Backflow assembly and cooking utensil

Abstract

The utility model discloses a backflow assembly and a cooking utensil. The backflow assembly comprises a sealing piece, a moving piece moving vertically and a pushing piece moving transversely. The moving part comprises an upper moving rod, an elastic part and a lower moving rod which are vertically arranged, the pushing part is connected to the top of the upper moving rod so as to drive the moving part to vertically move during transverse movement, the sealing part is connected to the bottom of the lower moving rod, a channel is formed in the upper portion of the lower moving rod, and the upper moving rod is arranged above the lower moving rod and extends downwards into the channel. The elastic piece is connected between the upper moving rod and the lower moving rod, and when the upper moving rod moves downwards, the elastic piece is extruded to push the lower moving rod and drive the sealing piece to move downwards; a limiting structure is arranged between the upper moving rod and the lower moving rod, and when the upper moving rod moves upwards, the lower moving rod moves upwards along with the upper moving rod through the limiting structure and drives the sealing piece to move upwards. The backflow assembly has the advantages of being simple in structure and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking equipment, in particular to a reflux component and a cooking utensil. Background Art

[0002] The electric rice cooker is a commonly used household appliance. During the cooking process, as the soaking time goes by and the water temperature rises, the surface of the rice grains begins to gelatinize and become sticky, and the rice grains will stick together to form a rice ball. Since the thermal conductivity of rice is much lower than that of water, the clumped rice grains will hinder the uniform transfer of heat to the rice in the steamer, causing the rice grains wrapped in the middle of the rice ball to be unable to absorb water and become half-cooked. In addition, the rice in the electric rice cooker is heated unevenly from top to bottom, so the gelatinization degree of the rice in different positions in the rice cooker is also inconsistent, causing some places to be over-gelatinized and rotten, while some places are not completely gelatinized, resulting in a large difference in the uniformity of the maturity of the whole pot of rice, affecting the taste of the rice.

[0003] In order to solve the problem of insufficient water absorption and insufficient gelatinization of rice grains, industry technicians have improved the rice cooker so that the rice cooker can achieve positive pressure and negative pressure in the pot in stages during the cooking process. Specifically, in the water absorption stage, a vacuum device is used to generate negative pressure in the pot to promote water absorption by rice grains. After boiling, the cooking cavity is sealed to generate positive pressure in the pot to increase the temperature in the pot to above 100°C to promote sufficient gelatinization of rice grains. When the positive pressure in the pot can push the gravity ball upward to open the pores, the high-temperature steam will carry liquids such as rice soup out of the pores, causing liquids such as rice soup to accumulate in the lid, which is not only difficult to clean, but also easy to damage the lid. Therefore, Chinese patent CN204765132U discloses that a perforation is provided in the lid of the electric rice cooker, and the opening and closing of the perforation is controlled by a check valve. When the positive pressure in the pot causes liquid such as rice soup to flow out of the lid through the pores, the check valve opens the perforation to ensure that the liquid such as rice soup in the lid flows back, thereby extending the service life of the lid and improving the cleanliness of the lid. However, the check valve realizes the opening and closing of the perforation through the transmission of multiple components and the expansion and contraction of multiple springs, and has a complex structure and high cost. Utility Model Content

[0004] In order to overcome at least one of the defects of the prior art described above, the utility model provides a reflux component, which has the characteristics of simple structure and low cost.

[0005] The technical solution adopted by the utility model to solve the problem is:

[0006] A reflux assembly comprises: a sealing member, a moving member that moves vertically, and a pushing member that moves horizontally;

[0007] The moving member comprises an upper moving rod, an elastic member and a lower moving rod which are arranged vertically. The pushing member is connected to the top of the upper moving rod to drive the moving member to move vertically when moving horizontally. The sealing member is connected to the bottom of the lower moving rod. A channel is opened on the upper part of the lower moving rod. The upper moving rod is arranged above the lower moving rod and extends downward into the channel. The elastic member is connected between the upper moving rod and the lower moving rod. When the upper moving rod moves downward, the elastic member is squeezed to push the lower moving rod and drive the sealing member to move downward.

[0008] A limiting structure is arranged between the upper moving rod and the lower moving rod. When the upper moving rod moves upward, the lower moving rod moves upward following the upper moving rod through the limiting structure, and drives the sealing element to move upward.

[0009] Furthermore, a limiting groove adapted to the elastic member is provided at the bottom of the channel, and the bottom end of the elastic member is arranged in the limiting groove.

[0010] Furthermore, the side wall of the upper moving rod located in the channel is provided with a radially outward convex portion, and the top inner wall of the channel is provided with a radially inward convex blocking portion, the position of the convex portion corresponds to the position of the blocking portion, and the projection of the convex portion on the horizontal plane at least partially overlaps with the projection of the blocking portion on the horizontal plane, so as to form a limiting structure through the convex portion and the blocking portion.

[0011] Furthermore, the top end of the elastic member abuts against the bottom end of the protrusion.

[0012] Furthermore, the sealing member includes a deformation portion that can be deformed vertically, the top of the deformation portion is connected to a fixed portion that is fixedly arranged, the bottom of the deformation portion is connected to a sealing portion, the lower portion of the lower moving rod sequentially passes through the inner cavity of the fixed portion and the inner cavity of the deformation portion non-contactly, and the bottom of the lower moving rod is connected to the sealing portion, and the sealing portion follows the vertical movement of the lower moving rod and causes the deformation portion to deform vertically.

[0013] Further, the sealing portion is provided with a notch facing the deformation portion, the notch is connected to the inner cavity of the deformation portion, a clamping groove connected to the notch is provided in the sealing portion, the central axis of the inner cavity of the fixing portion, the central axis of the inner cavity of the deformation portion, the central axis of the notch and the central axis of the clamping groove are in a straight line, and the projection area of ​​the clamping groove on the horizontal plane is larger than the projection area of ​​the notch on the horizontal plane;

[0014] The bottom end of the lower moving rod is provided with a clamping protrusion adapted to the clamping slot, the bottom of the lower moving rod passes through the notch to extend into the sealing part, and the clamping protrusion is arranged in the clamping slot.

[0015] Furthermore, the deformation portion is a wavy annular structure which is hollow inside and arranged vertically, and the deformation portion has at least one corrugated segment.

[0016] Furthermore, the reflux assembly also includes a pressure cover fixedly mounted on the top of the fixed part, a movable member non-contactly arranged in the inner cavity of the pressure cover, an upper portion of the upper movable rod extending upward out of the pressure cover and connected to the pushing member, and a lower portion of the lower movable rod extending downward out of the pressure cover and connected to the sealing member.

[0017] Furthermore, a radially inwardly concave fixing groove is formed at the connection between the fixing portion and the deforming portion, a fixing piece is arranged in the fixing groove, and the fixing piece and the pressure cover cooperate to fix the fixing portion.

[0018] Furthermore, a guide hole is provided on the top of the gland, and the pusher passes through the guide hole transversely and moves transversely.

[0019] Furthermore, the pushing member includes an inclined portion, which is inclined from top to bottom along its lateral moving direction. During the lateral movement of the inclined portion, the bottom end of the inclined portion abuts against the top end of the moving member.

[0020] Furthermore, the pushing member also includes two side plates, which are correspondingly arranged on the opposite side parts of the inclined portion and extend along the moving direction of the inclined portion, and both side plates extend downward to form a guide groove with an opening downward with the inclined portion, and the moving member extends upward into the guide groove to abut the inclined portion.

[0021] The utility model also provides a cooking utensil, comprising a pot cover, a pot body and an inner pot, wherein the inner pot is arranged in a containing cavity of the pot body, the pot cover is rotatably mounted on the pot body, a cooking cavity is formed between the pot cover and the inner pot, and a reflux component is mounted in the pot cover.

[0022] Furthermore, the pot cover includes an upper cover, a middle cover and a lower cover which are arranged in sequence from top to bottom. The lower cover is provided with a vertically penetrating reflux hole. The reflux assembly is installed on the middle cover and is located above the reflux hole. The position of the sealing member corresponds to the position of the reflux hole.

[0023] Beneficial effects:

[0024] The reflux assembly of the utility model drives the moving member to move vertically through the lateral movement of the pushing member to drive the sealing member to move vertically, thereby realizing the opening and closing of the sealing member to the sealing hole. The vertical movement of the moving member is realized by the transmission between the upper moving rod, the elastic member and the lower moving rod. The moving member has a small number of parts and a simple connection relationship, so that the reflux assembly has the characteristics of simple structure and convenient installation, and is conducive to reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the cooking utensil of the present utility model;

[0026] Figure 2 It is an exploded view of the cooking utensil of the present invention;

[0027] Figure 3This is an exploded view of the pot cover of the utility model;

[0028] Figure 4 It is an exploded view of the drive device and the reflux assembly of the utility model;

[0029] Figure 5 It is a cross-sectional view of the combined structure of the reflux assembly, the middle cover and the lower cover;

[0030] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0031] Figure 7 for Figure 4 sectional view of .

[0032] The meanings of the reference numerals are as follows:

[0033] 10. Reflux assembly; 20. Pot cover; 201. Upper cover; 202. Middle cover; 2021. Gravity ball assembly; 203. Lower cover; 2031. Reflux hole; 2032. Air hole; 30. Pot body; 40. Inner pot; 1. Sealing member; 11. Fixing part; 12. Deformation part; 13. Sealing part; 131. Notch; 132. Slot; 14. Fixing slot; 2. Moving member; 21. Upper moving rod; 22. Elastic member; 23. Lower moving rod; 231. Channel; 232. Limiting groove; 233. Blocking part; 234. Boss; 3. Pushing member; 31. Inclined part; 32. Side plate; 33. Guide groove; 4. Pressure cover; 41. Guide hole; 5. Driving device; 51. Push rod. DETAILED DESCRIPTION

[0034] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0037] The utility model provides a cooking utensil, which can be an electric rice cooker, a pressure cooker or the like, and can realize positive pressure, normal pressure or negative pressure operation. Figure 1 and Figure 2 The cooking utensil comprises a pot cover 20, a pot body 30 and an inner pot 40, wherein the inner pot 40 is arranged in a receiving cavity of the pot body 30, the pot cover 20 is rotatably mounted on the pot body 30, and a cooking cavity is formed between the pot cover 20 and the inner pot 40.

[0038] See also Figure 3 The pot cover 20 includes an upper cover 201, a middle cover 202 and a lower cover 203 which are arranged in sequence from top to bottom. The lower cover 203 is provided with a vertically penetrating air hole 2032. The middle cover 202 is provided with a gravity ball assembly 2021. The gravity ball assembly 2021 is located above the air hole 2032, and the position of the gravity ball assembly 2021 corresponds to the position of the air hole 2032. The gravity ball in the gravity ball assembly 2021 can open or close the air hole 2032. Since the cooking appliance has a positive pressure working state, that is, the pressure in the cooking cavity is positive pressure, when the positive pressure in the cooking cavity can push the gravity ball upward to open the air hole 2032, the high-temperature steam will carry liquid such as rice soup out of the air hole 2032, causing the liquid such as rice soup to accumulate in the pot cover 20, which is not only difficult to clean, but also easy to damage the pot cover 20.

[0039] For this purpose, see Figure 3 The lower cover 203 of the utility model is provided with a vertically penetrating reflux hole 2031, and the utility model provides a reflux assembly 10, which is installed in the pot cover 20. Specifically, the reflux assembly 10 is installed on the middle cover 202 and is located above the reflux hole 2031.

[0040] See also Figure 4 The reflux assembly includes a sealing member 1, a moving member 2 that moves vertically, and a pushing member 3 that moves horizontally. The sealing member 1 is arranged above the reflux hole 2031, and the position of the sealing member 1 corresponds to the position of the reflux hole 2031. The moving member 2 includes an upper moving rod 21, an elastic member 22, and a lower moving rod 23 that are arranged vertically. The pushing member 3 is connected to the top of the upper moving rod 21 to drive the moving member 2 to move vertically when moving horizontally. The sealing member 1 is connected to the bottom of the lower moving rod 23. A channel 231 is opened on the upper part of the lower moving rod 23. The upper moving rod 21 is arranged above the lower moving rod 23 and extends downward into the channel 231. The elastic member 22 is connected between the upper moving rod 21 and the lower moving rod 23. When the upper moving rod 21 moves downward, it squeezes the elastic member 22 to push the lower moving rod 23 and drives the sealing member 1 to move downward to seal the reflux hole 2031. A limiting structure is provided between the upper moving rod 21 and the lower moving rod 23 . When the upper moving rod 21 moves upward, the lower moving rod 23 moves upward following the upper moving rod 21 through the limiting structure, and drives the sealing member 1 to move upward to open the reflux hole 2031 .

[0041] The reflux assembly 10 of the utility model pushes the moving member 2 to move vertically through the lateral movement of the pushing member 3 to drive the sealing member 1 to move vertically, thereby realizing the opening and closing of the reflux hole 2031 by the sealing member 1. The vertical movement of the moving member 2 is realized by the transmission between the upper moving rod 21, the elastic member 22 and the lower moving rod 23. The moving member 2 has a small number of parts and a simple connection relationship, so that the reflux assembly 10 has the characteristics of simple structure and convenient installation, and is conducive to reducing costs.

[0042] It is worth noting that the upper moving rod 21 of the utility model extends downward into the channel 231 of the lower moving rod 23. The upper moving rod 21 is relatively small in size. The lateral movement of the pusher 3 can easily push the upper moving rod 21 downward and compress the elastic member 22, and the pushing force required of the pusher 3 is relatively small. In addition, when the pusher 3 removes the downward pressure on the upper moving rod 21, the elastic force of the elastic member 22 can easily push the upper moving rod 21 upward, and the elastic force required of the elastic member 22 is also relatively small. The lower moving rod 23 is relatively large in size. When it drives the sealing member 1 to move downward to seal the reflux hole 2031, the lower moving rod 23 can exert a relatively large force on the sealing member 1 to ensure the sealing performance of the sealing member 1.

[0043] Furthermore, the provision of the channel 231 can limit and guide the vertical movement of the upper moving rod 21 to ensure the stability of the vertical movement of the upper moving rod 21 .

[0044] See also Figure 6 and Figure 7 The side wall of the upper moving rod 21 located in the channel 231 is provided with a radially outwardly protruding protrusion 211, and the top inner wall of the channel 231 is provided with a radially inwardly protruding blocking portion 233. The position of the protrusion 211 corresponds to the position of the blocking portion 233, and the projection of the protrusion 211 on the horizontal plane and the projection of the blocking portion 233 on the horizontal plane at least partially overlap, so that a limiting structure is formed by the protrusion 211 and the blocking portion 233. In the process of the upper moving rod 21 moving upward, once the top end of the protrusion 211 abuts against the bottom end of the blocking portion 233, the protrusion 211 forms an upward force on the blocking portion 233, so that the lower moving rod 23 moves upward with the upper moving rod 21, so that the lower moving rod 23 can drive the sealing member 1 to move upward to open the reflux hole 2031.

[0045] The upper moving rod 21 pushes the lower moving rod 23 to move downwardly through the elastic member 22, which can be a common spring, elastic rubber pad, etc. The top of the elastic member 22 abuts against the bottom of the convex portion 211. The bottom of the channel 231 is provided with a limiting groove 232 adapted to the elastic member 22, and the bottom of the elastic member 22 is arranged in the limiting groove 232. Therefore, the elastic member 22 is limited between the convex portion 211 and the channel 231, ensuring that the elastic member 22 can be retracted vertically.

[0046] See also Figure 4 , Figure 6 and Figure 7 The sealing member 1 includes a deformable portion 12 that can be deformed vertically. The top of the deformable portion 12 is connected to a fixedly arranged fixed portion 11. The bottom of the deformable portion 12 is connected to a sealing portion 13. The lower portion of the lower moving rod 23 sequentially passes through the inner cavity of the fixed portion 11 and the inner cavity of the deformable portion 12 without contact, and the bottom of the lower moving rod 23 is connected to the sealing portion 13. The sealing portion 13 moves vertically with the lower moving rod 23 and deforms the deformable portion 12 vertically. When the lower moving rod 23 moves downward, the lower moving rod 23 pushes the sealing portion 13 to move downward to seal the reflux hole 2031. The downward movement of the sealing portion 13 drives the deformable portion 12 to extend and deform downward. When the lower moving rod 23 moves upward, the lower moving rod 23 drives the sealing portion 13 to move upward to open the reflux hole 2031. The upward movement of the sealing portion 13 drives the deformable portion 12 to compress and deform upward.

[0047] The sealing part 13 is provided with a notch 131 facing the deformation part 12, the notch 131 is connected to the inner cavity of the deformation part 12, and a slot 132 connected to the notch 131 is provided in the sealing part 13. The central axis of the inner cavity of the fixing part 11, the central axis of the inner cavity of the deformation part 12, the central axis of the notch 131 and the central axis of the slot 132 are on a straight line, and the projection area of ​​the slot 132 on the horizontal plane is larger than the projection area of ​​the notch 131 on the horizontal plane. The bottom end of the lower moving rod 23 is provided with a protrusion 234 adapted to the slot 132, the bottom of the lower moving rod 23 passes through the notch 131 to extend into the sealing part 13, and the protrusion 234 is arranged in the slot 132. The clamping arrangement of the protrusion 234 and the slot 132 makes the lower moving rod 23 firmly connected to the sealing part 13, so as to ensure that the vertical movement of the lower moving rod 23 can stably drive the vertical movement of the sealing part 13.

[0048] The deformation part 12 is a wavy annular structure with a hollow interior and arranged vertically, and the deformation part 12 has at least one corrugated section. When the lower moving rod 23 drives the sealing part 13 to move vertically, the corrugated section of the deformation part 12 is compressed or stretched. The number of corrugated sections is set according to the distance of vertical movement of the sealing part 13. When the vertical movement distance of the sealing part 13 is short, fewer corrugated sections are set, and when the vertical movement distance of the sealing part 13 is long, more corrugated sections can be set.

[0049] The reflux assembly further comprises a gland 4 fixedly mounted on the top of the fixed portion 11, a moving member 2 non-contactly mounted in the inner cavity of the gland 4, an upper portion of an upper moving rod 21 extending upwardly out of the gland 4 and connected to the pusher 3, and a lower portion of a lower moving rod 23 extending downwardly out of the gland 4 and connected to the sealing member 1. The arrangement of the gland 4 can limit and guide the vertical movement of the moving member 2 to ensure the stability of the vertical movement of the moving member 2, thereby being able to stably drive the sealing member 1 to open or close the reflux hole 2031.

[0050] A radially concave fixing groove 14 is formed at the connection between the fixing portion 11 and the deforming portion 12, and a fixing piece is arranged in the fixing groove 14, and the fixing piece and the pressure cover 4 cooperate to fix the fixing portion 11. In the utility model, the fixing piece is a middle cover 202, and the middle cover 202 is vertically provided with a through hole for the sealing member 1 to pass through, and the inner wall of the through hole of the middle cover 202 is radially convex inward to form a fixing piece and is fixed in the fixing groove 14. Thus, the pressure cover 4 and the middle cover 202 cooperate to fix the fixing portion 11.

[0051] A guide hole 41 is provided on the top of the pressure cover 4, and the pusher 3 passes through the guide hole 41 and moves laterally. The guide hole 41 is a through hole that penetrates laterally, and limits and guides the lateral movement of the pusher 3.

[0052] The pusher 3 includes an inclined portion 31, which is inclined from top to bottom along its lateral moving direction. During the lateral movement of the inclined portion 31, the bottom end of the inclined portion 31 abuts against the top end of the moving member 2. Therefore, when the pusher 3 moves laterally from the moving member 2 abutting against the higher end of its bottom to the moving member 2 abutting against the lower end of its bottom, the pusher 3 pushes the moving member 2 to move downward to drive the sealing member 1 to move downward to seal the reflux hole 2031. Conversely, the moving member 2 moves upward to drive the sealing member 1 to move upward to open the reflux hole 2031.

[0053] The pusher 3 further includes two side plates 32, which are correspondingly arranged at opposite sides of the inclined portion 31 and extend along the moving direction of the inclined portion 31, and both side plates 32 extend downward to form a guide groove 33 with the inclined portion 31, and the moving member 2 extends upward into the guide groove 33 to abut against the inclined portion 31. The formation of the guide groove 33 limits the top of the moving member 2 to prevent it from deviating and affecting the smooth transmission of the reflux assembly 10.

[0054] The lateral movement of the pusher 3 of the utility model is realized by the driving device 5, which is installed on the middle cover 202. The driving device 5 is also provided with a push rod 51 for pushing the gravity ball to open or close the air hole 2032, so that the reflux assembly 10 and the gravity ball can be jointly driven by the driving device 5. The driving device 5 includes a spring and an electromagnet, which is a common driving mechanism in cooking utensils and will not be described in detail here.

[0055] The principle of the combined drive of the utility model is as follows:

[0056] The electromagnet of the driving device 5 is energized, and the iron core of the electromagnet attracts the pusher 3 and the push rod 51 to move laterally toward the iron core, and the spring is compressed. At this time, the push rod 51 does not exert force on the gravity ball, and the gravity ball seals the air hole 2032. The lateral movement of the pusher 3 causes the top of the upper moving member 21 to gradually change from abutting the highest end of the inclined portion 31 to abutting the lowest end of the inclined portion 31, so that the inclined portion 31 pushes the upper moving member 21 to move downward to compress the elastic member 22 and push the lower moving rod 23 to move downward, so that the sealing portion 13 can be pushed downward to seal the reflux hole 2031, and the downward movement of the sealing portion 13 drives the deformation portion 12 to stretch and deform downward. At this time, the cooking cavity is in a sealed state, which is conducive to the cooking cavity to work under negative pressure or normal pressure.

[0057] When the electromagnet is powered off, the iron core loses its suction force, and the elastic force of the spring pushes the push member 3 and the push rod 51 to move in the opposite direction, and the push rod 51 applies force to the gravity ball to open the air hole 2032. The reverse lateral movement of the push member 3 causes the top of the upper moving member 21 to gradually change from the lowest end of the abutting inclined portion 31 to the highest end of the abutting inclined portion 31, and the upward elastic force of the elastic member 22 pushes the upper moving member 21 to move upward. When the upper moving member 21 moves to the convex portion 211 to abut the blocking portion 233, the lower moving member 23 moves upward with the upper moving member 21, and drives the sealing portion 13 to move upward to open the reflux hole 2031, and the upward movement of the sealing portion 13 drives the deformed portion 12 to recover to its original state or be compressed. At this time, the cooking chamber can be in a positive pressure or normal pressure working state. When the cooking cavity is in a positive pressure working state, high temperature steam carrying liquid such as rice soup flies out from the air hole 2032 and can flow back to the cooking cavity through the reflux hole 2031, thereby extending the service life of the pot cover 20 and improving the cleanliness of the pot cover 20.

[0058] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A reflux component, characterized in that: include: A sealing member (1), a moving member (2) that moves vertically, and a pushing member (3) that moves horizontally; The moving member (2) comprises an upper moving rod (21), an elastic member (22) and a lower moving rod (23) arranged vertically; the pushing member (3) is connected to the top of the upper moving rod (21) to drive the moving member (2) to move vertically when moving horizontally; the sealing member (1) is connected to the bottom of the lower moving rod (23); a channel (231) is provided on the upper part of the lower moving rod (23); the upper moving rod (21) is arranged above the lower moving rod (23) and extends downward into the channel (231); the elastic member (22) is connected between the upper moving rod (21) and the lower moving rod (23); when the upper moving rod (21) moves downward, it squeezes the elastic member (22) to push the lower moving rod (23) and drive the sealing member (1) to move downward; A limiting structure is provided between the upper moving rod (21) and the lower moving rod (23); when the upper moving rod (21) moves upward, the lower moving rod (23) moves upward following the upper moving rod (21) through the limiting structure, and drives the sealing member (1) to move upward.

2. The reflux assembly according to claim 1, characterized in that: A limiting groove (232) adapted to the elastic member (22) is provided at the bottom of the channel (231), and the bottom end of the elastic member (22) is arranged in the limiting groove (232).

3. The reflux assembly according to claim 1, characterized in that: The side wall of the upper moving rod (21) located in the channel (231) is provided with a radially outwardly protruding convex portion (211), and the top inner wall of the channel (231) is provided with a radially inwardly protruding blocking portion (233), the position of the convex portion (211) corresponds to the position of the blocking portion (233), and the projection of the convex portion (211) on the horizontal plane at least partially overlaps with the projection of the blocking portion (233) on the horizontal plane, so that the limiting structure is formed by the convex portion (211) and the blocking portion (233).

4. The reflux assembly according to claim 3, characterized in that: The top end of the elastic member (22) abuts against the bottom end of the protrusion (211).

5. The reflux assembly according to claim 1, characterized in that: The sealing member (1) comprises a deformable portion (12) capable of vertical deformation, the top of the deformable portion (12) being connected to a fixedly arranged fixed portion (11), the bottom of the deformable portion (12) being connected to a sealing portion (13), the lower portion of the lower moving rod (23) sequentially passing through the inner cavity of the fixed portion (11) and the inner cavity of the deformable portion (12) in a non-contact manner, and the bottom of the lower moving rod (23) being connected to the sealing portion (13), the sealing portion (13) following the vertical movement of the lower moving rod (23) and causing the deformable portion (12) to deform vertically.

6. The reflux assembly according to claim 5, characterized in that: The sealing portion (13) is provided with a notch (131) facing the deformation portion (12), the notch (131) is connected to the inner cavity of the deformation portion (12), a clamping groove (132) connected to the notch (131) is provided in the sealing portion (13), the central axis of the inner cavity of the fixing portion (11), the central axis of the inner cavity of the deformation portion (12), the central axis of the notch (131) and the central axis of the clamping groove (132) are on a straight line, and the projection area of ​​the clamping groove (132) on the horizontal plane is larger than the projection area of ​​the notch (131) on the horizontal plane; The bottom end of the lower moving rod (23) is provided with a locking protrusion (234) adapted to the locking groove (132); the bottom of the lower moving rod (23) passes through the notch (131) to extend into the sealing portion (13), and the locking protrusion (234) is arranged in the locking groove (132).

7. The reflux assembly according to claim 5, characterized in that: The deformation portion (12) is a wavy annular structure that is hollow inside and arranged vertically, and the deformation portion (12) has at least one corrugated section.

8. The reflux assembly according to claim 5, characterized in that: The reflux assembly also includes a pressure cover (4) fixedly pressed on the top of the fixed part (11), the moving member (2) is non-contactly arranged in the inner cavity of the pressure cover (4), the upper part of the upper moving rod (21) extends upward outside the pressure cover (4) and is connected to the pushing member (3), and the lower part of the lower moving rod (23) extends downward outside the pressure cover (4) and is connected to the sealing member (1).

9. The reflux assembly according to claim 8, characterized in that: A radially inwardly concave fixing groove (14) is formed at the connection between the fixing portion (11) and the deforming portion (12), a fixing piece is arranged in the fixing groove (14), and the fixing piece cooperates with the pressure cover (4) to fix the fixing portion (11).

10. The reflux assembly according to claim 8, characterized in that: A guide hole (41) is provided on the top of the pressure cover (4), and the pushing member (3) passes through the guide hole (41) transversely and moves transversely.

11. The reflux assembly according to claim 1, characterized in that: The pushing member (3) comprises an inclined portion (31), wherein the inclined portion (31) is inclined from top to bottom along its lateral moving direction, and during the lateral movement of the inclined portion (31), the bottom end of the inclined portion (31) abuts against the top end of the moving member (2).

12. The reflux assembly according to claim 11, characterized in that: The pushing member (3) further comprises two side plates (32), the two side plates (32) being correspondingly arranged on opposite sides of the inclined portion (31) and extending along the moving direction of the inclined portion (31), and the two side plates (32) both extend downward to enclose a guide groove (33) with the inclined portion (31) and opening downward, and the moving member (2) extends upward into the guide groove (33) to abut against the inclined portion (31).

13. A cooking utensil, characterized in that: The invention comprises a pot cover (20), a pot body (30) and an inner pot (40), wherein the inner pot (40) is arranged in a receiving cavity of the pot body (30), the pot cover (20) is rotatably mounted on the pot body (30), a cooking cavity is formed between the pot cover (20) and the inner pot (40), and the reflux assembly (10) described in any one of claims 1 to 12 is mounted in the pot cover (20).

14. The cooking device according to claim 13, characterized in that: The pot cover (20) comprises an upper cover (201), a middle cover (202) and a lower cover (203) which are arranged in sequence from top to bottom; the lower cover (203) is provided with a vertically penetrating reflux hole (2031); the reflux assembly (10) is mounted on the middle cover (202) and is located above the reflux hole (2031); the position of the sealing member (1) corresponds to the position of the reflux hole (2031).

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