CN215604957U - Cooking utensil and pot lid thereof - Google Patents

Abstract

The application provides a cooking utensil and pot cover thereof, the pot cover is provided with an exhaust pipe and a pressure limiting valve, and the top of the exhaust pipe extends into the pressure limiting valve and is provided with an exhaust port. The pressure limiting valve further comprises a bimetallic strip located right above the exhaust port, a sealing ring surrounding the exhaust port is arranged at the top of the exhaust pipe, the bimetallic strip downwards abuts against the sealing ring to seal the exhaust port in an initial state, and the bimetallic strip is separated from the sealing ring after being deformed. The pressure limiting valve of the cooker cover has the advantages of simple structure and low manufacturing cost.

Description

Cooking utensil and pot lid thereof

Technical Field

The application relates to a cooking utensil and pot lid thereof.

Background

The electric pressure cooker is a common cooking utensil for kitchen, and a cooker cover and a cooker body are locked by cooker teeth, so that a sealed cavity is formed in a cooking cavity to carry out pressure. The cooker cover is provided with an exhaust pipe and a pressure limiting valve for plugging an exhaust port of the exhaust pipe, when the pressure reaches a preset value, the pressure limiting valve opens the exhaust port to enable the cooking cavity to exhaust and reduce the pressure outwards, and when the pressure reaches a safe pressure value, the cooker cover can be opened safely. Common pressure limiting valves are a gravity pressure limiting valve and a solenoid valve, but the two pressure limiting valves have complex structures and higher manufacturing cost.

Accordingly, there is a need for improvements in existing cooking appliances and lids therefor.

SUMMERY OF THE UTILITY MODEL

The application provides a cooking utensil and pot cover thereof, has simple structure, with low costs pressure limiting valve.

Specifically, the method is realized through the following technical scheme: a pot cover of a cooking appliance is provided with an exhaust pipe and a pressure limiting valve, wherein the top of the exhaust pipe extends into the pressure limiting valve and is provided with an exhaust port, the pressure limiting valve further comprises a bimetallic strip located right above the exhaust port, the top of the exhaust pipe is provided with a sealing ring surrounding the exhaust port, the bimetallic strip is downwards abutted to press the sealing ring to seal the exhaust port in an initial state, and the bimetallic strip is separated from the sealing ring after being deformed. The pressure limiting valve of the cooker cover has the advantages of simple structure and low manufacturing cost.

According to an embodiment of this application, the blast pipe is equipped with the exhaust passage who runs through, the sealing washer is installed in the exhaust passage, the sealing washer is upwards protruding exhaust passage can ensure that bimetallic strip can closely laminate with the sealing washer, reliably seals the gas vent.

According to an embodiment of the application, a step surface is arranged in the exhaust passage, and the sealing ring is pressed against the step surface, so that the sealing ring can be conveniently fixed and positioned.

According to one embodiment of the application, the pressure limiting valve comprises a base and a valve cover, the valve cover covers the base and is connected with the base in a buckling mode, and the bimetallic strip is positioned in a limiting gap formed by the base and the valve cover. By the design, the pressure limiting valve is simple in structure and convenient to assemble.

According to an embodiment of this application, the base is equipped with annular diapire and certainly the first lateral wall that the diapire upwards extends, the valve gap is equipped with the roof and certainly the second lateral wall that the roof downwardly extending, first lateral wall with form spacing clearance between the second lateral wall from top to bottom, the edge of bimetallic strip is located in the spacing clearance. The bimetallic strip is reliably limited between the base and the valve cover.

According to an embodiment of the present application, the bimetal is in a spherical shape with a concave center and supported between the second side wall and the sealing ring in an initial state, and is in a spherical shape with a convex center and supported on the first side wall after being deformed. By adopting the spherical design, the sealing performance of the sealing ring can be improved, and the bimetallic strip can be ensured to reliably seal the exhaust port.

According to an embodiment of the present application, the first side wall includes a plurality of elastic wall, the lateral surface of elastic wall is equipped with the lug, the second side wall be equipped with lug snap-fit's knot hole. The valve cover can not be separated from the base, and the bimetallic strip can be reliably fixed.

According to one embodiment of the application, the base is provided with an annular bottom wall and a third side wall extending downwards from the bottom wall, and the third side wall is provided with a plurality of through holes. The bimetallic strip leaves the exhaust port, the exhaust port is opened, and the gas is discharged outwards through the through hole downwards.

According to an embodiment of this application, still include the upper cover, the upper cover is equipped with and holds the recess of voltage limiting valve, be equipped with the draw-in groove in the recess, the base is equipped with rotatory card and goes into the fixture block of draw-in groove. The pressure limiting valve can be conveniently assembled and fixed on the upper cover.

This application can also be realized through following technical scheme, a cooking utensil, cooking utensil includes the pot body and aforementioned pot cover. The pressure limiting valve of the cooking utensil is simple in structure and low in manufacturing cost.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

Fig. 1 is a perspective assembly view of a pot cover of a cooking appliance according to an embodiment of the present application.

Figure 2 is a partial exploded perspective view of the lid.

Fig. 3 is a perspective exploded view of the pressure limiting valve of the pot cover.

Fig. 4 is a partially enlarged view of a cross-sectional view of the pot lid.

FIG. 5 is a view similar to FIG. 4, with the exhaust pipe in an exhaust state.

Description of reference numerals:

the exhaust pipe 1, the air inlet 11, the air outlet 12, the sealing ring 13, the exhaust passage 14, the step surface 141, the pressure limiting valve 2, the base 21, the bottom wall 211, the first side wall 212, the elastic wall 213, the projection 214, the third side wall 215, the clamping block 216, the valve cover 22, the top wall 221, the second side wall 222, the step surface 223, the clamping hole 224, the bimetallic strip 23, the middle part 231, the edge 232, the cavity 24, the through hole 25, the limiting gap 26, the upper cover 3, the groove 31 and the clamping groove 32.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of devices, systems, apparatuses, and methods consistent with aspects of the present application.

Referring to fig. 1 and 2, a cooking appliance according to an embodiment of the present invention is an electric pressure cooker, which includes a cover and a pot (not shown), wherein a cooking cavity (not shown) is formed between the cover and the pot (not shown), the cover is provided with an exhaust pipe 1 and a pressure limiting valve 2, the bottom of the exhaust pipe 1 is provided with an air inlet 11 located in the cooking cavity (not shown), and the top is provided with an air outlet 12; the pressure limiting valve 2 is covered on the top of the exhaust pipe 1 and used for controlling the opening and closing of the exhaust port 12 and further controlling the exhaust action of the exhaust pipe 1.

Referring to fig. 3 to 4, the pressure limiting valve 2 includes a base 21, a valve cover 22 and a bimetal 23, the valve cover 22 covers the base 21 and forms a cavity 24 together with the base 21, and the bimetal 23 is disposed between the base 21 and the valve cover 22 and located in the cavity 24. The top of the exhaust pipe 1 extends into the cavity 24 of the pressure limiting valve 2, and the bimetallic strip 23 is positioned right above the exhaust port 12. The top of the exhaust pipe 1 is also provided with a sealing ring 13 surrounding the exhaust port 12, and the bimetallic strip 23 downwards presses the sealing ring 13 to seal the exhaust port 12 in an initial state, so that the exhaust port 12 is in a closed state, and the exhaust pipe 1 cannot exhaust outwards. The bimetal 23 is formed by bonding two kinds of metal pieces having different thermal expansion coefficients, and deforms when the temperature changes. Referring to fig. 5, when the temperature in the cooking cavity continuously rises to reach a certain value, the bimetal 23 deforms under the influence of high temperature, the bimetal 23 separates from the sealing ring 13 after deforming, the exhaust port 12 is in an open state, the pressure limiting valve 2 is further provided with a through hole 25 (detailed later), and once the exhaust port 12 is opened, the exhaust pipe 1 can exhaust the outside through the exhaust port 12 and the through hole 25. The pressure limiting valve of the cooker cover has the advantages of simple structure and low manufacturing cost.

The exhaust pipe 1 is provided with an exhaust passage 14 which penetrates through the exhaust pipe from top to bottom, the sealing ring 13 is arranged in the exhaust passage 14 from top to bottom, the top of the sealing ring 13 protrudes upwards out of the exhaust passage 14, and the outer wall of the sealing ring 13 is tightly matched with the inner wall of the exhaust passage 14. The gas can only be discharged from the opening at the top side of the exhaust pipe 1, i.e. the top side opening of the gasket 13 is the exhaust port 12 of the exhaust pipe 1. The top of the sealing ring 13 protrudes upwards to form the exhaust passage 14, so that the bimetallic strip 23 can be tightly attached to the sealing ring 13, and the bimetallic strip 23 can seal the exhaust port 12.

The exhaust passage 14 is a stepped hole with a large top and a small bottom, a stepped surface 141 is arranged in the exhaust passage, and the bottom surface of the sealing ring 13 is pressed against the stepped surface 141, so that the assembly position of the sealing ring 13 is conveniently fixed and positioned. The height of the sealing ring 13 is slightly larger than the height from the top surface of the exhaust pipe 1 to the step surface 141.

In the present embodiment, the seal ring 13 is fitted in the exhaust passage 14; as a simple alternative, the sealing ring may also surround the exhaust port in a manner of being sleeved on the outer side of the top of the exhaust pipe 1, and the sealing of the exhaust port may also be achieved by a metal sheet matching with the sealing ring.

The bimetal 23 is positioned in a limit gap 26 formed by the base 21 and the cover 22, as shown in fig. 3 and 5, and will be described in detail below.

The base 21 is provided with an annular bottom wall 211 and a first side wall 212 extending upwards from the bottom wall 211, the valve cover 22 is provided with a top wall 221 and a second side wall 222 extending downwards from the top wall 221, the valve cover 22 covers the base 21, the first side wall 212 is positioned right above the second side wall 222, the limiting gap 26 is formed between the first side wall 212 and the second side wall 222, and the edge 232 of the bimetallic strip 23 is positioned in the limiting gap 26, so that the bimetallic strip 23 is reliably limited between the base 21 and the valve cover 22, a fixing structure for fixing the bimetallic strip 23 is not required to be specially designed, and the pressure limiting valve 2 is simple in structure and convenient to assemble. In the present embodiment, the second sidewall 222 of the valve cover 22 is provided with a step surface 223 located at the inner side and a bottom surface (not numbered) located at the outer side, wherein the step surface 223 and the first sidewall 212 form the limiting gap 26, and the bottom surface (not numbered) is pressed against the bottom wall 211 of the base 21. The diameter of the bimetal 23 is larger than the outer diameter of the first sidewall 212 but slightly smaller than the outer diameter of the step surface 141.

The bimetal strip 23 is in a spherical shape with a concave center in an initial state and in a spherical shape with a convex center after deformation. In the initial state, the bimetal is supported between the second sidewall 222 and the sealing ring 13, specifically, the middle portion 231 of the bimetal 23 presses against the sealing ring 13, and the edge 232 presses against the second sidewall 222. By adopting the spherical design, the middle 231 of the bimetallic strip 23 can slightly protrude into the opening of the sealing ring 13, namely the exhaust port 12, so that the sealing performance of the sealing ring 13 is improved, and the exhaust port 12 is ensured to be reliably sealed.

The distance between the sealing ring 13 and the second side wall 222 is smaller than the height of the bimetal 23, so that the bimetal 23 is in an up-down pressed state in the initial state, and the bimetal 23 is ensured to be tightly attached to the sealing ring 13 to close the exhaust port 12. After the bimetal 23 is deformed, the edge 232 of the bimetal 23 is supported on the first side wall 212, the middle part 231 protrudes away from the sealing ring 13, a gap is formed between the sealing ring 13 and the bimetal 23, and the exhaust port 12 is opened. The second side wall 222 is not in contact with the bimetal 23 at this time, and the bimetal 23 is in a natural state.

The first side wall 212 includes a plurality of elastic walls 213, the outer side of the elastic walls 213 is provided with a protrusion 214, the second side wall 222 is provided with a fastening hole 224 that is in snap fit with the protrusion 214, the first side wall 212 and the second side wall 222 are in snap fit connection, so that the valve cover 22 is not separated from the base 21, and the edge 232 of the bimetal 23 is reliably disposed in the limiting gap 26.

During assembly, the bimetal 23 is placed on the top surface of the base 21, the valve cover 22 is covered on the base 21, the first sidewall 212 and the second sidewall 222 are buckled with each other, and the first sidewall 212 is pressed against the bottom wall 211.

The bimetal 23 has a one-piece structure and no through hole, and the top wall 221 of the valve cover 22 has no through hole, so that the gas cannot flow smoothly upward, and therefore, the through hole 25 is provided in the base 21. Referring to fig. 3 and 5, the base 21 further has a third sidewall 215 extending downward from the bottom wall 211, and the third sidewall 215 has a plurality of through holes 25. After the exhaust port 12 is opened, the gas is discharged downwardly through the through hole 25 to the outside.

Referring back to fig. 2, the pot cover includes a plastic upper cover 3, the upper cover is provided with a groove 31 for accommodating the pressure limiting valve 2, a plurality of L-shaped slots 32 are arranged in the groove 31, a plurality of clamping blocks 216 are arranged on the outer side of the base 21 of the pressure limiting valve 2, the clamping blocks 216 are rotatably clamped in the slots 32 to fix the pressure limiting valve 2 in the groove 31, and the pressure limiting valve 2 can be conveniently assembled and fixed on the upper cover 3.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

Terms such as "upper," "lower," "left," "right," "front," "back," "thickness," "radial," "axial," and the like, used herein to denote relative spatial positions, are used for ease of description to describe one feature's relationship to another feature as illustrated in the figures, and are not limited to one position or one spatial orientation. It will be understood that the spatially relative positional terms may be intended to encompass different orientations than those shown in the figures, depending on the location of the product being produced, and should not be construed as limiting. In addition, the descriptor "horizontal" as used herein is not entirely equivalent to allowing an angular tilt along a direction perpendicular to the direction of gravity.

The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items.

It should be noted that when an element is referred to as being "secured …" to another element, it can be directly on the surface of the other element or can be spaced apart from the surface of the other element. The terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected or detachably connected or integrated; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It should be understood that the terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. "plurality" or "multiple layers" and the like mean two or more.

The cooking utensil of the present application is only a preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. The utility model provides a cooking utensil's pot cover, is equipped with blast pipe (1) and pressure limiting valve (2), the top of blast pipe (1) stretches into in pressure limiting valve (2) and be equipped with gas vent (12), its characterized in that: the pressure limiting valve (2) further comprises a bimetallic strip (23) located right above the exhaust port (12), a sealing ring (13) surrounding the exhaust port (12) is arranged at the top of the exhaust pipe (1), the bimetallic strip (23) is downwards abutted to press the sealing ring (13) to seal the exhaust port (12) in an initial state, and the bimetallic strip is separated from the sealing ring (13) after being deformed.

2. The cover for a cooking appliance according to claim 1, wherein: exhaust pipe (1) is equipped with exhaust passage (14) that runs through, sealing washer (13) are installed in exhaust passage (14), sealing washer (13) upwards protrusion exhaust passage (14).

3. The cover for a cooking appliance according to claim 2, wherein: a step surface (141) is arranged in the exhaust passage (14), and the sealing ring (13) is pressed against the step surface (141).

4. The cover for a cooking appliance according to claim 1, wherein: the pressure limiting valve (2) comprises a base (21) and a valve cover (22), the valve cover (22) covers the base (21) and is connected with the base (21) in a buckling mode, and the bimetallic strip (23) is positioned in a limiting gap (26) formed by the base (21) and the valve cover (22).

5. The cover for a cooking appliance according to claim 4, wherein: the base (21) is provided with an annular bottom wall (211) and a first side wall (212) extending upwards from the bottom wall (211), the valve cover (22) is provided with a top wall (221) and a second side wall (222) extending downwards from the top wall (221), a limiting gap (26) is formed between the first side wall (212) and the second side wall (222) from top to bottom, and an edge (232) of the bimetallic strip (23) is located in the limiting gap (26).

6. The cover for a cooking appliance according to claim 5, wherein: the bimetallic strip (23) is in a spherical surface shape with a concave center in an initial state and is supported between the second side wall (222) and the sealing ring (13), and after being deformed, the bimetallic strip is in a spherical surface shape with a convex center and is supported on the first side wall (212).

7. The cover for a cooking appliance according to claim 5, wherein: the first side wall (212) comprises a plurality of elastic walls (213), a convex block (214) is arranged on the outer side surface of each elastic wall (213), and a buckling hole (224) in snap fit with the convex block (214) is formed in the second side wall (222).

8. The cover for a cooking appliance according to claim 4, wherein: the base (21) is provided with an annular bottom wall (211) and a third side wall (215) extending downwards from the bottom wall (211), and the third side wall (215) is provided with a plurality of through holes (25).

9. The cover for a cooking appliance according to claim 4, wherein: the pressure limiting valve is characterized by further comprising an upper cover (3), wherein the upper cover (3) is provided with a groove (31) for accommodating the pressure limiting valve (2), a clamping groove (32) is formed in the groove (31), and the base (21) is provided with a clamping block (216) which is clamped into the clamping groove (32) in a rotating mode.

10. A cooking appliance, characterized by: the cooking appliance comprises a pot body and a pot cover of the cooking appliance according to any one of claims 1 to 9.

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