Exhaust valve and pressure cooker

Abstract

The utility model discloses an exhaust valve and a pressure cooker, and relates to the technical field of cooking utensils, the exhaust valve and the pressure cooker comprise a valve seat and a valve body, the valve seat comprises a valve cavity used for containing the valve body and an exhaust hole communicated with the valve cavity, the valve body is switched between a first position where the exhaust hole is closed and a second position where the exhaust hole is opened along with pressure changes, a valve element opposite to the exhaust hole in position is arranged on the side, facing the exhaust hole, of the valve body, and under the condition that the valve body is located at the first position, the exhaust hole is opened through the valve element. When the valve body is located at the first position, at least part of the valve element extends into the exhaust hole, and when the valve body is located at the second position, the valve element is separated from the exhaust hole; the valve body further comprises a flange part extending towards the exhaust hole, the flange part is arranged around the valve element, and the exhaust hole is located in the orthographic projection range of the flange part on the valve seat. The exhaust valve has the advantages that the valve core is not easy to incline and the exhaust is stable.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking utensils, and particularly relates to an exhaust valve and a pressure cooker. Background Art

[0002] When the air pressure increases, the boiling point of water will also increase accordingly. The pressure cooker utilizes this principle to gradually increase the air pressure inside the pot by sealing the pot body. Due to the increase in air pressure, the boiling point of water also rises, thereby cooking food at a higher temperature and accelerating the cooking process.

[0003] When the air pressure inside the pressure cooker rises to a certain limit, if heating continues without exhausting air, it may cause the internal pressure of the pot body to be too high, leading to potential safety hazards. Therefore, pressure cookers are usually equipped with exhaust valves. When the air pressure inside the pot reaches a certain level, the exhaust valve will automatically open for continuous exhaust.

[0004] In the related art, when the exhaust valve exhausts air, the pressure received by the valve core is unstable, and it is prone to tilt, affecting the exhaust effect. Summary of the Utility Model

[0005] The utility model aims to solve one of the technical problems in the related art to a certain extent. For this purpose, the utility model provides an exhaust valve and a pressure cooker, which have the advantages that the valve core is not prone to tilt and the exhaust is stable.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme:

[0007] An exhaust valve, comprising a valve seat and a valve body. The valve seat includes a valve cavity for accommodating the valve body and an exhaust hole communicated with the valve cavity. The valve body switches between a first position closing the exhaust hole and a second position opening the exhaust hole according to the pressure change. On one side of the valve body facing the exhaust hole, a valve core opposite to the position of the exhaust hole is provided. When the valve body is in the first position, at least part of the valve core extends into the exhaust hole. When the valve body is in the second position, the valve core is separated from the exhaust hole. The valve body further includes a flange portion extending towards the exhaust hole, the flange portion surrounds the valve core, and the exhaust hole is within the orthographic projection range of the flange portion on the valve seat.

[0008] In this embodiment, a flange portion is provided on the valve body, extending towards the exhaust hole and surrounding the valve core. When the valve body is disposed in the valve cavity and the positions of the valve core and the exhaust hole are opposite to each other, the flange portion surrounding the valve core is also opposite to the exhaust hole. Since the exhaust hole is within the orthographic projection range of the flange portion on the valve seat, most of the gas discharged from the exhaust hole will first impact into the flange portion. The flange portion can guide the gas to flow along the annular structure first, thereby preventing the gas from directly jetting onto other parts of the valve body, causing the gas to concentrate on impacting the flange portion and the valve core area, avoiding the tilting of the valve core caused by the gas simultaneously impacting multiple areas of the valve body, and improving the exhaust stability of the exhaust valve.

[0009] Optionally, a plurality of bumps are formed at the upper part of the valve cavity, arranged at intervals in the circumferential direction of the side wall of the valve cavity.

[0010] Optionally, the valve seat is a silica gel seat, and a metal exhaust pipe is arranged in the exhaust hole, and the outer surface of the metal exhaust pipe is in close contact with the inner wall surface of the exhaust hole.

[0011] Optionally, one end of the valve core close to the exhaust hole is configured as a conical tip, a positioning step protruding towards the axis of the metal exhaust pipe is formed in the metal exhaust pipe, and the outer surface of the conical tip forms a point contact with the positioning step.

[0012] Optionally, the valve body includes a valve housing, one end of the valve housing facing the exhaust hole is configured as a plane, the flange portion and the valve core are both formed on the plane, and the valve core is coaxially arranged with the valve housing.

[0013] Optionally, a receiving cavity is formed in the valve housing, and a weight block is arranged in the receiving cavity.

[0014] Optionally, an opening is formed at one end of the valve housing away from the valve core, and the valve body further includes a valve cover covering the opening.

[0015] Optionally, the outer peripheral edge of the valve cover protrudes from the outer peripheral edge of the valve housing for easy gripping.

[0016] Optionally, an annular groove is formed on the outer surface of the valve seat.

[0017] In addition, the present invention also provides a pressure cooker, including a pot lid and a pot body, and the pot lid is provided with the exhaust valve described in any one of the foregoing items. The beneficial effects of the pressure cooker provided by the present invention are similar to the reasoning process of the foregoing exhaust valve, and will not be elaborated here.

[0018] These features and advantages of the present utility model will be disclosed in detail in the following specific embodiments and the accompanying drawings. The best embodiments or means of the present utility model will be shown in detail in combination with the accompanying drawings, but it is not a limitation to the technical solution of the present utility model. In addition, these features, elements, and components that appear in each of the following texts and drawings are multiple, and different symbols or numbers are marked for convenience of representation, but they all represent components with the same or similar structures or functions. Description of the Drawings

[0019] The present utility model will be further described below in conjunction with the accompanying drawings:

[0020] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0021] Figure 2 is Figure 1 an exploded schematic diagram of;

[0022] Figure 3 is a schematic structural diagram of a valve housing in an embodiment of the present utility model;

[0023] Figure 4 is a schematic structural diagram of a valve body in an embodiment of the present utility model.

[0024] Among them, 1, valve seat; 11, valve cavity; 111, convex block; 12, exhaust hole; 13, metal exhaust pipe; 131, positioning step; 14, annular groove; 2, valve body; 21, valve core; 22, flange part; 23, valve housing; 231, accommodation cavity; 232, counterweight; 233, opening; 24, valve cover. Specific Embodiments

[0025] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. Based on the embodiments in the embodiments, it is intended to explain the present utility model and cannot be understood as a limitation to the present utility model.

[0026] The phrase "in one embodiment" as used in this specification does not necessarily refer to the same embodiment when it appears in various positions in the specification.

[0027] Embodiment:

[0028] Such as Figure 1 and Figure 2As shown in the figure, this embodiment provides an exhaust valve, which includes a valve seat 1 and a valve body 2. The valve seat 1 includes a valve cavity 11 for accommodating the valve body 2 and an exhaust hole 12 communicating with the valve cavity 11. The valve body 2 switches between a first position for closing the exhaust hole 12 and a second position for opening the exhaust hole 12 according to the pressure change. On one side of the valve body 2 facing the exhaust hole 12, a valve core 21 opposite to the position of the exhaust hole 12 is provided. When the valve body 2 is in the first position, at least part of the valve core 21 extends into the exhaust hole 12. When the valve body 2 is in the second position, the valve core 21 is separated from the exhaust hole 12. The valve body 2 further includes a flange portion 22 extending towards the exhaust hole 12. The flange portion 22 surrounds the valve core 21, and the exhaust hole 12 is within the orthographic projection range of the flange portion 22 on the valve seat 1.

[0029] When the air pressure inside the pressure cooker rises to a certain limit, if heating continues without exhausting, it may cause the internal pressure of the pot body to be too high, leading to potential safety hazards. Or after cooking, the pressure inside the pot needs to be released first before the lid can be opened. Otherwise, the high-pressure gas may be instantly released, forming a strong impact force, causing the lid to pop out or injure people. Therefore, a pressure cooker is provided with an exhaust valve for exhausting and relieving pressure. In this embodiment, an exhaust valve applicable to a pressure cooker is provided for exhausting the air inside the pot body of the pressure cooker. The exhaust valve includes a valve seat 1 and a valve body 2 disposed inside the valve seat 1. The valve seat 1 is internally provided with a valve cavity 11 for accommodating the valve body 2, and the valve cavity 11 provides necessary space for the movement of the valve body 2. The valve seat 1 is also provided with an exhaust hole 12 communicating the valve cavity 11 and the inside of the pot body, so that the gas inside the pot can enter the valve cavity 11. On one side of the valve body 2 facing the exhaust hole 12, a valve core 21 for cooperating with the exhaust hole 12 is provided. The valve core 21 has a first position capable of closing the exhaust hole 12 and a second position capable of opening the exhaust hole 12. The valve core 21 can change between the first position and the second position according to the pressure change inside the pot to close or open the exhaust hole 12. When the valve body 2 is in the first position, at least the end of the valve core 21 extends into the exhaust hole 12 to close the exhaust hole 12. When the valve body 2 is in the second position, the valve core 21 is separated from the exhaust hole 12 to open the exhaust hole 12. As Figure 2 and Figure 4As shown, a flange portion 22 extending towards the exhaust hole 12 is further provided on the valve body 2, and the flange portion 22 surrounds the valve core 21. When the valve body 2 is disposed in the valve cavity 11 and the positions of the valve core 21 and the exhaust hole 12 are opposite, the flange portion 22 surrounding the valve core 21 is also opposite to the exhaust hole 12. The exhaust hole 12 is within the orthographic projection range of the flange portion 22 on the valve seat 1. Most of the gas discharged from the exhaust hole 12 will first impact into the flange portion 22. The flange portion 22 can guide the gas to flow along the annular structure first, thus preventing the gas from directly jetting onto other parts of the valve body 2, making the gas concentrate on impacting the flange portion 22 and the valve core 21 area, and avoiding the inclination of the valve core 21 caused by the gas simultaneously impacting multiple areas of the valve body 2. The inclination of the valve core 21 may lead to uneven fitting gaps between it and the valve seat 1, resulting in unstable exhaust and affecting the sealing effect.

[0030] The working principle of the exhaust valve in this embodiment is as follows: When the pressure in the pot body rises to a certain level, the valve body 2 will move to the second position under the action of the pressure. At this time, the valve core 21 follows the valve body 2 to move and disengages from the exhaust hole 12, and the exhaust hole 12 opens, allowing the gas in the pot body to be discharged. As the gas is discharged and the pressure in the pot body decreases, the valve body 2 gradually returns to the first position under the action of gravity, and the valve core 21 re-enters the exhaust hole 12 and closes the exhaust hole 12. Therefore, the exhaust valve can automatically complete the exhaust and closing processes without manual intervention.

[0031] The valve body 2 includes a valve housing 23. One end of the valve housing 23 facing the exhaust hole 12 is configured as a plane, and the flange portion 22 and the valve core 21 are both formed on the plane, and the valve core 21 is coaxially arranged with the valve housing 23.

[0032] In this embodiment, both the flange portion 22 and the valve core 21 are integrally formed with the valve housing 23, and both the flange portion 22 and the valve core 21 are located on the bottom plane of the valve housing 23, and the valve core 21 and the valve housing 23 are coaxially arranged. In addition, the flange portion 22 is also coaxially arranged with the valve core 21 and the valve housing 23. That is, both the flange portion 22 and the valve core 21 are arranged in the central area of the bottom plane of the valve housing 23. When the gas impacts the flange portion 22 and the valve core 21, it is equivalent to impacting the central area of the bottom of the valve housing 23, which is more conducive to keeping the valve core 21 and the valve housing 23 stable and preventing the valve core 21 from tilting. In addition, the bottom wall of the valve housing 23 is configured as a plane, and the plane provides a stable and flat support base for the valve core 21 and the flange portion 22, further ensuring that the valve core 21 remains stable when being impacted by the gas and is not prone to tilting.

[0033] The valve seat 1 is a silica gel seat, and a metal exhaust pipe 13 is arranged in the exhaust hole 12, and the outer surface of the metal exhaust pipe 13 is in close contact with the inner wall surface of the exhaust hole 12.

[0034] In this embodiment, the valve seat 1 is a silica gel seat, and an exhaust hole 12 is formed at the bottom of the silica gel seat. Since the silica gel seat is prone to deformation, the exhaust hole 12 is also likely to deform, resulting in the valve core 21 being unable to enter the exhaust hole 12 or there being a gap in the fit between the valve core 21 and the exhaust hole 12, thus leading to a poor sealing effect or uneven exhaust. A metal exhaust pipe 13 is provided in the exhaust hole 12. The metal exhaust pipe 13 has a relatively high hardness and is not easily deformed. The exhaust pipe closely adheres to the inner wall surface of the exhaust hole 12, and can also keep the exhaust hole 12 in its original shape, making the exhaust more uniform and stable. In other embodiments, the exhaust pipe can also be made of materials such as quartz and ceramics, as long as the hardness of the manufactured exhaust pipe is greater than that of the silica gel seat and the exhaust pipe is not easily deformed.

[0035] One end of the valve core 21 close to the exhaust hole 12 is configured as a conical tip. A positioning step 131 protruding towards the axis of the metal exhaust pipe 13 is formed inside the metal exhaust pipe 13. The outer surface of the conical tip forms a point contact with the positioning step 131.

[0036] In this embodiment, a positioning step 131 protruding towards its axis is formed inside the metal exhaust pipe 13. When the valve core 21 enters the metal exhaust pipe 13, the conical tip forms a point contact with the positioning step 131, ensuring the accurate alignment of the valve core 21. The point contact can also reduce the frictional force generated due to too large a contact area.

[0037] A receiving cavity 231 is formed inside the valve housing 23, and a counterweight 232 is arranged inside the receiving cavity 231.

[0038] In this embodiment, a receiving cavity 231 is formed inside the valve housing 23, and a counterweight 232 is arranged inside the receiving cavity 231. The counterweight 232 can keep the valve core 21 in the first position under the action of gravity, maintaining the close contact between the valve core 21 and the exhaust hole 12. In addition, by adjusting the weight of the counterweight 232, the opening pressure of the exhaust valve can also be adjusted, improving the flexibility of the exhaust valve.

[0039] As Figure 3 shown, an opening 233 is formed at one end of the valve housing 23 away from the valve core 21. The valve body 2 further includes a valve cover 24 covering the opening 233.

[0040] In this embodiment, the opening 233 facilitates the taking and placing of the counterweight 232 inside the receiving cavity 231, providing a channel for installation and maintenance. The valve cover 24 can be used to close the opening 233 on the valve housing 23, preventing external impurities, moisture or gas from entering the interior of the valve body 2, and extending the service life of the exhaust valve.

[0041] The outer peripheral edge of the valve cover 24 protrudes beyond the outer peripheral edge of the valve housing 23 for easy gripping.

[0042] In this embodiment, the protruding outer peripheral edge provides a larger gripping area for the operator, facilitating the rotation or removal of the valve cover 24, and can reduce accidental slipping or damage caused by unstable gripping.

[0043] A plurality of bumps 111 are formed on the upper part of the valve cavity 11 and are arranged at intervals in the circumferential direction of the side wall of the valve cavity 11. When the valve body 2 is inclined relative to the valve cavity 11, the valve body 2 abuts against at least one bump 111.

[0044] In this embodiment, a plurality of bumps 111 are formed on the upper part of the valve cavity 11 and are arranged at intervals in the circumferential direction of the side wall of the valve cavity 11. When the valve body 2 is inclined relative to the valve cavity 11, the valve body 2 can at least abut against one bump 111 to limit the further inclination of the valve body 2, ensuring the stability and normal operation of the exhaust valve. There is a gap between the valve body 2 and the valve cavity 11. When no bump 111 is provided in the valve cavity 11, when the valve body 2 and the valve core 21 are inclined, the valve body 2 will abut against the inner wall of the valve cavity 11, and at this time, the inclination degree is relatively large, affecting the exhaust effect; after the bump 111 is provided in the valve cavity 11, when the valve body 2 is inclined, it abuts against the bump 111 and does not continue to incline under the block of the bump 111. At this time, the inclination degree is relatively small, ensuring the stability of exhaust.

[0045] An annular groove 14 is formed on the outer surface of the valve seat 1.

[0046] In this embodiment, an annular groove 14 is formed on the outer surface of the valve seat 1 to facilitate clamping the exhaust valve on the pressure cooker. The annular groove 14 provides a stable clamping point for the exhaust valve. When the exhaust valve is installed on the pressure cooker, a part of the pressure cooker (such as a boss, etc.) can be embedded into the annular groove 14 of the valve seat 1, thereby achieving a tight and stable connection and preventing the exhaust valve from loosening or falling off due to vibration or pressure change during the operation of the pressure cooker.

[0047] This embodiment further provides a pressure cooker, including a pot lid and a pot body, and the aforementioned exhaust valve is provided on the pot lid.

[0048] In this embodiment, a pressure cooker is further provided, including a pot body and a pot lid covering the pot body, and the aforementioned exhaust valve is provided on the pot lid. After the food is cooked, the inner cavity of the pot body usually has a relatively high temperature and pressure. Before opening the pot lid, it is necessary to release the pressure in the pot through the exhaust valve. In addition, when the air pressure inside the pressure cooker rises to a certain limit, if heating continues without exhausting, it may cause the internal pressure of the pot body to be too high, leading to potential safety hazards.

[0049] The above are only the specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that the present utility model includes but is not limited to the content described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present utility model will be included within the scope of the claims.

Claims

1. An exhaust valve, comprising a valve seat (1) and a valve body (2), wherein the valve seat (1) comprises a valve cavity (11) for accommodating the valve body (2) and an exhaust hole (12) communicating with the valve cavity (11), wherein the valve body (2) switches between a first position for closing the exhaust hole (12) and a second position for opening the exhaust hole (12) in response to pressure changes, and wherein: A valve core (21) is provided on one side of the valve body (2) facing the exhaust hole (12), and is located opposite to the exhaust hole (12); when the valve body (2) is located at the first position, the valve core (21) at least partially extends into the exhaust hole (12); when the valve body (2) is located at the second position, the valve core (21) is separated from the exhaust hole (12); the valve body (2) also includes a flange portion (22) extending toward the exhaust hole (12); the flange portion (22) is arranged around the valve core (21), and the exhaust hole (12) is located within the range of the positive projection of the flange portion (22) on the valve seat (1).

2. The exhaust valve according to claim 1, characterized in that: The upper part of the valve cavity (11) is formed with a plurality of protrusions (111) which are arranged at intervals in the circumferential direction along the side wall of the valve cavity (11).

3. The exhaust valve according to claim 1 or 2, characterized in that: The valve seat (1) is a silicone seat, a metal exhaust pipe (13) is arranged in the exhaust hole (12), and the outer surface of the metal exhaust pipe (13) is in close contact with the inner wall surface of the exhaust hole (12).

4. The exhaust valve according to claim 3, characterized in that: One end of the valve core (21) close to the exhaust hole (12) is configured as a conical tip, a positioning step (131) protruding toward the axis of the metal exhaust pipe (13) is formed in the metal exhaust pipe (13), and the outer surface of the conical tip forms point contact with the positioning step (131).

5. The exhaust valve according to claim 1 or 2, characterized in that: The valve body (2) comprises a valve housing (23), one end of the valve housing (23) facing the exhaust hole (12) is configured as a plane, the flange portion (22) and the valve core (21) are both formed on the plane, and the valve core (21) is coaxially arranged with the valve housing (23).

6. The exhaust valve according to claim 5, characterized in that An accommodating chamber (231) is formed in the valve housing (23), and a counterweight (232) is arranged in the accommodating chamber (231).

7. The exhaust valve according to claim 5, characterized in that: An opening (233) is formed at one end of the valve housing (23) away from the valve core (21), and the valve body (2) further comprises a valve cover (24) covering the opening (233).

8. The exhaust valve according to claim 7, characterized in that: The outer peripheral edge of the valve cover (24) protrudes from the valve housing (23).

9. The exhaust valve according to claim 1 or 2, characterized in that: An annular groove (14) is formed on the outer surface of the valve seat (1).

10. A pressure cooker, comprising a cover and a body, characterized in that: The pot cover is provided with an exhaust valve as described in any one of claims 1 to 9.

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