Air fryer and cooking equipment

Abstract

The utility model relates to the field of cooking utensils, in particular to an air fryer and cooking equipment.The air fryer is provided with a furnace cavity, a fan assembly and a hot air fan blade assembly, the fan assembly and the hot air fan blade assembly are located in the furnace cavity, a supporting piece for supporting food is detachably installed in the furnace cavity, the hot air fan blade assembly comprises a circular base plate and fan blades, and the base plate is provided with an installation face; the fan blades are connected to the mounting face and provided with windward faces and leeward faces, the included angle between the windward faces and the outer tangent plane of the base plate is 90 degrees + / -20 degrees, and the outer tangent plane passes through the windward faces or the intersecting line between the extending face of the windward faces and the peripheral face of the base plate. When the hot air fan blade assembly rotates, the effective action area, used for pushing hot air flow in the rotating direction to achieve hot air flow circulation, on the fan blades is close to the area of the windward side, the hot air flow stirring efficiency of the fan blades can be improved while the material consumption of the fan blades can be reduced, and the hot air circulation uniformity in a furnace cavity is improved; therefore, the cooking effect is improved.

Description

Technical Field

[0001] This application relates to the field of cooking appliances, specifically to an air fryer and cooking equipment. Background Technology

[0002] Air fryers, electric ovens and other cooking equipment are equipped with hot air fan blades inside the oven cavity, which are mainly used to stir the hot air inside the oven cavity to achieve hot air circulation.

[0003] Most hot air fan blade assemblies are made of ordinary stamped sheet metal. The hot air fan blade assembly is formed in one piece. Currently, the arrangement of the fan blades in the hot air fan blade assembly is unreasonable. When the cooking equipment is working, it is easy to cause uneven circulation of hot air in the oven cavity, resulting in uneven browning of food such as French fries, cookies, and toast, and unsatisfactory cooking effect and cooking speed. Utility Model Content

[0004] This application provides an air fryer and cooking equipment, which solves the technical problem of uneven hot air circulation in the oven cavity of the cooking equipment, resulting in unsatisfactory cooking effect and cooking speed.

[0005] According to a first aspect, one embodiment provides an air fryer having a cavity, a fan assembly, and a hot air fan blade assembly. A support member is detachably installed within the cavity for placing food to be cooked. Both the fan assembly and the hot air fan blade assembly are located within the cavity. The output shaft of the fan assembly is coaxially connected to the hot air fan blade assembly. The hot air fan blade assembly includes:

[0006] The chassis has a disc structure and a mounting surface facing the support member.

[0007] Fan blades are connected to the mounting surface, and the fan blades have a windward side and a leeward side;

[0008] The angle between the windward surface and the outer tangent surface of the chassis is 90°±20°, and the outer tangent surface passes through the intersection line between the windward surface or the extension surface of the windward surface and the outer peripheral surface of the chassis.

[0009] In one alternative embodiment, the extended surface of the windward side passes through the central axis of the chassis.

[0010] In one alternative embodiment, the fan blade has a central face that extends radially in the chassis, and the windward and leeward faces are arranged symmetrically about the central face.

[0011] In one optional embodiment, both the windward side and the leeward side are planar; both the windward side and the leeward side are parallel to the center plane, or the distance between the windward side and the leeward side gradually decreases or increases radially from the center of the chassis to the outer periphery of the chassis.

[0012] In one alternative embodiment, both the windward side and the leeward side are perpendicular to the mounting surface.

[0013] In one alternative embodiment, the chassis has a radial symmetry plane that extends radially through the chassis and passes through the central axis of the chassis; the fan blades are multiple and are arranged symmetrically about the radial symmetry plane.

[0014] In one alternative embodiment, a plurality of the fan blades are arranged at uniform intervals in the circumferential direction of the chassis.

[0015] In one alternative embodiment, the fan blades are mounted on the chassis by rivetless riveting.

[0016] In one optional embodiment, the fan blade has a connecting portion and a fan blade portion, the connecting portion has a mounting mating surface that fits against the mounting surface, the windward side and the leeward side are both located on the fan blade portion, and the windward side is perpendicular to the mounting mating surface.

[0017] According to a second aspect, one embodiment provides a cooking device having a furnace cavity, a fan assembly, and a hot air fan blade assembly. A support member is detachably installed within the furnace cavity for placing food to be cooked. Both the fan assembly and the hot air fan blade assembly are located within the furnace cavity. The output shaft of the fan assembly is coaxially connected to the hot air fan blade assembly. The hot air fan blade assembly includes:

[0018] The chassis has a disc structure and a mounting surface facing the support member.

[0019] Fan blades are connected to the mounting surface, and the fan blades have a windward side and a leeward side;

[0020] The angle between the windward surface and the outer tangent surface of the chassis is 90°±20°, and the outer tangent surface passes through the intersection line between the windward surface or the extension surface of the windward surface and the outer peripheral surface of the chassis.

[0021] According to the air fryer and cooking equipment of the above embodiments, the air fryer has a cavity, a fan assembly, and a hot air fan blade assembly. A support member is detachably installed inside the cavity for placing food to be cooked. Both the fan assembly and the hot air fan blade assembly are located inside the cavity. The output shaft of the fan assembly is coaxially connected to the hot air fan blade assembly. The hot air fan blade assembly includes a base and fan blades. The base has a disc structure and a mounting surface facing the support member. The fan blades are connected to the mounting surface and have a windward side and a leeward side. The angle between the windward surface and the outer tangent surface of the chassis is 90°±20°. The outer tangent surface passes through the intersection line between the windward surface or its extension and the outer circumference of the chassis. In this way, when the hot air fan blade assembly rotates, the effective working area on the fan blades used to push the hot airflow in the direction of rotation to achieve hot airflow circulation is similar to the area of ​​the windward surface. This can improve the stirring efficiency of the fan blades on the hot airflow while reducing the amount of fan blade material used, and improve the uniformity of hot air circulation in the oven cavity, thereby improving the cooking effect and cooking speed. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of a hot air fan blade assembly in one embodiment;

[0023] Figure 2 This is a front view of a hot air fan blade assembly in one embodiment;

[0024] Figure 3 This is a bottom view of a hot air fan blade assembly in one embodiment;

[0025] Figure 4 A top view of the chassis and one of the fan blades thereon in one embodiment;

[0026] Figure 5 A top view of the chassis and one of the fan blades thereon in another embodiment;

[0027] Figure 6 This is a top view of the chassis and one of the fan blades thereon in another embodiment.

[0028] In the diagram: 1. Chassis; 11. Mounting surface; 2. Fan blade; 21. Connecting part; 22. Fan blade part; 221. Windward side; 222. Leeward side. Detailed Implementation

[0029] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0030] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0031] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0032] The air fryer disclosed in this application has a cavity, a fan assembly, and a hot air fan blade assembly. A support is detachably installed inside the cavity to support the food to be cooked. The fan assembly and the hot air fan blade assembly are both located inside the cavity and above the support. The output shaft of the fan assembly is coaxially connected to the hot air fan blade assembly. The fan assembly can drive the hot air fan blade assembly to rotate, thereby circulating hot air inside the cavity and heating the food on the support.

[0033] The main improvement in the air fryer of this application embodiment lies in the hot air fan blade assembly. The structure of the fan blades 2 in the hot air fan blade assembly and their arrangement on the chassis 1 can improve the stirring efficiency of the hot air fan blade assembly in the oven cavity, improve the uniformity of hot air circulation in the oven cavity, and improve the cooking effect and cooking speed of the air fryer.

[0034] Specifically, in some embodiments, please refer to Figures 1 to 3The hot air fan blade assembly includes a chassis 1 and fan blades 2. The chassis 1 is generally a disc structure. The outer contour surfaces of the chassis 1 are located on the same cylindrical surface to form the outer peripheral surface of the chassis 1. The outer peripheral surface of the chassis 1 can be a continuous surface around the central axis of the chassis 1, or the outer peripheral surface of the chassis 1 can be arranged at intervals around the central axis of the chassis 1. The chassis 1 has a mounting surface 11 facing its axial side. The fan blades 2 are connected to the mounting surface 11 of the chassis 1. The fan blades 2 can be integrally stamped with the chassis 1, or the fan blades 2 can be separately set from the chassis 1, and the fan blades 2 are mounted on the mounting surface 11 of the chassis 1.

[0035] In some embodiments, please refer to Figure 1 The fan blade 2 has a connecting part 21 and a fan blade part 22. Both the connecting part 21 and the fan blade part 22 can be sheet-like structures. The connecting part 21 has a mounting mating surface that fits against the mounting surface 11 on the chassis 1. The connecting part 21 can be riveted to the chassis 1 by rivets, or the connecting part 21 can also be connected to the chassis 1 by a rivetless riveting method. The chassis 1 can be a closed disc structure, or the chassis 1 can also have a hollow structure at the mounting position of the fan blade 2, so as to reduce the weight of the hot air fan blade assembly and reduce the cost of the hot air fan blade assembly.

[0036] In an embodiment where the chassis 1 has a hollow structure, after the fan blade 2 is installed on the mounting surface 11 of the chassis 1, the connecting part 21 of the fan blade 2 can cover the hollow part of the chassis 1 so that the connecting part 21 and the chassis 1 form a closed structure.

[0037] The enclosed disc structure formed by the chassis 1 or the enclosed structure formed by the connection part 21 and the chassis 1 can separate the internal space of the oven cavity in the cooking equipment, so that the hot airflow is concentrated in the space where the fan blades 2 and the food are located, which helps to reduce the heat loss of the oven cavity and improve the heat utilization efficiency. In addition, the enclosed disc structure or enclosed structure also helps to make the stirring effect of the hot airflow similar when the hot fan blade assembly rotates forward and backward, which also helps to achieve uniform hot airflow circulation.

[0038] In the air fryer of this application embodiment, please refer to... Figures 1 to 6 The fan blade 2 has a windward side 221 and a leeward side 222. Both the windward side 221 and the leeward side 222 are located on the fan blade part 22. The main force of the windward side 221 to push the hot airflow is to stir the hot airflow and promote the circulation of hot air in the furnace cavity.

[0039] Please continue to refer to this. Figures 4 to 6The chassis 1 has an outer tangent surface TT" corresponding to the windward surface 221. The windward surface 221 or its extension intersects with the outer peripheral surface of the chassis 1 and has an intersection line. The outer tangent surface TT" on the chassis 1 corresponding to the windward surface 221 passes through the intersection line and is tangent to the outer peripheral surface of the chassis 1. The included angle between the windward surface 221 and the outer tangent surface TT" of the chassis 1 is set to 90°±20°. In this way, when the hot air fan blade assembly rotates, the effective working area of ​​the fan blade 2 used to push the hot airflow in the rotation direction to achieve hot airflow circulation is similar to the area of ​​the windward surface 221. This can reduce the amount of material used in the fan blade 2 while improving the stirring efficiency of the fan blade 2 on the hot airflow, improving the uniformity of hot air circulation in the oven cavity, thereby improving the cooking effect and cooking speed.

[0040] As in one embodiment, please refer to Figure 4 The fan blade 2 has a central plane OO", which is a plane. This central plane OO" extends radially from the chassis 1, and its extension passes through the central axis of the chassis 1. The thickness of the fan blade portion 22 in the fan blade 2 is uniform radially from the chassis 1. Both the windward side 221 and the leeward side 222 are parallel to the central plane OO". The angle between the windward side 221 and the corresponding outer tangent plane TT" is 87° or 93°. For another embodiment, please refer to... Figure 5 The thickness of the fan blade portion 22 in the fan blade 2 gradually increases radially from the center of the chassis 1 towards the outer periphery of the chassis 1. Both the windward side 221 and the leeward side 222 have an angle of less than 90° with the center plane OO". The angle between the windward side 221 and the corresponding outer tangent plane TT" is 89° or 91°. For another embodiment, please refer to... Figure 6 The thickness of the fan blade portion 22 in the fan blade 2 gradually decreases radially from the center of the chassis 1 to the outer periphery of the chassis 1. Both the windward side 221 and the leeward side 222 have an angle of less than 90° with the central plane OO". The angle between the windward side 221 and the corresponding external tangent plane TT" is 84° or 96°. In some embodiments, the extension surface of the central plane OO" or the windward side 221 may not pass through the central axis of the chassis 1. An angle is formed between the central plane OO" or the windward side 221 and the diameter of the chassis 1, as long as the angle between the windward side 221 and its corresponding external tangent plane TT" is 90°±20°.

[0041] In the embodiment where the angle between the windward surface 221 and its corresponding outer tangent surface TT" is 90°, the extended surface of the windward surface 221 passes through the central axis of the chassis 1. The area of ​​the windward surface 221 is closest to the effective area of ​​the hot airflow, which can maximize the stirring efficiency of the hot airflow by the fan blades 2 while minimizing the amount of material used in the fan blades 2, improve the uniformity of the hot air circulation in the oven cavity, and enhance the cooking effect and cooking speed.

[0042] In the above embodiments, the windward surface 221 can be a plane. In other embodiments, due to the influence of processing accuracy and installation accuracy, the windward surface 221 can also be a curved surface. The included angle between the windward surface 221 and the outer tangent surface of the chassis 1 corresponding to the windward surface 221 is the included angle between any outer tangent surface of the windward surface 221 and the outer tangent surface of the chassis 1 corresponding to the windward surface 221. Satisfying that the included angle is within the range of 90°±20° can also improve the stirring efficiency of the fan blades 2 for hot airflow while reducing the amount of material used in the fan blades 2.

[0043] In some embodiments, please refer to Figures 1 to 3 In embodiments where both the windward side 221 and the leeward side 222 are planar, both the windward side 221 and the leeward side 222 can be arranged perpendicular to the mounting surface 11. This can reduce the amount of material used in the fan blade 2 while ensuring the area of ​​action of the fan blade 2 in stirring the hot airflow when it rotates, thereby improving the stirring efficiency of the hot airflow of the hot air fan blade assembly. The fan blade portion 22 in the fan blade 2 is arranged perpendicularly to the connecting portion 21. The fan blade 2 can be formed by integral bending after stamping. The thickness of the fan blade portion 22 is equal everywhere in the axial direction of the chassis 1. Thus, the center plane OO" of the fan blade 2 is perpendicular to the mounting surface 11, and the windward side 221 and the leeward side 222 arranged parallel to the center plane OO" on the fan blade portion 22 are both perpendicular to the mounting surface 11.

[0044] In other embodiments, the windward side 221 and the leeward side 222 may both be arranged at an angle of less than 90° to the mounting surface 11. The thickness of the fan blade 22 in the axial direction of the chassis 1 gradually decreases from the chassis 1 to the fan blade 22. The center surface OO" on the fan blade 2 is arranged perpendicular to the mounting surface 11. The distance between the windward side 221 and the center surface OO" gradually decreases from the chassis 1 to the fan blade 22 in the axial direction of the chassis 1. The windward side 221, the leeward side 222 and the center surface OO" may intersect at the edge of the center surface OO" away from the chassis 1, so that the cross-section of the fan blade 22 forms a triangular structure. This can also ensure the area of ​​the fan blade 2 that acts on the hot airflow, thereby improving the stirring efficiency of the hot airflow.

[0045] In some embodiments, the windward side 221 and the leeward side 222 of the fan blade 2 are symmetrically arranged about the center plane OO". When the hot air fan blade assembly rotates forward, the leeward side 222 forms the windward side when the hot air fan blade assembly rotates in reverse. This makes the stirring effect of the windward side 221 on the hot airflow similar to the stirring effect of the windward side on the hot airflow when rotating in reverse. This helps to make the air circulation in the oven cavity uniform, which helps to improve the cooking effect and cooking speed.

[0046] In some embodiments, please continue to refer to Figures 1 to 6 Both the windward side 221 and the leeward side 222 can be planar structures, which facilitates the processing and manufacturing of the fan blades 2, helps to simplify the processing steps of the hot air fan blade assembly, and reduces the cost of the hot air fan blade assembly.

[0047] In some embodiments, please refer to Figures 4 to 6 Both the windward side 221 and the leeward side 222 are planes, and both the windward side 221 and the leeward side 222 form an angle of less than 90° with the center plane OO", or both the windward side 221 and the leeward side 222 are parallel to the center plane OO".

[0048] In one embodiment, please refer to Figure 2 and Figure 4 The thickness of the fan blade portion 22 in the fan blade 2 is equal everywhere. The center surface OO" of the fan blade 2 is located in the middle of the thickness direction of the fan blade portion 22. The windward side 221 and the leeward side 222 of the fan blade 2 are the two sides of the thickness direction of the fan blade portion 22. The windward side 221 and the leeward side 222 of the fan blade 2 are arranged on both sides of the center surface OO" and are both arranged parallel to the center surface OO".

[0049] In other embodiments, please refer to Figure 5 and Figure 6 The thickness of the fan blade 22 in the fan blade 2 can also be set, that is, the distance between the windward side 221 and the leeward side 222 gradually decreases or gradually increases from the center to the outer periphery of the chassis 1 in the radial direction of the chassis 1, and the angle between the windward side 221 and the leeward side 222 and the center plane OO" is less than 90°.

[0050] In an embodiment where the thickness of the fan blade portion 22 gradually increases from the center of the chassis 1 to the outer periphery of the chassis 1, the extension surfaces of the windward side 221 and the leeward side 222 can both pass through the central axis of the chassis 1; or in an embodiment where the thickness of the fan blade portion 22 gradually increases from the outer periphery of the chassis 1 to the center of the chassis 1, the extension surfaces of the windward side 221 and the leeward side 222, as well as the central surface OO", intersect at the outer periphery of the chassis 1. In both cases, the fan blades 2 can have a similar stirring effect on the hot airflow when the hot air fan blade assembly rotates forward and backward, thereby uniformly distributing the hot airflow in the furnace cavity.

[0051] Of course, in other embodiments, the windward side 221 and the leeward side 222 of the fan blade 22 can also be curved or bent surfaces, such as wavy surfaces.

[0052] For the entire hot air fan blade assembly, please refer to... Figures 1 to 3 There are multiple fan blades 2, which are arranged circumferentially on the base 1. The base 1 has a radial symmetry plane, which can be one of the radial planes of the base 1 or multiple radial planes on the base 1. The radial symmetry plane passes through the central axis of the base 1. All the fan blades 2 installed on the base 1 are arranged symmetrically about the radial symmetry plane. This ensures that the stirring effect of the hot airflow in the oven cavity is similar when the entire hot air fan blade assembly rotates forward and backward, thereby uniformly distributing the hot airflow in the oven cavity, improving the circulation effect of the hot airflow, and improving the cooking effect and cooking speed.

[0053] In one embodiment, please refer to Figure 2 The fan blades 2 are provided with seven blades, which are evenly spaced around the circumference of the base 1. The center surface OO" of each fan blade 2 can be used as the radial symmetry plane of the base 1. In another embodiment, the number of fan blades 2 can be even, such as eight. The eight fan blades 2 are evenly spaced around the circumference of the base 1. The center surface OO" of each fan blade 2 and the radial surface of the base 1 at the midpoint between two adjacent fan blades 2 can be used as the radial symmetry plane of the base 1.

[0054] This application also discloses a cooking device, which can be an oven or other device capable of heating and cooking food by circulating hot air. The cooking device has a furnace cavity, a fan assembly, and a hot air fan blade assembly. A support member is detachably installed inside the furnace cavity to support the food to be cooked. The fan assembly and the hot air fan blade assembly are both located inside the furnace cavity and above the support member. The output shaft of the fan assembly is coaxially connected to the hot air fan blade assembly. The fan assembly can drive the hot air fan blade assembly to rotate, thereby circulating hot air within the furnace cavity to heat the food on the cooking support member.

[0055] The structure of the hot air fan blade assembly is the same as that of the hot air fan blade assembly in any of the above air fryer embodiments. The hot air fan blade assembly sets the included angle between the windward surface 221 and the outer tangent surface of the base plate 1 to 90°±20°, so that the outer tangent surface of the base plate 1 passes through the intersection line between the windward surface 221 or the extension surface of the windward surface 221 and the outer peripheral surface of the base plate 1. This reduces the cost of the hot air fan blade assembly and the entire cooking equipment while improving the uniformity of hot air circulation in the oven cavity, thereby enhancing the cooking effect and cooking speed of the cooking equipment.

[0056] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. An air fryer having an oven cavity, a fan assembly and a hot air fan blade assembly, characterised in that, A support member is detachably installed inside the oven cavity for placing food to be cooked. Both the fan assembly and the hot air fan blade assembly are located inside the oven cavity. The output shaft of the fan assembly is coaxially connected to the hot air fan blade assembly. The hot air fan blade assembly includes: The chassis has a disc structure and a mounting surface facing the support member. Fan blades are connected to the mounting surface, and the fan blades have a windward side and a leeward side; The angle between the windward surface and the outer tangent surface of the chassis is 90°±20°, and the outer tangent surface passes through the intersection line between the windward surface or the extension surface of the windward surface and the outer peripheral surface of the chassis.

2. The air fryer of claim 1, wherein, The extended surface of the windward side passes through the central axis of the chassis.

3. The air fryer of claim 1, wherein, The fan blades have a central surface that extends radially in the chassis, and the windward and leeward sides are arranged symmetrically about the central surface.

4. The air fryer of claim 3, wherein, Both the windward side and the leeward side are planar; both the windward side and the leeward side are parallel to the center plane, or the distance between the windward side and the leeward side gradually decreases or increases radially from the center of the chassis to the outer periphery of the chassis.

5. The air fryer of claim 1, wherein, Both the windward side and the leeward side are perpendicular to the mounting surface.

6. The air fryer of any one of claims 1 to 5, wherein, The chassis has a radial symmetry plane that extends radially along the chassis and passes through the central axis of the chassis. The fan blades are multiple, and the multiple fan blades are arranged symmetrically about the radial symmetrical plane.

7. The air fryer of claim 6, wherein, The plurality of fan blades are evenly spaced in the circumferential direction of the chassis.

8. The air fryer of any one of claims 1 to 5, wherein, The fan blades are mounted on the chassis using a rivetless riveting method.

9. The air fryer of any one of claims 1 to 5, wherein, The fan blade has a connecting part and a fan blade part. The connecting part has a mounting mating surface that fits with the mounting surface. The windward side and the leeward side are both located on the fan blade part. The windward side is perpendicular to the mounting mating surface.

10. A cooking appliance having an oven cavity, a fan assembly and a hot fan blade assembly, characterised in that, A support member is detachably installed inside the furnace cavity for placing food to be cooked; both the fan assembly and the hot air fan blade assembly are located inside the furnace cavity, and the output shaft of the fan assembly is coaxially connected to the hot air fan blade assembly. The hot air fan blade assembly includes: The chassis has a disc structure and a mounting surface facing the support member. Fan blades are connected to the mounting surface, and the fan blades have a windward side and a leeward side; The angle between the windward surface and the outer tangent surface of the chassis is 90°±20°, and the outer tangent surface passes through the intersection line between the windward surface or the extension surface of the windward surface and the outer peripheral surface of the chassis.

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