Stirring assembly and cooking appliance having the same

Abstract

The application provides a stirring assembly and a cooking utensil with the same. The stirring assembly comprises a rotating drum, stirring blades, a gear set and a sealing assembly. The fixed gear of the gear set comprises a fixed shaft seat and a gear cylinder. The fixed shaft seat is provided with a rotation-stopping structure between the fixed shaft seat and the inner pot. The upper end surface of the gear cylinder is provided with a horizontally arranged gear ring. The movable gear of the gear set is arranged on the rotating shaft of the stirring blades and is engaged with the gear ring. The fixed gear has a through hole penetrating through the fixed shaft seat and the gear cylinder in the vertical direction. The transmission shaft of the rotating drum is arranged in the through hole. The sealing assembly comprises a first sealing ring. The outer ring of the first sealing ring is in close contact with the hole wall of the through hole. The inner ring of the first sealing ring is in close contact with the outer side wall of the transmission shaft. Through the technical scheme provided in the application, the problem that the sealing effect of the stirring assembly in the related art needs to be improved can be solved.

Description

Technical Field

[0001] This invention relates to the field of small household appliance technology, and more specifically, to a stirring assembly and a cooking appliance having the same. Background Technology

[0002] The cooking appliance includes an inner pot and an openable lid mounted on the inner pot. Food can be cooked by placing it into the cooking cavity of the inner pot, and the lid can be placed on the inner pot to seal the cooking cavity.

[0003] In related technologies, the inner pot is equipped with a stirring component inside its cooking cavity. During the cooking process, the stirring component can be used to stir the food, which can improve the cooking effect.

[0004] However, there is room for improvement in the sealing performance of the stirring components in the relevant technologies. Summary of the Invention

[0005] The present invention provides a stirring assembly and a cooking appliance having the same, in order to solve the problem that there is room for improvement in the sealing effect of stirring assemblies in related technologies.

[0006] According to one aspect of the present invention, a stirring assembly is provided, disposed in an inner pot. The stirring assembly includes: a rotating drum rotatably disposed in the inner pot about its vertical axis, the rotating drum having a mounting cavity, and a downwardly extending drive shaft disposed on the top wall of the rotating drum; stirring blades, including a rotating shaft and blades disposed on the rotating shaft, a shaft hole being provided through the side wall of the rotating drum, the rotating shaft being rotatably disposed in the shaft hole; a gear set located in the mounting cavity, the gear set including a fixed gear and a moving gear, the fixed gear including a fixed shaft seat and a gear cylinder disposed on the fixed shaft seat, an anti-rotation structure being provided between the fixed shaft seat and the inner pot, a horizontally arranged gear ring being provided on the upper end face of the gear cylinder, the moving gear being disposed on the rotating shaft and meshing with the gear ring, the fixed gear having a through hole penetrating vertically through the fixed shaft seat and the gear cylinder, the drive shaft being disposed in the through hole; and a sealing assembly including a first sealing ring, the outer ring of the first sealing ring being in contact with the wall of the through hole, and the inner ring of the first sealing ring being in contact with the outer side wall of the drive shaft.

[0007] Applying the technical solution of this invention, when the drum rotates, the drum drives the blades to revolve around its vertical axis via the rotating shaft. Because an anti-rotation structure is provided between the fixed gear and the inner pot, the fixed gear remains stationary relative to the inner pot, while the moving gear rotates around the gear ring of the fixed gear. The torque of the drum is transmitted to the rotating shaft through the cooperation of the fixed and moving gears. Thus, the rotating shaft follows the drum in its circumferential revolution while simultaneously rotating horizontally, thereby enabling the blades to rotate horizontally. This allows for three-dimensional stirring of the food inside the inner pot using the blades. Furthermore, by providing a first sealing ring between the wall of the through hole of the fixed gear and the outer wall of the drive shaft, the gap between the through hole wall and the outer wall of the drive shaft is sealed. This achieves both the revolution and rotation of the stirring blades in the revolution and rotation transmission structure, while simultaneously sealing the transmission structure of the stirring assembly, thereby improving the sealing effect of the stirring assembly. Furthermore, since the fixed gear is divided into a fixed shaft seat and a gear cylinder, and the first sealing ring is set at the fixed shaft seat, only the structure at the fixed shaft seat needs to be designed to install the first sealing ring. There is no need to change the structure of the gear cylinder used to cooperate with the drive gear. Under the premise of ensuring the strength of the transmission structure of the fixed gear, the assembly space at the fixed shaft seat can be fully utilized, thereby achieving sealing of the stirring assembly while ensuring the miniaturization of the stirring assembly.

[0008] Furthermore, the sealing assembly also includes a second sealing ring. The outer ring of the second sealing ring fits against the cavity wall of the mounting cavity, and the inner ring of the second sealing ring fits against the outer wall of the fixed shaft seat. By providing a second sealing ring between the cavity wall of the mounting cavity of the rotating drum and the outer wall of the fixed shaft seat of the fixed gear, the gap between the cavity wall of the mounting cavity and the outer wall of the fixed shaft seat can be sealed, thereby improving the sealing effect of the stirring assembly.

[0009] Furthermore, the sealing assembly also includes a first bearing, the inner ring of which is fitted onto the outer wall of the drive shaft, and the outer ring of which is positioned corresponding to the wall of the through hole. With this structure, since the first bearing is positioned between the outer wall of the drive shaft and the wall of the through hole, the sealing effect of the first sealing ring is ensured while allowing the drive shaft to rotate smoothly relative to the fixed gear.

[0010] Furthermore, the sealing assembly also includes a second bearing, the inner ring of which is fitted onto the outer wall of the fixed shaft seat, and the outer ring of which is positioned corresponding to the cavity wall of the mounting cavity. By placing the second bearing between the outer wall of the fixed shaft seat and the cavity wall of the mounting cavity, the sealing effect of the second sealing ring is ensured while allowing the rotating drum to rotate smoothly relative to the fixed gear.

[0011] Furthermore, the through hole includes a first through hole penetrating the fixed shaft seat and a second through hole penetrating the gear cylinder. A first limiting boss is provided on the wall of the first through hole. The lower end of the first sealing ring abuts against the upper surface of the first limiting boss, the lower end of the first bearing abuts against the upper end of the first sealing ring, and the lower end of the gear cylinder extends into the first through hole and abuts against the upper end of the first bearing. With the above structure, during the assembly of the fixed gear, the first sealing ring, the first bearing, and the gear cylinder are sequentially installed into the fixed shaft seat. On the one hand, the first limiting boss provides installation positioning for the first sealing ring, the first bearing, and the gear cylinder, improving the assembly accuracy of the stirring assembly. On the other hand, by setting the first sealing ring, the first bearing, and the gear cylinder from bottom to top in the first through hole, the internal space of the first through hole is fully utilized, ensuring the structural strength of the fixed gear while achieving miniaturized sealed rotation of the stirring assembly.

[0012] Furthermore, the rotating drum includes an upper body and a lower body connected to the lower end of the upper body. A mounting cavity is located in the upper body, a drive shaft is located on the top wall of the upper body, a shaft hole is located on the side wall of the upper body, and the lower end of a fixed gear extends into the lower body. This split-structure rotating drum improves the ease of assembly when assembling the stirring assembly. Furthermore, because the drive shaft is located on the top wall of the upper body, and the lower body is connected to the lower end of the upper body, the drive shaft, upper body, and lower body rotate coaxially, with the axis of rotation of the drive shaft as the center of rotation, thus achieving the revolution of the stirring assembly.

[0013] Furthermore, a second limiting boss is provided on the outer wall of the fixed shaft seat. The lower end of the second sealing ring abuts against the upper surface of the lower seat body, and the upper end of the second sealing ring abuts against the lower end of the second bearing. The second limiting boss rests on the upper end of the second bearing. With the above structure, during assembly, the fixed gear, the second bearing, and the second sealing ring are sequentially installed into the mounting cavity. On the one hand, the second limiting boss provides installation positioning for the second bearing and the second sealing ring, improving the assembly accuracy of the stirring assembly. On the other hand, by arranging the fixed gear, the second bearing, and the second sealing ring from top to bottom in the mounting cavity, the internal space of the mounting cavity is fully utilized, ensuring the structural strength of the fixed gear while achieving miniaturized sealed rotation of the stirring assembly.

[0014] Furthermore, the gear cylinder includes a first connecting plate and a first cylinder body connected to each other, with the first cylinder body located below the first connecting plate and the gear ring disposed on the upper surface of the first connecting plate; the fixed shaft seat includes a second connecting plate and a second cylinder body connected to each other, with the second cylinder body located below the second connecting plate, the first cylinder body passing through the second cylinder body, and the first connecting plate located above the second connecting plate and connected to it. The fixed shaft seat includes a second connecting plate and a second cylinder body connected to each other, with the second cylinder body located below the second connecting plate, the first cylinder body passing through the second cylinder body, and the first connecting plate located above the second connecting plate and connected to it. Using the above structure, by providing the first connecting plate and the second connecting plate, the connection between the gear cylinder and the fixed shaft seat is facilitated through the first connecting plate and the second connecting plate.

[0015] Furthermore, the first connecting plate has a first connecting hole, and the second connecting plate has a second connecting hole corresponding to the first connecting hole. Fasteners are connected to the first and second connecting holes respectively. Using this structure, the gear cylinder and the fixed shaft seat can be fixedly connected by fasteners connected to the first and second connecting holes respectively, ensuring that the fixed gear as a whole remains stationary relative to the inner pot. Furthermore, using fasteners simplifies the assembly structure and improves assembly efficiency. And / or, the lower surface of the first connecting plate is provided with a positioning post, and the second connecting plate is provided with a positioning hole, with the positioning post passing through the positioning hole. Using this structure, before installing the fasteners, the positioning post can be inserted into the positioning hole to ensure a relatively static position between the gear cylinder and the fixed shaft seat, facilitating fastener installation.

[0016] Furthermore, the sealing assembly also includes a third sealing ring and a third bearing. The inner rings of both the third sealing ring and the third bearing are fitted onto the outer wall of the rotating shaft, while the outer rings of both are fitted against the wall of the shaft hole. By providing a third sealing ring and a third bearing between the rotating shaft and the shaft hole, the gap between them can be sealed, improving the sealing effect on the transmission structure and ensuring smooth rotation of the rotating shaft relative to the shaft hole.

[0017] Furthermore, the drive shaft has a clearance hole, through which the rotating shaft passes. The stirring assembly also includes a fourth bearing, the inner ring of which is fitted onto the outer wall of the rotating shaft, and the outer ring of which fits against the wall of the clearance hole. With this structure, by placing the fourth bearing between the clearance hole and the rotating shaft, the smooth rotation of the rotating shaft relative to the clearance hole is ensured, while the axial stability of the rotating shaft's horizontal rotation is increased. The axis of rotation is the common axis of the clearance hole and the shaft hole. The moving gear is located on the side of the drive shaft furthest from the shaft hole. This arrangement enables rotation in the top-to-bottom direction... When the drum rotates clockwise, the rotation direction of the shaft is counterclockwise from the end furthest from the shaft hole to the end closest to the shaft hole. When the drum rotates counterclockwise from top to bottom, the rotation direction of the shaft is clockwise from the end furthest from the shaft hole to the end closest to the shaft hole. That is, the rotation direction of the stirring blades is opposite to the rotation direction of the drum (clockwise / counterclockwise), which makes it easier for the stirring blades to turn the food, and the food turns more frequently in the cooking cavity. The food is heated evenly, which can further improve the three-dimensional stirring effect of the stirring components on the food. Furthermore, the aforementioned structure can enhance the torque transmitted by the moving gear, thereby improving the stirring performance. The lower end of the fixed shaft seat has an anti-rotation hole, and the inner pot is provided with an anti-rotation boss that extends into the anti-rotation hole. The anti-rotation boss and the anti-rotation hole together form an anti-rotation structure, which can keep the fixed gear stationary relative to the inner pot and facilitate the disassembly, maintenance, and replacement of the stirring components. The outer wall of the rotating drum is also provided with fixed blades, the height of which is lower than that of the stirring blades. When the rotating drum rotates, the fixed blades revolve around the vertical axis of the drum, thereby stirring the food at the bottom and improving the stirring performance.

[0018] According to another aspect of the present invention, a cooking appliance is provided, comprising: an inner pot having a driving member; and a stirring assembly disposed within the inner pot, wherein the driving member is driven to a drive shaft of the stirring assembly, and the stirring assembly is the stirring assembly provided above. Therefore, this cooking appliance can also achieve three-dimensional stirring of food using blades, improving the stirring effect. Furthermore, by using a first sealing ring to seal the gap between the wall of the through hole and the outer wall of the drive shaft, and by using a second sealing ring to seal the gap between the cavity wall of the mounting cavity and the outer wall of the fixed shaft seat, food inside the cooking cavity will not enter the interior of the stirring assembly. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0020] Figure 1 A cross-sectional view of the stirring assembly provided in an embodiment of the present invention is shown;

[0021] Figure 2 It shows Figure 1 A magnified view of point A in the image;

[0022] Figure 3 An exploded view of the stirring assembly provided in an embodiment of the present invention is shown;

[0023] Figure 4 An exploded view of the fixed gear, first sealing ring, and first bearing of the stirring assembly provided in an embodiment of the present invention is shown.

[0024] Figure 5 A side view of the fixed gear of the stirring assembly provided in an embodiment of the present invention is shown;

[0025] Figure 6 Another axle view of the fixed gear of the stirring assembly provided in an embodiment of the present invention is shown;

[0026] Figure 7 The image shows an isometric view of the upper seat of the rotating drum of the stirring assembly provided in an embodiment of the present invention;

[0027] Figure 8 An axonometric view of the stirring blades of the stirring assembly provided in an embodiment of the present invention is shown.

[0028] The above figures include the following reference numerals:

[0029] 10. Rotary drum; 11. Mounting cavity; 12. Drive shaft; 121. Clearance hole; 13. Shaft hole; 14. Upper seat body; 15. Lower seat body; 16. Fixed blade; 17. Handle;

[0030] 20. Agitator blade; 21. Shaft; 22. Blade;

[0031] 30. Gear set; 31. Fixed gear; 311. Fixed shaft seat; 3111. Second limiting boss; 3112. Second connecting plate; 3113. Second connecting hole; 3114. Positioning hole; 3115. Second cylinder; 3116. Anti-rotation hole; 3117. Circumvention groove; 312. Gear cylinder; 3121. Gear ring; 3122. First connecting plate; 3123. First connecting hole; 3124. Positioning pin; 3125. First cylinder; 32. Moving gear; 33. Through hole; 331. First through hole; 3311. First limiting boss; 332. Second through hole;

[0032] 40. Sealing assembly; 41. First sealing ring; 42. Second sealing ring; 43. First bearing; 44. Second bearing; 45. Third sealing ring; 46. Third bearing;

[0033] 60. Fourth bearing; 70. Stirring assembly; 80. Anti-rotation structure. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] like Figures 1 to 8 As shown, this embodiment of the invention provides a stirring assembly disposed in an inner pot. The stirring assembly includes a rotating drum 10, stirring blades 20, a gear set 30, and a sealing assembly 40. The rotating drum 10 is rotatably disposed in the inner pot about its vertical axis. The rotating drum 10 has a mounting cavity 11. A downwardly extending drive shaft 12 is provided on the top wall of the rotating drum 10. The stirring blades 20 include a rotating shaft 21 and blades 22 disposed on the rotating shaft 21. A shaft hole 13 is provided through the side wall of the rotating drum 10, and the rotating shaft 21 is rotatably disposed in the shaft hole 13. The gear set 30 is located in the mounting cavity 11. The gear set 30 includes a fixed gear 31 and a moving gear 32. The fixed gear 31 includes a fixed shaft seat 311. The gear cylinder 312 is mounted on the fixed shaft seat 311. An anti-rotation structure 80 is provided between the fixed shaft seat 311 and the inner pot. A horizontally arranged gear ring 3121 is provided on the upper end face of the gear cylinder 312. The moving gear 32 is mounted on the rotating shaft 21 and meshes with the gear ring 3121. The fixed gear 31 has a through hole 33 that penetrates the fixed shaft seat 311 and the gear cylinder 312 vertically. The transmission shaft 12 passes through the through hole 33. The sealing assembly 40 includes a first sealing ring 41. The outer ring of the first sealing ring 41 fits against the hole wall of the through hole 33, and the inner ring of the first sealing ring 41 fits against the outer side wall of the transmission shaft 12.

[0036] Applying the technical solution of this invention, when the rotating drum 10 rotates, the rotating drum 10 drives the blades 22 to revolve around its vertical axis through the rotating shaft 21. Since the fixed gear 31 is provided with an anti-rotation structure 80 between it and the inner pot, the fixed gear 31 is fixed relative to the inner pot, and the moving gear 32 will rotate around the gear ring 3121 of the fixed gear 31. The torque of the rotating drum 10 is transmitted to the rotating shaft 21 by the cooperation of the fixed gear 31 and the moving gear 32. Thus, the rotating shaft 21 revolves around the rotating drum 10 in the circumferential direction while rotating in the horizontal direction, thereby realizing the rotation of the blades 22 in the horizontal direction. In this way, the blades 22 can be used to stir the food in the inner pot in three dimensions. Furthermore, by setting a first sealing ring 41 between the hole wall of the through hole 33 of the fixed gear 31 and the outer wall of the transmission shaft 12, the gap between the hole wall of the through hole 33 and the outer wall of the transmission shaft 12 is sealed. This achieves a transmission structure that combines revolution and rotation of the stirring blade 20, while simultaneously sealing the transmission structure of the stirring assembly, thereby improving the sealing effect of the stirring assembly. Moreover, since the fixed gear 31 is divided into a fixed shaft seat 311 and a gear cylinder 312, setting the first sealing ring 41 at the fixed shaft seat 311 only requires designing the structure of the fixed shaft seat 311 to install the first sealing ring 41. There is no need to modify the structure of the gear cylinder 312, which is used for transmission with the moving gear 32. This allows for full utilization of the assembly space at the fixed shaft seat 311 while ensuring the strength of the transmission structure of the fixed gear 31, thus achieving sealing of the stirring assembly while maintaining its miniaturization.

[0037] It should be noted that three-dimensional stirring refers to the following: the stirring blades 20 stir the food in the cooking cavity of the inner pot in a circumferential direction, and the stirring blades 20 also tumble and stir the food in the cooking cavity in a vertical direction. This results in the food being tumbled both circumferentially and vertically within the cooking cavity, creating a three-dimensional tumbling effect. In other words, while ensuring the circumferential rotation of the stirring blades 20, a secondary three-dimensional tumbling is achieved on the sides of the stirring blades 20. The lateral tumbling is a displacement-like longitudinal circular motion that occurs while the bottom rotates, resulting in a parabolic motion rather than a simple circular motion, thus achieving true three-dimensional tumbling.

[0038] In this embodiment, the moving gear 32 is fitted onto the non-circular mounting section of the rotating shaft 21 through a non-circular hole, thereby achieving synchronous rotation between the moving gear 32 and the rotating shaft 21.

[0039] In this embodiment, both the gear ring 3121 and the moving gear 32 are bevel gears. When the moving gear 32 rotates around the gear ring 3121 of the fixed gear 31, since the gear ring 3121 remains fixed relative to the inner pot along with the fixed gear 31, the moving gear 32 revolves around the vertical axis of the rotating cylinder 10 relative to the inner pot. Furthermore, since the moving gear 32 meshes with the gear ring 3121, and both the gear ring 3121 and the moving gear 32 are bevel gears, the moving gear 32 rotates around its horizontal axis. Moreover, since the moving gear 32 is sleeved on the rotating shaft 21, and the moving gear 32 cannot rotate relative to the rotating shaft 21, the rotating shaft 21 revolves around the vertical axis of the rotating cylinder 10 relative to the inner pot while simultaneously rotating horizontally.

[0040] like Figure 2 As shown, the sealing assembly 40 also includes a second sealing ring 42. The outer ring of the second sealing ring 42 fits against the cavity wall of the mounting cavity 11, and the inner ring of the second sealing ring 42 fits against the outer wall of the fixed shaft seat 311. By providing the second sealing ring 42 between the cavity wall of the mounting cavity 11 of the rotating drum 10 and the outer wall of the fixed shaft seat 311 of the fixed gear 31, the gap between the cavity wall of the mounting cavity 11 and the outer wall of the fixed shaft seat 311 can be sealed, thereby sealing the transmission structure of the stirring assembly and improving the sealing effect of the stirring assembly.

[0041] like Figures 1 to 4 As shown, the sealing assembly 40 also includes a first bearing 43. The inner ring of the first bearing 43 is fitted onto the outer wall of the drive shaft 12, and the outer ring of the first bearing 43 is disposed corresponding to the wall of the through hole 33. With the above structure, since the first bearing 43 is disposed between the outer wall of the drive shaft 12 and the wall of the through hole 33, the sealing effect of the first sealing ring 41 is ensured while allowing the drive shaft 12 to rotate smoothly relative to the fixed gear 31.

[0042] like Figures 1 to 4 As shown, the sealing assembly 40 also includes a second bearing 44. The inner ring of the second bearing 44 is fitted onto the outer wall of the fixed shaft seat 311, and the outer ring of the second bearing 44 is disposed corresponding to the cavity wall of the mounting cavity 11. By placing the second bearing 44 between the outer wall of the fixed shaft seat 311 and the cavity wall of the mounting cavity 11, the sealing effect of the second sealing ring 42 is ensured while allowing the rotating drum 10 to rotate smoothly relative to the fixed gear 31.

[0043] It should be noted that the inner ring of the first bearing 43 is fitted onto the outer wall of the transmission shaft 12, and the outer ring of the first bearing 43 corresponds to the wall of the through hole 33, including the following two structures: The first is an interference fit between the inner ring of the first bearing 43 and the outer wall of the transmission shaft 12, and an interference fit between the outer ring of the first bearing 43 and the wall of the through hole 33; the second is a clearance fit between the inner ring of the first bearing 43 and the outer wall of the transmission shaft 12, and a clearance fit between the outer ring of the first bearing 43 and the wall of the through hole 33. When the first bearing 43 adopts the first structure, the assembly of the first bearing 43 is more stable, making it less prone to shaking when the transmission shaft 12 rotates. When the first bearing 43 adopts the second structure, there is a clearance between the fixed gear 31 and the transmission shaft 12 and the first bearing 43. This clearance provides an assembly clearance for the first bearing 43 during assembly, thus facilitating its installation. The installation method of the second bearing 44 is similar to that of the first bearing 43, and will not be described further here.

[0044] like Figures 1 to 4 As shown, the through hole 33 includes a first through hole 331 penetrating the fixed shaft seat 311 and a second through hole 332 penetrating the gear cylinder 312. A first limiting boss 3311 is provided on the hole wall of the first through hole 331. The lower end of the first sealing ring 41 abuts against the upper surface of the first limiting boss 3311. The lower end of the first bearing 43 abuts against the upper end of the first sealing ring 41. The lower end of the gear cylinder 312 extends into the first through hole 331 and abuts against the upper end of the first bearing 43. With the above structure, during the assembly of the fixed gear 31, the first sealing ring 41, the first bearing 43, and the gear cylinder 312 are sequentially installed into the fixed shaft seat 311. On the one hand, the first limiting boss 3311 provides installation positioning for the first sealing ring 41, the first bearing 43, and the gear cylinder 312, improving the assembly accuracy of the stirring assembly. On the other hand, by setting the first sealing ring 41, the first bearing 43, and the gear cylinder 312 from bottom to top in the first through hole 331, the internal space of the first through hole 331 is fully utilized, ensuring the structural strength of the fixed gear 31 while realizing the miniaturized sealed rotation of the stirring assembly.

[0045] The first limiting boss 3311 has an annular structure, and the lower end of the drive shaft 12 passes through the first limiting boss 3311. By adopting the aforementioned annular structure, the lower end of the first sealing ring 41 contacts the first limiting boss 3311 with an annular surface. Under the same impact force, this increases the contact area, reduces the pressure, and thus improves the structural reliability of the first limiting boss 3311, ensuring the sealing effect of the stirring assembly and extending its service life.

[0046] When the moving gear 32 rotates around the gear ring 3121, by extending the lower end of the gear cylinder 312 into the first through hole 331, on the one hand, the force on the gear cylinder 312 can be transmitted to the fixed shaft seat 311, which provides sufficient support for the gear cylinder 312 and improves transmission stability; on the other hand, it avoids the gear cylinder 312 from being subjected to excessive shear force, thereby improving the structural reliability of the gear cylinder 312. Specifically, the lower end of the gear cylinder 312 refers to the part below half the height of the gear cylinder 312.

[0047] like Figures 1 to 3 as well as Figure 7 As shown, the rotating drum 10 includes an upper body 14 and a lower body 15 connected to the lower end of the upper body 14. A mounting cavity 11 is disposed on the upper body 14, a drive shaft 12 is disposed on the top wall of the upper body 14, a shaft hole 13 is disposed on the side wall of the upper body 14, and the lower end of the fixed gear 31 extends into the lower body 15. The rotating drum 10 with the above-described split structure improves the ease of assembly when assembling the stirring assembly. Furthermore, since the drive shaft 12 is disposed on the top wall of the upper body 14, and the lower body 15 is connected to the lower end of the upper body 14, the drive shaft 12, the upper body 14, and the lower body 15 rotate coaxially, with the axis of rotation of the drive shaft 12 as the center of rotation, thereby realizing the revolution of the stirring assembly.

[0048] like Figure 1 , Figure 2 , Figure 5 as well as Figure 6 As shown, a second limiting boss 3111 is provided on the outer wall of the fixed shaft seat 311. The lower end of the second sealing ring 42 abuts against the upper surface of the lower seat body 15, and the upper end of the second sealing ring 42 abuts against the lower end of the second bearing 44. The second limiting boss 3111 is mounted on the upper end of the second bearing 44. With the above structure, during the assembly process, the fixed gear 31, the second bearing 44, and the second sealing ring 42 are sequentially installed into the mounting cavity 11. On the one hand, the second limiting boss 3111 provides installation positioning for the second bearing 44 and the second sealing ring 42, improving the assembly accuracy of the stirring assembly. On the other hand, by arranging the fixed gear 31, the second bearing 44, and the second sealing ring 42 from top to bottom in the mounting cavity 11, the internal space of the mounting cavity 11 is fully utilized, ensuring the structural strength of the fixed gear 31 while realizing the miniaturized sealed rotation of the stirring assembly.

[0049] like Figures 4 to 6As shown, the gear cylinder 312 includes a first connecting plate 3122 and a first cylinder 3125 connected to each other. The first cylinder 3125 is located below the first connecting plate 3122, and the gear ring 3121 is disposed on the upper surface of the first connecting plate 3122. The fixed shaft seat 311 includes a second connecting plate 3112 and a second cylinder 3115 connected to each other. The second cylinder 3115 is located below the second connecting plate 3112, and the first cylinder 3125 passes through the second cylinder 3115. The first connecting plate 3122 is located above the second connecting plate 3112 and is connected to the second connecting plate 3112. With the above structure, by setting the first connecting plate 3122 and the second connecting plate 3112, it is convenient to realize the connection between the gear cylinder 312 and the fixed shaft seat 311 through the first connecting plate 3122 and the second connecting plate 3112.

[0050] like Figure 2 As shown, the first connecting plate 3122 has a first connecting hole 3123, and the second connecting plate 3112 has a second connecting hole 3113 corresponding to the first connecting hole 3123. Fasteners are connected to the first connecting hole 3123 and the second connecting hole 3113 respectively. With the above structure, the gear cylinder 312 and the fixed shaft seat 311 can be fixedly connected by fasteners connected to the first connecting hole 3123 and the second connecting hole 3113 respectively, ensuring that the fixed gear 31 is fixed relative to the inner pot. Furthermore, using fasteners can simplify the assembly structure and improve assembly efficiency.

[0051] like Figure 2 As shown, a positioning post 3124 is provided on the lower surface of the first connecting plate 3122, and a positioning hole 3114 is provided on the second connecting plate 3112, with the positioning post 3124 passing through the positioning hole 3114. Using this structure, before installing fasteners, the positioning post 3124 passing through the positioning hole 3114 ensures a relatively static position between the gear cylinder 312 and the fixed shaft seat 311, facilitating fastener installation.

[0052] In this embodiment, multiple first connecting holes 3123 and multiple second connecting holes 3113 are arranged circumferentially along the fixed gear 31. The multiple first connecting holes 3123 and multiple second connecting holes 3113 are arranged one-to-one to improve the connection firmness. The second connecting plate 3112 is provided with multiple positioning holes 3114 circumferentially to improve the assembly stability during pre-assembly.

[0053] like Figure 5 and Figure 6The outer wall of the fixed shaft seat 311 is provided with clearance grooves 3117. Multiple clearance grooves 3117 are arranged circumferentially along the outer wall of the fixed shaft seat 3111. Some clearance grooves 3117 are arranged below multiple second connecting holes 3113, and the remaining clearance grooves 3117 are arranged below multiple positioning holes 3114. The clearance grooves 3117 arranged below the second connecting holes 3113 provide space for the installation of fasteners, and the clearance grooves 3117 arranged below the positioning holes 3114 provide space for the installation of positioning pins 3124, which facilitates the assembly of the gear cylinder 312 and the fixed shaft seat 311.

[0054] like Figure 1 As shown, the sealing assembly 40 also includes a third sealing ring 45 and a third bearing 46. The inner rings of the third sealing ring 45 and the third bearing 46 are both fitted onto the outer wall of the rotating shaft 21, and the outer rings of the third sealing ring 45 and the third bearing 46 are both in contact with the wall of the shaft hole 13. By providing the third sealing ring 45 and the third bearing 46 between the rotating shaft 21 and the shaft hole 13, the gap between the rotating shaft 21 and the shaft hole 13 can be sealed, improving the sealing effect on the transmission structure and ensuring smooth rotation of the rotating shaft 21 relative to the shaft hole 13.

[0055] like Figure 2 As shown, the inner ring of the first sealing ring 41 has a first lip and a second lip located below the first lip. The inner ring of the first sealing ring 41 is in contact with the outer wall of the drive shaft 12 through the first and second lips. The first and second lips work together to seal, which can further improve the sealing effect at the inner ring of the first sealing ring 41. The inner ring of the second sealing ring 42 has a third lip and a fourth lip located below the third lip. The inner ring of the second sealing ring 42 is in contact with the outer wall of the fixed shaft seat 311 through the third and fourth lips. The third and fourth lips work together to seal, which can further improve the sealing effect at the inner ring of the second sealing ring 42. In this embodiment, the first sealing ring 41, the second sealing ring 42, and the third sealing ring 45 are all made of Teflon material.

[0056] like Figure 1 As shown, the drive shaft 12 has a clearance hole 121, and the rotating shaft 21 passes through the clearance hole 121. The stirring assembly also includes a fourth bearing 60, the inner ring of which is fitted onto the outer wall of the rotating shaft 21, and the outer ring of which is in contact with the wall of the clearance hole 121. With this structure, by placing the fourth bearing 60 between the clearance hole 121 and the rotating shaft 21, the smooth rotation of the rotating shaft 21 relative to the clearance hole 121 is ensured, while the axial stability of the rotating shaft 21's horizontal rotation is increased. The axis of rotation is the common axis of the clearance hole 121 and the shaft hole 13.

[0057] like Figure 1As shown, the moving gear 32 is located on the side of the drive shaft 12 away from the shaft hole 13. This arrangement allows for the following: when the rotating drum 10 rotates clockwise from top to bottom, the rotating shaft 21 rotates counterclockwise from the end away from the shaft hole 13 to the end closer to the shaft hole 13; conversely, when the rotating drum 10 rotates counterclockwise from top to bottom, the rotating shaft 21 rotates clockwise from the end away from the shaft hole 13 to the end closer to the shaft hole 13. In other words, the rotation direction of the stirring blade 20 is opposite to the rotation direction of the rotating drum 10 (clockwise / counterclockwise). This makes it easier for the stirring blade 20 to tumble the food, resulting in more tumbling within the cooking cavity, more even heating, and further enhancing the three-dimensional stirring effect of the stirring assembly. Furthermore, this structure also increases the torque transmitted by the moving gear 32, thereby improving stirring performance.

[0058] like Figure 6 As shown, the lower end of the fixed shaft seat 311 has an anti-rotation hole 3116. An anti-rotation boss is provided on the inner pot, which extends into the anti-rotation hole 3116. The anti-rotation boss and the anti-rotation hole 3116 together form an anti-rotation structure 80, which can keep the fixed gear 31 fixed relative to the inner pot and facilitate the disassembly, maintenance and replacement of the stirring assembly.

[0059] like Figure 1 and Figure 3 As shown, a fixed blade 16 is also provided on the outer wall of the rotating drum 10, and the height of the fixed blade 16 is lower than the height of the stirring blade 20. When the rotating drum 10 rotates, the fixed blade 16 revolves around the vertical axis of the rotating drum 10, thereby stirring the food at the bottom and improving the stirring performance.

[0060] like Figure 1 , Figure 3 as well as Figure 7 As shown, a handle 17 is provided on the outer top wall of the upper body 14. When disassembling, maintaining or replacing the stirring assembly, the handle 17 on the outer top wall of the upper body 14 prevents the user from coming into contact with the blades, thus improving the safety of using the stirring assembly.

[0061] Another embodiment of the present invention provides a cooking appliance, which includes an inner pot and a stirring assembly. The inner pot has a driving member, and the stirring assembly 70 is disposed inside the inner pot. The driving member is drivenly connected to the drive shaft 12 of the stirring assembly 70. The stirring assembly 70 is the stirring assembly provided above.

[0062] Therefore, this cooking appliance can also use the blades 22 to achieve three-dimensional stirring of food, improving the mixing effect. Furthermore, by using the first sealing ring 41 to seal the gap between the hole wall of the through hole 33 and the outer wall of the drive shaft 12, and by using the second sealing ring 42 to seal the gap between the cavity wall of the mounting cavity 11 and the outer wall of the fixed shaft seat 311, food inside the cooking cavity will not enter the mixing assembly.

[0063] The cooking appliance also includes a base, an inner pot is placed on the base, a drive unit is placed inside the base, and the drive shaft of the drive unit passes through the inner pot and is connected to the transmission shaft 12.

[0064] In this embodiment, the cooking appliance also includes a lid, which is closable and can be installed in the inner pot. The lid seals the cooking cavity of the inner pot.

[0065] The cooking appliance includes an air fryer, rice cooker, electric pressure cooker, or a multi-functional heating pot with baking, cooking, and food preparation functions.

[0066] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0067] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0068] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0069] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0070] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A stirring assembly disposed in an inner pot, characterized in that, The stirring assembly includes: A rotating drum (10) is rotatably disposed inside the inner pot about its vertical axis. The rotating drum (10) has a mounting cavity (11), and a downwardly extending drive shaft (12) is provided on the top wall of the rotating drum (10). The stirring blade (20) includes a rotating shaft (21) and blades (22) disposed on the rotating shaft (21). A shaft hole (13) is provided through the side wall of the rotating cylinder (10), and the rotating shaft (21) is rotatably disposed in the shaft hole (13). The gear set (30) is located in the mounting cavity (11). The gear set (30) includes a fixed gear (31) and a moving gear (32). The fixed gear (31) includes a fixed shaft seat (311) and a gear cylinder (312) disposed on the fixed shaft seat (311). An anti-rotation structure (80) is provided between the fixed shaft seat (311) and the inner pot. A horizontally arranged gear ring (3121) is provided on the upper end face of the gear cylinder (312). The gear ring (3121) is fixed relative to the inner pot with the fixed gear (31). The moving gear (32) is disposed on the rotating shaft (21) and meshes with the gear ring (3121). The fixed gear (31) has a through hole (33) that penetrates the fixed shaft seat (311) and the gear cylinder (312) in a vertical direction. The transmission shaft (12) passes through the through hole (33). The sealing assembly (40) includes a first sealing ring (41), the outer ring of which is in contact with the wall of the through hole (33), and the inner ring of which is in contact with the outer wall of the drive shaft (12). The sealing assembly (40) also includes a second sealing ring (42), the outer ring of which is in contact with the wall of the mounting cavity (11), and the inner ring of which is in contact with the outer wall of the fixed shaft seat (311). The sealing assembly (40) further includes a first bearing (43), the inner ring of which is sleeved on the outer wall of the drive shaft (12), and the outer ring of which is disposed corresponding to the wall of the through hole (33).

2. The stirring assembly according to claim 1, characterized in that, The sealing assembly (40) further includes a second bearing (44), the inner ring of which is sleeved on the outer wall of the fixed shaft seat (311), and the outer ring of which is disposed corresponding to the cavity wall of the mounting cavity (11).

3. The stirring assembly according to claim 1, characterized in that, The through hole (33) includes a first through hole (331) penetrating the fixed shaft seat (311) and a second through hole (332) penetrating the gear cylinder (312). A first limiting boss (3311) is provided on the hole wall of the first through hole (331). The lower end of the first sealing ring (41) abuts against the upper surface of the first limiting boss (3311). The lower end of the first bearing (43) abuts against the upper end of the first sealing ring (41). The lower end of the gear cylinder (312) extends into the first through hole (331) and abuts against the upper end of the first bearing (43).

4. The stirring assembly according to claim 2, characterized in that, The rotating drum (10) includes an upper seat (14) and a lower seat (15) connected to the lower end of the upper seat (14). The mounting cavity (11) is disposed on the upper seat (14). The transmission shaft (12) is disposed on the top wall of the upper seat (14). The shaft hole (13) is disposed on the side wall of the upper seat (14). The lower end of the fixed gear (31) extends into the lower seat (15).

5. The stirring assembly according to claim 4, characterized in that, A second limiting boss (3111) is provided on the outer side wall of the fixed shaft seat (311). The lower end of the second sealing ring (42) abuts against the upper surface of the lower seat body (15), the upper end of the second sealing ring (42) abuts against the lower end of the second bearing (44), and the second limiting boss (3111) is mounted on the upper end of the second bearing (44).

6. The stirring assembly according to any one of claims 1 to 5, characterized in that, The gear cylinder (312) includes a first connecting plate (3122) and a first cylinder (3125) connected to each other. The first cylinder (3125) is located below the first connecting plate (3122), and the gear ring (3121) is disposed on the upper surface of the first connecting plate (3122). The fixed-axis seat (311) includes a second connecting plate (3112) and a second cylinder (3115) connected to each other. The second cylinder (3115) is located below the second connecting plate (3112). The first cylinder (3125) passes through the second cylinder (3115). The first connecting plate (3122) is located above the second connecting plate (3112) and is connected to the second connecting plate (3112).

7. The stirring assembly according to claim 6, characterized in that, The first connecting plate (3122) has a first connecting hole (3123), and the second connecting plate (3112) has a second connecting hole (3113) corresponding to the first connecting hole (3123). Fasteners are connected to the first connecting hole (3123) and the second connecting hole (3113) respectively; and / or, The lower surface of the first connecting plate (3122) is provided with a positioning post (3124), and the second connecting plate (3112) is provided with a positioning hole (3114), and the positioning post (3124) passes through the positioning hole (3114).

8. The stirring assembly according to any one of claims 1 to 5, characterized in that, The sealing assembly (40) also includes a third sealing ring (45) and a third bearing (46). The inner ring of the third sealing ring (45) and the inner ring of the third bearing (46) are both fitted on the outer side wall of the rotating shaft (21). The outer ring of the third sealing ring (45) and the outer ring of the third bearing (46) are both in contact with the hole wall of the shaft hole (13).

9. The stirring assembly according to any one of claims 1 to 5, characterized in that, The drive shaft (12) has a clearance hole (121), the rotating shaft (21) passes through the clearance hole (121), and the stirring assembly also includes a fourth bearing (60). The inner ring of the fourth bearing (60) is sleeved on the outer side wall of the rotating shaft (21), and the outer ring of the fourth bearing (60) is in contact with the hole wall of the clearance hole (121). The moving gear (32) is located on the side of the drive shaft (12) away from the shaft hole (13); The lower end of the fixed shaft seat (311) has an anti-rotation hole (3116). A fixing blade (16) is also provided on the outer wall of the rotating drum (10), and the height of the fixing blade (16) is lower than the height of the stirring blade (20).

10. A cooking utensil, characterized in that, The cooking appliance includes: The inner pot has a driving mechanism; A stirring assembly (70) is disposed inside the inner pot. The driving member is drivenly connected to the drive shaft (12) of the stirring assembly (70). The stirring assembly (70) is the stirring assembly according to any one of claims 1 to 9.

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