CN107550253B - Cooking utensil - Google Patents

Abstract

A cooking appliance, comprising: the pot body is used for containing food to be cooked; the pot cover is arranged on the pot body, a cover opening structure is arranged in the pot cover, and the cover opening structure is provided with a locking position for fixing the pot cover on the pot body and an unlocking position for separating the pot cover relative to the pot body; the application relates to an opening-stopping valve which is movably arranged in a pot cover, and comprises a valve body and an exhaust channel arranged in the valve body, wherein the exhaust channel is communicated with the inside of the pot body and the outside, a blocking piece and a resetting piece are arranged in the exhaust channel, the resetting piece applies elastic force towards the direction of the pot body to the blocking piece and enables the blocking piece to be in a blocking position under the condition of not receiving external force, when the pressure in the pot body exceeds preset safety pressure, the blocking piece is jacked by steam and moves to an avoiding position, and the problems of complicated parts, complex structure and high cost caused by the fact that the valve body structure is more in the pot cover of an electric pressure pot in the prior art are solved.

Description

Cooking utensil

Technical Field

The application relates to a cooking appliance, in particular to an improvement of a non-return valve of the cooking appliance.

Background

Electric pressure cookers in the market at present mostly have a non-return valve assembly, an exhaust valve assembly and a safety valve assembly. The function of the opening-stopping valve is that when pressure exists in the pot, the cover cannot be opened. The exhaust valve is used for controlling the cooking effect, and when the pressure in the cooker exceeds the set value of the program, the electromagnetic valve is controlled to push the exhaust valve to exhaust. The safety valve has the function of opening the exhaust when the exhaust valve fails or the exhaust channel is blocked and the pressure in the cooker exceeds the working pressure, so that the danger caused by the overhigh pressure in the cooker is avoided. The structure ensures that the pot cover is provided with a plurality of valve body components, has complicated parts, complex structure and high cost.

Disclosure of Invention

The application mainly aims to provide a cooking utensil which solves the problems of complicated parts, complex structure and high cost caused by a large number of valve body structures in a cover of an electric pressure cooker in the prior art.

In order to achieve the above object, the present application provides a cooking appliance comprising: the pot body is used for containing food to be cooked; the pot cover is arranged on the pot body, a cover opening structure is arranged in the pot cover, and the cover opening structure is provided with a locking position for fixing the pot cover on the pot body and an unlocking position for separating the pot cover relative to the pot body; the anti-opening valve is movably arranged in the pot cover, when the pressure in the pot body rises, the anti-opening valve is jacked up and enables the cover opening structure to be fixed at the locking position, wherein the anti-opening valve comprises a valve body and an exhaust channel arranged in the valve body, the exhaust channel is communicated with the inside of the pot body and the outside, a blocking piece and a resetting piece are arranged in the exhaust channel, the blocking piece is provided with a blocking position for blocking the exhaust channel and an avoidance position for opening the exhaust channel, the resetting piece applies elastic force towards the pot body to the blocking piece and enables the blocking piece to be in the blocking position under the condition of not receiving external force, when the pressure in the pot body exceeds preset safety pressure, the blocking piece is jacked up by steam and moves to the avoidance position so that the steam in the pot body is discharged to the outside through the exhaust channel, the anti-opening valve further comprises a clamping structure, and when the blocking piece is jacked up by the steam and moves to the avoidance position, the clamping structure is matched with the blocking piece, and the blocking piece cannot be pushed to the blocking position by the elastic force.

By applying the technical scheme of the application, the exhaust channel is arranged in the opening-stopping valve, and the plugging piece and the resetting piece are arranged in the exhaust channel. When the pressure in the pot body is too high, the blocking piece is jacked up by the pressure of steam, and at the moment, the blocking piece moves from the blocking position to the avoiding position and opens the exhaust channel, so that the steam in the pot body is discharged through the exhaust channel, and the pressure in the pot body is reduced. The structure ensures that the opening-stopping valve not only has the opening-stopping function of locking the pot cover when the pressure in the pot body is over high, but also can play the role of a safety valve for discharging high-pressure steam when the pressure in the pot body is over high, namely, the opening-stopping valve is realized through the valve body structure, and the safety valve is realized. The structure can reduce the number of the valve bodies in the pot cover, thereby simplifying the structure and reducing the cost. Therefore, the technical scheme of the application solves the problems of complicated parts, complex structure and high cost caused by the fact that the valve body structure in the cover of the electric pressure cooker in the prior art is more.

Further, the plugging piece comprises a push rod and a plug arranged on the push rod, the reset piece is arranged on the push rod in a penetrating way, two ends of the reset piece are respectively abutted with the valve body and the plug, and the plug plugs the exhaust channel under the action of the reset piece.

Further, the exhaust channel comprises a small-diameter section and a large-diameter section which are sequentially connected from bottom to top, a step surface is formed between the small-diameter section and the large-diameter section, and the plug is abutted with the step surface and seals the exhaust channel.

Further, the ejector rod comprises a first rod body and a second rod body which are respectively connected to two sides of the plug, wherein the first rod body and the plug are located in the large-diameter section, the second rod body is arranged in the small-diameter section in a penetrating mode, and a gap is formed between the second rod body and the small-diameter section to form a steam inlet.

Further, the second rod body is sleeved with a first annular sealing ring, the first annular sealing ring is located in the large-diameter section, and the first annular sealing ring is clamped between the plug and the step surface under the action of the resetting piece, so that the steam inlet is sealed.

Further, the clamping structure comprises a locking piece arranged in the exhaust channel, and when the ejector rod moves to the avoiding position, the locking piece is matched with the ejector rod so that the ejector rod is fixed at the avoiding position.

Further, a positioning groove is formed in the first rod body, the locking piece is a clamp spring, and when the ejector rod moves to the avoiding position, the clamp spring is embedded into the positioning groove so that the ejector rod is kept at the avoiding position.

Further, the top of valve body is provided with the accommodation recess, and the valve that ends open still includes the valve cap, and the fixed setting of valve cap is in the accommodation recess, and wherein, the valve cap is provided with first through-hole, and first body of rod upwards extends and wears to establish in first through-hole, has the clearance and forms steam outlet between first body of rod and the first through-hole.

Further, an accommodating space communicated with the first through hole is formed in the valve cap, and the locking piece is arranged in the accommodating space.

Further, the top end of the side wall of the accommodation recess is contracted inward and the bonnet is fixed in the accommodation recess.

Further, the pot cover comprises a pot cover main body and an inner pot cover detachably arranged on the pot cover main body, the opening-stopping valve is arranged on the inner pot cover, the opening-stopping valve further comprises a valve seat arranged on the inner pot cover, a second through hole is formed in the valve seat, and the valve body is movably arranged in the second through hole.

Further, the lower extreme of valve body is provided with the second annular seal circle, and the upper end of valve body is provided with the location step face, and the valve body is located on the disk seat through second annular seal circle and location step face.

Further, a first vent hole and a second vent hole are formed in the side wall of the valve body, and the first vent hole and the second vent hole are communicated with the exhaust channel.

Further, be provided with rotatable locking closure of being fixed in pot lid main part in the pot lid main part, the locking closure is equipped with the lid tooth, and the pot body is provided with the pot tooth, rotatory locking closure can make the lid tooth of locking closure interlock with the pot tooth of the pot body to make pot lid and pot body hasp, the structure of uncapping includes: the handle is rotatably arranged on the rotating rod at the upper side of the pot cover main body and is connected with the lock cover, and the rotating rod and the handle are coaxially arranged so that when the handle is rotated, the handle can drive the rotating rod to synchronously rotate, and then the rotating rod drives the lock cover to rotate, so that the rotating rod has a locking position and an unlocking position; wherein, be provided with the spout on the pot cover main part, the structure of uncapping still includes the slider of being connected with the bull stick, and when the bull stick rotated, the slider was slided in the spout, and when the internal pressure of pot risees, the valve of ending was stopped to open by jack-up and make the valve of ending to insert in the spout, and then makes the bull stick fix in the locking position.

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 a schematic structural view of an embodiment of a cooking appliance according to the present application;

fig. 2 is a schematic view showing a structure of the cooking appliance of fig. 1 in an opened state;

fig. 3 illustrates a schematic structure of an inner pot cover of the cooking appliance of fig. 2;

FIG. 4 shows an enlarged schematic view at A in FIG. 3;

FIG. 5 shows an exploded view of the check valve of the inner pot cover of FIG. 3;

FIG. 6 shows a schematic view of the engagement of the locking member and the closure member of FIG. 4 with the closure member of the stop-open valve in the closed position;

FIG. 7 shows a schematic view of the engagement of the locking member and the blocking member of the stop-open valve of FIG. 4 in the unseated position;

FIG. 8 shows a schematic cross-sectional view of the stop-open valve of FIG. 4 with the stop-open valve blocking member in the blocking position;

FIG. 9 is a schematic cross-sectional view of the stop-open valve of FIG. 4 with the stop-open valve closure member in the unseated position;

fig. 10 is a schematic view showing an internal structure of a pot cover of the cooking appliance of fig. 1;

FIG. 11 shows a schematic cross-sectional view of the lid of FIG. 10;

FIG. 12 is a schematic view showing the cooperation of the stop valve and the slider of the lid of FIG. 10 in the locked position;

FIG. 13 shows a schematic view of the engagement of the check valve and the slider of the lid of FIG. 10 in an unlocked position.

Wherein the above figures include the following reference numerals:

10. a pot body; 11. a pot tooth; 20. a pot cover; 21. a pot cover main body; 211. a chute; 212. a locking cover; 22. an inner pot cover; 30. a cover opening structure; 31. a handle; 32. a rotating rod; 33. a slide block; 40. a stop valve; 41. a valve body; 411. a receiving recess; 412. positioning the step surface; 413. a first vent hole; 414. a second vent hole; 42. an exhaust passage; 421. a small diameter section; 422. a large diameter section; 43. a blocking member; 431. a push rod; 432. a plug; 433. a first rod body; 434. a second rod body; 435. a positioning groove; 44. a reset member; 45. a first annular seal ring; 46. a locking member; 47. a valve cap; 471. a first through hole; 472. an accommodation space; 48. a valve seat; 481. a second through hole; 49. a second annular seal ring; 50. a steam inlet; 60. a steam outlet.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

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.

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 should be considered 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.

As shown in fig. 1 to 4, a cooking appliance of the present embodiment includes a pot body 10, a pot cover 20, a cover opening structure 30, and a non-opening valve 40. Wherein, the pot body 10 is used for containing food to be cooked, the pot cover 20 is arranged on the pot body 10, and the cover opening structure 30 is arranged in the pot cover 20. The lid opening structure 30 has a locking position to fix the lid 20 to the pot 10 and an unlocking position to enable the lid 20 to be separated with respect to the pot 10. The opening stop valve 40 is movably arranged in the pot cover 20, and when the pressure in the pot body 10 rises, the opening stop valve 40 is jacked up and the cover opening structure 30 is fixed at the locking position, wherein the opening stop valve 40 comprises a valve body 41 and an exhaust channel 42 arranged in the valve body 41, and the exhaust channel 42 is communicated with the inside of the pot body 10 and the outside. The blocking member 43 and the restoring member 44 are provided in the exhaust passage 42, the blocking member 43 has a blocking position for blocking the exhaust passage 42 and a retreating position for opening the exhaust passage 42, and the restoring member 44 applies an elastic force to the blocking member 43 in a direction toward the pot body 10 and makes the blocking member 43 be in the blocking position without receiving an external force.

When the pressure in the pot body 10 exceeds the preset safety pressure, the blocking piece 43 is jacked by steam and moves to the avoiding position, so that the steam in the pot body 10 is discharged to the outside through the exhaust channel 42, the pressure in the pot body 10 is reduced, the opening stop valve 40 further comprises a clamping structure, and when the blocking piece 43 is jacked by steam and moves to the avoiding position, the clamping structure is matched with the blocking piece 43, and the blocking piece 43 cannot be pushed to the blocking position by elastic force.

By applying the technical scheme of the application, the exhaust passage 42, the blocking piece 43 and the resetting piece 44 are arranged in the exhaust passage 42, and the opening stop valve 40 is internally provided with the exhaust passage 42. When the pressure in the pot body 10 is too high, the blocking piece 43 is pushed open by the pressure of the steam, and at the moment, the blocking piece 43 moves from the blocking position to the avoiding position and opens the exhaust channel 42, so that the steam in the pot body 10 is discharged through the exhaust channel 42, and the pressure in the pot body 10 is reduced. The above structure makes the opening stop valve 40 not only have the opening stop function of locking the pot cover 20 when pressure exists in the pot body 10, but also play the role of a safety valve for discharging high-pressure steam when the pressure in the pot body 10 is too high, namely, the opening stop valve function is realized through a valve body structure, and the safety valve function is realized. The above structure can reduce the number of the valve bodies 41 in the pot cover 20, thereby simplifying the structure and reducing the cost. Therefore, the technical scheme of the application solves the problems of complicated parts, complex structure and high cost caused by the fact that the valve body structure in the cover of the electric pressure cooker in the prior art is more.

As shown in fig. 4, in the technical solution of this embodiment, the blocking member 43 includes a push rod 431 and a plug 432 disposed on the push rod 431, the reset member 44 is disposed on the push rod 431 in a penetrating manner, two ends of the reset member 44 are respectively abutted with the valve body 41 and the plug 432, and the plug 432 blocks the exhaust channel 42 under the action of the reset member 44. Specifically, the plug 432 has an annular structure and is disposed coaxially with the top rod 431. The upper end of the reset piece 44 is abutted with the valve body 41, and the lower end of the reset piece 44 is abutted with the upper end of the plug 432, so that the plug 432 is propped against and seals the exhaust channel 42 under the elastic force of the reset piece 44 when the ejector rod 431 is in a natural state.

As shown in fig. 4, in the technical solution of the present embodiment, the exhaust passage 42 includes a small diameter section 421 and a large diameter section 422 sequentially connected from bottom to top, a step surface is formed between the small diameter section 421 and the large diameter section 422, and the plug 432 abuts against the step surface and seals the exhaust passage 42. Specifically, an annular step structure is formed between the large diameter section 422 and the small diameter section 421. The outer diameter of the plug 432 is larger than the inner diameter of the small diameter section 421, so that the plug 432 can be propped against the step surface.

As shown in fig. 4, in the technical solution of the present embodiment, the ejector rod 431 includes a first rod body 433 and a second rod body 434 connected to two sides of the plug 432, where the first rod body 433 and the plug 432 are located in the large-diameter section 422, the second rod body 434 is inserted in the small-diameter section 421, and a gap is formed between the second rod body 434 and the small-diameter section 421 and forms the steam inlet 50. Specifically, when the plug 432 is in the blocking position, the steam inlet 50 described above is closed by the lower surface of the plug 432. When the plug 432 is in the dodged position, the steam inlet 50 and the exhaust passage 42 communicate, thereby allowing high pressure steam to be exhausted to the outside.

As shown in fig. 4, in the technical solution of this embodiment, the second rod 434 is sleeved with a first annular sealing ring 45, where the first annular sealing ring 45 is located in the large-diameter section 422, and the first annular sealing ring 45 is clamped between the plug 432 and the step surface under the action of the resetting piece 44, so that the steam inlet 50 is sealed. Specifically, when the stopper 432 is in the blocking position, the first annular sealing ring 45 ensures that steam in the pot 10 does not leak from the gap between the stopper 432 and the step surface, thereby ensuring cooking quality.

As shown in fig. 5 to 9, in the technical solution of the present embodiment, the clamping structure includes a locking member 46 disposed in the exhaust channel 42, and when the ejector rod 431 moves to the avoiding position, the locking member 46 cooperates with the ejector rod 431 to fix the ejector rod 431 in the avoiding position. Specifically, a positioning slot 435 is provided on the first rod 433, the locking member 46 is a snap spring, and when the ejector rod 431 moves to the avoiding position, the snap spring is embedded into the positioning slot 435 to keep the ejector rod 431 at the avoiding position. As shown in fig. 6 and 8, in the technical solution of the present embodiment, when the plug 432 is at the plugging position, the snap spring is clamped on the outer peripheral surface of the first rod 433. The top rod 431 can move up and down at this time. As shown in fig. 6 and 9, when the plug 432 is at the avoiding position, the clamp spring is clamped in the positioning groove 435, the push rod 431 is propped against and cannot move at this time, the reset piece 44 cannot reset at this time, the stop valve 40 is continuously in the exhaust state, and the pressure in the pot body 10 is reduced.

As shown in fig. 9, in the technical solution of the present embodiment, a containing recess 411 is provided above the valve body 41, and the open stop valve 40 further includes a bonnet 47, where the bonnet 47 is fixedly disposed in the containing recess 411. Wherein, the valve cap 47 is provided with a first through hole 471, the first rod body 433 extends upward and penetrates into the first through hole 471, and a gap is formed between the first rod body 433 and the first through hole 471 and the steam outlet 60 is formed.

As shown in fig. 9, in the technical solution of the present embodiment, a housing space 472 communicating with a first through hole 471 is provided in the bonnet 47, and the locking member 46 is provided in the housing space 472.

As shown in fig. 4, in the technical solution of the present embodiment, the top end of the side wall of the accommodation recess 411 is contracted inward and the bonnet 47 is fixed in the accommodation recess 411. Specifically, the bonnet 47 may be secured within the receiving recess 411 in other manners, such as by a threaded connection or the like.

As shown in fig. 8, in the technical solution of the present embodiment, the pot cover 20 includes a pot cover main body 21 and an inner pot cover 22 detachably provided on the pot cover main body 21, and the opening stop valve 40 is provided on the inner pot cover 22. Wherein, the opening stop valve 40 further comprises a valve seat 48 provided on the inner pot cover 22, a second through hole 481 is provided on the valve seat 48, and the valve body 41 is movably provided in the second through hole 481. Specifically, the valve seat 48 is used to provide a mounting location for the check valve 40, and the valve seat 48 is fixedly disposed on the inner lid 22. The valve seat 48 may be fastened by screw threads or welded, and the specific fastening mode may be determined according to actual working requirements.

As shown in fig. 4, in the technical solution of the present embodiment, the lower end of the valve body 41 is provided with a second annular seal ring 49, the upper end of the valve body 41 is provided with a positioning step surface 412, and the valve body 41 is positioned on the valve seat 48 by the second annular seal ring 49 and the positioning step surface 412. Wherein the outer diameter of the second annular sealing ring 49 is larger than the inner diameter of the steam inlet 50, and the second annular sealing ring 49 is located below the steam inlet 50. Meanwhile, the outer diameter of the positioning step surface 412 is larger than the inner diameter of the exhaust passage 42. The above structure makes the valve body 41 limited between the second ring-shaped sealing ring 49 and the positioning step surface 412, thereby preventing the valve body 41 from separating from the inner pot cover 22

As shown in fig. 4, in the technical solution of the present embodiment, a first vent hole 413 and a second vent hole 414 are formed in a side wall of the valve body 41, and the first vent hole 413 and the second vent hole 414 are both in communication with the exhaust passage 42. The first ventilation holes 413 and the second ventilation holes 414 are used to discharge cool air in the pot 10 at the beginning of cooking.

As shown in fig. 1 and 10 to 13, in the technical solution of the present embodiment, a lock cover 212 rotatably fixed to a pot cover main body 21 is provided on a pot cover main body 21, a cover tooth is provided on the lock cover 212, a pot tooth 11 is provided on a pot body 10, and rotating the lock cover 212 can cause the cover tooth of the lock cover 212 to engage with the pot tooth 11 of the pot body 10, thereby locking the pot cover 20 with the pot body 10. The lid opening structure 30 includes a handle 31 and a rotating lever 32. Wherein, handle 31 rotationally sets up at pot cover main part 21 upside bull stick 32, bull stick 32 sets up on pot cover main part 21, bull stick 32 is connected with locking closure 212, bull stick 32 and handle 31 coaxial setting so that when rotating handle 31, handle 31 can drive bull stick 32 synchronous rotation, and then makes bull stick 32 drive locking closure 212 rotation, and bull stick 32 has locking position and unblock position. The pot cover main body 21 is provided with a sliding groove 211, the cover opening structure 30 further comprises a sliding block 33 connected with the rotating rod 32, when the rotating rod 32 rotates, the sliding block 33 slides in the sliding groove 211, and when the pressure in the pot body 10 rises, the opening stop valve 40 is jacked up and the opening stop valve 40 is embedded into the sliding groove 211, so that the rotating rod 32 is fixed at a locking position.

The operation of the non-return valve 40 will be described below with reference to fig. 12 and 13. As can be seen in fig. 12, the slider 33 has an elongated structure. The slider 33 slides in the slide groove 211. When the open stop valve 40 is in the unlock position, as shown in fig. 13, the open stop valve 40 is positioned below the slide groove 211, and the slider 33 can freely slide in the slide groove 211. When the stop valve 40 is in the unlocking position, as shown in fig. 12, the stop valve 40 is pushed into the sliding groove 211 by steam, specifically, is located at the end of the sliding groove 211, and at this time, the sliding groove 211 interferes with the stop valve 40 when sliding to the position of the stop valve 40, so that the sliding cannot be continued, and the lock cover 212 cannot rotate to the open position, at this time, the pot cover 20 is locked on the pot body 10.

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 (11)

1. A cooking appliance, comprising:

a pot body (10) for containing food to be cooked, wherein a heating device for heating the food to be cooked is arranged in the pot body (10);

a cover (20) arranged on the pot body (10), wherein a cover opening structure (30) is arranged in the cover (20), and the cover opening structure (30) is provided with a locking position for fixing the cover (20) on the pot body (10) and an unlocking position for separating the cover (20) relative to the pot body (10);

an opening stop valve (40) which is movably arranged in the pot cover (20), when the pressure in the pot body (10) rises, the opening stop valve (40) is jacked up and the cover opening structure (30) is fixed at the locking position,

wherein the open-stop valve (40) comprises a valve body (41) and an exhaust channel (42) arranged in the valve body (41), the exhaust channel (42) is communicated with the inside of the pot body (10) and the outside, a plugging piece (43) and a resetting piece (44) are arranged in the exhaust channel (42), the plugging piece (43) is provided with a plugging position for plugging the exhaust channel (42) and a avoiding position for opening the exhaust channel (42), the resetting piece (44) applies an elastic force towards the direction of the pot body (10) to the plugging piece (43) and enables the plugging piece (43) to be in the plugging position under the condition that the external force is not applied, when the pressure in the pot body (10) exceeds a preset safety pressure, the plugging piece (43) is jacked by steam and moves to the avoiding position, so that the steam in the pot body (10) is discharged to the outside through the exhaust channel (42) to reduce the pressure in the pot body (10), the resetting piece (431) is provided with the plug (431) and the two plug (432) and the plug (44) are respectively arranged at the two ends (431) and the plug (432) in a penetrating way, the plug (432) is used for plugging the exhaust channel (42) under the action of the reset piece (44), and the ejector rod (431) comprises a first rod body (433) and a second rod body (434) which are respectively connected to two sides of the plug (432);

the anti-open valve (40) further comprises a clamping structure, when the plugging piece (43) is jacked by steam and moves to the avoidance position, the clamping structure is matched with the plugging piece (43), the plugging piece (43) cannot be pushed to the plugging position by elastic force, the clamping structure comprises a locking piece (46) arranged in the exhaust channel (42), a positioning groove (435) is formed in the first rod body (433), the locking piece (46) is a clamp spring, and when the ejector rod (431) moves to the avoidance position, the clamp spring is embedded into the positioning groove (435) to enable the ejector rod (431) to be kept at the avoidance position.

2. The cooking appliance according to claim 1, wherein the exhaust passage (42) comprises a small diameter section (421) and a large diameter section (422) which are sequentially connected from bottom to top, a step surface is formed between the small diameter section (421) and the large diameter section (422), and the plug (432) abuts against the step surface and seals the exhaust passage (42).

3. The cooking appliance according to claim 2, wherein the first rod (433) and the plug (432) are located in the large diameter section (422), the second rod (434) is threaded in the small diameter section (421), and a gap is formed between the second rod (434) and the small diameter section (421) and forms a steam inlet (50).

4. A cooking appliance according to claim 3, wherein the second rod body (434) is sleeved with a first annular sealing ring (45), the first annular sealing ring (45) is located in the large-diameter section (422), and the first annular sealing ring (45) is clamped between the plug (432) and the step surface under the action of the resetting piece (44) so that the steam inlet (50) is sealed.

5. The cooking appliance according to claim 1, wherein a containing recess (411) is provided above the valve body (41), the opening stop valve (40) further comprises a valve cap (47), the valve cap (47) is fixedly arranged in the containing recess (411), wherein the valve cap (47) is provided with a first through hole (471), the first rod body (433) extends upwards and penetrates into the first through hole (471), and a gap is formed between the first rod body (433) and the first through hole (471) and a steam outlet (60) is formed.

6. The cooking appliance according to claim 5, wherein a receiving space (472) communicating with the first through hole (471) is provided in the bonnet (47), and the locking member (46) is provided in the receiving space (472).

7. The cooking appliance according to claim 5, wherein a top end of a side wall of the accommodation recess (411) is shrunk inward and fixes the bonnet (47) in the accommodation recess (411).

8. Cooking appliance according to claim 1, characterized in that the pot cover (20) comprises a pot cover body (21) and an inner pot cover (22) detachably arranged on the pot cover body (21), the non-opening valve (40) is arranged on the inner pot cover (22), wherein the non-opening valve (40) further comprises a valve seat (48) arranged on the inner pot cover (22), a second through hole (481) is arranged on the valve seat (48), and the valve body (41) is movably arranged in the second through hole (481).

9. Cooking appliance according to claim 8, characterized in that the lower end of the valve body (41) is provided with a second annular sealing ring (49), the upper end of the valve body (41) is provided with a positioning step surface (412), and the valve body (41) is positioned on the valve seat (48) by means of the second annular sealing ring (49) and the positioning step surface (412).

10. Cooking appliance according to claim 1, characterized in that a first vent hole (413) and a second vent hole (414) are provided in the side wall of the valve body (41), both the first vent hole (413) and the second vent hole (414) being in communication with the exhaust channel (42).

11. The cooking apparatus according to claim 8, wherein a lock cover (212) rotatably fixed to the lid main body (21) is provided on the lid main body (21), the lock cover (212) is provided with a cover tooth, the lid body (10) is provided with a pan tooth (11), the lock cover (212) is rotated so that the cover tooth of the lock cover (212) is engaged with the pan tooth (11) of the pan body (10), thereby locking the lid (20) with the pan body (10), and the lid opening structure (30) includes:

a handle (31) rotatably provided on the upper side of the lid main body (21);

the rotating rod (32) is arranged on the pot cover main body (21), the rotating rod (32) is connected with the lock cover (212), the rotating rod (32) and the handle (31) are coaxially arranged so that when the handle (31) is rotated, the handle (31) can drive the rotating rod (32) to synchronously rotate, and then the rotating rod (32) drives the lock cover (212) to rotate, and the rotating rod (32) has the locking position and the unlocking position;

wherein, be provided with spout (211) on pot cover main part (21), uncap structure (30) still include with slider (33) that bull stick (32) are connected, when bull stick (32) rotate, slider (33) are in slip in spout (211), when the internal pressure of pot body (10) risees, open stop valve (40) by jack-up and make open stop valve (40) imbed to in spout (211), and then make bull stick (32) are fixed lock position.