Fan assembly and cooking equipment

Abstract

The utility model relates to a fan assembly and cooking equipment. The fan assembly comprises a rotating plate, extending fan blades and fixed fan blades. The rotating plate can rotate around the axis of the rotating plate, and the rotating plate comprises a connecting end face. The fixed fan blades are connected to the connecting end face, all the fixed fan blades are distributed in the circumferential direction of the rotating plate, and each fixed fan blade is arranged in the radial direction of the rotating plate and is perpendicular to the connecting end face; the extending fan blades can be rotationally connected to the fixed fan blades around the rotating axis perpendicular to the connecting end face, and the extending fan blades are connected to the ends, away from the axis of the rotating plate, of the fixed fan blades. According to the scheme, the included angle between the extending fan blade and the fixed fan blade is variable, so that the wind field stirred by the extending fan blade and the fixed fan blade is changed, the angle between the extending fan blade and the fixed fan blade is changed to any position within a certain range, the wind field change is more variable, more flexible hot air circulation is achieved, and the hot air circulation efficiency is improved. Therefore, complex and changeable baking requirements in the cooking process are met.

Description

Technical Field

[0001] This application relates to the field of electrical technology, and in particular to fan components and cooking equipment. Background Technology

[0002] As people's living standards improve, cooking appliances, such as ovens, have become increasingly popular due to their convenience. Cooking appliances typically include a fan assembly to evenly distribute the heat (or cold air) generated by the heating (or cooling) device. However, existing ovens usually have fixed air ducts, making it difficult to adjust the airflow and airflow according to specific cooking needs.

[0003] To address this, the angle and shape of the baffle at the air outlet can be adjusted to control changes in the air duct. However, due to the inherent complexity of the air duct, adjusting the baffle only solves the problem of an overly simplistic air duct design. Its impact on airflow and air field is relatively small, and it does not completely solve the need for air duct adjustment to adapt to complex and varied usage requirements. Furthermore, the self-adjustment of the baffle means adding an extra motor, which is a burden in terms of internal space and cost, reducing the occupancy rate of the cooking space and the production cost of the cooking equipment.

[0004] Therefore, existing technologies have the problem that the air ducts in cooking equipment are too simple and cannot adapt to complex and ever-changing usage needs. At the same time, the occupancy rate of cooking space and the production cost of cooking equipment must also be taken into account. Utility Model Content

[0005] Therefore, it is necessary to address the problem that the air ducts in existing cooking equipment are too simple and cannot adapt to complex and ever-changing usage needs, while taking into account the occupancy rate of cooking space and the production cost of cooking equipment, and to provide a fan component and cooking equipment.

[0006] A fan assembly includes a rotating plate, extended fan blades, and a plurality of fixed fan blades; the rotating plate is rotatably disposed about its own axis and includes a connecting end face; the fixed fan blades are connected to the connecting end face, and all the fixed fan blades are distributed circumferentially along the rotating plate, each fixed fan blade being arranged radially along the rotating plate and perpendicular to the connecting end face; the extended fan blades are rotatably connected to the fixed fan blades about a rotation axis perpendicular to the connecting end face, and the extended fan blades are connected to the end of the fixed fan blades away from the axis of the rotating plate.

[0007] In one embodiment, the connecting end face is provided with a sliding groove, the sliding groove is an arc structure, and the center of the sliding groove coincides with the rotation axis of the extended fan blade. The end face of the extended fan blade facing the connecting end face is provided with a slider, and the slider is slidably connected in the sliding groove.

[0008] In one embodiment, one end of the sliding groove is a starting end, the starting end and the corresponding fixed fan blade are in the same radial direction of the rotating plate, and the sliding groove extends from the starting end in a direction opposite to the rotation direction of the rotating plate.

[0009] In one embodiment, the fan assembly further includes an elastic element, one end of which is connected to the rotating plate and the other end of which is connected to the slider, and the elastic element has a tendency to move the slider and maintain the extended fan blades in the same direction as the fixed fan blades connected to them.

[0010] In one embodiment, the angle between the extended fan blade and the fixed fan blade extending toward the outer periphery of the rotating plate ranges from 0° to 45°.

[0011] In one embodiment, the extended fan blades and the rotating plate protrude at the same height from the connecting end face.

[0012] In one embodiment, the number of extended fan blades is no more than the number of fixed fan blades, and each fixed fan blade is connected to at most one extended fan blade.

[0013] In one embodiment, each of the fixed fan blades is connected to an extended fan blade.

[0014] In one embodiment, the fan assembly further includes a rotating pin perpendicular to the connecting end face and connected to the end of the fixed fan blade away from the axis of the rotating plate, the rotating pin being rotatably connected to at least one of the fixed fan blade and the extended fan blade.

[0015] A cooking appliance includes a fan assembly as described in any of the above embodiments.

[0016] The fan assembly provided in the above solution, by setting an extended fan blade rotatably connected to the fixed fan blade, allows the extended fan blade to rotate relative to the fixed fan blade due to wind resistance when the fixed fan blade rotates with the rotating plate. This makes the angle between the extended fan blade and the fixed fan blade in the direction extending towards the outer periphery of the rotating plate variable, thereby changing the wind field stirred by both the extended and fixed fan blades. The angle change between the extended and fixed fan blades can be any position within a certain range, resulting in more varied wind field changes, achieving more flexible hot air circulation, improving temperature uniformity, and adapting to the complex and ever-changing baking needs during cooking. This enhances the adaptability and efficiency of cooking equipment, meets the diverse needs of home users, and also helps to improve the market competitiveness of cooking equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a wind turbine assembly in one embodiment of this application. Figure 1 .

[0018] Figure 2 This is a schematic diagram of the structure of a wind turbine assembly in one embodiment of this application. Figure 2 .

[0019] Figure 3 for Figure 2 A schematic diagram of the extended fan blades in the medium-sized fan assembly rotating relative to the fixed fan blades.

[0020] Figure 4 for Figure 2 A schematic diagram of the extended fan blades in the medium-sized fan assembly, with the fan blades fixed and not rotating.

[0021] Figure 5 for Figure 2 A schematic diagram of extended and fixed fan blades in multiple states of a medium-sized wind turbine assembly.

[0022] Explanation of reference numerals in the attached figures:

[0023] 100. Fan assembly; 110. Rotating plate; 111. Connecting end face; 112. Sliding groove; 1121. Starting end; 120. Fixed fan blade; 130. Extending fan blade; 131. Slider; 140. Elastic element; 150. Rotating pin; 160. Driving element; 170. Drive shaft. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0025] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0026] Furthermore, where the terms "first" and "second" appear, these terms are 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 with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0030] One embodiment of this application provides a cooking device, including an inner pot with a cooking cavity and a door covering the inner pot. The door covers the inner pot to seal the cooking cavity for cooking food. A hot air chamber, separated from but connected to the cooking cavity, is provided on the back side of the inner pot. The communication between the hot air chamber and the cooking cavity allows for airflow exchange. The cooking device also includes a fan assembly 100 as described in any of the following embodiments. The fan assembly 100 is located within the hot air chamber to blow airflow from the hot air chamber towards the cooking cavity, thereby achieving airflow exchange between the hot air chamber and the cooking cavity.

[0031] See Figure 1 and Figure 2 , Figure 1 and Figure 2 A schematic diagram of the structure of the fan assembly 100 in one embodiment of this application is shown. The fan assembly 100 provided in one embodiment of this application can be applied to the above-mentioned cooking equipment, or to other fields, without limitation.

[0032] like Figure 1 and Figure 2 As shown, the fan assembly 100 includes a rotating plate 110, extended fan blades 130, and multiple fixed fan blades 120. The extended fan blades 130 and fixed fan blades 120 are used to drive airflow. The fan assembly 100 also includes a drive member 160 and a transmission shaft 170. One end of the transmission shaft 170 is connected to the drive member 160, and the other end is connected to the rotating plate 110, so that the drive member 160 drives the rotating plate 110 to rotate via the transmission shaft 170. Figure 1 and Figure 2 As shown, the drive shaft 170 is connected to the center of the rotating plate 110, and is coaxial with the axis of the rotating plate 110 itself, so that the rotating plate 110 can rotate around its own axis. Figure 2 As shown, the rotating plate 110 includes a connecting end face 111 on the end face opposite to the driving member 160, which is used to connect the fixed fan blade 120 and the extended fan blade 130.

[0033] Combination Figures 3 to 5 As shown, Figures 3 to 5 This diagram shows a partial structure of a fan assembly 100 according to an embodiment of the present application. The fixed fan blades 120 are connected to the connecting end face 111, and as shown... Figures 3 to 5 As shown, all fixed fan blades 120 are distributed circumferentially along the rotating plate 110. Each fixed fan blade 120 is radially arranged along the rotating plate 110 and is perpendicular to the connecting end face 111, so that when the rotating plate 110 rotates, each fixed fan blade 120 can drive the airflow.

[0034] like Figures 3 to 5As shown, the extended fan blade 130 is rotatably connected to the fixed fan blade 120 about a rotation axis perpendicular to the connecting end face 111. The extended fan blade 130 is connected to the end of the fixed fan blade 120 away from the axis of the rotating plate 110, so that when the fixed fan blade 120 rotates with the rotating plate 110, since the extended fan blade 130 is rotatably connected to the fixed fan blade 120, the extended fan blade 130 has a tendency to rotate relative to the fixed fan blade 120 due to wind resistance, so that the extended fan blade 130 and the fixed fan blade 120 are aligned towards the rotating plate 110. The angle between the directions of the outer periphery extension is variable, thereby changing the wind field stirred by the extension blade 130 and the fixed blade 120. The angle between the extension blade 130 and the fixed blade 120 can change at any position within a certain range, making the wind field more variable, achieving more flexible hot air circulation, improving temperature uniformity, and thus adapting to the complex and varied baking needs in the cooking process. This enhances the adaptability and efficiency of the cooking equipment, meets the diverse needs of home users, and also helps to improve the market competitiveness of the cooking equipment.

[0035] like Figures 3 to 5 As shown, in one embodiment, the fan assembly 100 further includes a rotating pin 150. The rotating pin 150 is perpendicular to the connecting end face 111 and connected to one end of the fixed fan blade 120 away from the axis of the rotating plate 110. The rotating pin 150 is rotatably connected to at least one of the fixed fan blade 120 and the extended fan blade 130. In this embodiment, the end of the rotating pin 150 near the connecting end face 111 is rotatably connected to one of the fixed fan blade 120 and the extended fan blade 130, and the end of the rotating pin 150 away from the connecting end face 111 is rotatably connected to the other of the fixed fan blade 120 and the extended fan blade 130, so that the rotating pin 150 is rotatably connected to both the fixed fan blade 120 and the extended fan blade 130. In other embodiments, the rotating pin 150 may be rotatably connected to only one of the fixed fan blade 120 and the extended fan blade 130.

[0036] like Figure 3 and Figure 4 As shown, in one embodiment, the extended fan blade 130 and the rotating plate 110 protrude from the connecting end face 111 at equal heights, so that when the rotating plate 110 rotates, the airflow near the axis of the rotating plate 110 and near the outer periphery of the rotating plate 110 is stable.

[0037] In one embodiment, the number of extended fan blades 130 is no more than the number of fixed fan blades 120, and each fixed fan blade 120 is connected to at most one extended fan blade 130. For example, the fixed fan blades 120 connected to the extended fan blades 130 and the fixed fan blades 120 not connected to the extended fan blades 130 are arranged alternately. At this time, the wind field formed when the rotating plate 110 rotates is also stable.

[0038] like Figures 1 to 5As shown, in this embodiment, each fixed fan blade 120 is connected to an extended fan blade 130 so that the force on each fixed fan blade 120 is equal. When the entire rotating plate 110 rotates, the air volume at all points of the fan assembly 100 is balanced and the wind field is stable.

[0039] like Figure 1 , Figures 3 to 5 As shown, in one embodiment, the connecting end face 111 is provided with a sliding groove 112. The sliding groove 112 has an arc structure, and the center of the sliding groove 112 coincides with the rotation axis of the extended fan blade 130. The extended fan blade 130 is provided with a slider 131 protruding from the end face facing the connecting end face 111. The slider 131 is slidably connected in the sliding groove 112 so as to guide and limit the rotation of the extended fan blade 130 through the sliding groove 112.

[0040] like Figure 3 As shown, in one embodiment, one end of the sliding groove 112 is a starting end 1121. The starting end 1121 and the corresponding fixed fan blade 120 are located in the same radial direction as the rotating plate 110, and the sliding groove 112 extends from the starting end 1121 in a direction opposite to the rotation direction of the rotating plate 110. Figures 3 to 5 As shown, this specification only uses the unidirectional rotation of the rotating plate 110 as an example. Figure 5 The angles shown in the illustrations are based solely on the clockwise rotation of the rotating plate 110, but this is not intended to be limiting. It is understood that when the rotating plate 110 rotates counter-clockwise, the extension direction of the sliding groove 112 is... Figure 5 The directions shown are opposite; it can also be understood that when the fan is a bidirectional fan with forward and reverse rotation, the sliding groove 112 extends from the starting end 1121 in both directions.

[0041] like Figure 1 As shown, in one embodiment, the fan assembly 100 further includes elastic elements 140, the number of which corresponds to the number of extended fan blades 130. In this embodiment, the elastic element 140 is illustrated as a spring, but this is not a limitation; the elastic element 140 can also be an elastic rope, etc.

[0042] like Figure 1 Each elastic element 140 has one end connected to the rotating plate 110 and the other end connected to the slider 131 of the corresponding extended fan blade 130. The elastic element 140 has the function of driving the slider 131 to move and maintaining it as described above. Figure 4 The extended fan blade 130 is arranged in the same direction as the fixed fan blade 120 connected to it, as shown. That is, the elastic member 140 tends to drive the slider 131 of the extended fan blade 130 to be held at the starting end 1121 of the sliding groove 112.

[0043] When the extended fan blade 130 is not subjected to force or experiences little airflow resistance due to the low rotational speed of the rotating plate 110, the extended fan blade 130... Figure 4 The extended fan blade 130 is arranged in the same direction as the fixed fan blade 120 connected to it. As the rotational speed of the rotating plate 110 increases, the airflow resistance received by the extended fan blade 130 increases until it overcomes the elastic force of the elastic member 140, and the extended fan blade 130 gradually moves in the same direction. Figure 5 As shown, the fan blades rotate relative to the fixed fan blade 120 until the extended fan blade 130 is as shown. Figure 3 The angle between the ground and the fixed fan blade 120 is the maximum rotation angle.

[0044] Meanwhile, since the elastic force of the elastic element 140 changes linearly with elastic deformation, when the rotational speed of the rotating plate 110 exceeds the rated force for the extension fan blade 130 to rotate relative to the fixed fan blade 120, but before the extension fan blade 130 completely overcomes the elastic force of the elastic element 140 and drives the elastic element 140 to reach its maximum deformation, simply maintaining the rotational speed of the rotating plate 110 is sufficient to keep the extension fan blade 130 stably maintained at its maximum deformation. Figure 4 The state shown and Figure 3 The change pattern of any intermediate state between the states shown is more stable, so the speed of the drive component 160 can be adjusted according to different usage conditions to achieve a variable air duct and flexibly change the air duct under different cooking conditions.

[0045] It should be noted that, in order to demonstrate that the extended fan blade 130 gradually rotates relative to the fixed fan blade 120 at a larger angle, Figure 5 The figure shows multiple position states of the extended fan blade 130, but in actual use, the included angle between each extended fan blade 130 connected to the same rotating plate 110 and the corresponding fixed fan blade 120 is close to or equal.

[0046] like Figure 5 As shown, in one embodiment, the angle α between the extended fan blade 130 and the fixed fan blade 120 extending toward the outer periphery of the rotating plate 110 ranges from 0° to 45°. This avoids the angle α between the extended fan blade 130 and the fixed fan blade 120 extending toward the outer periphery of the rotating plate 110 being too large, which would result in the fixed fan blade 120 being able to drive too little airflow and thus failing to achieve the effect of regulating the wind field of the duct.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A fan assembly comprising: The fan assembly comprises: a rotating plate rotatably arranged about its axis, and the rotating plate comprises a connecting end face; a plurality of fixed vanes connected to the connecting end face, and all the fixed vanes are distributed along the circumference of the rotating plate, and each fixed vane is arranged along the radial direction of the rotating plate and perpendicular to the connecting end face; and an extension vane rotatably connected to the fixed vane about a rotating axis perpendicular to the connecting end face, and the extension vane is connected to one end of the fixed vane away from the axis of the rotating plate.

2. The fan assembly of claim 1, wherein, The connecting end face is provided with a sliding groove, the sliding groove is in a circular arc structure, and the center of the sliding groove coincides with the rotating axis of the extension vane, and the end face of the extension vane facing the connecting end face is provided with a sliding block, and the sliding block is slidingly connected in the sliding groove.

3. The fan assembly of claim 2, wherein, One end of the sliding groove is a starting end, the starting end and the corresponding fixed vane are in the same radial direction of the rotating plate, and the sliding groove extends from the starting end in the direction opposite to the rotating direction of the rotating plate.

4. The fan assembly of claim 2, wherein, The fan assembly further comprises a resilient member, one end of the resilient member is connected to the rotating plate, the other end is connected to the sliding block, and the resilient member has a tendency to move and keep the sliding block in the same direction as the fixed vane connected to the extension vane.

5. The fan assembly of claim 1 or 3, wherein, The included angle between the extension vane and the fixed vane in the direction extending towards the outer periphery of the rotating plate ranges from 0° to 45°.

6. The fan assembly of claim 1, wherein, The height of the extension vane and the rotating plate protruding from the connecting end face is equal.

7. The fan assembly of claim 1, wherein, The number of the extension vanes is not more than the number of the fixed vanes, and each fixed vane is connected to at most one extension vane.

8. The fan assembly of claim 7, wherein, Each fixed vane is connected to one extension vane.

9. The fan assembly of claim 1, wherein, The fan assembly further comprises a rotating pin, the rotating pin is perpendicular to the connecting end face and connected to one end of the fixed vane away from the axis of the rotating plate, and the rotating pin is rotatably connected to at least one of the fixed vane and the extension vane.

10. A cooking apparatus, characterized by, The fan assembly comprises any one of claims 1-9.

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