Pressure cooking utensil

Abstract

The utility model provides a pressure cooking utensil. The pressure cooking utensil comprises a pot body assembly; the pot cover assembly comprises a first cover body part and a second cover body part, the first cover body part is arranged on the pot body assembly, a transition cavity is formed between the second cover body part and the first cover body part, and a cooking cavity is formed between the second cover body part and the pot body assembly; the pressure relief assembly is arranged on the first cover body part, and the air inlet end of the pressure relief assembly communicates with the transition cavity; the bubble breaking assembly is arranged in the transition cavity and used for breaking bubbles; wherein the cooking cavity communicates with the air inlet end of the pressure relief assembly through the transition cavity, and the bubble breaking assembly is suitable for running under the condition that the pressure relief assembly exhausts air. According to the pressure cooking utensil, the possibility that bubbles gather at or enter the air inlet end of the exhaust assembly can be reduced, the exhaust effect of the exhaust assembly is guaranteed, the risk that liquid generated after bubble breakage overflows through the exhaust assembly is reduced, the cleaning burden of the pressure cooking utensil is relieved, and the user use experience of the product is improved.

Description

Technical Field

[0001] This disclosure relates to the field of cooking equipment technology, and more particularly to a pressure cooking appliance. Background Technology

[0002] In related technologies, when pressure cookers release pressure, air bubbles in the cooking space tend to gather towards the exhaust vent. This not only affects the exhaust effect of the vent, but also allows air bubbles to easily enter the vent, causing liquid to overflow during exhaust. This reduces the cleanliness and reliability of the pressure cooker and is detrimental to the user experience. Utility Model Content

[0003] This disclosure aims to address at least one of the technical problems existing in the prior art or related technologies.

[0004] In view of this, a pressure cooking appliance is provided according to an embodiment of the present disclosure, comprising:

[0005] Pot body components;

[0006] The pot lid assembly includes a first lid part and a second lid part. The first lid part is disposed on the pot body assembly. A transition cavity is formed between the second lid part and the first lid part. A cooking cavity is formed between the second lid part and the pot body assembly.

[0007] A pressure relief assembly is disposed in the first cover portion, and the air inlet end of the pressure relief assembly is connected to the transition cavity;

[0008] A bubble-breaking component is disposed within the transition cavity and is used to break bubbles;

[0009] The cooking chamber is connected to the air intake end of the pressure relief assembly via a transition chamber, and the bubble breaking assembly is adapted to operate when the pressure relief assembly exhausts gas.

[0010] In one feasible implementation, the bubble-breaking component includes:

[0011] The impeller is rotatably mounted in the transition cavity.

[0012] In one feasible implementation, the impeller section includes a centrifugal impeller and / or an axial flow impeller.

[0013] In one feasible implementation, the bubble-breaking component further includes:

[0014] The drive unit is used to drive the impeller to rotate;

[0015] The pot lid assembly has a mounting cavity, and the drive unit is disposed inside the mounting cavity.

[0016] In one feasible implementation, the number of impeller sections is greater than or equal to two, and the drive section is used to drive at least one impeller section to rotate.

[0017] In one feasible implementation, the drive unit includes:

[0018] A magnetic drive component is disposed within the mounting cavity, which is not connected to the transition cavity. The output end of the magnetic drive component is arranged facing the transition cavity and is used to magnetically drive the impeller to rotate.

[0019] In one feasible implementation, the impeller section includes:

[0020] First impeller body;

[0021] The connecting shaft has a first shaft end and a second shaft end. The first shaft end is connected to the first impeller body, and the second shaft end includes a convex curved surface arranged toward the output end of the magnetic drive member. The connecting shaft is magnetically connected to the magnetic drive member.

[0022] In one feasible implementation, the first impeller body is an axial flow impeller, and the pot lid assembly has a first flow hole. The first flow hole connects the cooking chamber and the transition chamber. Along the axial direction of the first impeller body, the first impeller body is located between the air inlet end of the pressure relief assembly and the first flow hole.

[0023] In one feasible implementation, the distance between the first impeller body and the pot lid assembly along the axial direction of the first impeller body is greater than or equal to 5 mm; and / or

[0024] The rotational speed of the first impeller body is greater than or equal to 1000 rpm.

[0025] In one feasible implementation, in a projection plane perpendicular to the conduction direction of the first flow hole, at least a portion of the orthographic projection of the first flow hole lies within the orthographic projection range of the first impeller body.

[0026] In one feasible implementation, the impeller section further includes:

[0027] A flow guide is provided on the pot lid assembly. The flow guide is arranged around the periphery of the first impeller body, and the first flow hole is located inside the flow guide.

[0028] In particular, along the direction from the first impeller body to the first flow hole, the distance between the inner peripheral wall of the guide member and the axis of the first impeller body decreases.

[0029] In one feasible implementation, the impeller section includes:

[0030] The second impeller body is rotatably disposed on the pressure relief assembly, and the pot lid assembly has a second flow hole that connects the cooking chamber and the transition chamber. At least a portion of the second impeller body is located between the air inlet end of the pressure relief assembly and the second flow hole.

[0031] In one feasible implementation, the second impeller body is a centrifugal impeller, and at least a portion of the second impeller body is located between the air inlet end of the pressure relief assembly and the second flow passage along the radial direction of the second impeller body.

[0032] In one feasible implementation, a flow passage is formed between the second impeller body and the pressure relief assembly, and the air inlet end of the pressure relief assembly is connected to the transition chamber through the flow passage.

[0033] In one feasible implementation, the second impeller body includes:

[0034] The connecting sleeve is rotatably fitted onto the air inlet end of the pressure relief assembly, and a first channel section with a flow passage is formed between the inner peripheral wall of the connecting sleeve and the pressure relief assembly.

[0035] An end plate is disposed at one end of the connecting sleeve and is arranged opposite to the air inlet end of the pressure relief assembly. A second channel section with a flow passage is formed between the end plate and the air inlet end of the pressure relief assembly.

[0036] The blades are located on the outer peripheral wall of the connecting sleeve.

[0037] In one feasible implementation, the width of the first channel segment in the radial direction of the second impeller body is greater than or equal to 1 mm; and / or

[0038] The width of the second channel section in the direction of conduction at the air intake end of the pressure relief assembly is greater than or equal to 1 mm.

[0039] In one feasible implementation, the impeller section further includes:

[0040] A connector is fitted onto the air inlet end of the pressure relief assembly. A through hole is formed on the side of the connector facing the air inlet end of the pressure relief assembly. The second channel section is connected to the air inlet end of the pressure relief assembly through the through hole.

[0041] The first bearing is fitted onto the connector, the connecting sleeve is fitted onto the first bearing, and the second channel section is located between the outer ring of the first bearing and the inner circumferential wall of the connecting sleeve.

[0042] In one feasible implementation, the second impeller body further includes:

[0043] A limiting component is provided on the inner circumferential wall of the connecting sleeve. The outer ring of the first bearing has a mating groove, and the limiting component is inserted into the mating groove.

[0044] In one feasible implementation, the conductive area of ​​the through hole is greater than or equal to 7 mm². 2 .

[0045] In one feasible implementation, the impeller portion is rotatably disposed on the first cover portion or the second cover portion.

[0046] In one feasible implementation, the second cover portion includes:

[0047] A first cover plate is disposed on a first cover body portion and a transition cavity is formed between the first cover body portion and the first cover plate, and an installation opening is formed on the first cover plate;

[0048] Impeller seat, located at the mounting port;

[0049] An impeller cover is provided on the side of the impeller seat facing the transition cavity. A flow cavity is formed between the impeller cover and the impeller seat. The impeller part is rotatably disposed on the impeller seat and located in the flow cavity. The impeller seat has a third flow hole that connects the flow cavity and the cooking cavity. The impeller cover has a fourth flow hole that connects the flow cavity and the transition cavity.

[0050] In one feasible implementation, the distance between the fourth flow hole and the bottom wall of the pot assembly is greater than or equal to the distance between the impeller and the bottom wall of the pot assembly; and / or

[0051] Along the extending direction of the first cover plate, the distance between the impeller portion and the air inlet end of the pressure relief assembly is greater than or equal to the radius of the first cover plate; and / or

[0052] The first cover plate has a fifth flow-through hole, which connects the transition cavity and the cooking cavity. The conduction area of ​​the fifth flow-through hole is less than or equal to 0.1 times the conduction area of ​​the third flow-through hole; and / or

[0053] The impeller seat has a raised structure, the impeller portion is rotatably fitted onto the raised structure, and a third flow passage is formed on the raised structure; and / or

[0054] The impeller seat has a sixth flow hole, which connects the flow chamber and the cooking chamber. The distance between the sixth flow hole and the bottom wall of the pot assembly is less than or equal to the distance between the third flow hole and the bottom wall of the pot assembly.

[0055] In one feasible implementation, when a sixth flow hole is formed in the impeller seat, the minimum width of the cross-section of the sixth flow hole is greater than or equal to 3 mm.

[0056] In one feasible implementation, the first cover portion includes:

[0057] A shell is disposed on the pot body assembly, a pressure relief assembly is disposed on the shell, and a transition cavity is formed between the shell and the second cover portion;

[0058] A lifting shaft is located in the middle of the housing, the impeller is rotatably mounted on the lifting shaft, and the second cover is detachably connected to the lifting shaft.

[0059] In one feasible implementation, the impeller section includes:

[0060] The second bearing is fitted onto the lifting shaft;

[0061] The third impeller body is fitted onto the bearing, and the third impeller body is an axial flow fan blade;

[0062] The second cover portion has a seventh flow hole, and at least part of the seventh flow hole is located on one side of the third impeller body along the axial direction.

[0063] In one feasible implementation, the third impeller body forms a limiting protrusion, and the outer ring of the second bearing forms a limiting groove, with the limiting protrusion and the limiting groove engaging in a limiting fit.

[0064] In one feasible implementation, the second cover portion includes:

[0065] The second cover plate is arranged opposite to the shell, and a transition cavity is formed between the second cover plate and the shell. The second cover plate is formed with a guide rib and a seventh flow hole. The guide rib is arranged around the periphery of the third impeller body, and at least part of the seventh flow hole is located inside the guide rib.

[0066] A handle is inserted through the second cover plate and is detachably fitted onto the lifting shaft;

[0067] In particular, along the direction from the third impeller body to the seventh flow hole, the distance between the inner peripheral wall of the guide rib and the axis of the third impeller body decreases.

[0068] In one feasible implementation, the distance between the third impeller body and the housing along the axial direction of the third impeller body is greater than or equal to 2 mm; and / or

[0069] Along the axial direction of the third impeller body, the distance between the third impeller body and the handle is greater than or equal to 2 mm; and / or

[0070] Along the radial direction of the third impeller body, the distance between the third impeller body and the inner peripheral wall of the guide rib is greater than or equal to 5 mm.

[0071] In one feasible implementation, the bubble-breaking component includes:

[0072] The air pumping section has its output end located within the transition chamber.

[0073] Compared to the prior art, this disclosure has at least the following beneficial effects: The pressure cooking appliance provided in the embodiments of this disclosure includes a pot body assembly, a pot lid assembly, a pressure relief assembly, and a bubble-breaking assembly. A cooking chamber is formed between the pot body assembly and the pot lid assembly, which can be used to hold the food to be cooked. A transition chamber is formed inside the pot lid assembly. The pressure relief assembly is disposed on the pot lid assembly and can be used to connect the cooking chamber with the external environment, allowing the cooking chamber to release pressure. The bubble-breaking assembly is disposed in the aforementioned transition chamber and is used to break bubbles. The air inlet of the pressure relief assembly can be connected to the cooking chamber through the transition chamber. The bubble-breaking assembly is adapted to operate when the pressure relief assembly is releasing pressure, so that when the pressure relief assembly is open, the gas in the cooking chamber can flow under pressure to... The gas flows through the transition chamber to the air inlet of the pressure relief assembly for release to the outside. Correspondingly, when the gas flows through the connection between the cooking chamber and the transition chamber, it can come into contact with the lid assembly. The gas carrying air bubbles is also more likely to come into contact with the lid assembly and burst when passing through the connection between the cooking chamber and the transition chamber, thereby reducing the number of air bubbles in the transition chamber. Furthermore, the bubble-breaking assembly can operate when the pressure relief assembly is venting, which can at least further break the air bubbles in the transition chamber, reducing the possibility of air bubbles accumulating or entering the air inlet of the pressure relief assembly. This ensures the venting effect of the pressure relief assembly and reduces the risk of liquid overflowing through the pressure relief assembly after the air bubbles burst. It also reduces the cleaning burden of pressure cooking appliances and improves the user experience of the product. Attached Figure Description

[0074] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of exemplary embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0075] Figure 1 This is a schematic structural diagram of a pressure cooking appliance according to an embodiment of the present disclosure;

[0076] Figure 2 for Figure 1 A schematic enlarged view of a portion of region A in the middle;

[0077] Figure 3 for Figure 1 A schematic diagram of an application scenario in area A of the map;

[0078] Figure 4 A schematic structural diagram of a pressure cooking appliance according to another embodiment of this disclosure;

[0079] Figure 5 A schematic exploded view of a pressure cooking appliance according to another embodiment of this disclosure;

[0080] Figure 6 for Figure 4 A schematic enlarged view of a portion of region B in the middle;

[0081] Figure 7 A schematic structural diagram of a pressure cooking appliance according to another embodiment of the present disclosure;

[0082] Figure 8 A schematic exploded view of a pressure cooking appliance according to another embodiment of the present disclosure;

[0083] Figure 9 for Figure 7 A schematic enlarged view of a portion of region C in the middle;

[0084] Figure 10 A schematic structural diagram of a pressure cooking appliance according to another embodiment of the present disclosure;

[0085] Figure 11 for Figure 10 A schematic enlarged view of a portion of region D in the middle;

[0086] Figure 12 A schematic structural diagram of a pressure cooking appliance according to another embodiment of the present disclosure;

[0087] Figure 13 for Figure 12 A schematic enlarged view of a portion of region E in the middle;

[0088] Figure 14 This is a schematic structural diagram of the second cover portion according to an embodiment of the present disclosure;

[0089] Figure 15 A schematic structural diagram of a pressure cooking appliance according to another embodiment of the present disclosure;

[0090] Figure 16 for Figure 15 A schematic enlarged view of a portion of region F in the middle.

[0091] in, Figures 1 to 16 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0092] 100 Pot body assembly; 200 Pot lid assembly; 300 Pressure relief assembly; 400 Bubble breaking assembly;

[0093] 210 First cover portion; 220 Second cover portion;

[0094] 410 Impeller section; 420 Drive section;

[0095] 440 pump unit;

[0096] 211 Housing; 212 Hanging shaft;

[0097] 221 First cover plate; 222 Impeller seat; 223 Impeller cover;

[0098] 225 Second cover plate; 226 Handle;

[0099] 411 First impeller body; 412 Connecting shaft; 413 Flow guide;

[0100] 414 Second impeller body; 415 Connecting part; 416 First bearing;

[0101] 417 Second bearing; 418 Third impeller body;

[0102] 421 Magnetic drive unit; 422 Mounting base;

[0103] 4141 Connecting sleeve; 4142 End plate; 4143 Blade;

[0104] 101 Cooking cavity; 201 Transition cavity; 202 Mounting cavity; 203 Eighth flow hole; 301 Flow channel; 301a First channel section; 301b Second channel section. Detailed Implementation

[0105] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0106] like Figures 1 to 16 As shown, according to an embodiment of this disclosure, a pressure cooking appliance is provided, including: a pot body assembly 100; a pot lid assembly 200, including a first lid portion 210 and a second lid portion 220, the first lid portion 210 being disposed on the pot body assembly 100, a transition cavity 201 being formed between the second lid portion 220 and the first lid portion 210, and a cooking cavity 101 being formed between the second lid portion 220 and the pot body assembly 100; a pressure relief assembly 300 being disposed on the first lid portion 210, the air inlet of the pressure relief assembly 300 being connected to the transition cavity 201; and a bubble breaking assembly 400 being disposed in the transition cavity 201, the bubble breaking assembly 400 being used to break air bubbles; wherein, the cooking cavity 101 is connected to the air inlet of the pressure relief assembly 300 through the transition cavity 201, and the bubble breaking assembly 400 is adapted to operate when the pressure relief assembly 300 is venting air.

[0107] The pressure cooking appliance provided in this embodiment includes a pot body assembly 100, a lid assembly 200, a pressure relief assembly 300, and a bubble-breaking assembly 400. A cooking chamber 101 is formed between the pot body assembly 100 and the lid assembly 200, which can be used to hold food to be cooked. A transition chamber 201 is formed within the lid assembly 200. The pressure relief assembly 300 is disposed on the lid assembly 200 and can be used to connect the cooking chamber 101 with the external environment, allowing the cooking chamber 101 to release pressure. The bubble-breaking assembly 400 is disposed within the aforementioned transition chamber 201 and is used to break air bubbles. The air inlet of the pressure relief assembly 300 can be connected to the cooking chamber 101 through the transition chamber 201. The bubble-breaking assembly 400 is adapted to operate when the pressure relief assembly 300 is releasing pressure, so that when the pressure relief assembly 300 is open, the gas in the cooking chamber 101 can flow under pressure to... The transition chamber 201 is used to release gas to the air inlet of the pressure relief assembly 300. Correspondingly, when the gas flows through the connection between the cooking chamber 101 and the transition chamber 201, it can come into contact with the lid assembly 200. The gas carrying bubbles can also easily come into contact with the lid assembly 200 and break when passing through the connection between the cooking chamber 101 and the transition chamber 201, thereby reducing the number of bubbles in the transition chamber 201. The bubble breaking assembly 400 can operate when the pressure relief assembly 300 is venting gas, which can at least further break the bubbles in the transition chamber 201, reducing the possibility of bubbles accumulating at or entering the air inlet of the pressure relief assembly 300, ensuring the venting effect of the pressure relief assembly 300, reducing the risk of liquid generated after bubble breakage overflowing through the pressure relief assembly 300, reducing the cleaning burden of pressure cooking appliances, and improving the user experience of the product.

[0108] The aforementioned pot lid assembly 200 may include a first lid portion 210 and a second lid portion 220. Based on the aforementioned configuration, the independence of the transition chamber 201 relative to the cooking chamber 101 can be improved, which can help increase the contact area between the gas and the pot lid assembly 200 during exhaust and extend the gas flow path, increase the probability of bubble bursting, and reduce the risk of leakage from the pressure relief assembly 300. It is understood that in practical applications, the second lid portion 220 may have a flow hole so that the cooking chamber 101 and the transition chamber 201 can be connected through the flow hole, and the second lid portion 220 can be used to contact the bubbles, thereby improving the bubble-breaking ability of the second lid portion 220.

[0109] Furthermore, based on the aforementioned configuration, the bubble-breaking component 400 is located between the first cover portion 210 and the second cover portion 220. Thus, when the fluid in the cooking chamber 101 flows toward the air inlet of the pressure relief component 300, it needs to pass through the second cover portion 220 and the bubble-breaking component 400 in sequence. It is understood that the aforementioned fluid includes, but is not limited to, gas, liquid and bubbles. Therefore, the pressure cooking appliance of this disclosure can intercept and break bubbles in multiple layers during the exhaust process, enhance the effect of the pressure cooking appliance on intercepting and breaking bubbles, and further reduce the possibility of bubbles accumulating at or entering the air inlet of the pressure relief component 300. Meanwhile, since the second cover portion 220 can form the aforementioned cooking cavity 101 with the pot body assembly 100, that is, the second cover portion 220 can cover the pot opening of the pot body assembly 100, the coverage area of ​​the second cover portion 220 over the cooking cavity 101 is relatively large. Therefore, compared with the method of specifically covering the air inlet end of the pressure relief assembly 300 with a bubble-breaking cover, on the one hand, the second cover portion 220 can have a larger contact area with the fluid, and thus, during the venting and depressurization process, the second cover portion 220 can have a higher probability of contacting air bubbles. It is understandable that during the venting and depressurization process of a pressure cooking appliance, air bubbles are easily generated in the cooking cavity 101, which are widely distributed and numerous. The large number of bubbles, and the fact that the bubbles tend to preferentially contact the second cover portion 220 as they flow toward the exhaust component 300, result in a larger contact area between the second cover portion 220 and the fluid. This allows the second cover portion 220 to have higher bubble interception and breaking efficiency, reducing the number of bubbles entering the transition chamber 201 and helping to reduce the bubble breaking burden on the anti-clogging component 400. On the other hand, it also facilitates the distribution of force on the second cover portion 220 during use, thus giving it stronger pressure resistance and impact resistance. Compared to the aforementioned bubble breaking cover, it is more suitable for breaking and intercepting bubbles during the exhaust and depressurization process of pressure cooking appliances.

[0110] It is understood that the aforementioned pot body assembly 100 has a pot opening, and the aforementioned pot lid assembly 200 can be used to cover or open the aforementioned pot opening. When the pot lid assembly 200 covers the aforementioned pot opening, the aforementioned cooking cavity 101 is formed between the pot lid assembly 200 and the pot body assembly 100. The connection between the aforementioned pot lid assembly 200 and the aforementioned pot body assembly 100 can be of various forms, such as a movable connection or a detachable connection, etc., which are not limited here.

[0111] Understandably, in practical applications, the first lid portion 210 can be used as the outer lid of the pot lid assembly 200, thereby improving the aesthetics and structural reliability of the pot lid assembly 200. Correspondingly, the second lid portion 220 can be used as the inner lid of the pot lid assembly 200, so that the pot lid assembly 200 can use the second lid portion 220 to structurally cooperate with the pot body assembly 100 to form the aforementioned cooking cavity 101, and facilitates ensuring the sealing of the cooking cavity 101 during the cooking process. The first lid portion 210 is used to lock and unlock with the pot body assembly 100; during the cooking process, the aforementioned first lid portion 210 and the pot body assembly 100 can be in a locked state, thereby preventing the pot lid assembly 200 from opening, which is conducive to ensuring the stable and safe operation of the pressure cooking process. Correspondingly, after the cooking is completed, the first lid portion 210 and the pot body assembly 100 can be unlocked to facilitate the user to take food or clean the pressure cooking appliance. A sealing ring can be provided between the periphery of the second cover portion 220 and the pot body assembly 100. When the pot lid assembly 200 covers the pot opening, the cooking cavity 101 is formed between the second cover portion 220 and the pot body assembly 100. The sealing ring can be used to seal the pot body assembly 100. Thus, when the cooking cavity 101 is formed between the second cover portion 220 and the pot body assembly 100, the pot lid assembly 200 can form a circumferential sealing fit with the pot body assembly 100. The sealing ring seals the circumferential gap between the pot lid assembly 200 and the pot body assembly 100, which helps to improve the environmental stability of the cooking cavity 101 during cooking and reduces the risk of overflow from the pressure cooking appliance.

[0112] It is understood that the connection between the aforementioned first cover portion 210 and the aforementioned pot body assembly 100 can take many forms, such as a movable connection or a detachable connection, etc., and no further limitations are imposed here. Correspondingly, there can also be many ways to lock and unlock the aforementioned first cover portion 210 and pot body assembly, and no further limitations are imposed here.

[0113] It is understood that the diameter or cross-sectional area of ​​the flow-through holes on the second cover portion 220 can be selected according to actual needs. For example, if good flow passage is required, the diameter or cross-sectional area of ​​the flow-through holes can be set to be larger; if a high bubble-breaking effect is required, the diameter or cross-sectional area of ​​the flow-through holes can be set to be smaller. Specific values ​​for the diameter or cross-sectional area are not limited here. The shape of the flow-through holes can be various, such as circular, elliptical, polygonal, or oblong, etc., and can be selected according to actual needs. The number of flow-through holes can be multiple, and the specific number can be selected according to actual needs.

[0114] It is understandable that, based on the aforementioned transition cavity 201, the path of gas flow from the cooking cavity 101 to the air inlet of the pressure relief component 300 can be extended, thereby increasing the probability of the bubbles naturally bursting during their movement toward the pressure relief component 300.

[0115] It is understood that the bubble-breaking method of the aforementioned bubble-breaking component 400 includes, but is not limited to, mechanical bubble breaking, temperature difference bubble breaking, etc. For example, it can be to break bubbles by rotating the impeller part 410, or to break bubbles by pumping low-temperature airflow through the pumping part 440, or a combination of various bubble-breaking methods, etc. The bubble-breaking method of the bubble-breaking component 400 can be set according to actual needs in practical applications, as long as it can break bubbles during operation, without being too limited here; the aforementioned bubble-breaking component 400 is suitable for operation when the pressure relief component 300 is venting, which means that the bubble-breaking component 400 can be operated when the pressure relief component 300 is turned on, subject to the pressure difference between the cooking chamber 101 and the pressure relief component 300. Airflow affects automatic operation. For example, the bubble-breaking component 400 may include an impeller portion 410 rotatably disposed in the transition chamber 201. The impeller portion 410 can rotate under the drive of the airflow in the transition chamber 201 and break the bubbles carried by the airflow during the rotation. Alternatively, the bubble-breaking component 400 may be linked to the pressure relief component 300 in terms of control. For example, the cooking appliance may include a control component, which can be used to control the operation of the bubble-breaking component 400 when the pressure relief component 300 is turned on. There are various ways to realize the operation of the bubble-breaking component 400 when the pressure relief component 300 is venting. The specific settings can be combined with actual needs, and no further limitations are made here.

[0116] It is understood that the aforementioned bubble-breaking component 400 being disposed within the transition cavity 201 means that at least the portion of the bubble-breaking component 400 used to perform the bubble-breaking operation is disposed within the transition cavity 201; for example, when the bubble-breaking component 400 includes the aforementioned impeller portion 410, the impeller body of the impeller portion 410 is disposed within the transition cavity 201; or, for another example, when the bubble-breaking component 400 includes the aforementioned pumping portion 440, the output end of the pumping portion 440 is disposed within the transition cavity 201.

[0117] It is understood that the aforementioned pressure relief assembly 300 may include a pressure relief valve, so that after pressure cooking is completed, the pressure relief assembly 300 can release the pressure of the cooking chamber 101 by venting through the pressure relief valve.

[0118] like Figures 2 to 4 , Figure 6 , Figure 8 , Figure 9 , Figure 11 and Figure 16 As shown, in some examples, the bubble-breaking assembly 400 includes an impeller portion 410, which is rotatably disposed within the transition cavity 201.

[0119] In this technical solution, the aforementioned bubble-breaking component 400 may include an impeller portion 410 rotatably disposed in the transition chamber 201. The impeller portion 410 is adapted to rotate when the pressure relief component 300 exhausts air, so that the impeller portion 410 can at least break the bubbles in the transition chamber 201 during rotation, thereby reducing the amount of bubbles in the transition chamber 201 and the possibility of bubbles accumulating at or entering the air inlet of the pressure relief component 300. This ensures the exhaust effect of the pressure relief component 300 and reduces the risk of liquid generated after bubble rupture overflowing through the pressure relief component 300, reducing the cleaning burden of pressure cooking appliances and improving the user experience of the product.

[0120] It is understood that the bubble-breaking assembly 400 may include a drive unit 420 for driving the impeller portion 410 to rotate. The drive unit 420 is used to operate when the pressure relief assembly 300 is venting, so that the impeller portion 410 rotates and performs the bubble-breaking operation when the pressure relief assembly 300 is venting, which helps to ensure the rotation efficiency of the impeller portion 410 and thus ensure the bubble-breaking effect. Alternatively, the bubble-breaking assembly 400 may not have the aforementioned drive unit 420. The impeller portion 410 can rotate when the pressure relief assembly 300 is turned on, driven by the airflow in the transition cavity 201, thereby reducing the energy consumption of the bubble-breaking assembly 400, which helps to reduce the use cost and maintenance cost of the bubble-breaking assembly 400, and improve the structural compactness and reliability of the bubble-breaking assembly 400 and the cooking appliance. Alternatively, there may be multiple impeller portions 410, and multiple impeller bodies can be rotatably arranged in the transition cavity 201. The drive unit 420 can drive at least one of the multiple impeller portions 410 to rotate.

[0121] It should be noted that when the bubble-breaking component 400 does not have the aforementioned drive part 420, the impeller part 410 can be rotated by the airflow flowing from the transition chamber 201 to the air inlet end of the pressure relief component 300 during the pressure relief process of the pressure cooking appliance. For example, when the pressure inside the cooking chamber 101 reaches 50-70 kPa, the instantaneous pressure reduction rate of the pressure relief component 300 during its opening can be 10-15 kPa per second, resulting in a large pressure difference. This causes the airflow inside the cooking chamber 101 to be rapidly discharged. The high airflow velocity allows the airflow to drive the impeller part 410 to rotate rapidly, effectively breaking bubbles and achieving an anti-overflow effect. Furthermore, it ensures stable rotation of the impeller part 410, reducing the probability of the impeller part 410 not rotating. It can be understood that when... When the pressure is below 30 kPa, the pressure difference between the pressure cooking appliance and the external environment is small, and the instantaneous pressure relief per unit time is about 5 kPa / s. The airflow velocity is also small, which can easily lead to the blades not rotating or rotating slowly, resulting in poor bubble breaking effect. Therefore, in practical applications, pressure relief can be performed in stages when the cooking chamber 101 is under high pressure (when the pressure inside the cooking chamber 101 is between 50-70 kPa). The duration of a single stage can be greater than 1 second, that is, the instantaneous pressure drop per unit time is 10-15 kPa / s.

[0122] It should be noted that when the defoaming component 400 has the aforementioned drive unit 420, the impeller unit 410 can be driven to rotate by the drive unit 420. For example, when the pressure inside the cooking chamber 101 reaches 50-70 kPa, the instantaneous pressure reduction rate of the pressure relief component 300 during activation can be 10-15 kPa per second, the liquid inside the cooking chamber 101 boils more violently, and the bubbles rise faster. At this time, the impeller unit 410 can be matched with a larger rotation speed, such as 1500 revolutions per minute. When the pressure inside the pot is less than 30 kPa, the boiling is relatively less violent, and the bubbles rise slower. The impeller unit 410 can achieve the same defoaming effect by matching a smaller rotation speed.

[0123] It should be noted that, Figure 3 , Figure 6 and Figure 9 The solid arrows in the diagram are used to schematically indicate the airflow direction in the area near the impeller section 410.

[0124] In some examples, impeller section 410 includes a centrifugal impeller and / or an axial impeller.

[0125] like Figure 2 , Figure 4 , Figure 6 and Figure 16As shown, in this technical solution, the aforementioned impeller portion 410 may include a centrifugal impeller. The contact area between the centrifugal impeller and the airflow is relatively large, which is beneficial to improving the bubble breaking effect of the impeller portion 410. This can further reduce the amount of bubbles in the transition chamber 201, prevent bubbles from accumulating at or entering the air inlet of the pressure relief assembly 300, and provide a more reliable guarantee for the exhaust effect of the pressure relief assembly 300.

[0126] like Figure 8 , Figure 9 , Figure 11 and Figure 16 As shown, in this technical solution, the aforementioned impeller part 410 may include an axial flow impeller. On the one hand, when the bubble breaking component 400 includes the aforementioned drive part 420, the axial flow impeller can be driven by the aforementioned drive part 420 and can easily achieve a large air volume, thereby ensuring the bubble breaking effect. On the other hand, the axial flow impeller is relatively flat in structure, which makes it easy to install inside the lid assembly 200, reducing the impact on the overall volume of the lid assembly 200 and improving the structural compactness of the lid assembly 200.

[0127] It is understood that in this technical solution, the aforementioned impeller section 410 may include both a centrifugal impeller and an axial flow impeller, thereby further improving the bubble breaking efficiency of the impeller section 410.

[0128] It is understood that when the impeller section 410 includes the aforementioned axial flow impeller, the impeller section 410 may not have the aforementioned drive section 420. Accordingly, the axial flow impeller can be driven to rotate by the airflow in the transition chamber 201 when the pressure relief assembly 300 exhausts gas.

[0129] like Figures 7 to 9 As shown, in some examples, the bubble-breaking assembly 400 further includes a drive unit 420 for driving the impeller unit 410 to rotate; wherein the lid assembly 200 forms a mounting cavity 202, and the drive unit 420 is disposed in the mounting cavity 202.

[0130] In this technical solution, the aforementioned bubble-breaking component 400 may further include a drive unit 420 for driving the impeller portion 410 to rotate. Correspondingly, the lid assembly 200 may form a mounting cavity 202 for accommodating the drive unit 420. Based on the aforementioned arrangement, on the one hand, the impeller portion 410 can be driven by the drive unit 420 to operate when the pressure relief component 300 is venting, which is beneficial to improving the rotational stability and efficiency of the impeller portion 410, improving the bubble-breaking effect of the impeller portion 410, and further reducing the accumulation of bubbles in or into the pressure relief component 300. The pressure relief assembly 300 can effectively vent air at the intake end, reducing the risk of liquid overflowing through it after bubble bursts. This also reduces the cleaning burden of pressure cooking appliances and improves the user experience. On the other hand, by placing the drive unit 420 inside the mounting cavity 202, the impact of gas in the cooking cavity 101 and transition cavity 201 on the drive unit 420 can be reduced, thus lowering the probability of drive unit 420 failure, saving maintenance costs, and improving the reliability and safety of the pressure relief assembly 300.

[0131] It is understood that the impeller 410 can output airflow when it rotates, and the airflow direction of the impeller 410 can be set according to actual needs. For example, when the impeller 410 is driven to rotate by the drive unit 420, the impeller 410 can be set to send airflow from the connection between the cooking chamber 101 and the transition chamber 201 to the air inlet of the pressure relief assembly 300, so that the impeller 410 can operate in accordance with the pressure gradient in the pressure cooking appliance, which is beneficial to saving energy consumption of the drive unit 420. Alternatively, the air intake of the pressure relief assembly 300 can be configured to supply air to the impeller section 410 at the connection between the cooking chamber 101 and the transition chamber 201, thereby making the bubble breaking assembly 400 more suitable for operation without exhaust. Correspondingly, the airflow output by the impeller section 410 can flow through the impeller section 410 from the connection between the cooking chamber 101 and the transition chamber 201 to the cooking chamber 101, and further break the bubbles in the cooking chamber 101, which is beneficial for preventing overflow during the cooking process of the bubble breaking assembly 400.

[0132] It is understandable that the driving method of the drive unit 420 to the impeller unit 410 can be shaft-coupled drive, that is, the debubbling assembly 400 can also include a drive shaft, which is connected between the output end of the drive unit 420 and the impeller unit 410. Thus, the drive unit 420 can drive the impeller unit 410 to rotate through the drive shaft, which is beneficial to improving the rotational stability of the impeller unit 410. Alternatively, the driving method of the drive unit 420 to the impeller unit 410 can be non-contact drive, such as magnetic drive, which makes it easier to define the mounting cavity 202 and the transition cavity 201 as mutually unconnected spaces, which is beneficial to further reduce the influence of the gas in the transition cavity 201 on the operation of the drive unit 420.

[0133] In some examples, the number of impeller sections 410 is greater than or equal to two, and the drive section 420 is used to drive at least one impeller section 410 to rotate.

[0134] In this technical solution, there can be multiple impeller sections 410, and the aforementioned drive section 420 can be used to drive at least one of the multiple impeller sections 410 to rotate. That is, multiple impeller sections 410 can all be driven by the drive section 420, thereby further improving the defoaming effect of the defoaming component 400; or, a portion of the multiple impeller sections 410 can be driven by the drive section 420, while the remaining impeller sections 410 can be unpowered, thereby reducing the rotational energy consumption of the impeller sections 410.

[0135] like Figures 7 to 9 As shown, in some examples, the drive unit 420 includes a magnetic drive member 421 disposed in the mounting cavity 202, the mounting cavity 202 and the transition cavity 201 are not connected to each other, and the output end of the magnetic drive member 421 is arranged toward the transition cavity 201 and is used to magnetically drive the impeller unit 410 to rotate.

[0136] In this technical solution, the aforementioned drive unit 420 may include a magnetic drive component 421 disposed in the mounting cavity 202. Correspondingly, the mounting cavity 202 and the transition cavity 201 may be configured to be non-communicating, which helps to further reduce the impact of the gas in the transition cavity 201 on the operation of the drive unit 420, improve the stability and safety of the drive unit 420, and reduce the maintenance cost of the drive unit 420. The output end of the aforementioned magnetic drive component 421 may be arranged towards the transition cavity 201 and used to magnetically drive the impeller part 410 to rotate. Thus, the drive unit 420 can provide power for the rotation of the impeller part 410 through the magnetic drive component 421, which helps to ensure the bubble breaking efficiency and bubble breaking effect of the impeller part 410, reduce the possibility of bubbles accumulating at or entering the air inlet of the pressure relief component 300, ensure the exhaust effect of the pressure relief component 300, and reduce the risk of liquid generated after bubble rupture overflowing through the pressure relief component 300, reduce the cleaning burden of pressure cooking appliances, and improve the user experience of the product.

[0137] In some feasible examples, such as Figure 8 and Figure 9 As shown, the drive unit 420 may also include a mounting base 422, which is disposed in the aforementioned mounting cavity 202, and the aforementioned magnetic drive member 421 is disposed in the mounting base 422.

[0138] like Figure 9As shown, in some examples, the impeller portion 410 includes: a first impeller body 411; a connecting shaft 412 having a first shaft end and a second shaft end, the first shaft end being connected to the first impeller body 411, the second shaft end including a convex curved surface arranged toward the output end of the magnetic drive member 421, and the connecting shaft 412 being magnetically connected to the magnetic drive member 421.

[0139] In this technical solution, the aforementioned impeller portion 410 may include a first impeller body 411 and a connecting shaft 412. The first end of the connecting shaft 412 is connected to the first impeller body 411, and the second end includes a portion facing the output end of the magnetic drive member 421 and magnetically connected to the magnetic drive member 421. Thus, when the magnetic drive member 421 is running, the connecting shaft 412 can receive the power output from the magnetic drive member 421 and rotate. The aforementioned first impeller body 411 can be disposed at the second end of the connecting shaft 412, thereby rotating when the connecting shaft 412 rotates. When in motion, the first impeller body 411 can rotate synchronously and break up the bubbles; the aforementioned first shaft end includes a convex curved surface arranged toward the output end of the magnetic drive member 421, which can reduce the contact area between the first shaft end and the lid assembly 200, reduce the friction between the lid assembly 200 and the connecting shaft 412, which helps to reduce the wear of the lid assembly 200 and the connecting shaft 412, extend the service life of the lid assembly 200 and the impeller part 410, reduce the maintenance cost of the pressure cooking appliance, and further improve the user experience of the product.

[0140] It is understandable that the aforementioned convex surface can be, but is not limited to, a partial sphere, a partial ellipsoid, etc. The specific design can be determined according to actual needs, and no further restrictions are imposed here.

[0141] like Figure 9 As shown, in some examples, the first impeller body 411 is an axial flow impeller, and the pot lid assembly 200 is formed with a first flow hole. The first flow hole connects the cooking chamber 101 and the transition chamber 201. Along the axial direction of the first impeller body 411, the first impeller body 411 is located between the air inlet end of the pressure relief assembly 300 and the first flow hole.

[0142] In this technical solution, the aforementioned first impeller body 411 can be an axial flow impeller, which is beneficial for the first impeller body 411 to generate a larger air flow during rotation, thereby improving the bubble breaking effect of the first impeller body 411. Meanwhile, the aforementioned lid assembly 200 can form a first flow hole connecting the cooking chamber 101 and the transition chamber 201. The first impeller body 411 can be positioned along the axial direction of the first impeller body 411 between the air inlet of the pressure relief assembly 300 and the first flow hole. This increases the likelihood of gas overflowing from the cooking chamber 101 into the transition chamber 201 contacting the first impeller body 411, further increasing the possibility of the first impeller body 411 contacting air bubbles and reliably reducing the risk of air bubbles approaching the air inlet of the pressure relief assembly 300. Furthermore, if the pressure cooker requires anti-overflow protection during cooking, the drive unit 420 can drive the first impeller body 411 to blow air towards the first flow hole. Correspondingly, the airflow output by the first impeller body 411 can flow into the cooking chamber 101 through the first flow hole and break up air bubbles within the cooking chamber 101, reducing the risk of liquid overflow during cooking and further improving the cleanliness and safety of the pressure cooker.

[0143] In some examples, along the axial direction of the first impeller body 411, the distance between the first impeller body 411 and the lid assembly 200 is greater than or equal to 5 mm; and / or

[0144] The rotational speed of the first impeller body 411 is greater than or equal to 1000 rpm.

[0145] In this technical solution, the axial distance between the first impeller body 411 and the pot lid assembly 200 can be set to be greater than or equal to 5mm. That is, along the axial direction of the first impeller body 411, the minimum distance between one end of the first impeller body 411 and the pot lid assembly 200 can be greater than or equal to 5mm, and the minimum distance between the other end of the first impeller body 411 and the pot lid assembly 200 can be greater than or equal to 5mm. Based on the aforementioned settings, structural interference between the first impeller body 411 and the pot lid assembly 200 during rotation can be avoided, and the air resistance on both sides of the first impeller body 411 in the circumferential direction can be reduced, thereby improving the smoothness of gas flow and providing further assurance for the exhaust efficiency of the pressure relief assembly 300.

[0146] In this technical solution, the rotational speed of the first impeller body 411 can be set to be greater than or equal to 1000 rpm. It is understood that the rotational speed of the first impeller body 411 is affected by the output performance of the drive unit 420. Therefore, in practical applications, the rotational speed of the first impeller body 411 can be adjusted by controlling the output parameters of the drive unit 420. Based on the aforementioned rotational speed constraint, the rotational speed of the first impeller body 411 can be kept at a high level, and the air volume of the first impeller body 411 can be guaranteed, thereby enhancing the bubble breaking effect of the first impeller body 411.

[0147] It is understandable that in this technical solution, while setting the rotational speed of the first impeller body 411 to be greater than or equal to 1000 rpm, the distance between the first impeller body 411 and the pot cover assembly 200 along the axial direction of the first impeller body 411 can be set to be greater than or equal to 5 mm.

[0148] It is understood that in practical applications, the specific rotational speed of the first impeller body 411 can be greater than or equal to 1000 rpm and less than or equal to 100000 rpm; for example, the rotational speed of the first impeller body 411 can be, but is not limited to, 3000 rpm, 5000 rpm, 10000 rpm, etc., and can be selected according to actual needs, without making too many restrictions here.

[0149] In some examples, in the projection plane perpendicular to the conduction direction of the first flow hole, at least a portion of the orthographic projection of the first flow hole lies within the orthographic projection range of the first impeller body 411.

[0150] In this technical solution, the correspondence between the first overflow hole and the first impeller body 411 is constrained. Based on the aforementioned arrangement, on the one hand, when the pressure relief component 300 exhausts gas, the probability of contact between the gas overflowing from the cooking chamber 101 into the transition chamber 201 and the first impeller body 411 can be further increased, which is conducive to increasing the possibility of the first impeller body 411 contacting air bubbles and more reliably reducing the risk of air bubbles approaching the air inlet end of the pressure relief component 300. On the other hand, if there is an anti-overflow requirement for the pressure cooking appliance during the cooking process, the drive unit 420 can also drive the first impeller body 411 to send air towards the first overflow hole. Correspondingly, the airflow output by the first impeller body 411 can flow more smoothly into the cooking chamber 101 through the first overflow hole and break the air bubbles in the cooking chamber 101, which is conducive to reducing the risk of liquid overflow during the cooking process of the pressure cooking appliance and further improving the cleanliness and safety of the pressure cooking appliance.

[0151] like Figure 9As shown, in some examples, the impeller portion 410 further includes a flow guide 413 disposed on the lid assembly 200. The flow guide 413 is arranged around the periphery of the first impeller body 411, and the first flow passage is located inside the flow guide 413. The distance between the inner peripheral wall of the flow guide 413 and the axis of the first impeller body 411 decreases along the direction from the first impeller body 411 to the first flow passage.

[0152] In this technical solution, the aforementioned impeller portion 410 may include a guide member 413 disposed on the pot lid assembly 200. The guide member 413 is arranged around the periphery of the first impeller body 411, and the first flow hole is located inside the guide member 413. Along the direction from the first impeller body 411 to the first flow hole, the distance between the inner peripheral wall of the guide member 413 and the axis of the first impeller body 411 is reduced. Based on the aforementioned arrangement, the impeller portion 410 can easily use the guide member 413 to converge the airflow along the direction from the first impeller body 411 to the first flow hole, thereby improving the efficiency of the airflow output by the first impeller body 411 flowing into the cooking chamber 101. In practical applications, the bubble-breaking component 400 can easily use the first impeller body 411 to break the bubbles in the cooking chamber 101.

[0153] It is understood that the flow guide 413 is located in the transition cavity 201, which can reduce the impact of the flow guide 413 on the space inside the cooking cavity 101, thereby making it easier for the cooking cavity 101 to accommodate the food to be cooked and improving the structural compactness of the pressure cooking appliance.

[0154] like Figures 1 to 3 As shown, in some examples, the impeller portion 410 includes: a second impeller body 414 rotatably disposed on the pressure relief assembly 300, the lid assembly 200 having a second flow hole communicating between the cooking chamber 101 and the transition chamber 201, and at least a portion of the second impeller body 414 being located between the air inlet end of the pressure relief assembly 300 and the second flow hole.

[0155] In this technical solution, the aforementioned impeller portion 410 may include a second impeller body 414 rotatably mounted on the pressure relief assembly 300. Correspondingly, the aforementioned pot lid assembly 200 may have a second flow hole communicating between the cooking chamber 101 and the transition chamber 201. At least a portion of the aforementioned second impeller body 414 may be arranged between the air inlet end of the gas assembly and the second flow hole. Based on the aforementioned arrangement, the distance between the second impeller body 414 and the air inlet end of the pressure relief assembly 300 can be shortened, and it is convenient for the gas in the cooking chamber 101 to contact the second impeller body 414 after overflowing into the transition chamber 201. It is understood that in the pressure relief assembly... When the pressure relief component 300 is venting, the airflow near the air inlet of the pressure relief component 300 is relatively large. As a result, the second impeller body 414 can easily rotate under the drive of the airflow and break the air bubbles carried by the airflow. This can reduce the power requirement of the second impeller body 414. At the same time, it can selectively break the air bubbles in the air inlet area of ​​the pressure relief component 300, further reducing the possibility of air bubbles accumulating or entering the air inlet of the pressure relief component 300. This ensures the venting effect of the pressure relief component 300 and reduces the risk of liquid overflowing through the pressure relief component 300 after the air bubbles burst. It also reduces the cleaning burden of the pressure cooking appliance and improves the user experience of the product.

[0156] like Figure 2 and Figure 3 As shown, in some examples, the second impeller body 414 is a centrifugal impeller, and at least a portion of the second impeller body 414 is located between the air inlet end and the second flow passage of the pressure relief assembly 300 along the radial direction of the second impeller body 414.

[0157] In this technical solution, the aforementioned second impeller body 414 can be a centrifugal impeller, and at least a portion of the second impeller body 414 can be located between the air inlet end and the second flow hole of the pressure relief assembly 300 along the radial direction of the second impeller body 414. Based on the aforementioned arrangement, the adaptability of the second impeller body 414 to the airflow direction can be improved during the exhaust process of the pressure relief assembly 300, thereby further facilitating the rotation of the second impeller body 414 under the drive of the airflow and improving the efficiency of the second impeller body 414 in breaking bubbles.

[0158] like Figure 2 and Figure 3 As shown, in some examples, a flow passage 301 is formed between the second impeller body 414 and the pressure relief assembly 300, and the air inlet end of the pressure relief assembly 300 is connected to the transition cavity 201 through the flow passage 301.

[0159] In this technical solution, a flow channel 301 can be formed between the aforementioned second impeller body 414 and the aforementioned pressure relief component 300, connecting the air inlet end of the pressure relief component 300 and the aforementioned transition cavity 201. Based on the aforementioned configuration, when the second impeller body 414 rotates, it can guide the gas in the transition cavity 201 through the aforementioned flow channel 301 to the air inlet end of the pressure relief component 300, and can further extend the flow path of the gas when it flows to the air inlet end of the pressure relief component 300, increasing the probability of bubbles breaking during the flow process. It can also allow more gas in the transition cavity 201 to preferentially pass through the second impeller body 414 when it flows to the air inlet end of the pressure relief component 300, thereby increasing the probability of bubbles contacting the second impeller body 414, which is beneficial to ensuring the rotation efficiency and bubble breaking effect of the second impeller body 414.

[0160] like Figure 2 and Figure 3 As shown, in some examples, the second impeller body 414 includes: a connecting sleeve 4141, rotatably fitted onto the air inlet end of the pressure relief assembly 300, with a first channel section 301a of the overflow channel 301 formed between the inner peripheral wall of the connecting sleeve 4141 and the pressure relief assembly 300; an end plate 4142, disposed at one end of the connecting sleeve 4141 and arranged opposite to the air inlet end of the pressure relief assembly 300, with a second channel section 301b of the overflow channel 301 formed between the end plate 4142 and the air inlet end of the pressure relief assembly 300; and blades 4143 disposed on the outer peripheral wall of the connecting sleeve 4141.

[0161] In this technical solution, the aforementioned second impeller body 414 may include a connecting sleeve 4141, an end plate 4142, and blades 4143. The connecting sleeve 4141 is rotatably fitted onto the air inlet end of the pressure relief assembly 300, and a first channel section 301a of the aforementioned flow passage 301 is formed between the inner peripheral wall of the connecting sleeve 4141 and the pressure relief assembly 300. The end plate 4142 is connected to the connecting sleeve 4141 and is arranged opposite to the air inlet end of the pressure relief assembly 300. A second channel section 301b of the aforementioned flow passage 301 is formed between the end plate 4142 and the air inlet end of the pressure relief assembly 300. The blades 4143 are disposed on the outer peripheral wall of the connecting sleeve 4141. Based on the aforementioned configuration, when the pressure relief assembly 300 exhausts gas, the transition chamber 201... The airflow flowing towards the inlet end of the pressure relief assembly 300 can preferentially contact the aforementioned blades 4143. Under the action of airflow pressure, the blades 4143 can drive the connecting sleeve 4141 to rotate and guide the gas to the first channel section 301a near the rotating shaft position, so that the airflow flows through the first channel section 301a and the second channel section 301b in sequence to the inlet end of the pressure relief assembly 300. On the one hand, when the pressure relief assembly 300 exhausts gas, the probability of contact between the second impeller body 414 and the airflow and the airflow-carried bubbles is increased, and the driving efficiency of the airflow on the second impeller body 414 is improved, which is conducive to improving the bubble breaking effect of the second impeller body 414. On the other hand, it can also improve the structural compactness of the lid assembly 200, which is conducive to improving the miniaturization level of pressure cooking appliances.

[0162] It is understandable that the aforementioned blade 4143 can be a centrifugal blade 4143.

[0163] In some examples, the radial width W2 of the first channel segment 301a in the second impeller body 414 is greater than or equal to 1 mm; and / or

[0164] The width W1 of the second channel section 301b in the conduction direction at the air intake end of the pressure relief assembly 300 is greater than or equal to 1 mm.

[0165] In this technical solution, the width W2 of the first channel section 301a in the radial direction of the second impeller body 414 is constrained. Based on the aforementioned setting, the conduction area of ​​the first channel section 301a can be avoided from being too small, which is conducive to improving the gas passage of the first channel section 301a and ensuring the exhaust efficiency of the pressure relief assembly 300.

[0166] In this technical solution, the width W1 of the second channel section 301b in the guiding direction of the air intake end of the pressure relief assembly 300 is constrained. Based on the aforementioned setting, the guiding area of ​​the second channel section 301b can be avoided from being too small, which is conducive to improving the gas passage of the first channel section 301a and ensuring the exhaust efficiency of the pressure relief assembly 300.

[0167] It is understandable that, in practical applications, the aforementioned width restrictions can be applied to both the first channel segment 301a and the second channel segment 301b simultaneously.

[0168] For example, the width W2 of the first channel segment 301a in the radial direction of the second impeller body 414 can be greater than or equal to 1 mm and less than or equal to 5 mm, such as 2 mm, 3 mm, 4 mm, etc.; the width W1 of the second channel segment 301b in the guiding direction at the air inlet end of the pressure relief assembly 300 can be greater than or equal to 1 mm and less than or equal to 5 mm, such as 2 mm, 3 mm, 4 mm, etc. In practical applications, the specific width values ​​of the first channel segment 301a and / or the second channel segment 301b can be selected according to actual needs, and no further limitations are imposed here.

[0169] like Figure 2 and Figure 3 As shown, in some examples, the impeller portion 410 further includes: a connector 415, sleeved at the air inlet end of the pressure relief assembly 300, the connector 415 having a through hole on the side facing the air inlet end of the pressure relief assembly 300, and a second channel section 301b communicating with the air inlet end of the pressure relief assembly 300 through the through hole; a first bearing 416, sleeved on the connector 415, a connecting sleeve 4141 sleeved on the first bearing 416, and the second channel section 301b located between the outer ring of the first bearing 416 and the inner peripheral wall of the connecting sleeve 4141.

[0170] In this technical solution, the aforementioned impeller part 410 may also include a connector 415 and a first bearing 416. Based on the aforementioned arrangement, the frictional resistance between the second impeller body 414 and the pressure relief assembly 300 can be further reduced, making it easier for the second impeller to rotate more smoothly and efficiently.

[0171] In some examples, the second impeller body 414 further includes a limiting member disposed on the inner peripheral wall of the connecting sleeve 4141, wherein the outer ring of the first bearing 416 has a mating groove, and the limiting member is inserted into the mating groove.

[0172] In this technical solution, the inner peripheral wall of the connecting sleeve 4141 can be provided with a limiting element, and the connecting sleeve 4141 can cooperate with the outer ring of the first bearing 416 through the aforementioned limiting element, which helps to ensure the reliability of the connection between the connecting sleeve 4141 and the bearing, and provides a more reliable guarantee for the smooth rotation of the second impeller body 414.

[0173] It is understandable that the limiting component is located within the first channel segment 301a; there can be multiple limiting components, arranged at intervals along the circumference of the connecting sleeve 4141, which can further improve the connection reliability between the connecting sleeve 4141 and the bearing.

[0174] In some examples, the through-hole area is greater than or equal to 7 mm². 2 .

[0175] In this technical solution, the conductive area of ​​the through hole of the aforementioned connector 415 is greater than or equal to 7 mm². 2 This avoids the through-hole being too small, which helps to ensure the gas passage of the through-hole and provides a guarantee for the exhaust efficiency of the pressure relief component 300.

[0176] It is understandable that when the through hole is a round hole, the diameter of the through hole can be set to be greater than or equal to 3mm.

[0177] like Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 8 , Figure 9 and Figure 11 As shown, in some examples, the impeller portion 410 is rotatably disposed on the first cover portion 210 or the second cover portion 220.

[0178] In this technical solution, the impeller part 410 can be installed on the first cover part 210 or the second cover part 220, thereby improving the installation stability of the impeller part 410 and the pressure relief assembly 300 and providing a reliable guarantee for the smooth operation of the impeller part 410 and the pressure relief assembly 300.

[0179] like Figures 4 to 6 and Figure 16 As shown, in some examples, the second cover portion 220 includes: a first cover plate 221 disposed on the first cover portion 210 and forming a transition cavity 201 between the first cover portion 210 and the first cover portion 210, the first cover plate 221 forming an installation opening; an impeller seat 222 disposed at the installation opening; an impeller cover 223 covering the side of the impeller seat 222 facing the transition cavity 201, the impeller cover 223 and the impeller seat 222 forming a flow cavity, the impeller portion 410 being rotatably disposed on the impeller seat 222 and located within the flow cavity, the impeller seat 222 forming a third flow hole communicating between the flow cavity and the cooking cavity 101, and the impeller cover 223 forming a fourth flow hole communicating between the flow cavity and the transition cavity 201.

[0180] In this technical solution, the aforementioned second cover portion 220 may include a first cover plate 221, an impeller seat 222, and an impeller shroud 223. Based on the aforementioned configuration, on the one hand, the installation stability of the impeller portion 410 can be improved. When the pressure relief assembly 300 exhausts gas, the impeller portion 410 can rotate stably under the drive of the airflow and break the air bubbles carried by the airflow. On the other hand, the second cover portion 220 can also contact the airflow using the first cover plate 221, impeller seat 222, and impeller shroud 223, which can increase the contact area between the second cover portion 220 and the airflow, thereby breaking the air bubbles carried by the airflow. Furthermore, during the flow of the airflow towards the pressure relief assembly 300, it needs to pass through the first cover plate 221, impeller seat 222, impeller portion 410, and impeller shroud 223. Thus, the bubble breaking assembly 400 can cooperate with the lid assembly 200 to break the airflow in multiple layers, further reducing the impact of air bubbles on the pressure relief assembly 300.

[0181] It is understood that in this technical solution, the aforementioned impeller section 410 may include an axial impeller and / or a centrifugal impeller.

[0182] In some examples, the distance between the fourth flow hole and the bottom wall of the pot assembly 100 is greater than or equal to the distance between the impeller portion 410 and the bottom wall of the pot assembly 100.

[0183] In this technical solution, the distance between the fourth flow hole and the bottom wall of the pot assembly 100 can be set to be greater than or equal to the distance between the impeller part 410 and the bottom wall of the pot assembly 100. This allows the fourth flow hole to be positioned at a relatively high level, which facilitates the flow of gas into the flow cavity after passing through the impeller part 410. This improves the gas permeability of the impeller cover 223 and provides a reliable guarantee for the exhaust efficiency of the pressure relief assembly 300.

[0184] It is understood that the distance between the aforementioned fourth flow hole and the bottom wall of the pot body assembly 100 is greater than or equal to the distance between the impeller portion 410 and the bottom wall of the pot body assembly 100. This applies to the case where the pot lid assembly 200 covers the pot opening of the pot body assembly 100. When the pressure relief assembly 300 is disposed on the first cover portion 210, the pressure relief assembly 300 is positioned higher relative to the bottom wall of the pot body assembly 100. Therefore, based on the constraint of the relative position between the fourth flow hole and the impeller portion 410 in this technical solution, it is beneficial for the gas to flow into the flow cavity through the fourth flow hole after passing through the impeller portion 410.

[0185] In some examples, the distance between the impeller portion 410 and the air intake end of the pressure relief assembly 300 along the extending direction of the first cover plate 221 is greater than or equal to the radius of the first cover plate 221.

[0186] In this technical solution, the distance between the impeller portion 410 and the air inlet end of the pressure relief assembly 300 can be set to be greater than or equal to the radius of the first cover plate 221 along the extension direction of the first cover plate 221. This allows the impeller portion 410, impeller seat 222, and impeller cover 223 to maintain a large distance from the pressure relief assembly 300. It is understood that in practical applications, the area near the pressure relief assembly 300 is usually equipped with devices such as sensors, safety valves, and hanger shafts 212. Based on the aforementioned arrangement, the influence of the aforementioned devices on the area near the impeller portion 410 can be reduced, which is conducive to improving the smoothness of gas flow in the area near the impeller portion 410, ensuring the stable operation of the impeller portion 410 under the drive of airflow, and improving the exhaust efficiency of the pressure relief assembly 300.

[0187] In some examples, the first cover plate 221 is formed with a fifth flow hole that connects the transition cavity 201 and the cooking cavity 101, and the conduction area of ​​the fifth flow hole is less than or equal to 0.1 times the conduction area of ​​the third flow hole.

[0188] In this technical solution, the aforementioned first cover plate 221 may be provided with the aforementioned fifth flow hole. Based on the aforementioned arrangement, on the one hand, when the bubble bursts in the transition chamber 201, the liquid generated by the burst bubble can flow back to the cooking chamber 101 through the fifth flow hole, which helps to reduce the amount of liquid accumulation in the transition chamber 201; on the other hand, by setting the conduction area of ​​the fifth flow hole to be smaller than that of the third flow hole, it is also possible to prevent a large amount of gas from flowing into the transition chamber 201 through the fifth flow hole during the exhaust process, which helps to ensure the gas flow rate at the impeller part 410, thereby ensuring the bubble breaking effect of the bubble breaking component 400.

[0189] like Figure 5 and Figure 6 As shown, in some examples, the impeller seat 222 is formed with a raised structure, the impeller portion 410 is rotatably fitted onto the raised structure, and a third flow hole is formed on the raised structure.

[0190] In this technical solution, the aforementioned impeller seat 222 can be formed with a protruding structure. The aforementioned impeller portion 410 and the aforementioned third flow hole are both disposed on the aforementioned protruding structure. Based on the aforementioned arrangement, on the one hand, it is convenient for the impeller portion 410 to connect with the impeller seat 222 and to rotate the impeller portion 410. On the other hand, it is also convenient for the gas in the cooking cavity 101 to act on the impeller portion 410 after flowing through the third flow hole, thereby driving the impeller portion 410 to rotate, thus ensuring the bubble breaking effect of the impeller portion 410.

[0191] In some examples, the impeller seat 222 is formed with a sixth flow hole, which connects the flow cavity and the cooking cavity 101; wherein the distance between the sixth flow hole and the bottom wall of the pot body assembly 100 is less than or equal to the distance between the third flow hole and the bottom wall of the pot body assembly 100.

[0192] In this technical solution, the aforementioned impeller seat 222 may also have the aforementioned sixth flow hole. Based on the aforementioned configuration, when the bubble breaks in the flow cavity, the liquid generated by the broken bubble can flow back to the cooking cavity 101 through the sixth flow hole, which helps to reduce the amount of liquid accumulation in the flow cavity and provides a reliable guarantee for the smooth operation of the impeller 410.

[0193] In some examples, the minimum width of the cross-section of the sixth flow orifice is greater than or equal to 3 mm.

[0194] In this technical solution, the minimum width of the cross-section of the sixth flow hole can be set to be greater than or equal to 3mm, thereby ensuring the liquid flowability of the sixth flow hole and providing a guarantee for the smooth drainage of liquid from the flow cavity into the cooking cavity 101 through the sixth flow hole.

[0195] It is understood that the aforementioned sixth flow passage can be, but is not limited to, a circular hole, an elliptical hole, or an oblong hole; when the aforementioned sixth flow passage is a circular hole, the minimum width of the cross-section of the aforementioned sixth flow passage is the diameter of the sixth flow passage; when the aforementioned sixth flow passage is an elliptical hole or an oblong hole, the minimum width of the cross-section of the aforementioned sixth flow passage is the minor axis length of the sixth flow passage; when the aforementioned sixth flow passage is a circular hole, the minimum width of the cross-section of the aforementioned sixth flow passage is the diameter of the sixth flow passage.

[0196] In some feasible examples, the minimum distance between the impeller section 410 and the impeller shroud 223 is greater than or equal to 2 mm.

[0197] In some feasible examples, the impeller portion 410 is detachably connected to the impeller shroud 223; and / or the impeller shroud 223 is detachably connected to the impeller seat 222; and / or the impeller seat 222 is detachably connected to the first cover plate 221.

[0198] like Figure 11 As shown, in some examples, the first cover portion 210 includes: a housing 211 disposed on the pot body assembly 100, a pressure relief assembly 300 disposed on the housing 211, and a transition cavity 201 formed between the housing 211 and the second cover portion 220; a lifting shaft 212 disposed in the middle of the housing 211, an impeller portion 410 rotatably disposed on the lifting shaft 212, and the second cover portion 220 detachably connected to the lifting shaft 212.

[0199] In this technical solution, the aforementioned first cover portion 210 may include the aforementioned housing 211 and the aforementioned hanging shaft 212. Based on the aforementioned arrangement, on the one hand, the installation stability of the impeller portion 410 can be improved, ensuring the smooth rotation of the impeller portion 410 under the drive of airflow; on the other hand, it can facilitate the disassembly and cleaning of the impeller portion 410 and the second cover portion 220, which helps to reduce the cleaning difficulty of pressure cooking appliances and further improves the user experience of the product.

[0200] like Figure 11 As shown, in some examples, the impeller portion 410 includes: a second bearing 417, sleeved on the hanging shaft 212; a third impeller body 418, sleeved on the bearing, the third impeller body 418 being an axial flow fan blade; wherein, the second cover portion 220 has a seventh flow hole, at least a portion of the seventh flow hole being located on one side of the third impeller body 418 in the axial direction.

[0201] In this technical solution, the aforementioned impeller section 410 may include the aforementioned second bearing 417 and the aforementioned third impeller body 418. Based on the aforementioned configuration, on the one hand, when the pressure relief assembly 300 exhausts gas, the gas in the cooking chamber 101 can flow to the transition chamber 201 through the seventh flow hole, and facilitate the gas to contact the third impeller body 418 after flowing into the transition chamber 201 to drive the third impeller body 418 to rotate, so that the third impeller body 418 can break the bubbles of the gas; on the other hand, it can improve the rotation smoothness of the third impeller body 418, reduce the frictional resistance and wear between the third impeller body 418 and the hanging shaft 212, and extend the service life of the hanging shaft 212 and the third impeller body 418.

[0202] In some examples, the third impeller body 418 forms a limiting protrusion, and the outer ring of the second bearing 417 forms a limiting groove, with the limiting protrusion and the limiting groove engaging in a limiting fit.

[0203] In this technical solution, the third impeller body 418 can cooperate with the limiting groove opened on the outer ring of the second bearing 417 through the limiting protrusion, which is conducive to improving the connection reliability between the third impeller body 418 and the outer ring of the second bearing 417, and provides a guarantee for the smooth rotation of the third impeller body 418.

[0204] like Figure 11As shown, in some examples, the second cover portion 220 includes: a second cover plate 225, arranged opposite to the housing 211, a transition cavity 201 formed between the second cover plate 225 and the housing 211, the second cover plate 225 having a guide rib and a seventh flow hole, the guide rib being arranged around the periphery of the third impeller body 418, and at least a portion of the seventh flow hole being located inside the guide rib; a handle 226, passing through the second cover plate 225, the handle 226 being detachably sleeved on the lifting shaft 212; wherein, along the direction from the third impeller body 418 to the seventh flow hole, the distance between the inner peripheral wall of the guide rib and the axis of the third impeller body 418 decreases.

[0205] In this technical solution, the aforementioned second cover portion 220 may include the aforementioned second cover plate 225 and the aforementioned handle 226. Based on the aforementioned configuration, on the one hand, the second cover portion 220 can use the aforementioned guide ribs to gather airflow, which is beneficial to guide the airflow in the cooking chamber 101 to the third impeller body 418 when the pressure relief component 300 exhausts air, so that the third impeller body 418 rotates more efficiently and breaks up air bubbles; on the other hand, the second cover portion 220 can be connected to the aforementioned hanging shaft 212 through the handle 226, which makes it convenient for users to disassemble and assemble the second cover portion 220, further improving the ease of use of the pressure cooking appliance.

[0206] In some examples, along the axial direction of the third impeller body 418, the distance between the third impeller body 418 and the housing 211 is greater than or equal to 2 mm; and / or

[0207] Along the axial direction of the third impeller body 418, the distance between the third impeller body 418 and the handle 226 is greater than or equal to 2 mm; and / or

[0208] Along the radial direction of the third impeller body 418, the distance between the third impeller body 418 and the inner peripheral wall of the guide rib is greater than or equal to 5 mm.

[0209] In this technical solution, the axial spacing between the third impeller body 418 and the housing 211 is constrained, thereby avoiding excessively small spacing between the third impeller body 418 and the housing 211 and reducing the risk of structural interference when the third impeller body 418 rotates.

[0210] In this technical solution, the axial spacing between the third impeller body 418 and the handle 226 on the third impeller body 418 is constrained, thereby avoiding the gap between the third impeller body 418 and the handle 226 being too small, and reducing the risk of structural interference when the third impeller body 418 rotates.

[0211] In this technical solution, the radial spacing between the third impeller body 418 and the guide rib is constrained, thereby avoiding the gap between the third impeller body 418 and the guide rib being too small, which can reduce the risk of structural interference when the third impeller body 418 rotates.

[0212] It is understandable that the range of the three interval distances in this technical solution can be fully adopted, or any one or any two of them can be adopted in practical applications.

[0213] like Figures 12 to 14 As shown, in some examples, the defoaming assembly 400 includes a pumping section 440, the output of which is located within the transition chamber 201.

[0214] In this technical solution, the bubble-breaking component 400 may include the aforementioned pumping unit 440. Based on the aforementioned configuration, when the pressure relief component 300 is venting, the bubble-breaking component 400 can use the pumping unit 440 to blow gas into the transition chamber 201 to at least break the bubbles in the transition chamber 201, reduce the possibility of bubbles accumulating at or entering the air inlet of the pressure relief component 300, ensure the venting effect of the pressure relief component 300, reduce the risk of liquid generated after bubble rupture overflowing through the pressure relief component 300, reduce the cleaning burden of pressure cooking appliances, and improve the user experience of the product.

[0215] It is understandable that the air inlet of the pumping unit 440 can be connected to the external environment, so that during use, it is convenient to deliver relatively low temperature gas into the transition chamber 201, so as to facilitate temperature difference bubble breaking in the transition chamber 201.

[0216] It is understandable that, such as Figure 13 and Figure 14 As shown, the pot lid assembly 200 may have an eighth flow hole 203 that connects the transition cavity 201 and the cooking cavity 101, and the output end of the aforementioned pumping unit 440 may be arranged corresponding to the aforementioned eighth flow hole 203.

[0217] It should be noted that the number of the aforementioned bubble-breaking components 400 and / or impeller portions 410 can be two or more. When the number of bubble-breaking components 400 and / or impeller portions 410 is two or more, the construction and installation method of each bubble-breaking component 400 and / or impeller portion 410 can be different. In practical applications, the settings can be combined with the aforementioned examples and actual needs; no further limitations are imposed here. For example, such as... Figure 15 and Figure 16 As shown, the pressure cooking appliance may include two impeller portions 410, wherein one impeller portion 410 is disposed within the aforementioned flow cavity of the second cover portion 220, and the other impeller portion 410 is disposed within the aforementioned pressure relief assembly 300; it is understood that... Figure 15 and Figure 16 The pressure cooking appliance shown is only one feasible example of a case where the number of impeller parts 410 is two or more. In actual applications, other configurations can be made, such as combining the bubble-breaking component 400 including the aforementioned pumping unit 440 with the bubble-breaking component including the aforementioned impeller part 410, or combining the bubble-breaking component 400 including the aforementioned drive unit 420 with the bubble-breaking component 400 not including the aforementioned drive unit 420, etc. Various feasible combinations will not be listed here.

[0218] In this disclosure, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0219] In the description of this disclosure, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0220] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0221] The above are merely preferred embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A pressure cooking appliance, characterized in that, The pressure cooking appliance comprises: a pot body assembly; a pot cover assembly comprising a first cover body part and a second cover body part, the first cover body part is arranged on the pot body assembly, a transition cavity is formed between the second cover body part and the first cover body part, and a cooking cavity is formed between the second cover body part and the pot body assembly; a pressure relief assembly arranged on the first cover body part, and an air inlet end of the pressure relief assembly is communicated with the transition cavity; a bubble breaking assembly arranged in the transition cavity, and the bubble breaking assembly is used for breaking bubbles; wherein the cooking cavity is communicated with the air inlet end of the pressure relief assembly through the transition cavity, and the bubble breaking assembly is adapted to operate in the case that the pressure relief assembly exhausts air.

2. The pressure cooking appliance of claim 1, wherein, The bubble breaking assembly comprises: an impeller part rotatably arranged in the transition cavity.

3. The pressure cooking appliance according to claim 2, wherein the impeller part comprises a centrifugal impeller and / or an axial flow impeller.

4. The pressure cooker according to claim 2, characterized in that The bubble breaking assembly further comprises: a driving part used for driving the impeller part to rotate; wherein the pot cover assembly is formed with a mounting cavity, and the driving part is arranged in the mounting cavity.

5. The pressure cooking appliance according to claim 4, wherein the number of the impeller parts is greater than or equal to two, and the driving part is used for driving at least one of the impeller parts to rotate.

6. The pressure cooker according to claim 4, characterized in that The driving part comprises: a magnetic driving member arranged in the mounting cavity, the mounting cavity and the transition cavity are not communicated with each other, an output end of the magnetic driving member is arranged towards the transition cavity and is used for magnetically driving the impeller part to rotate.

7. The pressure cooking appliance of claim 6, wherein, The impeller part comprises: a first impeller body; a connecting shaft having a first shaft end and a second shaft end, the first shaft end is connected to the first impeller body, the second shaft end comprises a convex curved surface arranged towards the output end of the magnetic driving member, and the connecting shaft is magnetically connected with the magnetic driving member.

8. The pressure cooking appliance according to claim 7, wherein the first impeller body is an axial flow impeller, the pot cover assembly is formed with a first flow hole communicated between the cooking cavity and the transition cavity, along the axial direction of the first impeller body, the first impeller body is located between the air inlet end of the pressure relief assembly and the first flow hole.

9. The pressure cooking appliance according to claim 8, wherein along the axial direction of the first impeller body, the spacing distance between the first impeller body and the pot cover assembly is greater than or equal to 5 mm; and / or the rotating speed of the first impeller body is greater than or equal to 1000 rpm.

10. The pressure cooking appliance according to claim 8, wherein in a projection plane perpendicular to the conduction direction of the first flow hole, the orthographic projection of at least part of the first flow hole is located within the orthographic projection range of the first impeller body.

11. The pressure cooking appliance of claim 10, wherein, The impeller part further comprises: a flow guide member arranged on the pot cover assembly, the flow guide member is arranged around the circumferential side of the first impeller body, and the first flow hole is located on the inner side of the flow guide member; wherein along the direction from the first impeller body to the first flow hole, the distance between the inner circumferential wall of the flow guide member and the axis of the first impeller body decreases.

12. The pressure cooker of claim 2, wherein, The impeller part comprises: A second impeller body is rotatably arranged in the pressure relief assembly, the pot cover assembly is formed with a second flow hole, the second flow hole is communicated between the cooking cavity and the transition cavity, and at least part of the second impeller body is located between the air inlet end of the pressure relief assembly and the second flow hole.

13. The pressure cooking appliance according to claim 12, wherein The second impeller body is a centrifugal impeller, and at least part of the second impeller body is located between the air inlet end of the pressure relief assembly and the second flow hole along a radial direction of the second impeller body.

14. The pressure cooking appliance according to claim 13, wherein A flow passage is formed between the second impeller body and the pressure relief assembly, and the air inlet end of the pressure relief assembly is communicated with the transition cavity through the flow passage.

15. The pressure cooker according to claim 14, characterized in that The second impeller body comprises: A connecting sleeve is rotatably sleeved at the air inlet end of the pressure relief assembly, and an inner peripheral wall of the connecting sleeve and the pressure relief assembly form a first passage section of the flow passage; An end plate is arranged at one end of the connecting sleeve and is arranged opposite to the air inlet end of the pressure relief assembly, and the end plate and the air inlet end of the pressure relief assembly form a second passage section of the flow passage; A blade is arranged on an outer peripheral wall of the connecting sleeve.

16. The pressure cooking appliance according to claim 15, wherein A width of the first passage section in the radial direction of the second impeller body is greater than or equal to 1 mm; and / or A width of the second passage section in a lead-through direction of the air inlet end of the pressure relief assembly is greater than or equal to 1 mm.

17. The pressure cooker of claim 15, wherein, The impeller part further comprises: A connecting piece is sleeved at the air inlet end of the pressure relief assembly, a through hole is formed on a side of the connecting piece facing the air inlet end of the pressure relief assembly, and the second passage section is communicated with the air inlet end of the pressure relief assembly through the through hole; A first bearing is sleeved on the connecting piece, the connecting sleeve is sleeved on the first bearing, and the second passage section is located between an outer ring of the first bearing and an inner peripheral wall of the connecting sleeve.

18. The pressure cooker of claim 17, wherein, The second impeller body further comprises: A limiting piece is arranged on the inner peripheral wall of the connecting sleeve, an outer ring of the first bearing is formed with a fitting groove, and the limiting piece is inserted into the fitting groove.

19. The pressure cooking appliance according to claim 17, wherein The conductive area of the through hole is greater than or equal to 7mm 2 .

20. The pressure cooking appliance according to claim 2, wherein The impeller part is rotatably arranged in the first cover body part or the second cover body part.

21. The pressure cooking appliance of claim 20, wherein, The second cover body part comprises: A first cover plate is arranged in the first cover body part and forms the transition cavity with the first cover body part, and the first cover plate is formed with a mounting opening; An impeller seat is arranged at the mounting opening; An impeller cover is sleeved on a side of the impeller seat facing the transition cavity, a flow cavity is enclosed between the impeller cover and the impeller seat, the impeller part is rotatably arranged in the impeller seat and located in the flow cavity, the impeller seat is formed with a third flow hole communicated between the flow cavity and the cooking cavity, and the impeller cover is formed with a fourth flow hole communicated between the flow cavity and the transition cavity.

22. The pressure cooking appliance of claim 21, wherein: a distance between the fourth flow hole and a bottom wall of the pot assembly is greater than or equal to a distance between the impeller portion and the bottom wall of the pot assembly; and / or a distance between the impeller portion and an air inlet end of the pressure relief assembly along an extension direction of the first cover plate is greater than or equal to a radius of the first cover plate; and / or the first cover plate is formed with a fifth flow hole, the fifth flow hole being in communication between the transition cavity and the cooking cavity, a conductive area of the fifth flow hole being less than or equal to 0.1 times a conductive area of the third flow hole; and / or the impeller seat is formed with a protruding structure, the impeller portion being rotatably sleeved on the protruding structure, and the third flow hole being formed in the protruding structure; and / or the impeller seat is formed with a sixth flow hole, the sixth flow hole being in communication between the flow cavity and the cooking cavity, a distance between the sixth flow hole and the bottom wall of the pot assembly being less than or equal to a distance between the third flow hole and the bottom wall of the pot assembly.

23. The pressure cooking appliance of claim 22, wherein: in a case where the impeller seat is formed with the sixth flow hole, a minimum width of a cross section of the sixth flow hole is greater than or equal to 3 mm.

24. The pressure cooker of claim 20, wherein, the first cover body portion comprises: a housing provided on the pot assembly, the pressure relief assembly being provided on the housing, the transition cavity being formed between the housing and the second cover body portion; a hanging shaft provided at a middle portion of the housing, the impeller portion being rotatably provided on the hanging shaft, and the second cover body portion being detachably connected to the hanging shaft.

25. The pressure cooking appliance of claim 24, wherein, the impeller portion comprises: a second bearing sleeved on the hanging shaft; a third impeller body sleeved on the bearing, the third impeller body being an axial fan blade; wherein the second cover body portion is provided with a seventh flow hole, at least part of the seventh flow hole being located on one side of the third impeller body in an axial direction.

26. The pressure cooking appliance of claim 25, wherein: the third impeller body is formed with a limiting protrusion, an outer ring of the second bearing is formed with a limiting groove, and the limiting protrusion and the limiting groove are in limiting cooperation.

27. The pressure cooking appliance of claim 25, wherein, the second cover body portion comprises: a second cover plate arranged opposite to the housing, the transition cavity being formed between the second cover plate and the housing, the second cover plate being formed with a flow guide protruding rib and the seventh flow hole, the flow guide protruding rib being arranged around a circumferential side of the third impeller body, and at least part of the seventh flow hole being located inside the flow guide protruding rib; a handle penetrating through the second cover plate, the handle being detachably sleeved on the hanging shaft; wherein a distance between an inner circumferential wall of the flow guide protruding rib and an axis of the third impeller body decreases in a direction from the third impeller body to the seventh flow hole.

28. The pressure cooking appliance of claim 27, wherein: a spacing distance between the third impeller body and the housing along an axial direction of the third impeller body is greater than or equal to 2 mm; and / or The spacing distance between the third impeller body and the handle is greater than or equal to 2mm along the axial direction of the third impeller body; and / or The spacing distance between the third impeller body and the inner peripheral wall of the flow guide convex rib is greater than or equal to 5mm along the radial direction of the third impeller body.

29. The pressure cooking appliance according to any one of claims 1 to 28, characterized in that, The bubble breaking assembly comprises: A pump gas part, and an output end of the pump gas part is located in the transition cavity.

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