Air outlet blade and cooking equipment

Abstract

The utility model discloses an air outlet blade and cooking equipment. The air outlet blade comprises a blade body and a plurality of fan blades. The multiple fan blades are arranged on the periphery of the blade body at intervals. The fan blades comprise first blades and second blades which are arranged at intervals, the first blades and the second blades are symmetrically arranged, and the symmetry axis of the first blades and the second blades penetrates through the rotation axis of the air outlet blade. In this way, the air outlet uniformity of the air outlet blades can be improved.

Description

Technical Field

[0001] This application relates to the field of kitchen appliance technology, and in particular to air outlet blades and cooking equipment. Background Technology

[0002] In daily life, people frequently use cooking appliances such as steam ovens, ovens, or microwave ovens to cook food. These appliances require a hot air assembly to blow hot air evenly onto the food. However, in some technologies, uneven airflow within the cooking cavity can occur due to structural obstructions or blade rotation, affecting the cooking process. Utility Model Content

[0003] The embodiments of this application provide air outlet blades and cooking equipment, which can improve the uniformity of air outlet blades.

[0004] In a first aspect, embodiments of this application provide an air outlet blade. The air outlet blade includes a blade body and a plurality of fan blades. The plurality of fan blades are spaced apart on the outer periphery of the blade body. Each fan blade includes a first blade and a second blade spaced apart, the first blade and the second blade being symmetrically arranged, and the axis of symmetry of the first blade and the second blade passing through the axis of rotation of the air outlet blade.

[0005] Optionally, there is an air outlet space between adjacent fan blades, and the air outlet space is arranged to run through the direction of the rotation axis.

[0006] Optionally, the fan blade further includes a connecting portion that connects the first blade and the second blade, the connecting portion connecting the first blade and the second blade at the ends of the blade body in the direction of the rotation axis.

[0007] Optionally, the blade body is recessed and provided with a process groove, the bottom wall of the process groove is connected to the connecting part, and the space between the process groove and the first blade and the second blade is connected; in the direction of the rotation axis, the opening of the process groove, the first blade and the second blade are located on the same side of the connecting part.

[0008] Optionally, the angle between the tangent of the outer periphery of the exhaust blade at the end of the first blade away from the axis of rotation and at least a portion of the first blade is greater than 90 degrees.

[0009] The angle between the outer periphery of the exhaust blade at the end of the second blade away from the axis of rotation and at least part of the second blade is less than 90 degrees.

[0010] Optionally, the interval between the portion of the first blade away from the rotation axis and the portion of the second blade away from the rotation axis is greater than the interval between the portion of the first blade close to the rotation axis and the portion of the second blade close to the rotation axis.

[0011] Optionally, the interval between the portion of the first blade away from the rotation axis and the portion of the second blade away from the rotation axis is smaller than the interval between the portion of the first blade close to the rotation axis and the portion of the second blade close to the rotation axis.

[0012] Optionally, on the outer periphery of the air outlet blade, the ratio of the arc length occupied by the interval between the first blade and the second blade to the outer periphery of the air outlet blade is less than 0.02.

[0013] Optionally, on a plane perpendicular to the axis of rotation, the included angle between the first blade and the second blade is set to be less than 10°.

[0014] Secondly, embodiments of this application provide a cooking device. The cooking device includes a main body and the aforementioned air outlet shroud, the air outlet shroud being installed on the main body.

[0015] The beneficial effect of this application is that, unlike the prior art, by setting the first and second blades symmetrically, the air outlet blades can exert the same disturbance effect on the airflow during forward and reverse rotation, so that the air volume generated by the forward and reverse rotation of the air outlet blades tends to be consistent. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the cooking equipment of this application;

[0017] Figure 2 yes Figure 1 A schematic diagram of the exploded structure of the cooking equipment shown.

[0018] Figure 3 This is a schematic diagram of the structure of an embodiment of the air outlet blade of this application;

[0019] Figure 4 yes Figure 3 The diagram shows the structure of the other side of the air outlet blade;

[0020] Figure 5 yes Figure 3 The image shows a front view of the air outlet blades. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] Combination Figures 1 to 2This application provides a cooking device 1. The cooking device 1 provided in this application embodiment can be a microwave oven, oven, or steam oven. The cooking device 1 provided in this application embodiment can also be an integrated machine combining any two of the three functions of microwaving, steaming, or baking. The cooking device 1 provided in this application embodiment can also be a microwave-steam-bake integrated machine. The cooking device 1 includes a main body 10, an air outlet assembly 20, and an air outlet hood 30.

[0023] Specifically, the main body 10 can install and support various components. Depending on the type of cooking device 1, the main body 10 can support microwave components, steam components, or heating components, etc. The main body 10 has a cooking cavity 101. The cooking cavity 101 can be used to place food and can contain microwaves, steam, or hot air to heat the food. Optionally, the two ends of the main body 10 have openings that communicate with the cooking cavity 101 respectively. One opening on one side of the main body 10 can be used to install a door (not shown), which can open or close the opening, allowing a user to put or take food into or out of the cooking cavity 101 through the opening. The opening on the other side of the main body 10 can be used to install an exhaust hood 30 and an exhaust assembly 20. The exhaust hood 30 and the exhaust assembly 20 can cooperate to generate airflow within the cooking cavity 101 to achieve uniform heating of the food.

[0024] In some embodiments, a recessed portion 11 is provided on one side of the main body 10 facing the cooking cavity 101. The recessed portion 11 can accommodate components such as microwave components, steam components, or heating components. The recessed portion 11 allows the size of components such as microwave components, steam components, or heating components to be partially accommodated in the cooking cavity 101, thereby reducing the overall space occupied by the cooking device 1.

[0025] The air outlet assembly 20 is installed on the main body 10 of the equipment. The air outlet assembly 20 can discharge air into the cooking cavity 101 through the air outlet cover 30. The air outlet assembly includes a fixed cover, a bracket, a drive device, and air outlet blades 24. The drive device can be fixed to the fixed cover through the bracket. The air outlet blades 24 are driven and connected to the drive device. The air outlet blades 24 can generate airflow by rotating. The airflow generated by the air outlet blades 24 can be guided into the cooking cavity 101 through the air outlet cover 30.

[0026] An air hood 30 is installed on the main body 10 of the device and communicates with the cooking cavity 101. The air hood 30 is installed at one end of the main body 10 with an opening. The air hood 30 is provided with an air outlet, through which the airflow generated by the air outlet assembly 20 can enter the cooking cavity 101. The air hood 30 can rectify and guide the airflow generated by the air outlet assembly 20, and then guide the airflow into the cooking cavity 101. The air hood 30 can also form a return air inlet corresponding to the air outlet assembly 20, through which the airflow in the cooking cavity 101 can flow back to the air outlet blades 24. In this way, airflow circulation can be formed in the cooking cavity 101, thereby promoting the flow of heat in the cooking cavity 101 and improving the uniformity of heating of food inside the cooking cavity 101.

[0027] In some embodiments, combined with Figure 2 The main body 10, air outlet hood 30, and air outlet assembly 20 are separately configured. The main body 10 can be used to install the air outlet hood 30 and the air outlet assembly 20. The air outlet assembly 20 can drive airflow convection through the rotation of the air outlet blades 24. The air outlet hood 30 can integrate and guide the airflow, thereby inputting it into the cooking cavity 101 in a desired manner. By configuring the main body 10, air outlet hood 30, and air outlet assembly 20 separately, different air outlet hoods 30 and air outlet assemblies 20 can be selected and fitted during the assembly process. By selecting different air outlet hoods 30 and air outlet assemblies 20, cooking equipment 1 with different configurations can be assembled.

[0028] In some embodiments, the cooking device 1 further includes an air outlet blade 24 corresponding to the return air vent of the air outlet 30, and the air outlet blade 24 is configured to switch its rotation direction. The air outlet blade 24 generates airflow in different directions when rotating clockwise and counterclockwise, thereby affecting the state of the airflow introduced into the cooking cavity 101. By setting the rotation direction of the air outlet blade 24 to be changeable, the airflow state within the cooking cavity 101 can be adjusted according to specific circumstances or different structures at the air outlet (described later) to improve the uniformity of the airflow.

[0029] During their research, the inventors discovered that the asymmetrical structural design of the air outlet blades in related technologies resulted in different air volumes even when the blades rotated at the same speed in both forward and reverse directions, leading to uneven airflow. To address this issue, this application provides the following embodiments.

[0030] Combination Figures 3 to 5This application provides an air outlet blade 24. The air outlet blade 24 includes a blade body 241 and a plurality of fan blades 242. The plurality of fan blades 242 are spaced apart on the outer periphery of the blade body 241. The fan blades 242 include first blades 2421 and second blades 2422 spaced apart, the first blades 2421 and the second blades 2422 are symmetrically arranged, and the axis of symmetry of the first blades 2421 and the second blades 2422 passes through the rotation axis of the air outlet blade 24. By setting the first blades 2421 and the second blades 2422 symmetrically, the air outlet blade 24 can exert the same disturbance effect on the airflow during forward and reverse rotation, so that the air volume generated by the forward and reverse rotation of the air outlet blade 24 tends to be consistent.

[0031] In some embodiments, an air outlet space is spaced between adjacent fan blades 242, and the air outlet space is arranged through the axis of rotation. In this way, the overall weight of the air outlet blades 24 can be reduced, and the through arrangement can also reduce the resistance of the air outlet blades 24 during rotation, thereby reducing the torque requirements of the motor.

[0032] In some embodiments, the fan blade 242 further includes a connecting portion 2423 connecting the first blade 2421 and the second blade 2422. The connecting portion 2423 connects the ends of the first blade 2421 and the second blade 2422 near the blade body 241 in the direction of the rotation axis. The connecting portion 2423 connects the first blade 2421 and the second blade 2422. By providing the connecting portion 2423 to connect the ends of the first blade 2421 and the second blade 2422 in the direction of the rotation axis, the first blade 2421 and the second blade 2422 can be formed by simple sheet metal bending, reducing the manufacturing difficulty of the air outlet blade 24.

[0033] In some embodiments, the blade body 241 is recessed with a process groove 2411, the bottom wall of which is connected to the connecting portion 2423, and the process groove 2411 communicates with the space between the first blade 2421 and the second blade 2422. In the direction of the rotation axis, the opening of the process groove 2411, the first blade 2421, and the second blade 2422 are located on the same side of the connecting portion 2423. Specifically, on one side of the blade body 241 in the direction of the rotation axis, the process groove 2411 is recessed, while on the other side, the back of the process groove 2411 is protruding. The process groove 2411 strengthens the structure of the blade body 241. Furthermore, by connecting the bottom wall of the process groove 2411 to the connecting part 2423 and connecting the space between the process groove 2411 and the first blade 2421 and the second blade 2422, the structural strength of the fan blade 242 and the blade body 241 can be increased. On the other hand, the process groove 2411 and the connecting part 2423 can be formed in one piece using sheet metal processing, and then the first blade 2421 and the second blade 2422 can be formed by sheet metal bending. This method helps reduce the forming difficulty of the air outlet blade 24.

[0034] There are different types of exhaust blades 24, such as forward blades and backward blades. Forward blades and backward blades have different effects on airflow disturbance. The first blade 2421 and the second blade 2422 can be rotated using forward blades or backward blades, depending on the specific needs. No specific limitation is made here.

[0035] In some embodiments, the angle between the tangential direction of the outer periphery of the outlet blade 24 at the end of the first blade 2421 away from the axis of rotation and at least a portion of the first blade 2421 is greater than 90 degrees. The angle between the tangential direction of the outer periphery of the outlet blade 24 at the end of the second blade 2422 away from the axis of rotation and at least a portion of the second blade 2422 is less than 90 degrees. (Reference) Figure 5 For example, the diagram does not specifically illustrate the angle between the first blade 2421 and the second blade 2422. For instance, the angle between the first blade 2421 on the right and the tangent is greater than 90 degrees, while the angle between the second blade 2422 on the left and the tangent is less than 90 degrees. With this configuration, during clockwise rotation, the first blade 2421, which primarily disturbs the airflow, is the forward-curving blade. During counter-clockwise rotation, the second blade 2422, which primarily disturbs the airflow, is the forward-curving blade. This method ensures that the disturbance effect of the outlet blade 24 on the airflow is consistent during both clockwise and counter-clockwise rotations, thereby improving the consistency of the airflow volume in both directions. It can be understood that... Figure 5For reference, in some embodiments, the first blade 2421 may also be the left-hand blade, and the second blade 2422 may also be the right-hand blade. In this case, when the air outlet blade 24 rotates clockwise, the second blade 2422 is a rearward blade, and when the air outlet blade 24 rotates counterclockwise, the first blade 2421 is a rearward blade.

[0036] In other embodiments, the angle between the tangential direction of the outer periphery of the outlet blade 24 at the end of the first blade 2421 away from the axis of rotation and at least a portion of the first blade 2421 is less than 90 degrees. The angle between the tangential direction of the outer periphery of the outlet blade 24 at the end of the second blade 2422 away from the axis of rotation and at least a portion of the second blade 2422 is greater than 90 degrees. (See reference...) Figure 5 For example, the diagram does not specifically illustrate the angle between the first blade 2421 and the second blade 2422. For instance, the angle between the first blade 2421 on the right and the tangent is less than 90 degrees, while the angle between the second blade 2422 on the left and the tangent is greater than 90 degrees. With this configuration, during clockwise rotation, the first blade 2421, which primarily disturbs the airflow, is the backward-curving blade. During counter-clockwise rotation, the second blade 2422, which primarily disturbs the airflow, is the backward-curving blade. This method ensures that the disturbance effect of the outlet blade 24 on the airflow is consistent during both clockwise and counter-clockwise rotations, thereby improving the consistency of airflow volume in both directions.

[0037] In some embodiments, the interval between the portion of the first blade 2421 away from the rotation axis and the portion of the second blade 2422 away from the rotation axis is greater than the interval between the portions of the first blade 2421 and the second blade 2422 near the rotation axis. In other words, the interval between the first blade 2421 and the second blade 2422 is wider at the outer edge and narrower at the inner edge. This configuration allows for the formation of symmetrical blades. With this arrangement, during clockwise rotation, the first blade 2421, which primarily disturbs the airflow, is a forward-curving blade. During counterclockwise rotation, the second blade 2422, which primarily disturbs the airflow, is also a forward-curving blade. This configuration ensures that the disturbance effect of the outlet blade 24 on the airflow is consistent during both clockwise and counterclockwise rotations, thereby improving the consistency of the airflow volume in both directions.

[0038] In some embodiments, the interval between the portion of the first blade 2421 away from the rotation axis and the portion of the second blade 2422 away from the rotation axis is smaller than the interval between the portions of the first blade 2421 and the second blade 2422 near the rotation axis. In other words, the interval between the first blade 2421 and the second blade 2422 is narrower at the outer edge and wider at the inner edge. During clockwise rotation, the first blade 2421, which plays a major role in disturbing the airflow, is a backward-curving blade. During counterclockwise rotation, the second blade 2422, which plays a major role in disturbing the airflow, is a backward-curving blade. In this way, the disturbance effect of the outlet blade 24 on the airflow during clockwise and counterclockwise rotation can be made more consistent, thereby improving the consistency of the airflow volume in both directions.

[0039] In some embodiments, the arc length occupied by the gap between the first blade 2421 and the second blade 2422 on the outer periphery of the air outlet blade 24 (e.g.) Figure 5 The ratio of L in the first blade 2421 to the outer circumference of the outlet blade 24 is less than 0.02. For example, the ratio could be 0.015, 0.01, or 0.05. By limiting the arc length occupied by the gap between the first blade 2421 and the second blade 2422 to a small size, the first blade 2421 and the second blade 2422 can be rotated so that one side of the blade has the main effect on airflow disturbance. Thus, the demand for air disturbance can be controlled by controlling the type of blade on one side. For example, during clockwise rotation, the first blade 2421 is a forward blade, and the second blade 2422 is a backward blade. Thus, when the arc length occupied by the gap between the first blade 2421 and the second blade 2422 is small, and the first blade 2421 plays a major role as a forward blade, the second blade 2422 has a limited effect as a backward blade. If the arc length of the first blade 2421 and the second blade 2422 occupies too large a proportion of the circumference, there will be disturbance to the air by both the forward blade and the backward blade, making airflow control more difficult.

[0040] In some embodiments, the first blade 2421 and the second blade 2422 are set at an angle on a plane perpendicular to the axis of rotation, and the angle between the first blade 2421 and the second blade 2422 is less than 10°. For example, 7°, 5.9° or 3°.

[0041] The above are merely embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An air outlet blade, characterized by, Comprising: a blade body; a plurality of vanes, the vanes being spaced apart on the outer periphery of the blade body; the vanes comprising first and second vanes spaced apart, the first and second vanes being symmetrically arranged, the symmetry axis of the first and second vanes passing through the rotation axis of the air outlet vane.

2. The air outlet vane according to claim 1, wherein: an air outlet space is spaced apart between adjacent vanes, the air outlet space being arranged through in the direction of the rotation axis.

3. The air outlet vane according to claim 1, wherein: the vanes further comprise a connecting portion connecting the first and second vanes, the connecting portion connecting the first and second vanes at the end portion of the vanes close to the blade body in the direction of the rotation axis.

4. The air outlet vane according to claim 3, wherein: the blade body is recessed to provide a process groove, the bottom wall of the process groove being connected to the connecting portion, the process groove being in communication with the space between the first and second vanes; in the direction of the rotation axis, the opening of the process groove, the first vane and the second vane are located on the same side of the connecting portion.

5. The air outlet vane according to claim 1, wherein: the tangent of the outer periphery of the air outlet vane at the end portion of the first vane away from the rotation axis forms an angle greater than 90 degrees with at least part of the first vane; the tangent of the outer periphery of the air outlet vane at the end portion of the second vane away from the rotation axis forms an angle less than 90 degrees with at least part of the second vane.

6. The air outlet vane according to claim 5, wherein: the spacing between the portion of the first vane away from the rotation axis and the portion of the second vane away from the rotation axis is greater than the spacing between the portion of the first vane close to the rotation axis and the portion of the second vane close to the rotation axis.

7. The air outlet vane according to claim 5, wherein: the spacing between the portion of the first vane away from the rotation axis and the portion of the second vane away from the rotation axis is less than the spacing between the portion of the first vane close to the rotation axis and the portion of the second vane close to the rotation axis.

8. The air outlet vane according to claim 1, wherein: on the outer periphery of the air outlet vane, the proportion of the arc length occupied by the spacing between the first vane and the second vane to the circumference of the outer periphery of the air outlet vane is less than 0.

02.

9. The air outlet vane according to claim 1, wherein: in a plane perpendicular to the rotation axis, the first vane and the second vane are arranged at an angle, the angle between the first vane and the second vane being less than 10°.

10. A cooking apparatus, characterized by, Comprising: a device body and an air outlet vane as claimed in any one of claims 1-9, the air outlet vane being mounted to the device body.

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