Cooking appliance

Abstract

A cooking appliance, comprising: a cooking cavity; an air extraction cavity, with a first communication channel provided between the cooking cavity and the air extraction cavity so that the gas in the cooking cavity can be extracted through the air extraction cavity; an air extraction device, the suction port of the air extraction device being in communication with the air extraction cavity; a float, movably arranged in the first communication channel, the float having an air extraction position for communicating the air extraction cavity with the cooking cavity and a sealing position for disconnecting the air extraction cavity from the cooking cavity, in the non-operating state of the cooking appliance, the float being in the air extraction position; a float drive mechanism, driving the float to move from the air extraction position to the sealing position, the float moving to the air extraction position under the action of its own gravity; a one-way mechanism, enabling the gas in the air extraction cavity to be discharged to the outside through the one-way mechanism and preventing the outside atmosphere from entering the air extraction cavity through the one-way mechanism. Applying the technical solution of the present invention can effectively solve the problem of poor user experience of cooking appliances in the prior art.

Description

Technical Field

[0001] The present invention relates to a cooking appliance, and more particularly, to an improvement of a lid of a cooking appliance. Background Art

[0002] At present, electric pressure cookers and rice cookers have become essential small household appliances in the kitchen. Electric pressure cookers and rice cookers on the market all have reservation and heat preservation functions. In summer, the outside temperature is high. When making a long-term reservation or heat preservation, foods such as rice and broth are often spoiled, resulting in poor user experience. Currently, methods such as air extraction and freezing are usually used for preservation. The electric pressure cooker with a preservation function includes a pot body and a lid covering the pot body. The lid includes a face cover, a lining, and an inner lid arranged in sequence from outside to inside. An air extraction device is arranged on the lining. When air extraction for preservation is required, the air extraction device can extract the gas in the pot through a sealed air extraction cavity. When cooking, the air extraction cavity is not communicated with the cooking cavity inside the pot body. After the user finishes cooking and takes out the food, the lid will be buckled on the pot body. Since the food in the pot is relatively hot, steam will continuously be generated, increasing the pressure inside the pot body. Since there is no pressure relief channel, it will be difficult for the user to open the lid again, resulting in poor user experience. Summary of the Invention

[0003] The main object of the present invention is to provide a cooking appliance to solve the problem of poor user experience of the cooking appliance in the prior art.

[0004] To achieve the above object, the present invention provides a cooking appliance, including: a cooking cavity; an air extraction cavity, with a first communication channel provided between the air extraction cavity and the cooking cavity so that the gas in the cooking cavity can be extracted through the air extraction cavity; an air extraction device, the suction port of the air extraction device is communicated with the air extraction cavity; a float, movably arranged in the first communication channel, the float has an air extraction position for communicating the air extraction cavity with the cooking cavity and a sealing position for disconnecting the air extraction cavity from the cooking cavity. In the non-working state of the cooking appliance, the float is in the air extraction position; a float driving mechanism, driving the float to move from the air extraction position to the sealing position, and the float moves to the air extraction position under the action of its own gravity; a one-way mechanism, enabling the gas in the air extraction cavity to be discharged to the outside through the one-way mechanism and preventing the outside atmosphere from entering the air extraction cavity through the one-way mechanism.

[0005] According to the technical solution of the present invention, the cooking appliance includes a float movably arranged in the first connecting channel, the float has an exhaust position for connecting the exhaust cavity with the cooking cavity and a sealing position for disconnecting the exhaust cavity from the cooking cavity, and the float is in the exhaust position when the cooking appliance is not in operation. The cooking appliance also includes a one-way mechanism, which enables the gas in the exhaust cavity to be discharged to the outside through the one-way mechanism, and prevents the outside atmosphere from entering the exhaust cavity through the one-way mechanism. When the user finishes cooking and takes the food, the food in the cooking cavity is hot, so steam is continuously generated, which increases the pressure in the cooking cavity. Since the cooking appliance is in the non-operating state, the float is in the exhaust position, and the one-way mechanism enables the gas in the exhaust cavity to be discharged to the outside through the one-way mechanism. Therefore, the steam in the cooking cavity can enter the exhaust cavity through the float, and then finally be discharged to the outside through the one-way mechanism. In this way, the above structure can reduce the pressure in the cooking cavity, avoid the phenomenon that the user has difficulty in opening the lid, thereby improving the user experience and solving the problem of poor user experience of the cooking appliance in the prior art.

[0006] Furthermore, the one-way mechanism includes a second connecting channel and a switch mechanism arranged on the second connecting channel. When the switch mechanism is in an open state, the second connecting channel connects the air extraction chamber with the outside atmosphere, so that the gas in the air extraction chamber can be discharged to the outside through the second connecting channel. When the switch mechanism is in a closed state, the second connecting channel is blocked, and the air extraction chamber and the outside atmosphere are not connected to each other, so that the outside atmosphere cannot enter the air extraction chamber through the second connecting channel. The cooking appliance also includes: a control device, which controls the switch mechanism to switch between an open state and a closed state.

[0007] Further, when the cooking appliance is in a non-working state, the switch mechanism is in an open state.

[0008] Furthermore, the switching mechanism is arranged in the middle part of the second connecting channel, and the switching mechanism divides the second connecting channel into a first connecting section connected to the vacuum chamber and a second connecting section connected to the outside. The switching mechanism includes a blocking structure, and the blocking structure is movably arranged at the outlet of the first connecting section or the entrance of the second connecting section. When the switching mechanism is in an open state, the blocking structure avoids the outlet of the first connecting section and the entrance of the second connecting section. When the switching mechanism is in a closed state, the blocking structure blocks the outlet of the first connecting section or the entrance of the second connecting section.

[0009] Furthermore, the switch mechanism also includes a shell, the blocking structure is arranged inside the shell, and a first joint and a second joint are arranged on the shell. The outlet of the first connecting section is connected to the channel in the first joint, and the inlet of the second connecting section is connected to the channel in the second joint.

[0010] Furthermore, the blocking structure includes a push rod structure and a sealing structure arranged at the end of the push rod structure.

[0011] Further, the switch mechanism further includes a driving part for driving the plugging structure to move.

[0012] Further, the cooking appliance includes: a pot body for containing food to be cooked; a pot lid covering the pot body, the pot lid including a face lid, a lining and an inner lid arranged in sequence from top to bottom, a sealing part is arranged on the pot lid, the cavity formed by the sealing part and the inner lid forms an air extraction cavity, the cavity formed by the inner lid and the pot body forms a cooking cavity, and the first communication channel is arranged on the inner lid.

[0013] Further, an installation opening is arranged on the lining, the sealing part includes a sealing cover arranged at the installation opening and a sealing ring arranged between the installation opening and the inner lid, the sealing cover, the sealing ring and the inner lid jointly form the air extraction cavity, and a first through hole communicated with the air suction port and a second through hole communicated with the inlet of the first communication section are arranged on the sealing cover.

[0014] Further, a first magnetic block is arranged on the float, the first magnetic block has a first magnetic pole, the float driving mechanism includes a second magnetic block, the second magnetic block has a second magnetic pole, the first magnetic pole and the second magnetic pole are different, when the first magnetic block corresponds to the second magnetic block, the float is attracted by the second magnetic block and moves to the sealing position, when the distance between the second magnetic block and the first magnetic block is greater than a predetermined distance, the float moves to the air extraction position under the action of its own gravity.

[0015] Further, the float driving mechanism further includes a rotating bracket, the rotating bracket is pivotally arranged above the air extraction cavity, the rotating bracket rotates on a horizontal plane, and the second magnetic block is arranged at one end of the rotating bracket far away from the pivot axis of the rotating bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0017] Figure 1 shows a schematic front view structure of an embodiment of a cooking appliance according to the present invention;

[0018] Figure 2 shows Figure 1 a longitudinal sectional structure schematic diagram of the cooking appliance;

[0019] Figure 3 shows Figure 1 an exploded structure schematic diagram of the pot body, inner lid and lining of the cooking appliance;

[0020] Figure 4 shows Figure 1 an exploded structure schematic diagram of the pot body and lining of the cooking appliance;

[0021] Figure 5 shows Figure 1 a schematic cross-sectional structure diagram of the pot body and the pot lid of a cooking appliance when they are combined;

[0022] Figure 6 shows Figure 5 an enlarged structure diagram of part A of a cooking appliance;

[0023] Figure 7 shows Figure 1 a three-dimensional structure diagram of the inner liner of a cooking appliance;

[0024] Figure 8 shows Figure 7 an internal structure diagram of the switch mechanism of a cooking appliance;

[0025] Figure 9 shows Figure 1 a partial cross-sectional structure diagram of a cooking appliance when the float is in the air extraction position;

[0026] Figure 10 shows Figure 9 an enlarged structure diagram of part B of a cooking appliance;

[0027] Figure 11 shows Figure 1 a partial cross-sectional structure diagram of a cooking appliance when the float is in the sealed position; and

[0028] Figure 12 shows Figure 9 an enlarged structure diagram of part C of a cooking appliance.

[0029] Among them, the above-mentioned drawings include the following reference numerals:

[0030] 1, cooking cavity; 2, air extraction cavity; 10, pot body; 20, pot lid; 21, face cover; 22, inner liner; 23, inner lid; 231, first communication channel; 32, sealing cover; 321, first through hole; 322, second through hole; 33, sealing ring; 40, air extraction device; 41, air inlet; 42, exhaust port; 50, float; 70, first magnet; 80, float drive mechanism; 81, second magnet; 82, solenoid valve; 83, rotating bracket; 90, one-way mechanism; 91, second communication channel; 911, first communication section; 9111, outlet; 912, second communication section; 9121, inlet; 92, switch mechanism; 921, plugging structure; 9211, push rod structure; 9212, sealing structure; 922, outer shell; 9221, first joint; 9222, second joint; 923, drive part; 110, third joint. Detailed implementation manners

[0031] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0032] As Figures 1 to 12 shown, the cooking appliance of this embodiment includes a cooking cavity 1, an air extraction cavity 2, an air extraction device 40, a float 50, a float driving mechanism 80, and a one-way mechanism 90. Among them, a first communication channel 231 is provided between the air extraction cavity 2 and the cooking cavity 1 so that the gas in the cooking cavity 1 can be extracted through the air extraction cavity 2. The suction port 41 of the air extraction device 40 is communicated with the air extraction cavity 2. The float 50 is movably arranged in the first communication channel 231. The float 50 has an air extraction position for communicating the air extraction cavity 2 with the cooking cavity 1 and a sealing position for disconnecting the air extraction cavity 2 from the cooking cavity 1. When the cooking appliance is in a non-working state, the float 50 is in the air extraction position. The float driving mechanism 80 drives the float 50 to move from the air extraction position to the sealing position, and the float 50 moves to the air extraction position under the action of its own gravity. The one-way mechanism 90 enables the gas in the air extraction cavity 2 to be discharged to the outside through the one-way mechanism 90 and prevents the outside atmosphere from entering the air extraction cavity 2 through the one-way mechanism 90.

[0033] Applying the technical solution of this embodiment, the cooking appliance includes a float 50 movably arranged in the first communication channel. The float 50 has an air extraction position for communicating the air extraction cavity 2 with the cooking cavity 1 and a sealing position for disconnecting the air extraction cavity 2 from the cooking cavity 1 (i.e., Figure 10 the position where the float 50 is located in Figure 8 ). When the cooking appliance is in a non-working state, the float 50 is in the air extraction position (i.e.,

[0034] As Figures 7 to 12As shown, in this embodiment, the one-way mechanism 90 includes a second communication channel 91 and a switching mechanism 92 disposed on the second communication channel 91. When the switching mechanism 92 is in the open state, the second communication channel 91 communicates the air extraction chamber 2 with the outside atmosphere, so that the gas in the air extraction chamber 2 can be discharged to the outside through the second communication channel 91. When the switching mechanism 92 is in the closed state, the second communication channel 91 is blocked, and the air extraction chamber 2 is not connected to the outside atmosphere, so that the outside atmosphere cannot enter the air extraction chamber 2 through the second communication channel 91. In this embodiment, the cooking appliance further includes: a control device that controls the switching mechanism 92 to switch between the open state and the closed state. Specifically, when the control device receives an air extraction signal, the float 50 is in the air extraction position, the control device controls the air extraction device 40 to extract air, and controls the switching mechanism 92 to make the switching mechanism 92 in the closed state, so that the air extraction chamber 2 is not connected to the outside, ensuring that the gas in the air extraction chamber 2 and the cooking chamber 1 can be smoothly extracted. When the control device receives a cooking signal and the float driving mechanism 80 fails, the control device can control the switching mechanism 92 to open, so that the air extraction chamber 2 is connected to the outside. After being connected, the pressure in the air extraction chamber 2 is equal to the outside pressure. As the pressure in the cooking chamber 1 increases, the pressure difference between the gas in the cooking chamber 1 and the air extraction chamber 2 also increases. When the pressure difference is sufficient to overcome the gravity of the float 50, the float 50 can float to the sealing position. The above structure enables the cooking chamber 1 to still be normally pressurized during cooking even if the float driving mechanism 80 fails, ensuring the cooking effect of the cooking appliance.

[0035] In this embodiment, when the cooking appliance is in a non-operating state, the switching mechanism 92 is in the open state. Specifically, when the user finishes cooking and takes out the food, the lid will be closed. Since the food in the cooking chamber 1 is relatively hot, steam will be continuously generated, causing the pressure in the cooking chamber 1 to increase. Since the cooking appliance is in a non-operating state, the float 50 is in the air extraction position and the switching mechanism 92 is in the open state. Therefore, the steam in the cooking chamber 1 can enter the air extraction chamber 2 through the float 50, and then enter the second communication channel 91. Then, the steam entering the second communication channel 91 will pass through the switching mechanism 92 and finally be discharged to the outside. Therefore, the above structure can reduce the pressure in the cooking chamber 1, avoid the phenomenon that it is difficult for the user to open the lid, thereby improving the user experience and solving the problem of poor user experience of the cooking appliance in the prior art.

[0036] As Figure 7 and Figure 8As shown, in the present embodiment, the switch mechanism 92 is arranged in the middle of the second connecting channel 91, and the switch mechanism 92 divides the second connecting channel 91 into a first connecting section 911 connected to the vacuum chamber 2 and a second connecting section 912 connected to the outside. The switch mechanism 92 includes a blocking structure 921, and the blocking structure 921 is movably arranged at the outlet 9111 of the first connecting section 911 or the inlet 9121 of the second connecting section 912. When the switch mechanism 92 is in an open state, the blocking structure 921 avoids the outlet 9111 of the first connecting section 911 and the inlet 9121 of the second connecting section 912. When the switch mechanism 92 is in a closed state, the blocking structure 921 blocks the outlet 9111 of the first connecting section 911 or the inlet 9121 of the second connecting section 912. Preferably, in this embodiment, when the switch mechanism 92 is in the open state, the blocking structure 921 is away from the outlet 9111 of the first connecting section 911, and the steam in the air extraction chamber 2 enters the first connecting section 911 and flows toward the switch mechanism 92. Since the blocking structure 921 avoids the outlet 9111 of the first connecting section 911. Therefore, the steam will enter the inside of the switch mechanism 92 from the outlet 9111, and then enter the second connecting section 912 from the inlet 9121. The steam entering the second connecting section 912 can eventually be discharged to the outside. The above structure is simple and easy to implement.

[0037] like Figure 7 and Figure 8 As shown, in this embodiment, the switch mechanism 92 further includes a housing 922, a blocking structure 921 is disposed inside the housing 922, a first joint 9221 and a second joint 9222 are disposed on the housing 922, an outlet 9111 of the first communication section 911 is communicated with a channel in the first joint 9221, and an inlet 9121 of the second communication section 912 is communicated with a channel in the second joint 9222. Preferably, in this embodiment, the first joint 9221 is communicated with the air extraction chamber 2 through a first hose, and the channel in the first hose forms the first communication section 911. The second joint 9222 is communicated with the outside through a second hose, and the channel in the second hose forms the second communication section 912.

[0038] It should be noted that if Figure 7 As shown, in this embodiment, a third joint 110 is provided on the liner 22, the third joint 110 is passed through the liner 22, one end of the second hose is connected to the second joint 9222, and the other end of the second hose is sleeved on the third joint 110 so that the steam can be discharged to the outside through the third joint 110.

[0039] It should also be noted that the exhaust device 40 also includes an exhaust port 42, on which a third hose is sleeved, and one end of the third hose away from the exhaust port 42 is connected to the second hose so that the gas exhausted from the exhaust port 42 can be discharged to the outside through the third joint 110.

[0040] As Figure 8 shown, in this embodiment, the plugging structure 921 includes a push rod structure 9211 and a sealing structure 9212 provided at the end of the push rod structure 9211. When the switch mechanism 92 is in the closed state, the push rod structure 9211 pushes the sealing structure 9212 against the end of the first joint 9221 away from the first hose. The above structure is simple, and the sealing structure 9212 makes the plugging effect better and prevents air leakage.

[0041] As Figure 8 shown, in this embodiment, the switch mechanism 92 further includes a driving portion 923 for driving the movement of the plugging structure 921. The above structure can provide driving force for the plugging structure 921.

[0042] As Figures 1 to 6 、 Figures 9 to 12 shown, in this embodiment, the cooking appliance includes a pot body 10 and a pot lid 20. Among them, the pot body 10 is used to hold the food to be cooked. The pot lid 20 is covered on the pot body 10. The pot lid 20 includes a face cover 21, a lining 22 and an inner lid 23 arranged in sequence from top to bottom. A sealing portion is provided on the pot lid 20. The cavity formed by the sealing portion and the inner lid 23 forms an air extraction cavity 2, and the cavity formed by the inner lid 23 and the pot body 10 forms a cooking cavity 1. A first communication channel 231 is provided on the inner lid 23. The above structure is simple and easy to implement.

[0043] As Figures 9 to 12 shown, in this embodiment, an installation opening is provided on the lining 22. The sealing portion includes a sealing cover 32 provided at the installation opening and a sealing ring 33 provided between the installation opening and the inner lid 23. The sealing cover 32, the sealing ring 33 and the inner lid 23 together form the air extraction cavity 2. A first through hole 321 communicating with the air suction port 41 and a second through hole 322 communicating with the inlet of the first communication section 911 are provided on the sealing cover 32. The above sealing ring 33 is provided between the lining 22 and the inner lid 23 to prevent air from entering the gap between the lining 22 and the inner lid 23 during air extraction, avoid the occurrence of air leakage, and ensure the air extraction efficiency.

[0044] As Figures 9 to 12As shown, in this embodiment, a first magnet 70 is provided on the float 50. The first magnet 70 has a first magnetic pole. The float driving mechanism 80 includes a second magnet 81. The second magnet 81 has a second magnetic pole. The first magnetic pole and the second magnetic pole are different. When the first magnet 70 corresponds to the second magnet 81, the float 50 is attracted by the second magnet 81 and moves to the sealing position. When the distance between the second magnet 81 and the first magnet 70 is greater than a predetermined distance, the float 50 moves to the air extraction position under the action of its own gravity. Specifically, when the second magnet 81 approaches the first magnet 70, the float 50 with the first magnet 70 moves upward to the sealing position under the action of magnetic force. When the second magnet 81 moves away from the first magnet 70 until the second magnet 81 loses the attraction to the first magnet 70, the float 50 moves downward to the air extraction position under the action of its own gravity. The above structure is simple and easy to implement.

[0045] As Figure 3 , Figure 4 and Figure 11 shown, in this embodiment, the float driving mechanism 80 further includes a rotating bracket 83. The rotating bracket 83 is pivotally provided above the air extraction chamber 2. The rotating bracket 83 rotates on a horizontal plane. The second magnet 81 is provided at one end of the rotating bracket 83 away from the pivot axis of the rotating bracket 83. Specifically, when the control device receives a cooking signal, the rotating bracket 83 rotates, so that the second magnet 81 swings above the air extraction chamber 2. The first magnet 70 on the float 50 rises to the sealing position due to the attraction of the second magnet 81. When the control device receives an air extraction signal, the end of the rotating bracket 83 with the second magnet swings away from the air extraction chamber 2. When the rotating bracket 83 swings to a predetermined position, the second magnet 81 no longer attracts the first magnet 70. At this time, the float 50 with the first magnet 70 falls back to the air extraction position due to its own gravity. The above structure is simple and the production cost is low. It should be noted that, in this embodiment, the float driving mechanism 80 further includes a solenoid valve 82. The solenoid valve 82 drives the rotating bracket 83 to rotate. The above structure is simple and easy to implement.

[0046] In this embodiment, the cooking appliance is an electric pressure cooker.

[0047] In this embodiment, the cooking appliance further includes a heating device for heating the food in the pot body 10.

[0048] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cooking appliance, characterized in that, Comprising: A cooking cavity (1); An air extraction cavity (2), with a first communication channel (231) provided between the cooking cavity (1) and the air extraction cavity (2) so that the gas in the cooking cavity (1) can be extracted through the air extraction cavity (2); An air extraction device (40), the suction port (41) of the air extraction device (40) being in communication with the air extraction cavity (2); A float (50), movably arranged in the first communication channel (231), the float (50) having an air extraction position for communicating the air extraction cavity (2) with the cooking cavity (1) and a sealed position for disconnecting the air extraction cavity (2) from the cooking cavity (1). When the cooking appliance is in a non-operating state, the float (50) is in the air extraction position; A float driving mechanism (80), driving the float (50) to move from the air extraction position to the sealed position, and the float (50) moves to the air extraction position under the action of its own gravity; A one-way mechanism (90), enabling the gas in the air extraction cavity (2) to be discharged to the outside through the one-way mechanism (90) and preventing the outside atmosphere from entering the air extraction cavity (2) through the one-way mechanism (90); The one-way mechanism (90) includes a second communication channel (91) and a switching mechanism (92) provided on the second communication channel (91); The switching mechanism (92) is arranged in the middle of the second communication channel (91), and the switching mechanism (92) divides the second communication channel (91) into a first communication segment (911) in communication with the air extraction cavity (2) and a second communication segment (912) in communication with the outside; 2. The cooking appliance according to claim 1, wherein, When the switching mechanism (92) is in an open state, the second communication channel (91) connects the air extraction cavity (2) with the outside atmosphere, so that the gas in the air extraction cavity (2) can be discharged to the outside through the second communication channel (91). When the switching mechanism (92) is in a closed state, the second communication channel (91) is blocked, and the air extraction cavity (2) is not in communication with the outside atmosphere, so that the outside atmosphere cannot enter the air extraction cavity (2) through the second communication channel (91). The cooking appliance further includes: A control device, controlling the switching mechanism (92) to switch between the open state and the closed state.

3. The cooking appliance according to claim 2, characterized in that, When the cooking appliance is in the non-operating state, the switching mechanism (92) is in the open state.

4. The cooking appliance according to claim 2, characterized in that, The switch mechanism (92) includes a plugging structure (921) movably arranged at the outlet (9111) of the first communication section (911) or the inlet (9121) of the second communication section (912). When the switch mechanism (92) is in the open state, the plugging structure (921) avoids the outlet (9111) of the first communication section (911) and the inlet (9121) of the second communication section (912). When the switch mechanism (92) is in the closed state, the plugging structure (921) plugs the outlet (9111) of the first communication section (911) or the inlet (9121) of the second communication section (912).

5. The cooking appliance according to claim 4, wherein, The switch mechanism (92) further includes a housing (922). The plugging structure (921) is arranged inside the housing (922). The housing (922) is provided with a first joint (9221) and a second joint (9222). The outlet (9111) of the first communication section (911) is communicated with the channel inside the first joint (9221), and the inlet (9121) of the second communication section (912) is communicated with the channel inside the second joint (9222).

6. The cooking appliance according to claim 5, characterized in that, The plugging structure (921) includes a push rod structure (9211) and a sealing structure (9212) arranged at the end of the push rod structure (9211).

7. The cooking appliance according to claim 4, wherein, The switch mechanism (92) further includes a driving part (923) for driving the movement of the plugging structure (921).

8. The cooking appliance according to claim 4, wherein, The cooking appliance includes: A pot body (10) for containing food to be cooked; A pot lid (20) covering the pot body (10). The pot lid (20) includes a face lid (21), a lining (22) and an inner lid (23) arranged in sequence from top to bottom. The pot lid (20) is provided with a sealing part. The cavity formed by the sealing part and the inner lid (23) forms the air extraction cavity (2), and the cavity formed by the inner lid (23) and the pot body (10) forms the cooking cavity (1). The first communication channel (231) is arranged on the inner lid (23).

9. The cooking appliance according to claim 8, characterized in that, The lining (22) is provided with an installation opening. The sealing part includes a sealing cover (32) arranged at the installation opening and a sealing ring (33) arranged between the installation opening and the inner lid (23). The sealing cover (32), the sealing ring (33) and the inner lid (23) together form the air extraction cavity (2). The sealing cover (32) is provided with a first through hole (321) communicated with the air suction port (41) and a second through hole (322) communicated with the inlet of the first communication section (911).

10. The cooking appliance according to claim 1, wherein, A first magnetic block (70) is provided on the float (50). The first magnetic block (70) has a first magnetic pole. The float driving mechanism (80) includes a second magnetic block (81). The second magnetic block (81) has a second magnetic pole. The first magnetic pole is different from the second magnetic pole. When the first magnetic block (70) corresponds to the second magnetic block (81), the float (50) is attracted by the second magnetic block (81) and moves to the sealing position. When the distance between the second magnetic block (81) and the first magnetic block (70) is greater than a predetermined distance, the float (50) moves to the air extraction position under the action of its own gravity.

11. The cooking appliance according to claim 10, characterized in that, The float driving mechanism (80) further includes a rotating bracket (83). The rotating bracket (83) is pivotally provided above the air extraction chamber (2). The rotating bracket (83) rotates on a horizontal plane. The second magnetic block (81) is provided at one end of the rotating bracket (83) away from the pivot axis of the rotating bracket (83).

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