Fan device and steaming and baking apparatus

Abstract

The utility model relates to a fan device and steam baking equipment, fan device, including drive motor, have output shaft, blade group, including along the axial interval arrangement of output shaft's first blade and second blade, first blade is fixed in output shaft, second blade rotatably is located in output shaft, the back of second blade is equipped with resistance part, blocking component, including mounting seat and fender, mounting seat has the assembly slot, fender is located in the assembly slot in the telescopic, fender has the contraction state and the elongation state, in the contraction state, fender is located in the assembly slot, in the elongation state, fender projects the assembly slot and with resistance part abuts through the resistance part of second blade back and fender component's cooperation, make fender in the contraction state, output shaft can drive first blade rotation, when fender in the elongation state, output shaft can synchronously drive first blade and second blade carry out rotation.

Description

Technical Field

[0001] This utility model relates to the field of cooking equipment technology, and in particular to a fan device and a steaming and baking device. Background Technology

[0002] With the innovation of modern cooking technology, steam cooking equipment, represented by steam ovens, has become increasingly popular among health-conscious consumers due to its healthy cooking characteristics. Steam ovens, through their integrated design, organically combine steam cooking and baking modes, not only improving cooking efficiency but also significantly optimizing kitchen space utilization.

[0003] Currently, cooking appliances with steaming functions, such as steam ovens, are often equipped with dual fans to circulate heat inside the steam oven during the cooking process. However, the dual fans cannot be adjusted independently according to different usage scenarios, resulting in low heat circulation efficiency. Existing dual fan structures mostly use a fixed speed to operate together, which cannot meet the needs of differentiated use. Utility Model Content

[0004] In view of this, it is necessary to provide a fan device and a steam oven to address the above problems, so as to meet the fan air volume requirements in different scenarios.

[0005] This application provides a fan device, including a drive motor having an output shaft;

[0006] The blade assembly includes a first blade and a second blade spaced apart along the axial direction of the output shaft. The first blade is fixed to the output shaft, and the second blade is rotatably disposed on the output shaft. The back of the second blade is provided with a stop portion.

[0007] The blocking assembly includes a mounting base and a stop. The mounting base is fixed to the output shaft and has a mounting groove. The stop is telescopically disposed in the mounting groove. The stop has a retracted state and an extended state. In the retracted state, the stop is located in the mounting groove. In the extended state, the stop extends out of the mounting groove and abuts against the blocking part.

[0008] This configuration, through the cooperation of the abutment on the back of the second blade and the baffle assembly, ensures that when the baffle is in the retracted state, the abutment is disengaged from the baffle. When the output shaft rotates, it drives the first blade to rotate, while the second blade remains stationary, facilitating low-speed applications. When the baffle is in the extended state, the abutment is blocked by the baffle. Since the mounting base is fixed to the output shaft, the baffle rotates synchronously with the output shaft, driving the second blade to rotate. In this state, both the first and second blades can be driven to rotate simultaneously, suitable for scenarios requiring high airflow and improving the heat circulation efficiency of the steam oven.

[0009] In one embodiment, the blocking assembly further includes an elastic element, one end of which abuts against the mounting base and the other end against the stop, for switching between a contracted state and an extended state under the action of centrifugal force when the output shaft rotates.

[0010] With this configuration, the elastic element automatically retracts to the mounting base after the output shaft speed decreases to a certain extent, making the method simple and reliable.

[0011] In one embodiment, the stop extends or retracts along the tangential direction of the output shaft.

[0012] This configuration, compared to other configurations, allows the stop to be subjected to greater force at a lower speed to overcome the force of the elastic element, thereby achieving the desired effect and reducing the speed of the drive motor.

[0013] In one embodiment, the stop includes a mounting cap and a connecting rod. The mounting cap is disposed at one end of the connecting rod, and an elastic element is sleeved on the connecting rod and located between the mounting cap and the mounting base.

[0014] With this configuration, the assembly cap can prevent the elastic element from coming off the connecting rod during assembly, and the elastic element being fitted onto the connecting rod can ensure the straightness and coaxiality of the elastic element during its extension and contraction. The assembly relationship is simple and reliable.

[0015] In one embodiment, the stop further includes a baffle plate, which is disposed on the periphery of the connecting rod and has a gap between it and the mounting groove. An elastic element is disposed between the mounting cap and the baffle plate, with one end abutting against the mounting cap and the other end abutting against the mounting base.

[0016] This design allows the baffle and the stop to fit together perfectly, which helps improve the stability of the baffle when it comes into contact with the stop.

[0017] In one embodiment, there are multiple blocking parts, which are arranged at circumferential intervals along the second blade.

[0018] This design shortens the contact time between the blocking part and the baffle, improves the timeliness of the second blade's working state switching, and reduces the impact force that a single blocking part needs to withstand.

[0019] In one embodiment, there are four abutments, which are evenly distributed along the circumferential distance of the second blade, and two stops, which extend and retract in opposite directions.

[0020] This design improves the stability of the contact between the abutment and the stop.

[0021] In one embodiment, along the axial direction of the output shaft, the second blade is disposed between the first blade and the motor.

[0022] This design helps dissipate heat from the motor, providing a stable and continuous heat dissipation channel to ensure stable operation and extend the motor's lifespan. The first blade provides a more orderly fluid environment for the second blade, allowing for direct motor inspection and maintenance during later maintenance, thus reducing maintenance costs.

[0023] In one embodiment, the outer peripheral wall of the mounting base is arc-shaped.

[0024] This configuration allows the working medium to flow smoothly around the fan, reducing flow separation and eddy current generation, lowering flow resistance, reducing noise generated by the working medium, reducing energy loss during fan operation, and improving fan operating efficiency.

[0025] This application also provides steaming and baking equipment, including: a fan unit.

[0026] With this configuration, when the steam oven needs to operate at low power, the baffle is in a retracted state, and the motor drives the first blade to rotate, which is sufficient. When the steam oven needs to operate at high power, the baffle is in an extended state, and the motor drives the first blade and the second blade to rotate together. Furthermore, by adjusting the angle between the abutting part of the second blade and the baffle, the required operating conditions can be provided according to the cooking conditions of the steam oven. Attached Figure Description

[0027] Figure 1 This is a partial structural schematic diagram of the fan device of this utility model;

[0028] Figure 2 For this Figure 1 A partial structural diagram from another perspective;

[0029] Figure 3 This is a partial structural diagram of the blocking component in this utility model;

[0030] Figure 4 This is a schematic diagram of the blocking component.

[0031] Figure 5 This is a schematic diagram of the structure of the second blade and 4.

[0032] Figure label:

[0033] 100. Fan assembly; 10. Drive motor; 11. Output shaft; 20. Blade assembly; 21. First blade; 22. Second blade; 221. Stopping part; 30. Blocking assembly; 31. Mounting base; 311. Assembly slot; 32. Stop; 321. Assembly cap; 322. Connecting rod; 323. Baffle; 33. Elastic element. Detailed Implementation

[0034] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model 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 utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0035] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship 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 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 utility model.

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

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

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

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

[0040] With the innovation of modern cooking technology, steam cooking equipment, represented by steam ovens, has become increasingly popular among health-conscious consumers due to its healthy cooking characteristics. Steam ovens, through their integrated design, organically combine steam cooking and baking modes, not only improving cooking efficiency but also significantly optimizing kitchen space utilization.

[0041] Currently, cooking appliances with steaming functions, such as steam ovens, are often equipped with dual fans to circulate heat inside the steam oven during the cooking process. However, the dual fans cannot be adjusted independently according to different usage scenarios, resulting in low heat circulation efficiency. Existing dual fan structures mostly use a fixed speed to operate together, which cannot meet the needs of differentiated use.

[0042] Please see Figures 1 to 5 This application provides a fan device 100 and a steam oven, which facilitates autonomous fan adjustment in different scenarios. The fan device 100 includes a drive motor 10 with an output shaft 11; a blade assembly 20 including a first blade 21 and a second blade 22 spaced apart along the axial direction of the output shaft 11, the first blade 21 being fixed to the output shaft 11, the second blade 22 being rotatably disposed on the output shaft 11, and a stop portion 221 on the back of the second blade 22; and a blocking assembly 30 including a mounting base 31 and a stop member 32, the mounting base 31 being fixed to the output shaft 11 and having a mounting groove 311, the stop member 32 being retractably disposed in the mounting groove 311, and the stop member 32 having a retracted state and an extended state. In the retracted state, the stop member 32 is located within the mounting groove 311; in the extended state, the stop member 32 extends out of the mounting groove 311 and abuts against the stop portion 221.

[0043] The engagement between the first blade 21 and the second blade 22 of the fan device 100 is optimized. Through the engagement of the abutment 221 on the back of the second blade 22 with the baffle 32 assembly, when the baffle 32 is in the retracted state, the abutment 221 is disengaged from the baffle 32. When the output shaft 11 rotates, the output shaft 11 can drive the first blade 21 to rotate, while the second blade 22 does not rotate, facilitating low-speed applications. When the baffle 32 is in the extended state, the abutment 221 is blocked by the baffle 32. Since the mounting base 31 is fixed to the output shaft 11, when the output shaft 11 rotates, the baffle 32 rotates synchronously, driving the second blade 22 to rotate. In this state, the first blade 21 and the second blade 22 can be driven to rotate synchronously, suitable for scenarios requiring high airflow and improving the heat circulation efficiency of the steam oven.

[0044] Please see Figure 1 and Figure 5 In one embodiment, the blocking assembly 30 further includes an elastic element 33, one end of which abuts against the mounting base 31, and the other end against the stop 32. This elastic element 33 is used to switch between a contracted and extended state under centrifugal force when the output shaft 11 rotates. Specifically, as the rotational speed of the output shaft 11 increases, the centrifugal force on the stop 32 also increases. When the centrifugal force on the stop 32 exceeds the compressive force of the elastic element 33, the stop 32 gradually expands. As the rotational speed of the output shaft 11 gradually increases, the stop 32 gradually extends until it abuts against the stop portion 221 on the second blade 22, thereby driving the second blade 22 to rotate. When the rotational speed of the output shaft 11 gradually decreases, it becomes less than the compressive force of the elastic element 33. The elastic element 33 drives the stop 32 to contract into the mounting base 31. During this process, the stop 32 disengages from the stop portion 221 of the second blade 22, and the second blade 22 stops rotating. By setting the elastic element 33, the stop 32 can be automatically retracted after the output shaft 11 speed drops to a certain extent, which is a simple and reliable method.

[0045] Optionally, in this embodiment, the contraction and expansion of the stop 32 are controlled by the contraction and expansion of the elastic member 33. In other embodiments of this application, the contraction and expansion of the stop 32 can also be controlled by electromagnetic, hydraulic or pneumatic means, as long as the stop 32 can be driven to return to the contracted state.

[0046] It is understood that in this embodiment, the elastic element 33 is a spring, and in other embodiments of this application, the spring may also be made of alloy, engineering plastic, or rubber.

[0047] Please see Figure 5In one embodiment, the stop 32 extends and retracts along the tangential direction of the output shaft 11. This maximizes the centrifugal force in the tangential direction. By extending and retracting the stop 32 along the tangential direction of the output shaft 11, compared to other configurations, the stop 32 can withstand greater force at lower speeds to overcome the force of the elastic element 33, thus achieving the desired effect and reducing the speed of the drive motor.

[0048] In other embodiments, the diameter of the first blade 21 is implemented to be smaller than the diameter of the second blade 22.

[0049] Please see Figure 4 and Figure 5 In one embodiment, the stop 32 includes an assembly cap 321 and a connecting rod 322. The assembly cap 321 is disposed at one end of the connecting rod 322, and the elastic member 33 is sleeved on the connecting rod 322 and located between the assembly cap 321 and the mounting base 31. The assembly cap 321 can prevent the elastic member 33 from coming out of the connecting rod 322 during assembly, reducing assembly difficulty; the elastic member 33 sleeved on the connecting rod 322 can ensure the straightness and coaxiality of the elastic member 33 during its extension and retraction, reduce wear and tear, and extend the service life of the stop 32.

[0050] It is understood that in this embodiment, the connection between the connecting rod 322 and the elastic member 33 is a clearance fit. In other embodiments of this application, the connection between the connecting rod 322 and the elastic member 33 can also be implemented as a sliding fit, as long as it facilitates the extension and retraction of the elastic member 33.

[0051] Please see Figure 3 and Figure 4 In one embodiment, the stop 32 further includes a stop plate 323, which is disposed on the periphery of the connecting rod 322 and spaced apart from the mounting groove 311. An elastic member 33 is disposed between the mounting cap 321 and the stop plate 323, with one end abutting against the mounting cap 321 and the other end abutting against the mounting base 31. This arrangement allows the stop plate 323 and the abutting portion 221 to achieve a surface-to-surface fit, which helps improve the stability of the stop plate 323 when it abuts against the abutting portion 221.

[0052] Optionally, in this embodiment, the baffle 323 is configured to have a guiding fit with the assembly groove 311. In other embodiments of this application, the baffle 323 and the assembly groove 311 may also be configured to have a friction-reducing fit.

[0053] Please see Figure 5In one embodiment, there are multiple abutment portions 221, which are arranged at intervals along the circumference of the second blade 22. This shortens the contact time between the abutment portion 221 and the baffle 323, improves the timeliness of the switching of the second blade 22's operating state, and reduces the impact force that a single abutment portion 221 needs to withstand. It also increases the service life of the second blade 22; even if one abutment portion 221 suffers fatigue damage, the baffle 323 can still contact the next abutment portion 221, improving the reliability of the fan unit 100 during operation.

[0054] Optionally, in this embodiment, the blocking part 221 is implemented as a plurality of parts. In other embodiments of this application, the blocking part 221 may also be implemented as a single part, as long as the blocking part 221 can stably and efficiently abut against the baffle 323.

[0055] It is understood that in this embodiment, the blocking part 221 is arranged at intervals along the circumference of the second blade 22. In other embodiments of this application, the blocking part 221 may also be arranged along the axial direction, radial direction, asymmetrical direction, and multi-dimensional surface direction of the second blade 22, as long as the blocking part 221 can stably and efficiently abut against the baffle 323.

[0056] Please see Figure 5 In one embodiment, there are four abutment parts 221, which are evenly distributed along the circumference of the second blade 22. There are two stoppers 32, which extend and retract in opposite directions. This improves the service life of the second blade 22. Even if one abutment part 221 fails due to fatigue, the stopper 323 can still abut against the next set of abutment parts 221, improving the stability of the contact between the abutment part 221 and the stopper 32. The opposite extension and retraction directions of the two stoppers 32 can cancel each other out radial forces, achieving internal force balance when the two stoppers 32 are working, ensuring stable output of the second blade 22, and improving the reliability of the fan unit 100 during operation.

[0057] Optionally, in this embodiment, four blocking parts 221 are implemented. In other embodiments of this application, more than four or less than four blocking parts 221 may also be implemented, as long as the blocking parts 221 can stably and efficiently abut against the baffle 323.

[0058] It is understood that in this embodiment, two stops 32 are implemented. In other embodiments of this application, more than two stops 32 may also be implemented, as long as the abutment 221 can stably and efficiently abut against the stop plate 323.

[0059] It is understood that in this embodiment, the number of stops 32 is less than the number of abutments 221. In other embodiments of this application, the number of stops 32 may also be greater than or equal to the number of abutments 221, as long as the abutments 221 can stably and efficiently abut against the baffle 323.

[0060] Please see Figure 1 and Figure 2 In one embodiment, along the axial direction of the output shaft 11, the second blade 22 is disposed between the first blade 21 and the motor. This helps dissipate heat from the motor, providing a stable and continuous heat dissipation channel, ensuring stable motor operation, and extending motor life. The first blade 21 provides a more orderly fluid environment for the operation of the second blade 22, allowing for direct motor repair during later maintenance, thus reducing maintenance costs.

[0061] It is understood that in this embodiment, the second blade 22 is disposed between the first blade 21 and the motor. In other embodiments of this application, the first blade 21 may also be disposed between the second blade 22 and the motor, as long as the abutment 221 on the second blade 22 can obtain drive from the motor through the output shaft 11.

[0062] Please see Figure 3 and Figure 4 In one embodiment, the outer peripheral wall of the mounting base 31 is arc-shaped. This allows the working medium to flow smoothly around it, reducing flow separation and eddy current generation, lowering flow resistance, reducing noise generated by the working medium, reducing energy loss during operation of the fan unit 100, and improving the operating efficiency of the fan unit 100.

[0063] It is understood that in this embodiment, the outer peripheral wall of the mounting base 31 is implemented as an arc shape. In other embodiments of this application, the outer peripheral wall of the mounting base 31 may also be implemented as an airfoil shape, as long as the fan device 100 can operate efficiently and stably.

[0064] Please see Figures 1 to 5 This application also provides a steam-grill device (not shown), including a fan device 100. When the steam-grill device (not shown) requires low-power operation, the baffle 32 is in a retracted state, and the motor drives the first blade 21 to rotate, which is sufficient. When the steam-grill device (not shown) requires high-power operation, the baffle 32 is in an extended state, and the motor drives the first blade 21 and the second blade 22 to rotate together. By adjusting the angle between the stop part 221 of the second blade 22 and the baffle 32, the required operating conditions can be provided according to the cooking conditions of the steam-grill device (not shown).

[0065] It is worth mentioning that the steam oven can also be controlled by a voice module. It is equipped with a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the steam oven to perform corresponding operations, thereby realizing intelligent control of the steam oven and improving the user experience.

[0066] 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.

[0067] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A fan device for use in cooking equipment, characterized in that, include The drive motor has an output shaft; The blade assembly includes a first blade and a second blade spaced apart along the axial direction of the output shaft. The first blade is fixed to the output shaft, and the second blade is rotatably disposed on the output shaft. The back of the second blade is provided with a stop portion. A blocking assembly includes a mounting base and a stop. The mounting base is fixed to the output shaft and has a mounting groove. The stop is telescopically disposed in the mounting groove. The stop has a retracted state and an extended state. In the retracted state, the stop is located in the mounting groove. In the extended state, the stop extends out of the mounting groove and abuts against the blocking part.

2. The fan device according to claim 1, characterized in that, The blocking assembly also includes an elastic element, one end of which abuts against the mounting base and the other end of which abuts against the stop, for switching between the contracted state and the extended state under the action of centrifugal force when the output shaft rotates.

3. The fan device according to claim 2, characterized in that, The stop member extends and retracts along the tangential direction of the output shaft.

4. The fan device according to claim 2, characterized in that, The stop includes an assembly cap and a connecting rod. The assembly cap is disposed at one end of the connecting rod, and the elastic element is sleeved on the connecting rod and located between the assembly cap and the mounting base.

5. The fan device according to claim 4, characterized in that, The stop also includes a stop plate, which is disposed on the periphery of the connecting rod and has a gap between it and the mounting groove. The elastic element is disposed between the mounting cap and the stop plate, with one end abutting against the mounting cap and the other end abutting against the mounting base.

6. The fan device according to claim 1, characterized in that, The blocking parts are multiple, and the multiple blocking parts are arranged at intervals along the circumference of the second blade.

7. The fan device according to claim 6, characterized in that, There are four abutting parts, which are evenly distributed along the circumference of the second blade. There are two blocking members, which extend and retract in opposite directions.

8. The fan device according to claim 1, characterized in that, Along the axial direction of the output shaft, the second blade is disposed between the first blade and the motor.

9. The fan device according to claim 1, characterized in that, The outer peripheral wall of the mounting base is arc-shaped.

10. A steam-roasting device, characterized in that, include: The wind turbine assembly includes any one of claims 1 to 9.

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