CN217066119U - Upper cover and cooking utensil with same - Google Patents

Abstract

The utility model provides an upper cover and have its cooking utensil, the upper cover includes: a cover body; the motor is arranged in the cover body and connected with the cover body, and is provided with a motor shaft; the fan blades are rotatably arranged below the cover body; the transmission shaft is rotatably arranged on the cover body in a penetrating way, a motor shaft is in driving connection with the upper end of the transmission shaft, and the lower end of the transmission shaft extends downwards out of the lower surface of the cover body and is in driving connection with the fan blades; the transmission shaft is located to the cover to the sealing member, and the sealing member is the tubular structure, and the sealing member is made by elastic material, and the last border of sealing member has the sealed position of laminating mutually with the lid and dodges the position with the lid phase separation. Through the technical scheme that this application provided, can solve the seal structure of cooking utensil's transmission shaft department among the correlation technique and have the problem of improving the space.

Description

Upper cover and cooking utensil with same

Technical Field

The utility model relates to a small household appliances technical field particularly, relates to an upper cover and have its cooking utensil.

Background

Cooking utensil with toast the function can realize toasting the culinary art to food, toasts under the culinary art state, can utilize the heat that the piece that generates heat sent to toast food.

In the correlation technique, cooking utensil includes the upper cover and the pot body, and the upper cover is provided with motor and flabellum, passes through transmission shaft transmission moment of torsion between motor and the flabellum, utilizes the motor to drive the flabellum rotatory, and the flabellum blows hot-blast to the internal culinary art in order to toast the culinary art to food.

However, there is room for improvement in the sealing structure at the drive shaft of the related art cooking appliance.

SUMMERY OF THE UTILITY MODEL

The utility model provides an upper cover and have its cooking utensil to there is the problem in improvement space in the seal structure of the transmission shaft department of cooking utensil in the solution correlation technique.

According to an aspect of the utility model, a upper cover is provided, and the upper cover includes: a cover body; the motor is arranged in the cover body and connected with the cover body, and is provided with a motor shaft; the fan blades are rotatably arranged below the cover body; the transmission shaft is rotatably arranged on the cover body in a penetrating way, a motor shaft is in driving connection with the upper end of the transmission shaft, and the lower end of the transmission shaft extends downwards out of the lower surface of the cover body and is in driving connection with the fan blades; the transmission shaft is located to the cover to the sealing member, and the sealing member is the tubular structure, and the sealing member is made by elastic material, and the last border of sealing member has the sealed position of laminating mutually with the lid and dodges the position with the lid phase separation.

Use the technical scheme of the utility model, at the motor during operation, the motor shaft of motor drives the transmission shaft rotatory, and the transmission shaft drives the flabellum rotatory, and the flabellum blows hot-blast to the internal culinary art in order to toast food, because the transmission shaft is located to the sealing member cover, and the transmission shaft rotation is followed to the sealing member, and the last border of sealing member takes place to remove under the effect of centrifugal force this moment to remove to and lie in with the lid phase separation and dodge the position by the sealed position of laminating mutually with the lid, thereby can not influence the transmission shaft rotation. When the motor stops working, the sealing element is made of elastic materials and returns to the sealing position attached to the cover body under the action of elastic restoring force. Therefore, the sealing structure at the transmission shaft is set as the sealing piece, so that the rotation of the transmission shaft can not be influenced when the motor works, and the upper cover can have a good sealing effect when the motor does not work. When utilizing cooking utensil to carry out pressure cooking, the sealing member can extrude on the lid under the effect of pressure, and sealing member department forms effective sealed to can utilize cooking utensil to carry out pressure cooking.

Further, the sealing member includes bottom plate and annular curb plate, and the bottom plate is connected with the lower extreme of annular curb plate, and the bottom plate has the mounting hole, and the mounting hole is worn to locate by the transmission shaft, and the upper end of annular curb plate has the sealed position of laminating mutually with the lid and dodges the position with the lid phase separation. By adopting the sealing element with the structure, the transmission shaft can be utilized to penetrate through the mounting hole to realize the connection and the positioning of the sealing element, so that when the transmission shaft rotates, the separation of the upper edge of the annular side plate and the cover body is realized by utilizing the centrifugal force of the transmission shaft.

Furthermore, the lid has the heavy platform of downward protrusion in the lower surface of lid, and the diapire of heavy platform is rotationally worn to locate by the transmission shaft, and the sealing member cover is established in the outside of heavy platform, and when the last border of sealing member was located sealed position, the upper end of annular curb plate and the lateral wall looks butt of heavy platform. Through setting up heavy platform at the lower surface of lid, when the last border of annular curb plate and lid phase separation under the effect of centrifugal force, the last border of annular curb plate can not receive frictional force's influence, the separation of the last border of the annular curb plate of being convenient for and lid.

Further, the annular side plate comprises a vertical plate section and an annular flange, the outer edge of the annular flange is connected with the upper end of the vertical plate section, a gap is reserved between the inner side wall of the vertical plate section and the outer side wall of the sinking platform, and when the upper edge of the sealing element is located at a sealing position, the inner edge of the annular flange is abutted to the outer side wall of the sinking platform. Adopt above-mentioned structure, can only utilize the contact of annular turn-ups and the lateral wall that sinks the platform to form sealedly to the inside wall of vertical plate section has the interval with the lateral wall that sinks the platform, makes the sealing member can enough form sealedly with sinking the platform, can not make the area of contact of sealing member and sinking the platform too big again, and then influences the deformation that the sealing member takes place under the effect of centrifugal force.

Further, the thickness of the vertical plate section is less than or equal to 2mm, and the vertical plate section is easy to deform and separate from the cover body by adopting the size range. If the thickness of the vertical plate section is larger than 2mm, the vertical plate section is not easy to deform and separate from the cover body; and/or, the interval between the inside wall of vertical plate section and the lateral wall of heavy platform is less than or equal to 2mm, adopts above-mentioned size scope, can not make annular turn-ups's length too big, and then can not influence the sealed effect of annular turn-ups and heavy platform.

Furthermore, a fixing groove is formed in the outer side wall of the transmission shaft, the fixing groove is of an annular structure and extends along the circumferential direction of the transmission shaft, and the bottom plate is inserted into the fixing groove. The positioning of the sealing element can be more stable and a stable connection can be formed by the fixing groove.

Furthermore, the upper cover also comprises a bearing arranged in the sinking platform, the bearing comprises an inner ring and an outer ring, the inner ring is sleeved on the transmission shaft, and the outer ring is abutted against the inner side wall of the sinking platform. The bearing can be used for reducing the rotating resistance of the transmission shaft, so that the transmission shaft can rotate more smoothly, and the bearing can be matched with the sinking platform to axially position the transmission shaft.

Furthermore, the sealing element is made of a silica gel material, and the elasticity of the silica gel material can be utilized, so that the sealing element has a good deformation effect, the vertical plate section is easy to deform and separate from the cover body, and the vertical plate section is easy to return to a sealing position; and/or the cross section of the sealing element is circular, and the design of a circular structure is adopted, so that the shape of the sealing element is matched with that of the sinking platform, and the sealing element has a good sealing effect when located at a sealing position.

Further, the lid is including sheltering from the lid and being located the metal covering of sheltering from the below of lid, and the motor setting is in sheltering from the lid, and the flabellum rotationally sets up in the below of metal covering, and the metal covering is rotationally worn to locate by the transmission shaft, and the last border of sealing member has the sealed position of laminating mutually with the metal covering and dodges the position with the metal covering phase separation. The shielding cover can shield the motor, the fan blades, the transmission shaft and the sealing element, the motor, the fan blades, the transmission shaft and the sealing element are prevented from being exposed, and the metal cover is arranged on the pot body in a covering mode, so that the pot body can be sealed.

Furthermore, the upper cover also comprises a heating part, the heating part is positioned below the fan blades, the heating part can be used for heating air, and then the fan blades are used for blowing the hot air into a cooking cavity of the cooking appliance to bake food; the upper cover also comprises a pressure-limiting valve and an exhaust pipe, the exhaust pipe penetrates through the metal cover, the pressure-limiting valve is arranged at the upper end of the exhaust pipe, and the upper cover can be arranged on the pot body to realize pressure cooking of food. Thereby the cooking utensil has the advantage of multiple purposes; the metal cover is provided with cover teeth, the pot body is provided with pot teeth, and the locking and unlocking of the cooking utensil can be realized through the engagement and separation of the cover teeth and the pot teeth; the upper cover further comprises a first connecting piece and a second connecting piece, the first connecting piece and the second connecting piece can be detachably connected and are matched in a rotation stopping mode, the first connecting piece is fixedly connected with the motor shaft, the second connecting piece is fixedly connected with the transmission shaft, the torque of the motor can be transmitted to the transmission shaft through the first connecting piece and the second connecting piece, and then the transmission shaft drives the fan blades to rotate.

According to another aspect of the present invention, there is provided a cooking appliance, the cooking appliance including: a pan body; the upper cover is arranged on the pot body and is the upper cover provided above. Therefore, the sealing structure at the transmission shaft is also set to be the sealing piece, the rotation of the transmission shaft can not be influenced when the motor works, and the upper cover can have a good sealing effect when the motor does not work.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a cross-sectional view of a cooking appliance provided by an embodiment of the present invention;

fig. 2 shows a partial enlarged view at a in fig. 1;

FIG. 3 shows a cross-sectional view of the seal of FIG. 2;

FIG. 4 shows a schematic structural view of the seal of FIG. 2;

FIG. 5 shows a schematic structural view of the propeller shaft of FIG. 2;

FIG. 6 shows a schematic structural view of the bearing of FIG. 2;

FIG. 7 shows a schematic view of the metal cover of FIG. 1;

FIG. 8 shows a cross-sectional view of the metal lid of FIG. 1;

FIG. 9 is a schematic view of the fan blade of FIG. 1;

fig. 10 shows a schematic view of the second connector of fig. 2.

Wherein the figures include the following reference numerals:

10. a cover body; 11. sinking a platform; 12. a shielding cover; 13. a metal cover; 131. covering teeth;

20. a motor; 21. a motor shaft;

30. a fan blade;

40. a drive shaft; 41. fixing grooves;

50. a seal member; 51. a base plate; 511. mounting holes; 52. an annular side plate; 521. a vertical plate section; 522. annular flanging;

60. a bearing;

70. a heat generating member;

81. a first connecting member; 82. a second connecting member;

90. and (4) a pot body.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 10, an embodiment of the present invention provides an upper cover, the upper cover includes a cover body 10, a motor 20, fan blades 30, a transmission shaft 40 and a sealing member 50, the motor 20 is disposed in the cover body 10 and connected to the cover body 10, the motor 20 has a motor shaft 21, the fan blades 30 are rotatably disposed below the cover body 10, the transmission shaft 40 rotatably penetrates through the cover body 10, the motor shaft 21 is drivingly connected to the upper end of the transmission shaft 40, the lower end of the transmission shaft 40 downwardly extends out of the lower surface of the cover body 10 and drivingly connected to the fan blades 30, the sealing member 50 is sleeved on the transmission shaft 40 and located below the cover body 10, the sealing member 50 is a cylindrical structure, the sealing member 50 is made of an elastic material, and the upper edge of the sealing member 50 has a sealing position attached to the cover body 10 and an avoiding position separated from the cover body 10.

Use the technical scheme of the utility model, at the motor 20 during operation, motor shaft 21 of motor 20 drives transmission shaft 40 rotatory, transmission shaft 40 drives flabellum 30 rotatory, flabellum 30 blows hot-blast to the internal culinary art in order to toast food, because transmission shaft 40 is located to the 50 covers of sealing member, sealing member 50 follows transmission shaft 40 and rotates, the last border of sealing member 50 this moment takes place to remove under the effect of centrifugal force, and remove to and lie in and dodge the position with 10 phase separations of lid by the sealed position of laminating mutually with lid 10, thereby can not influence transmission shaft 40 rotatory. When the motor 20 stops operating, the sealing member 50 is made of an elastic material, and the sealing member 50 returns to a sealing position where it is attached to the cover 10 by an elastic restoring force. Therefore, since the sealing structure at the transmission shaft 40 is provided as the sealing member 50, the rotation of the transmission shaft 40 can be not affected when the motor 20 is operated, and the upper cover can have a good sealing effect when the motor 20 is not operated. When pressure cooking is performed by using the cooking appliance, the sealing member 50 is pressed against the lid body 10 by the pressure, and the sealing member 50 forms an effective seal, so that the pressure cooking can be performed by using the cooking appliance.

Compared with the sealing structure which is provided with an oil seal at the transmission shaft for sealing, the sealing structure in the embodiment can reduce the rotation resistance of the transmission shaft 40 while realizing sealing. Specifically, the transmission shaft 40 is sealed by the oil seal, and when the transmission shaft 40 rotates, the friction between the transmission shaft 40 and the oil seal is large, so that the resistance of the motor 20 during operation is large. Further, the sealing structure can be simplified by using the sealing member 50 made of an elastic material as compared with the case where an oil seal is provided.

In the present embodiment, the upper portion of the cylindrical structure of the sealing member 50 is provided as an opening, and the upper edge of the cylindrical structure has a sealing position in contact with the lid body 10 and a relief position separated from the lid body 10.

As shown in fig. 2, 3 and 4, the sealing member 50 includes a bottom plate 51 and an annular side plate 52, the bottom plate 51 is connected to a lower end of the annular side plate 52, the bottom plate 51 has a mounting hole 511, the transmission shaft 40 is inserted into the mounting hole 511, and an upper end of the annular side plate 52 has a sealing position attached to the lid body 10 and a relief position separated from the lid body 10. With the sealing element 50 having the above structure, the transmission shaft 40 can be inserted into the mounting hole 511 to connect and position the sealing element 50, so that when the transmission shaft 40 rotates, the upper edge of the annular side plate 52 is separated from the cover 10 by the centrifugal force of the transmission shaft 40.

As shown in fig. 2 and 8, the cover 10 has a sinking platform 11 protruding downward from the lower surface of the cover 10, the transmission shaft 40 is rotatably inserted through the bottom wall of the sinking platform 11, the sealing member 50 is covered outside the sinking platform 11, and when the upper edge of the sealing member 50 is located at the sealing position, the upper end of the annular side plate 52 is in contact with the outer side wall of the sinking platform 11. By providing the sinking platform 11 on the lower surface of the lid 10, when the upper edge of the annular side plate 52 is separated from the lid 10 under the action of centrifugal force, the upper edge of the annular side plate 52 is not affected by friction, which facilitates the separation of the upper edge of the annular side plate 52 from the lid 10.

As shown in fig. 2 and 3, the annular side plate 52 includes a vertical plate section 521 and an annular flange 522, an outer edge of the annular flange 522 is connected to an upper end of the vertical plate section 521, a space is provided between an inner side wall of the vertical plate section 521 and an outer side wall of the sinking platform 11, and when an upper edge of the sealing member 50 is located at the sealing position, an inner edge of the annular flange 522 abuts against the outer side wall of the sinking platform 11. By adopting the structure, the sealing can be formed only by the contact of the annular flanging 522 and the outer side wall of the sinking platform 11, and the interval is reserved between the inner side wall of the vertical plate section 521 and the outer side wall of the sinking platform 11, so that the sealing element 50 can form sealing with the sinking platform 11, and the contact area between the sealing element 50 and the sinking platform 11 is not too large, thereby influencing the deformation of the sealing element 50 under the action of centrifugal force.

In the present embodiment, the thickness of the vertical plate 521 is less than or equal to 2mm, and the above size range is adopted, so that the vertical plate 521 is easily deformed and separated from the lid 10. If the thickness dimension of the vertical plate 521 is greater than 2mm, the vertical plate 521 is not easily deformed and separated from the cover 10.

The thickness of the vertical plate section 521 may be 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, or any value less than or equal to 2 mm.

In this embodiment, the interval between the inner sidewall of the vertical plate section 521 and the outer sidewall of the sinking platform 11 is less than or equal to 2mm, and by adopting the above size range, the length of the annular flanging 522 is not too large, and the sealing effect of the annular flanging 522 and the sinking platform 11 is not affected. If the interval between the inner side wall of the vertical plate section 521 and the outer side wall of the sinking platform 11 is greater than 2mm, the length of the annular flanging 522 is too large, and the sealing effect of the annular flanging 522 and the sinking platform 11 is further affected.

The interval between the inner side wall of the vertical plate section 521 and the outer side wall of the sinking platform 11 can be any value of 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm and less than or equal to 2 mm.

As shown in fig. 2 and 5, the outer side wall of the transmission shaft 40 is provided with a fixing groove 41, the fixing groove 41 is of a ring structure and extends along the circumferential direction of the transmission shaft 40, and the bottom plate 51 is inserted into the fixing groove 41. The positioning of the sealing member 50 can be more stably and stably coupled by the fixing groove 41.

In this embodiment, the transmission shaft 40 is provided with a first annular boss and a second annular boss, the first annular boss is located above the second annular boss, a lower surface of the second annular boss abuts against an upper surface of the fan blade, and a gap between the first annular boss and the second annular boss forms the fixing groove 41. The bottom wall of the sinking platform 11 is provided with an avoiding hole, the outer diameter of the first annular boss is smaller than the inner diameter of the avoiding hole, and part of the first annular boss is positioned in the avoiding hole, so that the length size of the transmission shaft 40 can be reduced under the condition that the strength of the transmission shaft 40 is not influenced.

As shown in fig. 2 and 6, the upper cover further includes a bearing 60 disposed in the sinking platform 11, the bearing 60 includes an inner ring and an outer ring, the inner ring is sleeved on the transmission shaft 40, and the outer ring is abutted to the inner side wall of the sinking platform 11. The bearing 60 can be used for reducing the rotation resistance of the transmission shaft 40, so that the transmission shaft 40 can rotate more smoothly, and the bearing 60 and the sinking platform 11 are matched to form axial positioning on the transmission shaft 40.

In this embodiment, the inner ring of the bearing 60 is in interference fit with the transmission shaft, and the outer ring of the bearing 60 is in interference fit with or fixedly connected to the inner sidewall of the sinking platform 11, so that the bearing 60 and the cover 10 can be axially fixed, and the bearing 60 can be further utilized to axially position the transmission shaft 40.

It should be noted that, the sealing element 50 is made of a silicone material, and the elasticity of the silicone material can be utilized, so that the sealing element 50 has a good deformation effect, and thus the vertical plate 521 is easily deformed and separated from the lid 10, and the vertical plate 521 is easily restored to the sealing position.

The cross section of the sealing element 50 is circular, and the design of a circular structure is adopted, so that the shape of the sealing element 50 can be matched with the shape of the sinking platform 11, and the sealing element 50 has a good sealing effect when located at a sealing position.

As shown in fig. 1 and 2, the cover body 10 includes a shielding cover 12 and a metal cover 13 located below the shielding cover 12, the motor 20 is disposed in the shielding cover 12, the fan blades 30 are rotatably disposed below the metal cover 13, the transmission shaft 40 is rotatably disposed through the metal cover 13, and the upper edge of the sealing member 50 has a sealing position attached to the metal cover 13 and a relief position separated from the metal cover 13. The motor 20, the fan blades 30, the transmission shaft 40 and the sealing element 50 can be shielded by the shielding cover 12, the motor 20, the fan blades 30, the transmission shaft 40 and the sealing element 50 are prevented from being exposed, and the metal cover 13 is covered on the pot body to seal the pot body.

It should be noted that the shielding cover 12 includes a face cover and a lining, the motor 20, the fan blades 30, the transmission shaft 40 and the sealing element 50 can be shielded by the face cover, the motor 20, the fan blades 30, the transmission shaft 40 and the sealing element 50 can be arranged by the lining, and the motor 20 can be positioned.

As shown in fig. 1, the upper cover further includes a heating element 70, the heating element 70 is located below the fan blades 30, the air can be heated by the heating element 70, and then the fan blades 30 blow the hot air into the cooking cavity of the cooking appliance to bake the food.

In this embodiment, the upper cover further includes a pressure-limiting valve and an exhaust pipe, the exhaust pipe penetrates through the metal cover 13, the pressure-limiting valve is arranged at the upper end of the exhaust pipe, and the upper cover can be arranged on the pot body to realize pressure cooking of food. Thereby making the cooking utensil have the advantage of one object for multiple purposes.

It should be noted that the metal cover 13 has cover teeth 131, pot teeth are provided on the pot body, and locking and unlocking of the cooking appliance can be realized by engagement and separation of the cover teeth 131 and the pot teeth.

The upper cover further comprises a first connecting piece 81 and a second connecting piece 82, the first connecting piece 81 and the second connecting piece 82 are detachably connected and are in rotation stopping fit, the first connecting piece 81 is fixedly connected with the motor shaft 21, and the second connecting piece 82 is fixedly connected with the transmission shaft 40. The torque of the motor 20 can be transmitted to the transmission shaft 40 through the first connecting member 81 and the second connecting member 82, so that the transmission shaft 40 drives the fan blades 30 to rotate.

In this embodiment, the second connecting member 82 has a semicircular inner hole, the upper end of the transmission shaft 40 is a semicircular shaft, and the semicircular inner hole is penetrated by the semicircular shaft, so that the second connecting member 82 is engaged with the transmission shaft 40 in a rotation-stopping manner. The rotation stopping fit between the lower end of the transmission shaft 40 and the fan blades 30 is the same as the above structure, and will not be described herein.

The utility model discloses another embodiment provides a cooking utensil, and cooking utensil includes pot body 90 and upper cover, and pot body 90 is located to the upper cover lid, and the upper cover that the upper cover was provided for the aforesaid. Therefore, the cooking utensil, also setting the sealing structure at the transmission shaft 40 as the sealing member 50, can not influence the rotation of the transmission shaft 40 when the motor 20 works, and can enable the upper cover to have good sealing effect when the motor 20 does not work.

Wherein, the cooking utensil comprises an air fryer or an electric cooker or an electric pressure cooker or a multifunctional heating pot with the functions of baking, cooking and cooking.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and 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 interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (11)

1. An upper cover, characterized in that the upper cover comprises:

a cover body (10);

a motor (20) disposed within the cover (10) and connected to the cover (10), the motor (20) having a motor shaft (21);

fan blades (30) which are rotatably arranged below the cover body (10);

the transmission shaft (40) is rotatably arranged on the cover body (10) in a penetrating mode, the motor shaft (21) is in driving connection with the upper end of the transmission shaft (40), and the lower end of the transmission shaft (40) extends downwards out of the lower surface of the cover body (10) and is in driving connection with the fan blades (30);

the sealing element (50) is sleeved on the transmission shaft (40) and located below the cover body (10), the sealing element (50) is of a cylindrical structure, the sealing element (50) is made of elastic materials, and the upper edge of the sealing element (50) is provided with a sealing position attached to the cover body (10) and an avoiding position separated from the cover body (10).

2. The upper cover according to claim 1, wherein the sealing member (50) comprises a bottom plate (51) and an annular side plate (52), the bottom plate (51) is connected with the lower end of the annular side plate (52), the bottom plate (51) is provided with a mounting hole (511), the transmission shaft (40) is arranged in the mounting hole (511) in a penetrating way, and the upper end of the annular side plate (52) is provided with a sealing position which is jointed with the cover body (10) and a relief position which is separated from the cover body (10).

3. The upper cover according to claim 2, wherein the cover body (10) has a sinking platform (11) protruding downward from the lower surface of the cover body (10), the transmission shaft (40) is rotatably disposed through the bottom wall of the sinking platform (11), the sealing member (50) is covered outside the sinking platform (11), and the upper end of the annular side plate (52) abuts against the outer side wall of the sinking platform (11) when the upper edge of the sealing member (50) is in the sealing position.

4. The upper cover according to claim 3, wherein the annular side plate (52) comprises a vertical plate section (521) and an annular flange (522), the outer edge of the annular flange (522) is connected with the upper end of the vertical plate section (521), a space is arranged between the inner side wall of the vertical plate section (521) and the outer side wall of the sinking platform (11), and when the upper edge of the sealing element (50) is located at the sealing position, the inner edge of the annular flange (522) abuts against the outer side wall of the sinking platform (11).

5. The overcap of claim 4,

the thickness dimension of the vertical plate section (521) is less than or equal to 2 mm; and/or the presence of a gas in the gas,

the interval between the inner side wall of the vertical plate section (521) and the outer side wall of the sinking platform (11) is smaller than or equal to 2 mm.

6. The upper cover according to any one of claims 2 to 5, wherein a fixing groove (41) is provided on an outer side wall of the transmission shaft (40), the fixing groove (41) is of a ring structure and extends along a circumferential direction of the transmission shaft (40), and the bottom plate (51) is inserted into the fixing groove (41).

7. The upper cover according to any one of claims 3 to 5, further comprising a bearing (60) disposed in the sinking platform (11), wherein the bearing (60) comprises an inner ring and an outer ring, the inner ring is sleeved on the transmission shaft (40), and the outer ring is abutted against the inner side wall of the sinking platform (11).

8. The upper lid according to any one of claims 1 to 5,

the sealing element (50) is made of a silica gel material; and/or the presence of a gas in the gas,

the cross-sectional shape of the seal (50) is circular.

9. The upper cover according to any one of claims 1 to 5, wherein the cover body (10) comprises a shielding cover (12) and a metal cover (13) located below the shielding cover (12), the motor (20) is disposed in the shielding cover (12), the fan blades (30) are rotatably disposed below the metal cover (13), the transmission shaft (40) is rotatably disposed through the metal cover (13), and the upper edge of the sealing member (50) has a sealing position in contact with the metal cover (13) and an avoiding position separated from the metal cover (13).

10. The overcap of claim 9,

the upper cover also comprises a heating piece (70), and the heating piece (70) is positioned below the fan blades (30);

the upper cover also comprises a pressure limiting valve and an exhaust pipe, the exhaust pipe penetrates through the metal cover (13), and the pressure limiting valve is arranged at the upper end of the exhaust pipe;

the metal cover (13) is provided with a cover tooth (131);

the upper cover further comprises a first connecting piece (81) and a second connecting piece (82), the first connecting piece (81) and the second connecting piece (82) are detachably connected and are in rotation stopping fit, the first connecting piece (81) is fixedly connected with the motor shaft (21), and the second connecting piece (82) is fixedly connected with the transmission shaft (40).

11. A cooking appliance, characterized in that it comprises:

a pan body (90);

an upper cover, which is arranged on the pot body (90) and is the upper cover of any one of claims 1 to 10.

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