Shell assembly and cooking appliance

Abstract

The utility model provides a kind of shell assembly and cooking utensil.Shell assembly includes body and first fan;Body is provided with support part, and first fan includes shaft and multiple fan blades, multiple fan blades are arranged along the circumference of shaft, the first end of shaft is provided with recess, at least part of support part is located in recess, and it is contacted with shaft, and the second end of shaft is free end.Because the second end of shaft is free end, first fan in rotating process, the second end of shaft also cannot be limited by remaining structure, so that the friction force that first fan receives is smaller, first fan rotates more flexible, reduce the probability that the phenomenon that first fan occurs cannot rotate, to further improve the smoothness in the rotating process of first fan.

Description

Technical Field

[0001] This utility model relates to the field of cooking utensil technology, and more specifically, to a shell assembly and a cooking utensil. Background Technology

[0002] Currently, air fryers are equipped with a fresh air system. During the operation of the air fryer, outside air enters the cooking chamber through the fresh air system, thereby increasing the oxygen content in the cooking chamber and improving the taste of the food cooked in the air fryer.

[0003] The fresh air system has a first fan installed at the air inlet. The airflow entering the fresh air system will drive the first fan to rotate, thereby realizing the external display of the air intake process of the fresh air system, so that users can judge the working status of the fresh air system based on the rotation of the first fan.

[0004] In related technologies, the first fan is equipped with a rotating shaft, and the lid of the air fryer is equipped with two ejector pins located at the upper and lower ends of the rotating shaft, thereby limiting the movement of the first fan. However, since both ends of the rotating shaft are subjected to frictional forces from the ejector pins during the rotation of the first fan, the frictional force between the first fan and the ejector pins is relatively large, thus reducing the smoothness of the first fan's rotation. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0006] Therefore, the first aspect of this utility model proposes a shell assembly.

[0007] The second aspect of this utility model provides a cooking utensil.

[0008] In view of the above, the first aspect of the present invention provides a shell assembly, including a body and a first fan; the body is provided with a support portion, the first fan includes a shaft and a plurality of fan blades, the plurality of fan blades are arranged circumferentially along the shaft, a groove is provided at a first end of the shaft, at least a portion of the support portion is located in the groove and in contact with the shaft, and a second end of the shaft is a free end.

[0009] The shell assembly provided in this application has a support portion on its main body. The shell assembly includes a first fan, which includes a rotating shaft. A groove is provided at the first end of the rotating shaft. At least a portion of the support portion is located in the groove and contacts the rotating shaft, thereby supporting the first fan through the support portion. The first fan also includes multiple fan blades, which are arranged circumferentially along the rotating shaft. When airflow outside the cooking appliance passes through the first fan, the fan blades are driven by the airflow, and the first fan can rotate relative to the main body, realizing the external display of the air intake process of the cooking appliance, thereby making it easier for users to judge the working status of the fresh air system based on the rotation of the first fan.

[0010] Because the first end of the shaft has a groove, at least part of the support is located within the groove and in contact with the shaft. The support, in conjunction with the groove, supports the first fan and limits its movement, improving its stability during rotation. Since the second end of the shaft is free, it is not limited by other structures during rotation, resulting in less friction and more flexible rotation. This reduces the probability of the fan failing to rotate, thus improving its smoothness. Even if the first fan rises slightly during rotation, the groove and support prevent it from detaching, allowing it to rotate stably at the preset position. Furthermore, the reduced friction between the fan and the support after the fan rises further enhances the smoothness of its rotation.

[0011] Optionally, the groove needs to make point-to-point contact with the support to reduce the probability of starting failure due to increased friction of the fan blades.

[0012] In some technical solutions of this utility model, a protrusion is provided at the second end of the rotating shaft, and the protrusion extends away from the rotating shaft.

[0013] In this technical solution, a protrusion is provided at the second end of the rotating shaft. The protrusion gives the first fan a greater weight, which in turn increases the gravitational force on the first fan, improving its stability during rotation. The protrusion extends away from the rotating shaft, allowing the operator to grip the first fan when assembling or repairing the cooking appliance, thus improving the convenience of assembly and repair.

[0014] Optionally, the diameter of the protrusion is smaller than the diameter of the shaft.

[0015] In some technical solutions of this utility model, the main body is provided with an installation groove, one end of which has an opening, and a support part is provided in the installation groove. The shell assembly also includes a cover body, which covers the end of the installation groove with the opening. In the axial direction of the rotating shaft, the distance between the protrusion and the cover body is less than the depth of the groove.

[0016] In this technical solution, the main body is provided with a mounting groove that can communicate with the cooking cavity of the cooking appliance, thus making the mounting groove the air intake end of the cooking appliance's fresh air system. The shell assembly also includes a cover, which covers the end of the mounting groove with an opening. The cover closes the opening of the mounting groove, reducing the probability of foreign objects from outside the cooking appliance entering the mounting groove, thereby reducing the probability of the first fan failing to rotate due to foreign objects, and further improving the stability of the first fan during the operation of the cooking appliance. In the axial direction of the rotating shaft, since the distance between the protrusion and the cover is less than the depth of the groove, even if the first fan rises a certain height relative to the support, the first fan will not detach from the support, further improving the stability of the first fan.

[0017] Specifically, during the transportation of the cooking appliance, if the appliance is tilted or inverted, the first fan will move towards the cover. After the first fan has moved a certain distance, the protrusion on the rotating shaft will contact the cover, and the cover will restrict the displacement of the first fan, so the first fan will stop moving. At this time, since the distance between the protrusion and the cover is less than the depth of the groove, the support part is still not disengaged from the groove when the protrusion contacts the cover, so that the support part can still restrict the movement of the first fan. After the cooking appliance is returned to its normal position, the groove and the support part cooperate to guide the movement of the first fan, so that the first fan can automatically return to its normal position. When the cooking appliance starts working again, the first fan can still work normally according to the air intake needs of the fresh air system.

[0018] During the operation of the cooking appliance, the first fan rises a certain distance due to buoyancy from the air. At this point, the protrusion on the rotating shaft contacts the cover, restricting the displacement of the first fan, and the first fan stops moving. Since the distance between the protrusion and the cover is less than the depth of the groove, the support part is still in the groove when the protrusion contacts the cover, allowing the support part to still restrict the movement of the first fan. This allows the first fan to rotate more stably within the mounting slot. After the cooking appliance finishes working or the fresh air system stops working, the groove and the support part cooperate to guide the movement of the first fan, allowing the first fan to automatically return to its normal position. When the cooking appliance starts working again, the first fan can still work normally according to the air intake needs of the fresh air system.

[0019] Optionally, the housing assembly also includes an air inlet ring arranged around the opening of the mounting groove, the air inlet ring being provided with an air inlet, and a cover covering the air inlet ring.

[0020] In some technical solutions of this utility model, the first fan also includes a hub, which is annular, extends circumferentially along multiple fan blades, and is connected to multiple fan blades.

[0021] In this technical solution, the first fan also includes a hub, which is annular and extends circumferentially along multiple fan blades and is connected to multiple fan blades. The hub supports the fan blades on the outer periphery, thereby increasing the strength of the first fan, reducing the probability of deformation of the first fan, and further improving the stability of the first fan during operation.

[0022] In some technical solutions of this utility model, the fan blades extend from the side of the hub near the opening to the side of the hub away from the opening in the axial direction of the rotating shaft.

[0023] In this technical solution, along the axial direction of the rotating shaft, the fan blades extend from the side of the hub near the opening to the side of the hub away from the opening. This ensures air contact with the fan blades while reducing air resistance, further accelerating the fan blade rotation speed. Furthermore, the extension of the fan blades from the side of the hub near the opening to the side away from the opening increases the blade area, making the blades easier to drive by airflow and further improving the smoothness of the first fan's rotation.

[0024] Optionally, the fan blades are connected to the upper end face of the hub, and the fan blades are also connected to the lower end face of the hub.

[0025] The angle between the fan blade and the horizontal plane of the wheel hub is greater than 0 degrees and less than 90 degrees.

[0026] In some technical solutions of this utility model, the inner diameter of the mounting groove is larger than the outer diameter of the wheel hub.

[0027] In this technical solution, during the rotation of the first fan, because the inner diameter of the mounting groove is larger than the outer diameter of the hub, the probability of the first fan colliding with the inner wall of the mounting groove is reduced, further improving the stability of the first fan during rotation. When the first fan starts, because the inner diameter of the mounting groove is larger than the outer diameter of the hub, the probability of the first fan colliding with the inner wall of the mounting groove is reduced, thereby improving the smoothness of the first fan's starting process.

[0028] In some technical solutions of this utility model, the fan blades extend at an axial angle relative to the rotating shaft.

[0029] In this technical solution, the fan blade extends at an axial angle relative to the rotating shaft. After the airflow entering the mounting groove through the opening of the mounting groove comes into contact with the fan blade, it will apply a tangential force to the fan blade. The direction of the tangential force is the same as the tangential direction of the fan blade, thereby driving the fan blade to rotate and improving the smoothness of the fan blade when starting.

[0030] In some technical solutions of this utility model, the inner wall of the groove extends in an arc along the axial direction of the rotating shaft, and / or the outer wall of the support extends in an arc.

[0031] In this technical solution, the inner wall of the groove extends in an arc along the axial direction of the rotating shaft, and / or the outer wall of the support extends in an arc, reducing the contact area between the support and the inner wall of the groove, reducing the friction between the support and the inner wall of the groove, and further improving the smoothness of the first fan during rotation.

[0032] Optionally, the support part mates with the groove, with point-to-point contact between the support part and the groove, to prevent the fan blades from failing to start due to increased friction. Both the groove and the support part have arc-shaped cross-sections in the vertical direction.

[0033] In some technical solutions of this utility model, the area of ​​the radial cross section of the groove increases from the side of the groove near the opening to the side away from the opening; or the area of ​​the radial cross section of the support increases from the side of the support near the opening to the side away from the opening.

[0034] In this technical solution, the radial cross-sectional area of ​​the groove increases from the side of the groove near the opening to the side away from the opening, so that the inner wall of the groove can cooperate with the support to guide the first fan during assembly, thereby simplifying the assembly process of the first fan; and the radial cross-sectional area of ​​the groove increases from the side of the groove near the opening to the side away from the opening, so that after the first fan is displaced, the groove and the support can cooperate to make the first fan easier to reset, thereby ensuring the smoothness of the first fan when it restarts.

[0035] The radial cross-sectional area of ​​the support increases from the side of the support closer to the opening to the side farther from the opening, so that the outer wall of the support can cooperate with the groove to guide the first fan during assembly, thereby simplifying the assembly process of the first fan; and the radial cross-sectional area of ​​the support increases from the side of the support closer to the opening to the side farther from the opening, so that after the first fan is displaced, the groove and the support can cooperate to make the first fan easier to reset, thereby ensuring the smoothness of the first fan when it restarts.

[0036] In some technical solutions of this utility model, at any position along the axial direction of the rotating shaft, the diameter of the support is smaller than the inner diameter of the groove.

[0037] In this technical solution, at any position along the axial direction of the rotating shaft, the diameter of the support is smaller than the inner diameter of the groove, so that the top of the support contacts the inner wall of the groove, and the area of ​​the support other than the top does not contact the inner wall of the groove, thereby reducing the friction between the support and the groove and improving the smoothness of the rotation of the first fan.

[0038] Specifically, in the horizontal direction, the inner diameter of the groove cross-section must be larger than the outer diameter of the support cross-section.

[0039] The second aspect of this utility model provides a cooking appliance, including a shell assembly, a reflector, a fresh air duct, a second fan, and a flow guide channel as described in any of the above technical solutions; the shell assembly is provided with a cooking cavity; the reflector is disposed inside the shell assembly and located at the top of the cooking cavity; one end of the fresh air duct is connected to the cooking cavity, and the other end extends toward the first fan; the second fan is disposed on the side of the reflector near the cooking cavity; the flow guide channel is arranged circumferentially along the second fan and is connected to the fresh air duct.

[0040] Since the cooking appliance includes a shell component as described in any of the above technical solutions, it possesses all the beneficial effects of the shell component as described in any of the above technical solutions, which will not be elaborated further here.

[0041] Optionally, the cooking appliance is an air fryer.

[0042] The cooking appliance also includes a support and a reflector. The support is located on top of the cooking cavity, and the reflector is connected to the support.

[0043] The cooking appliance also includes a motor, a second fan, and a heating element. The motor is mounted on a bracket, and its output shaft passes through a reflector and extends into the cooking cavity. The second fan is located on the side of the reflector closest to the cooking cavity. The heating element is arranged around the second fan.

[0044] When the cooking appliance is cooking food, the second fan rotates, driving the airflow in the cooking cavity. The airflow is heated after passing through the heating element, thereby cooking the food in the cooking cavity.

[0045] The cooking appliance also includes a deflector plate, an air inlet on the reflector, which is connected to the fresh air duct, the deflector plate and the reflector plate are connected together, and the deflector plate and the reflector plate form a deflection channel. The deflection channel is arranged around the second fan and is connected to the fresh air duct through the air inlet.

[0046] The second fan rotates, driving airflow through the guide channel. The airflow in the guide channel creates a negative pressure area at the air inlet, which in turn drives the gas outside the cooking appliance into the cooking chamber through the fresh air duct.

[0047] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0048] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0049] Figure 1 One of the cross-sectional views of a shell assembly according to an embodiment of the present invention;

[0050] Figure 2 This is one of the structural schematic diagrams of a shell assembly according to an embodiment of the present invention;

[0051] Figure 3 This is a second schematic diagram of the structure of a shell assembly according to an embodiment of the present invention;

[0052] Figure 4 This is one of the structural schematic diagrams of a first fan according to an embodiment of the present invention;

[0053] Figure 5 This is a second schematic diagram of the structure of a first fan according to an embodiment of the present invention;

[0054] Figure 6 This is a third schematic diagram of the structure of a first fan according to an embodiment of the present invention;

[0055] Figure 7 This is a cross-sectional view of a first fan according to an embodiment of the present invention;

[0056] Figure 8 This is a second cross-sectional view of a shell assembly according to an embodiment of the present invention;

[0057] Figure 9 This is a third cross-sectional view of a shell assembly according to an embodiment of the present invention;

[0058] Figure 10 This is a third schematic diagram of the structure of a shell assembly according to an embodiment of the present invention;

[0059] Figure 11 This is a fourth cross-sectional view of a shell assembly according to an embodiment of the present invention;

[0060] Figure 12 Fifth cross-sectional view of a shell assembly according to an embodiment of the present invention;

[0061] Figure 13 This is a partial schematic diagram of a shell assembly according to an embodiment of the present invention;

[0062] Figure 14 This is a schematic diagram of a cooking appliance according to an embodiment of the present invention.

[0063] in, Figures 1 to 14 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0064] 100 Shell assembly, 110 Body, 112 Mounting slot, 114 Support, 116 Opening, 120 First fan, 121 Shaft, 122 Fan blade, 123 Groove, 124 Protrusion, 125 Hub, 126 First end face, 127 Second end face, 130 Cover, 140 Air inlet ring, 150 Cooking cavity, 200 Reflector, 300 Fresh air duct, 400 Second fan, 500 Air guide plate, 510 Air guide channel. Detailed Implementation

[0065] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0066] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0067] The following reference Figures 1 to 14 The present invention describes a shell assembly 100 and a cooking appliance according to some embodiments of the present invention.

[0068] In one embodiment of this utility model, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a housing assembly 100 is provided, including a body 110 and a first fan 120; the body 110 is provided with a support portion 114, and the first fan 120 includes a rotating shaft 121 and a plurality of fan blades 122, the plurality of fan blades 122 being arranged circumferentially along the rotating shaft 121. Figure 4 Arranged in the direction indicated by the middle arrow D), the first end of the rotating shaft 121 is provided with a groove 123, at least a portion of the support part 114 is located in the groove 123 and contacts the rotating shaft 121, and the second end of the rotating shaft 121 is a free end.

[0069] In this embodiment, the shell assembly 100 includes a body 110, which is provided with a support portion 114. The shell assembly 100 also includes a first fan 120, which includes a rotating shaft 121. A groove 123 is provided at the first end of the rotating shaft 121. At least a portion of the support portion 114 is located in the groove 123 and contacts the rotating shaft 121, thereby supporting the first fan 120 through the support portion 114. The first fan 120 also includes a plurality of fan blades 122, which are arranged circumferentially along the rotating shaft 121. When the airflow outside the cooking appliance passes through the first fan 120, the fan blades 122 are driven by the airflow, and the first fan 120 can rotate relative to the body 110, realizing the external display of the air intake process of the cooking appliance, so that the user can judge the working status of the fresh air system based on the rotation of the first fan 120.

[0070] Because the first end of the rotating shaft 121 has a groove 123, at least a portion of the support portion 114 is located within the groove 123 and contacts the rotating shaft 121. While supporting the first fan 120, the support portion 114, in conjunction with the groove 123, limits the movement of the first fan 120, improving its stability during rotation. Since the second end of the rotating shaft 121 is a free end, it is not limited by other structures during rotation, resulting in less friction on the first fan 120, more flexible rotation, and a reduced probability of it failing to rotate, thus improving the smoothness of its rotation. Even if the first fan 120 rises to a certain position during rotation, the first fan 120 will not detach from the support part 114 due to the cooperation between the groove 123 and the support part 114. Therefore, the first fan 120 can still rotate stably in the preset position. Furthermore, after the first fan 120 rises to a certain position, the friction between the first fan 120 and the support part 114 is reduced, which can further improve the smoothness of the rotation process of the first fan 120.

[0071] Optionally, the groove 123 needs to make point-to-point contact with the support 114 to reduce the probability of the fan blade 122 failing to start due to increased friction.

[0072] This embodiment provides a shell assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0073] like Figure 1 , Figure 6 and Figure 7 As shown, a protrusion 124 is provided at the second end of the rotating shaft 121, and the protrusion 124 is oriented away from the rotating shaft 121. Figure 7 (Extends in the direction indicated by the middle arrow E).

[0074] In this embodiment, a protrusion 124 is provided at the second end of the rotating shaft 121. The protrusion 124 makes the first fan 120 heavier, thereby increasing the gravitational force on the first fan 120 and improving the stability of the first fan 120 during rotation. The protrusion 124 extends away from the rotating shaft 121, allowing the operator to grasp the first fan 120 when assembling or repairing the cooking appliance, thus improving the convenience of assembling and repairing the cooking appliance.

[0075] Optionally, the diameter of the protrusion 124 is smaller than the diameter of the shaft 121.

[0076] This embodiment provides a shell assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0077] like Figure 1 and Figure 8 As shown, the main body 110 is provided with a mounting groove 112, one end of which has an opening 116, and a support 114 is disposed within the mounting groove 112; the shell assembly 100 also includes a cover 130, which covers the end of the mounting groove 112 with the opening 116; wherein, in the axial direction of the rotating shaft 121 ( Figure 1 In the direction indicated by the middle arrow A, the distance H3 between the protrusion 124 and the cover 130 is less than the depth H2 of the groove 123.

[0078] In this embodiment, the main body 110 is provided with a mounting groove 112, which can communicate with the cooking cavity 150 of the cooking appliance, thereby making the mounting groove 112 the air intake end of the fresh air system of the cooking appliance. The shell assembly 100 also includes a cover 130, which covers one end of the mounting groove 112 with an opening 116. The cover 130 closes the opening 116 of the mounting groove 112, reducing the probability of foreign objects from outside the cooking appliance entering the mounting groove 112, thereby reducing the probability of the first fan 120 failing to rotate due to foreign objects, and further improving the stability of the first fan 120 during the operation of the cooking appliance. In the axial direction of the rotating shaft 121, since the distance H3 between the protrusion 124 and the cover 130 is less than the depth H2 of the groove 123, even if the first fan 120 rises a certain height relative to the support 114, the first fan 120 will not detach from the support 114, further improving the stability of the first fan 120.

[0079] Optionally, the support portion 114 is disposed within the mounting groove 112.

[0080] Specifically, during the transportation of the cooking appliance, if the appliance is tilted or inverted, the first fan 120 will move towards the cover 130. After the first fan 120 moves a certain distance, the protrusion 124 on the rotating shaft 121 will contact the cover 130, and the cover 130 will restrict the displacement of the first fan 120, so the first fan 120 will no longer move. At this time, since the distance H3 between the protrusion 124 and the cover 130 is less than the depth H2 of the groove 123, when the protrusion 124 contacts the cover 130, the support part 114 has not yet disengaged from the groove 123, so that the support part 114 can still restrict the movement of the first fan 120. After the cooking appliance is returned to its normal placement state, the groove 123 and the support part 114 cooperate to guide the movement of the first fan 120, so that the first fan 120 can automatically return to its normal position. When the cooking appliance starts working again, the first fan 120 can still work normally according to the air intake needs of the fresh air system.

[0081] During the operation of the cooking appliance, after the first fan 120 rises a certain distance due to buoyancy from the air, the protrusion 124 on the rotating shaft 121 contacts the cover 130. The cover 130 restricts the displacement of the first fan 120, and the first fan 120 stops moving. At this time, since the distance H3 between the protrusion 124 and the cover 130 is less than the depth H2 of the groove 123, when the protrusion 124 contacts the cover 130, the support part 114 is still not disengaged from the groove 123, so that the support part 114 can still restrict the movement of the first fan 120, thereby allowing the first fan 120 to rotate more stably in the mounting groove 112. After the cooking appliance finishes working, or after the fresh air system stops working, the groove 123 and the support part 114 cooperate to guide the movement of the first fan 120, so that the first fan 120 can automatically return to the normal position. When the cooking appliance starts working again, the first fan 120 can still work normally according to the air intake needs of the fresh air system.

[0082] Optionally, the housing assembly 100 also includes an air inlet ring 140, which is arranged around the opening 116 of the mounting groove 112 and has an air inlet. The cover 130 is placed on the air inlet ring 140.

[0083] This embodiment provides a shell assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0084] like Figure 4 , Figure 5 and Figure 6 As shown, the first fan 120 also includes a hub 125, which is annular and extends circumferentially along the plurality of fan blades 122. Figure 6 It extends in the direction indicated by the middle arrow C and is connected to multiple fan blades 122.

[0085] In this embodiment, the first fan 120 also includes a hub 125. The hub 125 is annular and extends circumferentially along the plurality of fan blades 122 and is connected to the plurality of fan blades 122. The hub 125 supports the fan blades 122 on the outer periphery of the fan blades 122, thereby increasing the strength of the first fan 120, reducing the probability of deformation of the first fan 120, and further improving the stability of the first fan 120 during operation.

[0086] This embodiment provides a shell assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0087] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in the axial direction of the rotating shaft 121, the fan blade 122 extends from the side of the hub 125 near the opening 116 to the side of the hub 125 away from the opening 116.

[0088] In this embodiment, along the axial direction of the rotating shaft 121, the fan blade 122 extends from the side of the hub 125 near the opening 116 to the side of the hub 125 away from the opening 116. This ensures air contact with the fan blade 122 while reducing air resistance, further accelerating the rotation speed of the fan blade 122. Furthermore, the extension of the fan blade 122 from the side of the hub 125 near the opening 116 to the side of the hub 125 away from the opening 116 increases the area of ​​the fan blade 122, making it easier for the fan blade 122 to be driven by airflow, further improving the smoothness of the rotation process of the first fan 120.

[0089] Optionally, the fan blade 122 is connected to the upper end face of the hub 125, and the fan blade 122 is connected to the lower end face of the hub 125.

[0090] The angle between the fan blade 122 and the horizontal plane of the hub 125 is greater than 0 degrees and less than 90 degrees.

[0091] This embodiment provides a shell assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0092] like Figure 9 and Figure 10 As shown, the inner diameter D1 of the mounting groove 112 is larger than the outer diameter D2 of the hub 125.

[0093] In this embodiment, during the rotation of the first fan 120, because the inner diameter D1 of the mounting groove 112 is larger than the outer diameter D2 of the hub 125, the probability of the first fan 120 colliding with the inner wall of the mounting groove 112 is reduced, further improving the stability of the first fan 120 during rotation. When the first fan 120 starts, because the inner diameter D1 of the mounting groove 112 is larger than the outer diameter D2 of the hub 125, the probability of the first fan 120 colliding with the inner wall of the mounting groove 112 is reduced, thereby improving the smoothness of the starting process of the first fan 120.

[0094] This embodiment provides a shell assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0095] like Figure 11 As shown, the distance H1 between the first end face 126 of the hub 125 away from the opening 116 and the bottom wall of the mounting groove 112 is greater than or equal to 3 mm.

[0096] In this embodiment, during the rotation of the first fan 120, since the distance H1 between the first end face 126 of the hub 125 away from the opening 116 and the bottom wall of the mounting groove 112 is greater than or equal to 3 mm, the probability of the first fan 120 colliding with the bottom wall of the mounting groove 112 is reduced, further improving the stability of the first fan 120 during rotation. When the first fan 120 starts, since the distance H1 between the first end face 126 of the hub 125 away from the opening 116 and the bottom wall of the mounting groove 112 is greater than or equal to 3 mm, the probability of the first fan 120 colliding with the bottom wall of the mounting groove 112 is reduced, thereby improving the smoothness of the first fan 120 starting process.

[0097] Specifically, the distance H1 between the first end face 126 of the hub 125 away from the opening 116 and the bottom wall of the mounting groove 112 is less than or equal to 50 mm.

[0098] The distance H1 between the first end face 126 of the hub 125 away from the opening 116 and the bottom wall of the mounting groove 112 can be 3 mm.

[0099] The distance H1 between the first end face 126 of the hub 125 away from the opening 116 and the bottom wall of the mounting groove 112 can also be 4 mm.

[0100] The distance H1 between the first end face 126 of the hub 125 away from the opening 116 and the bottom wall of the mounting groove 112 can also be 5 mm.

[0101] The distance H1 between the first end face 126 of the hub 125 away from the opening 116 and the bottom wall of the mounting groove 112 can also be 10 mm.

[0102] The distance H1 between the first end face 126 of the hub 125 away from the opening 116 and the bottom wall of the mounting groove 112 can also be 50 mm.

[0103] This embodiment provides a shell assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0104] like Figure 12 As shown, the distance H4 between the second end face 127 of the hub 125 near the opening 116 and the end of the mounting groove 112 with the opening 116 is greater than or equal to 5 mm.

[0105] In this embodiment, when the first fan 120 starts, since the distance H4 between the second end face 127 of the hub 125 near the opening 116 and the end of the mounting groove 112 with the opening 116 is greater than or equal to 5 mm, the area of ​​the side wall of the mounting groove 112 above the first fan 120 has a greater height, thereby enabling the side wall of the mounting groove 112 to provide sufficient height to guide airflow to drive the first fan 120 to rotate; since the distance H4 between the second end face 127 of the hub 125 near the opening 116 and the end of the mounting groove 112 with the opening 116 is greater than or equal to 5 mm, the probability of the first fan 120 colliding with the cover 130 is reduced, thereby improving the smoothness of the first fan 120 starting process. During the rotation of the first fan 120, since the distance H4 between the second end face 127 of the hub 125 near the opening 116 and the end of the mounting groove 112 with the opening 116 is greater than or equal to 5 mm, the probability of the first fan 120 colliding with the cover 130 is reduced, and the stability of the first fan 120 during rotation is further improved.

[0106] Specifically, the side wall of the mounting slot 112 can provide sufficient height to guide airflow. Utilizing the Candahl effect, the air outside the cooking appliance is guided to flow from top to bottom along the side wall of the mounting slot 112, thereby exerting a vertical downward force on the fan blade 122, causing the first fan 120 to start rotating.

[0107] Specifically, the distance H4 between the second end face 127 of the hub 125 near the opening 116 and the end of the mounting groove 112 with the opening 116 is less than or equal to 50 mm.

[0108] The distance H4 between the second end face 127 of the hub 125 near the opening 116 and the end of the mounting groove 112 with the opening 116 can be 5 mm.

[0109] The distance H4 between the second end face 127 of the hub 125 near the opening 116 and the end of the mounting groove 112 with the opening 116 can also be 6 mm.

[0110] The distance H4 between the second end face 127 of the hub 125 near the opening 116 and the end of the mounting groove 112 with the opening 116 can also be 7 mm.

[0111] The distance H4 between the second end face 127 of the hub 125 near the opening 116 and the end of the mounting groove 112 with the opening 116 can also be 10 mm.

[0112] The distance H4 between the second end face 127 of the hub 125 near the opening 116 and the end of the mounting groove 112 with the opening 116 can also be 20 mm.

[0113] The distance H4 between the second end face 127 of the hub 125 near the opening 116 and the end of the mounting groove 112 with the opening 116 can also be 50 mm.

[0114] This embodiment provides a shell assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0115] like Figure 4 , Figure 5 and Figure 6 As shown, the fan blade 122 extends obliquely relative to the axial direction of the rotating shaft 121.

[0116] In this embodiment, the fan blade 122 extends obliquely relative to the axial direction of the rotating shaft 121. After the airflow entering the mounting groove 112 through the opening 116 of the mounting groove 112 comes into contact with the fan blade 122, it will apply a tangential force to the fan blade 122. The direction of the tangential force is the same as the tangential direction of the fan blade 122, thereby driving the fan blade 122 to rotate and improving the smoothness of the fan blade 122 when starting.

[0117] This embodiment provides a shell assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0118] like Figure 1 and Figure 13 As shown, in the axial direction of the rotating shaft 121, the inner wall of the groove 123 extends in an arc shape, and / or the outer wall of the support portion 114 extends in an arc shape.

[0119] In this embodiment, the inner wall of the groove 123 extends in an arc along the axial direction of the rotating shaft 121, and / or the outer wall of the support portion 114 extends in an arc, reducing the contact area between the support portion 114 and the inner wall of the groove 123, reducing the friction between the support portion 114 and the inner wall of the groove 123, and further improving the smoothness of the first fan 120 during rotation.

[0120] Optionally, the support portion 114 mates with the groove 123, with the support portion 114 and the groove 123 making point-to-point contact to prevent the fan blade 122 from failing to start due to increased friction. The groove 123 and the support portion 114 both have arc-shaped cross-sections in the vertical direction.

[0121] This embodiment provides a shell assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0122] like Figure 1 and Figure 13 As shown, the radial direction of groove 123 ( Figure 1 The area of ​​the cross section (in the direction indicated by arrow B) increases from the side of the groove 123 near the opening 116 to the side away from the opening 116; or the radial direction of the support 114 (the radial direction of the support 114 is the same as the radial direction of the groove 123, i.e.) Figure 1 The area of ​​the cross section (in the direction indicated by the middle arrow B) increases from the side of the support 114 near the opening 116 to the side away from the opening 116.

[0123] In this embodiment, the radial cross-sectional area of ​​the groove 123 increases from the side of the groove 123 near the opening 116 to the side away from the opening 116, so that the inner wall of the groove 123 can cooperate with the support 114 to guide the first fan 120 during assembly, thereby simplifying the assembly process of the first fan 120; and the radial cross-sectional area of ​​the groove 123 increases from the side of the groove 123 near the opening 116 to the side away from the opening 116, so that after the first fan 120 is displaced, the groove 123 and the support 114 can also make the first fan 120 easier to reset, thereby ensuring the smoothness of the first fan 120 when it restarts.

[0124] The radial cross-sectional area of ​​the support portion 114 increases from the side of the support portion 114 near the opening 116 to the side away from the opening 116, so that the outer wall of the support portion 114 can cooperate with the groove 123 to guide the first fan 120 during assembly, thereby simplifying the assembly process of the first fan 120. Furthermore, the radial cross-sectional area of ​​the support portion 114 increases from the side of the support portion 114 near the opening 116 to the side away from the opening 116. After the first fan 120 is displaced, the groove 123 and the support portion 114 can also make it easier for the first fan 120 to reset, thereby ensuring the smoothness of the first fan 120 when it restarts.

[0125] This embodiment provides a shell assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0126] like Figure 1 and Figure 13As shown, at any position along the axial direction of the rotating shaft 121, the diameter D3 of the support portion 114 is smaller than the inner diameter D4 of the groove 123.

[0127] In this embodiment, at any position along the axial direction of the rotating shaft 121, the diameter D3 of the support portion 114 is smaller than the inner diameter D4 of the groove 123, so that the top end of the support portion 114 contacts the inner wall of the groove 123, and the area of ​​the support portion 114 other than the top end does not contact the inner wall of the groove 123, thereby reducing the friction between the support portion 114 and the groove 123 and improving the smoothness of the rotation of the first fan 120.

[0128] Specifically, in the horizontal direction, the inner diameter of the groove 123 section needs to be larger than the outer diameter of the support section 114.

[0129] In one embodiment of this utility model, such as Figure 14 As shown, a cooking appliance is provided, including a shell assembly 100 as described in any of the above embodiments. Therefore, the cooking appliance has all the beneficial effects of the shell assembly 100 as described in any of the above embodiments, which will not be repeated here.

[0130] The cooking appliance also includes a reflector 200, a fresh air duct 300, a second fan 400, and a flow guide channel; the housing assembly 100 is provided with a cooking cavity 150; the reflector 200 is disposed inside the housing assembly 100, located at the top of the cooking cavity 150; one end of the fresh air duct 300 is connected to the cooking cavity 150, and the other end extends towards the first fan 120; the second fan 400 is disposed on the side of the reflector 200 near the cooking cavity 150; the flow guide channel 510 is along the circumference of the second fan 400. Figure 14 Arranged in the direction indicated by the middle arrow F, the air guide channel 510 is connected to the fresh air duct 300.

[0131] The cooking appliance also includes a baffle plate 500, which is connected to a reflector 200. The baffle plate 500 and the reflector 200 together form a baffle channel 510.

[0132] Specifically, after the second fan 400 is turned on, a negative pressure is formed in the air guide channel 510, which in turn causes a negative pressure to be formed in the fresh air duct 300 connected to it. The fresh air duct 300 draws in external air to flow through the first fan 120 and enters the fresh air duct, which oxygenates the cooking cavity 150. At the same time, the first fan 120 is blown by the external air, which can indicate the air intake status.

[0133] Optionally, the cooking appliance is an air fryer.

[0134] The cooking appliance also includes a support and a reflector 200. The support is located on top of the cooking cavity 150, and the reflector 200 is connected to the support.

[0135] The cooking appliance also includes a motor, a second fan 400, and a heating element. The motor is mounted on a bracket, and its output shaft passes through a reflector 200 and extends into the cooking cavity 150. The second fan 400 is positioned on the side of the reflector 200 closest to the cooking cavity 150. The heating element is arranged around the second fan 400.

[0136] When the cooking appliance is cooking food, the second fan 400 rotates, driving the airflow in the cooking cavity 150. The airflow is heated after passing through the heating element, thereby cooking the food in the cooking cavity 150.

[0137] The cooking appliance also includes a deflector plate 500, an air inlet on the reflector 200, which is connected to the fresh air duct 300, the deflector plate 500 and the reflector 200 are connected, and the deflector plate 500 and the reflector 200 form a deflection channel 510, which is arranged around the second fan 400, and the deflection channel 510 is connected to the fresh air duct 300 through the air inlet.

[0138] The second fan 400 rotates, driving airflow through the guide channel 510. The airflow in the guide channel 510 forms a negative pressure area at the air inlet, thereby driving the gas outside the cooking appliance to enter the cooking chamber 150 through the fresh air duct 300.

[0139] Optionally, the shell assembly 100 is used for a cooking appliance having a cooking cavity 150, with the shell assembly 100 located on top of the cooking cavity 150. The shell assembly 100 also includes a fresh air duct 300, one end of which is connected to the mounting slot 112, and the other end of which is connected to the cooking cavity 150, allowing air from outside the cooking appliance to enter the cooking cavity 150 through the mounting slot 112 and the fresh air duct 300.

[0140] In the claims, description, and accompanying drawings of this utility model, the term "plural" refers to two or more objects. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description process, and are not intended to indicate or imply that the device or element referred to must have the described specific orientation, or be constructed and operated in a specific orientation. Therefore, these descriptions should not be construed as limitations on this utility model. The terms "connect," "install," "fix," etc., should be interpreted broadly. For example, "connect" can be a fixed connection between multiple objects, a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects or an indirect connection between multiple objects through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood based on the specific circumstances described above.

[0141] In the claims, description, and drawings of this utility model, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In the claims, description, and drawings of this utility model, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0142] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A shell assembly, characterized in that, include: The main body is provided with a support portion; A first fan includes a shaft and multiple fan blades arranged circumferentially along the shaft. A groove is provided at a first end of the shaft, and at least a portion of the support is located within the groove and in contact with the shaft. The second end of the shaft is a free end.

2. The shell assembly according to claim 1, characterized in that, The second end of the rotating shaft is provided with a protrusion that extends away from the rotating shaft.

3. The shell assembly according to claim 2, characterized in that, The main body is provided with a mounting groove, one end of which has an opening. The support portion is disposed within the mounting groove. The shell assembly further includes: A cover body, wherein the cover body is disposed on one end of the mounting groove having the opening; In the axial direction of the rotating shaft, the distance between the protrusion and the cover is less than the depth of the groove.

4. The shell assembly according to claim 3, characterized in that, The first fan also includes: A hub, which is annular, extends circumferentially along the plurality of fan blades and is connected to the plurality of fan blades.

5. The shell assembly according to claim 4, characterized in that, In the axial direction of the shaft, the fan blades extend from the side of the hub near the opening to the side of the hub away from the opening.

6. The shell assembly according to claim 4, characterized in that, The inner diameter of the mounting groove is larger than the outer diameter of the wheel hub.

7. The shell assembly according to claim 3, characterized in that, The radial cross-sectional area of ​​the groove increases from the side of the groove closest to the opening to the side furthest from the opening; or The area of ​​the radial cross section of the support increases from the side of the support closer to the opening to the side farther away from the opening.

8. The shell assembly according to any one of claims 1 to 7, characterized in that, The fan blades extend at an axial angle relative to the rotating shaft; or Along the axial direction of the rotating shaft, the inner wall of the groove extends in an arc shape, and / or the outer wall of the support extends in an arc shape.

9. The shell assembly according to any one of claims 1 to 7, characterized in that, At any position along the axial direction of the shaft, the diameter of the support is smaller than the inner diameter of the groove.

10. A cooking utensil, characterized in that, include: The shell assembly according to any one of claims 1 to 9, wherein the shell assembly is provided with a cooking cavity; A reflector, which is disposed within the shell assembly and located at the top of the cooking cavity; The fresh air duct is connected at one end to the cooking cavity and at the other end to the first fan. A second fan is disposed on the side of the reflector near the cooking cavity; A flow guide channel is arranged circumferentially along the second fan and is connected to the fresh air duct.

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