, and the eddy currents created by the interaction of this magnetic field with the bottom of the pot, cause the induction cooker to generate a significant amount of heat during operation. If this heat cannot be dissipated in time, the internal temperature of the induction cooker will continue to rise, affecting its performance and accelerating the aging and damage of its internal components. Therefore, induction cookers are usually equipped with a fan. The fan helps to remove the heat from inside the induction cooker.

[0083] As users' demands for cooking experiences with induction cookers, such as stir-frying and hot pot, increase, their requirements for the power output and duration of high power are also rising. However, continuous high power output from an induction cooker leads to increased temperature rise of the heating element. The fan alone cannot adequately meet the cooling needs of the heating element. When the heating element's temperature rises too high and reaches its own protection point, the cooking appliance is forced to reduce its power output, affecting the user's cooking experience. If the heating element remains at a high temperature, it will affect its performance and lifespan, thus impacting the lifespan of the induction cooker.

[0084] In related technologies, the problem of excessively high heating element temperature is usually solved by reducing the output power of the induction cooker or the duration of high power. However, this can negatively impact the user's cooking experience.

[0085] Based on the aforementioned technical problems, the applicant has improved the structure of the existing fan assembly. In this embodiment, the protective cover has a first air outlet corresponding to the first heating element. The first air outlet can provide airflow to the first heating element for precise heat dissipation. Furthermore, the protective cover has a second air outlet corresponding to the second heating element. The second air outlet can provide airflow to the first heating element for precise heat dissipation. Therefore, the protective cover allows the airflow generated by the fan body to act more effectively on the first and second heating elements, so that when the cooking appliance is continuously outputting high power, the heat from the first and second heating elements, which are prone to temperature rise, can be promptly removed to the outside of the cooking appliance, thereby ensuring the normal operation of the cooking appliance.

[0086] The fan assembly 100 and cooking appliance 10 provided in this application are described below with reference to the accompanying drawings and specific embodiments.

[0087] See Figures 1 to 5 As shown, the fan assembly 100 in this embodiment of the application includes a fan body 110 and a protective cover 120.

[0088] Along the axial direction X of the fan body 110, one side of the fan body 110 is an air inlet end 110a. A protective cover 120 is provided on the fan body 110. The protective cover 120 includes a first wind-blocking portion 121 and a second wind-blocking portion 122. Along the axial direction X of the fan body 110, the first wind-blocking portion 121 is disposed on the side of the fan body 110 away from the air inlet end 110a. The second wind-blocking portion 122 surrounds a portion of the outer periphery of the fan body 110. The first wind-blocking portion 121 and the second wind-blocking portion 122 form a first air outlet 120a and a second air outlet 120b.

[0089] The first air outlet 120a is used to correspond to the first heating element 300, and the second air outlet 120b is used to correspond to the second heating element 400.

[0090] It should be noted that during the operation of the cooking appliance 10, especially when the cooking appliance 10 is operating at high power, the first heating element 300 and the second heating element 400 are internal components that are prone to temperature rise. Examples include coils and IGBT modules. In this embodiment, the first heating element 300 and the second heating element 400 are not limited. For ease of description, this embodiment uses a coil as the first heating element 300 and an IGBT module as the second heating element 400 as an example.

[0091] In this embodiment, the fan body 110 can rotate around its own axis to generate airflow within the cooking appliance 10. The airflow can enter through the air inlet 110a of the fan body 110. The first baffle 121 and the second baffle 122 can block the airflow, causing the airflow generated by the fan body 110 to flow towards the first air outlet 120a and the second air outlet 120b.

[0092] By positioning the first air outlet 120a corresponding to the first heating element 300, a portion of the airflow generated by the fan body 110 can be directly directed towards the first heating element 300, primarily for heat dissipation. This reduces the likelihood of the first heating element 300 overheating during continuous high-power output of the cooking appliance 10, thus mitigating the risk of triggering its temperature protection and forcibly reducing power output, thereby impacting the user's cooking experience. Furthermore, the precise heat dissipation from the first air outlet 120a prevents the first heating element 300 from overheating, ensuring stable operation and extending its lifespan.

[0093] Similarly, by positioning the second air outlet 120b corresponding to the second heating element 400, at least a portion of the airflow generated by the fan body 110 can be directly directed towards the second heating element 400. This primarily dissipates heat from the second heating element, reducing the likelihood of excessive temperature rise in the second heating element 400 during continuous high-power output of the cooking appliance 10. This reduces the possibility of triggering the temperature protection mechanism of the second heating element 400, forcibly reducing the power output of the cooking appliance 10, and thus affecting the user's cooking experience. Furthermore, the precise heat dissipation from the second air outlet 120b ensures that the temperature of the second heating element 400 does not become excessively high, guaranteeing stable operation and extending its lifespan.

[0094] Therefore, the protective cover 120 can directly apply the airflow generated by the fan body 110 to the first heating element 300 and the second heating element 400, which are prone to temperature rise. This ensures the operational reliability of the first heating element 300 and the second heating element 400 while the cooking appliance 10 outputs high power to meet the user's cooking needs. This is beneficial to improving the operational reliability of the cooking appliance 10 and extending the service life of the first heating element 300 and the second heating element 400.

[0095] Furthermore, since the fan assembly 100 of this application embodiment can achieve precise heat dissipation of the first heating element 300 and the second heating element 400, it is not necessary to use a high-power motor or other means to improve the heat dissipation efficiency of the first heating element 300 and the second heating element 400, which is beneficial to reducing the production cost of the cooking appliance 10.

[0096] In some examples, when the cooking appliance 10 is placed on a horizontal workbench, the axial direction X of the fan body 110 can be vertical. The air inlet 110a can be located at the bottom of the cooking appliance 10. When the shroud 120 is provided over the fan body 110, at least a portion of the first air deflector 121 can be located above the fan body 110.

[0097] In some examples, the shield 120 and the fan body 110 may be detachably connected to facilitate maintenance of both in the event of a malfunction in the fan body 110 or damage to the shield 120. The shield 120 and the fan body 110 may be assembled to form the fan assembly 100 before being fixed to the housing 200 of the cooking appliance 10.

[0098] For example, the shield 120 and the fan body 110 can be locked together by means of, but not limited to, fasteners. See also... Figure 4 and Figure 5 As shown, the protective cover 120 and the fan body 110 may also be provided with corresponding mounting holes 120c for fixing the two together. When the fan body 110 is running, the protective cover 120 can remain relatively stationary and is not prone to shaking and producing abnormal noise.

[0099] In addition, the shield 120 and the fan body 110 may be provided with corresponding positioning holes 120d, so that after the shield 120 and the fan body 110 are connected, the first air outlet 120a of the shield 120 can correspond to the first heating element 300, and the second air outlet 120b can correspond to the second heating element 400.

[0100] See also some of the possible implementation methods. Figure 2 , Figures 4 to 7 As shown, in this embodiment of the application, the first windbreak portion 121 is provided with a first extension portion 1211 facing the first heating element 300 at the first air outlet 120a. At least a portion of the first extension portion 1211 may be located on the side of the first heating element 300 facing away from the air inlet end 110a. Along the axial direction X of the fan body 110, there is an overlapping area between the orthographic projection of the first extension portion 1211 and the orthographic projection of the first heating element 300.

[0101] In this embodiment, the first extension 1211 can extend a certain distance toward the first heating element 300 to guide the airflow generated by the operation of the fan body 110 to the first heating element 300, thereby achieving precise heat dissipation of the first heating element 300.

[0102] Specifically, by providing at least a portion of the first extension 1211 extending to the side of the first heating element 300 facing away from the air inlet 110a, at least a portion of the first extension 1211 can be located above the first heating element 300. The first extension 1211 can guide part of the airflow generated by the fan body 110 to the area above the first heating element 300, allowing the heat transferred downwards from the cookware to dissipate more effectively. Furthermore, the first extension 1211 can reduce the possibility that airflow will flow upwards before reaching the first heating element 300, resulting in reduced airflow to the first heating element 300 and thus affecting the heat dissipation effect on the first heating element 300.

[0103] Therefore, it is readily understood that in this embodiment, at least a portion of the first heating element 300 may be located within the space enclosed by the first windbreak portion 121 and the second windbreak portion 122. Airflow may flow around, below, and above at least a portion of the first heating element 300 to precisely dissipate heat from the first heating element 300, thereby improving the heat dissipation effect of the first heating element 300.

[0104] In some examples, along the thickness direction of the cooking appliance 10, the height of the first extension 1211 relative to the bottom of the housing 200 may be greater than or equal to the height of the upper surface of the first heating element 300 relative to the bottom of the housing 200.

[0105] See also some of the possible implementation methods. Figure 3 As shown, along the axial direction X of the fan body 110, there is a distance H1 between the first extension 1211 and the first heating element 300. The distance H1 between the first extension 1211 and the first heating element 300 is greater than 0 mm and less than or equal to 10 mm.

[0106] In this embodiment, by setting the distance H1 between the first extension 1211 and the first heating element 300 to be greater than 0 mm, the first extension 1211 is less likely to collide or interfere with the first heating element 300 when the fan assembly 100 is fixed to the housing 200 of the cooking appliance 10. Furthermore, the distance H1 between the first extension 1211 and the first heating element 300 provides space for airflow, allowing the airflow to act on at least a portion of the upper surface of the heating element.

[0107] By setting the distance H1 between the first extension 1211 and the first heating element 300 to be less than or equal to 10mm, sufficient airflow can be provided to part of the upper surface of the first heating element 300, so that the fan assembly 100 does not occupy too much thickness of the cooking appliance 10, thus preventing the cooking appliance 10 from being too thick and affecting its thinness.

[0108] In some examples, the first extension 1211 may have a plate-like structure. For example, a flat plate structure or a plate-like structure with an arc surface is not limited in the embodiments of this application. Furthermore, the embodiments of this application do not limit the specific shape of the first extension 1211, as long as it can guide airflow above the first heating element 300 and meets the assembly requirements with other components.

[0109] See also some of the possible implementation methods. Figure 4 , Figure 5 , Figure 8 and Figure 9 As shown, in this embodiment of the application, the first windbreak portion 121 is provided with a connected second extension portion 1212 and an inclined air guide rib 1214 at the second air outlet 120b. The inclined air guide rib 1214 is inclined relative to the second extension portion 1212 toward the air inlet end 110a and toward the second heating element 400.

[0110] In this embodiment, the second extension 1212 can extend towards the second heating element 400. The inclined air guide rib 1214 can be located at the edge of the second extension 1212 and inclined downward towards the second heating element 400. When the second heating element 400 is an IGBT module, the second heating element 400 is disposed on the power board 500. Since there is a certain height difference between the power board 500 and the first heating element 300 (coil), and the height of the power board 500 is lower than the height of the first heating element 300, by setting the inclined air guide rib 1214 to be inclined downward, the airflow generated by the fan body 110 can be directed to the second heating element 400 on the power board 500.

[0111] In some examples, the power board 500 may also be provided with a heat sink 510 that is in contact with the second heat-generating element 400, so as to improve the heat dissipation efficiency of the second heat-generating element 400 through the larger heat dissipation surface of the heat sink 510. By tilting the inclined air guide 1214 downward, the airflow generated by the fan body 110 can be directed towards the heat sink 510. Thus, the inclined air guide 1214 can direct some airflow directly towards the second heat-generating element 400, and can also direct some airflow directly towards the heat sink 510, so as to more effectively improve the heat dissipation efficiency of the second heat-generating element 400.

[0112] In some examples, the power board 500 houses various electronic components. Along the radial direction of the fan body 110, the edge of the second extension 1212 may be spaced from the power board 500 to reduce the possibility of contact between the inclined air guide rib 1214 and the electronic components on the power board 500, thus preventing damage to the electronic components. Furthermore, when the shield 120 is made of a metallic material, the possibility of contact between the shield 120 and the electronic components, thus preventing damage to the electronic components, can be reduced.

[0113] In some examples, the second extension 1212 does not extend above the power board 500 to avoid contact between the tilting air guide and the electronic components on the power board 500 when tilted downwards. Therefore, the second extension 1212 and the tilting air guide 1214 do not occupy the space above the power board 500, thus not easily affecting the overall thickness of the cooking appliance 10.

[0114] In some examples, the first extension 1211 and the second extension 1212 may be connected, or the first extension 1211 and the second extension 1212 may not be connected. No specific limitation is made in the embodiments of this application.

[0115] See also some of the possible implementation methods. Figure 9 As shown, the angle N between the inclined air guide rib 1214 and the second extension 1212 in this embodiment of the application is an obtuse angle.

[0116] In this embodiment, the second heating element 400 is located below the power board 500. By setting the angle between the inclined air guide rib 1214 and the second extension 1212 to an obtuse angle, the airflow can be guided to the second heating element 400 to reduce airflow loss during the flow of air to the second heating element 400, so that sufficient airflow can flow to the second heating element 400.

[0117] In some feasible ways, along the axial direction X of the fan body 110, the distance H2 between the free end of the inclined air guide rib 1214 and the second extension 1212 is greater than or equal to 2 mm and less than or equal to 10 mm.

[0118] It should be noted that the free end of the inclined air guide rib 1214 can refer to the end of the inclined air guide rib 1214 that is away from the second extension 1212.

[0119] When the distance H2 between the free end of the inclined air guide rib 1214 and the second extension 1212 is less than 2mm, the inclined air guide rib 1214 is unable to effectively guide airflow. The airflow directed to the second heating element 400 is insufficient, resulting in insignificant heat dissipation for the second heating element 400. When the distance H2 between the free end of the inclined air guide rib 1214 and the second extension 1212 is greater than 10mm, the extension length of the inclined air guide rib 1214 is too long, easily occupying a large amount of internal space in the cooking appliance 10, leading to an increase in the overall size of the cooking appliance 10. Therefore, by setting the distance H2 between the free end of the inclined air guide rib 1214 and the second extension 1212 to be greater than or equal to 2mm and less than or equal to 10mm, the above technical problems can be effectively solved.

[0120] See also some of the possible implementation methods. Figures 4 to 9As shown, in this embodiment of the application, the first windbreak portion 121 is provided with a guide portion 1213 for connecting with the second windbreak portion 122. The guide portion 1213 extends in an arc shape.

[0121] In this embodiment, the arc-shaped air guide 1213 can reduce airflow resistance, thereby generating greater air pressure above the fan body 110, which increases the speed of air intake and exhaust of the fan body 110 and increases the air intake volume. This can provide more airflow for the first heating element 300 and the second heating element 400, which is beneficial to improving the heat dissipation efficiency and effect of the first heating element 300 and the second heating element 400.

[0122] Furthermore, the air guide 1213 can concentrate airflow, allowing at least a portion of the airflow generated by the fan body 110 to be concentrated above the fan body 110. Since the air guide 1213 can extend in an arc shape, it can guide airflow and increase its adhesion to the wall. The airflow can flow along the inner wall of the air guide 1213 and adhere closely to it, thus the arc-shaped inner wall of the air guide 1213 can more effectively guide the airflow to the first heating element 300 and the second heating element 400.

[0123] See also some of the possible implementation methods. Figures 4 to 9 As shown, the protective cover 120 may also include a windbreak rib 123. The windbreak rib 123 is disposed on the side of the second windbreak portion 122 away from the air inlet end 110a. The windbreak rib 123 is folded outward along the circumference of the fan body 110. The windbreak rib 123 can be used to overlap the air duct 210 of the outer casing.

[0124] In this embodiment, the cooking appliance 10 has a fan duct 210 on its outer casing. The fan duct 210 corresponds to the air inlet 200a on the outer casing. At least a portion of the fan body 110 is located inside the fan duct 210, and the air inlet end 110a of the fan body 110 corresponds to the air inlet 200a on the outer casing. By providing a wind-blocking rib 123, airflow can be blocked from flowing out of the protective cover 120 through the gap between the second wind-blocking part 122 and the fan duct 210, reducing the loss of airflow to the first heating element 300 and the second heating element 400, so that more airflow can act on the first heating element 300 and the second heating element 400.

[0125] In some examples, the second windbreak 122 can be a semi-circular enclosure structure. The outer wall of the second windbreak 122 can be located inside the air duct 210. The windbreak rib 123 can be folded outward and placed on the upper surface of the air duct 210. Along the radial direction of the fan body 110, the windbreak rib 123 can block the gap between the second windbreak 122 and the air duct 210.

[0126] See also some of the possible implementation methods. Figure 10 and Figure 11 As shown, along the circumference of the fan body 110, the diameter M1 of the outer contour of the fan body 110 is less than or equal to the diameter M2 of the outer contour of the air guide 1213, and the diameter M2 of the outer contour of the air guide 1213 is less than or equal to the diameter M3 of the inner contour of the windproof rib 123.

[0127] In this embodiment, by setting the diameter M1 of the outer contour of the fan body 110 to be less than or equal to the diameter M2 of the outer contour of the air guide 1213, it is possible to prevent the fan body 110 from colliding with the air guide 1213 of the cover during the assembly process of the fan body 110 and the cover. This reduces the possibility that the air guide 1213 may obstruct the movement of the fan body 110 during the rotation of the fan body 110, thus causing the fan body 110 to malfunction.

[0128] By setting the diameter M2 of the outer contour of the air guide 1213 to be less than or equal to the diameter M3 of the inner contour of the windbreak rib 123, the windbreak rib 123 can be placed on the air duct 210 to block the airflow and reduce the possibility of airflow flowing out through the gap between the second windbreak 122 and the air duct 210.

[0129] In some examples, the difference between the diameter M3 of the inner contour of the windbreak rib 123 and the diameter M2 of the outer contour of the air guide 1213 can be at least 2 mm.

[0130] See also some of the possible implementation methods. Figure 7 As shown, along the axial direction X of the fan body 110, the distance H3 between the first windshield 121 and the fan body 110 is greater than or equal to 2 mm and less than or equal to 20 mm.

[0131] In this embodiment, by setting the distance H3 between the first windbreak 121 and the fan body 110 to be greater than or equal to 2mm, space can be provided for airflow, reducing the possibility that if the distance H3 between the first windbreak 121 and the fan body 110 is too small, airflow will be difficult to pass through or abnormal noise will occur. By setting the distance H3 between the first windbreak 121 and the fan body 110 to be less than or equal to 20mm, the cover 120 will not occupy the space above the fan body 110, thereby reducing the possibility of affecting the overall size of the cooking appliance 10.

[0132] In some feasible ways, along the axial direction X of the fan body 110, the distance H4 between the shroud 120 and the panel 600 is greater than or equal to 0.5 mm and less than or equal to 2 mm.

[0133] In this embodiment, after the protective cover 120 and the fan body 110 are assembled to form the fan assembly 100 and fixed to the outer casing, the panel 600 can cover the opening of the outer casing. By setting the distance H4 between the protective cover 120 and the panel 600 to be greater than or equal to 0.5 mm, the assembly requirements of the cooking appliance 10 can be met, the possibility of collision or interference between the top of the panel 600 and the protective cover 120 can be avoided, and the possibility of the panel 600 breaking during transportation due to excessive fit between the panel 600 and the protective cover 120 can also be reduced.

[0134] By setting the distance H4 between the protective cover 120 and the panel 600 to be less than or equal to 2mm, the thickness of the cooking appliance 10 can be kept from being too large while meeting the assembly requirements of the cooking appliance 10, which is conducive to making the cooking appliance 10 thinner and lighter.

[0135] See in some examples Figure 9 As shown, along the axial direction X of the fan body 110, the height H5 of the shroud 120 can be greater than or equal to 10 mm and less than or equal to 50 mm.

[0136] This application also provides a cooking utensil 10, see [link]. Figures 1 to 3 As shown, the cooking appliance 10 may include a housing 200, a first heating element 300, a second heating element 400, and a fan assembly 100.

[0137] The bottom of the housing 200 is provided with an air inlet 200a. Both the first heating element 300 and the second heating element 400 can be disposed within the housing 200. The air inlet end 110a of the fan assembly 100 corresponds to the air inlet 200a. The first air outlet 120a of the protective cover 120 corresponds to the first heating element 300. The second air outlet 120b of the protective cover 120 corresponds to the second heating element 400.

[0138] In this embodiment, by setting the first air outlet 120a of the protective cover 120 to correspond to the first heating element 300 and the second air outlet 120b to correspond to the second heating element 400, the airflow generated by the fan body 110 can act more on the first heating element 300 and the second heating element 400, so as to improve the heat dissipation efficiency of the first heating element 300 and the second heating element 400 when the cooking appliance 10 is continuously outputting high power, so that the cooking appliance 10 can operate stably.

[0139] It should be noted that the numerical values ​​and ranges involved in this application are approximate values. Due to the influence of the manufacturing process, there may be a certain range of errors, which can be considered negligible by those skilled in the art.

[0140] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or 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 the embodiments of this application according to the specific circumstances.

[0141] In the description of this application, it should be understood that the terms “center,” “length,” “width,” “thickness,” “top,” “bottom,” “up,” “down,” “left,” “right,” “front,” “back,” “vertical,” “horizontal,” “inner,” “outer,” “axial X,” and “circumferential” used to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the indicated position or component must have a specific orientation, a specific structure, or operation, and therefore should not be construed as a limitation of this utility model.

[0142] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0143] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0144] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0145] The term "multiple" in this article refers to two or more. The term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Furthermore, the character " / " in this article generally indicates an "or" relationship between the preceding and following related objects; in formulas, the character " / " indicates a "division" relationship between the preceding and following related objects.

[0146] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0147] It is understood that, in the embodiments of this application, the order of the above-mentioned process numbers does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

Claims

1. A fan assembly (100) characterized by, The fan body (110) has an air inlet end (110a) along an axial direction (X) of the fan body (110). The shroud (120) covers the fan body (110) and includes a first wind blocking portion (121) and a second wind blocking portion (122). The first wind blocking portion (121) is arranged on a side of the fan body (110) away from the air inlet end (110a) along the axial direction (X) of the fan body (110). The second wind blocking portion (122) surrounds a part of the outer periphery of the fan body (110). The first wind blocking portion (121) and the second wind blocking portion (122) surround a first air outlet (120a) and a second air outlet (120b). The first air outlet (120a) is used to correspond to the first heat generating element (300), and the second air outlet (120b) is used to correspond to the second heat generating element (400). The first wind blocking portion (121) is provided with a first extension (1211) at the first air outlet (120a) and faces the first heat generating element (300). At least part of the first extension (1211) is located on a side of the first heat generating element (300) away from the air inlet end (110a).

2. The fan assembly (100) of claim 1, wherein, The first extension (1211) has an overlapping area with the first heat generating element (300) along the axial direction (X) of the fan body (110). The first extension (1211) has a spacing with the first heat generating element (300) along the axial direction (X) of the fan body (110). The spacing is greater than 0 mm and less than or equal to 10 mm.

3. The fan assembly (100) of claim 2, wherein, The first wind blocking portion (121) is provided with a second extension (1212) and an inclined air guide rib (1214) at the second air outlet (120b). The inclined air guide rib (1214) is inclined relative to the second extension (1212) and faces the second heat generating element (400).

4. The fan assembly (100) of claim 1, wherein, The angle between the inclined air guide rib (1214) and the second extension (1212) is obtuse.

5. The fan assembly (100) of claim 4, wherein, The distance between the free end of the inclined air guide rib (1214) and the second extension (1212) along the axial direction (X) of the fan body (110) is greater than or equal to 2 mm and less than or equal to 10 mm. The first wind blocking portion (121) is provided with an air guide portion (1213) connected to the second wind blocking portion (122). The air guide portion (1213) extends in a circular arc shape.

6. The fan assembly (100) according to any one of claims 1 to 5, characterized in that The shroud (120) further includes a wind blocking surrounding rib (123) arranged on a side of the second wind blocking portion (122) away from the air inlet end (110a). The wind blocking surrounding rib (123) is folded outward along the circumferential direction of the fan body (110). The wind blocking surrounding rib (123) is used to lap on the air duct (210) of the housing.

7. The fan assembly (100) of claim 6, wherein, ​ 8. The fan assembly (100) of claim 7, wherein, Along the circumferential direction of the fan body (110), the diameter of the outer contour of the fan body (110) is less than or equal to the diameter of the outer contour of the air guide portion (1213), and the diameter of the outer contour of the air guide portion (1213) is less than or equal to the diameter of the inner contour of the air blocking rim (123).

9. The fan assembly (100) of claim 1, wherein, Along the axial direction (X) of the fan body (110), the distance between the first air blocking portion (121) and the fan body (110) is greater than or equal to 2mm and less than or equal to 20mm; and / or, Along the axial direction (X) of the fan body (110), the distance between the shroud (120) and the panel (600) is greater than or equal to 0.5mm and less than or equal to 2mm.

10. A cooking appliance (10) characterized in that, Comprising: a housing (200), the bottom of the housing (200) is provided with an air inlet (200a); a first heating element (300), the first heating element (300) is arranged in the housing (200); a second heating element (400), the second heating element (400) is arranged in the housing (200); The fan assembly (100) according to any one of claims 1 to 9, the air inlet end (110a) of the fan assembly (100) corresponds to the air inlet (200a), the first air outlet (120a) of the shroud (120) corresponds to the first heating element (300), and the second air outlet (120b) of the shroud (120) corresponds to the second heating element (400).

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