A pressure cooking system

Abstract

The embodiment of the present application provides a pressure cooking system, and belongs to the technical field of food cooking. The pressure cooking system comprises a pressure-bearing cover, a cooking container and a locking device. The edge of the pressure-bearing cover is provided with a first locking part, and the shape surrounded by the first profile line of the first locking part is a polygon. The cooking cavity and the second locking part surrounding the cooking cavity are formed, and the shape surrounded by the second profile line of the second locking part is matched with the shape surrounded by the first profile line. The locking device is correspondingly arranged at the position where each two adjacent edge lines of the first profile line are close to each other, and the first locking part and the second locking part are locked in the locking state of the locking device. Each locking device is arranged across the corresponding two adjacent edge lines in the first profile line and the corresponding two adjacent edge lines in the second profile line, and the first locking part and the second locking part can be separated from each other when all the locking devices are in the unlocking state. The cooking system of the embodiment of the present application can improve the pressure-bearing capacity of the pressure cooking system.

Description

Technical Field

[0001] This application relates to the field of food cooking technology, and more particularly to a pressure cooking system. Background Technology

[0002] In daily life, some foods require cooking under certain pressure conditions to enhance their flavor. However, in related technologies, the locking device of a pressure cooking system may be damaged under the pressure within the cooking chamber, indicating that the pressure-bearing capacity of the pressure cooking system is relatively poor. Summary of the Invention

[0003] In view of this, embodiments of this application aim to provide a pressure cooking system to improve the pressure resistance of the pressure cooking system.

[0004] To achieve the above objectives, a first aspect of this application provides a pressure cooking system, including...

[0005] The pressure cover has a first locking part formed on its edge. The outer contour line of the projection area of ​​the first locking part in the vertical direction is a first contour line. The shape enclosed by the first contour line is a polygon.

[0006] A cooking container having a cooking cavity and a second locking portion, the second locking portion surrounding the cooking cavity, the outer contour line of the projection area of ​​the second locking portion in the vertical direction being a second contour line, the shape formed by the second contour line being adapted to the shape formed by the first contour line; and

[0007] A locking device is provided at the position where each pair of adjacent side lines in the first contour line is close to each other. The locking device has a locked state and an unlocked state. The locking device can move to switch between the locked state and the unlocked state. In the locked state, the locking device locks the first locking part and the second locking part together. Each locking device spans two adjacent side lines in the first contour line and two adjacent side lines in the second contour line. When all the locking devices are in the unlocked state, the first locking part and the second locking part can be separated from each other.

[0008] In one embodiment, the pressure cooking system further includes a first limiting member disposed on the pressure-bearing cover, and the locking device includes:

[0009] The latch, when the locking device is in the locked state, locks the first locking part and the second locking part together, each latch spanning two adjacent side lines of the first contour line and two adjacent side lines of the second contour line; when the locking device is in the unlocked state, the latch releases the locking of the first locking part and the second locking part.

[0010] A guide member is connected to the latch, and the guide member has a first guide groove. The first limiting member passes through the first guide groove to limit the movement direction of the guide member.

[0011] In one embodiment, the number of the first limiting members is at least two, the at least two first limiting members are arranged along the extension direction of the first guide groove, each first limiting member is provided with a first guide groove, and a plurality of first guide grooves are arranged along the extension direction of the first guide groove.

[0012] In one embodiment, the guide includes:

[0013] Support member, connected to the latch; and

[0014] A guide body is connected to the support member, the guide body is located on the side of the support member facing the pressure cover, and the first guide groove is formed in the guide body. The support member surrounds the guide body.

[0015] In one embodiment, the latch includes:

[0016] The upper buckle portion, when the buckle locks the first locking portion and the second locking portion, the upper buckle portion is locked above the first locking portion, and the projection area of ​​the upper buckle portion and the projection area of ​​the first locking portion overlaps in the vertical direction, which is the first target area. At the position on the first contour line corresponding to the upper buckle portion, the direction perpendicular to the first contour line is the target direction. The target direction is located in the projection plane. The size of the first target area along the target direction is the first size. The first size is greater than or equal to 8 mm and less than or equal to 12 mm.

[0017] The lower buckle portion, when the latch locks the first locking portion and the second locking portion, the lower buckle portion is locked below the second locking portion. Projected along the vertical direction, the overlapping area of ​​the projection area of ​​the lower buckle portion and the projection area of ​​the second locking portion is the second target area. The dimension of the second target area along the target direction is the second dimension, which is greater than or equal to 4mm and less than or equal to 8mm; and

[0018] The connecting part is connected to the upper buckle part and the lower buckle part respectively.

[0019] In one embodiment, the latch includes:

[0020] The upper buckle portion, when the buckle locks the first locking portion and the second locking portion, the upper buckle portion is locked above the first locking portion, and projected along the vertical direction, at the position corresponding to the upper buckle portion on the first contour line, the direction perpendicular to the first contour line is the target direction, the target direction is located in the projection plane, and the size of the projection area of ​​the upper buckle portion along the target direction is the third size;

[0021] The lower buckle portion, when the latch locks the first locking portion and the second locking portion, is locked below the second locking portion. Projected along the vertical direction, the projection area of ​​the lower buckle portion has a fourth dimension along the target direction, and the third dimension is larger than the fourth dimension; and

[0022] The connecting part is connected to the upper buckle part and the lower buckle part respectively.

[0023] In one embodiment, the pressure cooking system further includes a drive plate rotatably connected to the pressure cover to rotate about a rotation axis. Each of the locking devices is mounted on the drive plate. When the drive plate rotates, it drives all the locking devices to move so that all the locking devices switch between the locked state and the unlocked state.

[0024] In one embodiment, the pressure cooking system further includes a transmission component, each of the locking devices is provided with the transmission component, the drive disc forms a state switching groove, the transmission component passes through the state switching groove, the drive disc rotates to move the transmission component within the state switching groove, the transmission component drives the corresponding locking device to move, the state switching groove has a distal end and a proximal end, the distance between the distal end and the rotation axis is greater than the distance between the proximal end and the rotation axis, and the distance between the state switching groove and the rotation axis gradually increases from the proximal end to the distal end.

[0025] In one embodiment, each of the transmission components is provided with a state switching groove at a position corresponding to the drive disk, and the proximal end and the distal end are alternately arranged along the circumference of the drive disk.

[0026] In one embodiment, the drive plate is formed with a second guide groove that is offset from the rotation axis. The pressure cooking system includes a second limiting member disposed on the pressure cover. The second limiting member passes through the second guide groove to limit the rotation angle of the drive plate and alleviate the shaking of the drive plate. There are two second guide grooves, which are symmetrically arranged. Each second guide groove is provided with a second limiting member.

[0027] In one embodiment, the drive disc has an anti-rotation port offset from the rotation axis. The pressure cooking system also includes a float valve. When the pressure in the cooking chamber is less than a preset pressure, the float valve is located below the anti-rotation port and opens to allow the cooking chamber to release gas. When the locking device is in the locked state and the pressure in the cooking chamber is greater than or equal to the preset pressure, the float valve rises to close the cooking chamber to prevent gas from escaping. The float valve passes through the anti-rotation port to prevent the drive disc from rotating. When the locking device is in the unlocked state, the float valve is offset from the anti-rotation port so that the drive disc prevents the float valve from rising.

[0028] In one embodiment, the first contour line includes a first rounded corner connecting two adjacent side lines of the first contour line, and a straight line coinciding with the midpoint of the first rounded corner and the center of the first rounded corner is a reference straight line, and the moving direction of the locking device is parallel to the corresponding reference straight line.

[0029] In one embodiment, the pressure cap has an annular protrusion and a recess located within the annular protrusion, and the first locking portion surrounds the outside of the annular protrusion.

[0030] In one embodiment, the cooking container includes:

[0031] Outer pot; and

[0032] An inner pot is installed inside the outer pot, and the cooking cavity is formed in the inner pot;

[0033] The second locking part is formed on the outer pot or the inner pot. When the second locking part is formed on the outer pot, the inner pot can move up and down.

[0034] In one embodiment, the shape enclosed by the first contour line is square, the longer side of the first contour line is called the long side line, the shorter side of the first contour line is called the short side line, and when projected in the vertical direction, the dimension by which the long side line overlaps with the projection area of ​​the locking device is the fifth dimension, and the dimension by which the short side line overlaps with the projection area of ​​the locking device is the sixth dimension, wherein the fifth dimension is larger than the sixth dimension.

[0035] In the pressure cooking system of this application embodiment, when the locking device locks the first locking part and the second locking part, since each locking device spans two adjacent side lines in the first contour line and two adjacent side lines in the second contour line, the locking device locks the first locking part and the second locking part at the position corresponding to one side line and at the position corresponding to the other side line. The locking device is no longer locked at a single side line position. Locking the first locking part and the second locking part at the position corresponding to either of the two adjacent side lines can, to a certain extent, prevent the first locking part of the pressure-bearing cover from disengaging from the locking device at the position corresponding to the other side line, reducing the possibility of the locking device being damaged and improving the pressure-bearing capacity of the pressure cooking system. When subjected to approximately the same pressure, the locking device of this application can be made less thick than the locking devices in related technologies, which is beneficial for lightweighting the locking device and reducing manufacturing costs. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the pressure cooking system according to an embodiment of this application;

[0037] Figure 2 This is an exploded view of the pressure cooking system according to an embodiment of this application;

[0038] Figure 3 This is a structural schematic diagram of the pressure cooking system according to an embodiment of this application from another perspective;

[0039] Figure 4 for Figure 3 Rotated sectional view at position AA in the middle;

[0040] Figure 5 for Figure 4 An enlarged view at position C in the middle, showing the first and second dimensions;

[0041] Figure 6 for Figure 4 An enlarged view at position C in the middle, showing the third and fourth dimensions;

[0042] Figure 7 This is an assembly drawing of the drive disk, the second limiting member, and the transmission member according to an embodiment of this application;

[0043] Figure 8 This is a schematic diagram of the pressure-bearing cover according to an embodiment of this application;

[0044] Figure 9 for Figure 8 A schematic diagram of the pressure cover from another perspective;

[0045] Figure 10 for Figure 3 A magnified view at position B in the middle;

[0046] Figure 11 for Figure 9 Sectional view at position DD in the middle;

[0047] Figure 12 This is an assembly drawing of the locking device and transmission component according to an embodiment of this application;

[0048] Figure 13 for Figure 12 A schematic diagram of the structure shown from another perspective;

[0049] Figure 14 for Figure 13 Sectional view at position EE in the middle.

[0050] Explanation of reference numerals in the attached drawings: Pressure cap 1; First locking part 11; First outline 111; First rounded corner 1111; Long side line 1112; Short side line 1113; Annular protrusion 12; Recess 13; Rotating shaft 14; Cooking container 2; Cooking cavity 21; Second locking part 22; Second outline 221; Inner liner 23; Locking device 3; Lock 31; Upper latch 311; Lower latch 312; Connecting part 313; Guide 32; First guide groove 321 Support component 322; Guide body 323; First limiting component 4; Drive disk 5; State switching groove 51; Far end 511; Proximal end 512; Second guide groove 52; Anti-rotation port 53; Transmission component 6; Second limiting component 7; Float valve 8; Sealing ring 9; First dimension D1; Second dimension D2; Third dimension D3; Fourth dimension D4; Fifth dimension D5; Sixth dimension D6; Rotation axis CL; Reference line RL; Seventh dimension D7; Eighth dimension D8. Detailed Implementation

[0051] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific implementation should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0052] In the description of the embodiments in this application, "upper," "lower," "top," "bottom," orientation, or positional relationship are based on the appendix. Figure 4 The orientations or positional relationships shown are for illustrative purposes only and do not imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Figure 4 For reference, the direction indicated by arrow R1 in the diagram is up and down.

[0053] As part of the inventive concept of this application, before describing the embodiments of this application, it is necessary to analyze the reasons for the poor pressure-bearing capacity of pressure cooking systems in related technologies, and obtain the technical solution of the embodiments of this application through reasonable analysis.

[0054] In related technologies, pressure cooking systems typically include a pressure-bearing lid, a cooking container, and a locking device. The locking device is used to lock the pressure-bearing lid to the cooking container. In some applications, the projected areas of the pressure-bearing lid and the cooking container are not circular but polygonal. Each locking device locks on a single edge of the polygon, making it easier for the pressure-bearing lid to come out of the locking device and damage it. As a result, the pressure-bearing capacity of the pressure cooking system is poor.

[0055] Therefore, this application provides a pressure cooking system. Please refer to [link / reference]. Figures 1-6 , Figure 9 as well as Figure 10 The pressure cooking system includes a pressure cover 1, a cooking container 2, and a locking device 3. The locking device 3 is used to lock or unlock the pressure cover 1 and the cooking container 2. The cooking container 2 has a cooking chamber 21. When food in the cooking chamber 21 needs to be cooked, the locking device 3 locks the pressure cover 1 and the cooking container 2 together, gradually increasing the pressure within the cooking chamber 21 and acting on the pressure cover 1, the cooking container 2, and the locking device 3. After cooking is complete, the locking device 3 can unlock the pressure cover 1 and the cooking container 2, separating them so that the cooked food can be removed and consumed.

[0056] In one embodiment, the pressure cooking system can be an electric pressure cooker.

[0057] It is understandable that, as cooking needs evolve, the projected areas of the pressure-bearing cover 1 and the cooking container 2 in the vertical direction are not limited to circles. In one embodiment, please refer to... Figure 5 and Figure 6 ,as well as Figures 8-10The edge of the pressure-bearing cover 1 has a first locking portion 11. The outer contour line of the projection area of ​​the first locking portion 11 in the vertical direction is the first contour line 111, and the shape enclosed by the first contour line 111 is polygonal. The cooking container 2 has a cooking cavity 21 and a second locking portion 22. The second locking portion 22 surrounds the cooking cavity 21. The outer contour line of the projection area of ​​the second locking portion 22 in the vertical direction is the second contour line 221, and the shape enclosed by the second contour line 221 is adapted to the shape enclosed by the first contour line 111. With this structural form, the locked part of the pressure cover 1 and the locked part of the cooking container 2 are no longer the common circles. The shape enclosed by the first outline 111 is polygonal. Since the shape enclosed by the second outline 221 is adapted to the shape enclosed by the first outline 111, the shape enclosed by the second outline 221 is also roughly polygonal. The shape enclosed by the first outline 111 of the pressure cover 1 is polygonal, and the shape enclosed by the second outline 221 of the cooking container 2 is polygonal, so that the pressure cooking system can adapt to more specific cooking scenarios.

[0058] It should be explained that the shape enclosed by the first outline 111 is square, and the shape enclosed by the second outline 221 is square. The edges of the square can be straight but are not limited to straight lines. The edges of the square can be slightly curved into arcs. As long as the shape enclosed by the first outline 111 is roughly square, it should be understood as falling within the scope of the square in this application. As long as the shape enclosed by the second outline 221 is roughly square, it should be understood as falling within the scope of the square in this application.

[0059] It should be noted that the square in this application embodiment is mainly a shape enclosed by four sides. For example, a square can be a shape formed by connecting four sides in sequence; a square can be a shape formed by transitioning the four sides through chamfers, where the chamfers can be rounded corners or beveled edges; the four sides of a square can be straight lines; or the four sides of a square can be arcs, where the arc height is less than or equal to 10mm. The straight line connecting the two endpoints of the arc is a chord, and the arc height refers to the farthest distance between a point on the arc and the corresponding chord.

[0060] In one embodiment, please refer to Figure 9 The shape enclosed by the first contour line 111 is quadrilateral. With this structural form, since the shape enclosed by the second contour line 221 matches the shape enclosed by the first contour line 111, and both the shape enclosed by the second contour line 221 and the shape enclosed by the first contour line 111 are quadrilateral, it is beneficial to set the projection area of ​​the cooking cavity 21 in the cooking container 2 in the vertical direction as a quadrilateral, so that the cooking cavity 21 in the cooking container 2 can cook quadrilateral food.

[0061] It is understandable that quadrilaterals are a type of polygon.

[0062] In one embodiment, please refer to Figure 9 The shape enclosed by the first contour line 111 is square. With this structural form, since the shape enclosed by the second contour line 221 matches the shape enclosed by the first contour line 111, and both the second contour line 221 and the first contour line 111 are square, it is advantageous to set the vertical projection area of ​​the cooking cavity 21 in the cooking container 2 as square. A cooking cavity 21 with a square projection area can cook square foods, such as square cakes. Square foods are easier to slice and eat compared to other shaped foods.

[0063] It is understandable that a square is a type of quadrilateral.

[0064] In one embodiment, please refer to Figure 9 The shape enclosed by the first outline 111 is rectangular. With this structural form, since the shape enclosed by the second outline 221 matches the shape enclosed by the first outline 111, and both the shape enclosed by the second outline 221 and the shape enclosed by the first outline 111 are rectangular, it is beneficial to set the projection area of ​​the cooking cavity 21 in the cooking container 2 in the vertical direction as a rectangle. The rectangular projection area of ​​the cooking cavity 21 is convenient for cooking long foods such as whole ribs or whole fish.

[0065] In one embodiment, please refer to Figure 9 The projection area of ​​the pressure cover 1 along the vertical direction is square, and the projection area of ​​the cooking container 2 along the vertical direction is square.

[0066] In one embodiment, please refer to Figure 9The shape enclosed by the first contour line 111 is polygonal. In the first contour line 111, a locking device 3 is provided at the position where each pair of adjacent side lines are close to each other. The locking device 3 has a locked state and an unlocked state. The locking device 3 can move to switch between the locked state and the unlocked state. In the locked state, the locking device 3 locks the first locking part 11 and the second locking part 22. Each locking device 3 spans the corresponding two adjacent side lines in the first contour line 111 and the corresponding two adjacent side lines in the second contour line 221. When all locking devices 3 are in the unlocked state, the first locking part 11 and the second locking part 22 can be separated from each other. With this structural configuration, when the locking device 3 locks the first locking part 11 and the second locking part 22, since each locking device 3 spans two adjacent side lines of the first contour line 111 and two adjacent side lines of the second contour line 221, the locking device 3 locks the first locking part 11 and the second locking part 22 at the position corresponding to one side line of the two adjacent side lines of the first contour line 111, and locks the first locking part 11 and the second locking part 22 at the position corresponding to the other side line. The locking device 3 is no longer locked at a single position corresponding to a single side line. The locking device 3 locking the first locking part 11 and the second locking part 22 at the position corresponding to either of the two adjacent side lines can, to a certain extent, prevent the first locking part 11 of the pressure cover 1 from disengaging from the locking device 3 at the position corresponding to the other side line, reducing the possibility of the locking device 3 being damaged and improving the pressure-bearing capacity of the pressure cooking system. When subjected to roughly the same pressure, the locking device 3 of this application can be made less thick than the locking device 3 in the related art, which is beneficial to the lightweighting of the locking device 3 and the reduction of manufacturing costs.

[0067] In one embodiment, please refer to Figures 1-3 A locking device 3 is provided at each of the two adjacent edge lines where they are close to each other. This structure makes the force on the locking device 3 and the pressure cover 1 more even, reduces the possibility that the first locking part 11 of the pressure cover 1 will come out of the locking device 3, and helps to improve the pressure resistance of the pressure cooking system.

[0068] In one embodiment, please refer to Figure 9 The first outline 111 forms a square shape. A locking device 3 is set at the position where each pair of adjacent side lines are close to each other. That is, a locking device 3 is set at the corresponding position of the four corners of the square, for a total of four locking devices 3.

[0069] It is understood that the locking device 3 is not limited to being set at the positions where each pair of adjacent edges is close to each other. It can also be set at the positions where each pair of adjacent edges of a polygon is close to each other, while no locking device 3 is set at the positions where each pair of adjacent edges is close to each other. In one embodiment, the shape enclosed by the first contour line 111 is hexagonal. Locking devices 3 are set at three pairs of adjacent edges of the hexagon, for a total of three locking devices 3. The three locking devices 3 are set at 120° intervals, that is, locking devices 3 are set at three corners of the hexagon, and no locking devices 3 are set at the other three corners.

[0070] In one embodiment, please refer to Figure 9 The shape formed by the first outline 111 is rectangular. The longer side of the first outline 111 is called the long side 1112, and the shorter side is called the short side 1113. Projected vertically, the dimension of overlap between the long side 1112 and the projection area of ​​the locking device 3 is the fifth dimension D5, and the dimension of overlap between the short side 1113 and the projection area of ​​the locking device 3 is the sixth dimension D6. The fifth dimension D5 is larger than the sixth dimension D6. With this structure, the length of the first locking part 11 and the second locking part 22 locked by the locking device 3 in the extension direction of the long side 1112 is relatively long. This helps to suppress the upward arching of the pressure-bearing cover 1 at the corresponding position of the long side 1112, thereby improving the pressure-bearing capacity of the pressure cooking system.

[0071] In one embodiment, please refer to Figure 9 The first contour line 111 includes a first rounded corner 1111 connecting two adjacent edges of the first contour line 111. With this structure, the two adjacent edges of the first contour line 111 transition relatively smoothly through the first rounded corner 1111, making the pressure cover 1 generally smooth. This avoids the pressure cover 1 forming sharp corners at the locations where the two adjacent edges of the first contour line 111 are close to each other, which could easily injure operators. It also avoids stress concentration caused by sharp corners.

[0072] It should be noted that the first rounded corner 1111 is connected between two adjacent edge lines of the first contour line 111, and the first rounded corner 1111 is tangent to two adjacent edge lines of the first contour line 111.

[0073] It is understandable that, since the shape enclosed by the second contour line 221 is adapted to the shape enclosed by the first contour line 111, when the first contour line 111 includes a first rounded corner 1111 connecting two adjacent side lines of the first contour line 111, the second contour line 221 includes a second rounded corner connecting two adjacent side lines of the second contour line 221.

[0074] In one embodiment, the first contour line 111 includes a first chamfer connecting two adjacent edges of the first contour line 111, and the two adjacent edges of the first contour line 111 can transition between each other through the first chamfer. The second contour line 221 includes a second chamfer connecting two adjacent lines of the second contour line 221, and the two adjacent edges of the second contour line 221 can transition between each other through the second chamfer.

[0075] In one embodiment, please refer to Figures 4-6 The pressure cooking system also includes a sealing ring 9 disposed between the pressure cover 1 and the cooking container 2, and the pressure cover 1 and the cooking container 2 are sealed by the sealing ring 9.

[0076] It is understandable that, since the fifth dimension D5 is larger than the sixth dimension D6, the length of the first locking part 11 and the second locking part 22 locked by the locking device 3 in the extension direction of the long side line 1112 is longer. This helps to suppress the degree of upward arching of the pressure cover 1 at the corresponding position of the long side line 1112, and prevents the sealing ring 9 from being squeezed out from the upward arching position of the pressure cover 1, thus causing unnecessary pressure relief.

[0077] In one embodiment, please refer to Figure 1 and Figure 2 ,as well as Figures 4-6 The cooking container 2 includes an outer pot and an inner pot 23. The inner pot 23 is installed inside the outer pot, and the cooking cavity 21 is formed in the inner pot 23. A second locking part 22 is formed on either the outer pot or the inner pot 23. When the second locking part 22 is formed on the outer pot, the inner pot 23 can move up and down. This structural configuration allows the pressure cooking system to achieve different pressure-bearing methods depending on the position of the second locking part 22.

[0078] Specifically, when the second locking part 22 is formed on the inner pot 23, the locking device 3 locks the pressure-bearing cover 1 to the inner pot 23, and the inner pot 23 and the pressure-bearing cover 1 form a rigid pressure-bearing structure. When the second locking part 22 is formed on the outer pot, the locking device 3 locks the pressure-bearing cover 1 to the outer pot, and the inner pot 23 is not locked to the pressure-bearing cover 1 and is not constrained by the pressure-bearing cover 1. An elastic pressure detection switch can be set below the inner pot 23 to control the pressure in the cooking cavity 21. The inner pot 23 can move downward under the pressure of the cooking cavity 21 or move upward under the action of elasticity, so as to achieve elastic pressure bearing between the inner pot 23 and the pressure-bearing cover 1.

[0079] In one embodiment, please refer to Figures 4-6 The pressure cover 1 and the inner liner 23 are sealed by a sealing ring 9.

[0080] In one embodiment, the projection area of ​​the inner liner along the vertical direction is square.

[0081] In one embodiment, the projected area of ​​the outer pot along the vertical direction is square.

[0082] In one embodiment, please refer to Figures 1-3 ,as well as Figure 10 The pressure cooking system also includes a first limiting member 4 disposed on the pressure cover 1.

[0083] In one embodiment, please refer to Figures 4-6 The first limiting member 4 can be detachably connected to the pressure cover 1. Exemplarily, the first limiting member 4 can be threadedly connected to the pressure cover 1.

[0084] In one embodiment, the first limiting member 4 can be non-detachably connected to the pressure cover 1. Exemplarily, the first limiting member 4 can be welded or riveted to the pressure cover 1.

[0085] In one embodiment, the first limiting member 4 can be integrally formed with the pressure-bearing cover 1.

[0086] In one embodiment, please refer to Figures 4-6 , Figure 10 ,as well as Figures 12-14The locking device 3 includes a latch 31 and a guide member 32. When the locking device 3 is in the locked state, the latch 31 locks the first locking part 11 and the second locking part 22. Each latch 31 spans two adjacent connecting lines in the first contour line 111 and two adjacent edge lines in the second contour line 221. When the locking device 3 is in the unlocked state, the latch 31 releases the locking of the first locking part 11 and the second locking part 22. The guide member 32 is connected to the latch 31 and has a first guide groove 321. A first limiting member 4 passes through the first guide groove 321 to limit the movement direction of the guide member 32. With this structure, the first locking part 11 and the second locking part 22 are locked or unlocked by the latch 31. When the latch 31 locks the first locking part 11 and the second locking part 22, since each latch 31 spans two adjacent side lines in the first contour line 111 and two adjacent side lines in the second contour line 221, the latch 31 locks the first locking part 11 and the second locking part 22 at the position corresponding to one side line and locks the first locking part 11 and the second locking part 22 at the position corresponding to the other side line. The latch 31 is no longer locked at the position corresponding to a single side line. In the first contour line 111, the latch 31 locks the first locking part 11 and the second locking part 22 at the position corresponding to either side line. This can, to a certain extent, prevent the first locking part 11 of the pressure cover 1 from coming out of the latch 31 at the position corresponding to the other side line, reducing the possibility of the latch 31 being damaged and improving the pressure resistance of the pressure cooking system. The guide member 32 is connected to the latch 31, and the latch 31 moves with the guide member 32. The first limiting member 4 passes through the first guide groove 321 to restrict the movement direction of the guide member 32, thereby guiding the movement direction of the guide member 32 and causing the guide member 32 to drive the latch 31 to move in a preset direction. When the latch 31 is in the unlocked state, it releases the locking of the first locking part 11 and the second locking part 22. When all the latches 31 release the locking of the first locking part 11 and the second locking part 22, the first locking part 11 and the second locking part 22 can separate from each other, making it easy to remove the cooked food from the cooking cavity 21.

[0087] In one embodiment, the first limiting member 4 has a circular cross-sectional shape. For example, the first limiting member 4 is a pin.

[0088] It is understandable that when the cross-sectional shape of the first limiting member 4 is circular, the first limiting member 4 passing through the first guide groove 321 may cause the guide member 32 to rotate around the first limiting member 4. Therefore, in one embodiment, please refer to... Figures 1-3 ,as well as Figure 10The number of first limiting members 4 is at least two, and the at least two first limiting members 4 are arranged along the extension direction of the first guide groove 321. With this structure, by arranging at least two first limiting members 4 along the extension direction of the first guide groove 321, the guide member 32 moves approximately along the direction in which the at least two first limiting members 4 are arranged, thereby guiding the movement direction of the guide member 32 and preventing the guide member 32 from rotating around the first limiting members 4.

[0089] In one embodiment, the number of first limiting members 4 may also be one, and the cross-sectional shape of the first limiting member 4 prevents the guide member 32 from rotating around the first limiting member 4. For example, the cross-sectional shape of the first limiting member 4 is rectangular, and when the first limiting member 4 passes through the first guide groove 321, the rectangular cross-section of the first limiting member 4 can prevent the guide member 32 from rotating around the first limiting member 4.

[0090] It is understandable that the greater the distance between at least two first limiting members 4, the more pronounced the effect of restricting the rotation of the guide member 32, and the better the guiding performance of the guide member 32 in moving along the arrangement direction of at least two first limiting members 4. Therefore, in one embodiment, please refer to... Figures 1-3 ,as well as Figure 10 Each first limiting member 4 is provided with a corresponding first guide groove 321, and multiple first guide grooves 321 are arranged along the extension direction of the first guide groove 321. This structural form not only allows the first guide groove 321 to cooperate with the first limiting member 4 to guide the movement direction of the guide member 32, but also reduces the area occupied by the first guide groove 321, which is beneficial to increasing the strength of the guide member 32 and improving the pressure resistance of the pressure cooking system.

[0091] In one embodiment, the number of first guide grooves 321 may also be one, and all first limiting members 4 are inserted into the first guide grooves 321 and arranged along the extension direction of the first guide grooves 321.

[0092] In one embodiment, please refer to Figures 1-3 , Figure 10 , Figure 12 as well as Figure 13 The first guide groove 321 is a straight groove.

[0093] In one embodiment, the latch 31 and the guide 32 can be welded or integrally formed.

[0094] In one embodiment, please refer to Figures 12-14The guide member 32 includes a support member 322 and a guide body 323. The support member 322 is connected to the latch 31. The guide body 323 is connected to the support member 322 and is located on the side of the support member 322 facing the pressure cover 1. A first guide groove 321 is formed in the guide body 323. This structural form makes the guide body 323 recessed downward relative to the support member 322, which can increase the strength of the guide member 32 and help to suppress the upward arching deformation of the guide member 32 and the pressure cover 1.

[0095] In one embodiment, please refer to Figures 12-14 The support member 322 surrounds the guide body 323.

[0096] With this structural form, the downwardly recessed guide body 323 is supported by the support member 322, which increases the difficulty of the guide body 323 arching upward, and helps to suppress the upward arching deformation of the guide member 32 and the pressure cover 1.

[0097] In one embodiment, the support member 322 and the guide body 323 are integrally formed.

[0098] In one embodiment, please refer to Figures 1-3 ,as well as Figure 10 The latch 31 extends along the first contour line 111.

[0099] Specifically, please refer to Figures 1-3 ,as well as Figure 10 The latches 31 are respectively extended along the two adjacent side lines of the first outline 111.

[0100] In one embodiment, please refer to Figures 1-3 ,as well as Figure 10 When the two adjacent edges of the first contour line 111 transition through the first rounded corner 1111, the latch 31 extends along the two adjacent edges of the first contour line 111 and the first rounded corner 1111 connecting the two adjacent edges.

[0101] In one embodiment, please refer to Figures 4-6 , Figure 12 as well as Figure 14The latch 31 includes an upper latching portion 311, a lower latching portion 312, and a connecting portion 313. The connecting portion 313 is connected to both the upper latching portion 311 and the lower latching portion 312. When the latch 31 locks the first locking portion 11 and the second locking portion 22, the upper latching portion 311 is locked above the first locking portion 11. When the latch 31 locks the first locking portion 11 and the second locking portion 22, the lower latching portion 312 is locked below the second locking portion 22. This structural form connects the upper latching part 311 and the lower latching part 312 via the connecting part 313, preventing the upper latching part 311 and the lower latching part 312 from moving away from each other in the vertical direction. The upper latching part 311 locks above the first locking part 11 to prevent the pressure cover 1 from moving upward under the pressure of the cooking chamber 21, and the lower latching part 312 locks below the second locking part 22 to prevent the cooking opening from moving downward under the pressure of the cooking chamber 21. This achieves the locking of the first locking part 11 and the second locking part 22, preventing the pressure cover 1 and the cooking container 2 from moving away from each other under the pressure of the cooking chamber 21, so that the food in the cooking chamber 21 can be cooked under certain pressure conditions.

[0102] In one embodiment, the upper buckle 311, the lower buckle 312, and the connecting part 313 are integrally formed.

[0103] In one embodiment, please refer to Figure 5 Projecting along the vertical direction, the area where the projection area of ​​the upper buckle 311 overlaps with the projection area of ​​the first locking part 11 is the first target area. At the position corresponding to the upper buckle 311 on the first contour line 111, the direction perpendicular to the first contour line 111 is the target direction. The target direction lies within the projection plane, and the dimension of the first target area along the target direction is the first dimension D1, which is greater than or equal to 8 mm and less than or equal to 12 mm. Projecting along the vertical direction, the area where the projection area of ​​the lower buckle 312 overlaps with the projection area of ​​the second locking part 22 is the second target area. The dimension of the second target area along the target direction is the second dimension D2, which is greater than or equal to 4 mm and less than or equal to 8 mm. With this structural form, the range of the first dimension D1 and the second dimension D2 is more suitable, so that the locking dimensions of the upper buckle 311 and the first locking part 11 along the target direction and the locking dimensions of the lower buckle 312 and the second locking part 22 along the target direction are not too large, and the pressure-bearing cover 1 and the cooking container 2 are locked more securely.

[0104] It should be noted that when projecting along the vertical direction, the projection plane is a plane perpendicular to the vertical direction.

[0105] It should be noted that the target direction is not a completely fixed direction. The target direction will change accordingly depending on the position on the first contour line 111. For example, referring to the figure, the position on the first contour line 111 corresponding to the upper buckle 311 may include the position on the edge of the first contour line 111 and the position at the rounded corner of the first contour line 111. At the position on the edge of the first contour line 111 corresponding to the upper buckle 311, the target direction is perpendicular to the edge of the first contour line. At the position on the rounded corner of the first contour line 111 corresponding to the upper buckle 311, the target direction is the radial direction of the arc of the rounded corner.

[0106] In one embodiment, please refer to Figure 6 Projecting along the vertical direction, at the position corresponding to the upper buckle 311 on the first contour line 111, the direction perpendicular to the first contour line 111 is the target direction, which lies within the projection plane. The dimension of the projection area of ​​the upper buckle 311 along the target direction is the third dimension D3, and the dimension of the projection area of ​​the lower buckle 312 along the target direction is the fourth dimension D4. The third dimension D3 is greater than the fourth dimension D4. With this structural form, the upper buckle 311 has greater strength, which increases the difficulty for the upper buckle 311 to be lifted upward by the first locking part 11 of the pressure cover 1, reducing the possibility of the pressure cover 1 detaching from the buckle 31 and causing damage to the buckle 31, and is beneficial to improving the pressure-bearing capacity of the pressure cooking system. The third dimension D3 is greater than the fourth dimension D4, which can increase the pressure shared by the buckle 31 and the cooking container 2, and appropriately reduce the pressure shared by the pressure cover 1. Therefore, the buckle 31 can be thickened to increase its strength, and the thickness of the pressure cover 1 can be reduced, thereby reducing the weight of the pressure cooking system and reducing production costs.

[0107] In one embodiment, please refer to Figures 1-4 ,as well as Figure 7 The pressure cooking system also includes a drive plate 5, which is rotatably connected to the pressure cover 1 so that the drive plate 5 rotates around the rotation axis CL. Each locking device 3 is installed on the drive plate 5. When the drive plate 5 rotates, it drives all the locking devices 3 to move, switching them between locked and unlocked states. With this structure, by rotating the drive plate 5, all the locking devices 3 move together, enabling the locking devices 3 to lock the first locking part 11 and the second locking part 22, or to unlock the first locking part 11. The operation is simple and convenient, allowing for relatively quick locking or unlocking of the first locking part 11 and the second locking part 22.

[0108] In one embodiment, please refer to Figure 3 , Figure 4 , Figure 7 and Figure 10 ,as well as Figures 12-14 The pressure cooking system also includes a transmission component 6. Each locking device 3 is equipped with a transmission component 6. The drive disc 5 forms a state switching groove 51, through which the transmission component 6 passes. The drive disc 5 rotates to move the transmission component 6 within the state switching groove 51, thereby driving the corresponding locking device 3 to move. The state switching groove 51 has a distal end 511 and a proximal end 512. The distance between the distal end 511 and the rotation axis CL is greater than the distance between the proximal end 512 and the rotation axis CL. The distance between the state switching groove 51 and the rotation axis CL gradually increases from the proximal end 512 to the distal end 511. With this structure, the transmission component 6 passes through the state switching groove 51. Since the distance between the state switching groove 51 and the rotation axis CL gradually increases from the proximal end 512 to the distal end 511, the rotation of the drive disc 5 pushes the transmission component 6 within the state switching groove 51 closer to or further away from the rotation axis CL. The locking device 3 moves under the drive of the transmission component 6, thereby switching the locking device 3 between the locked and unlocked states.

[0109] In one embodiment, please refer to Figure 7 The distance between the distal end 511 and the rotation axis CL is the seventh dimension D7, and the distance between the proximal end 512 and the rotation axis CL is the eighth dimension D7. The seventh dimension D7 is greater than the eighth dimension D7.

[0110] In one embodiment, please refer to Figure 3 and Figure 7 The direction from the proximal end 512 to the distal end 511 is clockwise. When the drive disk 5 rotates counterclockwise, the drive disk 5 drives all locking devices 3 to unlock. When the drive disk 5 rotates clockwise, the drive disk 5 drives all locking devices 3 to lock the first locking part 11 and the second locking part 22.

[0111] In one embodiment, please refer to Figure 3 and Figure 7Each transmission component 6 has a state switching slot 51 at its corresponding position on the drive disk 5, with the near end 512 and the far end 511 alternating along the circumference of the drive disk 5. This structure, with multiple state switching slots 51, reduces the area occupied by all the state switching slots 51 on the drive disk 5, resulting in less material removal from the drive disk 5 and improving its strength, thus suppressing the upward arching deformation of the pressure cover 1. The distance from the near end 512 of each locking device 3's state switching slot 51 to the rotation axis CL, and the distance from the far end 511 to the rotation axis CL, can be set according to actual needs, allowing for flexible installation and arrangement of the locking device 3 on the turntable via the transmission component 6. Since the proximal end 512 and the distal end 511 are arranged alternately along the circumference of the drive disk 5, the drive disk 5 can drive all locking devices 3 away from the rotation axis CL during rotation so that all locking devices 3 are in the unlocked state, the first locking part 11 can be separated from the second locking part 22, or the drive disk 5 can drive all locking devices 3 close to the rotation axis CL during rotation so that all locking devices 3 are in the locked state, and all locking devices 3 lock the first locking part 11 and the second locking part 22.

[0112] In one embodiment, please refer to Figure 7 Each transmission component 6 is provided with a state switching slot 51 at the position corresponding to the drive disk 5. Along the circumference of the drive disk 5, the near end 512 and the far end 511 are arranged alternately. The distance from the near end 512 of all state switching slots 51 to the rotation center line is equal, and the distance from the far end 51 of all state switching slots 51 to the rotation center line is equal.

[0113] In one embodiment, please refer to Figure 7 The state switching slot 51 is a linear slot.

[0114] In one embodiment, please refer to Figure 7 Each transmission component 6 is provided with a state switching slot 51 at the position corresponding to the drive disk 5, and the transmission component 6 passes through the corresponding state switching slot 51. The transmission components 6 in all state switching slots 51 are located at the near end 512 of the corresponding state switching slot 51, or the transmission components 6 in all state switching slots 51 are located at the far end 511 of the corresponding state switching slot 51.

[0115] In one embodiment, please refer to Figure 3 and Figure 10 ,as well as Figures 12-14 The transmission component 6 is connected to the locking device 3, and the transmission component 6 can rotate within the state switching slot 51. Exemplarily, the transmission component 6 is threaded, welded, or integrally formed with the locking device 3.

[0116] In one embodiment, the transmission component 6 is a pin.

[0117] In one embodiment, the cross-section of the portion of the transmission member 6 passing through the state switching slot 51 is configured to prevent the transmission member 6 from rotating within the state switching slot 51, and the transmission member 6 is rotatably connected to the locking device 3. Exemplarily, the cross-section of the portion of the transmission member 6 passing through the state switching slot 51 can be rectangular.

[0118] In one embodiment, please refer to Figure 3 and Figure 10 ,as well as Figures 12-14 The transmission component 6 is located on the guide component 32.

[0119] In one embodiment, please refer to Figure 3 and Figure 10 ,as well as Figures 12-14 The first outline 111 forms a rectangular shape, and the transmission component 6 is located on the side of the guide component 32 facing the long side 1112 of the rectangle. This structural form allows the transmission component 6 to pass through the state switching slot 51, while also reducing the possibility of interference between two adjacent guide sides.

[0120] In one embodiment, the transmission member 6 is connected to the guide member 32, and the transmission member 6 is rotatable within the state switching slot 51. Exemplarily, the transmission member 6 and the guide member 32 are threaded, welded, or integrally formed.

[0121] In one embodiment, the transmission member 6 is rotatably connected to the guide member 32.

[0122] In one embodiment, the number of state switching slots 51 can be one.

[0123] In one embodiment, please refer to Figures 1-3 The pressure cooking system includes a second limiting member 7 disposed on the pressure cover 1.

[0124] In one embodiment, the second limiting member 7 is detachably connected to the pressure-bearing cover 1. Exemplarily, the second limiting member 7 is threadedly connected to the pressure-bearing cover 1.

[0125] In one embodiment, the second limiting member 7 is non-detachably connected to the pressure-bearing cover 1. Exemplarily, the second limiting member 7 is welded or riveted to the pressure-bearing cover 1.

[0126] In one embodiment, the second limiting member 7 can be integrally formed with the pressure-bearing cover 1.

[0127] In one embodiment, please refer to Figures 1-3 ,as well as Figure 7The drive disk 5 has a second guide groove 52 offset from the rotation axis CL, and a second limiting member 7 passes through the second guide groove 52 to alleviate the shaking of the drive disk 5. With this structure, the second limiting member 7 passing through the second guide groove 52 can suppress the drive disk 5 from swinging in a plane perpendicular to the rotation axis CL, so that the drive disk 5 can rotate more smoothly, thereby driving all locking devices 3 to switch more smoothly between the locked and unlocked states.

[0128] In one embodiment, please refer to Figures 1-3 ,as well as Figure 7 The second limiting member 7 passes through the second guide groove 52 to limit the rotation angle of the drive disk 5. This structure, through the cooperation of the second guide groove 52 and the second limiting member 7, limits the rotation angle of the drive disk 5, thereby limiting the movement distance of each locking device 3. This prevents the locking device 3 from unnecessarily moving too far away from the rotation axis CL after unlocking the first locking part 11 and the second locking part 22, or from being excessively pulled towards the rotation axis CL. By limiting the rotation angle of the drive disk 5, the overall movement stroke of all locking devices 3 is limited, resulting in high reliability.

[0129] In one embodiment, please refer to Figures 1-3 ,as well as Figure 7 When the drive disk 5 rotates to its limit position in one of the rotation directions, the second limiting member 7 is located at one end of the second guide groove 52. When the drive disk 5 rotates to its limit position in the opposite rotation direction, the second limiting member 7 is located at the other end of the second guide groove 52. With this structure, the rotation angle of the drive disk 5 is limited by the cooperation between the two ends of the second guide groove 52 and the second limiting member 7.

[0130] In one embodiment, please refer to Figures 1-3 ,as well as Figure 7 The second guide groove 52 is an arc-shaped groove.

[0131] In one embodiment, please refer to Figures 1-3 ,as well as Figure 7 There are two second guide grooves 52, which are arranged symmetrically. Each second guide groove 52 is equipped with a second limiting member 7. This structure can effectively prevent the drive disk 5 from shaking and make the drive disk 5 more stable during rotation.

[0132] In one embodiment, when the two second guide grooves 52 are arranged symmetrically, each second guide groove 52 is provided with a second limiting member 7, and the two second limiting members 7 are centrally symmetrical.

[0133] It should be explained that the central symmetry of the two second limiting members 7 means that one of the second limiting members 7 rotates 180° around the rotation axis CL and coincides with the other second limiting member 7.

[0134] In one embodiment, the second limiting member 7 can be a pin.

[0135] In one embodiment, the upper surface of the drive disk 5 is at the same height as the upper surface of the guide body 323. With this structure, since the first guide groove 321 is formed in the guide body 323 and the second guide groove 52 is formed in the drive disk 5, and the upper surface of the drive disk 5 is at the same height as the upper surface of the guide body 323, the heights of the first limiting member 4, which is disposed on the pressure cover 1 and passes through the first guide groove 321, and the heights of the second limiting member 7, which is disposed on the pressure cover 1 and passes through the second guide groove 52, can be approximately equal. The first limiting member 4 and the second limiting member 7 can use parts of the same specifications, and they are interchangeable, reducing production costs. For example, the first limiting member 4 and the second limiting member 7 can use pins of the same specifications.

[0136] In one embodiment, please refer to Figures 1-3 , Figure 10 ,as well as Figures 12-14 The support 322 is located above the drive disk 5. Because the guide body 323 is located on the side of the support 322 facing the pressure cover 1, the guide body 323 is recessed downward relative to the support 322, so that the upper surface of the drive disk 5 can be at the same height as the upper surface of the guide body 323.

[0137] In one embodiment, please refer to Figure 3 and Figure 7 The drive disc 5 has a non-rotating port 53 offset from the rotation axis CL. The pressure cooking system also includes a float valve 8. When the pressure in the cooking chamber 21 is less than the preset pressure, the float valve 8 is located below the non-rotating port 53 and opens to allow the cooking chamber 21 to release gas. When the locking device 3 is in the locked state and the pressure in the cooking chamber 21 is greater than or equal to the preset pressure, the float valve 8 floats up to close the cooking chamber 21 to prevent the gas in the cooking chamber 21 from escaping. The float valve 8 passes through the non-rotating port 53 to prevent the drive disc 5 from rotating. When the locking device 3 is in the unlocked state, the float valve 8 is offset from the non-rotating port 53 so that the drive disc 5 prevents the float valve 8 from floating up. With this structure, when the locking device 3 is in the unlocked state, the float valve 8 is offset from the non-rotating port 53 so that the drive disc 5 prevents the float valve 8 from floating up, thereby preventing the pressure in the cooking chamber 21 from increasing when the locking device 3 is in the unlocked state, thus improving the installability of the pressure cooking system. When the locking device 3 is in the locked state and the pressure in the cooking chamber 21 is greater than or equal to the preset pressure, the float valve 8 floats up to close the cooking chamber 21 to prevent the gas in the cooking chamber 21 from being released. The float valve 8 is inserted into the anti-rotation port 53 to prevent the drive plate 5 from rotating and to prevent the drive plate 5 from driving the locking device 3 to unlock when the pressure in the cooking chamber 21 is high, thereby improving the safety of the pressure cooking system.

[0138] In one embodiment, the preset pressure can be set according to actual conditions.

[0139] In one embodiment, please refer to Figure 7 The anti-rotation opening 53 is a notch located at the edge of the drive disk 5. This structural form allows the radial dimension of the drive disk 5 to be set smaller, reducing production costs.

[0140] In one embodiment, the outline of the projection area of ​​the anti-rotation port 53 is annular.

[0141] In one embodiment, please refer to Figure 10 and Figure 13 The straight line RL, which coincides with the midpoint of the first rounded corner 1111 and the center of the first rounded corner 1111, is used as the reference line RL. The moving direction of the locking device 3 is parallel to the corresponding reference line RL. This structure allows the two adjacent edges of the first contour line 111 of the locking device 3 to move at equal distances, resulting in a shorter travel distance for the locking device 3 to unlock the first locking part 11 and the second locking part 22.

[0142] In one embodiment, please refer to Figures 8-11 The pressure-bearing cover 1 has an annular protrusion 12 and a recess 13 located within the annular protrusion 12. The first locking part 11 surrounds the outside of the annular protrusion 12. With this structure, the annular protrusion 12 acts as a load-bearing frame on the pressure-bearing cover 1, capable of bearing most of the deformation pressure of the pressure-bearing cover 1. Even with a similar thickness to or reduced thickness of the pressure-bearing cover 1, the pressure-bearing capacity of the pressure-bearing cover 1 can be improved, thereby enhancing the pressure-bearing capacity of the pressure cooking system. The first locking part 11 surrounding the outside of the annular protrusion 12 facilitates the locking device 3 in locking the first locking part 11.

[0143] In one embodiment, please refer to Figure 4 , Figures 8-11 The pressure cover 1 has a rotating shaft 14, and the drive disk 5 is sleeved on the rotating shaft 14 so that the drive disk 5 is rotatably connected to the rotating shaft 14.

[0144] The various embodiments / implementations provided in this application can be combined with each other without creating contradictions.

[0145] The above are merely preferred embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A pressure cooking system, characterized in that, include: The pressure cover (1) has a first locking part (11) formed on its edge. The outer contour line of the projection area of ​​the first locking part (11) along the vertical direction is the first contour line (111). The shape enclosed by the first contour line (111) is polygonal. A cooking container (2) having a cooking cavity (21) and a second locking portion (22) surrounding the cooking cavity (21), the outer contour line of the projection area of ​​the second locking portion (22) in the vertical direction being a second contour line (221), the shape formed by the second contour line (221) being adapted to the shape formed by the first contour line (111); and The locking device (3) is provided at the position where each of the two adjacent side lines is close to each other in the first contour line (111). The locking device (3) has a locked state and an unlocked state. The locking device (3) can move to switch between the locked state and the unlocked state. In the locked state, the locking device (3) locks the first locking part (11) and the second locking part (22). Each locking device (3) spans the two adjacent side lines in the first contour line (111) and the two adjacent side lines in the second contour line (221). When all the locking devices (3) are in the unlocked state, the first locking part (11) and the second locking part (22) can be separated from each other.

2. The pressure cooking system according to claim 1, characterized in that, The pressure cooking system further includes a first limiting member (4) disposed on the pressure cover (1), and the locking device (3) includes: The latch (31) locks the first locking part (11) and the second locking part (22) when the locking device (3) is in the locked state. Each latch (31) spans two adjacent side lines of the first contour line (111) and two adjacent side lines of the second contour line (221). When the locking device (3) is in the unlocked state, the latch (31) releases the locking of the first locking part (11) and the second locking part (22). The guide member (32) is connected to the latch (31). The guide member (32) has a first guide groove (321). The first limiting member (4) passes through the first guide groove (321) to limit the movement direction of the guide member (32).

3. The pressure cooking system according to claim 2, characterized in that, The number of the first limiting member (4) is at least two, and the at least two first limiting members (4) are arranged along the extension direction of the first guide groove (321). Each first limiting member (4) is provided with a first guide groove (321), and multiple first guide grooves (321) are arranged along the extension direction of the first guide groove (321).

4. The pressure cooking system according to claim 2, characterized in that, The guide (32) includes: Support member (322), connected to the latch (31); and A guide body (323) is connected to the support member (322). The guide body (323) is located on the side of the support member (322) facing the pressure cover (1). The first guide groove (321) is formed in the guide body (323). The support member (322) surrounds the guide body (323).

5. The pressure cooking system according to claim 2, characterized in that, The latch (31) includes: The upper buckle (311) locks the first locking part (11) and the second locking part (22) together. The upper buckle (311) is locked above the first locking part (11) and projected in the vertical direction. The area where the projection area of ​​the upper buckle (311) and the projection area of ​​the first locking part (11) overlap is the first target area. At the position corresponding to the upper buckle (311) on the first contour line (111), the direction perpendicular to the first contour line (111) is the target direction. The target direction is located in the projection plane. The size of the first target area along the target direction is the first size (D1). The first size (D1) is greater than or equal to 8 mm and less than or equal to 12 mm. The lower buckle (312), when the latch (31) locks the first locking part (11) and the second locking part (22), the lower buckle (312) is locked below the second locking part (22), projected in the vertical direction, the area where the projection area of ​​the lower buckle (312) overlaps with the projection area of ​​the second locking part (22) is the second target area, the size of the second target area along the target direction is the second dimension (D2), the second dimension (D2) is greater than or equal to 4mm, and the second dimension (D2) is less than or equal to 8mm; and The connecting part (313) is connected to the upper buckle part (311) and the lower buckle part (312) respectively.

6. The pressure cooking system according to claim 2, characterized in that, The latch (31) includes: The upper buckle (311) is locked above the first locking part (11) and the second locking part (22) when the buckle (31) locks the first locking part (11) and the second locking part (22). The upper buckle (311) is projected in the vertical direction and is located at the position corresponding to the upper buckle (311) on the first contour line (111). The direction perpendicular to the first contour line (111) is the target direction. The target direction is located in the projection plane. The size of the projection area of ​​the upper buckle (311) along the target direction is the third dimension (D3). The lower buckle (312), when the latch (31) locks the first locking part (11) and the second locking part (22), the lower buckle (312) is locked below the second locking part (22), projected in the vertical direction, the projection area of ​​the lower buckle (312) along the target direction has a fourth dimension (D4), and the third dimension (D3) is larger than the fourth dimension (D4); and The connecting part (313) is connected to the upper buckle part (311) and the lower buckle part (312) respectively.

7. The pressure cooking system according to any one of claims 1 to 6, characterized in that, The pressure cooking system also includes a drive plate (5), which is rotatably connected to the pressure cover (1) so that the drive plate (5) rotates about the rotation axis (CL). Each of the locking devices (3) is installed on the drive plate (5). When the drive plate (5) rotates, the drive plate (5) drives all the locking devices (3) to move so that all the locking devices (3) switch between the locked state and the unlocked state.

8. The pressure cooking system according to claim 7, characterized in that, The pressure cooking system also includes a transmission component (6), and each of the locking devices (3) is provided with the transmission component (6). The drive disc (5) forms a state switching groove (51), and the transmission component (6) passes through the state switching groove (51). The drive disc (5) rotates to move the transmission component (6) within the state switching groove (51). The transmission component (6) drives the corresponding locking device (3) to move. The state switching groove (51) has a distal end (511) and a proximal end (512). The distance between the distal end (511) and the rotation axis (CL) is greater than the distance between the proximal end (512) and the rotation axis (CL). The distance between the state switching groove (51) and the rotation axis (CL) gradually increases from the proximal end (512) to the distal end (511).

9. The pressure cooking system according to claim 8, characterized in that, Each of the transmission components (6) is provided with a state switching groove (51) at the position corresponding to the drive disk (5), and the proximal end (512) and the distal end (511) are arranged alternately along the circumference of the drive disk (5).

10. The pressure cooking system according to claim 7, characterized in that, The drive plate (5) has a second guide groove (52) that is offset from the rotation axis (CL). The pressure cooking system includes a second limiting member (7) disposed on the pressure cover (1). The second limiting member (7) passes through the second guide groove (52) to limit the rotation angle of the drive plate (5) and alleviate the shaking of the drive plate (5). There are two second guide grooves (52), which are symmetrically arranged. Each second guide groove (52) is provided with a second limiting member (7).

11. The pressure cooking system according to claim 7, characterized in that, The drive disc (5) has a non-rotation port (53) offset from the rotation axis (CL). The pressure cooking system also includes a float valve (8). When the pressure in the cooking chamber (21) is less than the preset pressure, the float valve (8) is located below the non-rotation port (53) and the float valve (8) opens to allow the cooking chamber (21) to exhaust gas. When the locking device (3) is in the locked state and the pressure in the cooking chamber (21) is greater than or equal to the preset pressure, the float valve (8) floats up to close the cooking chamber (21) to prevent the gas in the cooking chamber (21) from being discharged. The float valve (8) passes through the non-rotation port (53) to prevent the drive disc (5) from rotating. When the locking device (3) is in the unlocked state, the float valve (8) is offset from the non-rotation port (53) so that the drive disc (5) prevents the float valve (8) from floating up.

12. The pressure cooking system according to any one of claims 1 to 6, characterized in that, The first contour line (111) includes a first rounded corner (1111) connecting two adjacent side lines of the first contour line (111). A straight line that coincides with the midpoint of the first rounded corner (1111) and the center of the first rounded corner (1111) is a reference straight line (RL). The moving direction of the locking device (3) is parallel to the corresponding reference straight line (RL).

13. The pressure cooking system according to any one of claims 1 to 6, characterized in that, The pressure cover (1) has an annular protrusion (12) and a recess (13) located in the annular protrusion (12), and the first locking part (11) surrounds the outside of the annular protrusion (12).

14. The pressure cooking system according to any one of claims 1 to 6, characterized in that, The cooking container (2) includes: Outer pot; and The inner pot (23) is installed inside the outer pot, and the cooking cavity (21) is formed in the inner pot (23); The second locking part (22) is formed on the outer pot or the inner pot (23). When the second locking part (22) is formed on the outer pot, the inner pot (23) can move up and down.

15. The pressure cooking system according to any one of claims 1 to 6, characterized in that, The first outline (111) forms a rectangular shape. The longer side of the first outline (111) is called the long side (1112), and the shorter side is called the short side (1113). When projected in the vertical direction, the dimension by which the long side (1112) overlaps with the projection area of ​​the locking device (3) is the fifth dimension (D5), and the dimension by which the short side (1113) overlaps with the projection area of ​​the locking device (3) is the sixth dimension (D6). The fifth dimension (D5) is larger than the sixth dimension (D6).

Images