Gas circuit integration device and cooking utensil

Abstract

The utility model discloses a gas circuit integration device for a cooking utensil and the cooking utensil. The cooking utensil is provided with a cooking cavity and an airflow generating device. The airflow generating device is provided with an airflow inlet and an airflow outlet. The gas circuit integration device comprises a device shell, a first ventilation pipe, a second ventilation pipe and a floating sealing assembly. A device inner cavity is defined by the device shell and comprises an air blowing cavity and a switching cavity, and the switching cavity is located below the air blowing cavity. The first ventilation pipe is used for communicating the airflow outlet with the switching cavity. The second breather pipe is used for communicating the cooking cavity with the blowing cavity. The floating sealing assembly is arranged between the switching cavity and the air blowing cavity in a floating mode and is provided with a second opening position enabling the switching cavity and the air blowing cavity to be communicated and a second closing position enabling the switching cavity and the air blowing cavity to be separated, and the second opening position is located above the second closing position. The floating sealing assembly has the preset weight, and when the air pressure in the switching cavity is smaller than the gravity corresponding to the preset weight of the floating sealing assembly, the floating sealing assembly is located at the second closing position.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cooking utensils, in particular to an air path integration device for a cooking utensil and a cooking utensil with the air path integration device. BACKGROUND

[0002] In order to improve the cooking effect of the rice cooker, the existing rice cooker generally improves the rice water absorption speed by drawing negative pressure in the cooking cavity, and realizes the rice preservation effect by drawing negative pressure after cooking. At the same time, cold air is directly blown into the cooking cavity when the food is boiling to prevent overflow. However, in the existing technical solutions, a driving device is used to drive a reversing valve to change the air path, which involves many components, complex control method and high product cost.

[0003] Therefore, there is a need for an air path integration device and a cooking utensil to at least partially solve the above problems. SUMMARY

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

[0005] To at least partially solve the above problems, the first aspect of the present application provides an air path integration device for a cooking utensil, the cooking utensil having a cooking cavity for containing food materials, the cooking utensil further comprising an air flow generating device having an air flow inlet and an air flow outlet, the air path integration device comprising:

[0006] a device housing enclosing a device inner cavity;

[0007] a blowing cavity, which is part of the device inner cavity;

[0008] a second air pipe for connecting the cooking cavity and the blowing cavity;

[0009] a switching cavity, which is part of the device inner cavity and located below the blowing cavity;

[0010] a first air pipe for connecting the air flow outlet and the switching cavity; and

[0011] a floating sealing assembly, which is floatingly arranged between the switching cavity and the blowing cavity, and has a second open position for connecting the two cavities and a second closed position for separating the two cavities, the second open position being above the second closed position;

[0012] The floating seal assembly has a preset weight, and when the air pressure in the switching chamber is less than the gravity corresponding to the preset weight, the floating seal assembly is located in the second closed position.

[0013] According to the present application, when the floating seal assembly is in its second, open position, the blowing chamber communicates with the switching chamber, and the airflow outlet of the airflow generating device communicates with the cooking chamber, enabling cold air to be blown into the cooking chamber. When the floating seal assembly is in its second, closed position, the blowing chamber is isolated from the switching chamber, enabling negative pressure to be drawn into the cooking chamber. Thus, the airflow integration device integrates the airflow paths of the airflow generating device in both negative pressure and cold air modes, and utilizes the gravity of the floating seal assembly to overcome this gravity to switch the airflow paths. Compared to prior art, this reduces the number of components, lowering the complexity and cost of the cooking appliance.

[0014] Optionally, the floating seal assembly is configured to move from the second closed position to the second open position by relying on an external force, and to move from the second open position to the second closed position under the action of its own gravity.

[0015] According to the present application, the floating seal assembly relies on its own gravity to separate the switching chamber and the blowing chamber, eliminating the need for electronic control components, simplifying control, and reducing costs.

[0016] Optionally, the inner cavity of the device is also used to communicate with the cooking cavity, and the external force is the pressure of the steam in the cooking cavity.

[0017] According to this application, the floating seal assembly relies on the pressure of cooking steam to move to the second open position, eliminating electronic control components, simplifying control, and reducing costs. Furthermore, when the steam pressure in the cooking chamber overcomes the weight of the floating seal assembly, indicating that the food in the cooking chamber is boiling, the cold air channel is opened at this time, with precise timing.

[0018] Optionally, the blowing chamber and the switching chamber have a common second common cavity wall, and the second common cavity wall is provided with a second opening. When the floating seal assembly is located in the second closed position, the floating seal assembly closes the second opening; when the floating seal assembly is located in the second open position, the floating seal assembly opens the second opening.

[0019] According to the present application, the method for switching the switching chamber and the blowing chamber is simple.

[0020] Optionally, the axis of the second opening extends in the up-down direction, the floating seal assembly is passed through the second opening, and is movable in the second opening between the second open position and the second closed position, and there is a gap between at least a portion of the floating seal assembly and the inner circumferential surface of the second opening.

[0021] According to the application, the floating sealing assembly is simple in connection with the second opening.

[0022] Optionally, the floating sealing assembly further comprises a counterweight arranged on the floating member first end portion above the blocking member.

[0023] a floating member extending through the second opening, the floating member being movable between the second closed position and the second open position, the floating member comprising a floating member first end portion and a floating member second end portion arranged oppositely in the up-down direction, the floating member first end portion being above the floating member second end portion, the floating member first end portion extending out of and above the second opening, the floating member second end portion being arranged to receive the external force, at least a portion of the floating member having a gap with an inner circumferential surface of the second opening; and

[0024] a blocking member connected to the floating member first end portion, the blocking member blocking the second opening at an upper end of the second opening when the floating member is in the second closed position, the blocking member being above and away from the second opening when the floating member is in the second open position.

[0025] According to the application, the floating sealing assembly is simple in opening and closing the second opening.

[0026] Optionally, the floating sealing assembly further comprises a counterweight arranged on the floating member first end portion above the blocking member.

[0027] According to the application, the counterweight can adjust the weight of the floating sealing assembly, so that the opening time or opening condition of the second opening can be controlled according to specific needs.

[0028] Optionally, the floating member second end portion is below the second opening.

[0029] According to the application, the floating member second end portion is arranged below the second opening, so as to facilitate the external force acting on the floating member.

[0030] Optionally, the floating sealing assembly further comprises a limiting member connected to the floating member second end portion, the limiting member having a radial dimension greater than a radial dimension of the second opening.

[0031] According to the application, the limiting member is used to prevent the floating member from being pulled out of the second opening.

[0032] Optionally, the floating member further comprises a floating member connecting portion between the floating member first end portion and the floating member second end portion, the floating member connecting portion extending through the second opening and being movable up and down in the second opening, the floating member connecting portion having a gap with an inner circumferential surface of the second opening.

[0033] According to the present application, when the floating member moves up and down, the floating member connecting portion is always located in the second opening, and a gap is formed between the floating member connecting portion and the inner circumferential surface of the second opening, so that the airflow can flow through the second opening.

[0034] Optionally, the outer circumferential surface of the floating member connecting portion is provided with at least one third groove extending in the axial direction, so that a gap is formed between the floating member connecting portion and the inner circumferential surface of the second opening.

[0035] According to the present application, the third groove is used to make the airflow flow through the second opening.

[0036] Optionally, the radial dimension of the floating member connecting portion is smaller than the radial dimension of the second opening, and the floating member connecting portion is in a clearance fit with the second opening.

[0037] According to the present application, the method of forming a gap between the floating member connecting portion and the second opening is simple.

[0038] Optionally, the preset weight of the floating sealing assembly is 1g to 50g.

[0039] Further, the preset weight of the floating sealing assembly is 5g to 20g.

[0040] According to the present application, the mass of the floating sealing assembly can be flexibly set.

[0041] Optionally, the device housing is provided with a shell opening, the device inner cavity is communicated with the external environment via the shell opening, a second one-way valve is arranged on the cavity wall of the switching cavity, the second one-way valve has an open position driven to open by the air pressure in the switching cavity, and when the second one-way valve is located at the open position, the switching cavity is communicated with the shell opening.

[0042] According to the present application, the air path integration device cooperates with the second one-way valve and the floating sealing assembly to switch the air path for drawing negative pressure and the air path for blowing cold air.

[0043] The second one-way valve is opened under the action of the airflow, so that the unidirectionality of the airflow is ensured. The second one-way valve opens the third opening by a mechanical method, so that the electric control component is omitted, and the control is simple and the cost is lower.

[0044] Optionally,

[0045] The second one-way valve comprises an elastic component, which is configured to be deformed to open under the action of the air pressure in the switching cavity and to be restored by its own elasticity to close; or

[0046] The third opening is arranged on the cavity wall of the switching cavity, the second one-way valve is used for opening and closing the third opening, the axial direction of the third opening is the up-down direction, and the second one-way valve is configured as a gravity ball or a pneumatic float.

[0047] According to the application, the second one-way valve mechanically opens and closes the gas path, thereby saving the electric control component, and the control is simple and the cost is lower.

[0048] Optionally, the gas path integration device further comprises:

[0049] The exhaust cavity is a part of the inner cavity of the device and is used for communication with the cooking cavity; and

[0050] The third air pipe is used for communication between the exhaust cavity and the gas flow inlet.

[0051] According to the application, the gas path integration device further integrates the air inlet path of the air flow generating device in the negative pressure extraction mode.

[0052] Optionally, the gas path integration device is configured to change the on-off state of the exhaust cavity and the shell opening, and when the exhaust cavity and the shell opening are in communication, the floating sealing assembly is located at the second open position.

[0053] According to the application, the gas path integration device further integrates the air inlet path of the air flow generating device in the cold air blowing mode.

[0054] The second aspect of the application provides a cooking appliance, which comprises:

[0055] The cooking cavity is used for containing food materials;

[0056] The air flow generating device has a gas flow inlet and a gas flow outlet; and

[0057] According to any one of the gas path integration devices in the first aspect, the first air pipe communicates the gas flow outlet with the switching cavity, and the second air pipe communicates the cooking cavity with the blowing cavity.

[0058] According to the application, when the floating sealing assembly is located at the second open position, the blowing cavity is in communication with the switching cavity, the gas flow outlet of the air flow generating device is in communication with the cooking cavity, and the cold air blowing of the cooking cavity can be realized; when the floating sealing assembly is located at the second closed position, the blowing cavity is cut off from the switching cavity, and the negative pressure extraction of the cooking cavity can be realized. Therefore, the gas flow integration device integrates the air outlet paths of the air flow generating device in the negative pressure extraction and cold air blowing modes, and switches the gas path by the gravity of the floating sealing assembly and the force overcoming the gravity, thereby reducing the number of components, the complexity and the cost of the cooking appliance relative to the prior art.

[0059] Optionally, the cooking appliance further comprises:

[0060] a pot body, wherein the pot body is provided with the cooking cavity; and

[0061] The cover body is used to cover the pot body. The cover body is provided with the air path integration device and the air flow generating device. When the cover body covers the pot body, the second ventilation pipe connects the blowing cavity and the cooking cavity.

[0062] According to the present application, the air path integration device and the air flow generating device are arranged nearby to facilitate connection between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] The following drawings of the present application are used as part of the present application for understanding the present application. The drawings show representative embodiments of the present application and are used to explain the principles of the present application rather than to limit the present application.

[0064] In the attached figure:

[0065] Figure 1 is a partial perspective schematic diagram of a cooking appliance according to the first embodiment of the present application;

[0066] Figure 2 for Figure 1 A schematic top view of a portion of the cooking appliance shown;

[0067] Figure 3 for Figure 1 A schematic side cutaway view of the cooking appliance shown;

[0068] Figure 4 for Figure 1 A partial exploded perspective view of the cooking appliance shown;

[0069] Figure 5 for Figure 2 A schematic top view of a portion of the lining cover;

[0070] Figure 6 for Figure 1 A schematic diagram of the gas path structure of the cooking appliance shown;

[0071] Figure 7 for Figure 1 A side cross-sectional schematic diagram of the gas path integration device;

[0072] Figure 8 for Figure 1 A three-dimensional cross-sectional schematic diagram of the gas path integration device;

[0073] Figure 9 for Figure 8 Enlarged view of section A;

[0074] Figure 10 for Figure 1Fig. 1 is a perspective view of a gas circuit integration device in accordance with an embodiment of the present application;

[0075] Figure 11 Fig. 2 is a side view of the gas circuit integration device of Fig. 1; Figure 1

[0076] Figure 12 Fig. 3 is a top view of the gas circuit integration device of Fig. 1; Figure 1

[0077] Figure 13 Fig. 4 is a bottom view of the gas circuit integration device of Fig. 1; Figure 1

[0078] Figure 14 Fig. 5 is an exploded perspective view of the gas circuit integration device of Fig. 1; Figure 1

[0079] Figure 15 Fig. 6 is a perspective view of a device lower cover in accordance with an embodiment of the present application; Figure 7

[0080] Figure 16 Fig. 7 is a top view of the device lower cover of Fig. 6; Figure 7

[0081] Figure 17 Fig. 8 is a side view of the device lower cover of Fig. 6; Figure 7

[0082] Figure 18 Fig. 9 is a perspective view of an upper partition pre-assembly in accordance with an embodiment of the present application; Figure 14

[0083] Figure 19 Fig. 10 is a top view of the upper partition pre-assembly of Fig. 9; Figure 18

[0084] Figure 20 Fig. 11 is a side view of the upper partition pre-assembly of Fig. 9; Figure 18

[0085] Figure 21 Fig. 12 is a perspective view of a lower partition pre-assembly in accordance with an embodiment of the present application; Figure 14

[0086] Figure 22 Fig. 13 is a top view of the lower partition pre-assembly of Fig. 12; Figure 21

[0087] Figure 23 Fig. 14 is a side view of the lower partition pre-assembly of Fig. 12; Figure 21

[0088] Figure 24 Fig. 15 is a bottom view of a lower partition in accordance with an embodiment of the present application; Figure 7 Fig. 16 is a perspective view of a gas circuit integration device in accordance with an embodiment of the present application;​​​​​​​​​​​​​

[0089] Figure 25 Fig. 2 is a side view of the gas path integration device of Fig. 1, wherein the movable partition assembly is in the first closed position and the floating seal assembly is in the second closed position; Figure 1

[0090] Figure 26 Fig. 4 is a side view of the gas path integration device of Fig. 1, wherein the movable partition assembly is in the first open position and the floating seal assembly is in the second open position; Figure 1

[0091] Figure 27 Fig. 6 is a perspective exploded view of the movable partition assembly of Fig. 1; Figure 7

[0092] Figure 28 Fig. 8 is a side view of the movable partition assembly of Fig. 1; Figure 7

[0093] Figure 29 Fig. 10 is a top view of the movable partition assembly of Fig. 1; Figure 7

[0094] Figure 30 Fig. 12 is a perspective exploded view of the floating seal assembly of Fig. 1; Figure 7

[0095] Figure 31 Fig. 14 is a side view of the floating seal assembly of Fig. 1; Figure 7

[0096] Figure 32 Fig. 16 is a bottom view of the floating seal assembly of Fig. 1; Figure 7

[0097] Figure 33 Fig. 18 is a side view of a partial gas path integration device of a cooking appliance according to a second embodiment of the present application;

[0098] Figure 34 Fig. 20 is a side view of a partial gas path integration device of a cooking appliance according to a third embodiment of the present application.

[0099] BRIEF DESCRIPTION OF THE DRAWINGS

[0100] 10: cover 11: gasket

[0101] 11A: gasket receiving groove 12: removable cover

[0102] 13: face cover 14: airflow generating device

[0103] 15: airflow inlet 16: airflow outlet

[0104] ​​​​​​​​17A: top temperature sensor 17B: bottom temperature sensor

[0105] 18: gas outlet passage 19: gas inlet passage

[0106] 20: pot body 21: inner pot

[0107] 22: cooking cavity 28: heating device

[0108] 30: gas path integration device 31: device upper cover

[0109] 31A: upper cover top wall 31B: upper cover side wall

[0110] 31C: upper cover annular wall 32: upper partition

[0111] 32A: partition plate 32B: upper groove side wall

[0112] 32C: lower groove side wall 32D: partition plate connecting portion

[0113] 32E: through hole

[0114] 33: lower partition 33A: air vent

[0115] 33B: mounting position 33C: mounting through hole

[0116] 33D: through hole 34: device lower cover

[0117] 34A: lower cover bottom wall 34B: lower cover side wall

[0118] 34C, 34D: through hole 35: second one-way valve

[0119] 36: moving partition assembly 37: floating sealing assembly

[0120] 38: device shell 39: device inner cavity

[0121] 41: first opening 42: second opening

[0122] 43: third opening 45: first blocking piece

[0123] 46: blocking piece side edge 47: blocking piece middle portion

[0124] 48: guide column 49: second blocking piece

[0125] 51: first common cavity wall 52: second common cavity wall

[0126] 53: upper partition preassembled assembly 54: lower partition preassembled assembly

[0127] 55: shell opening 55A: first shell opening

[0128] 55B: second housing aperture 56: exhaust pipe

[0129] 57: third vent pipe 58: first vent pipe

[0130] 59: second vent pipe 61: telescopic member

[0131] 61A: telescopic member outer peripheral portion 61B: telescopic member intermediate portion

[0132] 61C: pleated structure 61E: annular protrusion

[0133] 61H: second groove 64: moving partition

[0134] 64A: partition flange plate 64B: partition connecting portion

[0135] 64C: accommodating groove 64D: guide hole

[0136] 64E: first groove 64F, 64G: through hole

[0137] 64H: partition flange 65: press ring

[0138] 66: press ring connecting portion 67: press ring

[0139] 69: reinforcing rib 71: floating member

[0140] 71A: floating member first end portion 71B: floating member second end portion

[0141] 71C: floating member connecting portion 71E: first mounting groove

[0142] 71F: second mounting groove 75: blocking member

[0143] 76: diaphragm mounting hole 77: limiting member

[0144] 78: counterweight member 81: air blowing cavity

[0145] 82: switching cavity 83: air pumping and exhausting cavity

[0146] 83A: air pumping and exhausting cavity bottom wall 83B: annular wall

[0147] 83C: exhaust port 83D: air pumping port

[0148] 83E: steam discharging side 83F: cold air communicating side

[0149] 84: venting cavity 84A: venting cavity bottom wall

[0150] 85: exhaust cavity 86: combined cavity

[0151] 91A: first seal 91B: second seal

[0152] 91C: third seal 91D: fourth seal

[0153] 91E: fifth seal

[0154] 94A: first rotary catch 94B: second rotary catch

[0155] 94C: third rotary catch 100: cooking appliance

[0156] 110: gas path structure 111: first gas path

[0157] 112: second gas path 113: third gas path

[0158] 114: fourth gas path 115: fifth gas path

[0159] DA: axial direction

[0160] DR: radial direction PA: axis DETAILED DESCRIPTION

[0161] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. One skilled in the relevant art will recognize, however, that the application can be practiced without one or more of the specific details, or with other methods, components, materials, etc. In other instances, well-known structures have not been described in detail in order to avoid obscuring the application.

[0162] For a thorough understanding of the 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 the specific details set forth in the following description. Reference is made to the drawings where like reference numerals refer to like elements throughout.

[0163] The ordinal numbers such as "first" and "second" cited in the present application are merely identifiers and have no other meaning, such as a specific order, etc. Also, for example, the term "first part" itself does not imply the existence of "second part", and the term "second part" itself does not imply the existence of "first part". The use of "first", "second", and "third" words does not indicate any order, and these words can be interpreted as names.

[0164] It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and similar expressions used in this application are for illustrative purposes only and are not limiting.

[0165] In this document, “equal”, “same”, etc. are not strictly limited in a mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.

[0166] Unless otherwise stated, numerical ranges herein include not only the entire range between its two endpoints but also the several sub-ranges contained therein.

[0167] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings.

[0168] The present application provides a cooking appliance.

[0169] like Figures 1 to 4 As shown, in a first embodiment, the cooking utensil 100 according to the present application may include a pot body 20 and a lid body 10. The pot body 20 includes, for example, a pot inner body 21. Generally, the pot body 20 may have a cylindrical (or other shaped) accommodating cavity, and the pot inner body 21 may be freely placed in or taken out of the accommodating cavity to facilitate the cleaning of the pot inner body 21. The pot inner body 21 is made of, for example, a metal material and is constructed as a rotating body with an opening and an inner cavity formed by a pot wall. The capacity of the pot inner body 21 is generally less than 6L, for example, the capacity of the pot inner body 21 may be 2L or 4L, etc. The pot inner body 21 has a pot inner body opening for taking in and placing food, and the internal space of the pot inner body 21 forms a cooking cavity 22, which is used to hold and heat food. The lid body 10 may be pivotally connected to the pot body 20 by a pivot shaft for covering the pot body 20.

[0170] Cooking appliance 100 includes a heating device 28. This device is typically located at the bottom of pot body 20, below inner pot 21. Heating device 28 heats inner pot 21 and the food within, thereby achieving cooking. Heating device 28 can be configured as, for example, a heating plate, an electromagnetic heating coil, or the like.

[0171] Cooking appliance 100 includes a top temperature sensor 17A, typically located on lid 10, for detecting the top temperature of cooking cavity 22. A bottom temperature sensor 17B is also located within pot body 20 for detecting the bottom temperature of cooking cavity 22. Bottom temperature sensor 17B is, for example, in contact with the bottom wall of pot inner 21.

[0172] In addition, the cooking utensil 100 further comprises a control device (not shown) for realizing cooking control of the cooking utensil 100. The control device can be a micro control unit (MCU) for example. The control device is electrically connected with the heating device 28 and the temperature sensor, so that the control device can control the heating device 28 according to the detection value of the temperature sensor.

[0173] It should be noted that, in the present application, the directional terms "upper" and "lower" are determined based on the cooking utensil 100 being placed upright and the cover 10 being in the closed state.

[0174] It should be noted that, although the partial structure of the cooking utensil 100 is schematically described herein, these enumerations are exemplary only and cannot be regarded as a limitation on the structure of the cooking utensil 100 of the embodiments of the present application.

[0175] As shown in Figs. 1 and 2, the cover 10 comprises a face cover 13, a backing cover 11 and a detachable cover 12 for example. The backing cover 11 constitutes the framework of the cover 10, and various components (such as the top temperature sensor 17A) in the cover 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 cover 10 can cover the pot body 20. The face cover 13 forms the outer shell of the cover 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 cover 10. The detachable cover 12 is used to cover the pot opening of the inner pot 21. Figure 3 Figure 5 As shown in Figs. 1 and 2, the cover 10 comprises a face cover 13, a backing cover 11 and a detachable cover 12 for example. The backing cover 11 constitutes the framework of the cover 10, and various components (such as the top temperature sensor 17A) in the cover 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 cover 10 can cover the pot body 20. The face cover 13 forms the outer shell of the cover 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 cover 10. The detachable cover 12 is used to cover the pot opening of the inner pot 21.

[0176] The cooking process of the cooking utensil 100 comprises a preheating procedure, a water absorption procedure, a boiling procedure, a boiling maintenance procedure, a braising procedure and a temperature maintenance procedure for example. The preheating procedure is used to preliminarily heat the foodstuff. In the water absorption procedure, the foodstuff is fully water absorbed to improve the taste. In the boiling procedure, the foodstuff is heated to a temperature close to boiling by using high fire, and then is boiled in the boiling maintenance procedure to substantially cook the foodstuff. In the braising 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.

[0177] In order to improve the cooking quality, generally, negative pressure is drawn in the cooking cavity 22 in the water absorption procedure, i.e. the air pressure in the cooking cavity 22 is lower than the ambient air pressure. The negative pressure environment is beneficial to the foodstuff fully absorbing water. In the temperature maintenance procedure, negative pressure is also drawn in the cooking cavity 22, and the negative pressure environment is beneficial to food preservation. In order to improve the cooking efficiency, cold air is blown into the cooking cavity 22 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 relatively high power, which is beneficial to the foodstuff being quickly cooked.

[0178] In order to realize the above functions, please continue to refer to​Figure 6 The cooking appliance 100 further includes an airflow generating device 14 and an air path integrating device 30. The airflow generating device 14, 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. The air path structure 110 can realize steam exhaust, negative pressure extraction, and cold air blowing in the cooking cavity 22.

[0179] The airflow generating device 14 is a component that promotes airflow, such as an air pump. The airflow generating device 14 includes an airflow inlet 15 and an airflow outlet 16. When the airflow generating device 14 is in operation, airflow enters the airflow generating device 14 through the airflow inlet 15 and exits the airflow generating device 14 through the airflow outlet 16. The airflow generating device 14 is, for example, electrically connected to a control device to operate under the control of the control device.

[0180] like Figures 6 to 8 As shown, the gas path integration device 30 has a device shell 38, and the device shell 38 surrounds the device cavity 39. The device shell 38 can be composed of the shells or partial 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 cavity 39 is connected to the external environment through the shell opening 55. The device cavity 39 is provided with a first gas path 111 (see the red arrow air flow path in the figure), a second gas path 112 (see the brown arrow air flow path in the figure), a third gas path 113 (see the blue arrow air flow path in the figure), a fourth gas path 114 (see the green arrow air flow path in the figure) and a fifth gas path 115 (see the purple arrow air flow path in the figure). 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.

[0181] Specifically, the first air path 111 connects the cooking cavity 22 with the air inlet 15, with air flowing from the cooking cavity 22 to the air inlet 15. The second air path 112 connects the air outlet 16 with the housing opening 55, with air flowing from the air outlet 16 to the housing opening 55. The third air path 113 connects the cooking cavity 22 with the housing opening 55, with air flowing from the cooking cavity 22 to the housing opening 55. The fourth air path 114 connects the housing opening 55 with the air inlet 15, with air flowing from the housing opening 55 to the air inlet 15. The fifth air path 115 connects the air outlet 16 with the cooking cavity 22. Thus, the first and second air paths 111 and 112 can create a negative pressure in the cooking cavity 22 when the airflow generating device 14 is in operation. The third air path 113 can exhaust steam from the cooking cavity 22. The fourth and fifth air paths 114 and 115 can blow cool air into the cooking cavity 22 when the airflow generating device 14 is in operation.

[0182] The mode that the first air path 111 and the second air path 112 are conducted is a mode of air extraction of the air path integration device 30 from the cooking cavity 22. The mode that the third air path 113 is conducted is a mode of steam exhaust of the air path integration device 30 for the cooking cavity 22. The mode that the fourth air path 114 and the fifth air path 115 are conducted is a mode of air injection of the air path integration device 30 to the cooking cavity 22.

[0183] The first air path 111, the second air path 112, the fourth air path 114 and the fifth air path 115 are connected with the air flow generating device 14, and the air flow direction thereof is determined by the air flow generating device 14. The first air path 111 and the fourth air path 114 are upstream air paths of the air flow generating device 14. The second air path 112 and the fifth air path 115 are downstream air paths of the air flow generating device 14. The third air path 113 is not connected with the air flow generating device 14, and the air flow direction thereof is determined by the air pressure at both ends of the third air path 113. When the food material is boiled, a large amount of hot steam is generated in the cooking cavity 22, and the air pressure of the steam is higher than the ambient air pressure, so that the air flow flows from the cooking cavity 22 to the housing opening 55.

[0184] It can be seen that the air path integration device 30 is connected with the air flow generating device 14 and the cooking cavity 22, or in other words, the device inner cavity 39 is communicated with the air flow generating device 14 and the cooking cavity 22, and the air path integration device 30 internally integrates the air 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 the assembly easier.

[0185] Preferably, the air path integration device 30 and the air flow generating device 14 are both arranged in the cover body 10, for example, mounted in the cover liner 11. As shown in Figure 4 and Figure 5 The cover liner 11 is provided with a cover liner containing groove 11A for containing the air path integration device 30. The air path integration device 30 is detachably mounted in the cover liner 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 cover liner containing groove 11A.

[0186] For example, as shown in Figures 3 to 6As shown, the lid 10 is provided with an air outlet channel 18 and an air inlet channel 19. When the lid 10 covers the pot body 20, both the air outlet channel 18 and the air inlet channel 19 communicate with the cooking cavity 22. The air path integration device 30 includes an exhaust pipe 56, a third air duct 57, a first air duct 58, and a second air duct 59. The exhaust pipe 56, the third air duct 57, the first air duct 58, and the second air duct 59 all communicate with the device's inner cavity 39. When the air path integration device 30 is installed on the lid 10, the exhaust pipe 56 communicates with the air outlet channel 18, and the second air duct 59 communicates with the air inlet channel 19, thereby connecting the device's inner cavity 39 to the cooking cavity 22. The third air duct 57 communicates with the air inlet 15. The first air duct 58 communicates with the air outlet 16. Here, the connection between the two components can be direct docking or through a conduit, duct, or other pipeline. The ends of the pipelines can also be understood as the interfaces of the components. For example, the interfaces of the cover body 10 and the airflow generating device 14 for connecting with the air path integration device 30 are all set on the bottom wall of the accommodating groove 11A, and the interfaces of the air path integration device 30 are all set on the lower surface of the device shell 38, thereby facilitating the connection of the air path structure 110.

[0187] The first and fourth air paths 111, 114 are upstream of the airflow generating device 14 and can share the third vent pipe 57. Specifically, the third vent pipe 57 is connected to both the first and fourth air paths 111, 114. The third vent pipe 57 is also referred to as a tubular connector. The second and fifth air paths 112, 115 are downstream of the airflow generating device 14 and can share the first vent pipe 58. Specifically, the first vent pipe 58 is connected to both the second and fifth air paths 112, 115.

[0188] like Figure 7 and Figure 8 As shown, the internal cavity 39 of the device may include an air blowing cavity 81, a switching cavity 82, an exhaust and extraction cavity 83, a ventilation cavity 84, and an exhaust cavity 85. The housing openings 55 are provided in the walls of the ventilation cavity 84 and the exhaust cavity 85, but not in the walls of the air blowing cavity 81, the switching cavity 82, and the exhaust and extraction cavity 83. Therefore, the ventilation cavity 84 and the exhaust cavity 85 are always connected to the external environment. The exhaust and extraction cavity 83 is connected to both the exhaust pipe 56 and the third ventilation pipe 57, and thus is always connected to the cooking cavity 22 and the air flow inlet 15. The first ventilation pipe 58 is connected to the switching cavity 82, thereby always connecting to the air flow outlet 16. The air blowing cavity 81 is connected to the second ventilation pipe 59, and thus is always connected to the cooking cavity 22.

[0189] The structure of the gas path integration device 30 on the first gas path 111 includes, in sequence along the gas flow direction, the exhaust pipe 56, the exhaust and suction chamber 83, and the third air pipe 57. The structure of the gas path integration device 30 on the second gas path 112 includes, in sequence along the gas flow direction, the first air pipe 58, the switching chamber 82, and the exhaust chamber 85. The switching chamber 82 and the exhaust chamber 85 are adjacent. The structure of the gas path integration device 30 on the third gas path 113 includes, in sequence along the gas flow direction, the exhaust pipe 56, the exhaust and suction chamber 83, and the air chamber 84. The exhaust and suction chamber 83 and the air chamber 84 are adjacent. The structure of the gas path integration device 30 on the fourth gas path 114 includes, in sequence along the gas flow direction, the air chamber 84, the exhaust and suction chamber 83, and the third air pipe 57. The structure of the gas path integration device 30 on the fifth gas path 115 includes, in sequence along the gas flow direction, the first air pipe 58, the switching chamber 82, the blowing chamber 81, and the second air pipe 59. The switching chamber 82 and the blowing chamber 81 are adjacent.

[0190] The switching chamber 82 and the blowing chamber 81 are collectively referred to as the combined chamber 86. The combined chamber 86 is used to connect the first air pipe 58 and the second air pipe 59. The combined chamber 86 is used to connect the first air pipe 58 and the cooking chamber 22. The combined chamber 86 is used to connect the gas flow outlet 16 and the second air pipe 59. The combined chamber 86 is used to connect the gas flow outlet 16 and the cooking chamber 22.

[0191] In order to make the gas path integration device 30 compact in structure, components are shared among multiple gas paths. In order to make the gas path integration device 30 work in order, multiple valve devices are arranged in the device inner chamber 39 to control the on-off of the gas paths.

[0192] For example, on the second gas path 112, a third opening 43 is arranged on the shared chamber wall 51 (also referred to as the first shared chamber wall 51) between the switching chamber 82 and the exhaust chamber 85. When the third opening 43 is open, the second gas path 112 is conducted. When the second gas path 112 is conducted, the gas path downstream of the gas flow generation device 14 in the gas path for drawing negative pressure for the cooking chamber 22 is conducted. When the third opening 43 is closed, the second gas path 112 is blocked. When the second gas path 112 is blocked, the gas path for drawing negative pressure for the cooking chamber 22 is blocked, specifically, the gas path downstream of the gas flow generation device 14 in the gas path for drawing negative pressure is blocked.

[0193] The second one-way valve 35 in the device inner cavity 39 is used to open and close the third opening 43. When the second one-way valve 35 opens the third opening 43, the second air path 112 is conducted, and allows the air flow to flow unidirectionally from the switching cavity 82 to the exhaust cavity 85 (i.e. allows the air flow to flow unidirectionally from the first air duct 58 to the exhaust cavity 85, allows the air flow to flow unidirectionally from the first air duct 58 to the housing opening 55, allows the air flow to flow unidirectionally from the air flow outlet 16 to the exhaust cavity 85, allows the air flow to flow unidirectionally from the air flow outlet 16 to the housing opening 55). When the second one-way valve 35 is opened, the air path integration device 30 is in the air extraction mode, and an air extraction air path is formed between the exhaust cavity 83, the third air duct 57, the air flow generating device 14, the first air duct 58, the switching cavity 82 and the exhaust cavity 85. When the second one-way valve 35 closes the third opening 43, the second air path 112 is blocked.

[0194] On the fifth air path 115, the second opening 42 is arranged on the common cavity wall 52 (also referred to as the second common cavity wall 52) between the switching cavity 82 and the blowing cavity 81. When the second opening 42 is opened, the fifth air path 115 is conducted. When the fifth air path 115 is conducted, the air path downstream of the air flow generating device 14 in the air path for blowing cold air to the cooking cavity 22 is conducted. When the fifth one-way valve 37 closes the second opening 42, the fifth air path 115 is blocked. When the fifth air path 115 is blocked, the air path downstream of the air flow generating device 14 in the air path for blowing cold air to the cooking cavity 22 is blocked.

[0195] The second opening 42 is located in the air path for connecting the air flow outlet 16 and the cooking cavity 22 in the device inner cavity 39.

[0196] The fifth one-way valve 37 (also known as the floating seal assembly 37 ) in the device's internal cavity 39 is used to open and close the second opening 42. When the fifth one-way valve 37 opens the second opening 42, the fifth air path 115 is open, allowing one-way air flow from the switching chamber 82 to the blowing chamber 81 (i.e., allowing one-way air flow from the first vent pipe 58 to the blowing chamber 81, allowing one-way air flow from the first vent pipe 58 to the second vent pipe 59, allowing one-way air flow from the first vent pipe 58 to the cooking chamber 22, allowing one-way air flow from the air outlet 16 to the blowing chamber 81, allowing one-way air flow from the air outlet 16 to the second vent pipe 59, and allowing one-way air flow from the air outlet 16 to the cooking chamber 22). When the fifth one-way valve 37 closes the second opening 42, the fifth air path 115 is blocked. For example, the floating seal assembly 37 is movable relative to the second opening 42 (i.e., the device's internal cavity 39 or the device housing 38) between a second open position and a second closed position. When the floating seal assembly 37 is in the second open position, it opens the second opening 42, connecting the switching chamber 82 to the blowing chamber 81. A continuous air path is formed between the first vent pipe 58, the switching chamber 82, the blowing chamber 81, and the second vent pipe 59. When the floating seal assembly 37 is in the second closed position, it closes the second opening 42, isolating the switching chamber 82 from the blowing chamber 81. The second opening 42 and the floating seal assembly 37 are both located between the switching chamber 82 and the blowing chamber 81.

[0197] like Figure 7 As shown, the axial direction of the second opening 42 is DA. The floating seal assembly 37 extends through the second opening 42 and is movable in the second opening 42 along the axial direction DA between a second open position and a second closed position. A gap is defined between at least a portion of the floating seal assembly 37 (e.g., the portion of the floating seal assembly 37 that is adapted to move through the second opening 42) and the inner circumferential surface of the second opening 42. When the floating seal assembly 37 is in the second closed position (the position shown in the figure), the floating seal assembly 37 blocks the second opening 42. When the floating seal assembly 37 is in the second open position, the floating seal assembly opens the second opening 42, allowing airflow to flow through the gap between the floating seal assembly 37 and the inner circumferential surface of the second opening 42.

[0198] Further, the cooking appliance 100 is configured to, in the water absorbing process and / or the heat preserving process, make the second air path 112 conductive and the fifth air path 115 blocked; in the boiling maintaining process, make the second air path 112 blocked and the fifth air path 115 conductive. In other words, the cooking appliance 100 is configured to, in the water absorbing process and / or the heat preserving process, make the second one-way valve 35 open the third opening 43 and make the fifth one-way valve 37 close the second opening 42; in the boiling maintaining process, make the second one-way valve 35 close the third opening 43 and make the fifth one-way valve 37 open the second opening 42. Both the second air path 112 and the fifth air path 115 are downstream of the airflow generating device 14 and are used to guide the airflow discharged by the airflow generating device 14. When negative pressure needs to be drawn, the downstream air path for drawing negative pressure is connected to the environment and not connected to the cooking cavity 22; when cold air needs to be blown, the downstream air path for blowing cold air is connected to the cooking cavity 22 and not connected to the environment. Thus, the airflow is orderly and directionally guided to achieve the expected effect. In Figure 7 It can be clearly seen that the downstream air paths (the brown second air path 112 and the purple fifth air path 115) of the airflow generating device 14 are divided in the shared switching cavity 82 after passing through the shared first air duct 58.

[0199] The first air path 111, the third air path 113, and the fourth air path 114 share the exhaust air cavity 83. It can be understood that when negative pressure is drawn for the cooking cavity 22, the exhaust air cavity 83 cannot be connected to the external environment and can only be connected to the cooking cavity 22. When steam is discharged for the cooking cavity 22, the exhaust air cavity 83 needs to be connected to the external environment so that the steam can be discharged to the environment. When cold air is blown for the cooking cavity 22, the exhaust air cavity 83 also needs to be connected to the external environment so that the cold air in the environment can enter the airflow generating device 14. Therefore, the third air path 113 and the fourth air path 114 also share the air duct 84 which is always connected to the environment. The exhaust air cavity 83 is connected to the air duct 84 through the first opening 41, and when the first opening 41 is opened, the exhaust air cavity 83 is connected to the air duct 84. When the first opening 41 is closed, the exhaust air cavity 83 is cut off from the air duct 84.

[0200] The movable partition assembly 36 in the device inner cavity 39 is used to define the exhaust air cavity 83 with a part of the device shell 38. In other words, the movable partition assembly 36 and the device shell 38 respectively provide a part of the cavity wall of the exhaust air cavity 83, and at least one of the movable partition assembly 36 and the device shell 38 is provided with a cavity space for forming the exhaust air cavity 83. For example, the movable partition assembly 36 is movable relative to the device shell 38 (i.e., the device inner cavity 39) between a first open position and a first closed position. When the movable partition assembly 36 is in the first open position, the movable partition assembly 36 is away from the part of the device shell 38 and a first opening 41 is formed between the movable partition assembly 36 and the part of the device shell 38 (see FIG. 5). When the movable partition assembly 36 is in the first closed position, the movable partition assembly 36 is close to the part of the device shell 38 and the first opening 41 is closed (see FIG. 6). Figure 9), that is, the relative movement between different parts of the cavity wall of the exhaust cavity 83 causes the cavity wall to 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.

[0201] 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; in the boiling maintenance process, the first opening 41 is opened, and the exhaust cavity 83 is in communication with the ventilation cavity 84, so that 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; 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; when cold air needs to be blown, ambient cold air can enter the airflow generating device 14. Thus, the airflow is orderly directed to achieve the desired effect.

[0202] Further, the cooking appliance 100 is configured such that when the second gas path 112 is conducted, the first opening 41 is closed, and the fifth gas path 115 is blocked, so that the gas path for extracting negative pressure works normally; when the fifth gas path 115 is conducted, the first opening 41 is opened, so that the gas path for blowing cold air works normally. Therefore, the first opening 41 and the second opening 42 are opened and closed synchronously (or simultaneously). For example, the cooking appliance 100 is configured such that the moving baffle assembly 36 and the floating sealing assembly 37 can interact with each other (both are action components) to realize linkage. For example, when the moving baffle assembly 36 opens the first opening 41, the moving baffle assembly 36 causes the floating sealing assembly 37 to open the second opening 42. In other words, when the moving baffle assembly 36 is in the first open position, the moving baffle assembly 36 abuts the floating sealing assembly 37 to the second open position. For example, when the moving baffle assembly 36 closes the first opening 41, the moving baffle assembly 36 causes the floating sealing assembly 37 to close the second opening 42. For example, when the floating sealing assembly 37 closes the second opening 42, the floating sealing assembly 37 causes the moving baffle assembly 36 to close the first opening 41. Of course, the moving baffle assembly 36 and the floating sealing assembly 37 can also work under the control of the control device, and the synchronous action of the two can be realized by a software program.

[0203] When the first opening 41 is opened, the third air path 113 for discharging steam is also opened. Thus, 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 steam pressure in the cooking cavity 22, or the movable partition assembly 36 opens the first opening 41 under the action of steam pressure in the cooking cavity 22. When the movable partition assembly 36 and the floating sealing assembly 37 are linked, the floating sealing assembly 37 opens the second opening 42 under the action of steam pressure in the cooking cavity 22, or the second opening 42 is opened under the action of steam pressure in the cooking cavity 22. That is, in the process of moving the movable partition assembly 36 from the first closed position to the first open position under the action of steam pressure in the cooking cavity 22, the movable partition assembly 36 contacts the floating sealing assembly 37 in the second closed position, and then forces the floating sealing assembly 37 to move together with the movable partition assembly 36, so as to move the floating sealing assembly 37 to the second open position. 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 movable partition assembly 36 to move, it indicates that a large amount of steam has been generated in the cooking cavity 22, for example, in the maintaining boiling process, at this time, the first opening 41 is opened, which can discharge steam and blow cold air, and exactly meets the needs of preventing overflow in the maintaining boiling process.

[0204] In the present application, the force of the steam top opening the movable partition 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.

[0205] 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, and control the air flow generating device 14 to work after determining to enter the maintaining boiling process. Those skilled in the art can adjust the control software and component parameters through experiments, so that the movable partition 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.

[0206] Furthermore, to simplify control, the cooking appliance 100 is configured such that the second open position is above the second closed position, and the floating seal assembly 37 moves from the second open position to the second closed position by its own weight. Furthermore, the cooking appliance 100 is configured such that the floating seal assembly 37 is located above the movable partition assembly 36, such that the movable partition assembly 36 is located above the first opening 41 (the floating seal assembly 37 and the first opening 41 are located on either side of the movable partition assembly 36 along the axial direction DA). Furthermore, the first open position is located above the first closed position. When the floating seal assembly 37 moves from the second open position to the second closed position by its own weight, its own weight also causes the movable partition assembly 36 to move from the first open position to the first closed position. That is, during the process of moving from the second open position to the second closed position by its own weight, the floating seal assembly 37 contacts the movable partition assembly 36 in the first open position, forcing the movable partition assembly 36 to move along with the floating seal assembly 37, thereby moving the movable partition assembly 36 to the first closed position.

[0207] Furthermore, in order to simplify control, the cooking appliance 100 is constructed so that the second one-way valve 35 opens the third opening 43 under the action of the air pressure in the switching chamber 82 (that is, the air pressure in the first vent pipe 58, that is, the air pressure at the airflow outlet 16, that is, the air pressure in the second air path 112). In other words, the second one-way valve 35 has an open position driven to open by the air pressure in the switching chamber 82. When the air pressure in the switching chamber 82 drops, the second one-way valve 35 closes (is in the closed position). The second one-way valve 35 includes, for example, an elastic component, which is deformed under the action of air pressure to open the third opening 43 and returns to its original shape by its own elasticity to close the third opening 43. Thus, the air path integration device 30 does not need to be connected to an electronic control component, the control is simple, the cost is saved, and the cooking appliance 100 is easy to assemble.

[0208] like Figure 7 As shown, the second one-way valve 35 is constructed as an elastic diaphragm covering the third opening 43. When airflow flows through the switching chamber 82, the airflow deforms the elastic diaphragm, for example, flipping it upward in the figure, exposing the third opening 43, thereby opening the second air path 112. When the airflow pressure is insufficient, the elastic diaphragm recovers due to its own elasticity, re-covering the third opening 43 and blocking the second air path 112.

[0209] It can be understood that the force that elastically deforms the second one-way valve 35 needs to be less than the gravity of the floating sealing assembly 37, so that the air flow blown by the air flow generating device 14 is less resistant at the second one-way valve 35 in the water absorption and / or heat preservation process, so that the air flow tends to flow to the third opening 43. In other words, when the air pressure in the switching cavity 82 is less than the gravity corresponding to the preset weight of the floating sealing assembly 37, the floating sealing assembly 37 is located in the second closed position. Those skilled in the art can determine the power of the air flow generating device 14, the gravity of the floating sealing assembly 37 and the elastic deformation capacity of the second one-way valve 35 through experiments, so that the air flow blown by the air flow generating device 14 can deform the second one-way valve 35, but cannot lift the floating sealing assembly 37, realize the conduction of the second air path 112 and the blockage of the fifth air path 115 when the negative pressure is drawn.

[0210] When the floating sealing assembly 37 opens the second opening 42, the second opening 42 is a passage. The second one-way valve 35 closes the third opening 43, so that the resistance at the third opening 43 is greater than the resistance at the second opening 42. Therefore, when the second opening 42 is opened, the air flow in the switching cavity 82 selects the path with small resistance and flows out of the switching cavity 82 from the second opening 42, but not from the third opening 43. In other words, when the second opening 42 is opened, the second opening 42 makes the switching cavity 82 not a closed cavity, and cannot maintain a high air pressure in the switching cavity 82, so that the air pressure cannot deform the second one-way valve 35.

[0211] The first opening 41, the second opening 42 and the third opening 43 are openings on the respective air paths, and can also be regarded as a small air flow passage.

[0212] Due to the position of the cross section, Figure 7 the cross-sectional view fails to show the complete fifth air path 115, Figure 8 the cross-sectional view fails to show the complete second air path 112.

[0213] The specific exemplary structure of the air path integration device 30 will be introduced below.

[0214] As Figures 10 to 26 shown, the air path integration device 30 has a substantially radial symmetry shape, and its axis PA extends in the upward and downward direction, that is, the axial direction DA of the air path integration device 30 is the upward and downward direction. In the projection along the axial direction DA, the device housing 38 is circular with the axis PA as the center.

[0215] The air path integration device 30 includes a device upper cover 31, an upper partition 32, a lower partition 33, and a device lower cover 34. The device upper cover 31 and the device lower cover 34 form parts of a device housing 38 respectively, and together enclose a device inner cavity 39. The device lower cover 34 is located 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, the third air pipe 57, the first air pipe 58, and the second air pipe 59 all extend from the lower surface of the device lower cover 34.

[0216] The device upper cover 31 is configured as a top hat, for example, and includes an upper cover top wall 31A, an upper cover side wall 31B, and an upper cover annular wall 31C. The upper cover side wall 31B is generally a cylinder extending in the axial direction DA. The upper cover top wall 31A is connected to the upper end of the upper cover side wall 31B, forms a hat top, and constitutes the top wall of the air path integration device 30. The inner peripheral edge of the upper cover annular wall 31C is connected to the outer peripheral surface of the lower end of the upper cover side wall 31B, and extends radially outward from the outer periphery of the upper cover side wall 31B, forming a hat brim. 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 air path 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 peripheral edge of the upper cover annular wall 31C is located above the periphery of the opening at the upper end of the lower cover side wall 34B.

[0217] The upper partition 32 and the lower partition 33 are both arranged in the device inner cavity 39, to divide the device inner cavity 39 into multiple cavities.

[0218] The lower partition 33 is configured as a disc, for example, and its outer peripheral edge is connected to the inner peripheral surface of the lower cover side wall 34B. The lower partition 33 is connected to the device lower cover 34, for example, by a third rotary buckle 94C (see Figure 11 and Figure 14 ). The upper partition 32 is located above the lower partition 33.

[0219] The upper end of the upper partition 32 abuts against the upper cover top wall 31A, and the lower end abuts against the lower partition 33. The upper partition 32 is configured as a double-layer structure, and both the upper layer and the lower layer are generally circular grooves with the axial direction DA as the axis. The upper layer groove and the lower layer groove share a groove bottom, and thus the opening directions of the two grooves are opposite. Specifically, the upper partition 32 includes a partition plate 32A, an upper groove side wall 32B, and a lower groove side wall 32C. The partition plate 32A extends, for example, in the horizontal direction, and forms the groove bottom of the upper layer groove and the lower layer groove. The upper groove side wall 32B is, for example, a cylinder extending in the axial direction DA, and is connected to the upper surface of the partition plate 32A, so that the upper layer groove opens upward. The upper end of the upper groove side wall 32B abuts against the upper cover top wall 31A. The lower groove side wall 32C is, for example, also a cylinder extending in the axial direction DA, and is connected to the lower surface of the partition plate 32A, so that the lower layer groove opens downward. The lower end of the lower groove side wall 32C abuts against the lower partition 33. The lower groove side wall 32C and the lower partition 33 are connected, for example, by the second rotation buckle 94B (see Figure 14 ).

[0220] The radial dimension of the upper groove side wall 32B is smaller than the radial dimension of the lower groove side wall 32C. The radial dimension of the upper groove side wall 32B is smaller than the radial dimension of the partition plate 32A. The radial dimension of the lower groove side wall 32C is the same as the radial dimension of the partition plate 32A. The upper groove side wall 32B, the lower groove side wall 32C, and the partition plate 32A are connected to the center, so that the partition plate 32A as a whole forms the groove bottom of the lower layer groove, and the middle part of the partition plate 32A forms the groove bottom of the upper layer groove. That is, the groove bottom of the lower layer groove includes the groove bottom of the upper layer groove, and the groove bottom of the upper layer groove is the middle part of the groove bottom of the lower layer groove.

[0221] Referring to Figure 7 , the opening of the upper layer groove of the upper partition 32 is covered by the upper cover top wall 31A, and the space of the upper layer groove forms the air blowing cavity 81. That is, the upper cover top wall 31A, the partition plate 32A, and the upper groove side wall 32B enclose the air blowing cavity 81. Among them, the upper cover top wall 31A forms the top wall of the air blowing cavity 81, the partition plate 32A forms the bottom wall of the air blowing cavity 81, and the upper groove side wall 32B forms the side wall of the air blowing cavity 81. The air blowing cavity 81 is generally cylindrical in shape.

[0222] The opening of the lower layer groove of the upper partition 32 is covered by the lower partition 33, and the space of the lower layer groove forms the switching cavity 82. That is, the lower partition 33, the partition plate 32A, and the lower groove side wall 32C enclose the switching cavity 82. Among them, the partition plate 32A forms the top wall of the switching cavity 82, the lower partition 33 forms the bottom wall of the switching cavity 82, and the lower groove side wall 32C forms the side wall of the switching cavity 82. The switching cavity 82 is generally cylindrical in shape.

[0223] The upper lid side wall 31B is located outside the upper partition 32. The upper portion of the upper lid side wall 31B is located above the partition 32A. The lower portion of the upper lid side wall 31B is located below the partition 32A and outside the lower tank side wall 32C. The lower portion of the upper lid side wall 31B is connected to the lower tank side wall 32C, for example, by a third rotational snap 94C (see FIG. 9B). Figure 11 and Figure 14 ). Due to the upper tank of the upper partition 32 being thinner than the lower tank, there is an annular space between the upper tank side wall 32B and the upper lid side wall 31B, which forms the exhaust cavity 85. That is, the exhaust cavity 85 is substantially enclosed by the outer portion of the upper lid top wall 31A (the portion outside the air blowing cavity 81), the outer portion of the partition 32A (the portion outside the air blowing cavity 81), the upper tank side wall 32B and the upper portion of the upper lid side wall 31B. Among them, the outer portion of the upper lid top wall 31A forms the top wall of the exhaust cavity 85, the outer portion of the partition 32A forms the bottom wall of the exhaust cavity 85, the upper tank side wall 32B forms the outer side wall of the exhaust cavity 85, and the upper lid side wall 31B forms the inner side wall of the exhaust cavity 85.

[0224] It can be understood that the bottom wall of the upper tank of the upper partition 32, that is, the middle portion of the partition 32A, is a second common cavity wall 52 shared by the air blowing cavity 81 and the switching cavity 82. The second opening 42 is provided on the second common cavity wall 52. The outer portion of the partition 32A is a first common cavity wall 51 shared by the exhaust cavity 85 and the switching cavity 82. The third opening 43 is provided on the first common cavity wall 51. In other words, the partition 32A includes the second common cavity wall 52 and the first common cavity wall 51 connected in the radial direction, and the first common cavity wall 51 is located outside the second common cavity wall 52. The upper tank side wall 32B is connected to the boundary between the first common cavity wall 51 and the second common cavity wall 52. Since the first common cavity wall 51 is annular, multiple third openings 43 and second one-way valves 35 can be provided.

[0225] The space between the lower partition 33 and the device lower cover 34 forms the exhaust cavity 83 and the ventilation cavity 84. Specifically, referring to Figure 15 and Figure 16 , the lower cover bottom wall 34A is provided with an annular wall 83B extending in the axial direction DA, the annular wall 83B is located in the device inner cavity 39, the inner side space of the annular wall 83B is used to form at least part of the exhaust cavity 83, and the outer side space of the annular wall 83B is used to form the ventilation cavity 84. The middle portion 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 portion 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 lower partition 33 forms the top wall of the ventilation cavity 84.

[0226] The annular wall 83B has two ends oppositely arranged along the axial direction DA, one of which is connected to the bottom wall 83A of the exhaust cavity. The annular wall 83B is connected to the junction between the middle portion and the outer peripheral portion of the bottom wall 34A of the lower cover. The lower partition 33 is located above the annular wall 83B. The lower partition 33 and the bottom wall 34A of the lower cover are respectively located on both sides of the annular wall 83B along the axial direction DA. The movable partition assembly 36 is arranged on the lower partition 33, and the movable partition assembly 36 and the bottom wall 34A of the lower cover 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 and a first closed position. When the movable partition assembly 36 is located at the first open position, the movable partition assembly 36 and the end of the annular wall 83B not connected to the bottom wall 83A of the exhaust cavity form a first opening 41. Thus, the ventilation cavity 84 is located at the outer periphery of the annular wall 83B and surrounds the first opening 41. When the movable partition assembly 36 is located at the first closed position, the movable partition assembly 36 contacts the end of the annular wall 83B not connected to the bottom wall 83A of the exhaust cavity, forming at least a 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. The exhaust cavity 83 can also be understood as a section of airflow passage, and the first opening 41 can be understood as an opening of the section of airflow passage.

[0227] An exhaust port 83C is arranged on the cavity wall of the exhaust cavity 83, and the exhaust port 83C is connected to the exhaust pipe 56, so that the exhaust cavity 83 is in communication with the cooking cavity 22. An exhaust inlet 83D is arranged on the cavity wall of the exhaust cavity 83, and the exhaust inlet 83D is connected to the third ventilation pipe 57, so that the exhaust cavity 83 is in communication with the airflow inlet 15. The exhaust port 83C and the exhaust inlet 83D are preferably arranged on the same cavity wall of the exhaust cavity 83, for example, both are arranged on the exhaust cavity bottom wall 83A. Thus, the bottom wall 34A of the lower cover, the third ventilation pipe 57 and the exhaust pipe 56 can be integrally formed.

[0228] The housing opening 55 is arranged on the device upper cover 31. For example, referring to Figure 12 , the housing opening 55 includes a first housing opening 55A arranged on the annular wall 31C. Referring to Figure 24 , the lower partition 33 is provided with a ventilation hole 33A near the edge. Referring to Figure 7 , the ventilation hole 33A and the first housing opening 55A are arranged along the axial direction DA. The ventilation cavity 84 is communicated to the first housing opening 55A through the ventilation hole 33A, so as to be in communication with the environment. Referring to Figure 10 and Figure 11 , the housing opening 55 further includes a second housing opening 55B arranged on the upper portion of the upper cover side wall 31B, and the second housing opening 55B is used to communicate the exhaust cavity 85 with the environment. Referring to Figure 1When the gas path integration device 30 is mounted to the cover 10, the device upper cover 31 protrudes, for example, from the upper surface of the face cover 13, facilitating the first housing aperture 55A and the second housing aperture 55B to communicate with the environment.

[0229] The first vent pipe 58 is provided on the lower partition 33. The first vent pipe 58 extends in the axial direction DA in the device inner cavity 39, passes through the vent cavity 84, and exits from the through hole 34C on the lower cover bottom wall 34A. The first vent pipe 58 can be integrally formed with the lower partition 33. The second vent pipe 59 is provided on the middle portion of the partition 32A (see Figure 8 ), that is, the bottom wall of the blowing cavity 81. The second vent pipe extends in the axial direction DA in the device inner cavity 39, passes through the switching cavity 82 and the vent cavity 84, and exits from the through hole 34D on the lower cover bottom wall 34A. The lower partition 33 is provided with a through hole 33D (see Figure 24 ) for the second vent pipe 59 to pass through. Both the first vent pipe 58 and the second vent pipe 59 are located outside the annular wall 83B, so as not to affect the gas path function of the pumping and exhausting cavity 83.

[0230] As mentioned above, the upper partition 32 is connected with the lower partition 33 by the second rotating buckle 94B, that is, the two need to be relatively rotated, and the second vent pipe 59 needs to pass through the lower partition 33, so the second vent pipe 59 cannot be integrally formed with the upper partition 32. The second vent pipe 59 is detachably connected with the partition 32A. As shown in Figure 8 , the partition 32A is provided with a partition connecting portion 32D for detachable connection with the second vent pipe 59. The partition connecting portion 32D is configured, for example, as an internally threaded pipe (or hole) extending in the axial direction DA, and the outer periphery of the second vent pipe 59 is provided with external threads, for example, for screwing connection with the partition connecting portion 32D. When the upper partition 32 and the lower partition 33 are buckled in place, the partition connecting portion 32D is aligned with the through hole 33D of the lower partition 33.

[0231] When assembling the gas path integration device 30, the second one-way valve 35 and the floating sealing assembly 37 are first mounted to the partition 32A, and the moving partition assembly 36 is mounted to the lower partition 33. Then the upper partition 32 and the lower partition 33 are screwed and buckled. Next, the second vent pipe 59 is mounted to the partition connecting portion 32D. Finally, the device lower cover 34 is screwed and buckled with the lower partition 33, and the device upper cover 31 is screwed and buckled with the upper partition 32.

[0232] In order not to affect the functions of the various cavities in the device inner cavity 39, a plurality of sealing members are further provided in the device inner cavity. In order to ensure that the pumping and exhausting cavity 83 and the vent cavity 84 are not communicated in the pumping negative pressure mode, the first sealing member 91A is provided between the moving partition assembly 36 and the device housing 38. The first sealing member 91A is, for example, a sealing ring, which is, for example, straddled on the end of the annular wall 83B (see Figure 9). A second seal 91B is also provided between the lower groove side wall 32C of the upper partition 32 and the edge of the lower partition 33 for sealing the switching cavity 82. Meanwhile, the upper cover side wall 31B is close to the lower groove side wall 32C, so that the second seal 91B is also connected between the upper cover side wall 31B and the edge of the lower partition 33. Thus, the second seal 91B is used for sealing between the exhaust cavity 85, the switching cavity 82 and the ventilation cavity 84. A third seal 91C is provided between the upper groove side wall 32B of the upper partition 32 and the upper cover top wall 31A for sealing between the blowing cavity 81 and the exhaust cavity 85. The third seal 91C is, for example, a sealing ring, which is, for example, straddled on the end of the upper groove side wall 32B (see Figure 8 In order not to affect the gas path function of the switching cavity 82, a fourth seal 91D is provided at the through hole 33D of the lower partition 33 for sealing contact between the second ventilation tube 59 and the through hole 33D, so that the switching cavity 82 is not communicated with the ventilation cavity 84. A fifth seal 91E is provided in the through hole 32E of the partition connecting portion 32D, so that the second ventilation tube 59 is sealingly connected with the partition connecting portion 32D for sealing between the blowing cavity 81 and the switching cavity 82.

[0233] The ventilation cavity 84 is used to communicate with the environment, so the through holes 34C and 34D do not need to be sealed. It can be understood that when the device lower cover 34 is screwed and engaged with the lower partition 33, the first ventilation tube 58 has been located in the through hole 34C, and the second ventilation tube 59 has been located in the through hole 34D. The through holes 34C and 34D reserve enough space for the corresponding gas tubes to move therein. As shown in Figure 13 The through holes 34C and 34D are both long holes, and when the device lower cover 34 just contacts the lower partition 33 in the axial direction DA, the two gas tubes are located at one end of the corresponding long hole (such as the black marked position in the figure), and after the device lower cover 34 is screwed and engaged with the lower partition 33 (such as the red arrow direction in the figure), the two gas tubes are located at the other end of the corresponding long hole (such as the blue marked position in the figure).

[0234] As shown in Figure 14 and Figures 18 to 20 The second one-way valve 35, the floating sealing assembly 37, the upper partition 32 and the third seal 91C can be pre-assembled to form an upper partition pre-assembled assembly 53. As shown in Figure 14 and Figures 21 to 23 The moving partition assembly 36 and the lower partition 33 can be pre-assembled to form a lower partition pre-assembled assembly 54. The upper partition pre-assembled assembly 53 and the lower partition pre-assembled assembly 54 are connected through the second rotation buckle 94B. After the upper partition pre-assembled assembly 53 and the lower partition pre-assembled assembly 54 are connected, the upper cover 31 is connected with the upper partition pre-assembled assembly 53 through the first rotation buckle 94A, and the lower cover 34 is connected with the lower partition pre-assembled assembly 54 through the third rotation buckle 94C.

[0235] The structure and installation of the mobile partition assembly 36 are described below.

[0236] Referring to Figure 24 , the lower partition 33 is provided with an installation site 33B for installing the mobile partition assembly 36, and the installation site 33B includes an installation through hole 33C. The mobile partition assembly 36 is arranged through the installation through hole 33C. The installation through hole 33C is, for example, a circular hole. The axial direction of the first opening 41 is parallel to the axial direction of the installation through hole 33C, and both are the axial direction DA. As shown in Figure 9 , the first opening 41 is spaced apart from the installation through hole 33C along the axial direction DA. The mobile partition assembly 36 is connected to the installation through hole 33C and is movable relative to the installation through hole 33C along the axial direction DA between the first open position and the first closed position.

[0237] As shown in Figures 7 to 9 and Figures 27 to 29 , the mobile partition assembly 36 includes a telescopic member 61, a mobile partition 64, and a pressing ring 65.

[0238] The telescopic member 61 is connected to the periphery of the installation through hole 33C and is telescopic in the axial direction DA of the installation through hole 33C between the first open position and the first closed position. The mobile partition 64 defines an exhaust cavity 83 with part of the device housing 38. The mobile partition 64 is arranged through the installation through hole 33C and is connected to the telescopic member 61 to move synchronously with the telescopic member 61 between the first open position and the first closed position. Thus, the opening and closing of the first opening 41 is realized by the movement of the mobile partition 64.

[0239] The telescopic member 61 has, for example, a radial symmetry structure, including a telescopic member outer peripheral portion 61A and a telescopic member intermediate portion 61B, and the telescopic member outer peripheral portion 61A is connected to the telescopic member intermediate portion 61B at the outer periphery of the telescopic member intermediate portion 61B. The telescopic member outer peripheral portion 61A is in the form of a circular ring and is used to connect to the periphery of the installation through hole 33C. The telescopic member intermediate portion 61B is configured to extend through the installation through hole 33C and is movable relative to the telescopic member outer peripheral portion 61A in the axial direction DA of the installation through hole 33C between the first open position and the first closed position in the installation through hole 33C.

[0240] The mobile partition 64 is connected to the side of the telescopic member intermediate portion 61B facing the first opening 41 and moves synchronously with the telescopic member intermediate portion 61B between the first open position and the first closed position. In the first embodiment, the mobile partition 64 moves from the first closed position (see Figure 25 ) to the first open position (see Figure 26The middle part 61B of the telescopic member is moved from the first open position to the first close position under the action of the floating seal assembly 37, thereby moving the movable partition 64 from the first open position to the first close position.

[0241] The main part of the pressing ring 65 is a pressing ring 67, which is configured as a circular ring and matches the shape of the outer peripheral part 61A of the telescopic member, and is used to contact the outer peripheral part 61A of the telescopic member so that the outer peripheral part 61A of the telescopic member is clamped between the pressing ring 67 and the mounting site 33B, that is, the outer peripheral part 61A of the telescopic member is pressed around the mouth of the mounting through hole 33C. Thus, the position of the outer peripheral part 61A of the telescopic member is fixed, that is, the relative position of the outer peripheral part 61A of the telescopic member and the first opening 41 is fixed. The outer peripheral part 61A of the telescopic member can move in the axial direction DA in the central through hole of the pressing ring 67. The pressing ring 65 further includes a pressing ring connecting part 66, which is used to connect the mounting site 33B, for example, detachably connect the mounting site 33B. For example, the pressing ring connecting part 66 is arranged on the radially outer side of the inner peripheral surface of the pressing ring 67 and is connected to the mounting site 33B by a bolt. The telescopic member 61 is connected to the side of the mounting through hole 33C away from the first opening 41, thereby facilitating the installation of the pressing ring 65.

[0242] The telescopic member 61 is preferably made of elastic material. It can be understood that, since the outer peripheral part 61A of the telescopic member is connected around the mouth of the mounting through hole 33C, the telescopic member 61 can seal the mounting through hole 33C, thereby isolating the switching cavity 82 from the ventilation cavity 84 and isolating the switching cavity 82 from the exhaust cavity 83. The middle part 61B of the telescopic member 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 elastic material, the pleated structure 61C can be stretched and reset. When the pleated structure 61C is stretched, the middle part 61B of the telescopic member moves away from the outer peripheral part 61A of the telescopic member in the axial direction DA, thereby moving the movable partition 64 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 reset, the middle part 61B of the telescopic member moves toward the outer peripheral part 61A of the telescopic member in the axial direction DA, thereby moving the movable partition 64 toward the first opening 41 in the axial direction DA, so as to close the first opening 41.

[0243] The movable partition 64 may include a partition connection portion 64B and a partition flange 64A. The partition connection portion 64B extends in the axial direction DA, with the end of the partition connection portion 64B facing away from the first opening 41 connected to the side of the telescopic member intermediate portion 61B facing the first opening 41. The partition flange 64A is disposed on the outer periphery of the partition connection portion 64B and is used to contact the device housing 38, thereby opening and closing the first opening 41. The outer diameter of the partition flange 64A is no less than the diameter of the first opening 41. The partition connection portion 64B extends through the mounting hole 33C and is movable in the axial direction DA relative to the mounting hole 33C between a first open position and a first closed position.

[0244] The bulkhead connecting portion 64B can have a smaller radial dimension to save material. Accordingly, the mounting hole 33C, the telescopic member 61, and the pressure ring 65 can all have smaller dimensions. The bulkhead flange 64A can have a radial dimension larger than the diameter of the mounting hole 33C, so that the bulkhead flange 64A is always located on the side of the mounting hole 33C facing the first opening 41, that is, the bulkhead flange 64A is always located in the ventilation cavity 84. The bulkhead flange 64A is connected to the end of the bulkhead connecting portion 64B in the axial direction DA, thereby reducing the dimension of the bulkhead connecting portion 64B in the axial direction DA.

[0245] Preferably, the telescopic member middle portion 61B is detachably connected to the movable partition 64. The movable partition 64 (specifically, the partition connecting portion 64B) is provided with a partition flange 64H, and the telescopic member middle portion 61B is tightly fitted with the partition flange 64H. For example, the outer peripheral surface of the movable partition 64 is constructed with a radially outward annular partition flange 64H extending circumferentially, and the inner peripheral surface of the telescopic member middle portion 61B on one side facing the first opening 41 is constructed with a second groove 61H extending circumferentially, and the notch and groove bottom of the second groove 61H are relative in the radial direction DR for accommodating the annular flange 64H. The movable partition 64 is, for example, made of a hard material (plastic, metal, etc.), and the elasticity of the telescopic member 61 can be utilized to make the partition flange 64H tightly fitted with the partition flange 64H. For example, the inner circumferential surface of the telescopic member intermediate portion 61B on the side facing the first opening 41 is configured with a radially inwardly extending annular protrusion 61E. The outer circumferential surface of the partition flange 64H is configured with a first groove 64E extending circumferentially. The notch and bottom of the first groove 64E are opposed in the radial direction DR and are configured to accommodate the annular protrusion 61E. The movable partition 64 can utilize the elasticity of the telescopic member 61 to squeeze the telescopic member 61, causing it to deform, so that the annular protrusion 61E can enter the first groove 64E.

[0246] 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, for example, as an annular rib, and can be located inside the annular wall 83B.

[0247] 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 lower 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 moving partition 64 is provided with at least one guide hole 64D for accommodating the guide post 48. The guide post 48 is arranged correspondingly with the guide hole 64D, and the guide post 48 is movable in the axial direction DA in the guide hole 64D. Thus, the guide post 48 and the guide hole 64D enable the moving 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. As shown in Figure 24 As shown in Figure 25 and Figure 26 As shown in

[0248] As shown in Figure 27 The partition flange plate 64A is also provided with a through hole 64F for the first air vent pipe 58 to pass through and a through hole 64G for the second air vent pipe 59 to pass through. The first air vent pipe 58 and the second air vent pipe 59 also have a guiding effect on the movement of the moving partition 64. From Figure 24 It can be seen that the guide post 48, the first air vent pipe 58 and the second air vent pipe 59 are generally distributed on the same circle with the axis PA as the center.

[0249] As mentioned above, the steam exhaust third air path 113 and the cold air blowing fourth air path 114 of the cooking appliance 100 are simultaneously conducted, that is, the steam exhaust and the cold air blowing are simultaneously performed, and the two air paths share the exhaust air cavity 83 and the air vent cavity 84. In the exhaust air cavity 83 and the air vent cavity 84, the airflow direction of the third air path 113 and the fourth air path 114 is opposite and the airflow temperature is different.

[0250] In order to make the hot steam that needs to move along the third air path 113 as little as possible to enter the fourth air path 114, as Figure 15 and Figure 16As shown, the bottom wall 83A of the exhaust chamber is further provided with a first barrier 45, located between the exhaust port 83D and the exhaust port 83C. The first barrier 45 protrudes from the bottom wall 83A toward the interior of the exhaust chamber 83, somewhat blocking air flow between the exhaust port 83D and the exhaust port 83C. In other words, the first barrier 45 divides the exhaust chamber 83 into a steam exhaust side 83E and a cold air connection side 83F. As will be appreciated, the exhaust port 83C is located on the steam exhaust side 83E, while the exhaust port 83D is located on the cold air connection side 83F.

[0251] Furthermore, a second barrier 49 is provided in the ventilation cavity 84. The lower side of the second barrier 49 is connected to the lower cover bottom wall 34A and the lower cover side wall 34B, and its upper edge conforms to the bottom shape of the lower divider 33, thereby roughly dividing the ventilation cavity 84 into two. Preferably, the second barrier 49 is located in the extension direction of the first barrier 45, that is, on the extension line of the first barrier 45, and together with the first barrier 45, it serves to separate the cold and hot air flows. Due to the radial arrangement of the exhaust cavity 83 and the ventilation cavity 84, two second barriers 49 are provided in the ventilation cavity 84, corresponding to the two side edges 46 of the first barrier 45 and extending on the extension line of the first barrier 45.

[0252] like Figure 7 As shown, after hot steam enters the exhaust chamber 83 from the exhaust pipe 56 along the blue 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 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.

[0253] like Figures 15 to 17As shown, preferably, the width direction spaced two side edges 46 of the first barrier 45 are connected to the annular wall 83B to more fully block the suction port 83D and the exhaust port 83C. Preferably, the width direction middle portion 47 of the first barrier 45 protrudes from the annular wall 83B toward the moving baffle assembly 36 in the axial direction DA to more fully block the suction port 83D and the exhaust port 83C. The baffle connecting portion 64B of the moving baffle assembly 36 includes a receiving slot 64C (see Figure 28 ) having an opening facing the first opening 41 for receiving the middle portion 47 of the first barrier 45. In this way, the middle portion 47 of the first barrier 45 can have a certain height to facilitate the isolation of the hot steam and the ambient cold air. To accommodate the shape of the mounting through hole 33C, the baffle connecting portion 64B is generally cylindrical in shape, and thus the receiving slot 64C is a circular slot. To extend the effective length of the middle portion 47 of the first barrier 45, the middle portion 47 of the first barrier 45 includes an arc-shaped plate having an arc axis generally coinciding with the axis of the annular wall 83B. The arc 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 third air pipe 57, and the device lower cover 34 can be integrally formed.

[0254] It can be understood that the receiving slot 64C is also part of the cavity space of the suction and exhaust cavity 83.

[0255] Preferably, the axis of the exhaust port 83C generally coincides with the axis of the annular wall 83B, so that the steam can uniformly act on the moving baffle 64. Preferably, the diameter of the exhaust port 83C is greater than the diameter of the suction port 83D, which facilitates the steam to quickly enter the suction and exhaust cavity 83 and occupy the third air path 113.

[0256] When the mobile partition assembly 36 is in the first open position, the air path integration device 30 is in a blowing mode of blowing air into the cooking cavity 22, the housing opening 55, the air passage cavity 84, the first opening 41, the air exhaust cavity 83 (specifically, the cold air communication side 83F), the third air passage tube 57, the airflow generating device 14, the first air passage tube 58, the combined cavity 86, and the second air passage tube 59 can form an internal blowing air path (an air path of blowing cold air into the cooking space 22) in communication. Among them, the housing opening 55, the air passage cavity 84, the first opening 41, and the cold air communication side 83F form a cold air inlet air path in communication. The air in the external environment enters the airflow generating device 14 through the air exhaust cavity 84, the tubular connecting portion 57, and the airflow inlet 15. At the same time, the air path integration device 30 is also in an exhaust mode, and the exhaust pipe 56, the steam exhaust side 83E, the first opening 41, the air passage cavity 84, and the housing opening 55 form a steam exhaust air path. When the mobile partition assembly 36 is in the first closed position, the air path integration device 30 is in a suction mode of sucking air into the cooking cavity 22, and the air exhaust cavity 83 is separated from the air passage cavity 84. The exhaust pipe 56, the air exhaust cavity 83, the third air passage tube 57, the airflow generating device 14, the first air passage tube 58, and the combined cavity 86 (specifically, the switching cavity 82) can form an external suction air path (an air path of sucking negative pressure into the cooking space 22) in communication. The gas in the cooking cavity 22 enters the airflow generating device 14 through the exhaust pipe 56, the air exhaust cavity 83, the tubular connecting portion 57, and the airflow inlet 15.

[0257] In the present application, preferably, the axes of the device upper cover 31, the upper partition 32, the lower partition 33, the device lower cover 34, the mounting through hole 33C, the mobile partition assembly 36, and the annular wall 83B are all the axis PA of the air path integration device 30.

[0258] 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 peripheral portion are not in the same plane, for example, wherein the middle portion is recessed downward relative to the outer peripheral portion, for example, the annular wall 83B constitutes part of the outer surface of the device housing 38.

[0259] In some embodiments not shown in the present application, the cavity space of the air exhaust cavity 83 is completely provided by the mobile partition assembly 36. For example, the lower cover 34 does not provide the annular wall 83B, the reinforcing ribs 69 of the mobile partition 64 of the mobile partition assembly 36 form the side wall of the air exhaust cavity 83, the accommodation 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.

[0260] The structure and installation method of the floating sealing assembly 37 are described below.

[0261] As described above, the floating sealing assembly 37 extends through the second opening 42. As shown in FIG. 4, the floating sealing assembly 37 is arranged on the second opening 42 of the device housing 38.Figures 30 to 32 As shown, the floating seal assembly 37 includes a floating member 71 and a blocking member 75. The floating member 71 is configured to extend through the second opening 42 and is movable in the axial direction DA in the second opening 42. The floating member 71 includes a floating member first end portion 71A and a floating member second end portion 71B disposed opposite to each other in the axial direction DA. The floating member first end portion 71A extends out of the second opening 42. There is a gap between at least a portion of the floating member 71 and the inner circumferential surface of the second opening 42. The blocking member 75 is connected to the floating member first end portion 71A and is configured to block the second opening 42 at one end of the second opening 42. For example, the blocking member 75 has a radial dimension greater than that of the second opening 42, so that the blocking member 75 closes the second opening 42 by covering the second opening 42. At the same time, the blocking member 75 also allows the floating member 71 to have a limit position when moving toward the side of the floating member second end portion 71B.

[0262] The blocking member 75 is preferably made of an elastic material. The blocking member 75 can also be understood as a sealing member. The blocking member 75 is configured as an elastic diaphragm, for example, which covers the second opening 42 at one end (one side) of the second opening 42. The elastic diaphragm is provided with a diaphragm mounting hole 76 through which the floating member first end portion 71A passes, so that the elastic diaphragm is sleeved on the outer periphery of the floating member first end portion 71A. For example, the outer periphery of the floating member first end portion 71A is provided with a first mounting groove 71E extending in the circumferential direction, which is configured to accommodate the portion of the elastic diaphragm located around the mouth of the diaphragm mounting hole 76, i.e., to clamp the elastic diaphragm in the first mounting groove 71E.

[0263] The floating member second end portion 71B also extends out of the second opening. The floating seal assembly 37 further includes a limiting member 77 connected to the floating member second end portion 71B, and the limiting member 77 has a radial dimension greater than that of the second opening 42. Thus, the limiting member 77 allows the floating member 71 to have a limit position when moving toward the side of the floating member first end portion 71A. The limiting member 77 is sleeved on the outer periphery of the floating member second end portion 71B, for example. The limiting member 77 can be configured as a limiting ring made of an elastic material, for example. The outer periphery of the floating member second end portion 71B is provided with a second mounting groove 71F extending in the circumferential direction, for example, which is configured to accommodate the limiting member 77, i.e., to clamp the limiting member in the second mounting groove 71F.

[0264] The float member 71 further includes a float member connecting portion 71C between the float member first end portion 71A and the float member second end portion 71B. The float member connecting portion 71C extends through the second opening 42 and is movable in the axial direction DA between the second open position and the second closed position in the second opening 42. The float member connecting portion 71C has a gap with the inner peripheral surface of the second opening 42. For example, when the stopper member 75 contacts the peripheral edge of one side of the second opening 42, the float seal assembly 37 is in the second closed position. When the stopper member 75 is away from the partition 32A, the float seal assembly 37 is in the second open position. In the second open position, the float member connecting portion 71C is in the second opening 42 with a gap with the inner wall of the second opening 42, so that the airflow can flow through the gap and the fifth air passage 115 is conducted.

[0265] For example, the radial dimension of the float member connecting portion 71C is smaller than the radial dimension of the second opening 42, so that the float member connecting portion 71C is in a clearance fit with the second opening 42. The radial dimension of the float member connecting portion 71C is 0.1 mm to 10 mm smaller than the radial dimension of the second opening 42. More preferably, the radial dimension of the float member connecting portion 71C is 0.2 mm to 2 mm smaller than the radial dimension of the second opening 42. Alternatively, the outer peripheral surface of the float member connecting portion 71C can be provided with at least one third groove extending in the axial direction DA, so that the float member connecting portion 71C has a gap with the inner peripheral surface of the second opening 42.

[0266] In the first embodiment, the axial direction DA is the up-down direction, the float member first end portion 71A is above the float member second end portion 71B, the float member first end portion 71A is above the second opening 42, and the float member second end portion 71B is below the second opening 42. The float member second end portion 71B is used to receive the action of the moving partition assembly 36 to move upward from the second closed position to the second open position. The float seal assembly 37 moves downward from the second open position to the second closed position by its own gravity. The mass (preset weight) of the float seal assembly 37 is, for example, 1 g to 50 g. More preferably, the mass of the float seal assembly 37 is, for example, 5 g to 20 g.

[0267] As mentioned above, the preset weight of the floating seal assembly 37 needs to be adapted to the deformation capacity of the second one-way valve 35. It can be understood that when the steam lifts the movable partition assembly 36, the steam overcomes the weight of the movable partition 64, the weight of the floating seal assembly 37 and the deformation force of the elastic member 61, so that the movable partition 64 is separated from the first seal 91 A on the annular wall 83B. When the steam pressure is not enough to overcome the weight of the movable partition 64, the weight of the floating seal assembly 37 and the deformation force of the elastic member 61, the movable partition 64 is attached to the first seal 91 A, so that the cooking cavity 22 has a certain pressure (for example, 3kPa to 4kPa). Therefore, the weight of the floating seal assembly 37 can be adapted to the micro-pressure of the cooking cavity 22. For example, the floating seal assembly 37 further comprises a counterweight 78 arranged at the first end 71 A of the floating member and above the blocking member 75. The total weight of the floating seal assembly 37 can be adjusted by adjusting the weight of the counterweight 78.

[0268] The force applied by the steam to the movable partition assembly 36 is related to the effective area of the movable partition 64. The effective area of the movable partition 64 is the area of the part exposed to the exhaust cavity 83, or the area of the movable partition 64 that can be contacted by the steam when the movable partition assembly 36 is in the first closed position. When the movable partition assembly 36 is in the first closed position, the area of the movable partition 64 that can be contacted by the steam is the area of the movable partition 64 inside the annular wall 83B. Preferably, the inner diameter of the annular wall 83B is 10mm to 100mm, more preferably 10mm to 50mm, more preferably 10mm to 40mm or 15mm to 50mm, more preferably 20mm to 30mm. The size of the first seal 91 A matches the diameter of the annular wall 83B.

[0269] The first vent pipe 58 is located outside the annular wall 83B, and the distance from the center point of the first vent pipe 58 to the center line point (axis PA) of the annular wall 83B is, for example, 17.5mm to 60mm, preferably 22.5mm to 35mm.

[0270] The second vent pipe 59 is located outside the annular wall 83B, and the distance from the center point of the second vent pipe 59 to the center line point (axis PA) of the annular wall 83B is, for example, 12.5mm to 55mm, preferably 17.5mm to 30mm.

[0271] The following describes other embodiments of the present application, and the same contents as the first embodiment will not be described again.

[0272] In Figure 33In the second embodiment shown, the second one-way valve 35 is configured as a gravity ball. The axial direction of the third opening 43 is the up-down direction, and the gravity ball is seated in the third opening 43 by its own gravity to close the third opening 43, and can be lifted by the airflow of the airflow generating device 14 to open the third opening 43.

[0273] In Figure 34 In the third embodiment shown, the second one-way valve 35 is configured as a pneumatic float. The axial direction of the third opening 43 is the up-down direction, and the pneumatic float is seated in the third opening 43 by its own gravity to close the third opening 43, and can be lifted by the airflow of the airflow generating device 14 to open the third opening 43.

[0274] Of course, the air path integration device 30 can also be configured in other forms to integrate the air paths for suctioning negative pressure, discharging steam, and blowing cold air.

[0275] The processes and steps described in all of the preferred embodiments described above are merely examples. Unless adverse effects occur, various processing operations can be performed in a different order from the order of the processes described above. The order of the steps of the processes described above can also be added, combined, or deleted as needed.

[0276] 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 foregoing also applies to like- meaning terms such as "comprising," "having," "including," and their derivatives, and their derivatives.

[0277] The term "attached" or "attach" as 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 in turn is 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," "engaged," "fixed," "bonded," "secured," and their derivatives. Finally, the degree terms such as "substantially," "approximately," and "about" as used herein mean an amount of deviation that does not significantly change the end result.

[0278] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The features described in one embodiment can be applied to another embodiment, mutatis mutandis, unless that embodiment is inherently incompatible with the other embodiment.

[0279] The application has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and illustration, and are not intended to limit the application to the scope of the described embodiments. Furthermore, those skilled in the art can understand that the application is not limited to the above embodiments, and more various modifications and changes can be made according to the teachings of the application, which all fall within the scope of the application claimed.

Claims

1. An air path integration device for a cooking appliance, wherein the cooking appliance has a cooking cavity for holding food, and further comprises an air flow generating device, wherein the air flow generating device has an air flow inlet and an air flow outlet, wherein: The gas path integration device comprises: a device housing, the device housing surrounding the device inner cavity; an insufflation cavity, which is a part of the inner cavity of the device; a second ventilation pipe, used for connecting the cooking cavity and the blowing cavity; A switching chamber, the switching chamber is located below the blowing chamber and is a part of the inner chamber of the device; a first vent pipe, configured to connect the airflow outlet with the switching chamber; and a floating seal assembly, the floating seal assembly being floatably disposed between the switching chamber and the blowing chamber, and having a second open position for connecting the two chambers and a second closed position for isolating the two chambers, the second open position being located above the second closed position; The floating seal assembly has a preset weight. When the air pressure in the switching chamber is less than the gravity corresponding to the preset weight, the floating seal assembly is located at the second closed position.

2. The gas path integration device according to claim 1, characterized in that: The floating seal assembly is configured to move from the second closed position to the second open position by relying on an external force, and to move from the second open position to the second closed position under the action of its own weight.

3. The gas path integration device according to claim 2, characterized in that: The inner cavity of the device is also used to communicate with the cooking cavity, and the external force is the pressure of the steam in the cooking cavity.

4. The gas path integration device according to claim 2, characterized in that: The blowing chamber and the switching chamber have a common second common chamber wall, and the second common chamber wall is provided with a second opening. When the floating seal assembly is located in the second closed position, the floating seal assembly closes the second opening; when the floating seal assembly is located in the second open position, the floating seal assembly opens the second opening.

5. The gas path integration device according to claim 4, characterized in that: The axis of the second opening extends in the up-down direction. The floating seal assembly is disposed through the second opening and is movable in the second opening between the second open position and the second closed position.

6. The gas path integration device according to claim 5, characterized in that: The floating seal assembly comprises: a floating member extending through the second opening, the floating member movable between the second closed position and the second open position, the floating member comprising a first floating member end portion and a second floating member end portion disposed opposite to each other in an up-down direction, the first floating member end portion being located above the second floating member end portion, the first floating member end portion extending out of the second opening and located above the second opening, the second floating member end portion being adapted to receive the external force, a gap being defined between at least a portion of the floating member and an inner peripheral surface of the second opening; and A blocking member is connected to the first end of the floating member. When the floating member is located at the second closed position, the blocking member blocks the second opening at the upper end of the second opening. When the floating member is located at the second open position, the blocking member is located above the second opening and away from the second opening.

7. The gas path integration device according to claim 6, characterized in that: The floating seal assembly further includes a counterweight component, which is arranged at the first end of the floating component and located above the blocking component.

8. The gas path integration device according to claim 6, characterized in that: The second end portion of the floating member is located below the second opening.

9. The gas path integration device according to claim 8, characterized in that: The floating seal assembly further includes a limiting member connected to the second end portion of the floating member, and a radial dimension of the limiting member is greater than a radial dimension of the second opening.

10. The gas path integration device according to claim 8, characterized in that: The floating member further includes a floating member connecting portion located between the first end portion of the floating member and the second end portion of the floating member, the floating member connecting portion extending through the second opening and movable up and down in the second opening, and a gap being formed between the floating member connecting portion and the inner circumferential surface of the second opening.

11. The gas path integration device according to claim 10, characterized in that: An outer peripheral surface of the floating member connecting portion is provided with at least one third groove extending in the axial direction, so that a gap is formed between the floating member connecting portion and an inner peripheral surface of the second opening.

12. The gas path integration device according to claim 10, characterized in that: The radial dimension of the floating member connecting portion is smaller than the radial dimension of the second opening, and the floating member connecting portion is loosely matched with the second opening.

13. The gas path integration device according to claim 1, characterized in that: The preset weight of the floating seal assembly is 1g to 50g.

14. The gas path integration device according to claim 13, characterized in that: The preset weight of the floating seal assembly is 5g to 20g.

15. The gas path integration device according to any one of claims 1 to 14, characterized in that: The device housing is provided with a shell opening, and the inner cavity of the device is connected to the external environment through the shell opening. A second one-way valve is provided on the cavity wall of the switching cavity. The second one-way valve has an open position driven to open by the air pressure in the switching cavity. When the second one-way valve is located at the open position, the switching cavity is connected to the housing opening.

16. The gas path integration device according to claim 15, characterized in that: The second one-way valve includes an elastic component, and the elastic component is configured to be deformed to open under the action of the air pressure in the switching chamber and to be restored to close by its own elasticity; or A third opening is provided on the cavity wall of the switching cavity. The second one-way valve is used to open and close the third opening. The axial direction of the third opening is up and down. The second one-way valve is constructed as a gravity ball or a pneumatic float.

17. The gas path integration device according to claim 15, characterized in that: The gas path integration device also includes: an exhaust cavity, which is a part of the inner cavity of the device and is used to communicate with the cooking cavity; and The third ventilation pipe is used to connect the exhaust cavity and the air flow inlet.

18. The gas path integration device according to claim 17, characterized in that: The air path integration device is configured to change the on-off state of the exhaust cavity and the housing opening, and when the exhaust cavity is connected to the housing opening, the floating sealing assembly is located in the second open position.

19. A cooking utensil, characterized in that: include: A cooking cavity for holding food; An airflow generating device, the airflow generating device having an airflow inlet and an airflow outlet; and The air path integration device according to any one of claims 1 to 18, wherein the first vent pipe connects the air flow outlet and the switching chamber, and the second vent pipe connects the cooking chamber and the blowing chamber.

20. The cooking appliance according to claim 19, wherein The cooking appliance further comprises: a pot body, wherein the pot body is provided with the cooking cavity; and The cover body is used to cover the pot body. The cover body is provided with the air path integration device and the air flow generating device. When the cover body covers the pot body, the second ventilation pipe connects the blowing cavity and the cooking cavity.

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