Cooking utensil

Abstract

The utility model discloses a cooking utensil. The cooking utensil comprises a cooking cavity, an airflow generating device and a reversing valve. The airflow generating device is provided with an airflow inlet and an airflow outlet. The reversing valve comprises a first valve port used for being communicated with the environment, a second valve port communicated with the cooking cavity and a third valve port communicated with the airflow outlet. The reversing valve is configured to enable the third valve port to be communicated with the first valve port and the second valve port. The gas circuit integration device comprises a device shell and a movable partition plate assembly. A device inner cavity is defined by the device shell, and the device shell is provided with a shell opening. The movable partition plate assembly is arranged in the device inner cavity, an exhaust cavity communicated with the cooking cavity is defined by the movable partition plate assembly and part of the device shell, the movable partition plate assembly has a first opening position and a first closing position, and when the movable partition plate assembly is located at the first opening position, the exhaust cavity is communicated with the shell opening hole; and when located at the first closing position, the exhaust cavity is separated from the shell opening.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cooking utensils, in particular to a cooking utensil. BACKGROUND

[0002] In order to improve the cooking effect of the rice cooker and improve the work efficiency, the existing rice cooker increases the function of sucking negative pressure and blowing cold air for the cooking cavity. For example, negative pressure is sucked for the cooking cavity in the food material water absorption stage, so that the food material can more fully absorb water to improve the taste; cold air is blown for the cooking cavity in the food material boiling stage to achieve anti-overflow. In order to realize the above functions, the existing rice cooker has complex design, high cost and high failure rate.

[0003] Therefore, there is a need for a cooking utensil to at least partially solve the above problems. SUMMARY

[0004] A series of simplified concepts are introduced in the summary part, which will be further described in detail in the detailed description part. The summary part of the present application does not mean to try to limit the key features and necessary technical features of the claimed technical solution, nor to try to determine the protection scope of the claimed technical solution.

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

[0006] a cooking cavity for containing food materials;

[0007] an airflow generating device, the airflow generating device having an airflow inlet and an airflow outlet;

[0008] a reversing valve, the reversing valve comprising a first valve port, a second valve port and a third valve port, the first valve port being configured to communicate with the ambient environment, the second valve port being configured to communicate with the cooking cavity, the third valve port being configured to communicate with the airflow outlet, the reversing valve being configured to allow the third valve port to communicate with the first valve port and the second valve port respectively; and

[0009] an air path integration device, the air path integration device comprising:

[0010] a device housing, the device housing enclosing a device inner cavity, the device housing being provided with a housing aperture to allow the device inner cavity to communicate with the ambient environment,

[0011] a movable partition assembly, the movable partition assembly being disposed in the device inner cavity and defining, together with part of the device housing, an air suction and exhaust cavity, the air suction and exhaust cavity being configured to communicate with the cooking cavity, the movable partition assembly having a first open position and a first closed position, and

[0012] an air pipe, the air pipe being configured to communicate the air suction and exhaust cavity with the airflow inlet,

[0013] wherein, when the mobile partition assembly is in the first open position, the exhaust cavity is in communication with the housing aperture; and when the mobile partition assembly is in the first closed position, the exhaust cavity is blocked from the housing aperture.

[0014] According to the present application, when the mobile partition assembly is in the first closed position, the exhaust cavity is not in communication with the environment, so the cooking cavity is not in communication with the environment, the first valve port of the reversing valve is in communication with the third valve port, the air inlet of the airflow generating device is in communication with the cooking cavity, and the air outlet of the airflow generating device is in communication with the environment, so that the cooking cavity can be pumped to a negative pressure when the airflow generating device is working. When the mobile partition assembly is in the first open position, the exhaust cavity is in communication with the environment, so the cooking cavity is in communication with the environment, the air path integration device can be directly used for steam exhaust, and at this time, the first valve port of the reversing valve is in communication with the second valve port, the air inlet of the airflow generating device is in communication with the environment, and the air outlet of the airflow generating device is in communication with the cooking cavity, so that cold air can be blown to the cooking cavity when the airflow generating device is working. The air path structure of the cooking appliance according to the present application is simple, integrates the functions of pumping to a negative pressure, steam exhaust, and blowing cold air, and the steam exhaust and blowing cold air can be performed at the same time, accurately meeting the needs of boiling and preventing spilling.

[0015] Optionally, the mobile partition assembly is configured to move from the first closed position to the first open position under the action of steam pressure in the cooking cavity.

[0016] According to the present application, the opening and closing of the mobile partition assembly is driven by steam, so that the exhaust cavity is opened when it is really necessary to exhaust steam and blow cold air to prevent spilling, and the control is more accurate. Moreover, steam driving does not require components, and the control is simple and has a lower cost.

[0017] Optionally, a mounting through hole is arranged in the device inner cavity, and the mobile partition assembly is arranged through the mounting through hole.

[0018] According to the present application, the mobile partition assembly is simple to install.

[0019] Optionally, the mobile partition assembly is movable relative to the mounting through hole in the axial direction of the mounting through hole between the first open position and the first closed position.

[0020] According to the present application, the mobile partition assembly moves in the axial direction of the mounting through hole to open and close the exhaust cavity.

[0021] Optionally, the mobile partition assembly comprises:

[0022] a telescopic member connected to the periphery of the mounting through hole and telescopic in the axial direction of the mounting through hole between the first open position and the first closed position; and

[0023] The moving partition plate is arranged in the mounting through hole and connected to the telescopic member to move synchronously with the telescopic member between the first open position and the first closed position.

[0024] According to the present application, the moving partition plate assembly has a simple structure.

[0025] Optionally, the telescopic member comprises a telescopic member peripheral part and a telescopic member intermediate part, the telescopic member peripheral part is connected to the telescopic member intermediate part at the periphery of the telescopic member intermediate part, the telescopic member peripheral part is used to connect to the periphery of the mouth of the mounting through hole, and the telescopic member intermediate part is configured to be movable relative to the telescopic member peripheral part along the axial direction between the first open position and the first closed position.

[0026] The moving partition plate is connected to the telescopic member intermediate part.

[0027] According to the present application, the telescopic member is used to be mounted in the mounting position, the moving partition plate is mounted on the telescopic member, the telescopic member intermediate part and the moving partition plate are movable in the mounting through hole, and the moving partition plate assembly has a structure adapted to the mounting through hole.

[0028] Optionally, the moving partition plate assembly further comprises a pressing ring, and the pressing ring is used to press the telescopic member peripheral part to the periphery of the mouth of the mounting through hole.

[0029] According to the present application, the telescopic member is mounted in the mounting position in a simple manner.

[0030] Optionally, the telescopic member is connected to the side of the mounting through hole away from the exhaust cavity.

[0031] According to the present application, the telescopic member is connected to the side of the mounting through hole away from the exhaust cavity, which facilitates the mounting of the telescopic member and is conducive to the moving partition plate having a larger moving stroke and being capable of fully opening the exhaust cavity.

[0032] Optionally, the telescopic member is detachably connected to the moving partition plate.

[0033] According to the present application, the moving partition plate is detachable from the telescopic member, which facilitates cleaning.

[0034] Optionally, the telescopic member is made of an elastic material, and the telescopic member intermediate part comprises a wrinkle structure along the radial direction, and the wrinkle structure is concave-convex along the axial direction.

[0035] According to the present application, the telescopic member is made of an elastic material, and the elastic material is configured as a wrinkle structure, which can be stretched and reset to realize axial movement.

[0036] Optionally, the mobile partition is provided with a partition flange, and the intermediate part of the telescopic member is tightly fitted with the partition flange.

[0037] According to the present application, the connection between the telescopic member and the mobile partition is simple.

[0038] Optionally, the mobile partition comprises:

[0039] a partition connecting part extending along the axial direction, one end of the partition connecting part being used for passing through the mounting through hole and being connected to the intermediate part of the telescopic member; and

[0040] a partition flange plate provided at the outer circumferential side of the partition connecting part and used for contacting the device shell.

[0041] According to the present application, the mobile partition has a simple structure.

[0042] Optionally, the partition flange plate is provided with a reinforcing rib.

[0043] According to the present application, the reinforcing rib can enhance the strength of the mobile partition.

[0044] Optionally, the mouth of the mounting through hole is provided with at least one guide column extending along the axial direction, and the partition flange plate is provided with at least one guide hole corresponding to the guide column and used for accommodating the guide column.

[0045] According to the present application, the cooperation between the guide column and the guide hole enables the mobile partition to stably move in the axial direction.

[0046] Optionally, the mobile partition assembly is connected with a spring, and the spring is used for moving the mobile partition assembly from the first open position to the first closed position; or

[0047] The mobile partition assembly is provided with a first magnet, and the device inner cavity is also provided with a second magnet, the magnetic force between the first magnet and the second magnet is mutually attractive, and the direction of the magnetic force is parallel to the connecting line between the first open position and the first closed position.

[0048] According to the present application, when the steam pressure in the cooking cavity is large, the steam will push the mobile partition assembly away. When the steam pressure in the cooking cavity is small, the mobile partition assembly is reset by the spring force or the magnetic force, without the need for an electric control component, so that the control is simple and the cost is lower.

[0049] Optionally, the bottom wall of the air extraction cavity is provided with an air extraction port and an air exhaust port, the air extraction port is communicated with the air flow inlet, the air exhaust port is communicated with the cooking cavity, and when the mobile partition assembly is located at the first closed position, the mobile partition assembly forms the top wall of at least the air extraction cavity.

[0050] According to the present application, the mobile partition assembly forms a top wall of the exhaust cavity, and when it is in the first open position, a crack is formed around a side wall of the exhaust cavity, and the opening formed by the crack has a large area relative to the exhaust cavity, so that the steam can be quickly released.

[0051] Optionally, the axis of the exhaust port is substantially coincident with the axis of the side wall of the exhaust cavity.

[0052] According to the present application, the axis of the exhaust port is substantially coincident with the axis of the side wall of the exhaust cavity, which is beneficial to the steam in the cooking cavity acting uniformly on the mobile partition assembly.

[0053] Optionally, the bottom wall of the exhaust cavity is further provided with a first blocking piece, the first blocking piece is located between the suction port and the exhaust port, and the first blocking piece protrudes from the bottom wall of the exhaust cavity towards the inside of the exhaust cavity.

[0054] According to the present application, the first blocking piece can divide the exhaust cavity into two parts to a certain extent, and block the flow of hot steam from the exhaust port to the suction port, so that when the first opening is opened, the first blocking piece blocks the flow of hot steam from the exhaust port to the suction port, thereby avoiding the hot steam affecting the cold air blowing to the cooking cavity.

[0055] Optionally, two side edges of the first blocking piece spaced apart in the width direction are connected to the side wall of the exhaust cavity.

[0056] According to the present application, the two side edges of the first blocking piece spaced apart in the width direction are connected to the side wall of the exhaust cavity, which is beneficial to blocking the flow of hot steam from the exhaust port to the suction port.

[0057] Optionally, a middle portion of the first blocking piece in the width direction protrudes from the side wall of the exhaust cavity towards the mobile partition assembly in the axial direction of the side wall of the exhaust cavity.

[0058] The mobile partition assembly comprises a containing groove for containing the middle portion of the first blocking piece.

[0059] According to the present application, the middle portion of the first blocking piece protrudes from the side wall of the exhaust cavity, which is beneficial to blocking the flow of hot steam from the exhaust port to the suction port.

[0060] Optionally, the middle portion of the first blocking piece comprises an arc-shaped plate, and the axis of the arc shape of the arc-shaped plate is substantially coincident with the axis of the side wall of the exhaust cavity.

[0061] According to the present application, the arc-shaped plate can reduce the span of the middle portion of the blocking piece, so that it is easier to be contained in the containing groove of the mobile partition assembly.

[0062] Optionally, the gas path integration device further comprises a ventilation cavity, the ventilation cavity being a part of the device inner cavity, a cavity wall of the ventilation cavity being provided with the shell opening;

[0063] When the mobile partition assembly is in the first open position, the air exhaust cavity is in communication with the ventilation cavity; when the mobile partition assembly is in the first closed position, the air exhaust cavity is blocked from the ventilation cavity.

[0064] According to the present application, the gas path integration device is provided with double cavities, one of which is in communication with the environment, and the other of which is in communication with the cooking cavity and the air inlet, and the switching of the gas path function is realized by controlling the opening and closing of the two cavities.

[0065] Optionally, the ventilation cavity is located at the periphery of the side wall of the air exhaust cavity.

[0066] According to the present application, the ventilation cavity and the air exhaust cavity are simple to realize, and the ventilation cavity and the air exhaust cavity can be formed by one component.

[0067] Optionally, the bottom wall of the air exhaust cavity and the bottom wall of the ventilation cavity extend in the same plane.

[0068] According to the present application, the ventilation cavity and the air exhaust cavity are simple to manufacture and process.

[0069] Optionally, the gas path integration device further comprises a second blocking piece, the second blocking piece being arranged in the ventilation cavity and connected to the cavity wall of the ventilation cavity, the second blocking piece extending along the extension line of the first blocking piece.

[0070] According to the present application, the second blocking piece blocks the hot steam in the ventilation cavity from moving upstream of the air flow generating device, avoiding the hot steam re-entering the air exhaust cavity and being sucked into the air flow generating device.

[0071] Optionally, the reversing valve further comprises:

[0072] a reversing valve housing, the reversing valve housing enclosing a reversing valve inner cavity; and

[0073] a valve core, the valve core being arranged in the reversing valve inner cavity and being movable relative to the reversing valve housing between a first valve core position and a second valve core position,

[0074] wherein, when the valve core is in the first valve core position, the third valve port is in communication with the first valve port; and when the valve core is in the second valve core position, the third valve port is in communication with the second valve port.

[0075] According to the present application, the reversing valve internal air flow passage changing mode is simple.

[0076] Optionally, the cooking utensil further comprises a driving device, the valve core is connected to the driving device and moves relative to the reversing valve housing under the driving of the driving device.

[0077] According to the present application, the valve core movement control is simple.

[0078] Optionally, a temperature-sensing deformation component is further arranged in the reversing valve inner cavity, the temperature-sensing deformation component is connected to the valve core, and the temperature-sensing deformation component deforms when the temperature changes, thereby driving the valve core to move relative to the reversing valve housing.

[0079] Further, the temperature-sensing deformation component is a memory spring or a bimetallic strip.

[0080] According to the present application, the valve core movement is realized through the deformation of the temperature-sensing deformation component, without the need for electric control components, and the control is simple and the cost is lower. In the water absorption stage, the heating power is low, and thus the overall temperature of the cooking utensil is low. When the food material boils, the overall temperature of the cooking utensil is high. The temperature-sensing deformation component is sensitive to the temperature and controls the switching of the gas circuit, which meets the needs of low-temperature negative pressure extraction and high-temperature steam discharge to prevent spilling, and the control is more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0081] The following drawings for the present application are hereby incorporated into the present application as part of the present application for the purpose of understanding the present application. The drawings in the present application show representative embodiments of the present application and are used to explain the principles of the present application, but are not limiting to the present application.

[0082] In the drawings:

[0083] Figure 1 is a perspective view of a part of a cooking utensil according to the specific embodiment of the present application;

[0084] Figure 2 is Figure 1 is a top view of a part of the cooking utensil shown;

[0085] Figure 3 is Figure 1 is a side view of a part of the cooking utensil shown;

[0086] Figure 4 is a schematic view of a first example of a gas circuit structure of a cooking utensil according to the specific embodiment of the present application, wherein the gas circuit structure is in a state of extracting negative pressure for a cooking cavity;

[0087] Figure 5 is a schematic view of a first example of a gas circuit structure of a cooking utensil according to the specific embodiment of the present application, wherein the gas circuit structure is in a state of discharging steam and blowing cold air for a cooking cavity;

[0088] Figure 6is a schematic diagram of a second example of the gas circuit structure of a cooking appliance according to a specific embodiment of the present application, wherein the gas circuit structure is in a state of pumping negative pressure into the cooking cavity;

[0089] Figure 7 is a schematic diagram of a second example of the gas path structure of a cooking appliance according to a specific embodiment of the present application, wherein the gas path structure is in a state of exhausting steam and blowing cold air into the cooking cavity;

[0090] Figure 8 for Figure 1 A three-dimensional schematic diagram of the gas path integration device;

[0091] Figure 9 for Figure 1 A side cross-sectional schematic diagram of a first example of the gas path integration device in FIG, wherein the movable baffle assembly is in a first closed position;

[0092] Figure 10 for Figure 9 A schematic diagram of the three-dimensional structure of section A, wherein the movable partition assembly is located in a first open position;

[0093] Figure 11 for Figure 9 The exploded perspective view of the gas path integration device shown;

[0094] Figure 12 for Figure 11 A three-dimensional schematic diagram of the lower cover of the device;

[0095] Figure 13 for Figure 11 A schematic top view of the lower cover of the device in FIG.

[0096] Figure 14 for Figure 11 A schematic side cross-sectional view of the lower cover of the device;

[0097] Figure 15 for Figure 11 A schematic bottom view of the separator in FIG.

[0098] Figure 16 for Figure 9 A three-dimensional exploded schematic diagram of the movable partition assembly in FIG.

[0099] Figure 17 for Figure 9 A schematic side exploded sectional view of a movable baffle assembly;

[0100] Figure 18 for Figure 1 A side cross-sectional schematic diagram of a second example of the gas path integration device;

[0101] Figure 19 for Figure 1FIG. 3 is a side sectional view of a third example of the air path integration device in the cooking device according to the present application.

[0102] BRIEF DESCRIPTION OF DRAWINGS

[0103] 10: cover 11: gasket

[0104] 11A: gasket receiving groove 12: removable cover

[0105] 13: face cover 14: air flow generating device

[0106] 15: air flow inlet 16: air flow outlet

[0107] 17A: top temperature sensor 17B: bottom temperature sensor

[0108] 18: air outlet passage 19: air inlet passage

[0109] 20: pot body 21: pot liner

[0110] 22: cooking cavity 28: heating device

[0111] 30: air path integration device 31: device upper cover

[0112] 33: partition 33A: air passage hole

[0113] 33B: mounting site 33C: mounting through hole

[0114] 34: device lower cover 34A: lower cover bottom wall

[0115] 34B: lower cover side wall 36: moving baffle assembly

[0116] 38: device housing 39: device inner cavity

[0117] 41: first opening 45: first blocking member

[0118] 46: blocking member side edge 47: blocking member middle portion

[0119] 48: guide post 49: second blocking member

[0120] 55: housing opening 56: exhaust pipe

[0121] 57: air passage pipe 61: telescopic member

[0122] 61A: telescopic member outer peripheral portion 61B: telescopic member middle portion

[0123] 61C: pleated structure 61E: annular protrusion

[0124] 61H: second groove 64: moving baffle

[0125] 64A: partition flange plate 64B: partition connecting portion

[0126] 64C: accommodating groove 64D: guide hole

[0127] 64E: first groove 64H: partition flange

[0128] 65: pressing ring 66: pressing ring connecting portion

[0129] 67: pressing ring 69: reinforcing rib

[0130] 83: air exhaust cavity 83A: air exhaust cavity bottom wall

[0131] 83B: annular wall 83C: air outlet

[0132] 83D: air inlet 83E: steam discharge side

[0133] 83F: cold air communication side 84: air passage cavity

[0134] 84A: air passage cavity bottom wall 87: first cavity

[0135] 88: second cavity 91A: first sealing member

[0136] 92A: first spring 92B: second spring

[0137] 93A: first magnet 93B: second magnet

[0138] 100: cooking utensil 110: gas path structure

[0139] 111: first gas path 113: third gas path

[0140] 114: fourth gas path 120: reversing valve

[0141] 121: first valve port 122: second valve port

[0142] 123: third valve port 125: valve core

[0143] 127: temperature sensing deformation member 128: reversing valve housing

[0144] 129: reversing valve inner cavity 130: driving assembly

[0145] DA: axial direction DR: radial direction

[0146] DL: length direction PA: axis DETAILED DESCRIPTION

[0147] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without one or more of these specific details. In other instances, well-known features have not been described in detail so as not to unnecessarily obscure the present application.

[0148] For a thorough understanding of the present application, reference is made to the following description taken in conjunction with the accompanying drawings. It is apparent that the application can be practiced without one or more of the specific details set forth herein. Certain terminology is used in the description for the purpose of reference only and is not intended to be limiting.

[0149] Numerical terms such as "first" and "second" are used hereinmerely as labels, and are not intended to signify amounts or importance of a particular element. Moreover, terms such as "first" and "second" are not necessarily intended to indicate a location or order of a particular element, one before the other but are also used to distinguish one element from another. The singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise.

[0150] It is to be understood that the terms "above," "below," "upper," "lower," "front," "rear," "inner," "outer," and the like, merely describe the orientation of the components in the figures and are not meant to be limiting.

[0151] In this document, "approximately," "about," and like terms generally refer to a range of values that one of skill in the art would consider equivalent in meaning to the value it modifies in typical applications, but can also include other values that are considered equivalent in the context of the application.

[0152] Unless otherwise indicated, numerical ranges are inclusive of the recited values and include all sub-ranges having the same end values.

[0153] Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings.

[0154] A cooking appliance is provided.

[0155] As Figures 1 to 3As shown, in the first embodiment, the cooking utensil 100 according to the present application can include a pot body 20 and a cover body 10. The pot body 20, for example, includes a pot liner 21. Generally, the pot body 20 can have a cylindrical-shaped (or other shape) receiving cavity, and the pot liner 21 can be freely put into or taken out of the receiving cavity to facilitate cleaning of the pot liner 21. The pot liner 21, for example, is made of a metal material and is configured as a revolution body with an opening and an inner cavity formed by a pot wall. The capacity of the pot liner 21 is generally below 6L, for example, the capacity of the pot liner 21 can be 2L or 4L, etc. The pot liner 21 has a pot liner opening for taking and placing food materials, and an inner space of the pot liner 21 forms a cooking cavity 22 for holding and heating food materials. The cover body 10 can be pivotably connected to the pot body 20 through a pivot shaft for covering the pot body 20.

[0156] The cooking utensil 100 has a heating device 28. The heating device 28 is generally arranged at the bottom of the pot body 20, below the pot liner 21. The heating device 28 is used to heat the pot liner 21 and the food materials therein, thereby realizing the cooking function. The heating device 28, for example, can be configured in the form of a heating disc, an electromagnetic heating coil, etc.

[0157] The cooking utensil 100 has a top temperature sensor 17A, which is generally arranged on the cover body 10 and is used to detect the top temperature of the cooking cavity 22. A bottom temperature sensor 17B is also arranged in the pot body 20 and is used to detect the bottom temperature of the cooking cavity 22. The bottom temperature sensor 17B, for example, is in contact with the bottom wall of the pot liner 21.

[0158] In addition, the cooking utensil 100 also includes a control device (not shown), which is used to realize the cooking control of the cooking utensil 100. The control device, for example, can be a micro control unit (MCU). The control device is electrically connected with the heating device 28 and the temperature sensors, so that the control device can control the heating device 28 to work according to the detection values of the temperature sensors.

[0159] It should be noted that, in the present application, the directional terms "upper" and "lower" are determined based on the cooking utensil 100 which is placed upright and the cover body 10 is in a closed state.

[0160] It should be noted that, although the partial structure of the cooking utensil 100 is described schematically at this time, these enumerations are only exemplary and cannot be regarded as a limitation on the structure of the cooking utensil 100 of the embodiments of the present application.

[0161] As Figure 3As shown, the lid 10 includes, for example, a face cover 13, a backing cover 11 and a detachable cover 12. The backing cover 11 forms a skeleton of the lid 10, and various components (e.g. a top temperature sensor 17A) in the lid 10 are mounted on the backing cover 11. The backing cover 11 is pivotally connected to the pot body 20, for example, so that the lid 10 can be closed on the pot body 20. The face cover 13 forms an outer shell of the lid 10, and is mounted on the backing cover 11. The detachable cover 12 is detachably connected to the backing cover 11, and is located at the bottom of the lid 10. The detachable cover 12 is used to close the pot opening of the inner pot 21.

[0162] The cooking process of the cooking appliance 100 includes, for example, a preheating procedure, a water absorption procedure, a boiling procedure, a boiling maintenance procedure, a rice stewing procedure and a temperature maintenance procedure. The preheating procedure is used to preliminarily heat the foodstuff. In the water absorption procedure, the foodstuff is fully absorbed with water to improve the taste. In the boiling procedure, the foodstuff is heated to a temperature close to boiling with a high fire, and then boiled in the boiling maintenance procedure to substantially cook the foodstuff. In the rice stewing procedure, the residual free water is dried to further cook the foodstuff. Finally, in the temperature maintenance procedure, the foodstuff is kept warm so that the user can eat hot food.

[0163] To improve the cooking quality, generally, the cooking cavity 22 is subjected to a negative pressure in the water absorption procedure, i.e. the air pressure in the cooking cavity 22 is lower than the ambient air pressure, and the negative pressure environment is conducive to the foodstuff fully absorbing water. The cooking cavity 22 is also subjected to a negative pressure in the temperature maintenance procedure, and the negative pressure environment is conducive to food preservation. To improve the cooking efficiency, the cooking cavity 22 is subjected to a cold air blowing in the boiling maintenance procedure, i.e. the ambient air is discharged into the cooking cavity 22, which plays a role in preventing the pot from overflowing. Thus, in the boiling maintenance procedure, the heating device 28 can maintain a relatively high power, which is conducive to the foodstuff being quickly cooked.

[0164] To achieve the above functions, referring back to Figures 4 to 7 The cooking appliance 100 further includes an air flow generating device 14, a reversing valve 120 and an air path integrating device 30. The air flow generating device 14, the reversing valve 120, the air path integrating device 30 and the cooking cavity 22 are organically connected to form an air path structure 110 of the cooking appliance 100, which can realize the discharging of steam, the negative pressure and the cold air blowing of the cooking cavity 22.

[0165] The air flow generating device 14 is a component for promoting the flow of air, for example, a gas pump. The air flow generating device 14 includes an air flow inlet 15 and an air flow outlet 16. When the air flow generating device 14 works, the air flow enters the air flow generating device 14 from the air flow inlet 15, and then is discharged from the air flow generating device 14 from the air flow outlet 16. The air flow generating device 14 is electrically connected to the control device, for example, to work under the control of the control device.

[0166] The reversing valve 120 functions to change the direction of airflow. It includes a reversing valve housing 128 and a valve core 125. The reversing valve housing 128 encloses a reversing valve cavity 129. The reversing valve housing 128 is provided with a first valve port 121, a second valve port 122, and a third valve port 123, all of which are in communication with the reversing valve cavity 129. The first valve port 121 is configured to communicate with the environment, for example, directly opening to the environment. The second valve port 122 communicates with the cooking cavity 22, and the third valve port 123 communicates with the airflow outlet 16. The valve core 125 is disposed within the reversing valve cavity 129 and is movable relative to the reversing valve housing 128. That is, the valve core 125 is movable within the reversing valve cavity 129, allowing the third valve port 123 to communicate with the first valve port 121 and the second valve port 122, respectively, through the reversing valve cavity 129. When the third valve port 123 is communicated with one of the first valve port 121 and the second valve port 122 , the third valve port 123 is isolated from the other one of the first valve port 121 and the second valve port 122 .

[0167] like Figures 8 to 11 As shown, the gas path integration device 30 has a device shell 38, and the device shell 38 surrounds the device inner cavity 39. The device shell 38 can be composed of the outer shells or partial outer shells of multiple components of the gas path integration device 30 in an assembled state. A shell opening 55 is provided on the device shell 38, and the device inner cavity 39 is connected to the external environment through the shell opening 55. A first gas path 111 (see the green arrow air flow path in the figure), a third gas path 113 (see the red arrow air flow path in the figure) and a fourth gas path 114 (see the blue arrow air flow path in the figure) are provided in the device inner cavity 39. Each gas path is also an air flow channel, which can be composed of any structure such as a pipe, a cavity, an opening, etc. that can allow gas to pass through it. In other words, the pipes, cavities, openings, etc. passed by each air flow path are all components of the gas path.

[0168] Specifically, the first gas path 111 is used to connect the cooking cavity 22 and the air flow inlet 15, wherein air flows from the cooking cavity 22 to the air flow inlet 15. The third gas path 113 is used to connect the cooking cavity 22 and the housing opening 55, wherein air flows from the cooking cavity 22 to the housing opening 55. The fourth gas path 114 is used to connect the housing opening 55 and the air flow inlet 15, wherein air flows from the housing opening 55 to the air flow inlet 15.

[0169] Thus, if Figure 4 and Figure 6 As shown, by utilizing the first gas path 111 and connecting the third valve port 123 of the reversing valve to the first valve port 121 , when the airflow generating device 14 is working, negative pressure can be drawn into the cooking cavity 22 . Figure 5 and Figure 7As shown, the gas path integration device 30 can exhaust steam for the cooking cavity 22 by using the third gas path 113. By using the fourth gas path 114, and making the third valve port 123 of the reversing valve 120 communicate with the second valve port 122, cold air can be blown for the cooking cavity 22 when the airflow generating device 14 is working.

[0170] The first gas path 111 and the fourth gas path 114 are upstream gas paths of the airflow generating device 14, and since they are connected with the airflow generating device 14, the airflow direction in them is determined by the airflow generating device 14. The third gas path 113 is not connected with the airflow generating device 14, and the airflow direction in it is determined by the gas pressure at both ends of the gas path. When the food material is boiling, a large amount of hot steam is generated in the cooking cavity 22, and the gas pressure of the steam is higher than the ambient gas pressure, so the airflow flows from the cooking cavity 22 to the housing opening 55.

[0171] As can be seen, the gas path integration device 30 is connected with both the airflow generating device 14 and the cooking cavity 22, or in other words, the device inner cavity 39 communicates with both the airflow generating device 14 and the cooking cavity 22, and the gas path integration device 30 internally integrates the gas paths for extracting negative pressure, exhausting steam, and blowing cold air for the cooking cavity 22. The integrated design reduces the number of components of the cooking appliance 100 and makes assembly easier.

[0172] Preferably, the reversing valve 120, the gas path integration device 30, and the airflow generating device 14 are all arranged in the cover body 10, for example, mounted in the liner cover 11. As shown in Figure 3 The liner cover 11 is provided with a liner cover containing groove 11A for containing the gas path integration device 30. The gas path integration device 30 is detachably mounted in the liner cover containing groove 11A, for example, so as to facilitate user cleaning. It can be understood that the face cover 13 is provided with an opening at a position corresponding to the liner cover containing groove 11A.

[0173] For example, as shown in Figures 3 to 7 The cover body 10 is provided with an air outlet passage 18 and an air inlet passage 19. When the cover body 10 covers the pot body 20, the air outlet passage 18 and the air inlet passage 19 both communicate with the cooking cavity 22. The gas path integration device 30 has an exhaust pipe 56 and a breather pipe 57. The exhaust pipe 56 and the breather pipe 57 both communicate with the device inner cavity 39. When the gas path integration device 30 is mounted to the cover body 10, the exhaust pipe 56 communicates with the air outlet passage 18, so that the device inner cavity 39 communicates with the cooking cavity 22. The breather pipe 57 communicates with the airflow inlet 15. Here, the communication between two components can be that the two components are directly connected, or that the two components are connected through a pipeline such as a conduit, a gas pipe, etc. The port of the pipeline can also be understood as the interface of the component. For example, the interfaces of the cover body 10 and the airflow generating device 14 for connecting with the gas path integration device 30 are both arranged on the bottom wall of the containing groove 11A, and the interfaces of the gas path integration device 30 are all arranged on the lower surface of the device shell 38, so as to facilitate the connection of the gas path structure 110.

[0174] The first air path 111 and the fourth air path 114 are upstream air paths of the air flow generating device 14, and can share the air duct 57, i.e., the air duct 57 is on both the first air path 111 and the fourth air path 114.

[0175] As shown in the drawings, the device inner cavity 39 can include an air exhaust cavity 83 and an air passage cavity 84. The air exhaust cavity 83 and the air passage cavity 84 are adjacent. The housing opening 55 is arranged on the cavity wall of the air passage cavity 84, but not arranged on the cavity wall of the air exhaust cavity 83. Therefore, the air passage cavity 84 is always in communication with the external environment. The air exhaust cavity 83 is in communication with both the air exhaust duct 56 and the air passage duct 57, and thus is always in communication with the cooking cavity 22 and the air flow inlet 15. Figure 9 The structure of the air path integration device 30 on the first air path 111 includes, in sequence along the air flow direction, the air exhaust duct 56, the air exhaust cavity 83, and the air passage duct 57. The structure of the air path integration device 30 on the third air path 113 includes, in sequence along the air flow direction, the air exhaust duct 56, the air exhaust cavity 83, and the air passage cavity 84. The structure of the air path integration device 30 on the fourth air path 114 includes, in sequence along the air flow direction, the air passage cavity 84, the air exhaust cavity 83, and the air passage duct 57.

[0176] The first air path 111, the third air path 113, and the fourth air path 114 share the air exhaust cavity 83. It can be understood that when negative pressure is drawn for the cooking cavity 22, the air exhaust cavity 83 cannot be in communication with the external environment, but only in communication with the cooking cavity 22. When steam is exhausted for the cooking cavity 22, the air exhaust cavity 83 needs to be in communication with the external environment, so that the steam can be discharged to the environment. When cold air is blown for the cooking cavity 22, the air exhaust cavity 83 also needs to be in communication with the external environment, so that the ambient cold air can enter the air flow generating device 14. Therefore, the third air path 113 and the fourth air path 114 also share the air passage cavity 84 which is always in communication with the environment. The air exhaust cavity 83 and the air passage cavity 84 are in communication through the first opening 41, and the air exhaust cavity 83 and the air passage cavity 84 are in communication when the first opening 41 is open. The air exhaust cavity 83 and the air passage cavity 84 are cut off when the first opening 41 is closed.

[0177] The movable partition assembly 36 in the device inner cavity 39 is used to define the air exhaust cavity 83 with a part of the device housing 38. In other words, the movable partition assembly 36 and the device housing 38 respectively provide a part of the cavity wall of the air exhaust cavity 83, and at least one of the movable partition assembly 36 and the device housing 38 is provided with a cavity space for forming the air exhaust cavity 83. For example, the movable partition assembly 36 is movable relative to the device housing 38 (i.e., the device inner cavity 39) between a first open position and a first closed position, and when the movable partition assembly 36 is located at the first open position, the movable partition assembly 36 is away from the part of the device housing 38 and a first opening 41 is formed between the movable partition assembly 36 and the part of the device housing 38 (see FIG. 2). When the movable partition assembly 36 is located at the first closed position, the movable partition assembly 36 is close to the part of the device housing 38, and the first opening 41 is closed.

[0178] Figure 10 ​), that is, relative movement is generated between different parts of the cavity wall of the exhaust cavity 83, so that the cavity wall is split and the split opening is the first opening 41. When the moving baffle assembly 36 is in the first closed position, the moving baffle assembly 36 contacts the part of the device housing 38, and the different parts of the cavity wall of the exhaust cavity 83 are reattached, and the split of the first opening 41 is closed.

[0179] Further, the cooking appliance 100 is configured to close the first opening 41 in the water absorption process and / or the heat preservation process, so that the exhaust cavity 83 is not in communication with the external environment but only in communication with the cooking cavity 22; and open the first opening 41 in the boiling maintenance process, so that the exhaust cavity 83 is in communication with the ventilation cavity 84, and thus the exhaust cavity 83 is in communication with the environment. In other words, the cooking appliance 100 is configured to close the first opening 41 by the moving baffle assembly 36 in the water absorption process and / or the heat preservation process; and open the first opening 41 by the moving baffle assembly 36 in the boiling maintenance process. Both the first gas path 111 and the fourth gas path 114 are located upstream of the airflow generating device 14 and are used to provide gas to the airflow generating device 14. When negative pressure needs to be extracted, it is ensured that the gas entering the airflow generating device 14 is air in the cooking cavity 22; and when cold air needs to be blown, ambient cold air can enter the airflow generating device 14. Thus, the airflow is orderly and directionally guided to achieve the desired effect.

[0180] When the first opening 41 is opened, the third gas path 113 for discharging steam is also simultaneously conducted. Thus, the work of discharging steam and blowing cold air for the cooking cavity 22 can be performed simultaneously. Preferably, the cooking appliance 100 is configured such that the first opening 41 is opened under the action of the steam pressure in the cooking cavity 22, or the moving baffle assembly 36 opens the first opening 41 under the action of the steam pressure in the cooking cavity 22. That is, the moving baffle assembly 36 moves from the first closed position to the first open position under the action of the steam pressure in the cooking cavity 22. Thus, the opening of the first opening 41 does not require the participation of electric control components, and the control is simple and cost-saving. Moreover, when the steam in the cooking cavity 22 can drive the moving baffle assembly 36 to move, it indicates that a large amount of steam has been generated in the cooking cavity 22, for example, in the boiling maintenance process, at this time, the first opening 41 is opened, which can discharge steam and blow cold air, and exactly meets the need of preventing overflow in the boiling maintenance process.

[0181] In the present application, the force of the steam to open the moving baffle assembly 36 to open the first opening 41 is, for example, 0.1 N to 5 N, and preferably 0.2 N to 1 N.

[0182] It can be understood that the control device can determine the temperature in the cooking cavity 22 through the sensing data of the temperature sensor, so as to accurately determine whether to enter the maintaining boiling process. After determining to enter the water absorbing process or the heat preserving process, the communication mode of the reversing valve 120 is adjusted, and then the air flow generating device 14 is controlled to work, so that negative pressure can be drawn for the cooking cavity 22. After determining to enter the maintaining boiling process, the communication mode of the reversing valve 120 is adjusted, and then the air flow generating device 14 is controlled to work, so that cold air can be blown for the cooking cavity 22. Those skilled in the art can adjust the control software and component parameters through experiments, so that the moving baffle assembly 36 is in the position of closing the first opening 41 before the control software confirms to enter the water absorbing process or the heat preserving process; the moving baffle assembly 36 has opened the first opening 41 under the action of steam in the cooking cavity 22 before the control software confirms to enter the maintaining boiling process.

[0183] The specific exemplary structure of the reversing valve 120 will be described below.

[0184] In the reversing valve 120, the valve core 125 is configured to be movable between a first valve core position (see Figure 4 and Figure 6 ) and a second valve core position (see Figure 5 and Figure 7 ) relative to the reversing valve housing 128. Wherein, when the valve core 125 is located at the first valve core position, the third valve port 123 is in communication with the first valve port 121 through the reversing valve inner cavity 129; when the valve core 125 is located at the second valve core position, the third valve port 123 is in communication with the second valve port 122 through the reversing valve inner cavity 129. Preferably, the first valve port 121 and the second valve port 122 are respectively arranged at two ends of the reversing valve housing 128 along the length direction DL, the valve core 125 extends along the length direction DL and is movable along the length direction DL between the first valve core position and the second valve core position, so that two ends of the valve core 125 are respectively used to block the first valve port 121 and the second valve port 122.

[0185] In the embodiments shown in Figure 4 and Figure 5 , the cooking appliance 100 further comprises a driving device 130, the valve core 125 is connected to the driving device 130 and is movable relative to the reversing valve housing 128 under the driving of the driving device 130. The driving device comprises, for example, a motor, a push-pull electromagnet electric control component, etc., the electric control component is electrically connected with the control device, so that the driving device can work under the control of the control device. In this way, the conduction state of the reversing valve 120 can be coordinated with each cooking process through the control software.

[0186] In the embodiments shown in Figure 6 and Figure 7In the illustrated embodiment, a temperature-sensitive deformation component 127 is further arranged in the reversing valve inner cavity 129, and the temperature-sensitive deformation component 127 is connected to the valve core 125. The temperature-sensitive deformation component 127 deforms when the temperature changes, thereby driving the valve core 125 to move relative to the reversing valve housing 128. The temperature-sensitive deformation component 125 is, for example, a memory spring or a bimetallic strip. In such an example, the movement of the valve core 125 is realized through the deformation of the temperature-sensitive deformation component 127, without the need for an electrically controlled component, and the control is simple and the cost is lower. During the water absorption stage, the heating power is low, and thus the overall temperature of the cooking appliance 100 is low. When the food material boils, the overall temperature of the cooking appliance 100 is high. The temperature-sensitive deformation component 127 is sensitive to the temperature, and controls the switching of the gas circuit, which conforms to the characteristics of the switching of the gas circuit at high and low temperatures, meets the needs of low-temperature negative pressure extraction and high-temperature steam discharge to prevent spilling, and the control is more accurate.

[0187] The following describes a specific exemplary structure of the gas circuit integration device 30.

[0188] As shown in Figures 8 to 15 , the gas circuit integration device 30 has a substantially radially symmetric shape, and an axis PA extends, for example, in the up-down direction, that is, the axial direction DA of the gas circuit integration device 30 is the up-down direction. In the projection along the axial direction DA, the device housing 38 is circular with the axis PA as the center.

[0189] The gas circuit integration device 30 includes a device upper cover 31, a partition 33, and a device lower cover 34. The device upper cover 31 and the device lower cover 34 form part of the device housing 38, and together enclose a device inner cavity 39. The device lower cover 34 is below the device upper cover 31 and is configured to face the cooking cavity 22 and contact the bottom wall of the accommodating groove 11A. The exhaust pipe 56 and the air pipe 57 both extend from the lower surface of the device lower cover 34.

[0190] The device upper cover 31 is, for example, generally configured as a top hat. The device lower cover 34 is generally bowl-shaped and includes a lower cover bottom wall 34A and a lower cover side wall 34B. The axial direction of the lower cover side wall 34B is also the axial direction DA. The lower cover bottom wall 34A is connected to the lower end of the lower cover side wall 34B and constitutes the bottom wall of the gas circuit integration device 30, configured to contact the groove bottom of the accommodating groove 11A. The lower cover bottom wall 34A extends along a plane, for example, thereby reducing the processing difficulty. The outer periphery of the upper cover annular wall 31C is above the opening of the upper end of the lower cover side wall 34B.

[0191] The partition 33 is arranged in the device inner cavity 39 to divide the device inner cavity 39 into two cavities, one being a first cavity 87 between the device upper cover 31 and the partition 33, and the other being a second cavity 88 between the device lower cover 34 and the partition 33. The partition 33 is, for example, configured as a disc, and its outer periphery is connected to the inner circumferential surface of the lower cover side wall 34B.

[0192] The device upper cover 31, the device lower cover 34 and the partition 33 can be connected by threads, rotating buckles or the like, which are not limited in the present application.

[0193] The space between the partition 33 and the device lower cover 34 (i.e. the second cavity 88) forms the exhaust cavity 83 and the ventilation cavity 84. Specifically, referring to Figure 12 and Figure 13 , the lower cover bottom wall 34A is provided with an annular wall 83B extending along the axial direction DA, the annular wall 83B is located in the device inner cavity 39, the inner space of the annular wall 83B is used to form at least part of the exhaust cavity 83, and the outer space of the annular wall 83B is used to form the ventilation cavity 84. The middle part of the lower cover bottom wall 34A forms the exhaust cavity bottom wall 83A of the exhaust cavity 83, and the annular wall 83B forms at least part of the exhaust cavity side wall of the exhaust cavity 83. The outer peripheral part of the lower cover bottom wall 34A forms the bottom wall of the ventilation cavity 84, the lower cover side wall 34B forms the side wall of the ventilation cavity 84, and the partition 33 forms the top wall of the ventilation cavity 84.

[0194] The annular wall 83B has two ends oppositely arranged along the axial direction DA, one end of which is connected to the exhaust cavity bottom wall 83A. The annular wall 83B is connected to the junction of the middle part and the outer peripheral part of the lower cover bottom wall 34A. The partition 33 is located above the annular wall 83B. The partition 33 and the lower cover bottom wall 34A are respectively located on both sides of the annular wall 83B along the axial direction DA.

[0195] The movable partition assembly 36 is arranged on the partition 33, and the movable partition assembly 36 and the lower cover bottom wall 34A are respectively located on both sides of the annular wall 83B along the axial direction DA. The movable partition assembly 36 is configured to be movable relative to the annular wall 83B along the axial direction DA between a first open position (see Figure 10 ) and a first closed position (see Figure 9 ). When the movable partition assembly 36 is in the first open position, the movable partition assembly 36 and the end of the annular wall 83B not connected to the exhaust cavity bottom wall 83A form a first opening 41. Thus, the ventilation cavity 84 is located on the periphery of the annular wall 83B and surrounds the first opening 41. When the movable partition assembly 36 is in the first closed position, the movable partition assembly 36 contacts the end of the annular wall 83B not connected to the exhaust cavity bottom wall 83A, forming at least the top wall of the exhaust cavity 83. The first opening 41 can be understood as being formed in the side wall of the exhaust cavity 83, and the opening 41 surrounds the side wall of the exhaust cavity 83. The exhaust cavity 83 can also be understood as a section of airflow passage, and the first opening 41 can be understood as the opening of the section of airflow passage.

[0196] The cavity wall of the air suction and exhaust cavity 83 is provided with an exhaust port 83C connected with the exhaust pipe 56, so that the air suction and exhaust cavity 83 is communicated with the cooking cavity 22. The cavity wall of the air suction and exhaust cavity 83 is provided with an air suction port 83D connected with the air passage pipe 57, so that the air suction and exhaust cavity 83 is communicated with the air inlet 15. The exhaust port 83C and the air suction port 83D are preferably arranged on the same cavity wall of the air suction and exhaust cavity 83, for example, both are arranged on the bottom wall 83A of the air suction and exhaust cavity 83. Therefore, the bottom wall 34A of the upper cover, the air passage pipe 57 and the exhaust pipe 56 can be integrally formed.

[0197] The housing opening 55 is arranged on the device upper cover 31. Referring to Figure 13 , the partition 33 is provided with an air passage hole 33A near the edge. Referring to Figure 7 , the second cavity 88 is communicated with the first cavity 87 through the air passage hole 33A, and then communicated with the environment through the housing opening 55. Referring to Figure 1 When the air path integration device 30 is installed to the cover body 10, the device upper cover 31 is protruded from the upper surface of the cover 13, for example, so as to facilitate the communication between the housing opening 55 and the environment.

[0198] In order to ensure that the air suction and exhaust cavity 83 is not communicated with the air passage cavity 84 in the air suction mode, a first sealing member 91A is arranged between the movable partition assembly 36 and the device housing 38. The first sealing member 91A is a sealing ring, for example, which is arranged on the end of the annular wall 83B (referring to Figure 9 and Figure 10 ).

[0199] The structure and installation mode of the movable partition assembly 36 are introduced below.

[0200] Referring to Figure 10 and 15 , the partition 33 is provided with a mounting position 33B for mounting the movable partition assembly 36, and the mounting position 33B includes a mounting through hole 33C. The movable partition assembly 36 is arranged through the mounting through hole 33C. The mounting through hole 33C is a circular hole, for example. The axial direction of the first opening 41 is parallel to the axial direction of the mounting through hole 33C, and both are the axial direction DA. As shown in Figure 10 , the first opening 41 and the mounting through hole 33C are spaced apart along the axial direction DA. The movable partition assembly 36 is connected to the mounting through hole 33C and movable along the axial direction DA between the first open position and the first closed position relative to the mounting through hole 33C.

[0201] As shown in Figures 10 to 11 and Figures 16 to 17 , the movable partition assembly 36 includes an extension member 61, a movable partition 64 and a pressing ring 65.

[0202] The telescopic member 61 is connected to the periphery of the mounting hole 33C and is retractable in the axial direction DA of the mounting hole 33C between a first open position and a first closed position. The movable partition 64 and a portion of the device housing 38 define an exhaust chamber 83. The movable partition 64 extends through the mounting hole 33C and is connected to the telescopic member 61, moving synchronously with the telescopic member 61 between the first open position and the first closed position. Thus, the first opening 41 is opened and closed by the movement of the movable partition 64.

[0203] The telescopic member 61 has, for example, a radially symmetrical structure and includes a telescopic member outer peripheral portion 61A and a telescopic member middle portion 61B. The telescopic member outer peripheral portion 61A is connected to the telescopic member middle portion 61B at the periphery of the telescopic member middle portion 61B. The telescopic member outer peripheral portion 61A is annular and is used to be connected to the periphery of the mounting through hole 33C. The telescopic member middle portion 61B is configured to extend through the mounting through hole 33C and is movable in the mounting through hole 33C along the axial direction DA relative to the telescopic member outer peripheral portion 61A between a first open position and a first closed position.

[0204] The movable partition 64 is connected to the side of the telescopic middle portion 61B facing the first opening 41 and moves synchronously with the telescopic middle portion 61B between the first open position and the first closed position. In the first embodiment, the movable partition 64 is moved from the first closed position (see Figure 9 ) moves to the first open position (see Figure 10 ), thereby driving the telescopic member middle portion 61B to move from the first closed position to the first open position. Under the action of the floating seal assembly 37, the telescopic member middle portion 61B moves from the first open position to the first closed position, thereby driving the movable partition 64 to move from the first open position to the first closed position.

[0205] The main body of the pressing ring 65 is a pressing ring 67. The pressing ring 67 is configured as a circular ring and matches the shape of the telescopic member outer peripheral portion 61A. It is used to contact the telescopic member outer peripheral portion 61A so that the telescopic member outer peripheral portion 61A is clamped between the pressing ring 67 and the mounting position 33B, that is, the telescopic member outer peripheral portion 61A is pressed against the mouth of the mounting through hole 33C. Thereby, the telescopic member outer peripheral portion 61A is fixed in position, that is, the relative position of the telescopic member outer peripheral portion 61A and the first opening 41 is fixed. The telescopic member outer peripheral portion 61A can move in the axial direction DA in the central through hole of the pressing ring 67. The pressing ring 65 also includes a pressing ring connecting portion 66 for connecting to the mounting position 33B, for example, detachably connecting to the mounting position 33B. For example, the pressing ring connecting portion 66 is arranged on the radially outer side of the inner circumferential surface of the pressing ring 67 and is connected to the mounting position 33B by bolts. The telescopic member 61 is connected to a side of the mounting through hole 33C away from the first opening 41 , thereby facilitating the installation of the pressing ring 65 .

[0206] The elastic member 61 is preferably made of an elastic material. It is appreciated that, since the outer circumferential portion 61A of the elastic member 61 is connected to the periphery of the mounting hole 33C, the elastic member 61 can seal the mounting hole 33C, so as to isolate the switching cavity 82 from the ventilation cavity 84, and also isolate the switching cavity 82 from the exhaust cavity 83. The intermediate portion 61B of the elastic member 61 includes a pleated structure 61C. The pleated structure 61C is configured to extend in the radial direction DR and is concave-convex in the axial direction DA. Due to the use of the elastic material, the pleated structure 61C can be stretched and also can be restored. When the pleated structure 61C is stretched, the intermediate portion 61B of the elastic member 61 moves away from the outer circumferential portion 61A in the axial direction DA, and drives the movable partition 64 to move away from the first opening 41 in the axial direction DA, so as to open the first opening 41. When the pleated structure 61C is restored, the intermediate portion 61B of the elastic member 61 moves toward the outer circumferential portion 61A in the axial direction DA, and drives the movable partition 64 to move toward the first opening 41 in the axial direction DA, so as to close the first opening 41.

[0207] The movable partition 64 can include a partition connecting portion 64B and a partition flange plate 64A. The partition connecting portion 64B extends in the axial direction DA, and one end of the partition connecting portion 64B away from the first opening 41 is connected to one side of the intermediate portion 61B of the elastic member 61 facing the first opening 41. The partition flange plate 64A is arranged on the outer circumferential side of the partition connecting portion 64B, and is used to contact the device housing 38, i.e., to open and close the first opening 41. The outer diameter of the partition flange plate 64A is not less than the diameter of the first opening 41. The partition connecting portion 64B extends through the mounting hole 33C and is movable in the axial direction DA relative to the mounting hole 33C between the first open position and the first closed position in the mounting hole 33C.

[0208] The partition connecting portion 64B can have a smaller radial dimension to save material. Correspondingly, the mounting hole 33C, the elastic member 61, and the compression ring 65 can all have smaller dimensions. The radial dimension of the partition flange plate 64A can be greater than the diameter of the mounting hole 33C, so that the partition flange plate 64A is always located on the side of the mounting hole 33C facing the first opening 41, i.e., the partition flange plate 64A is always located in the ventilation cavity 84. The partition flange plate 64A is connected to the end of the partition connecting portion 64B in the axial direction DA, so that the axial dimension of the partition connecting portion 64B can be reduced.

[0209] Preferably, the middle portion 61B of the telescopic member is detachably connected to the movable partition 64. The movable partition 64 (in particular, the partition connecting portion 64B) is provided with a partition flange 64H, and the middle portion 61B of the telescopic member is tightly fitted with the partition flange 64H. For example, the outer circumferential surface of the movable partition 64 is configured with a radially outward annular partition flange 64H extending in the circumferential direction, and the inner circumferential surface of the side of the middle portion 61B of the telescopic member facing the first opening 41 is configured with a second groove 61H extending in the circumferential direction, the groove mouth and groove bottom of the second groove 61H being opposite in the radial direction DR, for accommodating the annular flange 64H. The movable partition 64 is made of a hard material (plastic, metal, etc.), and the partition flange 64H can be tightly fitted with the partition flange 64H by the elasticity of the telescopic member 61. For example, the inner circumferential surface of the side of the middle portion 61B of the telescopic member facing the first opening 41 is configured with a radially inward annular protrusion 61E extending in the circumferential direction, and the outer circumferential surface of the partition flange 64H is configured with a first groove 64E extending in the circumferential direction, the groove mouth and groove bottom of the first groove 64E being opposite in the radial direction DR, for accommodating the annular protrusion 61E. The movable partition 64 can press and deform the telescopic member 61 by the elasticity of the telescopic member 61, so that the annular protrusion 61E can enter the first groove 64E.

[0210] Preferably, the partition flange plate 64A is provided with a reinforcing rib 69 for reinforcing the strength of the partition flange plate 64A. The reinforcing rib 69 protrudes from the surface of the partition flange plate 64A. Preferably, the reinforcing rib 69 is arranged on the side of the partition flange plate 64A facing the first opening 41, so that the size of the partition connecting portion 64B in the axial direction DA can be reduced. The reinforcing rib 69 is configured as an annular rib, for example, and can be located on the inner side of the annular wall 83B.

[0211] Further, the mounting site 33B is provided with at least one guide post 48 extending in the axial direction DA towards the first opening 41, for example, the side of the partition 33 facing the device lower cover 34 is provided with at least one guide post 48 extending in the axial direction DA, and the partition flange plate 64A of the movable partition 64 is provided with at least one guide hole 64D for accommodating the guide post 48. The guide post 48 and the guide hole 64D are correspondingly arranged, and the guide post 48 is movable in the guide hole 64D in the axial direction DA. Thus, the guide post 48 and the guide hole 64D enable the movable partition 64 to be stably moved in the axial direction DA. A plurality of guide posts 48 and guide holes 64D can be uniformly distributed in the circumferential direction. The guide post 48 is located at the mouth of the mounting through-hole 33C. As shown in Figure 18 and Figure 19 As shown, the guide post 48 is located on the outer side of the annular wall 83B, i.e. outside the first opening 41, i.e. in the air passage cavity 84. Correspondingly, the guide hole 64D is also located on the outer side of the first opening 41.

[0212] As mentioned above, the steam exhaust third air path 113 and the cold air blowing fourth air path 114 of the cooking utensil 100 are simultaneously turned on, that is, the steam exhaust and the cold air blowing are simultaneously performed, and the two air paths share the air exhaust cavity 83 and the air passage cavity 84. In the air exhaust cavity 83 and the air passage cavity 84, the air flow directions of the third air path 113 and the fourth air path 114 are opposite and the air flow temperatures are different.

[0213] In order to make the hot steam which needs to move along the third air path 113 as little as possible to enter the fourth air path 114, as shown in Figure 12 and Figure 14 The air exhaust cavity bottom wall 83A is further provided with a first blocking piece 45, which is located between the air exhaust port 83D and the air exhaust port 83C. The first blocking piece 45 protrudes from the air exhaust cavity bottom wall 83A towards the inside of the air exhaust cavity 83, and to a certain extent prevents the air flow from flowing between the air exhaust port 83D and the air exhaust port 83C. In other words, the first blocking piece 45 divides the air exhaust cavity 83 into a steam exhaust side 83E and a cold air communication side 83F. It can be understood that the air exhaust port 83C is located in the steam exhaust side 83E. The air exhaust port 83D is located in the cold air communication side 83F.

[0214] Further, the air passage cavity 84 is provided with a second blocking piece 49. The lower side of the second blocking piece 49 is connected to the lower cover bottom wall 34A and the lower cover side wall 34B, and the upper edge thereof conforms to the bottom shape of the partition piece 33, thereby generally dividing the air passage cavity 84 into two. Preferably, the second blocking piece 49 is located in the extension direction of the first blocking piece 45, that is, on the extension line of the first blocking piece 45, and cooperates with the first blocking piece 45 to separate the cold and hot air flows. Due to the radial arrangement of the air exhaust cavity 83 and the air passage cavity 84, two second blocking pieces 49 are provided in the air passage cavity 84, which correspond to the extension of the two side edges 46 of the first blocking piece 45 on the extension line of the first blocking piece 45.

[0215] As shown in Figure 9As shown, after hot steam enters the exhaust chamber 83 from the exhaust pipe 56 along the red third air path 113, due to the blocking effect of the first blocking member 45, most of the steam enters the ventilation chamber 84 from the side of the first blocking member 45 facing the exhaust port 83C, and is then discharged into the environment from the side of the second blocking member 49 facing the exhaust port 83C. The reinforcing rib 69 extends toward the exhaust chamber 83 and is located inside the annular wall 83B. The reinforcing rib 69 and the first blocking member 45 are staggered in the axial direction DA, forming a double barrier with the first blocking member 45 to a certain extent, further hindering the movement of hot steam toward the exhaust port 83D. Preferably, the reinforcing rib 69 is located between the first blocking member 45 and the annular wall 83B in the radial direction DR. The parts of the exhaust chamber 83 and the ventilation chamber 84 located on the side of the two blocking members facing the exhaust port 83C are occupied by hot steam, while the ambient cold air tends to enter the ventilation chamber 84 along the blue fourth air path 114 from the side of the second blocking member 49 facing the exhaust port 83D, and then enter the exhaust chamber 83 from the side of the first blocking member 45 facing the exhaust port 83D.

[0216] like Figures 12 to 14 As shown, preferably, the two side edges 46 of the first blocking member 45 spaced apart in the width direction are connected to the annular wall 83B to more fully block the air inlet 83D and the air outlet 83C. Preferably, the middle portion 47 of the first blocking member 45 in the width direction protrudes from the annular wall 83B in the axial direction DA toward the movable partition assembly 36 to more fully block the air inlet 83D and the air outlet 83C. The partition connection portion 64B of the movable partition assembly 36 includes a receiving groove 64C (see Figure 12 ), the opening of the accommodating groove 64C faces the first opening 41, and the accommodating groove 64C is used to accommodate the middle part 47 of the first barrier 45. In this way, the middle part 47 of the first barrier 45 can have a certain height, which is conducive to isolating hot steam and ambient cold air. In order to adapt to the shape of the mounting through hole 33C, the partition connecting portion 64B is generally cylindrical in shape, so that the accommodating groove 64C is a circular groove. In order to extend the effective length of the middle part 47 of the first barrier 45, the middle part 47 of the first barrier 45 includes an arc-shaped plate, and the arc axis of the arc-shaped plate substantially coincides with the axis of the annular wall 83B. The curvature of the arc-shaped plate is, for example, 90 degrees to 180 degrees. The first barrier 45, the annular wall 83B, the exhaust pipe 56, the vent pipe 57 and the lower cover 34 of the device can be formed as one piece.

[0217] Preferably, the axis of the exhaust port 83C substantially coincides with the axis of the annular wall 83B, so that the steam can evenly act on the movable partition 64. Preferably, the diameter of the exhaust port 83C is larger than the diameter of the air extraction port 83D, which facilitates the steam to quickly enter the exhaust and extraction chamber 83 and occupy the third air path 113.

[0218] In the present application, preferably, the axis of the device upper cover 31, the partition 33, the device lower cover 34, the mounting through hole 33C, the movable baffle assembly 36 and the annular wall 83B are all the axis PA of the gas path integration device 30.

[0219] As shown in FIG. 1, the movable baffle assembly 36 is connected with a spring, for example, a second spring 92B, and is moved from the first open position to the first closed position under the action of the spring. For example, the second spring 92B is sleeved on the outer periphery of the guide column 48, one end of the second spring 92B abuts against the mounting position 33B of the partition 33, and the other end abuts against the baffle flange plate 64A. When the movable baffle 64 is pushed open by steam, the second spring 92B is compressed. When the steam pressure is insufficient, the second spring 92B restores to push the movable baffle 64 back to the first closed position. Figure 9 Figure 11 As shown in FIG. 1, the movable baffle assembly 36 is connected with a spring, for example, a second spring 92B, and is moved from the first open position to the first closed position under the action of the spring. For example, the second spring 92B is sleeved on the outer periphery of the guide column 48, one end of the second spring 92B abuts against the mounting position 33B of the partition 33, and the other end abuts against the baffle flange plate 64A. When the movable baffle 64 is pushed open by steam, the second spring 92B is compressed. When the steam pressure is insufficient, the second spring 92B restores to push the movable baffle 64 back to the first closed position.

[0220] As shown in FIG. 1, the movable baffle assembly 36 is connected with a spring, for example, a second spring 92B, and is moved from the first open position to the first closed position under the action of the spring. For example, the second spring 92B is sleeved on the outer periphery of the guide column 48, one end of the second spring 92B abuts against the mounting position 33B of the partition 33, and the other end abuts against the baffle flange plate 64A. When the movable baffle 64 is pushed open by steam, the second spring 92B is compressed. When the steam pressure is insufficient, the second spring 92B restores to push the movable baffle 64 back to the first closed position. Figure 18 As shown in FIG. 1, the movable baffle assembly 36 is connected with a spring, for example, a second spring 92B, and is moved from the first open position to the first closed position under the action of the spring. For example, the second spring 92B is sleeved on the outer periphery of the guide column 48, one end of the second spring 92B abuts against the mounting position 33B of the partition 33, and the other end abuts against the baffle flange plate 64A. When the movable baffle 64 is pushed open by steam, the second spring 92B is compressed. When the steam pressure is insufficient, the second spring 92B restores to push the movable baffle 64 back to the first closed position.

[0221] Figure 19 As shown in FIG. 1, the movable baffle assembly 36 is connected with a spring, for example, a second spring 92B, and is moved from the first open position to the first closed position under the action of the spring. For example, the second spring 92B is sleeved on the outer periphery of the guide column 48, one end of the second spring 92B abuts against the mounting position 33B of the partition 33, and the other end abuts against the baffle flange plate 64A. When the movable baffle 64 is pushed open by steam, the second spring 92B is compressed. When the steam pressure is insufficient, the second spring 92B restores to push the movable baffle 64 back to the first closed position.

[0222] In some embodiments not shown in the present application, the lower cover bottom wall 34A does not extend along a plane, wherein the middle portion and the outer periphery portion are not in the same plane, for example, wherein the middle portion is concave downward relative to the outer periphery portion, for example, the annular wall 83B constitutes part of the outer surface of the device shell 38.

[0223] ​​In other embodiments not shown in the present application, the cavity space of the air exhaust cavity 83 is entirely provided by the moving partition assembly 36. For example, the lower cover 34 is not provided with the annular wall 83B, the reinforcing ribs 69 of the moving partition 64 of the moving partition assembly 36 form the sidewall of the air exhaust cavity 83, the accommodating groove 64C forms the cavity space of the air exhaust cavity 83, and the lower cover bottom wall 34A forms the bottom wall of the air exhaust cavity 83. The first sealing member 91A is sleeved on the reinforcing rib 69.

[0224] Of course, the air path integration device 30 can also be configured in other forms to integrate the air paths of air suction, steam exhaust, and cold air blowing.

[0225] The processes and steps described in all the preferred embodiments above are merely examples. Unless adverse effects occur, various processing operations can be performed in different orders from the above processes. The order of steps of the above processes can also be added, combined, or deleted according to actual needs.

[0226] In understanding the scope of the present application, the term "comprising" and its derivatives, as used herein, are intended to be open-ended terms that specify the presence of the stated features, elements, components, groups, integers, and / or steps, but do not exclude the presence of other unstated features, elements, components, groups, integers and / or steps. The term "comprising" herein, also includes the terms "including", "containing", "having", and the like.

[0227] The term "attached" or "attach" used herein includes a configuration in which an element is directly fixed to another element by fixing the element to the other element, a configuration in which an element is indirectly fixed to another element by fixing the element to an intermediate member which is in turn fixed to the other element, and a configuration in which one element is integral with another element, i.e., one element is essentially a part of the other element. This definition also applies to words with similar meanings, such as "connected", "coupled", "joined", "engaged", "fixed", and derivatives thereof. Finally, the degree terms such as "substantially", "approximately", and "about" used herein mean an amount of deviation that does not significantly change the end result.

[0228] Unless otherwise defined, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing specific embodiments only and is not intended to be limiting of the application. The features described in one embodiment can be applied to another embodiment, either individually or in combination, unless the features are not applicable or are otherwise stated.

[0229] The present application has been described by the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and illustration, and are not intended to limit the present application to the scope of the described embodiments. Furthermore, those skilled in the art can understand that the present application is not limited to the above embodiments, and more various modifications and changes can be made according to the teachings of the present application, and these modifications and changes all fall within the scope of the present application claimed.

Claims

1. A cooking utensil, characterized in that: The cooking appliance comprises: A cooking cavity for holding food; An airflow generating device, the airflow generating device having an airflow inlet and an airflow outlet; a reversing valve, the reversing valve comprising a first valve port, a second valve port, and a third valve port, the first valve port being configured to communicate with the environment, the second valve port being configured to communicate with the cooking cavity, and the third valve port being configured to communicate with the airflow outlet, the reversing valve being configured to enable the third valve port to communicate with the first valve port and the second valve port, respectively; and An air path integration device, comprising: The device housing surrounds the device cavity and is provided with an outer shell opening so that the device cavity communicates with the external environment. A movable baffle assembly is disposed in the inner cavity of the device and defines an exhaust cavity with a portion of the device housing, the exhaust cavity being in communication with the cooking cavity, the movable baffle assembly having a first open position and a first closed position, and A vent pipe connects the exhaust chamber and the air inlet. Wherein, when the movable partition assembly is located at the first open position, the exhaust chamber is connected to the shell opening; when the movable partition assembly is located at the first closed position, the exhaust chamber is separated from the shell opening.

2. The cooking appliance according to claim 1, wherein The movable partition assembly is configured to move from the first closed position to the first open position under the action of steam pressure in the cooking cavity.

3. The cooking appliance according to claim 2, wherein: A mounting through hole is provided in the inner cavity of the device, and the movable partition assembly is passed through the mounting through hole.

4. The cooking appliance according to claim 3, wherein: The movable partition assembly is movable relative to the mounting through-hole in an axial direction of the mounting through-hole between the first open position and the first closed position.

5. The cooking appliance according to claim 4, wherein: The movable partition assembly comprises: a telescopic member connected to the periphery of the mouth of the mounting through hole and capable of extending and contracting between the first open position and the first closed position in the axial direction of the mounting through hole; and The movable partition and part of the device shell define the exhaust chamber to receive the action of the steam pressure. The movable partition is passed through the mounting hole and connected to the telescopic member to move synchronously with the telescopic member between the first open position and the first closed position.

6. The cooking appliance according to claim 5, characterized in that The telescopic member includes a telescopic member outer peripheral portion and a telescopic member middle portion, the telescopic member outer peripheral portion is connected to the telescopic member middle portion at the periphery of the telescopic member middle portion, the telescopic member outer peripheral portion is used to be connected to the periphery of the mounting through hole, and the telescopic member middle portion is configured to be movable along the axial direction relative to the telescopic member outer peripheral portion between the first open position and the first closed position; The movable partition is connected to the middle portion of the telescopic member.

7. The cooking appliance according to claim 5, wherein: The movable partition assembly further comprises a pressing ring, which presses the outer peripheral portion of the telescopic member onto the periphery of the opening of the mounting through hole.

8. The cooking appliance according to claim 5, wherein: The telescopic member is connected to a side of the mounting through hole away from the exhaust cavity; and / or The telescopic member is detachably connected to the movable partition.

9. The cooking appliance according to claim 6, wherein The telescopic member is made of elastic material, and the middle portion of the telescopic member includes a pleated structure along the radial direction, and the pleated structure is concave and convex in the axial direction.

10. The cooking appliance according to claim 9, characterized in that The movable partition is provided with a partition flange, and the middle portion of the telescopic member is tightly matched with the partition flange.

11. The cooking appliance according to claim 5, wherein The movable partition comprises: a partition connecting portion extending along the axial direction, one end of which is adapted to pass through the mounting through hole and be connected to the middle portion of the telescopic member; and The partition flange plate is arranged on the outer peripheral side of the partition connecting portion and is used for contacting the device housing.

12. The cooking appliance according to claim 11, wherein The partition flange plate is provided with reinforcing ribs; and / or At least one guide column extending along the axial direction is provided around the mouth of the mounting through hole, and the partition flange plate is provided with at least one guide hole, and the guide hole is provided corresponding to the guide column for accommodating the guide column.

13. The cooking appliance according to claim 2, wherein The movable partition assembly is connected to a spring, and the spring is used to move the movable partition assembly from the first open position to the first closed position; or The movable partition assembly is provided with a first magnet, and a second magnet is also provided in the inner cavity of the device. The magnetic force between the first magnet and the second magnet attracts each other, and the direction of the magnetic force is parallel to the line connecting the first open position and the first closed position.

14. The cooking appliance according to claim 1, wherein The bottom wall of the exhaust cavity is provided with an exhaust port and an exhaust port, the exhaust port is connected with the air flow inlet, and the exhaust port is connected with the cooking cavity. When the movable partition assembly is located in the first closed position, the movable partition assembly forms at least the top wall of the exhaust cavity.

15. The cooking appliance according to claim 14, wherein The axis of the exhaust port roughly coincides with the axis of the side wall of the exhaust chamber.

16. The cooking appliance according to claim 14, wherein The bottom wall of the exhaust chamber is further provided with a first blocking member, which is located between the exhaust port and the exhaust port, and protrudes from the bottom wall of the exhaust chamber toward the interior of the exhaust chamber.

17. The cooking appliance according to claim 16, wherein Two side edges of the first blocking member spaced apart along the width direction are connected to the side walls of the exhaust cavity.

18. The cooking appliance according to claim 17, wherein A middle portion of the first blocking member in the width direction protrudes from the side wall of the air extraction cavity toward the movable partition assembly along the axial direction of the side wall of the air extraction cavity. The movable partition assembly includes a receiving groove for receiving the middle portion of the first blocking member.

19. The cooking appliance according to claim 18, wherein The middle portion of the first blocking member comprises an arc-shaped plate, and an arc axis of the arc-shaped plate substantially coincides with an axis of a side wall of the exhaust chamber.

20. The cooking appliance according to claim 16, wherein The air path integration device further comprises a ventilation cavity, which is a part of the inner cavity of the device, and the cavity wall of the ventilation cavity is provided with the shell opening; When the movable partition assembly is located at the first open position, the exhaust chamber is connected to the ventilation chamber; when the movable partition assembly is located at the first closed position, the exhaust chamber is isolated from the ventilation chamber.

21. The cooking appliance according to claim 20, wherein The ventilation cavity is located on the outer periphery of the side wall of the exhaust cavity.

22. The cooking appliance according to claim 21, wherein The bottom wall of the exhaust cavity and the bottom wall of the ventilation cavity extend in the same plane.

23. The cooking appliance according to claim 20, wherein The air path integration device further includes a second blocking member, which is disposed in the ventilation cavity and connected to a cavity wall of the ventilation cavity, and extends along an extension line of the first blocking member.

24. The cooking appliance according to any one of claims 1 to 23, characterized in that The reversing valve further comprises: a reversing valve housing, the reversing valve housing enclosing an inner cavity of the reversing valve; and A valve core is disposed in the inner cavity of the reversing valve and is movable relative to the reversing valve housing between a first valve core position and a second valve core position. Wherein, when the valve core is located at the first valve core position, the third valve port is communicated with the first valve port; when the valve core is located at the second valve core position, the third valve port is communicated with the second valve port.

25. The cooking appliance according to claim 24, wherein The cooking appliance further includes a driving device, the valve core is connected to the driving device, and is driven by the driving device to move relative to the reversing valve housing.

26. The cooking appliance according to claim 24, wherein A temperature-sensitive deformable component is also provided in the inner cavity of the reversing valve. The temperature-sensitive deformable component is connected to the valve core. The temperature-sensitive deformable component deforms when the temperature changes, thereby driving the valve core to move relative to the reversing valve housing.

27. The cooking appliance according to claim 26, wherein The temperature-sensitive deformation component is a memory spring or a bimetallic strip.

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