CN220706497U - Backflow sealing structure and electric rice cooker - Google Patents

Abstract

The utility model relates to the technical field of electric appliances, in particular to a backflow sealing structure and an electric cooker with the backflow sealing structure. Through the shutoff portion and cooperation shutoff piece or the removal of shutoff portion on it in order to form the shutoff state or the open state to the backward flow mouth, increased locking structure in addition, this locking structure can be to keep shutoff piece and steam valve inner wall mutually supporting in order to reach locking effect, also can be through the cooperation relation more in order to reach locking effect with the steam valve inner wall when opening the state to solve the problem that current shutoff piece drops easily and cause electrical apparatus steam valve inefficacy.

Description

Backflow sealing structure and electric rice cooker

Technical Field

The utility model relates to the technical field of electric appliances, in particular to a backflow sealing structure and an electric cooker with the same.

Background

Existing rice cookers are generally provided with steam valves. In order to prevent rice soup generated during cooking from being accumulated in the steam valve, a backflow sealing ring is arranged on the steam valve. When the electric cooker works, food or water in the electric cooker is heated to generate steam, the steam in the electric cooker generates air pressure in the rising process, and under the pushing action of the air pressure, the reflux sealing ring rises until the lower plane of the reflux sealing ring is propped against the lower plane of the lower shell of the steam valve to seal the reflux hole on the steam valve, and the steam can only be discharged from the steam discharge hole;

during the steam discharge, steam brings part of the rice water into the steam valve, and the rice water gathers at the bottom of the steam valve. When the electric cooker is finished, the air pressure disappears, the reflux sealing ring moves downwards under the action of dead weight, and the lower plane of the reflux sealing ring is separated from the lower plane of the lower shell of the steam valve, so that a reflux hole on the steam valve is opened, and rice soup flows back into the electric cooker through the reflux hole. Therefore, the user can be ensured not to have the risk of scalding caused by the outflow of rice soup when opening the upper cover of the electric cooker, and the problem that the rice soup flows onto the shell of the electric cooker or the kitchen table top is avoided.

However, such steam valves have the following disadvantages and drawbacks during actual use: to facilitate assembly of the reflux seal ring to the steam valve lower housing, the reflux seal ring mounting flange must not have a diameter that is too large as the diameter of the mounting hole in the steam valve lower housing. Because the material of backward flow sealing washer is the flexible glue, when the user uses the in-process of electric rice cooker or washs the steam valve, backward flow sealing washer can deviate from in the steam valve inferior valve when receiving the pulling force. Because the external dimension of the backflow sealing valve is not big, the backflow sealing ring is easy to lose under the condition that a user does not pay attention to, and therefore the problems of safety and inconvenient use are brought to the user.

Disclosure of Invention

The utility model provides a backflow sealing structure which can effectively solve the problem that a backflow sealing ring is easy to fall off from a steam valve.

Based on the above, the utility model provides a backflow sealing structure, which comprises a steam valve and a plugging piece arranged on the steam valve, wherein a backflow cavity is arranged in the steam valve, a backflow port and a steam outlet are arranged in the backflow cavity, a plugging part is arranged on the plugging piece, the plugging part can move relative to the backflow port to form a plugging state for plugging the backflow port or an opening state for conducting the backflow port, and a locking structure is also arranged on the plugging piece, and is matched with the inner wall of the steam valve to prevent the plugging piece from falling off from the steam valve at least in the opening state.

According to the backflow sealing structure, the backflow port is formed in the bottom of the backflow cavity, the blocking portion is located below the backflow port, and in the blocking state, the blocking portion covers the lower side of the backflow port or is in a wrapping shape and abuts against the periphery of the lower side of the backflow port.

The backflow sealing structure is characterized in that a through hole is formed in the middle of the backflow port, the plugging piece penetrates through the through hole, a mounting flange is arranged at the part, located on the upper side of the backflow port, of the plugging piece, a conical guide surface is arranged on the periphery of the mounting flange, an abutting portion with the outer diameter larger than that of the through hole is arranged on the lower side of the mounting flange, the anti-loosening structure is arranged on the bottom surface of the abutting portion, and a connecting structure matched with the anti-loosening structure is arranged on the outer side of the through hole.

According to the backflow sealing structure, the anti-loosening structure is the annular groove which is recessed upwards, the protrusion opposite to the annular groove is arranged on the outer side of the through hole, and when the plugging piece is in the open state, the protrusion is embedded into the annular groove when the mounting flange moves downwards.

The backflow sealing structure comprises the sealing parts, wherein the sealing parts are elastic sheets, the peripheral side walls below the backflow openings are provided with the radially arranged mounting holes, the sealing parts penetrate through the mounting holes, the elastic sheets are bowl-shaped and have elasticity towards the direction of the backflow openings and are propped against the periphery of the bottoms of the backflow openings, the anti-loose structures are first flanges and second flanges which are located on two sides of the mounting holes and are larger than the mounting holes in outer diameter, the sealing parts are connected to one side of the second flanges, conical surface guiding parts are arranged on the outer peripheral surfaces from the tail parts of the sealing parts to the first flanges, and positioning columns with outer diameters equal to or smaller than that of the mounting holes are arranged between the first flanges and the second flanges.

The backflow sealing structure is characterized in that a backflow concave position is arranged in the backflow cavity, the backflow port is radially arranged on the side wall of the backflow concave position, the blocking portion is located in the backflow concave position and can cover the upper end opening of the backflow concave position, a bottom hole is formed in the bottom of the backflow concave position, the blocking piece penetrates through the bottom hole, the outer diameter of the blocking portion is matched with or approximately equal to the inner diameter of the backflow concave position, the anti-loosening structure is the lower side face of the top, and when the anti-loosening structure is in an opening state, the lower side face of the top abuts against the upper side face of the bottom of the backflow concave position.

According to the reflux sealing structure, the part of the plugging piece, which is positioned outside the bottom hole, is further provided with the limiting convex ring, and the outer diameter of the limiting convex ring is larger than that of the bottom hole.

In the reflux sealing structure, limit stops extending towards the middle are further arranged on two sides of the upper end opening of the reflux concave position.

According to the reflux sealing structure, the plugging piece, the plugging part and the anti-loosening structure are integrally formed.

The utility model also provides an electric cooker, which comprises an electric cooker body, wherein the electric cooker body is provided with the reflux sealing structure.

Compared with the prior art, the utility model has the following advantages:

1. according to the utility model, the blocking part on the blocking part is matched with the blocking part or the movement of the blocking part to form a blocking state or an opening state of the reflux port, and in addition, the anti-loosening structure is additionally arranged, and the anti-loosening structure can be used for keeping the blocking part and the inner wall of the steam valve to be mutually matched so as to achieve an anti-loosening effect, and can also be used for achieving the anti-loosening effect through a more matching relation with the inner wall of the steam valve in the opening state, so that the problem that the steam valve of an electric appliance is invalid due to the fact that the existing blocking part is easy to fall off is solved.

2. The utility model also provides an electric cooker, which has the reflux sealing structure, so that the electric cooker has corresponding advantages.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a first embodiment of the present closure;

FIG. 2 is a schematic illustration of the engagement of FIG. 1 with a steam valve;

FIG. 3 is a schematic view of a first embodiment of a closure in a closed position;

FIG. 4 is a schematic view of an embodiment of an opening state of the closure;

FIG. 5 is a schematic view of a second embodiment of a closure;

FIG. 6 is a schematic illustration of a second embodiment of a closure in a closed position;

FIG. 7 is a schematic view of a second embodiment of a closure in an open position;

FIG. 8 is a schematic view of a third embodiment of a closure;

FIG. 9 is a schematic view of a third embodiment of a closure in a closed position;

FIG. 10 is a schematic view of a third embodiment of a closure in an open position;

FIG. 11 is a schematic view of a fourth embodiment of a closure;

FIG. 12 is a schematic view of a fourth embodiment of a closure in a closed position;

FIG. 13 is a schematic illustration of a closure embodiment in a four-open state;

FIG. 14 is a schematic view of FIG. 11 mated with a steam valve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 14, an embodiment of the present utility model provides a backflow sealing structure, which is characterized by comprising a steam valve 9 and a blocking piece 1 installed on the steam valve 9, wherein a backflow cavity 901 is provided in the steam valve 9, a backflow port 91 and a steam outlet 92 are provided in the backflow cavity 901, a blocking part 2 is provided on the blocking piece 1, the blocking part 2 can move relative to the backflow port 91 to form a blocking state for blocking the backflow port 91 or an open state for conducting the backflow port 91, and a locking structure is further provided on the blocking piece 1, and at least in the open state, the locking structure cooperates with an inner wall of the steam valve 9 to prevent the blocking piece 1 from falling off from the steam valve 9. According to the utility model, the blocking part on the blocking part is matched with the blocking part or the movement of the blocking part to form a blocking state or an opening state of the reflux port, and in addition, the anti-loosening structure is additionally arranged, and the anti-loosening structure can be used for keeping the blocking part and the inner wall of the steam valve to be mutually matched so as to achieve an anti-loosening effect, and can also be used for achieving the anti-loosening effect through a more matching relation with the inner wall of the steam valve in the opening state, so that the problem that the steam valve of an electric appliance is invalid due to the fact that the existing blocking part is easy to fall off is solved.

In particular, various embodiments of the closure are provided in the present utility model, wherein in some embodiments, as shown in fig. 1-7, the return port 91 is provided at the bottom of the return chamber 901. For the return port 91 of this arrangement. In this embodiment, the blocking portion 2 is located below the backflow port 91, and in the blocking state, the blocking portion 2 covers the lower side of the backflow port 91 or is covered and abuts against the periphery of the lower side of the backflow port 91.

As shown in fig. 1 to 4, a first embodiment of the plugging member according to the present utility model is: the middle part of the backflow port 91 is provided with a through hole 910, the plugging piece 1 passes through the through hole 910, the part of the plugging piece 1, which is positioned at the upper side of the backflow port 91, is provided with a mounting flange 3, the periphery side of the mounting flange 3 is a conical guide surface, the lower side of the mounting flange 3 is provided with a butt part 31 with the outer diameter larger than that of the through hole 910, the anti-loose structure is arranged on the bottom surface of the butt part 31, and the outer side of the through hole 910 is provided with a connecting structure matched with the anti-loose structure. The anti-loosening structure is added to the abutting portion 31 of the conventional plugging member 1, and the connecting structure is required to be arranged outside the through hole 910, so that the connecting structure and the anti-loosening structure can be matched to form an anti-loosening effect.

Specifically, the locking structure is an upward concave annular groove 41, a protrusion 411 opposite to the annular groove 41 is arranged on the outer side of the through hole 910, and the protrusion 411 is embedded into the annular groove 41 when the mounting flange 3 moves down when the plugging piece 1 is in the open state. The principle is as follows: during operation, food or water in the steam valve is heated, the steam in the pot generates air pressure in the rising process, and under the pushing action of the air pressure, the plugging piece 1 rises until the upper plane of the plugging part 2 of the plugging piece abuts against the lower plane of the backflow port 91 to seal the backflow port 91 on the steam valve, and the steam can only be discharged from the steam outlet 92; during the steam discharge, steam brings part of the rice soup into the steam valve, and the rice soup is collected in the return cavity 901 and flows to the bottom of the return opening under the action of the steam valve. When the electric cooker is finished, steam in the electric cooker is emptied, air pressure disappears, the plugging piece 1 moves downwards under the action of dead weight, and the plugging part 2 is separated from the lower plane of the backflow port 91, so that the backflow port 91 on the steam valve is opened, and rice soup flows back into the electric cooker through the backflow port 91. When the plugging piece 1 moves downwards, the abutting part 31 is provided with a circle of annular groove 41 which can be sleeved on the bulge 411 at the outer side of the through hole 910, so that the user can be ensured not to have the risk of scalding caused by rice soup flowing out when opening the upper cover of the electric cooker, and the problem that the rice soup flows onto the shell of the electric cooker or the kitchen table top is avoided.

The purpose of the tapered guide surface on the circumferential side of the mounting flange 3 is to increase the difference in diameter between the mounting flange 3 and the mounting of the closure member 1 through the through hole 910, and to increase the interference between the mounting flange and the through hole 910. Due to the existence of the conical surface, the installation flange is easier to guide into the steam valve when the plugging piece 1 is installed, the assembly difficulty is reduced, and the plugging piece 1 is prevented from being broken during assembly. Meanwhile, due to the increased interference between the mounting flange and the through hole 910, the user cannot easily pull the reflux sealing ring out of the steam valve lower shell when using the electric cooker.

The purpose of adding the bulge 411 at the position of the steam valve through hole 910 and adding the annular groove 41 on the plugging piece 1 is that the plugging piece 1 can move downwards when being pulled, at this time, the annular groove 41 on the plugging piece 1 can be buckled on the bulge 411, and the inverted buckle structure can prevent a user from easily pulling out the plugging piece 1 from the steam valve when the electric cooker is used.

As shown in fig. 5 to 7, a second embodiment of the plugging member of the present utility model is: the blocking part 2 is a spring plate 42, a radially arranged mounting hole 93 is formed in the peripheral side wall below the backflow port 91, the blocking piece 1 penetrates through the mounting hole 93, the spring plate 42 is bowl-shaped and can prop against the periphery of the bottom of the backflow port 91, the anti-loosening structure is a first flange 51 and a second flange 52 which are positioned on two sides of the mounting hole 93 and have outer diameters larger than those of the mounting hole 93, the blocking part 2 is connected to one side of the second flange 52, a conical surface guide part is arranged on the outer peripheral surface from the tail of the blocking piece 1 to the first flange 51, and a positioning column 53 with outer diameters equal to or smaller than those of the mounting hole 93 is arranged between the first flange 51 and the second flange 52. Of course, the elastic piece may be provided to have elasticity in the direction of the return port 91. The principle is as follows: when the electric cooker works, food or water in the electric cooker is heated to generate steam, the steam in the electric cooker generates air pressure in the rising process, under the pushing action of the air pressure, the elastic sheet 42 rises until the elastic sheet abuts against the bottom surface of the backflow port 91, at the moment, the elastic sheet blocks an opening on the bottom surface of the steam valve, and the steam can only be discharged from the steam discharge hole;

during the steam discharge, part of the rice soup is brought into the steam valve, and the rice soup is collected at the bottom of the steam valve under the action of the steam valve. When the electric cooker is finished, steam in the electric cooker is emptied, air pressure disappears, the elastic sheet moves downwards under the action of gravity of rice soup and self weight of the elastic sheet 42, and the elastic sheet is separated from the bottom surface of the backflow port 91, so that the backflow port 91 on the steam valve is opened, and the rice soup flows back into the electric cooker through the backflow port 91 on the bottom surface of the steam valve.

Because the plugging piece 1 and the steam valve do not need to be in sliding fit, the locking structure of the plugging piece 1 is matched with the mounting hole 93 through the positioning column 53, and the two sides of the positioning column 53 are respectively provided with one positioning flange, namely the first flange 51 and the second flange 52, so that the plugging piece 1 is clamped on the steam valve by the steam valve, and a user cannot easily pull the plugging piece 1 out of the lower shell of the steam valve when using the electric cooker, thereby preventing the plugging piece 1 from easily loosening.

In some embodiments of the present utility model, as shown in fig. 8 to 14, a backflow recess 902 is disposed in the backflow chamber 901, and the backflow port 91 is disposed on a sidewall of the backflow recess 902 in a radial direction.

For the mode that the reflux mouth 91 radially sets up, shutoff portion 2 is located the back flow concave position 902 can be covered the upper end opening of back flow concave position 902 or keep off in the back flow mouth 91 outside and make the back flow mouth 91 shutoff, back flow concave position 902 bottom is equipped with bottom hole 9021, shutoff piece 1 passes bottom hole 9021, shutoff portion 2 outside diameter with back flow concave position 902 internal diameter looks adaptation or approximately equal top 61, locking structure is the downside of top 61, and when opening the state, the downside of top 61 with the bottom upside of back flow concave position 902 offsets.

Specifically, as shown in fig. 8 to 10, a third embodiment of the plugging member according to the present utility model is as follows: the part of the plugging piece 1 located outside the bottom hole 9021 is further provided with a limiting convex ring 71, and the outer diameter of the limiting convex ring 71 is larger than that of the bottom hole 9021. The principle is as follows: when the electric cooker works, food or water in the electric cooker is heated, water vapor in the electric cooker generates air pressure in the rising process, under the pushing action of the air pressure, the blocking piece 1 rises until the limiting convex ring 71 is propped against the lower plane of the bottom hole 9021, at the moment, the top 61 on the blocking piece 1 blocks the backflow port 91, and the vapor can only be discharged from the vapor discharge hole; the diameter D of the return port 91 is not less than 3mm in this embodiment.

In addition, during the steam discharge process, steam can bring part of rice soup into the steam valve, and the rice soup is collected at the bottom of the steam valve under the action of the steam valve. When the electric cooker is finished, steam in the electric cooker is emptied, the air pressure disappears, the plugging piece 1 moves downwards under the action of dead weight, the top 61 of the plugging piece is separated from the steam return port 91, and therefore the return port 91 is opened, and rice soup flows back into the electric cooker through the return port 91.

In addition, in the embodiment of the present utility model, the thickness of the top 61 is not less than 4mm, so as to increase the strength of the sealing member 1, and thus, a user cannot pull the sealing member 1 out of the steam valve when using the electric cooker, thereby preventing the sealing member 1 from easily loosening.

The fourth embodiment of the plugging piece is as follows: as shown in fig. 11 to 14, the two sides of the upper end opening of the backflow recess 902 are further provided with a limit stop 9022 extending toward the middle. In the sealed state, the limit stoppers 9022 on both sides abut against the upper end surface of the top portion 61, so that the sealing portion 2 is sealed to the upper end opening of the reflow recess 902. In this embodiment, the plug 2 is the upper end of the top 61, and the principle of this embodiment is substantially the same as that of the third embodiment, except that after the plug 1 is mounted to the steam valve, it is clamped in the backflow recess 902 by the limit stop 9022. The top 61 is arranged on the plugging piece 1, the thickness of the top 61 is not less than 2mm, and the purpose is to increase the strength of the plugging piece 1, so that the plugging piece 1 can be limited from moving upwards without arranging a limiting convex ring 71 on the plugging piece 1, and the plugging piece 1 can be more simply structured by arranging the top 61 and a limiting stop 9022, and the thickness of the top 61 can be further reduced to meet the requirement of use. Thus, a user cannot easily pull out the plugging piece from the steam valve when using the electric rice cooker, and the problem that the plugging piece is easy to loosen is prevented.

In addition, in the embodiment of the utility model, the plugging piece 1, the plugging part 2 and the anti-loosening structure are integrally formed. And an elastic material is adopted to facilitate the installation and manufacture of the plugging piece 1.

The utility model also provides an electric cooker, which comprises an electric cooker body, wherein the electric cooker body is provided with the reflux sealing structure. It also has corresponding advantages due to the above-mentioned reflow sealing structure.

It should be understood that the terms "first," "second," and the like are used herein to describe various information, but such information should not be limited to these terms, which are used merely to distinguish one type of information from another. For example, a "first" message may also be referred to as a "second" message, and similarly, a "second" message may also be referred to as a "first" message, without departing from the scope of the utility model. Furthermore, references to orientations or positional relationships of the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc. are based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

While the foregoing is directed to the preferred embodiments of the present utility model, it should be noted that modifications and variations could be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and variations are to be regarded as being within the scope of the utility model.

Claims (10)

1. The utility model provides a backward flow seal structure, its characterized in that includes steam valve (9) and installs shutoff piece (1) on steam valve (9), be equipped with backward flow chamber (901) in steam valve (9), be equipped with backward flow mouth (91) and steam outlet (92) in backward flow chamber (901), be equipped with shutoff portion (2) on shutoff piece (1), shutoff portion (2) can be relative backward flow mouth (91) activity in order to form the shutoff state of shutoff backward flow mouth (91) or make the open state that backward flow mouth (91) switched on, just still be equipped with locking structure on shutoff piece (1), at least when open state, locking structure and steam valve (9) inner wall cooperation are in order to prevent shutoff piece (1) from coming off from steam valve (9).

2. The backflow sealing structure according to claim 1, wherein the backflow port (91) is formed in the bottom of the backflow cavity (901), the blocking portion (2) is located below the backflow port (91), and in the blocking state, the blocking portion (2) covers the lower side of the backflow port (91) or is covered to abut against the periphery of the lower side of the backflow port (91).

3. The backflow sealing structure according to claim 2, wherein a through hole (910) is formed in the middle of the backflow port (91), the plugging piece (1) penetrates through the through hole (910), a mounting flange (3) is arranged at the part, located on the upper side of the backflow port (91), of the plugging piece (1), the periphery of the mounting flange (3) is a conical guide surface, the lower side of the mounting flange (3) is an abutting portion (31) with the outer diameter larger than that of the through hole (910), the anti-loosening structure is arranged on the bottom surface of the abutting portion (31), and a connecting structure matched with the anti-loosening structure is arranged on the outer side of the through hole (910).

4. A backflow seal structure according to claim 3, wherein the locking structure is an upwardly recessed annular groove (41), a protrusion (411) opposite to the annular groove (41) is provided on the outside of the through hole (910), and the protrusion (411) is inserted into the annular groove (41) when the mounting flange (3) moves downward in the open state of the closure member (1).

5. The backflow sealing structure according to claim 2, wherein the blocking portion (2) is a spring plate (42), a radial installation hole (93) is formed in the circumferential wall below the backflow port (91), the blocking piece (1) penetrates through the installation hole (93), the spring plate (42) is bowl-shaped and can prop against the periphery of the bottom of the backflow port (91), the anti-loosening structure is a first flange (51) and a second flange (52) which are located on two sides of the installation hole (93) and have an outer diameter larger than that of the installation hole (93), the blocking portion (2) is connected to one side of the second flange (52), a conical surface guide portion is arranged on the outer circumferential surface from the tail portion of the blocking piece (1) to the first flange (51), and a positioning column (53) with an outer diameter equal to or smaller than that of the installation hole (93) is arranged between the first flange (51) and the second flange (52).

6. The backflow sealing structure according to claim 1, wherein a backflow concave position (902) is arranged in the backflow cavity (901), the backflow port (91) is arranged on the side wall of the backflow concave position (902) in the radial direction, the blocking portion (2) is located in the backflow concave position (902) and can cover an upper end opening of the backflow concave position (902) or block the outer side of the backflow port (91) to enable the backflow port (91) to be blocked, a bottom hole (9021) is formed in the bottom of the backflow concave position (902), the blocking piece (1) passes through the bottom hole (9021), the anti-loosening structure is that the lower side face of the top (61) of the blocking piece (1) is abutted against the upper side face of the bottom of the backflow concave position (902) in the opening state.

7. The backflow sealing structure according to claim 6, wherein a limiting convex ring (71) is further arranged on the portion, located outside the bottom hole (9021), of the plugging piece (1), and the outer diameter of the limiting convex ring (71) is larger than that of the bottom hole (9021).

8. The reflow sealing structure according to claim 6, wherein the reflow concave portion (902) is further provided with a limit stop (9022) extending toward the middle on both sides of the upper end opening, and in the sealed state, the limit stop (9022) on both sides abuts against the upper end surface of the top portion (61) to seal the sealing portion (2) to the upper end opening of the reflow concave portion (902).

9. A reflux sealing structure according to any one of claims 1-8, characterized in that the closure member (1), the closure part (2), and the locking structure are integrally formed.

10. An electric rice cooker, characterized by comprising an electric rice cooker body, wherein the electric rice cooker body is provided with a reflux sealing structure as claimed in any one of claims 1 to 9.