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 the cover body is provided with a pressure relief opening used for communicating the environment and the cooking cavity. The pressure relief assembly is arranged on the cover body. The uncovering pressure relief mechanism is arranged on the cover body and connected to the pressure relief assembly. Under the condition that the cooker body is covered with 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 at least part of the cover opening pressure relief mechanism is located at the pressure relief position, and the cover body is opened. The pressure relief assembly comprises an inclined guide face used for making contact with the uncovering pressure relief mechanism. According to the cooking utensil, the uncovering assembly can control the pressure relief assembly to open the pressure relief opening to achieve the purpose of 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 generally relates to the technical field of kitchen appliances, and more particularly to a cooking utensil. Background Art

[0002] To improve the cooking performance of rice cookers, existing rice cookers typically use negative pressure pumping to increase the rice's water absorption rate. After cooking, negative pressure pumping also helps preserve the rice's freshness, providing consumers with a better cooking experience. Existing negative pressure cooking appliances often incorporate a negative pressure relief mechanism to facilitate smooth lid opening. However, these mechanisms are generally complex, costly, and prone to failure.

[0003] Therefore, it is necessary to provide a cooking appliance to at least partially solve the above problems. Utility Model Content

[0004] The Summary of the Utility Model introduces a series of simplified concepts that will be further described in the Detailed Description of the Utility Model. The Summary of the Utility Model of the Utility Model does not intend to limit the key features and essential technical features of the claimed technical solution, nor does it intend to determine the scope of protection of the claimed technical solution.

[0005] In order to at least partially solve the above problems, the present invention provides a cooking utensil, comprising:

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

[0007] a cover body, the cover body being openably connected to the pot body, the cover body having a pressure relief port for connecting the environment with the cooking cavity;

[0008] a pressure relief assembly disposed on the cover body, the pressure relief assembly being movable relative to the cover body along a first direction between a first closing position closing the pressure relief opening and a first pressure relief position opening the pressure relief opening;

[0009] a cover-opening pressure relief mechanism, disposed on the cover body and connected to the pressure relief assembly, wherein at least a portion of the cover-opening pressure relief mechanism is movable relative to the cover body along a second direction between a second closed position and a second pressure relief position, wherein when the at least portion of the cover-opening pressure relief mechanism is located in the second closed position, the pressure relief assembly is located in the first closed position, and when the at least portion of the cover-opening pressure relief mechanism is located in the second pressure relief position, the pressure relief assembly is located in the first pressure relief position; and

[0010] The cover opening assembly is used to act on the cover opening pressure relief mechanism under the operation of a user to make the at least part of the cover opening pressure relief mechanism be located at the second pressure relief position and make the cover body open when the cover body covers the pot body.

[0011] The pressure relief assembly comprises a guide surface inclined relative to the first direction and the second direction, and is used to contact the at least part of the cover opening pressure relief mechanism.

[0012] According to the scheme, the cover opening assembly can control the pressure relief assembly to open the pressure relief port to achieve the purpose of pressure relief while realizing the opening of the cover, and the technical problem that the existing cooking utensil with negative pressure is difficult to open is solved, and the operation is convenient.

[0013] Optionally, the cover opening 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 is used to move from the initial position to the action position under the operation of a user to be disconnected with the cover closing part to make the cover body open when the cover body covers the pot body.

[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 is used to move from the initial position to the action position under the operation of a user to be disconnected with the cover closing part to make the cover body open when the cover body covers the pot body.

[0016] Optionally, 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 at least part of the cover opening pressure relief mechanism be located at the second closed position when the cover body covers the pot body.

[0017] According to the scheme, the cover opening assembly is connected with the cover closing part, so that the cover opening pressure relief mechanism is always maintained at the second closed position without the operation of a user, that is, the pressure relief port is closed, and the airtightness of the cooking cavity is ensured, so that the cooking cavity can be subjected to negative pressure to improve the cooking effect.

[0018] Optionally,

[0019] 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.

[0020] 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.

[0021] According to this solution, the lid body and the pot body can be pivotally connected, and a torsion spring is connected to the lid body and the pot body. When the user operates the lid opening assembly to move from the initial position to the active position, the lid body can automatically pivot to the open position under the action of the torsion spring, making the operation of the cooking utensil more convenient and labor-saving.

[0022] Optionally, 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 includes a sliding rod, which can move between the second closed position and the second pressure relief position along the second direction relative to the lid body to move the pressure relief assembly along the first direction.

[0023] According to this solution, the transmission assembly mechanically connects the lid opening assembly and the pressure relief assembly through a sliding rod, and does not require the participation of electronic control components. The sliding rod control is simple and the performance is stable, which improves the safety and reliability of the cooking appliance and reduces production costs.

[0024] Optionally,

[0025] The cover body is further provided with a biasing member, which is used to act on the pressure relief assembly to move the pressure relief assembly from the first closed position to the first pressure relief position when the sliding rod is located at the second pressure relief position.

[0026] According to this solution, after the user operates the slide bar to the second pressure relief position through the cover opening assembly, the biasing member can ensure that the pressure relief assembly moves from the first closed position to the first pressure relief position, ensuring that the pressure relief port is opened.

[0027] Optionally, the pressure relief component includes:

[0028] a push rod member extending along the first direction and configured to be movable along the first direction between the first closed position and the first pressure relief position, wherein a first end of the push rod member abuts against the slide bar, and the guide surface is provided at the first end of the push rod member; and

[0029] a pressure relief seal connected to the second end of the push rod member and used to open and close the pressure relief port;

[0030] Wherein, the biasing member is used to act on the push rod component.

[0031] According to this solution, the pressure relief assembly has a simple structure, and the slide rod and the biasing member both act on the push rod member to ensure that the pressure relief seal follows the push rod member to move between the first closed position and the first pressure relief position to open and close the pressure relief port.

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

[0033] According to the scheme, the mounting through hole and the pressure relief port are in the same axial direction, and the pressure relief assembly moves along the axial direction of the pressure relief port to open and close 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 along the radial direction, the pressure relief sealing element intermediate portion is movable relative to the pressure relief sealing element peripheral portion along the first direction,

[0035] 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 member is used to pass through the mounting through hole and is connected to the pressure relief sealing element intermediate portion, and the pressure relief sealing element intermediate portion is used to open and close the pressure relief port.

[0036] According to the scheme, the pressure relief sealing element peripheral portion is connected to the port periphery of the mounting through hole, so that the pressure relief sealing element can be stably mounted on the cover body. The intermediate portion of the pressure relief sealing element is movable relative to the peripheral portion, so that the intermediate portion of the pressure relief sealing element moves under the action of the push rod to realize the opening and closing of the pressure relief port. The pressure relief assembly has a simple structure and stable performance.

[0037] Optionally, the cooking utensil further comprises a pressing ring, and the pressing ring is used to press the pressure relief sealing element peripheral portion to the port periphery of the mounting through hole.

[0038] According to the scheme, the pressure relief sealing element peripheral portion is fixed to the port periphery of the mounting through hole via the pressing ring, so that the pressure relief sealing element is firmly mounted and the assembly and maintenance of the pressure relief sealing element are also 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 pressure relief sealing element peripheral portion and the port periphery 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 pressure relief sealing element peripheral portion and the port periphery of the mounting through hole, and the groove is arranged on the other one of the pressure relief sealing element peripheral portion and the port periphery of the mounting through hole.

[0042] According to the present solution, the positioning structure is easy to process, and effectively improves the installation position precision of the pressure relief sealing member relative to the mounting through hole, and the positioning structure is convenient for installing the pressure ring.

[0043] Optionally, the first end of the push rod member has a first acting surface extending in the radial direction, and the biasing member is configured as a third spring, the third spring is sleeved on the outer periphery of the push rod member and is located between the mouth of the mounting through hole and the first acting surface.

[0044] According to the present solution, the biasing member is sleeved on the outer periphery of the push rod member, so that the movement path of the push rod member in the first direction is determined and accurate.

[0045] Optionally, the push rod member comprises:

[0046] a push rod, a first end of the push rod corresponding to the first end of the push rod member, a second end of the push rod corresponding to the second end of the push rod member, and the pressure relief sealing member being connected to the second end of the push rod; and

[0047] a push rod connecting cap connected to the first end of the push rod, the radial dimension of the push rod connecting cap being greater than the radial dimension of the push rod, the push rod connecting cap comprising the first acting surface, and the first acting surface being located on the outer periphery of the first end of the push rod.

[0048] According to the present solution, the push rod connecting cap has the first acting surface suitable for the push rod, ensuring the assembly precision of the push rod member.

[0049] Optionally, the push rod connecting cap has a first positioning groove and a second positioning groove extending in the first direction, the second positioning groove being an annular groove surrounding the outer periphery of the first positioning groove, the groove opening of the first positioning groove and the groove opening of the second positioning groove facing the second end of the push rod,

[0050] the first end of the push rod being located in and connected with the first positioning groove, the second positioning groove being used for accommodating the biasing member, and the groove bottom of the second positioning groove comprising the first acting surface.

[0051] According to the present solution, the biasing member is located in the positioning groove, which can ensure the stable position of the biasing member and thus stably play the role.

[0052] Optionally, the pressure ring is provided with a pressure ring sliding groove extending in the second direction, and the sliding rod is accommodated in the pressure ring sliding groove and is movable in the second direction in the pressure ring sliding groove.

[0053] According to the present solution, the connection position of the sliding rod and the pressure ring is determined, and the pressure ring sliding groove determines the movement path of the sliding rod relative to the pressure ring.

[0054] Optionally, the pressure relief seal is made of elastic material, and the middle part of the pressure relief seal comprises a pleat structure extending in the radial direction and concave-convex in the axial direction.

[0055] According to the present scheme, since the pressure relief seal is made of elastic material, the pleat structure can ensure effective deformation and movement of the middle part of the pressure relief seal 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 sealing degree of the pressure relief seal to the pressure relief port.

[0056] 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, and the sealing part is configured in the shape of the side surface of a circular truncated cone, wherein the radial dimension of the side of the sealing part close to the pressure relief port is greater than the dimension of the side away from the pressure relief port.

[0057] According to the present scheme, the sealing part is in the shape of a bell mouth, and the pressure relief port can be effectively covered in the area range of the sealing part, ensuring that the pressure relief port can be completely closed.

[0058] Optionally, the pressure relief seal is detachably sleeved on the outer periphery of the second end of the push rod member.

[0059] According to the present scheme, the pressure relief seal is easily detached relative to the push rod, facilitating the disassembly, maintenance and replacement of the pressure relief seal.

[0060] Optionally,

[0061] One of the second end of the push rod member and the pressure relief seal is provided with a receiving groove extending in the circumferential direction, and the groove opening and the groove bottom of the receiving groove are opposite in the radial direction.

[0062] The other of the second end of the push rod member and the pressure relief seal is provided with a flange extending in the circumferential direction, and the flange is convex in the radial direction, and the flange is received in the receiving groove.

[0063] According to the present 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.

[0064] Optionally,

[0065] When the slide rod is in the second closed position, the pressure relief assembly is in the first closed position, and when the slide rod is in the second pressure relief position, the pressure relief assembly is in the first pressure relief position.

[0066] The cover body is further provided with a second elastic member connected to the slide rod, for moving the slide rod from the second closed position to the second pressure relief position.

[0067] According to the present solution, the method of moving the slide rod from the second closed position to the second pressure relief position is simple, and after the slide rod is moved to the second pressure relief position, the pressure relief assembly opens the pressure relief opening under the action of the biasing member.

[0068] Optionally,

[0069] The slide rod comprises a slide rod first end and a slide rod second end arranged in opposite directions along the second direction, the slide rod first end is used for connecting the cover opening assembly, and the slide rod second end is used for contacting the push rod member,

[0070] The slide rod second end is provided with a slide rod through hole, and when the pressure relief assembly is located at the first pressure relief position, the first end of the push rod member is located in the slide rod through hole.

[0071] According to the present solution, the slide rod through hole can cooperate with the push rod member located at the first pressure relief position, so as to avoid the push rod member from being deviated at the cover opening position. At the same time, the slide rod through hole connects the slide rod with the push rod member, so that the second pressure relief position of the slide rod is stable.

[0072] Optionally, an outer peripheral surface of the first end of the push rod member is configured in the shape of a side surface of a cone or a circular truncated cone, so as to form the guide surface.

[0073] According to the present solution, the guide surface is arranged in an inclined manner, so as to facilitate the push rod member to enter and exit the slide rod through hole, and reduce the operation difficulty of the user.

[0074] Optionally, the cover body is further provided with a guide member, one end of the second elastic member is connected to the slide rod, and the other end of the second elastic member is connected to the guide member, the guide member comprises a guide member sliding groove, the guide member sliding groove extends along the second direction, the slide rod is accommodated in the guide member sliding groove and is movable along the second direction in the guide member sliding groove.

[0075] According to the present solution, the slide rod can be accurately moved along the guide member under the action of the second elastic member, so as to improve the transmission accuracy of the transmission assembly.

[0076] Optionally, the slide rod is further provided with a slide rod groove, the slide rod groove extends along the second direction, the second elastic member is accommodated in the slide rod groove, and the one end of the second elastic member is connected to the slide rod groove.

[0077] According to the present solution, the mounting position of the second elastic member relative to the slide rod is determined, so as to further ensure the transmission accuracy of the transmission assembly, and the structure of the cooking appliance is compact.

[0078] Optionally, the cover is further provided with a first elastic member connected to the transmission assembly to move the slide rod from the second pressure relief position to the second closed position along the second direction.

[0079] According to the present solution, after the user completes the operation of the cover opening assembly, the first elastic member can ensure the slide rod to return to the second closed position, so that the pressure relief port is closed after the cover is closed again.

[0080] Optionally, the transmission assembly further comprises:

[0081] a transmission member movable along the first direction relative to the cover, a first end of the transmission member configured to contact the slide rod, and a second end of the transmission member configured to connect the cover opening assembly;

[0082] wherein at least one of the end of the slide rod configured to contact the transmission member and the first end of the transmission member has an additional guide surface inclined relative to the first direction and the second direction.

[0083] According to the present solution, the slide rod and the transmission member have a guide surface therebetween to ensure smooth transmission between the slide rod and the transmission member.

[0084] Optionally, the cover is further provided with a pressing plate, the transmission member is movably connected to the pressing plate along the first direction, and the first elastic member is arranged between the pressing plate and the transmission member.

[0085] According to the present solution, the first elastic member can drive the transmission member to move relative to the pressing plate along the first direction.

[0086] Optionally, a side of the pressing plate facing the transmission member is provided with a guide column extending along the first direction, and the transmission member is provided with a guide hole through which the guide column extends and is movable along the first direction.

[0087] According to the present solution, the pressing plate and the transmission member are matched by the guide column and the guide hole to determine the movement path of the transmission member relative to the pressing plate.

[0088] Optionally, an end of the guide column is connected to a limiting portion, the limiting portion has a radial dimension greater than a hole diameter of the guide hole, and the limiting portion is located on a side of the guide hole facing away from the pressing plate.

[0089] According to the present solution, the transmission member will not slip relative to the pressing plate.

[0090] Optionally, the transmission member has a mounting groove accommodating the first elastic member.

[0091] According to the scheme, the installation groove is configured to enable the first elastic member to work stably.

[0092] Optionally, the first direction is a vertical direction, and the second direction is a third horizontal direction.

[0093] According to the scheme, the pressure relief assembly moves along the vertical direction between the closed position and the pressure relief position, so that the configuration of the cover body conforms to the conventional cooking utensil structure setting, and the manufacturing difficulty of the cover body is reduced.

[0094] Optionally, the transmission member comprises a top rod and a matching part, the top rod extends along the vertical direction, the matching part is located above the top rod and connected to the top rod, and the matching part comprises the first end of the transmission member.

[0095] The cover body further comprises a sliding groove extending along the vertical direction, the top rod is arranged in the sliding groove, the radial dimension of the matching part is greater than the inner diameter of the sliding groove, and the matching part is located above the sliding groove, and the lower end of the top rod is the second end of the transmission member.

[0096] According to the scheme, the position of the transmission member relative to the cover body is determined and easy to move along the vertical direction, and in the use state, the transmission member will not slip out of the sliding groove.

[0097] Optionally, the cover opening assembly comprises:

[0098] an operation member for being operated by a user, the operation member is movably connected to the pot body along the first horizontal direction between the initial position and the action position; and

[0099] a connecting member, the connecting member is pivotally connected to the pot body about an axis extending along a second horizontal direction, the second horizontal direction is perpendicular to the first horizontal direction, one end of the connecting member is connected to the operation member, and the other end of the connecting member is used to connect the second end of the transmission member.

[0100] In the case where 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 part, and when the operation member is located at the action position, the connecting member is separated from the cover closing part.

[0101] According to the scheme, the connecting member of the cover opening assembly is used to act synchronously with the cover closing part and the transmission assembly, so that the cover opening and pressure relief occur simultaneously, and the design of the cooking utensil has good human-machine ergonomics, and the convenience of operation is improved.

[0102] Optionally, at least one of the second end of the transmission member and the other end of the connecting member comprises a transmission surface inclined relative to the vertical direction and the first horizontal direction; and / or

[0103] The first horizontal direction is the same as the third horizontal direction.

[0104] According to the present solution, the transmission between the transmission member and the connecting member is smoother, so that the control of the operation member is more labor-saving; and / or the cooking utensil generally has a mirror-symmetrical shape, the moving direction of the operation member relative to the pot body is consistent with the extending direction of the slide rod, which is beneficial to simultaneously arranging the operation member and the slide rod on the symmetry plane of the cooking utensil, so that the pressure relief assembly and the pressure relief opening are also located on the symmetry plane, which is beneficial to the symmetrical force bearing of the cover body. BRIEF DESCRIPTION OF DRAWINGS

[0105] The following drawings for the embodiments of the present application are hereby incorporated as a part of the present application for the purpose of understanding the present application. The embodiments of the present application and the description thereof shown in the drawings are used to explain the principles of the present application. In the drawings,

[0106] Figure 1 is a schematic view of the three-dimensional structure of the cooking utensil according to a preferred embodiment of the present application;

[0107] Figure 2 is a schematic view of the cover body of the cooking utensil shown in Figure 1 is a schematic view of the cross section of the cooking utensil shown in

[0108] Figure 3 is a schematic view of the cover body of the cooking utensil shown in Figure 1

[0109] Figure 4 Figure 2 is a schematic view of the cross section of the cover body of the cooking utensil shown in

[0110] Figure 5 is an enlarged schematic view of part A in Figure 4

[0111] Figure 6 Figure 1 is a schematic view of the cross section of the cooking utensil shown in

[0112] Figure 7 is a schematic view of the cross section of the cover body of the cooking utensil shown in Figure 6

[0113] Figure 8 Figure 7

[0114] Figure 9 Figure 1 is an exploded schematic view of part of the components in the cover body of the cooking utensil shown in​​​​​​​​

[0115] Figure 10 Fig. 2 is a perspective view of the pressure ring shown in Fig. 1. Figure 9 Fig. 3 is another perspective view of the pressure ring shown in Fig. 1.

[0116] Figure 11 Fig. 4 is a side sectional view of the partial components shown in Fig. 1, wherein the pressure plate, the first elastic member and the transmission member are shown. Figure 9 Fig. 5 is a side sectional view of the partial components shown in Fig. 1, wherein the pressure plate, the first elastic member and the transmission member are shown.

[0117] BRIEF DESCRIPTION OF THE DRAWINGS

[0118] 1 cooking utensil 10 pot body

[0119] 10a cooking cavity 11 base

[0120] 11a foot 12 housing

[0121] 13 middle plate 14 lid opening assembly

[0122] 14a operating member 14b connecting member

[0123] 14c transmission surface 15 heating assembly

[0124] 16 inner pot 17 lid opening pressure relief mechanism

[0125] 20 lid body 20a air blowing passage

[0126] 20b pressure relief port 20c sliding groove

[0127] 20d mounting through hole 21 face cover

[0128] 21a face plate 21b circuit board assembly

[0129] 21c circuit board assembly sealing ring 21d face cover body

[0130] 21e detachable cover assembly 22 inner liner

[0131] 23 lid closing component 24 air path integration device

[0132] 25 transmission assembly 25a transmission member

[0133] 25b top rod 25c matching portion

[0134] 25d first additional guide surface 25e sliding rod

[0135] 25f inner circumferential surface 25g mounting groove

[0136] 25h sliding rod through hole 25j sliding rod groove

[0137] 25k second additional guide surface 25m guide hole

[0138] 25p first end of slide rod 25q second end of slide rod

[0139] 25s first end of transmission member 25t second end of transmission member

[0140] 26 first elastic member 27 pressure relief assembly

[0141] 27a push rod 27b pressure relief seal

[0142] 27c outer circumferential portion of pressure relief seal 27d intermediate portion of pressure relief seal

[0143] 27e corrugated structure 27f sealing portion

[0144] 27g connecting cap of push rod 27h outer circumferential surface

[0145] 27j first positioning groove 27k second positioning groove

[0146] 27m push rod member 27n first acting surface

[0147] 28 pressure ring 28a slide groove of pressure ring

[0148] 29 temperature measurement assembly 30 sealing ring of pot body

[0149] 31 positioning structure 31a protrusion

[0150] 31b groove 32a flange

[0151] 32b accommodating groove 33 biasing acting member

[0152] 34 pivot shaft 35 torsion spring

[0153] 36 pressing plate 36a guide post

[0154] 36b limiting portion 37 second elastic member

[0155] 38 guide member 38a slide groove of guide member

[0156] D1 first direction D2 second direction DETAILED DESCRIPTION

[0157] In the following description, numerous specific details are set forth to provide a more thorough understanding of the present application. However, it will be apparent to one of ordinary skill 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 order to avoid obscuring the present application.

[0158] 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.

[0159] It should be understood that the terms used herein are for the purpose of describing specific embodiments and are not intended to limit the present application, and the singular forms "a", "an" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise. When the terms "comprise" and / or "include" are used in the specification, it means that the stated features, integers, steps, operations, elements, and / or components exist, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or combinations thereof.

[0160] The ordinal numbers such as "first" and "second" cited in the present application are merely identifiers rather than having any other meaning, for example, a specific order, etc. Moreover, for example, the term "first member" itself does not imply the existence of the "second member", and the term "second member" itself does not imply the existence of the "first member". It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and similar expressions used in the present application are for illustrative purposes only, not limiting.

[0161] In the following, specific embodiments of the present application will be described in more detail with reference to the accompanying drawings, which show representative embodiments of the present application and are not intended to limit the present application.

[0162] The present application provides a cooking appliance.

[0163] Please refer to Figure 1 and Figure 2 The cooking appliance 1 includes a cover body 20 and a pot body 10. The pot body 10 has, for example, a cylindrical inner pot receiving portion. An inner pot 16 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 16. The inner pot 16 is usually made of a metal material and has a circular opening for holding food materials to be heated, such as rice, soup, etc. The pot body 10 includes a heating assembly 15 (e.g., a coil disc) for heating the inner pot 16 to heat the inner pot 16.

[0164] It can be understood that the cooking appliance 1 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.

[0165] The cover body 20 has a shape substantially corresponding to the pot body 10. The cover body 20 is arranged on the pot body 10 in an openable and closable manner. Please refer to Figures 2 to 4 In order to facilitate the opening of the cover body 20, the cooking appliance 1 can also be provided with a pivot shaft 34 and a torsional spring 35. Specifically, the pivot shaft 34 is arranged on the pot body 10, and the cover body 20 is pivotally connected to the pivot shaft 34 around the pivot shaft 34. The torsional spring 35 is sleeved on the pivot shaft 34, and the two arms of the torsional spring 35 abut against the cover body 20 and the pot body 10, respectively. In this way, when the user operates to open the cover, the cover body 20 can be automatically pivoted to the open position under the elastic force of the torsional spring 35, so that the operation of the cooking appliance 1 is more convenient and labor-saving.

[0166] When the cover body 20 is closed on the pot body 10, it covers the inner pot 16, and a cooking cavity 10a for heating food materials is formed between the cover body 20 and the inner pot 16. Please refer to Figure 1 and Figure 2 The pot body 10 can include a base 11, an outer shell 12 connected to the base 11, and a middle plate 13 arranged on the inner side of the outer shell. In a side view, the middle plate 13 is generally T-shaped. The part of the middle plate 13 corresponding to the horizontal direction of the T is located above the outer shell 12, and the outer shell 12 is located between the middle plate 13 and the base 11 and can connect the outer periphery of the middle plate 13 and the outer periphery of the base 11 together, so that the middle plate 13, the outer shell 12 and the base 11 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 11 by fasteners such as screws. The lower part of the base 11 is provided with a foot 11a to facilitate the placement of the cooking appliance 1. In order to improve the sealing performance of the cover body 20 and the pot body 10 after being closed, please refer to Figure 2 and Figure 3 The cooking appliance 1 is also provided with a pot body sealing ring 30, which is located between the cover body 20 and the inner pot 16 after the cover body 20 is closed, so that the outer periphery of the inner pot 16 is sealed.

[0167] It should be noted that the directional terms used herein in describing 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 a state that the cover 20 is closed to the pot 10, horizontally placed and upright. If no other limitation, "in" in the directional terms "inward", "outward", "inwardly", "outwardly", "inner side", "outer side", etc. means close to the center of the cooking utensil 1, and "out" means away from the center of the cooking utensil 1.

[0168] Referring to Figure 3 The 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 the inner lower part of the face cover 21 and wrapped by the face cover 21. Specifically, the face cover 21 includes a face plate 21a and a face cover body 21d that are buckled to each other, and the face plate 21a is located above the face cover body 21d. The cover 20 further includes a circuit board assembly 21b, and the face cover body 21d has an assembly groove recessed towards the inside of the face cover body 21d, and the circuit board assembly 21b is installed into the assembly groove for establishing a line connection inside the cover 20. In order to improve the fit of the circuit board assembly 21b and the inner wall of the assembly groove, the cover 20 further includes a circuit board assembly sealing ring 21c, which is sleeved to the outer periphery of the circuit board assembly 21b and located in the assembly groove. The cover 20 further includes a detachable cover assembly 21e, which is detachably connected to the inner liner 22. The pot sealing ring 30 is generally sleeved to the outer periphery of the detachable cover assembly 21e. The cooking utensil 1 is further provided with a temperature measuring assembly 29, for example, the temperature measuring assembly 29 is arranged in the cover 20 for sensing the temperature in the cooking cavity 10a.

[0169] It can be understood that the cooking utensil 1 further includes a control device (not shown) for realizing the cooking control of the cooking utensil 1. The control device can be, for example, a micro control unit (MCU), which coordinates the orderly operation of various components of the cooking utensil 1. For example, the temperature measuring assembly 29 and the heating assembly 15 are electrically connected to the control device, the temperature measuring assembly 29 feeds back signals to the control device, and the control device processes the signals from the temperature measuring assembly 29 to control the orderly operation of the heating assembly 15. The control device and the electric components in the cover 20 are electrically connected to the circuit board assembly 21b, so that the control device controls the electric components in the cover 20 through the circuit board assembly 21b.

[0170] The cover 20 is further provided with a gas path integration device 24. When the cover 20 covers the pot body 10, the gas path integration device 24 communicates with the cooking cavity 10a, and is used to realize the functions of steam exhaust and the like. 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 the passage to release the excess steam, so as to prevent safety accidents such as explosion.

[0171] The cooking process of the cooking utensil 1 includes, for example, a preheating process, a water absorption process, a boiling process, a boiling maintenance process, a rice braising process and a temperature maintaining process. The preheating process is used to preliminarily heat the food. In the water absorption process, the food is fully water absorbed to improve the taste. In the boiling process, the food is heated to a temperature close to boiling by using a large fire, and then boiled in the boiling maintenance process to make the food basically cooked. The rice braising process dries the residual free water to further cook the food. Finally, the temperature maintaining process is used to maintain the temperature, so that the user can eat hot food.

[0172] 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 to fully absorb water. In the temperature maintaining process, negative pressure is also drawn in the cooking cavity 10a, 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 to be quickly cooked.

[0173] In order to realize the above functions, the cover 20 is further provided with a gas pump (not shown), a blowing passage 20a and a gas suction passage (not shown). When the cover 20 covers the pot body 10, the blowing passage 20a and the gas suction passage both communicate with the cooking cavity 10a. The gas flow outlet of the gas pump is connected to the blowing passage 20a, and the external ambient cold air can be blown into the cooking cavity 10a through the blowing passage 20a, which plays a role in preventing the pot from overflowing. The gas flow inlet of the gas pump is connected to the gas suction passage, and the cooking cavity 10a can be drawn into negative pressure through the gas suction passage, so as to realize the water absorption of the food in the negative pressure and the preservation of the food in the negative pressure. It can be understood that the gas pump works under the control of the control device. The gas paths for discharging steam, blowing cold air and drawing negative pressure of the cooking cavity 10a are integrated in the gas path integration device 24, and the opening and closing of different gas paths are controlled by a plurality of valves in the gas path integration device 24, so as to realize the orderly work.

[0174] The cover 20 is provided with a pressure relief passage which communicates with the environment. When the cover 20 covers the pot body 10, the pressure relief passage communicates with the cooking cavity 10a, so that the cooking cavity 10a communicates with the environment, and the air pressure in the cooking utensil 1 is the same as that in the environment. Please refer to Figure 2 and Figure 4The cover 20 has a pressure relief port 20b arranged on the pressure relief channel, the pressure relief channel being blocked when the pressure relief port 20b is closed and being open when the pressure relief port 20b is opened, so that the pressure relief port 20b is used to communicate the environment and the cooking cavity 10a.

[0175] Further, the cooking appliance 1 further comprises a pressure relief assembly 27 and a cover opening pressure relief mechanism 17. Specifically, the pressure relief assembly 27 is arranged on the cover 20, and the pressure relief assembly 27 is movable relative to the cover 20 along a first direction D1 between a first closed position in which the pressure relief port 20b is closed and a first pressure relief position in which the pressure relief port 20b is opened. The cover opening pressure relief mechanism 17 is arranged on the cover 20 and connected to the pressure relief assembly 27. At least part of the cover opening pressure relief mechanism 17 is movable relative to the cover 20 along a second direction D2 between a second closed position and a second pressure relief position. It should be noted that when the at least part of the cover opening pressure relief mechanism 17 is located in the second closed position, the pressure relief assembly 27 is located in the first closed position, and when the at least part of the cover opening pressure relief mechanism 17 is located in the second pressure relief position, the pressure relief assembly 27 is located in the first pressure relief position. 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.

[0176] The cooking appliance 1 further comprises a cover opening assembly 14, which is arranged on the pot body 10 for example. In the case that the cover 20 covers the pot body 10, the cover opening assembly 14 is used to act on the cover opening pressure relief mechanism 17 under the operation of a user, so as to make the at least part of the cover opening pressure relief mechanism 17 located in the second pressure relief position, and make the cover 20 open. Moreover, the pressure relief assembly 27 comprises a guide surface which is inclined relative to the first direction D1 and the second direction D2, and is used to contact the at least part of the cover opening pressure relief mechanism 17.

[0177] According to the cooking appliance 1 of the present application, the cover opening assembly 14 controls the pressure relief assembly 27 to open the pressure relief port 20b to achieve pressure relief while realizing cover opening, so as to solve the technical problem of difficult cover opening of the existing cooking appliance with negative pressure, and the operation is convenient.

[0178] The cover opening pressure relief mechanism 17 comprises a cover closing component 23 and a transmission assembly 25. The cover opening assembly 14 acts on the cover closing component 23 and the transmission assembly 25 respectively, so as to realize cover opening and closing and pressure relief.

[0179] The cover opening assembly 14 is used to be connected to the cover closing component 23, so as to make the cover 20 open and close the pot body 10. Please refer to Figures 3 to 5The lid opening assembly 14 is movable between an initial position and an active position relative to the pot body 10, for example. When the lid body 20 is closed on the pot body 10, the lid opening assembly 14 is used to move from the initial position to the active position under the operation of a user, to be disconnected from the lid closing member 23, so that the lid body 20 is opened. When the user closes the lid body 20, the lid opening assembly 14 can be automatically connected with the lid closing member 23, and then automatically located at the initial position. Alternatively, when the lid body 20 is closed on the pot body 10, the lid opening assembly 14 is connected with the lid closing member 23 when the lid opening assembly 14 is located at the initial position. When the lid body 20 is closed on the pot body 10, the lid opening assembly 14 also causes the at least part of the lid opening pressure relief mechanism 17 to be located at the second closed position when the lid opening assembly 14 is located at the initial position. When the lid body 20 is closed on the pot body 10, the transmission assembly 25 is used to connect the lid opening assembly 14 and the pressure relief assembly 27. Please refer to Figure 2 and Figures 4 to 8 Further, the transmission assembly 25 has a first state (as shown in Figure 2 , Figure 4 and 5 ) and a second state (as shown in Figures 6 to 8 ), the transmission assembly 25 in the first state causes the pressure relief assembly 27 to close the pressure relief port 20b, and the transmission assembly 25 in the second state causes the pressure relief assembly 27 to open the pressure relief port 20b.

[0180] When the lid body 20 is closed on the pot body 10, the lid opening assembly 14 is connected with the lid closing member 23 and causes the transmission assembly 25 to be in the first state when the lid opening assembly 14 is located at the initial position. When the lid body 20 is closed on the pot body 10, the lid opening assembly 14 causes the transmission assembly 25 to be in the second state when the lid opening assembly 14 is located at the active position. That is, when the user operates the lid opening assembly 14, the lid can be opened, and at the same time the pressure relief port 20b is opened, when the lid body 20 is closed on the pot body 10. 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 the lid is opened, so that the lid body 20 can be opened.

[0181] The lid body 20 is also provided with a first elastic member 26 connected to the transmission assembly 25 to cause the transmission assembly 25 to change from the second state to the first state, and the first elastic member 26 can be configured as a first spring. Thus, after the negative pressure is released, the pressure relief assembly 27 is closed again under the action of the first elastic member 26, so that the air pump can again draw negative pressure for the cooking cavity 10a. The action mode of the first elastic member 26 on the transmission assembly 25 will be described below.

[0182] It should be noted that none of the cover closing component 23, the cover opening assembly 14, the pressure relief assembly 27 and the transmission assembly 25 contains electrically controlled components, and the components are connected purely mechanically, which improves the safety and reliability of the cooking appliance 1 and reduces the production cost.

[0183] Please refer to Figure 5 、 Figure 8 and Figure 9 , in particular, the transmission assembly 25 includes a slide rod 25e. The slide rod 25e extends along the second direction D2. The slide rod 25e is movable relative to the cover body 20 along the second direction D2 between a second closing position and a second pressure relief position, and the slide rod 25e is used to act on the pressure relief assembly 27 to move the pressure relief assembly 27 along the first direction D1. When the slide rod 25e is located at the second closing position, the pressure relief assembly 27 is located at the first closing position; when the slide rod 25e is located at the second pressure relief position, the pressure relief assembly 27 is located at the first pressure relief position.

[0184] In particular, the slide rod 25e is movable relative to the cover body 20 along the second direction D2 between the second closing position and the second pressure relief position. Please refer to Figure 2 、 Figure 4 and Figure 5 , when the transmission assembly 25 is in the first state, the slide rod 25e is located at the second closing position. Please refer to Figures 6 to 8 , when the transmission assembly 25 is in the second state, the slide rod 25e is located at the second pressure relief position. In other words, when the slide rod 25e is located at the second closing position, the pressure relief opening 20b is closed, and when the slide rod 25e is located at the second pressure relief position, the pressure relief opening 20b is opened. Please refer to Figure 7 and Figure 9 , the slide rod 25e includes a slide rod first end 25p and a slide rod second end 25q arranged in opposite directions along the second direction D2. The slide rod first end 25p is used to connect the cover opening assembly 14, and the slide rod second end 25q is used to contact the pressure relief assembly 27. How the slide rod 25e moves along the second direction D2 will be described later.

[0185] Please refer back to Figure 5 and Figure 8 , in particular, the pressure relief assembly 27 is movable relative to the cover body 20 along the first direction D1 between the first closing position and the first pressure relief position. When the pressure relief assembly 27 is located at the first closing position, the pressure relief assembly 27 closes the pressure relief opening 20b (see Figure 5 ), and when the pressure relief assembly 27 is located at the first pressure relief position, the pressure relief assembly 27 opens the pressure relief opening 20b (see Figure 8). The pressure relief assembly 27 is movable from the first pressure relief position to the first closed position under the action of the slide rod 25e. It is to be noted that the cover body 20 is further provided with a biasing member 33 for acting on the pressure relief assembly 27 to move the pressure relief assembly 27 from the first closed position to the first pressure relief position when the transmission assembly 25 is in the second state (i.e. the slide rod 25e is located at the second pressure relief position). Thus, after the user operates the cover opening assembly 14 to the active position, the pressure relief assembly 27 is opened under the action of the biasing member 33 to open the pressure relief port 20b, achieving the purpose of opening the cover while opening the pressure relief port 20b to release pressure. The biasing member 33 can be configured as a third spring. Alternatively, the biasing member 33 can also be configured as a magnetic member suitable for the pressure relief assembly 27, so that the pressure relief assembly 27 is moved from the first closed position to the first pressure relief position by magnetic force when the transmission assembly 25 is in the second state.

[0186] The specific structure of the pressure relief assembly 27 will be described below.

[0187] Please continue to refer to Figure 5 and Figure 8 , further, the pressure relief assembly 27 includes a push rod member 27m and a pressure relief sealing member 27b. The push rod member 27m extends along the first direction D1 and is configured to be movable along the first direction D1 between the first closed position and the first pressure relief position. The first end (e.g. the upper end in the figure) of the push rod member 27m abuts against the slide rod 25e to be moved from the first pressure relief position to the first closed position under the action of the slide rod 25e. It is to be noted that the aforementioned guide surface is provided at the first end of the push rod member 27m. The pressure relief sealing member 27b is connected to the second end (e.g. the lower end in the figure) of the push rod member 27m for opening and closing the pressure relief port 20b. When the push rod member 27m is located at the first closed position, the pressure relief sealing member 27b closes the pressure relief port 20b, and when the push rod member 27m is located at the first pressure relief position, the pressure relief sealing member 27b opens the pressure relief port. The biasing member 33 is used to act on the push rod member 27m to move the push rod member 27m from the first closed position to the first pressure relief position when the transmission assembly 25 is in the second state.

[0188] Specifically, please refer to Figure 5 , Figure 8 and Figure 9The second end 25q of the slide rod is specifically configured to contact the push rod member 27m. The second end 25q of the slide rod is provided with a slide rod through hole 25h. When the pressure relief assembly 27 is in the first pressure relief position, the first end of the push rod member 27m is located in the slide rod through hole 25h, so that the slide rod 25e and the push rod member 27m are always in contact, which is conducive to closing the pressure relief port 20b next time. The outer peripheral surface 27h of the first end of the push rod member 27m is configured in the shape of a side surface of a cone or a circular truncated cone to form the aforementioned guide surface. In the illustrated embodiment, the inner peripheral surface 25f of the slide rod through hole 25h is also configured in the shape of a side surface of a circular truncated cone to be mutually matched with the outer peripheral surface 27h of the push rod member 27m.

[0189] For further understanding Figure 5 and Figure 8 The cover 20 is provided with a mounting through hole 20d. The mounting through hole 20d and the pressure relief port 20b are both in the first direction D1, and the mounting through hole 20d is spaced apart from the pressure relief port 20b along the first direction D1. The pressure relief seal 27b is connected to the mounting through hole 20d.

[0190] For further understanding Figure 8 and Figure 9 The pressure relief seal 27b includes a pressure relief seal intermediate portion 27d and a pressure relief seal peripheral portion 27c connected in sequence from inside to outside along 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 27d is movable relative to the pressure relief seal peripheral portion 27c along the first direction D1. Specifically, the pressure relief seal peripheral portion 27c is connected to the peripheral portion of the mounting through hole 20d, and the side of the pressure relief seal intermediate portion 27d away from the pressure relief port 20b is connected to the second end of the push rod member 27m. The side of the pressure relief seal intermediate portion 27d 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 member 27m is used to pass through the mounting through hole 20d and is connected to the pressure relief seal intermediate portion 27d.

[0191] For example, the pressure relief seal intermediate portion 27d includes a pleat structure 27e extending along the radial direction and concave-convex in the axial direction, so that the pressure relief seal intermediate portion 27d can move relative to the pressure relief seal peripheral portion 27c. This is because the pleat structure 27e is formed by folding the material, so that the material can be stretched or stacked to achieve relative movement. When the transmission assembly 25 drives the pressure relief assembly 27 to move, the presence of the pleat structure 27e causes the pressure relief seal intermediate portion 27d to move relative to the pressure relief seal peripheral portion 27c, that is, the pressure relief seal intermediate portion 27d moves relative to the pressure relief port 20b, thereby moving away from the position of closing the pressure relief port 20b, so that the pressure relief port 20b is opened.

[0192] In addition, in order to better seal the pressure relief port 20b, the pressure relief seal 27 comprises a sealing portion 27f. The sealing portion 27f is arranged on the side of the pressure relief seal intermediate portion 27d facing the pressure relief port 20b. The sealing portion 27f is configured in the shape of a side surface of a circular truncated cone, or in other words, the sealing portion 27f is configured in the shape of a horn with an opening facing the pressure relief port 20b. In this case, the radial dimension of the side of the sealing portion 27f closer to the pressure relief port 20b is greater than the radial dimension of the side of the sealing portion 27f farther from the pressure relief port 20b.

[0193] In order to facilitate the disassembly, maintenance and replacement of the pressure relief seal 27b, the pressure relief seal 27b is configured to be detachable with respect to the push rod member 27m and the mounting through hole 20d. Specifically, the pressure relief seal intermediate portion 27d is detachably sleeved on the outer periphery of the second end of the push rod member 27m. Preferably, as shown in Figure 8 and Figure 9 , one of the push rod member 27m and the pressure relief seal intermediate portion 27d is provided with a receiving groove 32b extending in the circumferential direction, and the groove opening and the groove bottom of the receiving groove 32b are opposite in the radial direction. The other of the push rod member 27m and the pressure relief seal intermediate portion 27d is provided with a flange 32a extending in the circumferential direction, and the flange 32a protrudes in the radial direction and is received in the receiving groove 32b. The push rod member 27m and the pressure relief seal intermediate portion 27d can also be provided with the flange 32a and the receiving groove 32b at the same time, and the receiving groove 32b of the push rod 27a receives the flange 32a of the pressure relief seal intermediate portion 27d, and at the same time, the receiving groove 32b of the pressure relief seal intermediate portion 27d also receives the flange 32a of the push rod member 27m.

[0194] Please continue to refer to Figure 8 and Figure 9 For the mounting connection of the pressure relief seal 27b and the mounting through hole 20d, the cooking utensil 1 is also provided with a pressing ring 28, which contacts the pressure relief seal outer peripheral portion 27c, so that the pressure relief seal outer peripheral portion 27c is clamped between the mouth periphery of the mounting through hole 20d and the pressing ring 28, and the push rod member 27m 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 portion 27c to the mouth periphery 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 portion 27c is located on the side of the mounting through hole 20d away from the pressure relief port 20b. Please refer to Figure 9 and Figure 10 , the pressing ring 28 is provided with a pressing ring sliding groove 28a extending in the second direction D2, and the sliding rod 25e is received in the pressing ring sliding groove 28a and is movable in the second direction D2 in the pressing ring sliding groove 28a.

[0195] Please refer to Figure 8In order to improve the mounting accuracy of the pressure relief seal 27b and the mounting through hole 20d, the pressure relief seal outer peripheral portion 27c and the mouth peripheral portion of the mounting through hole 20d further have 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 arranged on one of the side of the pressure relief seal outer peripheral portion 27c 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 arranged on the other of the side of the pressure relief seal outer peripheral portion 27c 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 27c, and the groove 31b is located on the mouth peripheral portion of the mounting through hole 20d.

[0196] The first end of the push rod member 27m has a first acting surface 27n extending in the radial direction, Figure 8 In the embodiment, the biasing member 33 is configured as a third spring extending in the first direction D1. The third spring is sleeved on the outer periphery of the push rod member 27m and is located between the pressure ring 28 and the first acting surface 27n, specifically, between the mounting through hole 20d and the first acting surface 27n. It should be noted that in the case that the transmission assembly 25 is in the second state, the third spring can drive the push rod member 27m to move the pressure relief seal 27b from the first closed position to the first pressure relief position, so as to open the pressure relief port 20b.

[0197] Please continue to refer to Figure 8 and Figure 9 Specifically, the push rod member 27m includes a push rod 27a and a push rod connecting cap 27g. The first end of the push rod 27a corresponds to the first end of the push rod member 27m described above, the second end of the push rod 27a corresponds to the second end of the push rod member 27m described above, and the pressure relief seal 27b is connected to the second end of the push rod 27a. The push rod connecting cap 27g is connected to the first end of the push rod 27a. The radial dimension of the push rod connecting cap 27g is greater than the radial dimension of the push rod 27a, and the push rod connecting cap 27g includes the first acting surface 27n, which is located on the outer periphery of the first end of the push rod 27a.

[0198] For example, the push rod connecting cap 27g has a first positioning groove 27j and a second positioning groove 27k extending in the first direction D1. The first positioning groove 27j is located at the central position of the push rod connecting cap 27g, and the second positioning groove 27k is an annular groove surrounding the outer periphery of the first positioning groove 27j. The groove opening of the first positioning groove 27j and the groove opening of the second positioning groove 27k face the second end of the push rod 27a. The first end of the push rod 27a is located in and connected to the first positioning groove 27j, the second positioning groove 27k is used to accommodate the biasing member 33, and the groove bottom of the second positioning groove 27k includes the first acting surface 27n. Please refer to Figure 8 andFigure 9 The first end of the push rod 27a can be configured to be detachably connected to the push rod connecting cap 27g. For example, the first end of the push rod 27a is provided with a thread structure matching the thread structure of the first positioning slot 27j.

[0199] The specific structure and working principle of the transmission assembly 25, i.e., how to move the slide rod 25e in the second direction D2, are described below.

[0200] Referring to Figure 8 and Figure 9 , the cover 20 is further provided with a second elastic member 37, which can be configured as a second spring extending in the second direction D2. The second elastic member 37 is connected to the slide rod 25e for moving the slide rod 25e from the second closed position to the second pressure relief position. When the slide rod 25e is in the second pressure relief position, the pressure relief assembly 27 can open the pressure relief opening 20b. The cover 20 is further provided with a guide 38, one end of the second elastic member 37 being connected to the slide rod 25e and the other end of the second elastic member 37 being connected to the guide 38. In the illustrated embodiment, the guide 38 is closer to the first end 25p of the slide rod, and the second spring is a tension spring. For example, in the illustrated embodiment, the left end of the second spring is mounted on the guide 38, so that the position remains unchanged, and the right end of the second spring is mounted on the slide rod 25e, so that it moves left and right with the slide rod 25e.

[0201] Further, the guide 38 includes a guide sliding groove 38a extending in the second direction D2, and the slide rod 25e is accommodated in the guide sliding groove 38a and is movable in the second direction D2 in the guide sliding groove 38a. Thus, the guide 38 not only provides a support point for the second spring, but also guides the movement of the slide rod 25e. The slide rod 25e is further provided with a slide rod slot 25j extending in the second direction D2, and the second elastic member 37 is accommodated in the slide rod slot 25j, one end of the second elastic member 37 being connected to the slide rod slot 25j, so that the second elastic member can apply a force to the slide rod 25e.

[0202] Referring to Figures 9 to 11 , the transmission assembly 25 further includes a transmission member 25a movable relative to the cover 20 in the first direction D1. The first end 25s of the transmission member 25a is used to contact the slide rod 25e, so that the transmission member 25a moves the slide rod 25e from the second pressure relief position to the second closed position. The second end 25t of the transmission member 25a is used to connect the cover opening assembly 14, so that the transmission member 25a is driven by the cover opening assembly to be able to act on the slide rod 25e. At least one of the end of the slide rod 25e for contacting the transmission member 25a and the first end 25s of the transmission member 25a has an additional guide surface inclined relative to the first direction D1 and the second direction D2. For exampleFigure 9 In particular, the first end 25s of the transmission member 25a is provided with a first additional guide surface 25d, and the first end 25p of the slide rod 25e for contacting the transmission member 25a is provided with a second additional guide surface 25k, so that the transmission between the transmission member 25a and the slide rod 25e is smoother.

[0203] The following describes how the transmission assembly 25 changes from the second state to the first state.

[0204] Further, the cover 20 is further provided with a pressing plate 36, and the transmission member 25a is movably connected to the pressing plate 36 in the first direction D1. The first elastic member 26 is arranged between the pressing plate 36 and the transmission member 25a. The first elastic member 26 is, for example, configured as a spring extending in the first direction D1. The transmission member 25a has a mounting groove 25g accommodating the first elastic member 26, so that the transmission member 25a and the pressing plate 36 always keep position correspondence during movement. The side of the pressing plate 36 facing the transmission member 25a is provided with a guide column 36a extending in the first direction D1. The transmission member 25a can be provided with a guide hole 25m, the guide column 36a extends through the guide hole 25m and is movable in the first direction D1 in the guide hole 25m. The end of the guide column 36a is connected to a limiting portion 36b, the radial dimension of the limiting portion 36b is greater than the hole diameter of the guide hole 25m, and the limiting portion 36b is located on the side of the guide hole 25m away from the pressing plate 36, so that the pressing plate 36 cannot be separated from the transmission member 25a.

[0205] The transmission member 25a, for example, includes a top rod 25b and a fitting portion 25c connected to each other, and the top rod 25b extends in the first direction D1. The fitting portion 25c includes the first end 25s of the transmission member 25a. The top rod 25b includes the second end 25t of the transmission member 25a.

[0206] The first direction D1 is, for example, configured as a vertical direction, that is, the axial direction of the mounting through hole 20d and the pressure relief port 20b is a vertical direction, and the pressure relief assembly 27 is located above the pressure relief port 20b. The second direction D2 is, for example, a third horizontal direction. In the case where the first direction D1 is configured as a vertical direction, the pressing plate 36 is located above the transmission member 25a, and the fitting portion 25c is located above and connected to the top rod 25b. Refer back to Figure 4 and Figure 7 The inside of the cover 20 further includes a slide groove 20c extending in the vertical direction, and the top rod 25b is arranged in the slide groove 20c. It can be understood that the radial dimension of the fitting portion 25c is greater than the inner diameter of the slide groove 20c, and the fitting portion 25c is located above the slide groove 20c, and the lower end of the top rod 25b is the second end of the transmission member 25a.

[0207] The following describes how the cover opening assembly 14 acts on the transmission assembly 25.

[0208] Please refer toFigure 2 and Figure 6 The opening and closing assembly 14 can include an operating member 14a and a connecting member 14b. The operating member 14a is configured to be operated by a user, and is movably connected to the pot body 10 between an initial position and an active position in the first horizontal direction. The connecting member 14b is pivotably connected to the pot body 10 about an axis extending in the second horizontal direction. Preferably, the second horizontal direction is perpendicular to the first horizontal direction. 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 configured to connect to the second end 25t of the transmission member 25a, e.g. the lower end of the top rod 25b. It is noted that when the operating member 14a is in the initial position, the connecting member 14b is connected to the closing member 23 when the lid body 20 is closed to the pot body 10, and when the operating member 14a is in the active position, the connecting member 14b is separated from the closing member 23. Thus, the connecting member 14b is a pivotal member for coordinating the opening and closing of the lid body 20 and the pressure relief opening 20b.

[0209] The operating member 14a is exposed to the outer shell 12, and can be configured as an opening button. The connecting member 14b and the closing member 23 can be configured as a cooperating hook. It is contemplated that the operating member 14a is capable of returning to the initial position autonomously after the pressing force is removed, and thus the pot body 10 is further provided with a third elastic member (not shown) between the operating member 14a and the middle plate 13. The third elastic member is configured to drive the operating member 14a to return from the active position to the initial position.

[0210] In addition, in order to make the transmission between the transmission member 25a and the connecting member 14b more smooth, at least one of the second end 25t of the transmission member 25a and the end (e.g. the upper end) of the connecting member 14b configured to contact the transmission member 25a includes a transmission surface 14c, which is inclined with respect to both the vertical direction and the first horizontal direction. For example, the connecting member 14b has a transmission surface 14c, which is inclined with respect to both the vertical direction and the first horizontal direction. Preferably, the transmission surface 14c and the structure of the connecting member 14b configured to connect to the closing member 23 are both provided at the same end (e.g. the 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 of the connecting member 14b, e.g. opposite sides, 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. the hook) is located at the side of the connecting member 14b facing inward.

[0211] Preferably, the first direction D1 is configured as a vertical direction, the second direction D2 is configured as a third horizontal direction, and the third horizontal direction can be configured as the same as the aforementioned first horizontal direction. Generally, the cooking utensil 1 can have a substantially mirror-symmetrical shape. The moving direction of the operating member 14a relative to the pot body 10 is consistent with the extending direction of the slide rod 25e, which is beneficial to simultaneously arranging the operating member 14a and the slide rod 25e on the symmetry plane of the cooking utensil 1, so that the pressure relief assembly 27 and the pressure relief opening 20b are also located on the symmetry plane, which is beneficial to symmetrically loading the cover body 20.

[0212] In the illustrated embodiment, when the cover is opened, the user pushes the operating member 14a to the right in the drawing to the action position. This makes the transmission assembly 25 change to the second state. Specifically, the upper end of the connecting member 14b is deflected to the left, which lifts the transmission member 25a upward, and at the same time, the first elastic member 26 is compressed. In turn, since the transmission member 25a does not apply force to the slide rod 25e, the second elastic member 37 is contracted, so that the slide rod 25e moves to the left to the second pressure relief position. When the slide rod through hole 25h of the slide rod 25e moves above the pressure relief assembly 27, the pressure applied by the slide rod 25e to the pressure relief assembly 27 disappears, the biasing member 33 is stretched, so that the pressure relief assembly 27 moves upward to open the pressure relief opening 20b.

[0213] When the user removes the force applied to the operating member 14a, the cover opening assembly 14 returns to the initial position under the action of the third elastic member, or the cover body 20 has been opened, so that the connecting member 14b no longer applies force to the transmission member 25a. At this time, the first elastic member 26 changes the transmission assembly 25 from the second state to the first state. Specifically, the first elastic member 26 is stretched, so that the transmission member 25a moves downward. In turn, the transmission member 25a moves the slide rod 25e to the right to the second closed position, and at the same time, the second elastic member 37 is stretched. The slide rod 25e presses the pressure relief assembly 27 downward during the movement, so that it closes the pressure relief opening 20b, and at the same time, the biasing member 33 is compressed.

[0214] According to the cooking utensil of the present application, the cover opening assembly triggers the pressure relief assembly to open or close the pressure relief opening to achieve the purpose of pressure relief. Specifically, the cover opening assembly drives the transmission assembly and the pressure relief assembly to link together to achieve pressure relief, which solves the technical problem of difficulty in opening the cover of the existing cooking utensil with negative pressure. Moreover, the transmission assembly adopts a slide rod structure, which can optimize the layout in the cover body, save the internal space of the cover body, and at the same time, can adjust the moving stroke of the pressure relief assembly. In addition, the cover opening assembly, the transmission assembly, and the pressure relief assembly adopt a pure mechanical structure control, which has a lower failure rate and manufacturing cost compared with electronic control, and can be simply realized by manual operation.

[0215] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "setting" appearing in this article can mean that one component is directly attached to another component, or that one component is attached to another component through an intermediate component. Features described in this article in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise stated.

[0216] The present invention has been described through the above embodiments, but it should be understood that the above embodiments are for illustrative and illustrative purposes only and are not intended to limit the present invention to the described embodiments. Those skilled in the art will appreciate that many more variations and modifications may be made based on the teachings of the present invention, and all of these variations and modifications fall within the scope of protection claimed by the present invention.

Claims

1. A cooking utensil, characterized in that: The cooking appliance comprises: A pot body having a cooking cavity for holding and heating food; a cover body, the cover body being 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, the pressure relief assembly being movable relative to the cover body along a first direction between a first closing position closing the pressure relief opening and a first pressure relief position opening the pressure relief opening; a cover-opening pressure relief mechanism, disposed on the cover body and connected to the pressure relief assembly, wherein at least a portion of the cover-opening pressure relief mechanism is movable relative to the cover body along a second direction between a second closed position and a second pressure relief position, wherein when the at least portion of the cover-opening pressure relief mechanism is located in the second closed position, the pressure relief assembly is located in the first closed position, and when the at least portion of the cover-opening pressure relief mechanism is located in the second pressure relief position, the pressure relief assembly is located in the first pressure relief position; and The lid opening assembly is used to act on the lid opening pressure relief mechanism under the operation of the user when the lid body covers the pot body, so that at least a part of the lid opening pressure relief mechanism is located in the second pressure relief position, and the lid body is opened. Wherein, the pressure relief component includes a guide surface inclined relative to both the first direction and the second direction, and is used for contacting at least the portion of the cover opening pressure relief mechanism.

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 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: In the case where the cover body covers the pot body, when the cover opening assembly is located at the initial position, the cover opening assembly is connected to the cover closing component, and at least a part of the cover opening pressure relief mechanism is located at the second closed position.

4. The cooking appliance according to claim 3, wherein: The lid body 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 also includes a transmission assembly. When the lid body covers the pot body, the transmission assembly is used to connect the lid-opening assembly and the pressure relief assembly. The transmission assembly includes a sliding rod. The sliding rod can move between the second closed position and the second pressure relief position along the second direction relative to the lid body to move the pressure relief assembly along the first direction.

6. The cooking appliance according to claim 5, characterized in that: The cover body is further provided with a biasing member, which is used to act on the pressure relief assembly to move the pressure relief assembly from the first closed position to the first pressure relief position when the sliding rod is located at the second pressure relief position.

7. The cooking appliance according to claim 6, characterized in that: The pressure relief assembly comprises: a push rod member extending along the first direction and configured to be movable along the first direction between the first closed position and the first pressure relief position, wherein a first end of the push rod member abuts against the slide bar, and the guide surface is provided at the first end of the push rod member; and a pressure relief seal connected to the second end of the push rod member and used to open and close the pressure relief port; Wherein, the biasing member is used to act on the push rod component.

8. The cooking appliance according to claim 7, wherein: The cover body is provided with a mounting through hole, the axial directions of the mounting through hole and the pressure relief port are both in the first direction, the mounting through hole and the pressure relief port are spaced apart along the first 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, wherein the pressure relief seal middle portion is movable relative to the pressure relief seal outer peripheral portion along the first direction. The outer periphery of the pressure relief seal is connected to the periphery of the mounting hole, the second end of the push rod member is used to pass through the mounting hole and connect 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 includes 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 9, 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 first end of the push rod member has a first action surface extending in the radial direction. The biasing member is configured as a third spring. The third spring is sleeved on the outer periphery of the push rod member and is located between the mouth periphery of the mounting through hole and the first action surface.

14. The cooking appliance according to claim 13, wherein The push rod component comprises: a push rod, a first end of the push rod corresponding to the first end of the push rod member, a second end of the push rod corresponding to the second end of the push rod member, the pressure relief seal being connected to the second end of the push rod; and A push rod connecting cap is connected to the first end of the push rod, the radial dimension of the push rod connecting cap is larger than the radial dimension of the push rod, and the push rod connecting cap includes the first action surface, which is located on the outer periphery of the first end of the push rod.

15. The cooking appliance according to claim 14, wherein The push rod connecting cap has a first positioning groove and a second positioning groove extending along the first direction, the second positioning groove is an annular groove surrounding the outer circumference of the first positioning groove, and the notch of the first positioning groove and the notch of the second positioning groove face the second end of the push rod, The first end of the push rod is located in the first positioning groove and connected to the first positioning groove. The second positioning groove is used to accommodate the biasing member. The bottom of the second positioning groove includes the first acting surface.

16. The cooking appliance according to claim 10, wherein The pressing ring is provided with a pressing ring sliding groove extending along the second direction. The sliding rod is accommodated in the pressing ring sliding groove and is movable in the pressing ring sliding groove along the second direction.

17. 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.

18. 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 dimension on a side away from the pressure relief port.

19. The cooking appliance according to claim 7, wherein The pressure relief seal is detachably sleeved on the outer circumference of the second end of the push rod member.

20. The cooking appliance according to claim 19, wherein A receiving groove extending in the circumferential direction is provided at the second end of the push rod member and one of the pressure relief seal, wherein the groove opening and the groove bottom are opposite to each other in the radial direction; The other of the second end of the push rod member and the pressure relief seal is provided with a flange extending in the circumferential direction, the flange protruding in the radial direction, and the flange is accommodated in the accommodation groove.

21. The cooking appliance according to claim 7, wherein When the slide bar is located at the second closed position, the pressure relief assembly is located at the first closed position; when the slide bar is located at the second pressure relief position, the pressure relief assembly is located at the first pressure relief position. The cover body is further provided with a second elastic member, which is connected to the sliding rod and is used to move the sliding rod from the second closed position to the second pressure relief position.

22. The cooking appliance according to claim 21, wherein The slide bar includes a first end and a second end arranged opposite to each other along the second direction, the first end of the slide bar is used to connect to the cover opening assembly, and the second end of the slide bar is used to contact the push rod component. The second end of the slide rod is provided with a slide rod through hole. When the pressure relief assembly is located at the first pressure relief position, the first end of the push rod member is located in the slide rod through hole.

23. The cooking appliance according to claim 22, wherein The outer peripheral surface of the first end of the push rod member is configured in the shape of a side surface of a cone or a truncated cone to form the guide surface.

24. The cooking appliance according to claim 21, wherein The cover body is also provided with a guide member, one end of the second elastic member is connected to the sliding rod, and the other end of the second elastic member is connected to the guide member, the guide member includes a guide member slide groove, the guide member slide groove extends along the second direction, the sliding rod is accommodated in the guide member slide groove, and is movable in the guide member slide groove along the second direction.

25. The cooking appliance according to claim 24, wherein The slide bar is further provided with a slide bar groove extending along the second direction, the second elastic member is accommodated in the slide bar groove, and the one end of the second elastic member is connected to the slide bar groove.

26. The cooking appliance according to any one of claims 5 to 25, characterized in that The cover body is further provided with a first elastic member connected to the transmission assembly so as to move the sliding rod from the second pressure relief position to the second closed position along the second direction.

27. The cooking appliance according to claim 26, wherein The transmission assembly further comprises: a transmission member, the transmission member being movable relative to the cover body along the first direction, the first end of the transmission member being configured to contact the slide rod, and the second end of the transmission member being configured to connect to the cover opening assembly; Wherein, at least one of the end of the sliding rod for contacting the transmission member and the first end of the transmission member has an additional guide surface, and the additional guide surface is inclined relative to both the first direction and the second direction.

28. The cooking appliance according to claim 27, wherein A pressing plate is further provided in the cover body, the transmission member is movably connected to the pressing plate along the first direction, and the first elastic member is provided between the pressing plate and the transmission member.

29. The cooking appliance according to claim 28, wherein A guide column extending along the first direction is provided on one side of the pressure plate facing the transmission member. The transmission member is provided with a guide hole. The guide column extends through the guide hole and is movable in the guide hole along the first direction.

30. The cooking appliance according to claim 29, wherein The end of the guide column is connected to a limiting portion, the radial dimension of the limiting portion is larger than the aperture of the guide hole, and the limiting portion is located on a side of the guide hole facing away from the pressure plate.

31. The cooking appliance according to claim 28, wherein The transmission member has a mounting groove for accommodating the first elastic member.

32. The cooking appliance according to claim 27, wherein The first direction is a vertical direction, and the second direction is a third horizontal direction.

33. The cooking appliance according to claim 32, wherein The transmission member includes a push rod and a matching portion, wherein the push rod extends in a vertical direction, the matching portion is located above the push rod and connected to the push rod, and the matching portion includes a first end of the transmission member; The cover body also has a slide groove extending in the vertical direction. The push rod is arranged in the slide groove. The radial dimension of the matching part is larger than the inner diameter of the slide groove and is located above the slide groove. The lower end of the push rod is the second end of the transmission component.

34. The cooking appliance according to claim 32, wherein The cover opening assembly comprises: an operating member, configured 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 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 being connected to the operating member, and the other end of the connecting member being configured to be connected to the second end of the transmission member; 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.

35. The cooking appliance according to claim 34, wherein At least one of the second end of the transmission member and the other end of the connecting member comprises a transmission surface inclined relative to both the vertical direction and the first horizontal direction; and / or The first horizontal direction is the same as the third horizontal direction.

Images