CN116602543A - Upper cover and cooking utensil with same - Google Patents

Abstract

The application provides an upper cover and a cooking utensil with the same, wherein the upper cover comprises: the cover body comprises a buckling cover and an inner cover, an exhaust cavity is formed between the buckling cover and the inner cover, and the inner cover is provided with a communication hole; the exhaust assembly comprises a stop valve, an exhaust pipe and a pressure limiting valve, wherein the stop valve is provided with a communication position and a stop position, the exhaust pipe penetrates through the buckling cover, the center line of the exhaust pipe and the center line of the communication hole are arranged in a staggered mode, the pressure limiting valve cover is arranged above the exhaust pipe, and the pressure limiting valve is provided with a pressure limiting position and an exhaust position; the driving part comprises a driving part and a transmission part, the transmission part is rotatably arranged, the transmission part drives the stop valve to switch between a communication position and a stop position, the transmission part drives the pressure limiting valve to switch between a pressure limiting position and an exhaust position, the pressure limiting valve is positioned at the pressure limiting position when the stop valve is positioned at the communication position, and the pressure limiting valve is positioned at the exhaust position when the stop valve is positioned at the stop position. Through this scheme, can solve the food in the pot body and can arrange the problem outside the upper cover.

Description

Upper cover and cooking utensil with same

Technical Field

The application relates to the technical field of small household appliances, in particular to an upper cover and a cooking appliance with the same.

Background

The electric pressure cooker can make water reach higher temperature without boiling by the principle that the boiling point of liquid is raised under higher air pressure so as to accelerate the efficiency of stewing food.

In the related art, an electric pressure cooker includes a cooker body and an upper cover provided over the cooker body. During the cooking process, the pot body forms a closed cooking cavity. Therefore, after cooking is finished, the pot body is still in a high-pressure state, and the upper cover can be opened only by exhausting.

However, due to the high pressure in the pot body, food in the pot body can be discharged out of the upper cover along with steam in the exhaust process, so that the use experience of a user is affected.

Disclosure of Invention

The application provides an upper cover and a cooking utensil with the upper cover, which are used for solving the problem that food in a pot body in the related art can be discharged outside the upper cover.

According to an aspect of the present application, there is provided an upper cover comprising: the cover body comprises a buckling cover with cover teeth and an inner cover positioned below the buckling cover, a space between the buckling cover and the inner cover forms an exhaust cavity, and the inner cover is provided with a communication hole which penetrates through the inner cover; the exhaust assembly comprises a stop valve, an exhaust pipe and a pressure limiting valve, wherein the stop valve is vertically movably arranged on the buckling cover, the stop valve is provided with a communication position for opening the communication hole and a stop position for blocking the communication hole, the exhaust pipe vertically penetrates through the buckling cover, the projection of the central line of the exhaust pipe and the central line of the communication hole in a horizontal plane is arranged in a staggered mode, the lower end of the exhaust pipe extends into the exhaust cavity, the upper end of the exhaust pipe penetrates out of the buckling cover, the pressure limiting valve is arranged above the exhaust pipe in a floating mode, and the pressure limiting valve is provided with a pressure limiting position for blocking the exhaust pipe and an exhaust position for opening the exhaust pipe; the driving part comprises a driving piece and a transmission piece in driving connection with the driving piece, the transmission piece is rotatably arranged along a vertical axis, the transmission piece can drive the stop valve to switch between a communication position and a stop position, the transmission piece can drive the pressure limiting valve to switch between a pressure limiting position and an exhaust position, the pressure limiting valve is positioned at the pressure limiting position when the stop valve is positioned at the communication position, and the pressure limiting valve is positioned at the exhaust position when the stop valve is positioned at the stop position.

By applying the technical scheme of the application, the upper cover comprises the cover body, the exhaust assembly and the driving part, after cooking is finished, the driving part is used for driving the driving part, so that the driving part rotates along the vertical axis, and then the driving part is used for driving the stop-through valve to move vertically from the stop-through position to the communication position, so that the stop-through valve opens the communication hole and discharges steam in the pot body into the exhaust cavity through the communication hole. Then, the driving part is used for driving the driving part, so that the driving part rotates along the vertical axis, and the pressure limiting valve is driven by the driving part to float from the pressure limiting position to the exhaust position, so that the pressure limiting valve opens the exhaust pipe, and steam in the exhaust cavity is discharged out of the upper cover through the exhaust pipe. The above operation is repeated until the exhaustion is completed. After the exhaust is finished, the transmission part is used for driving the stop valve to move vertically from the stop position to the communication position, so that the stop valve opens the communication hole to enable food entering the exhaust cavity along with steam from the pot body to flow back into the pot body through the communication hole, and food residues are avoided in the exhaust cavity. Therefore, after the cover is opened, no food flows out of the upper cover, and the use experience of a user is improved.

Further, the driving piece comprises a driving wheel and an exhaust cover arranged at the upper end of the driving wheel, the driving piece is in driving connection with the driving wheel to drive the driving wheel to rotate around the vertical axis of the driving wheel, the driving wheel can drive the stop valve to switch between a communication position and a stop position, the driving wheel can drive the exhaust cover to rotate around the vertical axis of the driving wheel, and the exhaust cover can drive the pressure limiting valve to switch between a pressure limiting position and an exhaust position. The transmission part with the structure can drive the stop valve to move by using the transmission wheel, and drive the pressure limiting valve to move by using the exhaust cover, so that interference between the two driving structures can not occur, and the reliability of the driving structures is enhanced.

Further, the driving wheel is connected with the exhaust cover, when the driving wheel drives the pressure limiting valve to be located at the exhaust position, the exhaust cover drives the stop valve to be located at the stop position, and when the driving wheel drives the pressure limiting valve to be located at the pressure limiting position, the exhaust cover drives the stop valve to be located at the communication position. The driving wheel is connected with the exhaust cover, so that the driving wheel and the exhaust cover can move simultaneously, and the pressure limiting valve and the stop valve can form a linkage relation, so that the effect of stopping the simultaneous movement of the stop valve and the pressure limiting valve can be controlled by one driving piece.

Further, a sliding groove is arranged on the driving wheel, the upper end of the stop valve stretches into the sliding groove and is attached to the top surface of the sliding groove, and the height of the top surface of the sliding groove is increased and then reduced in the circumferential direction of the driving wheel, so that the stop valve is switched between a communication position and a stop position. Through setting the top surface of spout to the inclined plane, utilize the change of the height of inclined plane in vertical to drive the vertical removal of end logical valve, have simple structure, operate reliable advantage.

Further, the top surface of the chute comprises a first plane, a second plane and two inclined planes which are connected with the first plane and the second plane and are obliquely arranged, the height of the first plane is larger than that of the second plane, when the upper end of the stop valve is attached to the first plane, the stop valve is located at the stop position, and when the upper end of the stop valve is attached to the second plane, the stop valve is located at the communication position. By adopting the chute with the structure, the inclined plane can be utilized to be attached to the stop valve to drive the stop valve to vertically move, and when the upper end of the stop valve is attached to the first plane or the second plane, the planar structure is utilized, so that the stop valve is more stable when staying at the position, and the sealing effect or the opening effect of the stop valve is better when the stop valve is positioned at the stop position or the communication position.

Further, the upper surface of the exhaust cover is provided with a protrusion, the protrusion is provided with a jacking position which is attached to the pressure limiting valve and a separation position which is separated from the pressure limiting valve, when the protrusion is positioned at the jacking position, the pressure limiting valve is positioned at the exhaust position, and when the protrusion is positioned at the separation position, the pressure limiting valve is positioned at the pressure limiting position. The driving mode that the bulge is arranged on the upper surface of the exhaust cover to drive the pressure limiting valve is adopted, and the device has the advantages of being simple in structure and convenient to set.

Further, the upper cover further comprises a control piece and a detection piece for detecting the rotation position of the exhaust cover, and the control piece is respectively and electrically connected with the detection piece and the driving piece so as to control the working state of the driving piece. The rotation position of the exhaust cover is detected by the detection part, so that the control part can conveniently control the working state of the driving part, and the working states of the driving wheel and the exhaust cover can be conveniently controlled.

Further, the detection piece comprises an optical coupler sensor, and two avoidance openings opposite to the optical coupler sensor are symmetrically arranged on the outer edge of the exhaust cover. The detection mode of adopting the optical coupler sensor to be matched with the avoidance opening has the advantages of simple structure and convenience in setting.

Further, the driving part also comprises a transmission frame arranged on the buckling cover, the transmission frame comprises a frame body and a transmission shaft rotatably penetrating through the frame body, the upper end of the transmission shaft penetrates out of the frame body and is in rotation-stopping connection with the exhaust cover, and the lower end of the transmission shaft penetrates out of the frame body and is in rotation-stopping connection with the transmission wheel. The transmission frame with the structure is convenient for arranging the transmission wheel and the exhaust cover on the buckling cover by using the frame body. The transmission shaft is adopted to facilitate the connection between the transmission wheel and the exhaust cover, so that the transmission wheel can drive the exhaust cover to rotate through the transmission shaft.

Further, the exhaust assembly further comprises a reset spring sleeved on the periphery of the stop valve, an annular boss is arranged on the outer side wall of the stop valve, the lower end of the reset spring is abutted against the buckling cover, and the upper end of the reset spring is abutted against the lower surface of the annular boss. By adopting the return spring, the elastic force of the return spring can be utilized to provide a return force, so that the stop valve automatically returns to the communication position from the stop position.

Further, the exhaust assembly further comprises a sealing ring fixedly arranged on the buckling cover, the inner wall of the sealing ring is attached to the outer side wall of the through valve, and the outer wall of the sealing ring is attached to the buckling cover. The sealing ring can form a sealing effect, so that steam in the exhaust cavity can not enter the buckling cover through a gap between the stop valve and the buckling cover, and damage to components in the buckling cover is prevented.

Further, the driving piece comprises a driving motor and a gear in driving connection with the driving motor, a first gear ring is arranged on the outer side wall of the driving wheel, and a second gear ring meshed with the first gear ring is arranged on the gear. The transmission mode of gear engagement is adopted, and the transmission mechanism has the advantages of simple and reliable transmission structure.

According to another aspect of the present application, there is provided a cooking appliance including: a pot body having a cooking cavity; the upper cover is arranged on the pot body in an openable and closable manner, the vent-stopping valve of the upper cover is provided with a communication position for opening the communication hole to communicate the cooking cavity and the exhaust cavity and a vent-stopping position for blocking the communication hole to isolate the cooking cavity and the exhaust cavity, and the upper cover is provided with the upper cover. After the exhaust is finished, the transmission member is used for driving the stop valve to vertically move from the stop position to the communication position, so that the stop valve opens the communication hole to enable food entering the exhaust cavity along with steam from the pot body to flow back into the pot body through the communication hole, and food residues are avoided in the exhaust cavity. Therefore, after the cover is opened, no food flows out of the upper cover, and the use experience of a user is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

fig. 1 shows an exploded view of an upper cover provided according to an embodiment of the present application;

fig. 2 illustrates a cross-sectional view of a pressure limiting valve of a cooking appliance in a pressure limiting position according to an embodiment of the present application;

FIG. 3 shows a partial enlarged view at A in FIG. 2;

fig. 4 illustrates a top view of a pressure limiting valve of a cooking appliance in a pressure limiting position according to an embodiment of the present application;

fig. 5 illustrates a cross-sectional view of a pressure limiting valve of a cooking appliance in an exhaust position according to an embodiment of the present application;

FIG. 6 shows a partial enlarged view at B in FIG. 5;

fig. 7 illustrates a top view of a pressure limiting valve of a cooking appliance in an exhaust position according to an embodiment of the present application;

FIG. 8 shows an exploded view of a stop valve, a driving member, and a driving cage provided in accordance with an embodiment of the present application;

FIG. 9 shows a cross-sectional view of a drive member and a drive carrier provided in accordance with an embodiment of the present application;

fig. 10 shows a top view of a drive section provided according to an embodiment of the present application;

FIG. 11 shows a bottom view of a drive wheel provided in accordance with an embodiment of the present application;

FIG. 12 shows a cross-sectional view of a drive wheel provided in accordance with an embodiment of the present application;

fig. 13 illustrates a schematic structure of a cooking appliance provided according to an embodiment of the present application.

Wherein the above figures include the following reference numerals:

10. a cover body; 11. a buckling cover; 12. an inner cover; 121. a communication hole; 13. an exhaust chamber;

20. an exhaust assembly; 21. a stop valve; 211. an annular boss; 22. an exhaust pipe; 23. a pressure limiting valve; 24. a return spring; 25. a seal ring;

30. a driving section; 31. a driving member; 311. a drive motor; 312. a gear; 3121. a second ring gear; 32. a transmission member; 321. a driving wheel; 3211. a first ring gear; 322. an exhaust cover; 3221. an avoidance opening; 331. a chute; 332. a first plane; 333. a second plane; 334. an inclined plane; 341. a protrusion; 35. a transmission frame; 351. a frame body; 352. a transmission shaft;

40. an optocoupler sensor;

50. a pot body; 51. a cooking chamber.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

As shown in fig. 1 to 13, the embodiment of the present application provides an upper cover, which includes a cover body 10, a vent assembly 20, and a driving part 30, wherein the cover body 10 includes a fastening cover 11 having a cover tooth and an inner cover 12 positioned below the fastening cover 11, a space between the fastening cover 11 and the inner cover 12 forms a vent chamber 13, and the inner cover 12 has a communication hole 121 penetrating therethrough; the exhaust assembly 20 comprises a stop valve 21, an exhaust pipe 22 and a pressure limiting valve 23, wherein the stop valve 21 is arranged on the buckling cover 11 in a vertically movable manner, the stop valve 21 is provided with a communication position for opening the communication hole 121 and a stop position for blocking the communication hole 121, the exhaust pipe 22 vertically penetrates through the buckling cover 11, the projection of the central line of the exhaust pipe 22 and the central line of the communication hole 121 in a horizontal plane are arranged in a staggered manner, the lower end of the exhaust pipe 22 extends into the exhaust cavity 13, the upper end of the exhaust pipe 22 penetrates out of the buckling cover 11, the pressure limiting valve 23 is arranged above the exhaust pipe 22 in a floatably covered manner, and the pressure limiting valve 23 is provided with a pressure limiting position for blocking the exhaust pipe 22 and an exhaust position for opening the exhaust pipe 22; the driving part 30 comprises a driving piece 31 and a transmission piece 32 in driving connection with the driving piece 31, the transmission piece 32 is rotatably arranged along a vertical axis, the transmission piece 32 can drive the stop valve 21 to switch between a communication position and a stop position, the transmission piece 32 can drive the pressure limiting valve 23 to switch between a pressure limiting position and an exhaust position, the pressure limiting valve 23 is positioned at the pressure limiting position when the stop valve 21 is positioned at the communication position, and the pressure limiting valve 23 is positioned at the exhaust position when the stop valve 21 is positioned at the stop position.

After cooking, the driving member 32 is driven by the driving member 31 to rotate the driving member 32 along a vertical axis, and the stop valve 21 is driven by the driving member 32 to move vertically from the stop position to the communication position, so that the stop valve 21 opens the communication hole 121 and steam in the pot 50 is discharged into the exhaust cavity 13 through the communication hole 121. Then, the driving member 31 drives the driving member 32 to rotate the driving member 32 along the vertical axis, and the driving member 32 drives the pressure limiting valve 23 to float from the pressure limiting position to the exhaust position, so that the pressure limiting valve 23 opens the exhaust pipe 22, and the steam in the exhaust cavity 13 is discharged out of the upper cover through the exhaust pipe 22. The above operation is repeated until the exhaustion is completed. After the exhaust is finished, the transmission member 32 is utilized to drive the stop valve 21 to move vertically from the stop position to the communication position, so that the stop valve 21 opens the communication hole 121 to return food entering the exhaust cavity 13 from the inside of the pot body 50 along with steam into the pot body 50 through the communication hole 121, and no food remains in the exhaust cavity 13. Therefore, after the cover is opened, no food flows out of the upper cover, and the use experience of a user is improved.

In the present embodiment, compared with the scheme of using two driving members to control the movement of the stop valve 21 and the pressure limiting valve 23 through two transmission structures respectively, the pressure limiting valve has the advantages of simple structure and convenient realization of miniaturization of the cooking utensil by using one driving member 31, i.e. controlling the stop valve 21 to open and close the communication hole 121 and simultaneously controlling the pressure limiting valve 23 to open and close the exhaust pipe 22.

And, through driving piece 31 drive transmission piece 32 along vertical axis rotation, the scheme of driving stop valve 21 and pressure limiting valve 23 in transmission piece 32 pivoted in-process is compared with the scheme that adopts solenoid valve drive stop valve 21 or pressure limiting valve 23 to remove, adopts simple mechanical structure, has improved the reliability that stop valve 21 and pressure limiting valve 23 removed.

When the stop valve 21 moves vertically from the stop position to the communication position, the pressure limiting valve 23 is located at the pressure limiting position for blocking the exhaust pipe 22. When the pressure limiting valve 23 is floated from the pressure limiting position to the exhaust position, the check valve 21 is positioned at the check position that closes the communication hole 121. By adopting the above-mentioned exhaust scheme, on the one hand, the quick exhaust of the pot body 50 can be realized, on the other hand, because the cooking utensil is in the exhaust, firstly will steam be discharged into the exhaust cavity 13, and then the upper cover is discharged from the exhaust cavity 13, through taking the exhaust cavity 13 as the intermediate transition, intake and exhaust are alternately carried out, only a small amount of food or no food basically can be remained in the exhaust cavity 13, even if the pressure is released through the pressure limiting valve 23 for a long time, the food in the pot body 50 can not overflow.

Of course, in the cooking process of the cooking utensil, by the above-mentioned exhaust scheme, the intermittent exhaust of the cooking cavity 51 can make the pressure in the cooking cavity 51 of the pot body 50 realize intermittent change, so as to achieve the effect of rolling food in the pot body 50, enhance the cooking effect of the food and make the food have better taste. Meanwhile, since the air-discharging cavity 13 is used as an intermediate transition, air-charging and air-discharging are alternately performed, only a small amount of food or no food is remained in the air-discharging cavity 13, and even if the pressure is released for a long time through the pressure limiting valve 23, the food in the pot body 50 is not overflowed.

Wherein, because the central line of the exhaust pipe 22 and the projection of the communication hole 121 in the horizontal plane are arranged in a staggered manner, when the transmission member 32 is utilized to drive the stop valve 21 to switch from the stop position to the communication position and drive the pressure limiting valve 23 to switch from the exhaust position to the pressure limiting position, when the high-pressure steam in the cooking cavity 51 and the tumbling food are discharged into the exhaust cavity 13 through the communication hole 121, the high-pressure steam can impact into the exhaust cavity 13 due to pressure release, but can not directly impact into the exhaust pipe 22, and further can not be directly discharged out of the cover body 10 through the exhaust pipe 22, thereby reducing the risk of slurry overflow.

It should be understood by those skilled in the art that the stop valve 21 and the pressure limiting valve 23 may be driven by the same driving member 31, or that the stop valve 21 and the pressure limiting valve 23 may be provided with different driving members.

As shown in fig. 1, 6, 8 and 11, the transmission member 32 includes a transmission wheel 321 and an exhaust cover 322 disposed at an upper end of the transmission wheel 321, the driving member 31 is drivingly connected to the transmission wheel 321 to drive the transmission wheel 321 to rotate about a vertical axis thereof, the transmission wheel 321 can drive the stop valve 21 to switch between a communication position and a stop position, the transmission wheel 321 can drive the exhaust cover 322 to rotate about a vertical axis thereof, and the exhaust cover 322 can drive the pressure limiting valve 23 to switch between a pressure limiting position and an exhaust position. By adopting the transmission piece 32 with the structure, the transmission wheel 321 can be used for driving the stop valve 21 to move, and the exhaust cover 322 can be used for driving the pressure limiting valve 23 to move, so that interference between driving structures of the stop valve and the pressure limiting valve can be avoided, and the reliability of the driving structures is enhanced.

The driving wheel 321 and the exhaust cover 322 may be moved simultaneously, so that the stop valve 21 is located at the stop position when the pressure limiting valve 23 is located at the exhaust position, and the stop valve 21 is located at the communication position when the pressure limiting valve 23 is located at the pressure limiting position. Of course, the driving wheel 321 and the exhaust cover 322 may be moved separately to realize that the stop valve 21 is located at the stop position when the pressure limiting valve 23 is located at the exhaust position, and the stop valve 21 is located at the communication position when the pressure limiting valve 23 is located at the pressure limiting position.

In this embodiment, the driving wheel 321 is connected to the exhaust cover 322, and when the driving wheel 321 drives the pressure limiting valve 23 to be located at the exhaust position, the exhaust cover 322 drives the stop valve 21 to be located at the stop position, and when the driving wheel 321 drives the pressure limiting valve 23 to be located at the pressure limiting position, the exhaust cover 322 drives the stop valve 21 to be located at the communication position. By adopting the mode that the driving wheel 321 is connected with the exhaust cover 322, the driving wheel 321 and the exhaust cover 322 can realize simultaneous movement, and then the pressure limiting valve 23 and the stop valve 21 can form a linkage relation, so that the effect of preventing the simultaneous movement of the stop valve 21 and the pressure limiting valve 23 can be controlled by one driving piece 31.

As shown in fig. 2 to 7 and 11, the driving wheel 321 is provided with a chute 331, the upper end of the stop valve 21 extends into the chute 331 and is attached to the top surface of the chute 331, and in the circumferential direction of the driving wheel 321, the height of the top surface of the chute 331 increases and decreases, so that the stop valve 21 switches between the communication position and the stop position. Through setting the top surface of spout 331 as the inclined plane, utilize the change of the height of inclined plane in vertical to drive the vertical removal of end logical valve 21, have simple structure, advantage that the operation is reliable.

In this embodiment, a rolling bearing is disposed at the upper end of the stop valve 21, so that the stop valve 21 can be more smoothly matched with the top surface of the chute 331, and no jamming is generated between the stop valve 21 and the chute 331 during the rotation of the driving wheel 321.

Specifically, the sliding groove 331 is disposed on the lower surface of the driving wheel 321, so that the volume of the driving wheel 321 can be reduced, which is advantageous for miniaturization of the cooking appliance.

The height of the top surface of the chute 331 increases and decreases, which means that the height of the top surface of the chute 331 with respect to the horizontal plane increases and decreases to form a slope.

As shown in fig. 2 to 7 and 11, the top surface of the chute 331 includes a first plane 332, a second plane 333, and two inclined planes 334 connecting the first plane 332 and the second plane 333 and being disposed obliquely, the first plane 332 has a height greater than that of the second plane 333, the stop valve 21 is located at a stop position when the upper end of the stop valve 21 is attached to the first plane 332, and the stop valve 21 is located at a communication position when the upper end of the stop valve 21 is attached to the second plane 333. By adopting the chute 331 with the structure, the sealing effect or the opening effect of the stop valve 21 can be better when the stop valve 21 is positioned at the stop position or the communication position by utilizing the structure of the plane when the inclined plane 334 is attached to the first plane 332 or the second plane 333 and driving the stop valve 21 to move vertically and when the upper end of the stop valve 21 is attached to the first plane 332 or the second plane 333.

In other embodiments, a groove arranged along the circumferential direction of the driving wheel 321 may be provided on the driving wheel 321, and the groove extends along the radial direction of the driving wheel 321, so that the height of the groove is increased and then reduced, and the upper end of the stop valve 21 is inserted into the groove, so that the stop valve 21 is driven to move vertically in the process of rotating the driving wheel 321.

As shown in fig. 2 to 7, the upper surface of the exhaust cover 322 is provided with a protrusion 341, the protrusion 341 has a jacking position attached to the pressure limiting valve 23 and a separation position separated from the pressure limiting valve 23, when the protrusion 341 is located at the jacking position, the pressure limiting valve 23 is located at the exhaust position, and when the protrusion 341 is located at the separation position, the pressure limiting valve 23 is located at the pressure limiting position, and the driving mode of driving the pressure limiting valve 23 by arranging the protrusion 341 on the upper surface of the exhaust cover 322 is adopted, so that the exhaust cover has the advantages of simple structure and convenience in arrangement.

In this embodiment, the guide inclined surface is provided on the protrusion 341, so that when the separation position of the protrusion 341 is switched to the jack-up position, the rotation process of the air discharge cover 322 is smoother, and no jamming occurs between the protrusion 341 and the pressure limiting valve 23.

It should be noted that, the upper cover further includes a control member and a detecting member for detecting a rotation position of the exhaust cover 322, and the control member is electrically connected to the detecting member and the driving member 31 respectively to control an operation state of the driving member 31. The rotational position of the exhaust cover 322 is detected by the detecting member, so that the control member can control the operating state of the driving member 31 to control the operating states of the driving wheel 321 and the exhaust cover 322.

The detecting member may be in the form of a photoelectric sensor, and the rotational position of the exhaust cover 322 is detected by the photoelectric sensor. The working state of the driving member 31 may be controlled by providing a mechanical limiting structure between the detecting member and the exhaust cover 322 and controlling the working state of the mechanical limiting structure by the control member.

As shown in fig. 8 and 10, the detecting element includes an optocoupler sensor 40, and two avoidance openings 3221 opposite to the optocoupler sensor 40 are symmetrically disposed on the outer edge of the exhaust cover 322. The detection mode of matching the optical coupler sensor 40 with the avoidance opening 3221 has the advantages of simple structure and convenience in setting.

Specifically, when the driving wheel 321 drives the exhaust cover 322 to rotate to the position of the avoidance opening 3221, the transmitting end and the receiving end of the optical coupler sensor 40 are conducted through the avoidance opening 3221 and send a conducting signal, and at this time, the control element can control the driving element 31 to stop working according to the conducting signal. By using the two escape openings 3221, when the driving member 31 is stopped, the stop valve 21 is located at the stop position and the communication position, and the corresponding pressure limiting valve 23 is located at the exhaust position and the pressure limiting position, respectively. When the exhaust cover 322 is rotated to the first escape opening 3221, the driving member 31 is stopped, the stop valve 21 is positioned at the stop position, and the pressure limiting valve 23 is positioned at the exhaust position, and at this time, the steam in the exhaust chamber 13 is exhausted out of the upper cover through the exhaust pipe 22. When the exhaust cavity 13 is exhausted, the control piece controls the driving piece 31 to work and enables the driving wheel 321 to drive the exhaust cover 322 to rotate continuously, and when the exhaust cover 322 rotates to the position of the second avoidance opening 3221, the control piece controls the driving piece 31 to stop working again, at the moment, the stop valve 21 is switched to the communication position, the pressure limiting valve 23 is switched to the pressure limiting position, and high-pressure steam in the cooking cavity 51 is discharged into the exhaust cavity 13 through the communication hole 121.

In the present embodiment, the avoidance opening 3221 is located at the outer periphery of the projection 341 so that the projection 341 does not interfere with the optocoupler sensor 40.

Wherein, the outer edge of the exhaust cover 322 is symmetrically provided with two avoidance openings 3221 opposite to the optocoupler sensor 40, which means that the transmitting end and the receiving end of the optocoupler sensor 40 can be conducted through the avoidance openings 3221.

As shown in fig. 8 and 9, the driving part 30 further includes a driving frame 35 disposed on the fastening cover 11, the driving frame 35 includes a frame body 351 and a driving shaft 352 rotatably penetrating the frame body 351, the upper end of the driving shaft 352 penetrates the frame body 351 and is in anti-rotation connection with the exhaust cover 322, and the lower end of the driving shaft 352 penetrates the frame body 351 and is in anti-rotation connection with the driving wheel 321. The transmission frame 35 with the structure is convenient for arranging the transmission wheel 321 and the exhaust cover 322 on the buckling cover 11 by using the frame body 351. The use of the drive shaft 352 facilitates connection of the drive wheel 321 to the exhaust cap 322 such that the drive wheel 321 may rotate the exhaust cap 322 via the drive shaft 352.

In the present embodiment, the frame 351 is fixed to the snap cover 11 by screws. The inside of the frame 351 is provided with a ball bearing, the outer ring of the ball bearing is connected with the frame 351 through a snap ring, and the inner ring of the ball bearing is connected with the transmission shaft 352, so that the transmission shaft 352 can rotate along the axis of the transmission shaft.

The upper end of the transmission shaft 352 is in a D-shaped shaft structure, the exhaust cover 322 is provided with a D-shaped hole, and the D-shaped shaft is inserted into the D-shaped hole to form a rotation-stopping connection. The lower end of the transmission shaft 352 is connected with the transmission wheel 321 through a waist-shaped shaft and a waist-shaped hole.

Specifically, the photo-coupler sensor 40 is disposed on the frame 351.

As shown in fig. 3 and 6, the exhaust assembly 20 further includes a return spring 24 sleeved on the outer periphery of the stop valve 21, an annular boss 211 is provided on the outer side wall of the stop valve 21, the lower end of the return spring 24 abuts against the fastening cover 11, and the upper end of the return spring 24 abuts against the lower surface of the annular boss 211. With the return spring 24, the return force can be provided by the elastic force of the return spring 24, so that the stop valve 21 is automatically reset from the stop position to the communication position.

Specifically, when the stop valve 21 is switched from the communication position to the stop position, the return spring 24 is in a compressed state.

As shown in fig. 3 and 6, the exhaust assembly 20 further includes a sealing ring 25 fixedly disposed on the fastening cover 11, an inner wall of the sealing ring 25 is attached to an outer side wall of the stop valve 21, and an outer wall of the sealing ring 25 is attached to the fastening cover 11. The sealing ring 25 can form a sealing effect, so that steam in the exhaust cavity 13 can not enter the buckling cover 11 through a gap between the stop valve 21 and the buckling cover 11, and damage to components in the buckling cover 11 is prevented.

In the present embodiment, the lower end of the stop valve 21 is further provided with a stop seal ring, and the stop seal ring is covered at the communication hole 121 when the stop valve 21 is in the stop position.

As shown in fig. 8, 10 and 13, the driving member 31 includes a driving motor 311 and a gear 312 drivingly connected to the driving motor 311, a first gear ring 3211 is provided on an outer side wall of the driving wheel 321, and the gear 312 is provided with a second gear ring 3121 engaged with the first gear ring 3211. The transmission mode of gear engagement is adopted, and the transmission mechanism has the advantages of simple and reliable transmission structure.

In the present embodiment, the driving motor 311 is provided on the snap-fit cover 11.

Yet another embodiment of the present application provides a cooking appliance including a pot 50 and an upper cover, the pot 50 having a cooking cavity 51; the upper cover is openably and closably provided on the pot 50, and the open-stop valve 21 of the upper cover has a communication position to open the communication hole 121 to communicate the cooking cavity 51 and the exhaust cavity 13 and a open-stop position to block the communication hole 121 to isolate the cooking cavity 51 and the exhaust cavity 13, and is provided as described above. With the cooking appliance provided by the above, after the exhaust is finished, the transmission member 32 is used for driving the stop valve 21 to move vertically from the stop position to the communication position, so that the stop valve 21 opens the communication hole 121 to enable food entering the exhaust cavity 13 from the inside of the pot body 50 along with steam to flow back into the pot body 50 through the communication hole 121, and no food remains in the exhaust cavity 13. Therefore, after the cover is opened, no food flows out of the upper cover, and the use experience of a user is improved.

Specifically, a pot sealing ring is provided between the inner lid 12 and the pot 50, and when the upper lid is provided on the pot 50, the inner lid 12 and the pot 50 are sealed by the pot sealing ring to form a closed cooking cavity 51.

The cooking utensil comprises an electric cooker or an electric pressure cooker or a multifunctional heating cooker 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 exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one 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 specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present application, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative 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 in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (13)

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

the cover body (10) comprises a buckling cover (11) with cover teeth and an inner cover (12) positioned below the buckling cover (11), a space between the buckling cover (11) and the inner cover (12) forms an exhaust cavity (13), and the inner cover (12) is provided with a communication hole (121) penetrating through the exhaust cavity;

the exhaust assembly (20) comprises a stop valve (21), an exhaust pipe (22) and a pressure limiting valve (23), wherein the stop valve (21) is vertically movably arranged on the buckling cover (11), the stop valve (21) is provided with a communication position for opening the communication hole (121) and a stop position for blocking the communication hole (121), the exhaust pipe (22) vertically penetrates through the buckling cover (11), the projection of the central line of the exhaust pipe (22) and the central line of the communication hole (121) in a horizontal plane is arranged in a staggered mode, the lower end of the exhaust pipe (22) extends into the exhaust cavity (13), the upper end of the exhaust pipe (22) penetrates out of the buckling cover (11), the pressure limiting valve (23) is arranged above the exhaust pipe (22) in a floating mode, and the pressure limiting valve (23) is provided with a pressure limiting position for blocking the exhaust pipe (22) and an exhaust position for opening the exhaust pipe (22);

the driving part (30) comprises a driving piece (31) and a transmission piece (32) in driving connection with the driving piece (31), the transmission piece (32) is rotatably arranged along a vertical axis, the transmission piece (32) can drive the stop valve (21) to be switched between the communication position and the stop position, the transmission piece (32) can drive the pressure limiting valve (23) to be switched between the pressure limiting position and the exhaust position, the pressure limiting valve (23) is positioned at the pressure limiting position when the stop valve (21) is positioned at the communication position, and the pressure limiting valve (23) is positioned at the exhaust position when the stop valve (21) is positioned at the stop position.

2. Upper cover according to claim 1, characterized in that the transmission member (32) comprises a transmission wheel (321) and a vent cover (322) arranged at the upper end of the transmission wheel (321), the driving member (31) is in driving connection with the transmission wheel (321) to drive the transmission wheel (321) to rotate around the vertical axis thereof, the transmission wheel (321) can drive the stop valve (21) to switch between the communication position and the stop position, the transmission wheel (321) can drive the vent cover (322) to rotate around the vertical axis thereof, and the vent cover (322) can drive the pressure limiting valve (23) to switch between the pressure limiting position and the vent position.

3. The upper cover according to claim 2, wherein the driving wheel (321) is connected with the exhaust cover (322), when the driving wheel (321) drives the pressure limiting valve (23) to be located at the exhaust position, the exhaust cover (322) drives the stop valve (21) to be located at the stop position, and when the driving wheel (321) drives the pressure limiting valve (23) to be located at the pressure limiting position, the exhaust cover (322) drives the stop valve (21) to be located at the communication position.

4. The upper cover according to claim 2, wherein a chute (331) is provided on the driving wheel (321), the upper end of the stop valve (21) extends into the chute (331) and is attached to the top surface of the chute (331), and in the circumferential direction of the driving wheel (321), the height of the top surface of the chute (331) increases and decreases, so that the stop valve (21) is switched between the communication position and the stop position.

5. The upper cover according to claim 4, wherein the top surface of the chute (331) comprises a first plane (332), a second plane (333) and two inclined planes (334) connecting the first plane (332) and the second plane (333) and being obliquely arranged, the first plane (332) has a height greater than that of the second plane (333), the stop valve (21) is located at the stop position when the upper end of the stop valve (21) is attached to the first plane (332), and the stop valve (21) is located at the communication position when the upper end of the stop valve (21) is attached to the second plane (333).

6. The upper cover according to claim 2, characterized in that the upper surface of the exhaust cover (322) is provided with a protrusion (341), the protrusion (341) having a jack-up position to be fitted with the pressure limiting valve (23) and a separation position to be separated from the pressure limiting valve (23), the pressure limiting valve (23) being located at the exhaust position when the protrusion (341) is located at the jack-up position and the pressure limiting valve (23) being located at the pressure limiting position when the protrusion (341) is located at the separation position.

7. The upper cover according to claim 2, further comprising a control member and a detecting member detecting a rotational position of the exhaust cover (322), the control member being electrically connected to the detecting member and the driving member (31), respectively, to control an operation state of the driving member (31).

8. The upper cover according to claim 7, wherein the detecting member comprises an optocoupler sensor (40), and two avoidance openings (3221) opposite to the optocoupler sensor (40) are symmetrically arranged on the outer edge of the exhaust cover (322).

9. A cover according to claim 3, wherein the driving part (30) further comprises a transmission frame (35) arranged on the buckling cover (11), the transmission frame (35) comprises a frame body (351) and a transmission shaft (352) rotatably penetrating the frame body (351), the upper end of the transmission shaft (352) penetrates out of the frame body (351) and is in rotation-stopping connection with the exhaust cover (322), and the lower end of the transmission shaft (352) penetrates out of the frame body (351) and is in rotation-stopping connection with the transmission wheel (321).

10. The upper cover according to claim 1, wherein the exhaust assembly (20) further comprises a return spring (24) sleeved on the periphery of the stop valve (21), an annular boss (211) is arranged on the outer side wall of the stop valve (21), the lower end of the return spring (24) is abutted against the buckling cover (11), and the upper end of the return spring (24) is abutted against the lower surface of the annular boss (211).

11. The upper cover according to claim 1, wherein the exhaust assembly (20) further comprises a sealing ring (25) fixedly arranged on the buckling cover (11), the inner wall of the sealing ring (25) is attached to the outer side wall of the stop valve (21), and the outer wall of the sealing ring (25) is attached to the buckling cover (11).

12. The upper cover according to claim 2, characterized in that the driving member (31) comprises a driving motor (311) and a gear (312) in driving connection with the driving motor (311), a first gear ring (3211) is provided on the outer side wall of the driving wheel (321), and the gear (312) is provided with a second gear ring (3121) in engagement with the first gear ring (3211).

13. A cooking appliance, the cooking appliance comprising:

a pan body (50) having a cooking cavity (51);

an upper cover which is openably and closably provided on the pan body (50), the open-stop valve (21) of which has a communication position to open the communication hole (121) to communicate the cooking chamber (51) and the exhaust chamber (13) and a close-stop position to close the communication hole (121) to isolate the cooking chamber (51) and the exhaust chamber (13), the upper cover being the upper cover according to any one of claims 1 to 12.