WO2020062948A1

WO2020062948A1 - Pot lid assembly of cooking utensil and cooking appliance

Info

Publication number: WO2020062948A1
Application number: PCT/CN2019/091486
Authority: WO
Inventors: 吴育权; 朱传斌; 何国达; 赵策; 罗飞龙; 瞿月红; 袁伟; 陈伟; 江小勇; 陈显怀; 罗鑫
Original assignee: 佛山市顺德区美的电热电器制造有限公司
Priority date: 2018-09-30
Filing date: 2019-06-17
Publication date: 2020-04-02
Also published as: CN209153231U; JP2021530275A; JP7038866B2

Abstract

A pot lid assembly (100) of a cooking appliance, and a cooking appliance. The pot cover assembly (100) comprises: an inner lid (10); an exhaust box (20), which defines a cavity (201) having an opening at the top, and an exhaust hole (22) at the bottom wall; and an exhaust box cover (30). An opening is provided at the top of a closed cavity of the exhaust box cover (30); a first positioning column (21) is provided on the exhaust box (20) and defines an airflow channel (211); an exit of the airflow channel (211) is communicated with the cavity (201), and an entry of the airflow channel (211) is adapted to be communicated with a gas extraction apparatus; the exhaust box cover (30) has a first positioning hole (31).

Description

Lid assembly for cooking appliance and cooking appliance

Cross-reference to related applications

This application is based on a Chinese patent application with an application number of 201821623848.X and an application date of September 30, 2018, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is incorporated herein by reference.

Technical field

The present application relates to the technical field of household electrical appliances, and in particular, to a pot lid assembly and a cooking appliance of a cooking appliance.

Background technique

In the related art rice cooker, in order to suppress the proliferation of bacteria and prevent the rice from deteriorating, an air extraction device is usually added to the rice cooker to form a negative pressure state for the air extraction in the cooking cavity to achieve the above effect. However, in the process of the air extraction device, the extracted steam will be sprayed directly between the inner cover and the outer cover, and the user can hear a very large airflow sound, which will reduce the experience and adversely affect the product; at the same time, there will be a certain amount of The condensed water is ejected with the gas, and the condensed water enters the upper cover assembly, which will affect the reliability and safety of the circuit system, further affect the user experience, and there is room for improvement.

Summary of the Invention

This application aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the present application is to propose a pot lid assembly for a cooking appliance, which has a simple structure and low exhaust noise.

The application also proposes a cooking appliance having the pot lid assembly.

A pot lid assembly of a cooking appliance according to an embodiment of the first aspect of the present application includes: an inner lid; an exhaust box body fixed to the inner lid and defining a cavity with an open top, the row The bottom wall of the air box body has an exhaust hole communicating with the chamber; an exhaust box cover, the exhaust box cover is installed on the top of the exhaust box body to close the top opening of the chamber, wherein A first positioning column is provided on the exhaust box body, and the first positioning column defines an airflow channel, an outlet of the airflow channel is communicated with the chamber, and an inlet of the airflow channel is suitable for exhausting air. The device is in communication, and the exhaust box cover has a first positioning hole adapted to the first positioning post.

According to the pot lid assembly of the cooking appliance according to the embodiment of the present application, an exhaust box is provided at one end of the air extraction device, so that the air extraction device can discharge the extracted gas into the chamber first, so that the steam can be smoothly released, thereby reducing Noise; and the chamber can collect condensed water and discharge it through specific exhaust holes to prevent its flow to the periphery of the circuit system to affect its reliability and safety; at the same time, the first positioning hole of the exhaust box cover and the The cooperation of the first positioning column simplifies the structure, saves space, facilitates installation and fixation, and improves the safety and reliability of the cooperation, and has a good user experience.

According to the pot lid assembly of the cooking appliance according to the embodiment of the present application, a top of the exhaust box body outside the top opening has a supporting platform, and the first positioning post is disposed on the supporting platform.

According to the pot lid assembly of the cooking appliance according to the embodiment of the present application, the inner lid is provided with a second positioning post spaced from the first positioning post, and the exhaust box cover has a suitable position for the second positioning post. Matching second positioning hole.

In some embodiments, the air extraction device includes a vacuum pump for drawing a cooking cavity of the cooking appliance to a negative pressure, the vacuum pump is installed on the inner cover and an inlet of the vacuum pump is adapted to communicate with an air suction hole The outlet of the vacuum pump is in communication with the inlet of the airflow channel.

In some embodiments, at least a part of the vacuum pump is mounted on the exhaust box cover, and the vacuum pump has a fitting hole adapted to the second positioning post.

According to the pot lid assembly of the cooking appliance according to the embodiment of the present application, the exhaust box body is disposed adjacent to a frame of the inner cover, the frame of the inner cover has a convex protrusion, and the exhaust box cover has a direction toward the inner cover An elastic buckle that extends from the frame and cooperates with the convex projection.

According to the pot lid assembly of the cooking appliance according to the embodiment of the present application, a side of the exhaust box cover facing the exhaust box body is provided with an annular groove, and a sealing ring is provided in the annular groove, and the row The air box cover is hermetically connected to the exhaust box body through the seal ring.

According to a pot lid assembly of a cooking appliance according to an embodiment of the present application, one of the exhaust box body and the exhaust box cover is provided with a rib extending toward the chamber, the airflow channel and the exhaust gas. The projection of the hole on the bottom wall of the exhaust box body is located on both sides of the rib; and / or, the inner surface of the bottom wall of the exhaust box body has a guide slope, and the guide slope is opposite to the row The air holes extend obliquely downward from far to near; and / or, a plurality of spaced-apart protrusions are provided on a side of the exhaust box cover facing the chamber.

According to a pot lid assembly of a cooking appliance according to an embodiment of the present application, the pot lid assembly is adapted to be pivotably connected to a pot body of the cooking appliance, and the first positioning post is adjacent to the pivot of the pot lid assembly Axis, and the exhaust hole is located at a position farthest from the first positioning post in the bottom wall of the exhaust box body.

The cooking appliance according to the embodiment of the second aspect of the present application includes the pot cover assembly of the cooking appliance according to the embodiment of the first aspect of the present application. By adopting the above-mentioned cover assembly, the noise of the suction device during operation is reduced, and condensed water is avoided. The gas ejection affects the safety performance of the cooking utensils. At the same time, the exhaust box has a simple structure, takes up less space, is easy to install and fix, and is easy to install and disassemble. The user experience is good.

Additional aspects and advantages of the present application will be given in part in the following description, part of which will become apparent from the following description, or be learned through practice of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

1 is a schematic structural diagram of a pot lid assembly according to an embodiment of the present application;

2 is a cross-sectional view taken along the A-A section in FIG. 1;

3 is an enlarged view of a B structure in FIG. 2;

4 is an exploded view of a pot lid assembly according to an embodiment of the present application;

5 is a schematic structural diagram of an inner cover according to an embodiment of the present application;

6 is a plan view of an inner cover according to an embodiment of the present application;

7 is a schematic structural diagram of an inner cover according to another embodiment of the present application;

8 is a schematic structural view of an exhaust box cover according to an embodiment of the present application from a perspective;

9 is a schematic structural view of an exhaust box cover according to an embodiment of the present application from another perspective;

FIG. 10 is a schematic structural view of an exhaust box cover according to another embodiment of the present application at a viewing angle.

Reference signs:

Lid assembly 100,

Inner cover 10, second positioning post 11, snap projection 12, pivot axis 13,

Exhaust box 20, chamber 201, first positioning column 21, air flow channel 211, exhaust hole 22, support platform 23, rib 24,

Exhaust box cover 30, first positioning hole 31, second positioning hole 32, elastic buckle 33, annular groove 34, protrusion 35, inclined cover plate 36,

Sealing ring 40,

Vacuum pump 50, mating hole 51, exhaust pipe 52,

线 Socket box 60.

detailed description

Hereinafter, embodiments of the present application will be described in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present application, and should not be construed as limiting the present application.

In the description of this application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Rear "," left "," right "," vertical "," horizontal "," top "," bottom "," inside "," outside "," clockwise "," counterclockwise "," axial ", The directions or positional relationships indicated by "radial" and "circumferential" are based on the positional or positional relationships shown in the drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying the device or element referred to. It must have a specific orientation and be constructed and operated in a specific orientation, so it cannot be understood as a limitation on this application. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, "multiple" means two or more.

In the description of this application, it should be noted that the terms "installation", "connected", and "connected" should be understood in a broad sense unless explicitly stated and limited otherwise. For example, they may be fixed connections or removable. Connected or integrated; it can be mechanical or electrical; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood in specific situations.

The pot cover assembly 100 of a cooking appliance according to an embodiment of the present application is described below with reference to FIGS. 1 to 10.

As shown in FIG. 1 to FIG. 10, a pot lid assembly 100 of a cooking appliance according to an embodiment of the present application includes an inner cover 10, an exhaust box body 20, and an exhaust box cover 30.

The exhaust box body 20 is fixed on the inner cover 10, and the exhaust box body 20 defines a cavity 201 with an open top. The bottom wall of the exhaust box body 20 has an exhaust hole 22, and the exhaust hole 22 is connected to the chamber 201. The exhaust box cover 30 is installed on the top of the exhaust box body 20, so that the top opening of the chamber 201 can be closed. The exhaust box body 20 is provided with a first positioning post 21, and the first positioning post 21 defines The airflow channel 211 is connected with the outlet of the airflow channel 211 and the chamber 201. The inlet of the airflow channel 211 is suitable for communication with the air extraction device. The exhaust box cover 30 has a first positioning hole 31 adapted to the first positioning column 21. By inserting the first positioning post 21 into the first positioning hole 31, the exhaust box cover 30 is installed and positioned, which facilitates the cooperation between the exhaust box cover 30 and the exhaust box body 20.

According to the pot lid assembly 100 of the cooking appliance according to the embodiment of the present application, the exhaust box body 20 is provided at one end of the air extraction device, so that the air extraction device can discharge the extracted gas into the chamber 201 first, so that the steam can be gently released. Therefore, the noise is reduced; and the chamber 201 can collect condensed water and discharge it through a specific exhaust hole 22 to prevent it from flowing to the periphery of the circuit system to affect its reliability and safety; meanwhile, the first of the exhaust box cover 30 The positioning hole cooperates with the first positioning post 21 having the airflow channel 211, which simplifies the structure, saves space, facilitates installation and fixing, and improves the safety and reliability of the cooperation, and has a good user experience.

As shown in FIG. 3, according to an embodiment of the present application, the top of the exhaust box body 20 outside the top opening has a support platform 23. The first positioning post 21 is disposed on the support platform 23. An opening for conducting the airflow channel 211 in the first positioning column 21. The airflow channel 211 communicates with the chamber 201 through the opening, thereby facilitating the discharge of the gas extracted by the air extraction device into the chamber 201 through the airflow channel 211. It plays a buffering role to the air flow, and at the same time, the supporting platform 23 ensures the structural stability of the first positioning column 21 and facilitates the stable connection of the exhaust box body 20 and the exhaust box cover 30.

As shown in FIG. 4, according to an embodiment of the present application, the inner cover 10 is provided with a second positioning post 11, the second positioning post 11 is spaced from the first positioning post 21, and the exhaust box cover 30 has a second positioning hole 32. The second positioning hole 32 is adapted to the second positioning column 11, that is, the second positioning hole 32 is spaced from the first positioning hole 31. The first positioning column 21 on the exhaust box body 20 is inserted into the first positioning hole. In the hole 31, at the same time, the second positioning post 22 on the inner cover 10 is inserted into the first positioning hole 31, so that the exhaust box cover 30 can be firmly fixed on the exhaust box 20, which further improves the structural stability.

In some examples, the air extraction device includes a vacuum pump 50, which is used to draw a negative pressure from the cooking cavity of the cooking appliance, the vacuum pump 50 is installed in the inner cover 10, and the inlet of the vacuum pump 50 is adapted to be connected to the air suction hole (not shown in the figure) (Out) communication, the outlet of the vacuum pump 50 communicates with the inlet of the airflow channel 211, so that the chamber 201 is connected between the outlet of the vacuum pump 50 and the exhaust hole 22, and an exhaust box 20 and an exhaust cover 30 form a relative The closed chamber, so that the gas pumped by the vacuum pump 50 is discharged into the relatively closed chamber 201 through the airflow channel 211. The chamber 201 buffers the airflow, so that the air pressure can be released gently, which reduces the working process of the vacuum pump 50. The noise.

As shown in FIGS. 1-3, in some examples, at least a part of the vacuum pump 50 is mounted on the exhaust box cover 30, and the vacuum pump 50 has a fitting hole 51 adapted to the second positioning post 11, that is, through the second positioning The column 11 is inserted into the matching hole 51 to realize the fixation of the vacuum pump 50 on the inner cover 10. The exhaust box cover 30 and the vacuum pump 50 share the same second positioning column 11 to save the occupied space. At the same time, the exhaust box cover 30 The other end shares the same first positioning post 21 with the exhaust of the vacuum pump 50, which further reduces the number of parts required for installation and fixation, and improves assembly efficiency.

As shown in FIG. 3, in some specific examples, a part of the vacuum pump 50 is fixed on the upper surface of the exhaust box cover 30, and a part of the upper surface of the exhaust box cover 30 near the vacuum pump 50 forms a horizontal plane to avoid the vacuum pump 50 from being evacuated. Effect, the other part of the exhaust box cover 30 forms an inclined cover plate 36, which extends from the vacuum pump 50 farther to nearer and gradually downwards. By providing the inclined cover plate 36, the exhaust box cover can be increased The strength of 30 also expands the capacity of the chamber 201 in the exhaust box, thereby ensuring that the high-pressure gas can gently release the pressure in the chamber 201 and further reduce the noise.

As shown in FIG. 1, according to an embodiment of the present application, the exhaust box body 20 is disposed adjacent to a frame of the inner cover 10. The frame of the inner cover 10 has a convex protrusion 12, the exhaust box cover 30 has an elastic buckle 33, and an elastic card. The buckle 33 extends toward the frame of the inner cover 10, and the elastic buckle 33 is suitable for matching with the convex projection 12. The fixing method of the convex projection 12 and the elastic buckle 33 is adopted to ensure the reliability of the connection, and the installation is simple and the elastic buckle The pressing force of 33 can better ensure that the exhaust box cover 30 is compressed, and ensure that the exhaust box cover 30 and the exhaust box body 20 achieve the purpose of sealing connection.

Further, the exhaust box body 20 is located on the rear side of the inner cover 10, in order to use the space of the inner cover 10 reasonably to facilitate the exhaust of the exhaust holes; the exhaust box body 20 and the wire socket box 60 in the inner cover 10 are respectively located Both sides of the centerline of the inner cover 10 effectively prevent steam from contacting the terminals in the wire socket box 60 and ensure the safety of electricity use.

As shown in FIG. 9, according to an embodiment of the present application, a side of the exhaust box cover 30 facing the exhaust box body 20 is provided with an annular groove 34, a sealing ring 40 is provided in the annular groove 34, and the exhaust box The cover 30 is hermetically connected to the exhaust box body 20 through the sealing ring 40, so as to ensure that a relatively closed space is formed in the chamber 201, and to ensure that the air does not flow from the exhaust box cover 30 and the exhaust box body when the air flows into the chamber 201 The gap between 20 flows out, generating additional noise, affecting the user experience.

In some specific examples, the exhaust box body 20 is integrally formed with the inner cover 10, that is, the bottom wall of the exhaust box body 20 is the inner cover 10, and the elastic buckle 33 on the exhaust box body 20 is on the inner cover 10. The latching protrusion 12 is matched and fixed. At this time, the pressing force of the elastic buckle 33 can better ensure that the sealing ring 40 is pressed, and the sealing reliability is further improved.

According to an embodiment of the present application, one of the exhaust box body 20 and the exhaust box cover 30 is provided with a rib 24 extending toward the inside of the cavity 201, and the airflow passage 211 and the exhaust hole 22 are formed in the exhaust box body 20. The projections on the bottom wall are located on both sides of the ribs 24. By providing the ribs 24 in the cavity 201, the flow velocity of the steam entering the cavity 201 can be buffered; meanwhile, the air flow passage 211 and the exhaust hole 22 are limited to the ribs 24 Both sides increase the steam flow path, further slowing down the speed of steam pressure release, and reducing noise; in addition, the rib 24 structure can also play a certain role in absorbing noise, further reducing noise and improving user experience.

In some specific examples, a gap is provided between the rib 24 and the bottom wall of the exhaust box body 20, so that after the steam forms condensed water, the condensed water can flow through the gap to the exhaust hole 22 and be discharged.

According to an embodiment of the present application, the pot lid assembly 100 is adapted to be pivotably connected to the pot body of the cooking appliance, the first positioning post 21 is adjacent to the pivot axis 13 of the pot lid assembly 100, and the exhaust hole 22 is located in the row The bottom wall of the air box body 20 is located farthest from the first positioning column 21, that is, the exhaust hole 22 is disposed near the user's button to open the cover, so as to ensure that when the user opens the upper cover, steam is formed by condensation. The condensed water does not directly flow out from the exhaust hole 22, which prevents the condensed water from flowing out of the chamber 201 from affecting the user experience when the cover is opened.

According to an embodiment of the present application, the inner surface of the bottom wall of the exhaust box body 20 has a guide inclined surface, and the guide inclined surface extends gradually downward from far to near with respect to the exhaust hole 22, so that the steam condenses after it forms condensed water. Water can flow to the exhaust holes 22 to facilitate the drainage of condensed water.

Further, the exhaust hole 22 is formed like a trumpet shape, that is, the horizontal cross-sectional size of the exhaust hole 22 is gradually reduced along the direction from top to bottom, in order to reduce the tension of the water when the condensed water is discharged, and to facilitate the water conduction. Role, while increasing the strength of the structure, to avoid deformation and prolonged use after a long time to affect subsequent exhaust and drainage.

According to an embodiment of the present application, the side of the exhaust box cover 30 facing the cavity 201 is provided with a plurality of spaced-apart protrusions 35. The protrusions 35 can absorb noise to a certain extent, further reducing noise and improving user experience.

The cooking appliance according to the embodiment of the present application includes the pot cover assembly 100 of the cooking appliance according to the embodiment of the present application. By adopting the pot cover assembly 100 described above, the noise during the operation of the air extraction device is reduced, and the condensed water is prevented from being ejected with the gas. Affects the safety performance of cooking appliances, at the same time, the exhaust box has a simple structure, takes up less space, is convenient to install and fix, is easy to install and remove, and has a good user experience.

According to an embodiment of the present application, the cooking appliance is a rice cooker. A specific embodiment of the rice cooker according to the present application is described below with reference to FIGS. 1 to 4 and FIGS. 8 and 10.

The rice cooker includes a pot body, a pot cover assembly 100, and an air extraction device. The pot body defines a cooking cavity with an open top. The pot cover assembly 100 is pivotably connected to the pot body along a pivot axis 13. The pot cover assembly 100 includes an inner cover. 10. The exhaust box body 20 and the exhaust box cover 30.

The exhaust box body 20 extends in the front-rear direction. The exhaust box body 20 is fixed to the rear side of the inner cover 10 and is disposed adjacent to the frame of the inner cover 10. The exhaust box body 20 and the wire socket box 60 in the inner cover 10 are located in the inside respectively. On both sides of the centerline of the cover 10, the exhaust box body 20 and the inner cover 10 are integrally formed during manufacture.

The exhaust box body 20 defines a cavity 201 with an open top. The bottom wall of the exhaust box body 20 has an exhaust hole 22, which is in communication with the chamber 201. The exhaust hole 22 is located away from the pivot axis 13 At one end, the exhaust hole 22 is shaped like a horn, that is, the horizontal cross-sectional size of the exhaust hole 22 gradually decreases from top to bottom. The inner surface of the bottom wall of the exhaust box body 20 has a guide slope, and the guide slope is opposite. The exhaust hole 22 extends obliquely downward from far to near.

The exhaust box body 20 has a support platform 23 on the top outside the top opening. The support platform 23 is provided with a first positioning post 21. The first positioning post 21 defines an air flow channel 211. The support platform 23 has a first positioning position. An opening for conducting the airflow channel 211 in the column 21, and the airflow channel 211 is communicated with the chamber 201 through the opening.

The bottom wall of the exhaust box body 20 is provided with a rib 24 extending toward the inside of the chamber 201. There is a gap between the rib 24 and the bottom wall of the exhaust box body 20. The air flow channel 211 and the exhaust hole 22 are in the exhaust box. The projections on the bottom wall of the body 20 are located on both sides of the rib 24.

The exhaust box cover 30 is installed on the top of the exhaust box body 20. The exhaust box cover 30 can close the top opening of the chamber 201. The exhaust box cover 30 has a first positioning hole 31 and a second positioning hole 32. The holes 31 and the second positioning holes 32 are arranged at intervals. The first positioning holes 31 are matched with the first positioning columns 21. The inner cover 10 is provided with the second positioning columns 11, and the second positioning columns 11 correspond to the first positioning columns 21. Spacedly arranged, the second positioning hole 32 is adapted to the second positioning column 11, the frame of the inner cover 10 has a convex protrusion 12, the exhaust box cover 30 has an elastic buckle 33, and the elastic buckle 33 extends toward the frame of the inner cover 10. By inserting the first positioning post 21 in the first positioning hole 31 and the second positioning post 11 in the second positioning hole 32, the elastic buckle 33 is engaged with the projection 12 to realize the exhaust box cover 30 included The cover 10 is fixedly mounted.

An annular groove 34 is provided on the lower side of the exhaust box cover 30, and a seal ring 40 is provided in the annular groove 34 to facilitate the sealing connection between the exhaust box cover 30 and the exhaust box body 20. The side surface is provided with a plurality of protrusions 35 arranged at intervals, so as to absorb the noise in the cavity 201 to a certain extent.

The air extraction device includes a vacuum pump 50. The vacuum pump 50 is used to draw a negative pressure into the cooking cavity. The inlet of the vacuum pump 50 is adapted to communicate with the air extraction hole of the lid assembly 100. The outlet of the vacuum pump 50 communicates with the airflow channel 211 through the exhaust pipe 52.

A part of the vacuum pump 50 is fixed on the upper surface of the exhaust box cover 30. A part of the upper surface of the exhaust box cover 30 near the vacuum pump 50 forms a horizontal plane. The other part of the exhaust box cover 30 forms an inclined cover plate 36. The inclined cover plate 36 is opposite to the vacuum pump. 50 gradually extends downward from far to near, and the vacuum pump 50 has a fitting hole 51 adapted to the second positioning post 11. The second positioning post 11 is inserted into the fitting hole 51 to fix the vacuum pump 50.

By adopting the above-mentioned pot cover assembly 100, the noise of the vacuum pump 50 during operation is reduced, and the safety performance of the rice cooker is prevented from being sprayed by the condensed water with the gas. At the same time, the structure is simple, multiple structures share the same fixed structure, occupy less space, and are convenient to install and fix , Easy to load and unload, good user experience.

Other components and operations of the cooking appliance according to the embodiments of the present application are known to those skilled in the art, and will not be described in detail here.

In the description of this specification, the description with reference to the terms “one embodiment”, “some embodiments”, “exemplary embodiments”, “examples”, “specific examples”, or “some examples”, etc., means in combination with the implementation The specific features, structures, materials, or characteristics described in the examples or examples are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, The scope of the application is defined by the claims and their equivalents.

Claims

A pot lid assembly for a cooking appliance, comprising:

Inner cover

An exhaust box body, which is fixed to the inner cover and defines a chamber with an open top, and a bottom wall of the exhaust box body has an exhaust hole communicating with the chamber;

An exhaust box cover that is mounted on the top of the exhaust box body to close the top opening of the chamber,

Wherein, the exhaust box body is provided with a first positioning column and the first positioning column defines an airflow channel, an outlet of the airflow channel is in communication with the chamber, and an inlet of the airflow channel is suitable for pumping. The air device is in communication, and the exhaust box cover has a first positioning hole adapted to the first positioning post.
The lid assembly for a cooking appliance according to claim 1, wherein a top of the exhaust box body outside the top opening has a support platform, and the first positioning post is provided on the support platform on.
The pot lid assembly for a cooking appliance according to claim 1 or 2, wherein the inner lid is provided with a second positioning post spaced from the first positioning post, and the exhaust box cover has a A second positioning hole adapted to the second positioning post.
The pot lid assembly of a cooking appliance according to claim 3, wherein the air extraction device comprises a vacuum pump for drawing a cooking chamber of the cooking appliance to a negative pressure, and the vacuum pump is installed on the inner cover In addition, the inlet of the vacuum pump is adapted to communicate with the air suction hole, and the outlet of the vacuum pump is communicated with the inlet of the air flow channel.
The pot lid assembly for a cooking appliance according to claim 4, wherein at least a part of the vacuum pump is mounted on the exhaust box cover, and the vacuum pump has a matching fit with the second positioning post hole.
The pot cover assembly for a cooking appliance according to any one of claims 1-5, wherein the exhaust box body is disposed adjacent to a frame of the inner cover, and the frame of the inner cover has a convex projection, so The exhaust box cover has an elastic buckle extending toward a frame of the inner cover and mating with the latching protrusion.
The pot lid assembly for a cooking appliance according to any one of claims 1-6, wherein a side of the exhaust box cover facing the exhaust box body is provided with an annular groove, and the annular A seal ring is provided in the groove, and the exhaust box cover is hermetically connected to the exhaust box body through the seal ring.
The pot cover assembly for a cooking appliance according to any one of claims 1 to 7, wherein one of the exhaust box body and the exhaust box cover is provided with a stopper extending toward the chamber. Ribs, the projections of the airflow channels and the exhaust holes on the bottom wall of the exhaust box body are located on both sides of the rib; and / or,

The inner surface of the bottom wall of the exhaust box body has a guide inclined surface, and the guide inclined surface extends gradually downward from far to near with respect to the exhaust hole; and / or,

A plurality of spaced apart protrusions are provided on a side of the exhaust box cover facing the chamber.
The pot lid assembly for a cooking appliance according to any one of claims 1 to 8, wherein the pot lid assembly is adapted to be pivotably connected to a pot body of the cooking appliance, and the first The positioning post is adjacent to the pivot axis of the lid assembly, and the exhaust hole is located at a position farthest from the first positioning post in the bottom wall of the exhaust box body.
A cooking appliance, comprising a lid assembly of the cooking appliance according to any one of claims 1-9.