Steam backflow prevention structure of electric pressure cooker

Abstract

The utility model provides a steam backflow prevention structure of an electric pressure cooker, which comprises a cooker cover capable of covering a cooker body of the electric pressure cooker, an exhaust valve groove is arranged at the top of the cooker cover, an exhaust valve block capable of sliding up and down relative to the exhaust valve groove is arranged in the exhaust valve groove, a containing cavity is arranged in the cooker cover, and a warping plate piece capable of rotating relative to the cooker cover is arranged in the containing cavity. The middle of the warping plate piece is rotationally connected to the cooker cover, a matching window communicated with the containing cavity is formed in the side wall of the exhaust valve groove of the cooker cover, the front portion of the warping plate piece penetrates through the matching window and is located below the exhaust valve block, and a driving assembly capable of pushing the rear portion of the warping plate piece to enable the front portion of the warping plate piece to lift the exhaust valve block upwards is further arranged in the containing cavity. The utility model aims to overcome the defects in the prior art, provides the steam backflow prevention structure of the electric pressure cooker, improves the safety and the stability of the product, and prolongs the service life of the product.

Description

Technical Field

[0001] The utility model specifically relates to an anti-steam-backflow structure for an electric pressure cooker. Background Art

[0002] In the field of kitchen appliances, due to its characteristics such as fast cooking, nutrition retention, and easy operation, the electric pressure cooker has become an indispensable kitchen device in modern families. In the past, there was a cooking appliance with the patent number CN202221125149.9 and the name of a cooking appliance capable of switching between the functions of an electric pressure cooker and a rice cooker. This kind of cooking appliance uses a dial block to push a lever to lift or lower an exhaust valve block, that is, by turning a handle, the function of the electric pressure cooker or the rice cooker can be switched. Previously, the inventor of the present invention invented an electric pressure cooker capable of switching between the functions of an electric pressure cooker and a rice cooker. This kind of electric pressure cooker rotates a dialing member to press one end of a rocker, so that the other end of the rocker is lifted to lift the exhaust valve block. However, in this traditional electric pressure cooker, generally, a placement groove for placing a pressure relief valve block is provided at the top of the pot lid, and the rocker extends into the placement groove through a pre-opened window to be able to lift the exhaust valve block. However, this structure generally forms a phenomenon of steam liquefaction and backflow during the process of steam discharging outward. Since the steam liquefies into water during the discharging process and flows back into the interior of the pot lid through the window, it will, at the least, affect the normal operation of internal components and shorten the product life, and at the worst, cause component damage and lead to product failure.

[0003] The present utility model is precisely produced based on the above deficiencies. Summary of the Utility Model

[0004] The purpose of the present utility model is to overcome the deficiencies of the prior art and provide an anti-steam-backflow structure for an electric pressure cooker to improve the safety, stability, and service life of the product.

[0005] The present utility model is realized through the following technical solutions:

[0006] An anti-steam-backflow structure for an electric pressure cooker includes a pot lid that can be covered on the pot body of the electric pressure cooker. An exhaust valve groove is provided at the top of the pot lid, and an exhaust valve block that can slide up and down relative to it is provided in the exhaust valve groove. A receiving cavity is provided inside the pot lid, and a rocker member that can rotate relative to the pot lid is provided in the receiving cavity. The middle part of the rocker member is rotationally connected to the pot lid. The pot lid is provided with a matching window communicating with the receiving cavity on the side wall of the exhaust valve groove. The front part of the rocker member passes through the matching window and is located below the exhaust valve block. A driving assembly that can push the rear part of the rocker member to lift the front part of the rocker member to lift the exhaust valve block is further provided in the receiving cavity. A sealing member that seals the matching window is provided on the pot lid. The sealing member surrounds the front part of the rocker member. The sealing member is made of a flexible deformable material.

[0007] The steam reflux prevention structure of the electric pressure cooker as described above, wherein the seal includes a seal seat and a wrapping sleeve capable of entirely wrapping the front part of the toggle piece.

[0008] The steam reflux prevention structure of the electric pressure cooker as described above, wherein the wrapping sleeve and the seal seat are an integral structure formed by an injection molding process.

[0009] The steam reflux prevention structure of the electric pressure cooker as described above, wherein the seal is an elastic structure made of silica gel material.

[0010] The steam reflux prevention structure of the electric pressure cooker as described above, wherein the lid is provided with installation slots on both sides of the fitting window, and the seal seat is provided with insertion parts for inserting into the installation slots on both sides.

[0011] The steam reflux prevention structure of the electric pressure cooker as described above, wherein the middle part of the seal seat is provided with a downward concave and easily deformable area, and the wrapping sleeve is arranged in the easily deformable area.

[0012] The steam reflux prevention structure of the electric pressure cooker as described above, wherein the lid includes a support seat and a top shell arranged on the support seat, a receiving cavity is formed between the support seat and the top shell, the exhaust valve groove is arranged on the top shell, and a lower backing plate capable of being clamped between the support seat and the top shell is arranged at the bottom of the seal seat.

[0013] The steam reflux prevention structure of the electric pressure cooker as described above, wherein the driving assembly includes a knob piece rotatably connected to the lid for manual operation, the knob piece is connected with a rotating piece, a guiding part gradually inclined upward or downward in the circumferential direction is arranged at the bottom of the rotating piece, and the guiding part abuts against the rear part of the toggle piece.

[0014] The steam reflux prevention structure of the electric pressure cooker as described above, wherein the driving assembly includes a pressing piece slidably connected to the lid in the up and down direction for manual pressing, and the bottom of the pressing piece abuts against the rear part of the toggle piece.

[0015] Compared with the prior art, the present utility model has the following advantages:

[0016] The electric pressure cooker of the present utility model is provided with a seal, which can block the fitting window. At the same time, during the swinging process of the toggle piece, the seal can deform without hindering the normal operation of the toggle piece, so that the liquefied water cannot flow into the receiving cavity through the fitting window during exhaust, enabling the parts in the receiving cavity to work normally, improving the working stability and safety of the parts, and prolonging the service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective schematic view of the electric pressure cooker of the present utility model;

[0018] Figure 2 is a partial sectional view of the electric pressure cooker of the present utility model Figure 1 ;

[0019] Figure 3 is a partial sectional view of the electric pressure cooker of the present utility model Figure 2 ;

[0020] Figure 4 is an exploded view of the seal and the rocker of the present utility model;

[0021] Figure 5 is a sectional view of the seal and the rocker of the present utility model;

[0022] Figure 6 is a structural diagram of the second embodiment of the drive assembly of the present utility model. Specific embodiments

[0023] The present utility model will be further described below with reference to the accompanying drawings:

[0024] The orientations described in the specification of the present utility model, such as "upper", "lower", "left", "right", "front", "rear", etc., are all based on the orientations of the accompanying drawings and are for the purpose of facilitating the description of the relationships between various components, and do not indicate the only or absolute positional relationships between various components. It is only one of the implementation manners for implementing the utility model and is not a limitation on its implementation manners.

[0025] Embodiment 1:

[0026] This embodiment provides an anti-steam reflux structure for an electric pressure cooker, as shown in Figure 1 and Figure 2As shown in the figure, it includes a lid 1 that can be covered on the body of an electric pressure cooker. An exhaust valve groove 11 is provided at the top of the lid 1. An exhaust valve block 2 that can slide up and down relative to it is provided in the exhaust valve groove 11. A receiving cavity 12 is provided inside the lid 1. A rocker member 3 that can rotate relative to the lid 1 is provided in the receiving cavity 12. The middle part of the rocker member 3 is rotatably connected to the lid 1. A mating window 13 communicating with the receiving cavity 12 is provided on the side wall of the exhaust valve groove 11 of the lid 1. The front part of the rocker member 3 passes through the mating window 13 and is located below the exhaust valve block 2. A driving assembly 4 that can push the rear part of the rocker member 3 to lift the front part of the rocker member 3 to raise the exhaust valve block 2 is further provided in the receiving cavity 12. Under the push of the driving assembly 4, the rocker member 3 can swing. A seal 5 covering the mating window 13 is provided on the lid 1. The seal 5 surrounds the front part of the rocker member 3. The seal 5 is made of a flexible deformable material. In this way, during the swinging process of the rocker member 3, the seal 5 can deform, which does not hinder the normal operation of the rocker member 3. At the same time, it can block the mating window 13, so that liquefied water cannot flow into the receiving cavity 12 through the mating window 13 during exhaust, enabling the parts in the receiving cavity 12 to work normally, improving the working stability and safety of the parts, and extending the service life of the product.

[0027] In this embodiment, as Figure 3 shown, the driving assembly 4 includes a knob member 41 rotatably connected to the lid 1 for manual operation. The knob member 41 is connected with a rotating member 42. A guiding portion 421 that gradually slopes upward or downward in the circumferential direction is provided at the bottom of the rotating member 42. The guiding portion 421 abuts against the rear part of the rocker member 3. In this way, when the user rotates the knob member 41, the rear part of the rocker member 3 can be pushed to swing downward through the guiding portion 421, and then the front part of the rocker member 3 swings upward, thereby lifting the exhaust valve block 2. Of course, the driving assembly 4 can also adopt other structures, referring to Embodiment Two.

[0028] As a preferred structure, as Figure 4 and Figure 5 shown, the seal 5 includes a seal seat 51 and a wrapping sleeve 52 that can entirely wrap the front part of the rocker member 3 to improve the sealing performance. Of course, the wrapping sleeve 52 can also not be provided, as long as the seal seat 51 can surround the periphery of the rocker member 3, that is, the front part of the rocker member 3 passes through the seal seat 51 and reaches the exhaust valve groove 11.

[0029] As a preferred structure, the wrapping sleeve 52 and the seal seat 51 are an integral structure made by an injection molding process. The preferred material is silicone material, which has good elasticity and ensures food safety. Of course, other elastic materials can also be used.

[0030] As a preferred structure, in order for the wrapping sleeve 52 and the materials around it to undergo elastic deformation, as Figure 4 and Figure 5 shown, a concave deformable region 54 is provided in the middle of the sealing seat 51, and the wrapping sleeve 52 is arranged in the deformable region 54. The downward concavity of the deformable region 54 makes this region more prone to deformation.

[0031] As a preferred structure, in order to facilitate the fixed connection of the seal 5 to the pot lid 1, as Figure 3 shown, mounting slots 14 are provided on both sides of the fitting window 13 of the pot lid 1, and insertion portions 53 for inserting into the mounting slots 14 are provided on both sides of the sealing seat 51. In this way, the seal 5 can be stably and firmly connected by inserting it into the mounting slots 14.

[0032] As a further optimization, as Figure 3 shown, the pot lid 1 includes a support seat and a top shell covering the support seat. An accommodation cavity 12 is formed between the support seat 101 and the top shell 102. The exhaust valve groove 11 is provided on the top shell. A lower backing plate 55 that can be clamped between the support seat 101 and the top shell 102 is provided at the bottom of the sealing seat 51, so that the lower backing plate 55 is clamped between the support seat 101 and the top shell 102, making the connection of the seal 5 more firm.

[0033] Embodiment 2:

[0034] This embodiment provides an anti-steam backflow structure for an electric pressure cooker. The difference from Embodiment 1 is that the driving assembly 4 adopts a structure different from that of Embodiment 1. As Figure 6 shown, the driving assembly 4 includes a pressing member 43 that is slidably connected to the pot lid 1 in the vertical direction for manual pressing. The bottom of the pressing member 43 abuts against the rear part of the rocker member 3. Of course, a reset member such as a pressing spring can also be provided between the pressing member 43 and the pot lid 1. However, in this embodiment, since the sealing seat 51 has elasticity, it can naturally reset.

[0035] The above are only embodiments of the present invention. Common knowledge such as specific structures and characteristics known in the art are not described in detail here. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present invention, which will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. An anti-steam backflow structure for an electric pressure cooker, comprising a pot cover (1) that can be covered on a pot body of the electric pressure cooker, the pot cover (1) being provided with an exhaust valve groove (11) on the top, an exhaust valve block (2) that can slide up and down relative to the exhaust valve groove (11) being provided in the exhaust valve groove (11), a receiving chamber (12) being provided in the pot cover (1), a seesaw member (3) that can rotate relative to the pot cover (1) being provided in the receiving chamber (12), a middle portion of the seesaw member (3) being rotatably connected to the pot cover (1), a matching window (13) that is in communication with the receiving chamber (12) being provided on a side wall of the exhaust valve groove (11) of the pot cover (1), a front portion of the seesaw member (3) passing through the matching window (13) and being located below the exhaust valve block (2), a driving component (4) that can push the rear portion of the seesaw member (3) and thereby cause the front portion of the seesaw member (3) to lift the exhaust valve block (2) upward is also provided in the receiving chamber (12), characterized in that: The pot cover (1) is provided with a sealing member (5) which is sealed on the matching window (13); the sealing member (5) surrounds the front part of the seesaw member (3); and the sealing member (5) is made of a flexible and deformable material.

2. The steam backflow prevention structure for an electric pressure cooker according to claim 1, characterized in that: The sealing member (5) comprises a sealing seat (51) and a wrapping sleeve (52) capable of wrapping the entire front portion of the rocker member (3).

3. The steam backflow prevention structure for an electric pressure cooker according to claim 2, characterized in that: The wrapping sleeve (52) and the sealing seat (51) are an integrated structure manufactured through an injection molding process.

4. The steam backflow prevention structure for an electric pressure cooker according to claim 3, characterized in that: The sealing member (5) is an elastic structure made of silicone material.

5. The steam backflow prevention structure for an electric pressure cooker according to claim 2, characterized in that: The pot cover (1) is provided with mounting slots (14) on both sides of the matching window (13), and the sealing seat (51) is provided with plug-in parts (53) for inserting into the mounting slots (14) on both sides.

6. The steam backflow prevention structure for an electric pressure cooker according to claim 2, characterized in that: The sealing seat (51) is provided with a concave deformable area (54) in the middle, and the wrapping sleeve (52) is arranged in the deformable area (54).

7. The steam backflow prevention structure for an electric pressure cooker according to claim 2, characterized in that: The pot cover (1) comprises a support seat (101) and a top shell (102) which is arranged on the support seat (101); the support seat (101) and the top shell (102) form a receiving cavity (12); the exhaust valve groove (11) is arranged on the top shell (102); and a lower pad (55) which can be clamped between the support seat (101) and the top shell (102) is provided at the bottom of the sealing seat (51).

8. The steam backflow prevention structure for an electric pressure cooker according to claim 1, characterized in that: The driving assembly (4) comprises a knob member (41) rotatably connected to the pot cover (1) for manual operation, the knob member (41) being connected to a rotating member (42), the bottom of the rotating member (42) being provided with a guide portion (421) which is gradually inclined upward or downward along the circumferential direction, the guide portion (421) being against the rear portion of the seesaw member (3).

9. The steam backflow prevention structure for an electric pressure cooker according to claim 1, characterized in that: The driving assembly (4) comprises a pressing member (43) slidably connected to the pot cover (1) in the up-down direction for being pressed by a human hand, and the bottom of the pressing member (43) abuts against the rear part of the seesaw member (3).

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