CN112438592A

CN112438592A - Cooking utensil and exhaust assembly thereof

Info

Publication number: CN112438592A
Application number: CN201910806953.XA
Authority: CN
Inventors: 吴飞; 蔡何意
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Current assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2021-03-05

Abstract

The application provides a cooking utensil and an exhaust assembly thereof, wherein the cooking utensil comprises a pot body and a pot cover, and an inner pot is arranged in the pot body; the cooker cover is covered on the cooker body and forms a cooking cavity together with the inner cooker, and the cooker cover is provided with an exhaust assembly. The exhaust component comprises an exhaust pipe and a pressure limiting valve. The top end of the exhaust pipe is provided with an exhaust port, the pressure limiting valve comprises an accommodating cavity and a valve core positioned in the accommodating cavity, the top of the exhaust pipe extends into the accommodating cavity, and the valve core can block or open the exhaust port. The containing cavity comprises a buffer cavity and a guide surface positioned at the bottom side of the buffer cavity, the highest point of the guide surface is higher than the top surface of the exhaust pipe, the guide surface guides the airflow flowing out of the exhaust port into the flushing cavity, and the pressure limiting valve is further provided with an exhaust hole communicated with the containing cavity. This application cooking utensil utilizes the cushion chamber to provide cushioning effect for the air current, avoids the air current backward flow to scurry into the pot cover inside, causes the pot cover to produce comdenstion water scheduling problem.

Description

Cooking utensil and exhaust assembly thereof

Technical Field

The present application relates to a cooking appliance having an exhaust assembly.

Background

The cover of the electric pressure cooker is usually provided with an exhaust component, and the exhaust component can automatically exhaust outwards when the air pressure in the cooking cavity of the electric pressure cooker exceeds a safety range. It is common to use a gravity type pressure limiting valve, which is pressed on the exhaust pipe by its own weight to realize the pressure limiting function. The exhaust assembly comprises an exhaust rod and a pressure limiting valve, the exhaust rod extends into the exhaust assembly, and a valve core of the pressure limiting valve is a spherical heavy hammer generally and is used for plugging an exhaust port of the exhaust pipe. The pressure limiting valve is jacked up by the exhaust rod, the spherical heavy hammer leaves the exhaust port, and the exhaust pipe exhausts outwards, so that the automatic exhaust function of the pressure cooker is realized. However, the internal space of the existing pressure limiting valve generally adopts a straight wall structure, so that the exhaust space is small, the exhaust angle of the straight wall and the exhaust pipe is inconsistent, the gas flows irregularly in the pressure limiting valve, part of the gas flows into the steam cover or even into the upper cover, and the high-temperature gas is cooled to cause the generation of condensed water in the steam cover or the upper cover and the over-high temperature of the upper cover.

Accordingly, there is a need for improvements to existing cooking appliances.

Disclosure of Invention

The application provides a cooking utensil, its exhaust subassembly has good exhaust performance.

Specifically, the method is realized through the following technical scheme: an exhaust assembly of a cooking appliance comprises an exhaust pipe and a pressure limiting valve. The top end of the exhaust pipe is provided with an exhaust port, the pressure limiting valve comprises an accommodating cavity and a valve core positioned in the accommodating cavity, the top of the exhaust pipe extends into the accommodating cavity, and the valve core can block or open the exhaust port. The containing cavity comprises a buffer cavity and a guide surface positioned at the bottom side of the buffer cavity, the highest point of the guide surface is higher than the top surface of the exhaust pipe, the guide surface guides the airflow flowing out of the exhaust port into the flushing cavity, and the pressure limiting valve is further provided with an exhaust hole communicated with the containing cavity. This application cooking utensil utilizes the cushion chamber to provide cushioning effect for the air current, avoids the air current backward flow to scurry into the pot cover inside, causes the pot cover to produce comdenstion water scheduling problem.

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 cross-sectional view of a pot cover of a cooking appliance according to an embodiment of the present application.

FIG. 2 is an enlarged fragmentary view taken at the circle in FIG. 1 with the exhaust assembly in an initial position.

FIG. 3 is similar to FIG. 2 with the exhaust assembly in an open position.

FIG. 4 is an exploded perspective view of the pressure limiting valve of the vent assembly.

Figure 5 is a partial exploded perspective view of the lid.

Description of reference numerals:

the exhaust pipe 1, the exhaust port 11, the inclined surface 111, the air inlet 12, the pressure limiting valve 2, the accommodating cavity 20, the guide surface 201, the buffer cavity 202, the bottom cavity 203, the bottom end wall 204, the top wall 205, the exhaust hole 206, the valve core 21, the valve body 22, the valve seat 23, the valve cover 24, the surface cover 3, the concave part 31, the mounting hole 310, the sealing gasket 32, the steam valve 4, the air outlet hole 41, the lining cover 5, the stainless steel inner cover 6, the exhaust rod 7 and the tail end 71.

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 certain aspects of the present application, as detailed in the appended claims.

Referring to fig. 1, the present application provides a cooking appliance, which includes a pot body and a pot cover, wherein the pot cover is covered on the pot body. An inner pot is arranged in the pot body, and the pot cover and the inner pot jointly form a cooking cavity. The main improved structure of the utility model is on the cover, the pan body can be conventional structure, so the structure of the pan body and the inner pan is omitted in the attached drawings.

Referring to fig. 2 and 3, in the present embodiment, the cooking appliance is an electric pressure cooker, and the cooker lid is provided with an exhaust assembly, which includes an exhaust pipe 1 and a pressure limiting valve 2.

Exhaust pipe 1, the top has gas vent 11, and the bottom is equipped with air inlet 12, and air inlet 12 and culinary art chamber intercommunication can the outer gas of discharging the culinary art intracavity. The pressure limiting valve 2 comprises a containing cavity 20 and a valve core 21 positioned in the containing cavity 20, the top of the exhaust pipe 1 extends into the containing cavity 20, and the valve core 21 can block or open the exhaust port 11. Referring to fig. 2, during the pressing-up process of the cooking appliance, in order to keep the cooking cavity sealed for continuous pressing-up, the valve core 21 blocks the exhaust port 11 of the exhaust pipe 1, and the exhaust pipe 1 is prevented from exhausting to the outside. When the pressure in the cooking cavity reaches a set value or a safety value, one end of the pressure limiting valve 2 is tilted, the valve core 21 moves along with the pressure limiting valve to open the exhaust port 11, and the cooking cavity exhausts air outwards through the exhaust pipe 1.

In the prior art, the side walls of the accommodating cavity 20 of the pressure limiting valve 2 are all straight walls, and airflow is easy to flow into the cooker cover after being blocked. In order to avoid this problem, the receiving chamber 20 of the pressure limiting valve 2 of the cooking appliance of the present application comprises a buffer chamber 202 and a guide surface 201 located at the bottom side of the buffer chamber 202, the highest point of the guide surface 201 is higher than the top surface of the exhaust pipe 1, and the guide surface 201 can guide the air flow flowing out from the exhaust port 11 upwards into the buffer chamber 202. The pressure-limiting valve 2 is also provided with a venting hole 206 communicating with the receiving chamber 20. The air flow flowing into the buffer chamber 202 is discharged outward from the discharge hole 206. This application cooking utensil utilizes the cushion chamber to provide cushioning effect for the air current, avoids the air current backward flow to scurry into the pot cover inside, causes the pot cover high temperature, produces comdenstion water scheduling problem.

Wherein the lowest point of the guide surface 201 is lower than the top surface of the exhaust pipe 1. Therefore, the air flow from the exhaust port 11 of the exhaust pipe 1 is generally upward due to the high pressure in the cooking cavity, and even if there is a side-rushing air flow, the guiding function can be provided due to the lower position of the guiding surface 201, so as to prevent the air flow from flowing downward. It will be appreciated that the highest point of the guide surface 201 is higher than the top surface of the exhaust pipe 1, otherwise no effective guiding action will be provided.

In this embodiment, the guiding surface 201 is an inclined surface, and the guiding surface 201 has only one inclined angle, as a simple alternative, the guiding surface 201 may also have a plurality of inclined angles, that is, the guiding surface 201 includes a plurality of sections of inclined surfaces, which can also achieve the guiding function; the guide surface 201 may be stepped, and guide may be achieved in the same manner.

As one embodiment, the inclination angle of the guide surface 201 is set to 15 degrees to 65 degrees. The angle of 15-65 degrees is a reasonable angle, if the angle is too large, the air flow approaches to a straight wall, the air flow is disturbed and flows downwards after being blocked, and if the angle is too small, the air flow cannot be effectively guided upwards and discharged outwards. Wherein, an inclination angle of 45 degrees is a preferable angle of the guide surface 201, and the length of the guide surface 201 is 3 mm. The height of the guide surface 201 is 1mm to 10mm, which can effectively guide the airflow.

In one embodiment, the exhaust port 11 of the exhaust pipe 1 is also provided with an inclined surface 111 for guiding the airflow. The inclined surface 111 of the exhaust port 11 may also guide the airflow upward to be discharged out of the cooking appliance.

With continued reference to fig. 2 and 3, the receiving chamber 20 further includes a bottom chamber 203 located below the buffer chamber 202, the bottom chamber 203 having a diameter close to the diameter of the exhaust pipe 1 and restricting the downward flow of the gas flow. The buffer chamber 202 has an extension relative to the bottom chamber 203, and the space of the buffer chamber 202 is larger than the space of the bottom chamber 203 to accommodate the air flow, provide a buffer function, and avoid the air flow rushing out to scald the user. The bottom of the buffer chamber 202 is provided with a bottom wall 204 and the guide surface 201 is located between the buffer chamber 202 and the bottom chamber 203 and connects the bottom wall 204 upwards and the side wall of the bottom chamber 203 downwards.

The pressure limiting valve 2 is further provided with a top wall 205, and a vent hole 206 is formed in the top wall 205 and penetrates the top wall 205. The top wall 205 is provided with a plurality of exhaust holes 206 arranged in a ring shape, the exhaust holes 206 at least partially overlap with the horizontal projection of the guide surface 201, and the horizontal projection of the exhaust holes 206 is positioned in the horizontal projection of the buffer cavity 202. The air flow guided by the guide surface 201 can be mostly discharged out of the cooking appliance directly through the exhaust holes 206, and the air flow can be more effectively discharged. The air flow flowing into the buffer chamber 202 may be exhausted outward from the exhaust hole 206.

Referring to fig. 4, the pressure limiting valve 2 includes a valve body 22, a valve seat 23 and a valve cover 24, the valve body 22 is located at the innermost side, the valve seat 23 is injection molded on the valve body 22, and the valve cover 24 is further injection molded on the valve seat 23. In the present embodiment, the valve body 22 is annular, and the valve seat 23 covers the top surface, the inner surface, the outer surface, and a part of the bottom surface of the valve body 22; the valve cover 24 covers the top, outer and bottom surfaces of the valve seat 23 and the bottom surface of the valve body 22 not covered by the valve seat 23, and the valve cover 24 and the valve seat 23 together form the accommodating chamber 20, wherein the valve seat 23 mainly forms the side wall of the accommodating chamber 20, and the valve cover 24 and the top wall mainly form the side wall of the accommodating chamber 20. The valve core 21 is a metal gravity hammer, and is fixed on the valve cover 24 in the center of the top of the accommodating cavity 20 in an insert molding manner, and the valve cover 24 is further provided with a plurality of exhaust holes 206 communicated with the accommodating cavity 20. The pressure limiting valve 2 has simple structure and convenient manufacture.

Referring to fig. 3 and 5, the pot cover includes a surface cover 3, the surface cover 3 has a recess 31, and the steam valve 4 covers the recess 31. The steam valve 4 forms a containing space 40 for containing the pressure limiting valve 2, a plurality of air outlet holes 41 are arranged at the top of the containing space 40, the pressure limiting valve 2 is arranged in the concave part 31, and the air flowing out of the air outlet holes 206 of the pressure limiting valve 2 is discharged out of the cooking utensil through the air outlet holes 41. The bottom wall of the depressed part 31 is provided with a mounting hole 310, the pot cover is further provided with a sealing gasket 32 mounted in the mounting hole 310, and the exhaust pipe 1 upwardly penetrates through the sealing gasket 32 and extends into the accommodating cavity 20 of the pressure limiting valve 2. The sealing gasket 32 is equivalent to the sealing connection mounting hole 310 and the exhaust pipe 1, and the sealing gasket 32 can prevent a small amount of airflow flowing out from the bottom side of the pressure limiting valve 2 from entering the inner part of the pot cover through the mounting hole 310.

With continued reference to fig. 5, and as shown in fig. 1 and 2, the pot lid further includes a lining lid 5 and a stainless steel inner lid 6, wherein the surface lid 3 is located on the upper side of the lining lid 5, and the stainless steel inner lid 6 is located on the lower side of the lining lid 5. The lining cover 5 is provided with an exhaust rod 7, and the tail end 71 of the exhaust rod 7 penetrates through the sealing gasket 32 upwards and is movably arranged at the bottom side of the pressure limiting valve 2. When the pressure in the cooking cavity reaches a safe value, the exhaust rod 7 is controlled to move as a lever, the tail end of the exhaust rod jacks up one end of the pressure limiting valve 2, the valve core 21 of the pressure limiting valve 2 leaves the exhaust port 11, and then the exhaust pipe 1 is opened to exhaust air outwards, so that the automatic exhaust function is realized.

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 and the appended claims, 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 product presentation position and should not be construed as limiting the claims. 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 the present invention, unless otherwise expressly stated or limited, 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 an intermediate. 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 use of "first," "second," and similar terms in the description and claims 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, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An exhaust assembly for a cooking appliance, comprising:

the exhaust pipe (1), the top end of the exhaust pipe (1) is provided with an exhaust port (11);

and a pressure limiting valve (2); the pressure limiting valve (2) comprises an accommodating cavity (20) and a valve core (21) positioned in the accommodating cavity (20), the top of the exhaust pipe (1) extends into the accommodating cavity (20), and the valve core (21) can block or open the exhaust port (11); the containing cavity (20) comprises a buffer cavity (202) and a guide surface (201) located on the bottom side of the buffer cavity (202), the highest point of the guide surface (201) is higher than the top surface of the exhaust pipe (1), the guide surface (201) guides airflow flowing out of the exhaust port (11) to enter the buffer cavity (202), and the pressure limiting valve (2) is further provided with an exhaust hole (206) communicated with the containing cavity (20).

2. The exhaust assembly of a cooking appliance of claim 1, wherein: the lowest point of the guide surface (201) is lower than the top surface of the exhaust pipe (1).

3. The exhaust assembly of a cooking appliance of claim 1, wherein: the guide surface (201) is an inclined surface, and the inclination angle of the guide surface (201) is 15-65 degrees.

4. The exhaust assembly of a cooking appliance of claim 3, wherein: the inclination angle of the guide surface (201) is 45 degrees.

5. The exhaust assembly of a cooking appliance of claim 3, wherein: the height of the guide surface (201) is 1mm to 10 mm.

6. The exhaust assembly of a cooking appliance of claim 1, wherein: the receiving chamber (20) further comprises a bottom chamber (203) located at the lower side of the buffer chamber (202), wherein the buffer chamber (202) has a larger space than the bottom chamber (203), the buffer chamber (202) is provided with a bottom wall (204), and the guiding surface (201) is located between the buffer chamber (202) and the bottom chamber (203) and connects the bottom wall (204) upwards.

7. The exhaust assembly of a cooking appliance of claim 1, wherein: the pressure limiting valve (2) is provided with a top wall (205) located above the accommodating cavity (20), the exhaust hole (206) is formed in the top wall (205), the horizontal projection of the exhaust hole (206) and the guide surface (201) is at least partially overlapped, and the horizontal projection of the exhaust hole (206) is located in the horizontal projection of the buffer cavity (202).

8. The exhaust assembly of a cooking appliance of claim 1, wherein: the pressure limiting valve (2) comprises a valve body (22), a valve seat (23) and a valve cover (24), the valve body (22) is annular, the valve seat (23) covers the top surface, the inner surface, the outer surface and part of the bottom surface of the valve body (22), the valve cover (24) covers the top surface, the outer side surface and the bottom surface of the valve seat (23), the valve cover (24) and the valve seat (23) jointly form the accommodating cavity (20), the valve core (21) is fixed on the valve cover (24) in an insert molding mode and located in the center of the top of the accommodating cavity (20), and the valve cover (24) is further provided with a plurality of exhaust holes (206) communicated with the accommodating cavity (20).

9. A cooking utensil comprises a pot body and a pot cover, wherein the pot body is provided with an inner pot, and the pot cover is covered on the pot body and forms a cooking cavity together with the inner pot; the method is characterized in that: the lid is provided with the exhaust assembly of the cooking appliance according to any one of claims 1 to 8.

10. The cooking appliance of claim 9, wherein: the cooker cover comprises a face cover (3) and a steam valve (4), the face cover (3) is provided with a concave part (31), the steam valve (4) covers the concave part (31) and forms an accommodating space (40) for accommodating the exhaust assembly, and the top of the accommodating space (40) is provided with a plurality of air outlet holes (41); the pressure limiting valve (2) is installed in the concave part (31), the bottom wall of the concave part (31) is provided with an installation hole (310), the cooker cover is also provided with a sealing gasket (32) installed in the installation hole (310), and the exhaust pipe (1) upwards penetrates through the sealing gasket (32) and extends into the accommodating cavity (20) of the pressure limiting valve (2); the pot cover further comprises a lining cover (5) and a stainless steel inner cover (6), the face cover (3) is located on the upper side of the lining cover (5), the stainless steel inner cover (6) is located on the lower side of the lining cover (5), an exhaust rod (7) is arranged on the lining cover (6), and the tail end (71) of the exhaust rod (7) upwards penetrates through the sealing gasket (32) and is movably arranged on the bottom side of the pressure limiting valve (2).