Cooking appliances and exhaust components thereof

Abstract

The present application provides a cooking utensil and an exhaust assembly thereof, the cooking utensil comprising a pot body and a pot cover, the pot body being provided with an inner pot; the pot cover being provided on the pot body, and forming a cooking cavity together with the inner pot, and the pot cover being provided with an exhaust assembly. The exhaust assembly comprises an exhaust pipe and a pressure limiting valve. The exhaust pipe has an exhaust port at the top end, the pressure limiting valve comprises a receiving cavity and a valve core located in the receiving cavity, the top of the exhaust pipe extends into the receiving cavity, and the valve core can block or open the exhaust port. The receiving cavity comprises a buffer cavity and a guide surface located 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 also provided with an exhaust hole connected to the receiving cavity. The cooking utensil of the present application utilizes the buffer cavity to provide a buffering effect for the airflow, so as to prevent the airflow from flowing back into the pot cover, causing the pot cover to produce condensed water and other problems.

Description

Technical Field

[0001] The present application relates to a cooking appliance having an exhaust assembly. Background Art

[0002] An exhaust assembly is usually provided on the lid of an electric pressure cooker, which can automatically exhaust the gas when the gas pressure in the cooking chamber of the electric pressure cooker exceeds the safe range. A more common type is a gravity-type pressure-limiting valve, which realizes the pressure-limiting function by pressing the exhaust pipe with its own weight. The exhaust assembly includes an exhaust rod and a pressure-limiting valve, and the exhaust rod extends into the exhaust assembly. The valve core of the pressure-limiting valve is generally a spherical weight, which blocks the exhaust port of the exhaust pipe. The pressure-limiting valve is lifted by the exhaust rod, so that the spherical weight leaves the exhaust port, and the exhaust pipe exhausts the gas to the outside, realizing the automatic exhaust function of the pressure cooker. However, the internal space of the existing pressure-limiting valve generally adopts a straight wall structure, resulting in a small exhaust space, and the exhaust angle of the straight wall and the exhaust pipe is inconsistent, resulting in irregular gas flow 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, resulting in condensation water inside the steam cover or the upper cover, and the problem of too high temperature of the upper cover.

[0003] Therefore, it is necessary to improve the existing cooking utensils. Summary of the invention

[0004] The present application provides a cooking appliance, the exhaust assembly of which has good exhaust performance.

[0005] Specifically, the present application is implemented through the following technical solutions: an exhaust assembly of a cooking utensil, including an exhaust pipe and a pressure-limiting valve. An exhaust port is provided at the top of the exhaust pipe, the pressure-limiting valve includes a accommodating chamber and a valve core located in the accommodating chamber, the top of the exhaust pipe extends into the accommodating chamber, and the valve core can block or open the exhaust port. The accommodating chamber includes a buffer chamber and a guide surface located at the bottom side of the buffer chamber, 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 punching chamber, and the pressure-limiting valve is also provided with an exhaust hole connected to the accommodating chamber. The cooking utensil of the present application utilizes the buffer chamber to provide a buffering effect for the airflow, thereby preventing the airflow from flowing back into the inside of the pot cover, causing condensation water to form on the pot cover, and other problems.

[0006] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a cross-sectional view of a pot cover of a cooking utensil according to an embodiment of the present application.

[0008] Figure 2 for Figure 1 A zoomed-in view of the area in the middle circle, where the exhaust assembly is in its initial position.

[0009] Figure 3 and Figure 2 Similarly, wherein the exhaust assembly is in an open position.

[0010] Figure 4 This is a three-dimensional exploded view of the pressure limiting valve of the exhaust component.

[0011] Figure 5 This is a partial exploded view of the pot lid.

[0012] Description of reference numerals:

[0013] Exhaust pipe 1, exhaust port 11, inclined surface 111, air inlet 12, pressure limiting valve 2, accommodating chamber 20, guide surface 201, buffer chamber 202, bottom chamber 203, bottom end wall 204, top wall 205, exhaust hole 206, valve core 21, valve body 22, valve seat 23, valve cover 24, face cover 3, recessed portion 31, mounting hole 310, sealing gasket 32, steam valve 4, air outlet 41, lining cover 5, stainless steel inner cover 6, exhaust rod 7, and end 71. DETAILED DESCRIPTION

[0014] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices, systems, apparatuses, and methods consistent with some aspects of the present application as detailed in the appended claims.

[0015] Combination Figure 1 As shown, the present application provides a cooking utensil, including a pot body and a pot cover, 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 together form a cooking cavity. The main improved structure of the present application is on the pot cover, and the pot body can be a conventional structure, so the structure of the pot body and the inner pot is omitted in the attached drawings.

[0016] Combination Figure 2 and Figure 3 As shown, in this embodiment, the cooking appliance is an electric pressure cooker, and an exhaust assembly is provided on the cooker cover. The exhaust assembly includes an exhaust pipe 1 and a pressure limiting valve 2.

[0017] The exhaust pipe 1 has an exhaust port 11 at the top and an air inlet 12 at the bottom. The air inlet 12 is connected to the cooking cavity and can discharge the gas in the cooking cavity. The pressure limiting valve 2 includes a receiving cavity 20 and a valve core 21 located in the receiving cavity 20. The top of the exhaust pipe 1 extends into the receiving cavity 20. The valve core 21 can block or open the exhaust port 11. Figure 2As shown, during the pressure-up process of the cooking appliance, in order to keep the cooking cavity sealed and continuously pressurized, the valve core 21 blocks the exhaust port 11 of the exhaust pipe 1 to prevent the exhaust pipe 1 from exhausting to the outside. When the pressure in the cooking cavity has reached a set value or a safety value, one end of the pressure-limiting valve 2 is lifted, and the valve core 21 moves accordingly to open the exhaust port 11, and the cooking cavity is exhausted to the outside through the exhaust pipe 1 to release the pressure.

[0018] In the prior art, the side walls of the accommodating cavity 20 of the pressure-limiting valve 2 are all straight walls, and the airflow is easily blocked and easily rushes into the inside of the pot cover. In order to avoid this problem, the accommodating cavity 20 of the pressure-limiting valve 2 of the cooking utensil of the present application includes a buffer cavity 202 and a guide surface 201 located at 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. This guide surface 201 can guide the airflow flowing out of the exhaust port 11 upward into the buffer cavity 202. The pressure-limiting valve 2 is also provided with an exhaust hole 206 connected to the accommodating cavity 20. The airflow flowing into the buffer cavity 202 is discharged outward from the exhaust hole 206. The cooking utensil of the present application uses the buffer cavity to provide a buffering effect for the airflow, so as to prevent the airflow from flowing back into the pot cover, causing the pot cover to be overheated, generating condensed water and other problems.

[0019] The lowest point of the guide surface 201 is lower than the top surface of the exhaust pipe 1. Therefore, the airflow flowing out of the exhaust port 11 of the exhaust pipe 1 generally rushes upward due to the high pressure in the cooking chamber. Even if there is airflow rushing out sideways, the guide surface 201 is at a lower position, which can still provide a guiding effect to prevent the airflow from flowing downward. It can be understood that the highest point of the guide surface 201 needs to be higher than the top surface of the exhaust pipe 1, otherwise it will not provide an effective guiding effect.

[0020] In this embodiment, the guide surface 201 is an inclined surface, and the guide surface 201 has only one inclination angle. As a simple replacement, the guide surface 201 can also be set with multiple inclination angles, that is, the guide surface 201 includes multiple sections of inclined surfaces, which can also achieve the guiding function; in addition, the guide surface 201 can also be stepped, which can also achieve guidance.

[0021] As an embodiment, the inclination angle of the guide surface 201 is set to 15 degrees to 65 degrees. 15 degrees to 65 degrees is a relatively reasonable angle. If the angle is too large, it will be close to a straight wall, which will cause the airflow to flow downward after being blocked. If the angle is too small, it cannot be effectively guided upward and discharged to the outside. Among them, the inclination angle of 45 degrees is the preferred angle of the guide surface 201, and the length of the guide surface 201 is 3mm. The height of the guide surface 201 is 1mm to 10mm, which can effectively guide the airflow.

[0022] As an 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 can also guide the airflow upward to discharge the cooking utensil.

[0023] Continue to refer Figure 2 and Figure 3 As shown, the accommodating chamber 20 also includes a bottom chamber 203 located below the buffer chamber 202. The diameter of the bottom chamber 203 is close to the diameter of the exhaust pipe 1, which limits the downward flow of the airflow. The buffer chamber 202 is extended relative to the bottom chamber 203. The space of the buffer chamber 202 is larger than the space of the bottom chamber 203 to accommodate the airflow and provide a buffering effect to prevent the airflow from rushing out and scalding the user. The bottom of the buffer chamber 202 is provided with a bottom end wall 204. The guide surface 201 is located between the buffer chamber 202 and the bottom chamber 203, and is connected to the bottom end wall 204 upwards and to the side wall of the bottom chamber 203 downwards.

[0024] The pressure limiting valve 2 is further provided with a top wall 205, and an exhaust hole 206 is formed on 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 an annular manner, and 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 located within the horizontal projection of the buffer cavity 202. Most of the airflow guided by the guide surface 201 can be directly discharged from the cooking utensil through the exhaust holes 206, which can more effectively discharge the airflow. The airflow flowing into the buffer cavity 202 can be discharged outward from the exhaust holes 206.

[0025] Please refer to Figure 4 As shown, the pressure limiting valve 2 includes a valve body 22, a valve seat 23 and a valve cover 24, wherein the valve body 22 is located at the innermost part, 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 this embodiment, the valve body 22 is annular, the valve seat 23 covers the top surface, inner surface, outer surface and part of the bottom surface of the valve body 22; the valve cover 24 covers the top surface, outer side surface and bottom surface of the valve seat 23, and the part of 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 aforementioned accommodating cavity 20, wherein the valve seat 23 mainly forms the side wall of the accommodating cavity 20, and the valve cover 24 mainly forms the top wall of the side wall of the accommodating cavity 20. The valve core 21 is a metal gravity hammer, which is fixed on the valve cover 24 at the center of the top of the accommodating cavity 20 by means of inlay molding, and the valve cover 24 is also provided with a plurality of exhaust holes 206 communicating with the accommodating cavity 20. The pressure limiting valve 2 has a simple structure and is easy to manufacture.

[0026] Please refer to Figure 3 and Figure 5As shown, the pot cover includes a cover 3, which is provided with a recessed portion 31, and a steam valve 4 covers the recessed portion 31. The steam valve 4 forms a receiving space 40 for receiving the pressure limiting valve 2, and a plurality of air outlets 41 are provided at the top of the receiving space 40. The pressure limiting valve 2 is installed in the recessed portion 31, and the gas flowing out of the air outlet 206 of the pressure limiting valve 2 is discharged from the cooking utensil through the air outlet 41. The bottom wall of the recessed portion 31 is provided with a mounting hole 310, and the pot cover is further provided with a sealing gasket 32 ​​installed in the mounting hole 310, and the exhaust pipe 1 extends upward through the sealing gasket 32 ​​into the receiving cavity 20 of the pressure limiting valve 2. The sealing gasket 32 ​​is equivalent to sealingly connecting the 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 inside of the pot cover through the mounting hole 310.

[0027] Continue to refer Figure 5 , and combined with Figure 1 and Figure 2 As shown, the pot cover also includes a lining cover 5 and a stainless steel inner cover 6, the surface cover 3 is located on the upper side of the lining cover 5, and the stainless steel inner cover 6 is located on the lower side of the lining cover 5. An exhaust rod 7 is provided on the lining cover 5, and the end 71 of the exhaust rod 7 is upwardly passed through the sealing gasket 32 ​​and movably arranged on 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, and its end pushes up one end of the pressure limiting valve 2, so that the valve core 21 of the pressure limiting valve 2 leaves the exhaust port 11, so that the exhaust pipe 1 is opened, and the exhaust can be discharged to the outside, realizing the automatic exhaust function.

[0028] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The singular forms of "a", "a", "an" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used in this article refers to and includes any or all possible combinations of one or more associated listed items.

[0029] The terms used in this article, such as "upper", "lower", "left", "right", "front", "back", "thickness", "radial", "axial", etc., which indicate relative positions in space, are used for the purpose of convenience to describe the relationship of one feature relative to another feature as shown in the drawings, and are not limited to one position or one spatial orientation. It is understood that, depending on the different positions of the products, the terms of relative positions in space may be intended to include different orientations in addition to the orientation shown in the drawings, and should not be construed as limitations on the claims. In addition, the descriptor "horizontal" used in this article is not completely equivalent to being perpendicular to the direction of gravity, and a certain angle of inclination is allowed.

[0030] “Including” or “comprising” and similar words mean that the elements or objects appearing before “including” or “comprising” include the elements or objects listed after “including” or “comprising” and their equivalents, and do not exclude other elements or objects.

[0031] It should be noted that when an element is referred to as being "fixed on..." another element, it can be directly on the surface of the other element or at a distance from the surface of the other element. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined.

[0032] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] It should be understood that the words "first", "second" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Multiple" or "multi-layer" etc. indicate two or more quantities.

[0034] The cooking utensils of the present application are merely preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. An exhaust assembly for a cooking appliance, characterized in that: include: An exhaust pipe (1), wherein 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 a receiving chamber (20) and a valve core (21) located in the receiving chamber (20); the top of the exhaust pipe (1) extends into the receiving chamber (20); the valve core (21) can block or open the exhaust port (11); the receiving chamber (20) comprises a buffer chamber (202) and a bottom chamber (203) located below the buffer chamber (202); the buffer chamber (202) is extended relative to the bottom chamber (203); the space of the buffer chamber (202) is larger than the space of the bottom chamber (203); the buffer chamber (202) is provided with a bottom end wall (204); the receiving chamber (20) further comprises a bottom end wall (204) located in the buffer chamber (202); a guide surface (201) between the pressure limiting valve (2) and the bottom cavity (203), the guide surface (201) being an inclined surface, the guide surface (201) being connected to the bottom end wall (204) upwards and to the side wall of the bottom cavity (203) downwards, the lowest point of the guide surface (201) being lower than the top surface of the exhaust pipe (1), the highest point of the guide surface (201) being higher than the top surface of the exhaust pipe (1), the guide surface (201) guiding the airflow flowing out of the exhaust port (11) into the buffer cavity (202); the pressure limiting valve (2) is further provided with a top wall (205) located above the accommodating cavity (20), the top wall (205) being further provided with an exhaust hole (206) communicating with the accommodating cavity (20).

2. The exhaust assembly of a cooking appliance according to claim 1, characterized in that: The inclination angle of the guide surface (201) is 15 degrees to 65 degrees.

3. The exhaust assembly of a cooking appliance according to claim 2, characterized in that: The inclination angle of the guide surface (201) is 45 degrees.

4. The exhaust assembly of a cooking appliance according to claim 2, characterized in that: The height of the guide surface (201) is 1 mm to 10 mm.

5. The exhaust assembly of a cooking appliance according to claim 1, characterized in that: The exhaust hole (206) at least partially overlaps with a horizontal projection of the guide surface (201), and the horizontal projection of the exhaust hole (206) is located within a horizontal projection of the buffer cavity (202).

6. The exhaust assembly of a cooking appliance according to claim 1, characterized in that: 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, inner surface, outer surface and part of the bottom surface of the valve body (22); the valve cover (24) covers the top surface, outer side surface and bottom surface of the valve seat (23); the valve cover (24) and the valve seat (23) together form the aforementioned accommodating cavity (20); the valve core (21) is fixed to the valve cover (24) by means of inlay molding and is located at the center of the top of the accommodating cavity (20); the valve cover (24) is also provided with a plurality of exhaust holes (206) connected to the accommodating cavity (20).

7. A cooking utensil, comprising a pot body and a pot cover, wherein the pot body is provided with an inner pot, and the pot cover is provided on the pot body to form a cooking cavity together with the inner pot; characterized in that: The pot cover is provided with an exhaust assembly of the cooking utensil according to any one of claims 1 to 6.

8. The cooking device according to claim 7, characterized in that: The pot cover comprises a surface cover (3) and a steam valve (4); the surface cover (3) is provided with a recessed portion (31); the steam valve (4) covers the recessed portion (31) and forms a receiving space (40) for receiving the exhaust assembly; a plurality of air outlet holes (41) are provided at the top of the receiving space (40); the pressure limiting valve (2) is installed in the recessed portion (31); a mounting hole (310) is provided on the bottom wall of the recessed portion (31); and the pot cover is further provided with a sealing gasket installed in the mounting hole (310). (32), the exhaust pipe (1) passes through the sealing gasket (32) upwards and extends into the accommodating cavity (20) of the pressure limiting valve (2); the pot cover also includes a lining cover (5) and a stainless steel inner cover (6), the surface 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), and the lining cover (5) is provided with an exhaust rod (7), the end (71) of the exhaust rod (7) passes through the sealing gasket (32) upwards and is movably arranged on the bottom side of the pressure limiting valve (2).

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