Cooking utensil

Abstract

The utility model provides a cooking utensil. The cooking utensil comprises a pot body, a cover body, a pressure relief assembly, a cover opening pressure relief mechanism and a cover opening assembly. The cover body is connected to the cooker body in an openable and closable mode and provided with a pressure relief opening used for communicating the environment with the cooking cavity. The pressure relief assembly is used for opening and closing the pressure relief opening. The uncovering pressure relief mechanism is arranged on the cover body and connected to the pressure relief assembly, and the uncovering pressure relief mechanism has a first state enabling the pressure relief assembly to close the pressure relief opening and a second state enabling the pressure relief assembly to open the pressure relief opening. And under the condition that the cooker body is covered by the cover body, the cover opening assembly is used for acting on the cover opening pressure relief mechanism under the operation of a user, so that the cover opening pressure relief mechanism is in a second state, and the cover body is opened. The uncovering pressure relief mechanism comprises a lever used for being connected to the uncovering assembly and the pressure relief assembly. According to the cooking utensil, the uncovering assembly can control the pressure relief assembly to open the pressure relief opening for pressure relief while uncovering is achieved, the technical problem that an existing cooking utensil with negative pressure is difficult to uncover is solved, and operation is convenient and fast.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of kitchen appliances, more particularly to a cooking utensil. BACKGROUND

[0002] In order to improve the cooking effect of the rice cooker, the existing rice cooker usually improves the rice water absorption speed by negative pressure extraction, and improves the rice preservation effect after cooking, which brings good cooking experience to consumers. In order to realize smooth cover opening, the existing cooking utensil with negative pressure extraction is designed with a negative pressure relief structure, but the structure is generally complex, the cost is high, and the failure rate is high.

[0003] Therefore, it is necessary to provide a cooking utensil to at least partially solve the above problems. SUMMARY

[0004] A series of simplified concepts are introduced in the summary part, which will be further described in detail in the specific embodiment part. The summary part of the utility model does not mean to try to limit the key features and necessary technical features of the claimed technical solution, and does not mean to try to determine the protection scope of the claimed technical solution.

[0005] To at least partially solve the above problems, the utility model provides a cooking utensil, which comprises:

[0006] A pot body having a cooking cavity for containing and heating food materials;

[0007] A cover body connected to the pot body in an openable and closable manner, the cover body having a pressure relief port for communicating between the environment and the cooking cavity;

[0008] A pressure relief assembly arranged in the cover body and used for opening and closing the pressure relief port;

[0009] A cover opening and pressure relief mechanism arranged in the cover body and connected to the pressure relief assembly, the cover opening and pressure relief mechanism having a first state and a second state, the cover opening and pressure relief mechanism in the first state causing the pressure relief assembly to close the pressure relief port, and the cover opening and pressure relief mechanism in the second state causing the pressure relief assembly to open the pressure relief port;

[0010] A cover opening assembly, under the operation of a user, the cover opening assembly is used for acting on the cover opening and pressure relief mechanism to cause the cover opening and pressure relief mechanism to be in the second state and the cover body to be opened when the cover body covers the pot body;

[0011] The cover opening and pressure relief mechanism comprises a lever, and the lever is used for connecting the cover opening assembly and the pressure relief assembly.

[0012] According to the scheme, the cover opening assembly can control the pressure relief assembly to open the pressure relief opening to achieve the purpose of pressure relief while realizing the opening of the cover, thereby solving the technical problem of difficulty in opening the cover of the existing cooking utensil with negative pressure and being convenient to operate.

[0013] Optionally, the cover opening and pressure relief mechanism comprises a cover closing part,

[0014] The cover opening assembly is movable relative to the pot body between an initial position and an action position, and in the case that the cover body covers the pot body, the cover opening assembly is used to move from the initial position to the action position under the operation of the user, so as to be disconnected with the cover closing part, so that the cover body is opened.

[0015] According to the scheme, the cover opening assembly is movable relative to the pot body between an initial position and an action position, and in the case that the cover body covers the pot body, the cover opening assembly is used to move from the initial position to the action position under the operation of the user, so as to be disconnected with the cover closing part, so that the cover body is opened.

[0016] Optionally, in the case that the cover body covers the pot body,

[0017] When the cover opening assembly is located at the action position, the cover opening assembly makes the cover opening and pressure relief mechanism be in the second state, and when the cover opening assembly is located at the initial position, the cover opening assembly is connected with the cover closing part and makes the cover opening and pressure relief mechanism be in the first state.

[0018] According to the scheme, the cover opening assembly is movable relative to the pot body between an initial position and an action position, and in the case that the cover body covers the pot body, the cover opening assembly is used to move from the initial position to the action position under the operation of the user, so as to be disconnected with the cover closing part, so that the cover body is opened.

[0019] Optionally,

[0020] The cover body is pivotably connected to the pot body around a pivot shaft, and the pivot shaft and the cover opening assembly are respectively arranged on opposite sides of the pot body,

[0021] The cooking utensil further comprises a torsional spring, the torsional spring is sleeved on the pivot shaft, and two arms of the torsional spring abut against the cover body and the pot body respectively.

[0022] According to the scheme, the cover body and the pot body are pivotally connected, and the torsional spring is connected to the cover body and the pot body, so that after the user operates the cover opening assembly to move from the initial position to the action position, the cover body can be automatically pivoted to the open position under the action of the torsional spring, and the operation of the cooking utensil is more convenient and labor-saving.

[0023] Optionally, the cover opening and pressure relief mechanism further comprises a transmission assembly, and in the case that the cover body covers the pot body, the transmission assembly is used to connect the cover opening assembly and the pressure relief assembly, and the transmission assembly has the first state and the second state,

[0024] The transmission assembly comprises the lever.

[0025] According to the scheme, the transmission assembly mechanically connects the cover opening assembly and the pressure relief assembly through the lever, without the participation of electric control components, the lever control is simple and stable in performance, the safety and reliability of the cooking utensil are improved, and the production cost is reduced.

[0026] Optionally, the lever comprises a second lever, the second lever is rotatable relative to the cover body, a force point of the second lever is used for connecting the cover opening assembly, and the pressure relief assembly is connected to a resistance point of the second lever to enable at least part of the pressure relief assembly to move synchronously with the second lever.

[0027] According to the scheme, the second lever connects the pressure relief assembly and the cover opening assembly, so as to ensure that the pressure relief assembly moves synchronously with the second lever and the accuracy of the cover opening assembly control is ensured.

[0028] Optionally, the pressure relief assembly comprises:

[0029] a push rod, a first end of the push rod being connected to the second lever to move synchronously with the second lever; and

[0030] a pressure relief sealing element connected to a second end of the push rod and used for opening and closing the pressure relief port.

[0031] According to the scheme, the push rod can move synchronously with the second lever, so as to control the pressure relief sealing element to open and close the pressure relief port.

[0032] Optionally, the cover body is provided with a mounting through hole, the mounting through hole is in the same axial direction as the pressure relief port, the mounting through hole is spaced apart from the pressure relief port along the axial direction, and the pressure relief sealing element is connected to the mounting through hole.

[0033] According to the scheme, the mounting through hole is in the same axial direction as the pressure relief port, so that the position of the pressure relief sealing element relative to the cover body is more accurate, and the closing degree of the pressure relief sealing element to the pressure relief port is ensured.

[0034] Optionally, the pressure relief sealing element comprises a pressure relief sealing element intermediate portion and a pressure relief sealing element peripheral portion connected in sequence from inside to outside in a radial direction, the pressure relief sealing element intermediate portion is movable relative to the pressure relief sealing element peripheral portion,

[0035] wherein the pressure relief sealing element peripheral portion is connected to the port periphery of the mounting through hole, the second end of the push rod is connected to the pressure relief sealing element intermediate portion, and the pressure relief sealing element intermediate portion is used for opening and closing the pressure relief port.

[0036] According to the scheme, the outer peripheral part of the pressure relief seal is connected to the mouth of the mounting through hole, so that the pressure relief seal can be stably mounted on the cover body. The middle part of the pressure relief seal is deformable relative to the outer peripheral part, so that the middle part of the pressure relief seal moves under the action of the push rod to realize the opening and closing of the pressure relief port. The pressure relief assembly has simple structure and stable performance.

[0037] Optionally, the cooking utensil further comprises a pressing ring, and the pressing ring is arranged around the outer peripheral part of the pressure relief seal and the mouth of the mounting through hole.

[0038] According to the scheme, the outer peripheral part of the pressure relief seal is fixed to the mouth of the mounting through hole via the pressing ring, so that the pressure relief seal is firmly mounted and the assembly and maintenance of the pressure relief seal are facilitated.

[0039] Optionally, the pressing ring is located on the side of the mounting through hole away from the pressure relief port.

[0040] According to the scheme, the pressing ring and the pressure relief port are located on the two sides of the mounting through hole, respectively, so that the pressing ring is conveniently installed.

[0041] Optionally, the outer peripheral part of the pressure relief seal and the mouth of the mounting through hole have a positioning structure, the positioning structure comprises a protrusion and a groove for accommodating the protrusion, the protrusion is arranged on one of the outer peripheral part of the pressure relief seal and the mouth of the mounting through hole, and the groove is arranged on the other one of the outer peripheral part of the pressure relief seal and the mouth of the mounting through hole.

[0042] According to the scheme, the positioning structure is easy to process, and effectively improves the installation position accuracy of the pressure relief seal relative to the mounting through hole. The positioning structure also facilitates the installation of the pressing ring.

[0043] Optionally, the pressure relief seal is made of an elastic material, and the middle part of the pressure relief seal comprises a wrinkle structure, the wrinkle structure extends in the radial direction and is concave-convex in the axial direction.

[0044] According to the scheme, since the pressure relief seal is made of an elastic material, the wrinkle structure can ensure that the middle part of the pressure relief seal effectively deforms relative to the outer peripheral part of the pressure relief seal, which can not only improve the opening range of the pressure relief port, but also optimize the airtightness of the pressure relief seal to the pressure relief port.

[0045] Optionally, the pressure relief seal comprises a sealing part arranged on the side of the middle part of the pressure relief seal facing the pressure relief port, the sealing part is configured in the shape of the side surface of a circular truncated cone, and the radial dimension of the side of the sealing part close to the pressure relief port is greater than the radial dimension of the side of the sealing part away from the pressure relief port.

[0046] According to the scheme, the sealing part is trumpet-shaped, the pressure relief opening can be effectively covered in the area range of the sealing part, and it is ensured that the pressure relief opening can be completely closed.

[0047] Optionally, the intermediate part of the pressure relief seal is detachably sleeved outside the second end of the push rod.

[0048] According to the scheme, the pressure relief seal is easily detachable relative to the push rod, facilitating the disassembly, maintenance and replacement of the pressure relief seal.

[0049] Optionally,

[0050] One of the push rod and the intermediate part of the pressure relief seal is provided with a containing groove extending in the circumferential direction, and the groove opening and the groove bottom are opposite in the radial direction,

[0051] The other one of the push rod and the intermediate part of the pressure relief seal is provided with a flange extending in the circumferential direction, and the flange is protruded in the radial direction, and the flange is contained in the containing groove.

[0052] According to the scheme, the push rod and the pressure relief seal are limited by mutual sleeving, avoiding the pressure relief seal from falling off relative to the push rod during use.

[0053] Optionally, the push rod is detachably connected to the second lever.

[0054] According to the scheme, the push rod is easily detachable relative to the second lever, facilitating the disassembly, maintenance and replacement of the push rod, and facilitating the standardization of the internal parts of the cover body.

[0055] Optionally, the lever further comprises a first lever, the first lever is rotatable relative to the cover body, a force point of the first lever is used to connect the cover opening assembly, and a resistance point of the first lever is used to connect a force point of the second lever,

[0056] The resistance point of the first lever is located at the middle or end of the first lever, and the force point of the second lever is located at the middle or end of the second lever.

[0057] According to the scheme, the lever structure is adopted to realize the linkage of the cover opening assembly and the pressure relief assembly, the cover arrangement space is saved, the moving stroke of the pressure relief assembly can be improved, and the precision of opening and closing of the pressure relief opening is optimized. The combination of the two levers can more flexibly adjust the stroke and utilize the cover space.

[0058] Optionally, the axis direction of the pressure relief opening is a vertical direction, the pressure relief assembly is located above the pressure relief opening, and the rotation axes of the first lever and the second lever extend in a horizontal direction.

[0059] According to the scheme, the pressure relief port and the lever are arranged according to the conventional cover structure, thereby reducing the processing difficulty of the cover.

[0060] Optionally, the transmission assembly further comprises a top rod, the top rod being movable up and down relative to the cover, the top rod being located below the first lever, an upper end of the top rod being used for connecting a force point of the first lever, and a lower end of the top rod being used for connecting the cover opening assembly.

[0061] According to the scheme, the cover opening assembly can drive the top rod to move up and down, so that the lever structure drives the pressure relief assembly to move, thereby ensuring the accuracy of the movement of the transmission assembly and making the movement stroke of the pressure relief assembly relative to the cover opening assembly appropriate.

[0062] Optionally, the cover opening assembly comprises:

[0063] an operation member for being operated by a user, the operation member being movably connected to the pot body in a first horizontal direction between the initial position and the action position; and

[0064] a connecting member, the connecting member being pivotably connected to the pot body about an axis extending in a second horizontal direction, the second horizontal direction being perpendicular to the first horizontal direction, one end of the connecting member being connected to the operation member, and the other end of the connecting member being used for connecting the top rod.

[0065] When the cover body covers the pot body, when the operation member is located at the initial position, the connecting member is connected to the cover closing member, and when the operation member is located at the action position, the connecting member is separated from the cover closing member.

[0066] According to the scheme, the connecting member of the cover opening assembly is used for synchronous action with the cover closing member and the transmission assembly, so that the cover opening and pressure relief occur simultaneously, so that the design of the cooking utensil has good human-machine ergonomics, and the convenience of operation is improved.

[0067] Optionally, at least one of the other end of the connecting member and the lower end of the top rod comprises a transmission surface inclined relative to the vertical direction and the first horizontal direction.

[0068] According to the scheme, the transmission of the top rod and the connecting member is smoother, so that the control of the operation member is more labor-saving.

[0069] Optionally, the cover body further has a sliding groove extending in the vertical direction, and the top rod is arranged in the sliding groove; the top rod has a limiting portion, a radial dimension of the limiting portion being greater than an inner diameter of the sliding groove and being located above the sliding groove.

[0070] According to the scheme, the position of the jacking rod relative to the cover body is determined and the jacking rod is easy to move up and down, and in the use state, the jacking rod cannot slip relative to the sliding groove.

[0071] Optionally, the cover body is further provided with a first elastic member connected to the transmission assembly, so that the transmission assembly changes from the second state to the first state.

[0072] According to the scheme, after the user completes the operation of the cover opening assembly, the first elastic member can ensure that the transmission assembly returns to the first state, so that after the cover is closed again, the pressure relief port is closed.

[0073] Optionally, the first elastic member is connected to the first lever or the second lever.

[0074] According to the scheme, the first elastic member can be flexibly arranged at an acting position, and the first elastic member can maintain the initial state of the lever structure, so that after the user completes the operation, the first lever and the second lever can return to the initial position (the first state) under the action of the first elastic member, and ensure that after the cover is closed to the pot body, the pressure relief port is in a closed state, so that negative pressure can be drawn in the cooking cavity to improve the cooking effect. BRIEF DESCRIPTION OF DRAWINGS

[0075] The following drawings of the present application are used herein as a part of the present application to understand the present application. The drawings show the embodiments of the present application and their descriptions, which are used to explain the principles of the present application. In the drawings,

[0076] Figure 1 is a schematic view of the exploded structure of the cooking utensil according to the first embodiment of the present application;

[0077] Figure 2 is a schematic view of the cooking utensil according to the first embodiment of the present application from the top;

[0078] Figure 3 is a schematic view of the cooking utensil according to the first embodiment of the present application from the top; Figure 2

[0079] Figure 4 is an enlarged schematic view of part B in Figure 3

[0080] Figure 5 is a schematic view of the cooking utensil according to the first embodiment of the present application from the top; Figure 2

[0081] Figure 6 is an enlarged schematic view of part C in Figure 5

[0082] ​​​​Figure 7 for Figure 3 Schematic diagram of the transmission assembly in , wherein the transmission assembly is in a first state;

[0083] Figure 8 for Figure 7 A schematic top view of the transmission assembly shown;

[0084] Figure 9 For the Figure 8 A schematic cross-sectional view taken along line DD in FIG.

[0085] Figure 10 for Figure 5 Schematic diagram of the transmission assembly in , wherein the transmission assembly is in a second state;

[0086] Figure 11 for Figure 10 A schematic side cross-sectional view of the transmission assembly shown;

[0087] Figure 12 is a schematic structural diagram of the connection between the transmission assembly and the pressure relief assembly of the cooking appliance according to the second embodiment of the present invention, wherein the transmission assembly is in a first state; and

[0088] Figure 13 This is a structural diagram of the connection between the transmission assembly and the pressure relief assembly of a cooking appliance according to the second embodiment of the present invention, wherein the transmission assembly is in the second state.

[0089] Description of reference numerals:

[0090] 1 Cooking Utensil 10 Pot

[0091] 10a Cooking cabinet 11 Housing

[0092] 11a Base 12 Inner pot

[0093] 13 Middle plate 14 Cover assembly

[0094] 14a: Operation member 14b: Connection member

[0095] 14c transmission surface 15 heating component

[0096] 16 Base 17 Cover opening pressure relief mechanism

[0097] 20 Cover 20a Air blowing channel

[0098] 20b Pressure relief port 20c Chute

[0099] 20d Mounting hole 21 Cover

[0100] 22 Lining 23 Circuit Board Assembly

[0101] 24 air path integration device 25 / 125 transmission assembly

[0102] 25a / 125a top rod 25b / 125b first lever

[0103] 25c / 125c second lever 25d first rotating shaft

[0104] 25e second rotating shaft 25f third pin shaft

[0105] 25g limiting part 25h long hole

[0106] 26 cover assembly 27 / 127 pressure relief assembly

[0107] 27a push rod 27b pressure relief sealing element

[0108] 27c sealing part 27d pressure relief sealing element peripheral part

[0109] 27e pressure relief sealing element intermediate part 27f corrugated structure

[0110] 28 pressing ring 29 temperature measurement assembly

[0111] 30 pot body sealing ring 31 positioning structure

[0112] 31a protrusion 31b groove

[0113] 32a flange 32b accommodating groove

[0114] 33 / 133 first elastic member D1 first horizontal direction

[0115] D2 second horizontal direction DH vertical direction DETAILED DESCRIPTION

[0116] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without one or more of these specific details. In other instances, well-known features have not been described in detail to avoid obscuring aspects of the present application.

[0117] In order to thoroughly understand the present application, detailed structures will be presented in the following description. It is obvious that the implementation of the present application is not limited to the special details familiar to those skilled in the art.

[0118] It is to be understood that the terms used herein are for the purpose of describing specific embodiments and are not intended to be limiting of the present application, and that singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. When the terms "comprising" and / or "including" are used in this specification, they are intended to be equivalent to the term "consisting of, in respect to the features, integers, steps, operations, elements, and / or components that are included.

[0119] The ordinal numbers such as "first" and "second" used in the present application are merely identifiers rather than having any other meaning, such as a specific order. Also, for example, the term "first member" does not by itself imply the existence of a "second member", nor does the term "second member" by itself imply the existence of a "first member". It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and similar terms used herein are used for explanation purposes only and are not limiting.

[0120] Hereinafter, a more detailed description will be made of the specific embodiments of the present application with reference to the accompanying drawings, which show representative embodiments of the present application and are not intended to limit the present application.

[0121] The present application provides a cooking appliance.

[0122] First embodiment

[0123] Please refer to Figures 1 to 3 The cooking appliance 1 includes a cover 20 and a pot body 10. The pot body 10 has, for example, a cylindrical inner pot receiving portion. An inner pot 12 can be fixedly arranged at the inner pot receiving portion, or can be freely put into or taken out of the inner pot receiving portion to facilitate cleaning of the inner pot 12. The inner pot 12 is usually made of a metal material and has a circular opening for containing food materials to be heated, such as rice, soup, etc. The pot body 10 includes a heating assembly 15 (e.g. a coil plate) for heating the inner pot 12 to heat the inner pot 12.

[0124] It can be understood that the cooking appliance 1 of the present application can be an electric rice cooker, an electric pressure cooker or other cooking appliance, and the cooking appliance 1 can have various functions in addition to the function of cooking rice, such as cooking porridge.

[0125] The cover 20 has a shape substantially corresponding to that of the pot body 10. The cover 20 is arranged on the pot body 10 in an openable and closable manner. Please refer to Figure 3In order to facilitate the opening of the cover 20, the cooking utensil 1 can further be provided with a pivot shaft 34 and a torsion spring 35. Specifically, the pivot shaft 34 is arranged on the pot body 10, and the cover 20 is pivotably connected to the pivot shaft 34 about the pivot shaft 34. The torsion spring 35 is sleeved on the pivot shaft 34, and the two arms of the torsion spring 35 abut against the cover 20 and the pot body 10, respectively. In this way, when the user operates to open the cover, the cover 20 can be automatically pivoted to the open position under the elastic force of the torsion spring 35, so that the operation of the cooking utensil 1 is more convenient and labor-saving.

[0126] When the cover 20 is closed on the pot body 10, it covers the inner pot 12, and a cooking cavity 10a for heating food materials is formed between the cover 20 and the inner pot 12. Please refer to Figure 3 The pot body 10 can include a base 16, an outer shell 11 connected to the base 16, and a middle plate 13 arranged on the inner side of the outer shell 11. In a side view, the middle plate 13 is generally T-shaped (see Figure 1 The part of the middle plate 13 corresponding to the horizontal direction of the T is located above the outer shell 11, and the outer shell 11 is located between the middle plate 13 and the base 16 and can connect the outer periphery of the middle plate 13 and the outer periphery of the base 16 together, so that the middle plate 13, the outer shell 11, and the base 16 jointly constitute the surface of the pot body 10. The part of the middle plate 13 corresponding to the vertical direction of the T has a hollow structure, which surrounds the inner pot receiving portion. The middle plate 13 can also be connected with the base 16 by fasteners such as screws. The lower part of the base 16 is provided with a foot 11a to facilitate the placement of the cooking utensil 1. In order to improve the sealing performance of the cover 20 and the pot body 10 after being closed, please refer to Figure 3 and Figure 4 The cooking utensil 1 is further provided with a pot body sealing ring 30, which is located between the cover 20 and the inner pot 12 after the cover 20 is closed, so as to make the outer periphery of the inner pot 12 airtight.

[0127] It should be noted that the directional terms used herein in the description of various components, parts, etc. of the cooking utensil 1, such as "upper", "lower", "upper side", "lower side", "upward", "downward", "upwardly", "downwardly", etc. are relative to the cooking utensil 1 in the state of being horizontally placed and vertically standing with the cover 20 closed on the pot body 10. If not otherwise specified, "inward" in the directional terms "inward", "outward", "inwardly", "outwardly", "inner side", "outer side", etc. means close to the center of the cooking utensil 1, and "outward" means away from the center of the cooking utensil 1.

[0128] Please refer to Figures 1 to 4The cover 20 can include a face cover 21 and an inner liner 22. The face cover 21 is an outer shell of the cover 20, and the inner liner 22 is connected to a lower inner side of the face cover 21 and is wrapped by the face cover 21. The cover 20 further includes a circuit board assembly 23 disposed in the inner liner 22 for establishing a circuit connection inside the cover 20. The cooking appliance 1 is further provided with a temperature measurement assembly 29, for example, disposed in the cover 20 for sensing a steam temperature in the cooking cavity 10a.

[0129] It can be understood that the cooking appliance 1 further includes a control device (not shown) for realizing cooking control of the cooking appliance 1. The control device can be, for example, a micro control unit (MCU), which coordinates the orderly operation of various components of the cooking appliance 1. For example, the temperature measurement assembly 29 and the heating assembly 15 are electrically connected to the control device, the temperature measurement assembly 29 feeds back a signal to the control device, and the control device controls the orderly operation of the heating assembly 15 after processing the signal from the temperature measurement assembly 29. The control device and the electric components in the cover 20 are electrically connected to the circuit board assembly 23, so that the control device controls the electric components in the cover 20 through the circuit board assembly 23.

[0130] The cover 20 is further provided with a gas path integration device 24, which is in communication with the cooking cavity 10a when the cover 20 covers the pot body 10, for realizing functions such as steam discharge. During the cooking process, when the internal pressure of the cooking cavity 10a exceeds a set value, the gas path integration device 24 will automatically open a passage to release excess steam, so as to prevent safety accidents such as explosion.

[0131] The cooking process of the cooking appliance 1 includes, for example, a preheating process, a water absorption process, a boiling process, a boiling maintenance process, a braising process, and a temperature maintaining process. The preheating process is used for preliminary heating of food materials. In the water absorption process, the food materials are fully watered to improve the taste. In the boiling process, the food materials are heated to a temperature close to boiling by using a large fire, and then boiled in the boiling maintenance process to make the food materials basically cooked. In the braising process, the residual free water is dried to further cook the food materials. Finally, in the temperature maintaining process, the food materials are kept warm so that the user can eat hot food.

[0132] In order to improve the cooking quality, generally, negative pressure is drawn in the cooking cavity 10a in the water absorption process, that is, the air pressure in the cooking cavity 10a is lower than the ambient air pressure, and the negative pressure environment is beneficial to the food materials to fully absorb water. Negative pressure is also drawn in the cooking cavity 10a in the temperature maintaining process, and the negative pressure environment is beneficial to food preservation. In order to improve the cooking efficiency, cold air is blown into the cooking cavity 10a in the boiling maintenance process, that is, the ambient air is discharged into the cooking cavity 10a, which plays a role in preventing the pot from overflowing. Thus, in the boiling maintenance process, the heating assembly 15 can maintain a relatively high power, which is beneficial to the food materials to be quickly cooked.

[0133] To achieve the above functions, the cover body 20 is further provided with a gas pump (not shown), a blowing channel 20a and a suction channel (not shown). When the cover body 20 covers the pot body 10, the blowing channel 20a and the suction channel are both in communication with the cooking cavity 10a. The gas outlet of the gas pump is connected to the blowing channel 20a, and external ambient cold air can be blown into the cooking cavity 10a through the blowing channel 20a, thereby preventing overflow. The gas inlet of the gas pump is connected to the suction channel, and negative pressure can be drawn in the cooking cavity 10a through the suction channel, thereby realizing water absorption of food materials under negative pressure and fresh-keeping of food under negative pressure. It can be understood that the gas pump works under the control of the control device. The gas paths for steam exhaust, cold air blowing and negative pressure suction of the cooking cavity 10a are integrated in the gas path integration device 24, for example. The gas path integration device 24 controls the opening and closing of different gas paths through multiple valves to realize orderly work.

[0134] The cover body 20 is provided with a pressure relief channel in communication with the environment, which is used to communicate with the cooking cavity 10a when the cover body 20 covers the pot body 10, so that the cooking cavity 10a is in communication with the environment, and the gas pressure inside and outside the cooking appliance 1 is the same. Please refer to Figure 3 and Figure 4 , the cover body 20 has a pressure relief port 20b provided on the pressure relief channel. When the pressure relief port 20b is closed, the pressure relief channel is blocked, and when the pressure relief port 20b is opened, the pressure relief channel is conducted, so that the pressure relief port 20b is used to communicate the environment and the cooking cavity 10a.

[0135] Further, the cooking appliance 1 further comprises a pressure relief assembly 27 and an uncovering pressure relief mechanism 17. Specifically, the pressure relief assembly 27 is provided in the cover body 20, and the pressure relief assembly 27 is used to open and close the pressure relief port 20b. When the pressure relief assembly 27 closes the pressure relief port 20b, the cooking cavity 10a cannot communicate with the environment through the pressure relief port 20b, and when the pressure relief assembly 27 opens the pressure relief port 20b, the cooking cavity 10a can communicate with the environment through the pressure relief port 20b. The uncovering pressure relief mechanism 17 is provided in the cover body 20 and connected to the pressure relief assembly 27. It should be noted that the uncovering pressure relief mechanism 17 has a first state and a second state. The uncovering pressure relief mechanism 17 in the first state makes the pressure relief assembly 27 close the pressure relief port 20b, and the uncovering pressure relief mechanism 17 in the second state makes the pressure relief assembly 27 open the pressure relief port 20b.

[0136] The cooking appliance 1 further comprises an uncovering assembly 14, which is provided in the pot body 10, for example. In the case that the cover body 20 covers the pot body 10, the uncovering assembly 14 is used to act on the uncovering pressure relief mechanism 17 under the operation of the user, so that the uncovering pressure relief mechanism 17 is in the second state, and the cover body 20 is opened. Among them, the uncovering pressure relief mechanism 17 comprises a lever, which is used to connect the uncovering assembly 14 and the pressure relief assembly 27.

[0137] According to the cooking utensil 1, the cover opening assembly 14 can control the pressure relief assembly 27 to open the pressure relief port 20b to achieve pressure relief when the cover is opened, thereby solving the technical problem of difficulty in opening the cover of the existing cooking utensil with negative pressure and facilitating operation.

[0138] The cover opening and pressure relief mechanism 17 comprises, for example, a cover closing part 26 and a transmission assembly 25. The cover opening assembly 14 acts on the cover closing part 26 and the transmission assembly 25 to achieve cover opening and closing and pressure relief.

[0139] The cover opening assembly 14 is used to be connected to the cover closing part 26 to open and close the cover 20 of the pot body 10. Please refer to Figures 3 to 6 , the cover opening assembly 14 is movable relative to the pot body 10 between an initial position and an action position. In the case where the cover 20 closes the pot body 10, the cover opening assembly 14 is used to move from the initial position to the action position under the operation of the user to be disconnected from the cover closing part 26 to open the cover 20. When the user fastens the cover 20, the cover opening assembly 14 can be automatically connected to the cover closing part 26 and then automatically located at the initial position. Alternatively, in the case where the cover 20 closes the pot body 10, when the cover opening assembly 14 is located at the initial position, the cover opening assembly 14 is connected to the cover closing part 26 and makes the cover opening and pressure relief mechanism 17 in a first state; when the cover opening assembly 14 is located at the action position, the cover opening assembly 14 makes the cover opening and pressure relief mechanism 17 in a second state.

[0140] Further, in the case where the cover 20 closes the pot body 10, the transmission assembly 25 is used to connect the cover opening assembly 14 and the pressure relief assembly 27, and the transmission assembly 25 comprises the aforementioned lever. The transmission assembly 25 has the aforementioned first state (see Figure 3 and Figure 4 ) and the second state (see Figure 5 and Figure 6 ), the transmission assembly 25 in the first state makes the pressure relief assembly 27 close the pressure relief port 20b, and the transmission assembly 25 in the second state makes the pressure relief assembly 27 open the pressure relief port 20b. In the case where the cover 20 closes the pot body 10, when the cover opening assembly 14 is located at the action position, the cover opening assembly 14 makes the transmission assembly 25 in the second state. That is, in the case where the cover 20 closes the pot body 10, when the user operates the cover opening assembly 14, the cover can be opened, and at the same time, the pressure relief port 20b is opened. If the cooking cavity 10a is under negative pressure at this time (for example, in the heat preservation process), the negative pressure in the cooking cavity 10a is released at the same time as the cover is opened, so that the cover 20 can be opened.

[0141] It should be noted that none of the cover closing part 26, the cover opening assembly 14, the pressure relief assembly 27 and the transmission assembly 25 contains an electric control part, and the parts are connected mechanically, which improves the safety and reliability of the cooking utensil 1 and reduces the production cost.

[0142] Please refer to Figure 3 and Figure 4 When the cover 20 is closed, the opening cover assembly 14 is connected to the cover closing assembly 26 when the opening cover assembly 14 is in the initial position, and the transmission assembly 25 is in the first state. The cover 20 is further provided with a first elastic member 33 connected to the transmission assembly 25 to change the transmission assembly 25 from the second state to the first state. Thus, after the negative pressure is released, the pressure relief assembly 27 re-closes the pressure relief port 20b under the action of the first elastic member 33, so that the air pump can again draw negative pressure for the cooking cavity 10a.

[0143] Specifically, the aforementioned lever includes a second lever 25c rotatable relative to the cover 20. The effort point of the second lever 25c is used to connect the opening cover assembly 14, and the resistance point of the second lever 25c is connected to the pressure relief assembly 27, so that at least part of the pressure relief assembly 27 moves synchronously with the second lever 25c.

[0144] Further, the transmission assembly 25 further includes a top rod 25a, and the aforementioned lever further includes a first lever 25b. The top rod 25a is movable up and down relative to the cover 20, and the top rod 25a is located below the first lever 25b. The upper end of the top rod 25a is used to connect the effort point of the first lever 25b, and the lower end of the top rod 25a is used to connect the opening cover assembly 14. The first lever 25b is rotatable relative to the cover 20, the effort point of the first lever 25b is connected to the opening cover assembly 14 through the top rod 25a, and the resistance point of the first lever 25b is connected to the effort point of the second lever 25c. Thus, the force of the opening cover assembly 14 is transmitted to the pressure relief assembly 27 through the top rod 25a, the first lever 25b and the second lever 25c in sequence.

[0145] The cover 20 further has a sliding groove 20c extending in the vertical direction DH inside the cover 20, and the top rod 25a is arranged in the sliding groove 20c. It should be noted that the top rod 25a has a limiting portion 25g, and the radial dimension of the limiting portion 25g is greater than the inner diameter of the sliding groove 20c and is located above the sliding groove 20c. Thus, the top rod 25a moves stably under the guidance of the sliding groove 20c and cannot be pulled out of the sliding groove 20c.

[0146] Please refer to Figures 3 to 11For example, a first rotating shaft 25d and a second rotating shaft 25e are fixed in position in the cover body 20. The middle part of the first lever 25b is pivotally connected to the first rotating shaft 25d, and the middle part of the second lever 25c is pivotally connected to the second rotating shaft 25e. The top rod 25a acts on one end of the first lever 25b, and the end of the first lever 25b away from the top rod 25a is connected to one end of the second lever 25c, and the other end of the second lever 25c is connected to the pressure relief assembly 27. In other words, the first lever 25b and the second lever 25c both have their fulcrums located in the middle, and the force point and the resistance point are respectively located at the two ends. The first rotating shaft 25d and the second rotating shaft 25e extend, for example, in the horizontal direction. The first rotating shaft 25d and the second rotating shaft 25e are, for example, parallel to each other.

[0147] The cover 20 is also provided with a third pin 25f. The third pin 25f is located at the resistance point of the first lever 25b. The force point of the second lever 25c is provided with an elongated hole 25h, through which the third pin 25f extends. Thus, the resistance point of the first lever 25b and the force point of the second lever 25c are connected via the third pin 25f. When the first lever 25b rotates, the third pin 25f moves with the resistance point of the first lever 25b, thereby driving the force point of the second lever 25c to move, causing the second lever 25c to rotate. The third pin 25f connects the resistance point of the first lever 25b with the force point of the second lever 25c. It is understood that the third pin 25f can also be located at the force point of the second lever 25c, with the elongated hole 25h located at the resistance point of the first lever 25b.

[0148] In the first embodiment, the first lever 25b and the second lever 25c extend in one plane, or extend in planes parallel to each other. Of course, the first lever 25b and the second lever 25c may also extend in different planes. Figure 9 As shown, in the first state of the transmission assembly 25, the push rod 25a is located at the first push rod position, and the first lever 25b and the second lever 25c are basically in a horizontal position. At this time, the pressure relief assembly 27 basically extends in the vertical direction, and the sealing portion 27c is located directly above the pressure relief port 20b. Figure 11 As shown, in the second state of the transmission assembly 25, the push rod 25a is in the upper second push rod position, and the first lever 25b and the second lever 25c rotate in opposite directions. At this time, the push rod 27a of the pressure relief assembly 27 rotates synchronously with the second lever 25c. The second end (the lower end in the figure) of the push rod 27a engages the middle portion 27e of the pressure relief seal, causing the seal portion 27c to deviate from the pressure relief port 20b, thereby at least partially exposing the pressure relief port 20b.

[0149] The first elastic member 33 is connected to the first lever 25b or the second lever 25c, for example Figure 4and Figure 6 In the embodiment, the first elastic member 33 is located below the resistance point end of the first lever 25b, and is used to act on the resistance point end of the first lever 25b. The two ends of the first elastic member 33 are connected to the first lever 25b and the cover 20 respectively. Of course, the first elastic member 33 can also be used to act on the force point end of the first lever 25b.

[0150] Please refer to Figure 4 and Figure 6 The lid opening assembly 14 can include an operating member 14a and a connecting member 14b. The operating member 14a is used for user operation, and is movably connected to the pot body 10 between an initial position and an action position along the first horizontal direction D1, for example. The connecting member 14b is pivotally connected to the pot body 10 about an axis extending along a second horizontal direction D2. The second horizontal direction D2 is perpendicular to the first horizontal direction D1. One end (e.g. the lower end) of the connecting member 14b is connected to the operating member 14a, and the other end (e.g. the upper end) of the connecting member 14b is connected to the top lever 25a. It should be noted that when the operating member 14a is located at the initial position, the connecting member 14b is connected to the lid closing member 26 in the case that the cover 20 covers the pot body 10, and when the operating member 14a is located at the action position, the connecting member 14b is separated from the lid closing member 26. Thus, the connecting member 14b is the central component for coordinating the opening and closing of the cover 20 and the pressure relief opening 20b.

[0151] Preferably, the pivot shaft 34, the first rotation shaft 25d, the second rotation shaft 25e and the third pin shaft 25f are all extended along the second horizontal direction D2.

[0152] The operating member 14a is exposed to the shell 11, and can be configured as an opening lid button. The connecting member 14b and the lid closing member 26 can be configured as a pair of buckles. It is easy to think that the operating member 14a can automatically return to the initial position after the pressing force is removed, and thus the pot body 10 is further provided with a second elastic member (not shown) located between the operating member 14a and the middle plate 13. The second elastic member is used to drive the operating member 14a to return from the action position to the initial position.

[0153] Further, in order to make the transmission of the ejector rod 25a and the connecting member 14b more smooth, at least one of the lower end of the ejector rod 25a and the end (e.g. upper end) of the connecting member 14b away from the operating member 14a includes a transmission surface 14c which is inclined with respect to both the vertical direction DH and the first horizontal direction D1. For example, the other end of the connecting member 14b has a transmission surface 14c which is inclined with respect to both the vertical direction DH and the first horizontal direction D1. Preferably, the transmission surface 14c and the structure of the connecting member 14b for connecting with the cover member 26 are both provided at the same end (e.g. upper end) of the connecting member 14b, so that the connecting member 14b is compact. The transmission surface 14c and the connecting structure are located at different sides (e.g. opposite sides) of the connecting member 14b, so that the transmission surface 14c and the connecting structure do not interfere with each other. In the illustrated embodiment, the transmission surface 14c is located at the side of the connecting member 14b facing outward, and the connecting structure (e.g. buckle) is located at the side of the connecting member 14b facing inward.

[0154] Please refer to Figure 4 and Figure 6 The pressure relief assembly 27 includes a push rod 27a and a pressure relief seal 27b. The push rod 27a drives the pressure relief seal 27b to move relative to the cover body 20 between a closed position in which the pressure relief port 20b is closed and a pressure relief position in which the pressure relief port 20b is opened. Specifically, a first end of the push rod 27a is connected to the second lever 25c to move synchronously with the second lever 25c. The pressure relief seal 27b is connected to a second end of the push rod 27a for opening and closing the pressure relief port 20b.

[0155] Further, the cover body 20 is provided with a mounting through hole 20d which is the same as the axial direction of the pressure relief port 20b, the mounting through hole 20d is spaced apart from the pressure relief port 20b along the axial direction, and the pressure relief seal 27b is connected to the mounting through hole 20d. Figure 4 and Figure 6 In the above, the axial direction of the pressure relief port 20b is the vertical direction DH, and the pressure relief assembly 27 is located above the pressure relief port 20b. Correspondingly, the rotation axes of the first lever 25b and the second lever 25c extend along a horizontal direction (e.g. the second horizontal direction D2).

[0156] The pressure relief seal 27b comprises a pressure relief seal intermediate portion 27e and a pressure relief seal peripheral portion 27d connected in sequence from inside to outside in the radial direction (relative to the aforementioned axial direction). The pressure relief seal 27b is preferably made of an elastic material, so that the pressure relief seal intermediate portion 27e is movable relative to the pressure relief seal peripheral portion 27d. Specifically, the pressure relief seal peripheral portion 27d is connected to the periphery of the mounting through hole 20d, the side of the pressure relief seal intermediate portion 27e away from the pressure relief port 20b is connected to the second end of the push rod 27a, and the side of the pressure relief seal intermediate portion 27e facing the pressure relief port 20b is used to open and close the pressure relief port 20b. In other words, the second end of the push rod 27a is used to pass through the mounting through hole 20d and is connected to the pressure relief seal intermediate portion 27e.

[0157] For example, the pressure relief seal intermediate portion 27e comprises a pleated structure 27f extending in the radial direction and concave-convex in the axial direction, so that the pressure relief seal intermediate portion 27e can move relative to the pressure relief seal peripheral portion 27d. This is because the pleated structure 27f is formed by folding the material, so that the material can be stretched or squeezed to achieve relative movement. When the transmission assembly 25 drives the pressure relief assembly 27 to move, due to the presence of the pleated structure 27f, the pressure relief seal intermediate portion 27e moves relative to the pressure relief seal peripheral portion 27d, that is, the pressure relief seal intermediate portion 27e moves relative to the pressure relief port 20b, thereby deviating from the position of closing the pressure relief port 20b, so that the pressure relief port 20b is opened.

[0158] In addition, in order to better seal the pressure relief port 20b, the pressure relief seal 27 comprises a sealing portion 27c. The sealing portion 27c is arranged on the side of the pressure relief seal intermediate portion 27e facing the pressure relief port 20b. The sealing portion 27c is configured in the shape of the side surface of a circular truncated cone, or in other words, the sealing portion 27c is configured in the shape of a horn with the opening facing the pressure relief port 20b. Among them, the radial dimension of the side of the sealing portion 27c close to the pressure relief port 20b is greater than the radial dimension of the side away from the pressure relief port 20b.

[0159] For the purpose of facilitating the dismounting, maintenance and replacement of the pressure relief seal 27b, the pressure relief seal 27b is configured to be detachable relative to the push rod 27a and the mounting through hole 20d. Specifically, the pressure relief seal middle part 27e is detachably sleeved outside the second end of the push rod 27a. Preferably, one of the push rod 27a and the pressure relief seal middle part 27e is provided with a receiving groove 32b extending in the circumferential direction, the groove opening and the groove bottom of the receiving groove 32b are opposite in the radial direction. The other of the push rod 27a and the pressure relief seal middle part 27e is provided with a flange 32a extending in the circumferential direction. It should be noted that the flange 32a protrudes in the radial direction, and the flange 32a is received in the receiving groove 32b. The push rod 27a and the pressure relief seal middle part 27e can also be provided with the flange 32a and the receiving groove 32b at the same time, the receiving groove 32b of the push rod 27a receives the flange 32a of the pressure relief seal middle part 27e, and at the same time, the receiving groove 32b of the pressure relief seal middle part 27e also receives the flange 32a of the push rod 27a.

[0160] For example Figure 4 and Figure 9 In the above-mentioned embodiments, the push rod 27a has two flanges 32a spaced apart in the vertical direction DH, and a receiving groove 32b is formed between the two flanges 32a. The pressure relief seal middle part 27e also has two flanges 32a spaced apart in the vertical direction DH, and a receiving groove 32b is formed between the two flanges 32a. The receiving groove 32b of the push rod 27a is located below the receiving groove 32b of the pressure relief seal middle part 27e. The lower flange 32a in the pressure relief seal middle part 27e is connected to the receiving groove 32b at the push rod 27a. Correspondingly, the upper flange 32a at the push rod 27a is connected to the receiving groove 32b in the pressure relief seal middle part 27e.

[0161] Preferably, the push rod 27a is configured to be detachably connected to the second lever 25c, for example, the two are connected by bolts.

[0162] For the mounting connection of the pressure relief seal 27b and the mounting through hole 20d, the cooking appliance 1 is further provided with a pressing ring 28, the pressing ring 28 contacts the pressure relief seal outer peripheral part 27d, so that the pressure relief seal outer peripheral part 27d is clamped between the mouth of the mounting through hole 20d and the pressing ring 28, and the push rod 27a passes through the through hole in the middle of the pressing ring 28; or in other words, the pressing ring 28 presses the pressure relief seal outer peripheral part 27d to the mouth of the mounting through hole 20d. Specifically, the pressing ring 28 is located on the side of the mounting through hole 20d away from the pressure relief port 20b, that is, the pressure relief seal outer peripheral part 27d is located on the side of the mounting through hole 20d away from the pressure relief port 20b.

[0163] In order to improve the mounting precision of the pressure relief seal 27b and the mounting through hole 20d, the pressure relief seal outer peripheral portion 27d and the mouth peripheral portion of the mounting through hole 20d are provided with a positioning structure 31. The positioning structure 31 can include a protrusion 31a and a groove 31b for accommodating the protrusion 31a. The protrusion 31a is provided on one of the side of the pressure relief seal outer peripheral portion 27d facing the mounting through hole 20d and the side of the mounting through hole 20d facing the pressure relief seal 27b, and the groove 31b is provided on the other of the side of the pressure relief seal outer peripheral portion 27d facing the mounting through hole 20d and the side of the mounting through hole 20d facing the pressure relief seal 27b. For example, the protrusion 31a is located on the pressure relief seal outer peripheral portion 27d, and the groove 31b is located on the mouth peripheral portion of the mounting through hole 20d.

[0164] In the illustrated embodiment, when the cover is opened, the user pushes the operating member 14a to the right in the drawing to the operating position. This causes the transmission assembly 25 to change to the second state. Specifically, the upper end of the connecting member 14b is deflected to the left, and the jacking rod 25a is jacked up. The jacking rod 25a causes the first lever 25b to rotate, and at the same time, the first elastic member 33 is compressed. The first lever 25b causes the second lever 25c to rotate. The second lever 25c drives the pressure relief assembly 27 to move, and the pressure relief assembly 27 opens the pressure relief port 20b.

[0165] When the force applied to the operating member 14a by the user is removed, the cover opening assembly 14 returns to the initial position under the action of the second elastic member, or the cover 20 has been opened, so that the connecting member 14b no longer exerts force on the jacking rod 25a. At this time, the first elastic member 33 causes the transmission assembly 25 to change from the second state to the first state. Specifically, the first elastic member 33 is stretched, causing the first lever 25b to rotate in the reverse direction, and the force point end of the first lever 25b causes the jacking rod 25a to fall back. Due to the connecting action of the third pin 25f, the resistance point end of the first lever 25b drives the force point end of the second lever 25c to rotate in the reverse direction. The second lever 25c drives the pressure relief assembly 27 to move, and the pressure relief assembly 27 closes the pressure relief port 20b. At the same time, in the case where the rotation axes of the two levers are both horizontal straight lines, the gravity of the pressure relief assembly 27 in the open position, which is inclined with respect to the vertical direction, also causes the second lever 25c to rotate in the reverse direction, so that the second lever 25c can also cause the first lever 25b to rotate in the reverse direction.

[0166] Second embodiment

[0167] Please refer to Figure 12 and Figure 13The transmission assembly 125 includes a top rod 125a, a first lever 125b, and a second lever 125c. Compared with the first embodiment, the difference is that one end of the first lever 125b away from the top rod 125a is pivotally connected to the cover 20, and one end of the second lever 125c away from the pressure relief assembly 127 is pivotally connected to the cover 20. Moreover, the middle portions of the first lever 125b and the second lever 125c are movably connected to each other. That is, the fulcrum of the first lever 125b and the second lever 125c is located at the end portion, the resistance point of the first lever 125b is located at the middle portion of the first lever 125b, the force point of the first lever 125b is located at the end portion of the first lever 125b, the force point of the second lever 125c is located at the middle portion of the second lever 125c, and the resistance point of the second lever 125c is located at the end portion of the second lever 125c.

[0168] In the second embodiment, the two levers are connected by a revolute pair at the middle position, so that the two levers do not extend in the same plane. In the second embodiment, the force point and the resistance point of each lever are located on the same side of the fulcrum, so that the force point and the resistance point rotate in the same direction relative to the fulcrum.

[0169] In the present application, the first lever and the second lever can be flexibly connected according to specific needs (such as cover space, moving stroke, etc.). The resistance point of the first lever can be located at the middle or end portion of the first lever, and the force point of the second lever can be located at the middle or end portion of the second lever.

[0170] In addition, in Figure 12 and Figure 13 , the first elastic member 133 acts on the force point end of the first lever 125b. For example, the first elastic member 133 is located above the force point end of the first lever 125b.

[0171] In the illustrated embodiment, when the cover is opened, the user pushes the operating member 14a to the right in the drawing to the acting position. This makes the transmission assembly 25 change to the second state. Specifically, the upper end of the connecting member 14b deflects to the left, and the top rod 25a is lifted up. The top rod 25a makes the first lever 25b rotate, and at the same time, the first elastic member 33 is compressed. The first lever 25b makes the second lever 25c rotate. The second lever 25c drives the pressure relief assembly 27 to move, so that the pressure relief assembly 27 opens the pressure relief opening 20b.

[0172] When the force applied to the operating member 14a is removed, the cover opening assembly 14 returns to the initial position under the action of the second elastic member, or the cover 20 has been opened, so that the connecting member 14b no longer exerts force on the top rod 25a. At this time, the first elastic member 33 makes the transmission assembly 25 change from the second state to the first state. Specifically, the first elastic member 33 is stretched, so that the first lever 25b is reversely rotated, and at the same time, the top rod 125a falls back. Due to the connecting effect of the rotating pair, the resistance point of the first lever 25b drives the force point of the second lever 25c to reversely rotate. The second lever 25c drives the pressure relief assembly 27 to move, so that the pressure relief assembly 27 closes the pressure relief port 20b. At the same time, in the case that the rotating axes of the two levers are both horizontal straight lines, the gravity of the pressure relief assembly 27 in the open position which is inclined relative to the vertical direction also makes the second lever 25c reversely rotate, so that the second lever 25c can also drive the first lever 25b to reversely rotate.

[0173] Parts not introduced in the second embodiment refer to the description in the first embodiment.

[0174] According to the cooking utensil, the cover opening assembly is used to trigger the pressure relief assembly to open or close the pressure relief port to achieve the purpose of pressure relief. Specifically, the cover opening assembly is used to drive the transmission assembly and the pressure relief assembly to link together to achieve pressure relief, thereby solving the technical problem of difficulty in opening the cover of the existing cooking utensil with negative pressure. Moreover, the transmission assembly adopts a lever structure, which can optimize the layout in the cover and save the internal space of the cover, and at the same time, the moving stroke of the pressure relief assembly can be adjusted. In addition, the cover opening assembly, the transmission assembly and the pressure relief assembly adopt a pure mechanical structure control, compared with electronic control, the failure rate and manufacturing cost are lower, and manual operation can be used to simply achieve the control.

[0175] Unless otherwise defined, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0176] The application has been described by the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and illustration, and are not intended to limit the application to the described embodiments. Those skilled in the art can understand that more variations and modifications can be made according to the teaching of the application, and these variations and modifications all fall within the scope of the application claimed.

Claims

1. A cooking utensil, characterized in that: The cooking appliance comprises: The pot body has a cooking cavity for holding and heating food; a cover body, openably connected to the pot body, the cover body having a pressure relief port for connecting the environment with the cooking cavity; A pressure relief assembly, disposed on the cover body, for opening and closing the pressure relief port; a cover-opening pressure relief mechanism, disposed on the cover body and connected to the pressure relief assembly, the cover-opening pressure relief mechanism having a first state and a second state, wherein in the first state, the cover-opening pressure relief mechanism causes the pressure relief assembly to close the pressure relief port, and in the second state, the cover-opening pressure relief mechanism causes the pressure relief assembly to open the pressure relief port; a lid opening assembly, which is used to act on the lid opening pressure relief mechanism under the operation of a user when the lid body covers the pot body, so as to place the lid opening pressure relief mechanism in the second state and open the lid body; Wherein, the cover opening pressure relief mechanism includes a lever, and the lever is used to connect the cover opening component and the pressure relief component.

2. The cooking appliance according to claim 1, wherein The cover opening pressure relief mechanism includes a cover closing component, The lid opening assembly is movable relative to the pot body between an initial position and an active position. When the lid body covers the pot body, the lid opening assembly is used to move from the initial position to the active position under the operation of the user to disconnect from the lid closing component so as to open the lid body.

3. The cooking appliance according to claim 2, wherein: When the cover covers the pot body, When the cover opening assembly is located at the action position, the cover opening assembly places the cover opening pressure relief mechanism in the second state; when the cover opening assembly is located at the initial position, the cover opening assembly is connected to the cover closing component and places the cover opening pressure relief mechanism in the first state.

4. The cooking appliance according to claim 3, wherein: The lid is pivotally connected to the pot body around a pivot axis, and the pivot axis and the lid opening assembly are respectively arranged on opposite sides of the pot body. The cooking utensil further comprises a torsion spring, which is sleeved on the pivot shaft, and two arms of the torsion spring respectively abut against the cover body and the pot body.

5. The cooking appliance according to claim 2, wherein: The lid opening pressure relief mechanism further includes a transmission assembly, which is used to connect the lid opening assembly and the pressure relief assembly when the lid body covers the pot body. The transmission assembly has the first state and the second state. The transmission assembly includes the lever.

6. The cooking appliance according to claim 5, characterized in that The lever includes a second lever, which is rotatable relative to the cover body. The force point of the second lever is used to connect the cover opening assembly, and the pressure relief assembly is connected to the resistance point of the second lever so that at least part of the pressure relief assembly moves synchronously with the second lever.

7. The cooking appliance according to claim 6, characterized in that The pressure relief assembly comprises: a push rod having a first end connected to the second lever so as to move synchronously with the second lever; and A pressure relief seal is connected to the second end of the push rod and is used to open and close the pressure relief port.

8. The cooking appliance according to claim 7, wherein: The cover body is provided with a mounting through hole, the mounting through hole is in the same axial direction as the pressure relief port, the mounting through hole and the pressure relief port are spaced apart along the axial direction, and the pressure relief seal is connected to the mounting through hole.

9. The cooking appliance according to claim 8, characterized in that The pressure relief seal comprises a pressure relief seal middle portion and a pressure relief seal outer peripheral portion which are sequentially connected from the inside to the outside in the radial direction, and the pressure relief seal middle portion is movable relative to the pressure relief seal outer peripheral portion. The outer periphery of the pressure relief seal is connected to the periphery of the mouth of the mounting through hole, and the second end of the push rod is connected to the middle part of the pressure relief seal, and the middle part of the pressure relief seal is used to open and close the pressure relief port.

10. The cooking appliance according to claim 9, characterized in that The cooking utensil further comprises a pressing ring, which presses the outer peripheral portion of the pressure relief seal against the periphery of the opening of the installation through hole.

11. The cooking appliance according to claim 10, wherein The pressing ring is located on a side of the mounting through hole facing away from the pressure relief port.

12. The cooking appliance according to claim 10, wherein A positioning structure is provided between the outer periphery of the pressure relief seal and the periphery of the mouth of the mounting through hole, the positioning structure comprising a protrusion and a groove for accommodating the protrusion, the protrusion being arranged at one of the outer periphery of the pressure relief seal and the periphery of the mouth of the mounting through hole, and the groove being arranged at the other of the outer periphery of the pressure relief seal and the periphery of the mouth of the mounting through hole.

13. The cooking appliance according to claim 9, wherein The pressure relief seal is made of elastic material. The middle portion of the pressure relief seal comprises a corrugated structure. The corrugated structure extends in a radial direction and is concave and convex in an axial direction.

14. The cooking appliance according to claim 7, wherein The pressure relief seal includes a sealing portion, which is arranged on a side of the pressure relief seal facing the pressure relief port, and the sealing portion is constructed in the shape of a side surface of a truncated cone, wherein a radial dimension of the sealing portion on a side close to the pressure relief port is greater than a radial dimension of a side away from the pressure relief port.

15. The cooking appliance according to claim 9, wherein The middle portion of the pressure relief seal is detachably sleeved on the outer side of the second end of the push rod.

16. The cooking appliance according to claim 15, wherein One of the push rod and the middle portion of the pressure relief seal is provided with an accommodating groove extending in the circumferential direction, wherein the groove opening and the groove bottom of the accommodating groove are opposite to each other in the radial direction. The other of the push rod and the pressure relief seal intermediate portion is provided with a flange extending in a circumferential direction, the flange protruding in a radial direction, and the flange is accommodated in the accommodation groove.

17. The cooking appliance according to claim 7, wherein The push rod is detachably connected to the second lever.

18. The cooking appliance according to claim 6, wherein The lever further includes a first lever, the first lever being rotatable relative to the cover body, the force point of the first lever being used to connect to the cover opening assembly, and the resistance point of the first lever being used to connect to the force point of the second lever. The resistance point of the first lever is located in the middle or at the end of the first lever, and the force point of the second lever is located in the middle or at the end of the second lever.

19. The cooking appliance according to claim 18, wherein The axis direction of the pressure relief port is vertical, the pressure relief assembly is located above the pressure relief port, and the rotation axis of the first lever and the rotation axis of the second lever extend in the horizontal direction.

20. The cooking appliance according to claim 18, wherein The transmission assembly also includes a push rod, which can move up and down relative to the cover body. The push rod is located below the first lever. The upper end of the push rod is used to connect to the force point of the first lever, and the lower end of the push rod is used to connect to the cover opening assembly.

21. The cooking appliance according to claim 20, wherein The cover opening assembly comprises: an operating member for operation by a user, wherein the operating member is movably connected to the pot body along a first horizontal direction between the initial position and the active position; and A connecting member is pivotally connected to the pot body about an axis extending in a second horizontal direction, the second horizontal direction being perpendicular to the first horizontal direction, one end of the connecting member is connected to the operating member, and the other end of the connecting member is used to connect to the top rod, Wherein, in the case where the cover body covers the pot body, when the operating member is located at the initial position, the connecting member is connected to the cover-closing component, and when the operating member is located at the active position, the connecting member is separated from the cover-closing component.

22. The cooking appliance according to claim 21, wherein At least one of the lower end of the push rod and the other end of the connecting member includes a transmission surface inclined relative to both the vertical direction and the first horizontal direction.

23. The cooking appliance according to claim 20, wherein The cover body further has a slide groove extending in the vertical direction, and the push rod is arranged in the slide groove; the push rod has a limiting portion, the radial dimension of the limiting portion is larger than the inner diameter of the slide groove, and is located above the slide groove.

24. The cooking appliance according to claim 18, wherein The cover body is further provided with a first elastic member connected to the transmission assembly to enable the transmission assembly to change from the second state to the first state.

25. The cooking appliance according to claim 24, wherein The first elastic member is connected to the first lever or the second lever.

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