CN215777453U - Pressure-free valve, upper cover and cooking utensil - Google Patents

Abstract

The present invention provides a non-pressure valve, an upper cover and a cooking appliance, the non-pressure valve comprising: the valve seat is provided with a mounting hole and an exhaust port communicated with the mounting hole, and the mounting hole penetrates through the lower end of the valve seat; the valve core comprises a valve rod and a sealing seat arranged at the lower end of the valve rod, the valve rod can penetrate through the mounting hole in a vertically moving mode, an exhaust channel is arranged between the side wall of the valve rod and the wall of the mounting hole, and the exhaust channel is communicated with the exhaust port; the sealing seat is located below the valve seat and provided with a sealing position attached to the lower end of the valve seat and an exhaust position separated from the lower end of the valve seat, and when the sealing seat is located at the sealing position, the sealing seat seals the exhaust channel. Through the technical scheme that this application provided, can solve the problem that there is sealed failure risk in the no pressure valve among the correlation technique.

Description

Pressure-free valve, upper cover and cooking utensil

Technical Field

The utility model relates to the technical field of small household appliances, in particular to a non-pressure valve, an upper cover and a cooking appliance.

Background

The electric pressure cooker comprises a cooker body and an upper cover, wherein the upper cover is arranged on the cooker body in an openable manner. In order to enable the electric pressure cooker to have the function of one cooker with multiple purposes, the upper cover is provided with a pressure limiting valve and a non-pressure valve, so that the electric pressure cooker can be switched between pressure cooking and non-pressure cooking. When the electric pressure cooker is used for pressure cooking, the non-pressure valve is in a blocking state, and the pressure limiting valve can be opened according to the pressure in the cooker. When the electric pressure cooker is used for non-pressure cooking, the non-pressure valve is in an open state, and the cooker body can be communicated with the outside through the non-pressure valve.

In the related art, there is a risk of a sealing failure of a non-pressure valve when pressure cooking is performed using an electric pressure cooker.

SUMMERY OF THE UTILITY MODEL

The utility model provides a non-pressure valve, an upper cover and a cooking utensil, and aims to solve the problem that the non-pressure valve in the related art has sealing failure risks.

According to an aspect of the present invention, there is provided a non-pressure valve, comprising: the valve seat is provided with a mounting hole and an exhaust port communicated with the mounting hole, and the mounting hole penetrates through the lower end of the valve seat; the valve core comprises a valve rod and a sealing seat arranged at the lower end of the valve rod, the valve rod can penetrate through the mounting hole in a vertically moving mode, an exhaust channel is arranged between the side wall of the valve rod and the wall of the mounting hole, and the exhaust channel is communicated with the exhaust port; the sealing seat is located below the valve seat and provided with a sealing position attached to the lower end of the valve seat and an exhaust position separated from the lower end of the valve seat, and when the sealing seat is located at the sealing position, the sealing seat seals the exhaust channel.

By applying the technical scheme of the utility model, when the cooking utensil is used for non-pressure cooking, the sealing seat is positioned at the exhaust position, the sealing seat is separated from the lower end of the valve seat at the moment, and the gas in the pot body can be exhausted to the outside through the exhaust channel and the exhaust port. When the pressure cooking is carried out by using the cooking appliance, the sealing seat is positioned at the blocking position, and the sealing seat is attached to the lower end of the valve seat, so that the gas in the pot cannot leak out through the exhaust passage and the exhaust port. And because the seal receptacle is located the below of disk seat, when the seal receptacle is located the shutoff position, the lower extreme of seal receptacle and disk seat is laminated mutually, and after the pressure in the pot rose, the gas in the pot can exert ascending effort to the seal receptacle for the seal receptacle is inseparabler with the lower extreme laminating ground of disk seat, can promote the sealed effect of no pressure valve, reduces or eliminates the risk that no pressure valve appears sealed inefficacy.

Furthermore, a plurality of partition parts are arranged on the side wall of the valve rod, the partition parts extend along the axial direction of the valve rod and are arranged at intervals along the circumferential direction of the valve rod, the partition parts are in clearance fit with the hole wall of the mounting hole, a plurality of exhaust channels are formed, and two adjacent partition parts, the side wall of the valve rod and the hole wall of the mounting hole jointly enclose one exhaust channel; or, be provided with a plurality of partitions on the pore wall of mounting hole, a plurality of partitions extend along the axial of disk seat and set up along the circumference interval of disk seat, and partition and the lateral wall clearance fit of valve rod, exhaust passage are a plurality of, and two adjacent partitions, the lateral wall of valve rod and the pore wall of mounting hole enclose into an exhaust passage jointly. Can reciprocate along the mounting hole to the valve rod through setting up a plurality of partitions and play the guide effect to above-mentioned structure forms exhaust passage, and exhaust passage has the exhaust size that is big enough, is convenient for realize quick exhaust.

Further, the disk seat includes pedestal, roof and a plurality of splice bar, and the roof is located the top of pedestal, and the upper end and the roof of splice bar are connected, and the lower extreme and the pedestal of splice bar are connected, form the gas vent between pedestal, roof and a plurality of splice bar. By adopting the structure, the exhaust port has a large enough exhaust area, and when the cooking appliance is in a non-pressure cooking state, even if the pressure in the cooking cavity rises quickly, the gas in the cooking cavity can be exhausted from the exhaust ports through the exhaust channel.

Further, the upper end of disk seat is provided with the guiding hole, and the movably pilot hole of wearing to locate of upper end of valve rod. Utilize the guiding hole can form the guide effect to the upper end of valve rod, make the valve rod reciprocate along the guiding hole, avoid the valve rod to take place to rock at the in-process that removes.

Furthermore, the partition part is a partition plate, and the partition plate has the advantages of simple structure and convenience in processing.

Further, the seal receptacle includes sealed main part and annular plate, and the valve rod is connected with the upper end of sealed main part, and the annular plate is connected with the lateral wall of sealed main part and is located the lower extreme of sealed main part, and the lower extreme of disk seat has heavy platform, and sealed main part is located heavy platform, and the annular plate is laminated mutually with the lower extreme of disk seat. The sealing main body is positioned in the sinking platform, the annular plate is tightly attached to the lower end of the valve seat, and when the cooking appliance is in a pressure cooking state, the sealing seat and the lower end of the valve seat can form sealing.

Further, the non-pressure valve further comprises a sealing ring, a ring groove is formed in the side wall of the sealing main body, the inner side wall of the sealing ring is attached to the inner wall of the ring groove, and the outer side wall of the sealing ring protrudes out of the side wall of the sealing main body and is attached to the side wall of the sinking platform. The inner side wall of the sealing ring is attached to the outer side wall of the sealing main body, the outer side wall of the sealing ring is attached to the side wall of the sinking platform on the valve seat, a second seal is formed, and the sealing effect is further improved.

Furthermore, the non-pressure valve also comprises a return spring, the return spring is sleeved on the side wall of the valve rod, the first end of the return spring is abutted against the upper end of the valve seat, and the second end of the return spring applies elastic force to the valve rod so that the valve core is kept at the blocking position. Through setting up reset spring, when cooking utensil is in pressure culinary art state, reset spring applys elastic force to the valve rod, makes the valve rod rise, and the seal receptacle of case lower extreme is laminated with the lower extreme of disk seat mutually, and the case is located the shutoff position this moment.

Furthermore, the non-pressure valve also comprises a valve cover positioned above the valve seat, the valve cover is connected with the upper end of the valve rod, and the second end of the reset spring is abutted against the valve cover. Through setting up the valve gap, be connected the valve gap with the valve rod, when reset spring applyed the elastic force to the valve gap, the valve gap can upwards move and drive the valve rod and rise, makes the case remove to the shutoff position.

According to another aspect of the present invention, there is provided an upper cover, including: a cover body; the pressure limiting valve is arranged on the cover body; the disk seat setting of no pressure valve is on the lid, and no pressure valve is the no pressure valve that above-mentioned provided. When the upper cover provided by the utility model is used for pressure cooking by using a cooking appliance, the sealing seat is positioned at the blocking position and is attached to the lower end of the valve seat, and the gas in the cooker cannot leak out through the exhaust channel and the exhaust port. When the cooking appliance is in a pressure cooking state, the pressure limiting valve can enable the cooking cavity to cook food under certain pressure, and when the pressure exceeds the exhaust pressure, pressure relief is achieved through the pressure limiting valve. And because the seal receptacle is located the below of disk seat, after the pressure in the pot rose, the gas in the pot can exert ascending effort to the seal receptacle for the seal receptacle is inseparabler with the lower extreme laminating of disk seat, can promote the sealed effect of no pressure valve, reduces or eliminates the risk that no pressure valve appears sealed the inefficacy.

The upper cover further comprises a handle, the cover body comprises a fixed cover and a buckling cover, cover teeth are arranged on the buckling cover, the handle is arranged on the fixed cover and can drive the buckling cover to rotate relative to the fixed cover, the handle is utilized to drive the buckling cover to rotate, the cover teeth on the buckling cover and pot teeth on the pot body are meshed or separated, and therefore the upper cover and the pot body are locked or unlocked; the valve seat is arranged on the buckling cover and penetrates through the fixing cover, the driving piece is arranged on the fixing cover and can drive the valve core of the non-pressure valve to move between the blocking position and the exhaust position, and by adopting the structure, the upper cover can drive the valve core to move between the blocking position and the exhaust position by using the driving piece when being locked and unlocked, so that the pressure cooking and the non-pressure cooking are switched; the driving piece is including setting up the pole of bending on the fixed lid, and when the relatively fixed lid of lock lid rotated, the pole of bending can drive the case and remove between shutoff position and exhaust position, rotates handle drive lock lid and rotates, and then the lock lid moves down with the movable valve lid to realize that the case descends, no pressure valve is opened. When the driving piece is separated from the valve cover, the valve core is lifted and reset to a blocking position by the elastic force of the reset spring; the upper cover also comprises a sealing element and a pressing plate, the pressing plate presses the sealing element on the cover body, the sealing element is provided with a first sealing hole and a second sealing hole, the valve seat is arranged in the first sealing hole in a penetrating manner, the pressure limiting valve comprises a valve cap and an exhaust rod, the valve cap is arranged on the exhaust rod in a floating manner, the exhaust rod is arranged in the second sealing hole in a penetrating manner, and the sealing element is pressed on the cover body by the pressing plate through the arrangement of the sealing element, so that sealing is formed on both the pressureless valve and the pressure limiting valve; the fixed cover comprises a surface cover and a lining positioned below the surface cover, the surface cover plays a role in protecting and covering the cover body, and parts of the fixed cover are arranged on the lining; the upper cover also comprises a steam cover, the steam cover is covered above the pressure limiting valve and the non-pressure valve, gas exhausted from the pressure limiting valve and the non-pressure valve is exhausted through the steam cover, the pressure limiting valve and the non-pressure valve can be protected by the steam cover, and the integrity of the upper cover is further enhanced by the steam cover.

According to still another aspect of the present invention, there is provided a cooking appliance including: a pan body; the upper cover can be covered on the pot body in an opening and closing manner, and the upper cover is the upper cover provided above. When the pressure cooking is carried out by using the cooking appliance, the sealing seat is positioned at the blocking position, the sealing seat is attached to the lower end of the valve seat, and the gas in the pot cannot leak out through the exhaust passage and the exhaust port. And because the seal receptacle is located the below of disk seat, after the pressure in the pot rose, the gas in the pot can exert ascending effort to the seal receptacle for the seal receptacle is inseparabler with the lower extreme laminating of disk seat, can promote the sealed effect of no pressure valve, reduces or eliminates the risk that no pressure valve appears sealed the inefficacy.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 illustrates an exploded view of a non-pressure valve provided in accordance with an embodiment of the present invention;

FIG. 2 illustrates an exploded view of another perspective of a non-pressurized valve provided in accordance with an embodiment of the present invention;

fig. 3 illustrates an exploded view of a cooking appliance provided according to an embodiment of the present invention;

fig. 4 is an exploded view of another perspective of a cooking appliance provided in accordance with an embodiment of the present invention;

FIG. 5 shows a schematic diagram of the structure of the pressureless valve of FIG. 3;

fig. 6 is a sectional view illustrating pressureless cooking performed by the cooking appliance according to the embodiment of the present invention;

FIG. 7 shows a partial enlarged view at A in FIG. 6;

FIG. 8 shows a schematic view of the exhaust passage at A in FIG. 6;

fig. 9 illustrates a cross-sectional view of a cooking appliance according to an embodiment of the present invention performing pressure cooking;

fig. 10 shows a partial enlarged view at B in fig. 9.

Wherein the figures include the following reference numerals:

10. a valve seat; 11. mounting holes; 12. an exhaust port; 13. a base body; 14. a top plate; 141. a guide hole; 15. connecting ribs; 16. sinking a platform; 20. a valve core; 21. a valve stem; 211. a partition portion; 22. a sealing seat; 221. a sealing body; 2211. an annular groove; 222. an annular plate; 23. an exhaust passage; 24. a valve cover; 30. a seal ring; 40. a return spring; 50. a cover body; 51. a fixed cover; 511. a drive member; 5111. bending the rod; 512. a face cover; 513. a liner; 52. a snap-fit cover; 60. a pressure limiting valve; 61. a bonnet; 62. an exhaust rod; 70. a handle; 80. a seal member; 90. pressing a plate; 100. a steam hood; 110. and (4) a pot body.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, an embodiment of the present invention provides a non-pressure valve, which includes a valve seat 10 and a valve core 20, wherein the valve seat 10 has a mounting hole 11 and an exhaust port 12 communicated with the mounting hole 11, and the mounting hole 11 extends in an axial direction of the valve seat 10 and penetrates through a lower end of the valve seat 10. The valve core 20 comprises a valve rod 21 and a sealing seat 22 arranged at the lower end of the valve rod 21, the valve rod 21 can vertically move and penetrate through the mounting hole 11, an exhaust channel 23 is arranged between the side wall of the valve rod 21 and the hole wall of the mounting hole 11, and the exhaust channel 23 is communicated with the exhaust port 12. The seal seat 22 is located below the valve seat 10, the seal seat 22 has a sealing position attached to the lower end of the valve seat 10 and an exhaust position separated from the lower end of the valve seat 10, and when the seal seat 22 is located at the sealing position, the seal seat 22 seals the exhaust passage 23.

By applying the technical scheme of the utility model, when the cooking utensil is used for non-pressure cooking, the sealing seat 22 is positioned at the exhaust position, at the moment, the sealing seat 22 is separated from the lower end of the valve seat 10, and the gas in the pot body can be exhausted to the outside through the exhaust channel 23 and the exhaust port 12. When pressure cooking is performed by using the cooking appliance, the sealing seat 22 is located at the blocking position, and the sealing seat 22 is attached to the lower end of the valve seat 10, so that the gas in the pot does not leak out through the exhaust passage 23 and the exhaust port 12. Moreover, because the sealing seat 22 is located below the valve seat 10, when the sealing seat 22 is located at the blocking position, the sealing seat 22 is attached to the lower end of the valve seat 10, and after the pressure in the cooker rises, the gas in the cooker exerts an upward acting force on the sealing seat 22, so that the sealing seat 22 is attached to the lower end of the valve seat 10 more tightly, the sealing effect of the non-pressure valve can be improved, and the risk of sealing failure of the non-pressure valve is reduced or eliminated.

The sealing seat 22 has a sealing position in contact with the lower end of the valve seat 10 and a venting position separated from the lower end of the valve seat 10, the sealing position being such that the valve rod 21 is raised and the sealing seat 22 is in contact with the lower end of the valve seat 10 when the cooking utensil is in a pressure cooking state, and the venting position being such that the valve rod 21 is lowered and the sealing seat 22 is separated from the lower end of the valve seat 10 when the cooking utensil is in a non-pressure cooking state.

In this embodiment, the upper end of the valve rod 21 can penetrate through the upper end of the valve seat 10, the lower end of the valve rod 21 can penetrate through the lower end of the valve seat 10, and the lower end of the valve seat 10 can be sealed by the sealing seat 22 at the lower end of the valve rod 21, so as to realize the sealing of the non-pressure valve. An elastic return element, for example, a return spring, is provided between the upper end of the valve rod 21 and the valve seat 10, and the return of the valve rod 21 can be achieved by the return spring.

As shown in fig. 1, the non-pressure valve includes a plurality of exhaust passages 23, and the plurality of exhaust passages 23 are provided at intervals in the circumferential direction of the valve stem 21. Adopt a plurality of exhaust passage 23 circumference to set up, when cooking utensil is in the non-pressure culinary art state, even pressure in the culinary art intracavity rises very fast, also can exhaust simultaneously through a plurality of exhaust passage 23, reach good culinary art effect.

As shown in fig. 1 and 2, a plurality of partitions 211 are disposed on the side wall of the valve rod 21, the partitions 211 extend in the axial direction of the valve rod 21 and are disposed at intervals in the circumferential direction of the valve rod 21, the partitions 211 are in clearance fit with the hole wall of the mounting hole 11, a plurality of exhaust passages 23 are provided, and two adjacent partitions 211, the side wall of the valve rod 21 and the hole wall of the mounting hole 11 jointly enclose one exhaust passage 23. The valve rod 21 can be guided to move up and down along the mounting hole 11 by providing the plurality of partitions 211, and the above structure forms the exhaust passage 23, and the exhaust passage 23 has a sufficiently large exhaust size, facilitating quick exhaust.

In other embodiments, a plurality of partitions 211 are disposed on the wall of the mounting hole 11, the partitions 211 extend in the axial direction of the valve seat 10 and are spaced apart from each other in the circumferential direction of the valve seat 10, the partitions 211 are in clearance fit with the side wall of the valve rod 21, the exhaust passages 23 are multiple, and two adjacent partitions 211, the side wall of the valve rod 21 and the wall of the mounting hole 11 jointly enclose one exhaust passage 23.

In the present embodiment, the partition 211 is provided on the side wall of the valve stem 21, which has an advantage of facilitating processing.

As shown in fig. 1, the valve seat 10 includes a seat body 13, a top plate 14 and a plurality of connecting ribs 15, the top plate 14 is located above the seat body 13, the upper ends of the connecting ribs 15 are connected to the top plate 14, the lower ends of the connecting ribs 15 are connected to the seat body 13, and an exhaust port 12 is formed between the seat body 13, the top plate 14 and the plurality of connecting ribs 15. With the above-described structure, the exhaust ports 12 have a sufficiently large exhaust area, and when the cooking appliance is in a non-pressure cooking state, even if the pressure in the cooking chamber rises quickly, the gas in the cooking chamber can be exhausted from the plurality of exhaust ports 12 through the exhaust passage 23.

As shown in fig. 1, the upper end of the valve seat 10 is provided with a guide hole 141, and the upper end of the valve rod 21 is movably inserted through the guide hole 141. Utilize guiding hole 141 can form the guide effect to the upper end of valve rod 21, make valve rod 21 reciprocate along guiding hole 141, avoid valve rod 21 to take place to rock at the in-process that removes.

In the present embodiment, the guide hole 141 is provided on the top plate 14, and a hole wall of the guide hole 141 is clearance-fitted to a side wall of the valve stem 21.

Particularly, the partition part 211 is a partition plate, and has the advantages of simple structure and convenience in processing.

As shown in fig. 1 and 2, the sealing seat 22 includes a sealing body 221 and an annular plate 222, the valve rod 21 is connected to the upper end of the sealing body 221, the annular plate 222 is connected to the sidewall of the sealing body 221 and located at the lower end of the sealing body 221, the lower end of the valve seat 10 has a sunken platform 16, the sealing body 221 is located in the sunken platform 16, and the annular plate 222 is attached to the lower end of the valve seat 10. By positioning the sealing body 221 in the sink 16 and closely attaching the annular plate 222 to the lower end of the valve seat 10, the sealing seat 22 can form a seal with the lower end of the valve seat 10 when the cooking utensil is in a pressure cooking state.

As shown in fig. 1, the non-pressure valve further includes a sealing ring 30, an annular groove 2211 is disposed on the side wall of the sealing main body 221, the inner side wall of the sealing ring 30 is attached to the inner wall of the annular groove 2211, and the outer side wall of the sealing ring 30 protrudes out of the side wall of the sealing main body 221 and is attached to the side wall of the sinking platform 16. The inner side wall of the sealing ring 30 is attached to the outer side wall of the sealing main body 221, and the outer side wall of the sealing ring 30 is attached to the side wall of the sinking platform 16 on the valve seat 10, so that a second seal is formed, and the sealing effect is further improved.

As shown in fig. 1, the non-pressure valve further includes a return spring 40, the return spring 40 is sleeved on a side wall of the valve rod 21, a first end of the return spring 40 abuts against an upper end of the valve seat 10, and a second end of the return spring 40 applies an elastic force to the valve rod 21, so that the valve core 20 is maintained at the blocking position. By providing the return spring 40, when the cooking appliance is in a pressure cooking state, the return spring 40 applies an elastic force to the valve stem 21 to raise the valve stem 21, and the seal seat 22 at the lower end of the valve element 20 is brought into contact with the lower end of the valve seat 10, and at this time, the valve element 20 is located at the blocking position.

As shown in fig. 1, the non-pressure valve further includes a valve cover 24 located above the valve seat 10, the valve cover 24 is connected to the upper end of the valve rod 21, and the second end of the return spring 40 abuts against the valve cover 24. By arranging the valve cover 24, the valve cover 24 is connected with the valve rod 21, and when the return spring 40 applies elastic force to the valve cover 24, the valve cover 24 moves upwards and drives the valve rod 21 to ascend, so that the valve core 20 moves to the blocking position.

Specifically, the upper end of the valve rod 21 is provided with a fixing hole, and the valve cover 24 can be connected with the valve rod 21 through the fixing hole, so that the valve rod 21 can be assembled and positioned.

As shown in fig. 3, 4 and 6, another embodiment of the present invention provides an upper cover, which includes a cover body 50, a pressure limiting valve 60 and a non-pressure valve, wherein a valve seat 10 of the non-pressure valve is disposed on the cover body 50, and the non-pressure valve is the non-pressure valve provided above. When the upper cover provided by the utility model is used for pressure cooking by using a cooking appliance, the sealing seat 22 is positioned at the blocking position, the sealing seat 22 is attached to the lower end of the valve seat 10, and the gas in the cooker cannot leak out through the exhaust channel 23 and the exhaust port 12. When the cooking appliance is in a pressure cooking state, the pressure limiting valve 60 can enable the cooking cavity to cook food under certain pressure, and when the pressure exceeds the exhaust pressure, the pressure is relieved through the pressure limiting valve 60. Moreover, because the sealing seat 22 is located below the valve seat 10, after the pressure in the cooker rises, the gas in the cooker exerts an upward acting force on the sealing seat 22, so that the sealing seat 22 is attached to the lower end of the valve seat 10 more tightly, the sealing effect of the non-pressure valve can be improved, and the risk of sealing failure of the non-pressure valve is reduced or eliminated.

As shown in fig. 3 to 10, the upper cover further includes a handle 70, the cover 50 includes a fixed cover 51 and a fastening cover 52, the fastening cover 52 is provided with cover teeth, the handle 70 is provided on the fixed cover 51, and the handle 70 can drive the fastening cover 52 to rotate relative to the fixed cover 51. The handle 70 is used for driving the buckling cover 52 to rotate, so that cover teeth on the buckling cover 52 are mutually meshed or separated with pot teeth on the pot body, and the upper cover and the pot body are locked or unlocked.

Wherein, a rotation handle is arranged on the fixed cover 51, the handle 70 rotates to drive the rotation handle to rotate, and the rotation handle is connected with the buckling cover 52 to drive the buckling cover 52 to rotate.

In the present embodiment, the valve seat 10 is provided on the engagement cover 52 and passes through the fixed cover 51, and the fixed cover 51 is provided with the actuator 511, and the actuator 511 can drive the valve body 20 of the non-pressure valve to move between the closing position and the exhaust position. With the structure, the upper cover can be locked and unlocked, and simultaneously the driving piece 511 drives the valve core 20 to move between the blocking position and the exhaust position, so that the pressure cooking and the non-pressure cooking are switched.

As shown in fig. 3 to 10, the driving member 511 includes a bending rod 5111 disposed on the fixed cover 51, and when the engaging cover 52 rotates relative to the fixed cover 51, the bending rod 5111 can drive the valve element 20 to move between the blocking position and the venting position. The handle 70 is rotated to drive the locking cover 52 to rotate, and the locking cover 52 drives the valve cover 24 to move downwards, so that the valve core 20 descends, and the non-pressure valve is opened. When the driver 511 is separated from the cap 24, the valve body 20 is lifted and returned to the blocking position by the elastic force of the return spring 40.

As shown in fig. 3 to 6, the upper cover further includes a sealing member 80 and a pressing plate 90, the pressing plate 90 presses the sealing member 80 onto the cover 50, the sealing member 80 has a first sealing hole and a second sealing hole, the valve seat 10 is inserted into the first sealing hole, the pressure limiting valve 60 includes a bonnet 61 and an exhaust rod 62, the bonnet 61 is floatably disposed on the exhaust rod 62, and the exhaust rod 62 is inserted into the second sealing hole. By providing the sealing member 80 and pressing the sealing member 80 against the cover 50 by the pressing plate 90, sealing is provided for both the pressureless valve and the pressure-limiting valve 60.

Wherein, the valve cap 61 is floatably disposed on the exhaust rod 62, which means that when the cooking utensil is in a pressure cooking state, the pressure in the cooking cavity is up but not up to the exhaust pressure, the valve cap 61 contacts with the exhaust rod 62 and forms a seal. When the exhaust pressure in the cooking cavity is reached, the gas entering the exhaust rod 62 pushes against the valve cap 61, the valve cap 61 rises, the pressure limiting valve 60 is opened, and the air leakage and pressure reduction are realized.

As shown in fig. 3 and 4, the fixing cover 51 includes a surface cover 512 and an inner liner 513 below the surface cover 512, the surface cover 512 protects and covers the cover body 50, and the components of the fixing cover 51 are disposed on the inner liner 513.

In this embodiment, the upper cover further comprises a steam hood 100, and the steam hood 100 is covered above the pressure limiting valve 60 and the non-pressure valve. The gas exhausted from the pressure limiting valve 60 and the non-pressure valve is exhausted through the steam cover 100, the pressure limiting valve 60 and the non-pressure valve can be protected by the steam cover 100, and the integrity of the upper cover is enhanced by the steam cover 100.

Wherein, the steam hood 100 is provided with an exhaust hole through which the gas is exhausted.

As shown in fig. 6 to 10, a further embodiment of the present invention provides a cooking appliance, which includes a pot body 110 and an upper cover, the upper cover is openably and closably covered on the pot body 110, and the upper cover is provided as the above-mentioned upper cover. When pressure cooking is carried out by using the cooking appliance, the sealing seat 22 is positioned at the blocking position, the sealing seat 22 is attached to the lower end of the valve seat 10, and gas in the pot cannot leak out through the exhaust passage 23 and the exhaust port 12. Moreover, because the sealing seat 22 is located below the valve seat 10, after the pressure in the cooker rises, the gas in the cooker exerts an upward acting force on the sealing seat 22, so that the sealing seat 22 is attached to the lower end of the valve seat 10 more tightly, the sealing effect of the non-pressure valve can be improved, and the risk of sealing failure of the non-pressure valve is reduced or eliminated.

The handle 70 is used for driving the rotation handle to rotate in a rotating mode, the rotation handle drives the buckling cover 52 to rotate, the cover teeth are separated from the pot teeth, meanwhile, a non-pressure valve on the buckling cover 52 rotates along with the buckling cover 52, the valve cover 24 is pressed down by the bending rod 5111, the valve cover 24 drives the valve rod 21 to descend, the sealing seat 22 of the valve core 20 is separated from the valve seat 10, the non-pressure valve is in an open state, the reset spring 40 is in a compressed state at the moment, and the pressure limiting valve 60 is in a blocking state. At this time, the cooking appliance is in a pressureless cooking state.

The handle 70 is used for rotationally driving the rotating handle to rotate, the rotating handle drives the buckling cover 52 to rotate, the cover teeth are meshed with the pot teeth, meanwhile, a non-pressure valve on the buckling cover 52 rotates along with the buckling cover 52, the valve cover 24 is separated from the bending rod 5111, the valve cover 24 moves upwards under the elastic force action of the reset spring 40, the valve cover 24 drives the valve core 20 to ascend, the sealing seat 22 of the valve core 20 is closed with the valve seat 10, the non-pressure valve is in a blocking state, and the pressure limiting valve 60 is also in a blocking state. At this time, the cooking appliance is in a pressure cooking state. When the pressure in the cooking utensil reaches the exhaust pressure, the gas entering the exhaust rod 62 pushes against the valve cap 61, the valve cap 61 rises to open the pressure limiting valve 60, and the pressure relief is realized.

In this embodiment, the cooking appliance includes an air fryer or an electric rice cooker or an electric pressure cooker or a multifunctional heating pot with 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.

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 unless specifically stated otherwise. 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 is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, 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 simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered 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 … …," "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 the terms have no special meanings unless otherwise stated, 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 (12)

1. A non-pressure valve, comprising:

a valve seat (10) having a mounting hole (11) and an exhaust port (12) communicating with the mounting hole (11), the mounting hole (11) passing through a lower end of the valve seat (10);

the valve core (20) comprises a valve rod (21) and a sealing seat (22) arranged at the lower end of the valve rod (21), the valve rod (21) can penetrate through the mounting hole (11) in a vertically moving mode, an exhaust channel (23) is arranged between the side wall of the valve rod (21) and the hole wall of the mounting hole (11), and the exhaust channel (23) is communicated with the exhaust port (12);

the sealing seat (22) is located below the valve seat (10), the sealing seat (22) is provided with a sealing position attached to the lower end of the valve seat (10) and a gas discharging position separated from the lower end of the valve seat (10), and when the sealing seat (22) is located at the sealing position, the sealing seat (22) seals the gas discharging passage (23).

2. A non-pressure valve according to claim 1,

a plurality of partition parts (211) are arranged on the side wall of the valve rod (21), the partition parts (211) extend along the axial direction of the valve rod (21) and are arranged at intervals along the circumferential direction of the valve rod (21), the partition parts (211) are in clearance fit with the hole wall of the mounting hole (11), a plurality of exhaust channels (23) are arranged, and two adjacent partition parts (211), the side wall of the valve rod (21) and the hole wall of the mounting hole (11) jointly enclose one exhaust channel (23); alternatively, the first and second electrodes may be,

be provided with a plurality of partitions (211) on the pore wall of mounting hole (11), it is a plurality of partition (211) are followed the axial extension of disk seat (10) and are followed the circumference interval setting of disk seat (10), partition (211) with the lateral wall clearance fit of valve rod (21), exhaust passage (23) are a plurality of, adjacent two partition (211), the lateral wall of valve rod (21) and the pore wall of mounting hole (11) encloses into one jointly exhaust passage (23).

3. The non-pressure valve according to claim 1, wherein the valve seat (10) comprises a seat body (13), a top plate (14) and a plurality of connecting ribs (15), the top plate (14) is located above the seat body (13), the upper ends of the connecting ribs (15) are connected with the top plate (14), the lower ends of the connecting ribs (15) are connected with the seat body (13), and the exhaust port (12) is formed between the seat body (13), the top plate (14) and the plurality of connecting ribs (15).

4. A non-pressure valve according to claim 1, wherein the upper end of the valve seat (10) is provided with a guide hole (141), and the upper end of the valve stem (21) is movably disposed through the guide hole (141).

5. A non-pressure valve according to claim 2, wherein the partition (211) is a partition plate.

6. A non-pressure valve according to any one of claims 1 to 5, wherein the sealing seat (22) comprises a sealing body (221) and an annular plate (222), the valve stem (21) is connected with the upper end of the sealing body (221), the annular plate (222) is connected with the side wall of the sealing body (221) and is located at the lower end of the sealing body (221), the lower end of the valve seat (10) is provided with a sunken platform (16), the sealing body (221) is located in the sunken platform (16), and the annular plate (222) is attached with the lower end of the valve seat (10).

7. The non-pressure valve according to claim 6, further comprising a sealing ring (30), wherein an annular groove (2211) is formed in the side wall of the sealing main body (221), the inner side wall of the sealing ring (30) is attached to the inner wall of the annular groove (2211), and the outer side wall of the sealing ring (30) protrudes out of the side wall of the sealing main body (221) and is attached to the side wall of the sinking platform (16).

8. The non-pressure valve according to claim 1, further comprising a return spring (40), wherein the return spring (40) is sleeved on a side wall of the valve rod (21), a first end of the return spring (40) abuts against an upper end of the valve seat (10), and a second end of the return spring (40) applies an elastic force to the valve rod (21) to keep the valve core (20) at the blocking position.

9. A non-pressure valve according to claim 8, further comprising a valve cover (24) located above the valve seat (10), the valve cover (24) being connected to the upper end of the valve stem (21), the second end of the return spring (40) abutting the valve cover (24).

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

a cover (50);

a pressure limiting valve (60), the pressure limiting valve (60) being disposed on the cover (50);

a non-pressure valve, the valve seat (10) of which is arranged on the cover (50), the non-pressure valve being as claimed in any one of claims 1 to 9.

11. The overcap of claim 10,

the upper cover further comprises a handle (70), the cover body (50) comprises a fixed cover (51) and a buckling cover (52), cover teeth (521) are arranged on the buckling cover (52), the handle (70) is arranged on the fixed cover (51), and the handle (70) can drive the buckling cover (52) to rotate relative to the fixed cover (51);

the valve seat (10) is arranged on the buckling cover (52) and penetrates through the fixed cover (51), a driving piece (511) is arranged on the fixed cover (51), and the driving piece (511) can drive the valve core (20) of the non-pressure valve to move between the blocking position and the exhaust position;

the driving piece (511) comprises a bending rod (5111) arranged on the fixed cover (51), and when the buckling cover (52) rotates relative to the fixed cover (51), the bending rod (5111) can drive the valve core (20) to move between the blocking position and the venting position;

the upper cover further comprises a sealing element (80) and a pressing plate (90), the pressing plate (90) presses the sealing element (80) on the cover body (50), the sealing element (80) is provided with a first sealing hole (81) and a second sealing hole (82), the valve seat (10) is arranged in the first sealing hole (81) in a penetrating mode, the pressure limiting valve (60) comprises a valve cap (61) and an exhaust rod (62), the valve cap (61) is arranged on the exhaust rod (62) in a floating mode, and the exhaust rod (62) is arranged in the second sealing hole (82) in a penetrating mode;

the fixed cover (51) comprises a face cover (512) and an inner liner (513) positioned below the face cover (512);

the upper cover further comprises a steam cover (100), and the steam cover (100) is covered above the pressure limiting valve (60) and the non-pressure valve.

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

a pan body (110);

the upper cover is covered on the pot body (110) in an openable and closable manner, and the upper cover is the upper cover in claim 10.

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