Pressure release valve and pressure cooker
By designing the exhaust channel and elastic element of the pressure relief valve, the problem of slow pressure gas discharge from the pressure cooker was solved, achieving rapid pressure relief and reducing pressure loss, thus improving the user experience.
Patent Information
- Application Number
- CN202423043230.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-09
AI Technical Summary
The small diameter of the exhaust pipe in existing pressure cookers results in slow discharge of high-pressure gas, affecting the user experience.
Design a pressure relief valve, including a valve seat, a float body, a guide post and an elastic element. An exhaust channel is formed by the first exhaust port, the valve cavity and the second exhaust port. The elastic element presses against the float body to achieve rapid pressure relief, and the second exhaust port is sealed without external force to prevent pressure loss.
It enables rapid pressure release in pressure cookers, reducing waiting time, improving user experience, and minimizing pressure loss during high-pressure cooking.
Smart Images
Figure CN223529297U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cookware technology, and in particular to a pressure relief valve and a pressure cooker. Background Technology
[0002] An electric pressure cooker consists of a pot body and a lid. The lid is placed on the pot body to seal the inner pot, allowing for pressure cooking of the food inside. After pressure cooking is complete, the lid must be opened only after the high-pressure gas has been released. However, in existing pressure cookers, all the high-pressure gas is expelled through a vent pipe. Most of these vent pipes have small orifices, only 2.8-3.2mm in diameter, resulting in slow gas release. Users have to spend a significant amount of time waiting for the pressure cooker to release pressure, negatively impacting the user experience. Utility Model Content
[0003] The purpose of this invention is to provide a pressure relief valve and a pressure cooker to solve the technical problem in the prior art where all the high-pressure gas inside the pressure cooker is discharged outside the cooker through the exhaust pipe, and most of the exhaust pipes have small diameters, resulting in a slow discharge speed of the high-pressure gas inside the cooker.
[0004] This utility model provides a pressure relief valve, including a valve seat, a float body, a guide post, and an elastic element. The valve seat has a valve cavity, a first vent hole for communicating with the inner cavity of the pot, and a second vent hole for communicating with the outside. The valve cavity connects the first vent hole and the second vent hole. The float body is disposed in the valve cavity. The guide post is disposed on the top wall of the float body, and the top end of the guide post extends out of the second vent hole. The float body abuts against the bottom wall of the second vent hole. One end of the elastic element is connected to the inner bottom wall of the valve cavity, and the other end is connected to the bottom wall of the float body.
[0005] As described above, the pressure relief valve includes a valve seat body and a valve core. The valve seat body and the valve core are sealed together to form the valve cavity. The float body abuts against the valve core. The first vent hole is disposed on the valve seat body, and the second vent hole is disposed on the valve core. The bottom end of the elastic element is connected to the valve seat body.
[0006] As described above, the pressure relief valve has an annular boss extending into the valve cavity on the bottom wall of the valve core. The annular boss surrounds the second vent hole, and the top wall of the float body abuts against the bottom wall of the annular boss.
[0007] As described above, the pressure relief valve includes a float body comprising a float connection portion and a stop portion, the stop portion being arranged around the float connection portion, the guide post being arranged on the top wall of the float connection portion, and the top end of the elastic element being connected to the bottom wall of the float connection portion.
[0008] As described above, the pressure relief valve includes a blocking part body and an annular surrounding plate located at the top of the blocking part body, and the annular surrounding plate is provided with at least one air passage notch.
[0009] As described above, the pressure relief valve has multiple venting notches, which are circumferentially spaced on the sidewall of the annular enclosure to form a serrated structure at the ends of the annular enclosure.
[0010] As described above, in the pressure relief valve, a clearance groove is formed between the outer wall of the annular boss and the side wall of the valve cavity, and the clearance groove is used to accommodate the annular surrounding plate.
[0011] As described above, the pressure relief valve includes a sealing gasket, a sealing mounting portion is formed between the annular surrounding plate and the guide post, the sealing gasket is sleeved on the guide post and located within the sealing mounting portion, and the sealing gasket is used to abut against the annular boss to seal the second exhaust port.
[0012] The pressure relief valve as described above further includes a float cap, which is connected to the top of the guide post and is located outside the valve seat.
[0013] This utility model also provides a pressure cooker, including the pressure relief valve as described above.
[0014] Implementing the embodiments of this utility model will have the following beneficial effects:
[0015] In this utility model, the pressure relief valve includes a valve seat, a float body, a guide post, and an elastic element. The valve seat has a valve cavity, a first vent hole for communicating with the inner cavity of the pot, and a second vent hole for communicating with the outside. The valve cavity is used to connect the first vent hole and the second vent hole. The float body is disposed in the valve cavity, the guide post is disposed on the top wall of the float body, the top end of the guide post extends out of the second vent hole, and the float body abuts against the bottom wall of the second vent hole. One end of the elastic element is connected to the inner bottom wall of the valve cavity, and the other end is connected to the bottom wall of the float body. The first vent, valve chamber, and second vent together form an exhaust channel, allowing high-pressure gas inside the pressure cooker to escape quickly and accelerate pressure release. An elastic element presses against the float body, ensuring it seals the second vent when no external force is applied, reducing pressure loss during pressure cooking and preventing interference with the pressure cooker's high-pressure cooking. When pressure release is needed, the user presses the guide post, which moves the float body downwards, disengaging it from the bottom wall of the second vent and opening the exhaust channel. At this point, the elastic element is deformed. Releasing the guide post causes the elastic element to move the float body upwards until it re-engages with the bottom wall of the second vent, closing the exhaust channel. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of a pressure relief valve according to an exemplary embodiment;
[0018] Figure 2 This is a cross-sectional view of a pressure relief valve according to an exemplary embodiment;
[0019] Figure 3 This is an exploded view of the structure of a pressure relief valve according to an exemplary embodiment.
[0020] The components are as follows: 1. Valve seat; 11. Valve cavity; 111. Reflux groove; 12. Valve seat body; 121. First vent hole; 13. Valve core; 131. Second vent hole; 132. Annular boss; 2. Elastic element; 3. Float body; 31. Float connection part; 32. Abutment part; 321. Abutment part body; 322. Annular surrounding plate; 323. Air passage notch; 33. Sealing installation part; 4. Guide post; 5. Sealing gasket; 6. Float cap; 7. First sealing ring; 8. Second sealing ring. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
[0026] See Figures 1-3This utility model provides a pressure relief valve, including a valve seat 1, a float body 3, a guide post 4, and an elastic element 2. The valve seat 1 has a valve cavity 11, and the valve seat 1 has a first vent hole 121 for communicating with the inner cavity of the pot and a second vent hole 131 for communicating with the outside. The valve cavity 11 is used to connect the first vent hole 121 and the second vent hole 131. The float body 3 is disposed in the valve cavity 11. The guide post 4 is disposed on the top wall of the float body 3, and the top end of the guide post 4 extends out of the second vent hole 131. The float body 3 abuts against the bottom wall of the second vent hole 131. One end of the elastic element 2 is connected to the inner bottom wall of the valve cavity 11, and the other end is connected to the bottom wall of the float body 3. The first vent 121, valve chamber 11, and second vent 131 together form an exhaust channel, allowing high-pressure gas inside the pressure cooker to escape through the exhaust channel, accelerating the exhaust process and achieving rapid pressure relief. An elastic element 2 is provided to press against the float body 3, ensuring that the float body 3 always seals the second vent 131 when no external force is applied, reducing pressure loss during pressure cooking and preventing interference with the pressure cooker's high-pressure cooking. When pressure relief is required, the user presses the guide post 4, which moves the float body 3 downwards, disengaging it from the bottom wall of the second vent 131 and opening the exhaust channel. At this time, the elastic element 2 is compressed and deformed. When the guide post 4 is released, the elastic element 2, under its own elastic force, drives the float body 3 upwards until it re-abuts against the bottom wall of the second vent 131, closing the exhaust channel.
[0027] Specifically, the elastic element 2 is a compression spring or a spring sheet, and both ends of the elastic element 2 are fixedly connected to or in contact with the inner bottom wall of the valve cavity 11 and the bottom wall of the float body 3.
[0028] Furthermore, the valve seat 1 includes a valve seat body 12 and a valve core 13. The valve seat body 12 and the valve core 13 are sealed together to form the valve cavity 11. The float body 3 abuts against the valve core 13. The first vent 121 is disposed on the valve seat body 12, and the second vent 131 is disposed on the valve core 13. The bottom end of the elastic member 2 is connected to the valve seat body 12. The valve seat 1 also includes a first sealing ring 7, which is clamped at the connection between the valve seat body 12 and the valve core 13 to achieve a sealed connection between the valve seat body 12 and the valve core 13, preventing high-pressure gas in the valve cavity 11 from escaping through the connection gap between the valve seat body 12 and the valve core 13 into the interior of the pot lid and damaging the internal components of the pot lid.
[0029] Specifically, the valve seat body 12 is fixedly installed on the lid of the pressure cooker by riveting, and a second sealing ring 8 is provided at the connection between the valve seat body 12 and the lid. The second sealing ring 8 is arranged around the first exhaust hole 121 to achieve a sealed connection between the valve seat body 12 and the lid, so as to prevent the high pressure gas in the pot from being discharged into the interior of the lid from the connection gap between the valve seat body 12 and the lid, which would damage the internal components of the lid.
[0030] Furthermore, the bottom wall of the valve core 13 is provided with an annular boss 132 extending into the valve cavity 11. The annular boss 132 is arranged around the second exhaust hole 131, and the top wall of the float body 3 abuts against the bottom wall of the annular boss 132.
[0031] Furthermore, the float body 3 includes a float connecting portion 31 and a stop portion 32. The stop portion 32 is arranged around the float connecting portion 31. The guide post 4 is disposed on the top wall of the float connecting portion 31. The top end of the elastic member 2 is connected to the bottom wall of the float connecting portion 31. The float connecting portion 31 has a disc structure, the elastic member 2 abuts against the bottom wall of the float connecting portion 31, and the guide post 4 is fixedly connected to the top wall of the float connecting portion 31.
[0032] Furthermore, the blocking part 32 includes a blocking part body 321 and an annular surrounding plate 322 disposed at the top of the blocking part body 321. The annular surrounding plate 322 is provided with at least one air passage notch 323. Through the design of the air passage notch 323, the high-pressure gas in the pot can quickly pass through the air gap between the blocking part 32 and the inner wall of the valve chamber 11 after entering the valve chamber 11, and then be discharged to the outside through the second exhaust hole 131, so that the pressure in the pot is rapidly reduced, achieving the effect of rapid pressure reduction.
[0033] Furthermore, there are multiple air passage gaps 323, which are circumferentially spaced on the sidewall of the annular surrounding plate 322 to form a serrated structure at the end of the annular surrounding plate 322. Designing multiple air passage gaps 323 facilitates the faster passage of high-pressure gas through the ventilation gap between the blocking part 32 and the inner sidewall of the valve chamber 11, achieving a faster pressure reduction.
[0034] Furthermore, a clearance groove 111 is formed between the outer wall of the annular boss 132 and the side wall of the valve cavity 11, and the clearance groove 111 is used to accommodate the annular surrounding plate 322. The annular boss 132 can extend into the clearance groove 111 to prevent the annular boss 132 from abutting against the valve core 13 and affecting the discharge of gas in the valve cavity 11.
[0035] Furthermore, the pressure relief valve includes a sealing washer 5. A sealing mounting portion 33 is formed between the annular surrounding plate 322 and the guide post 4. The sealing washer 5 is sleeved on the guide post 4 and located within the sealing mounting portion 33. The sealing washer 5 is used to abut against the annular boss 132 to seal the second vent hole 131. Specifically, the sealing washer 5 is an annular washer, and the outer diameter of the sealing washer 5 is larger than the diameter of the second vent hole 131. The sealing washer 5 is fixedly connected to the top wall of the float connecting portion 31. Specifically, it can be embedded in the sealing mounting portion 33, with the annular washer clamped between the inner side wall of the annular surrounding plate 322 and the outer side wall of the guide post 4; or it can be fixed by adhesive bonding to the top wall of the float connecting portion 31.
[0036] Furthermore, the pressure relief valve also includes a float cap 6, which is connected to the top of the guide post 4 and is located outside the valve seat 1. Because the diameter of the guide post 4 needs to be smaller than the diameter of the second vent hole 131, the guide post 4 can only be made into a relatively thin structure, which is inconvenient for users to press. By placing the float cap 6 on the guide post 4, the user can drive the guide post 4 by pressing the float cap 6. The float cap 6 can be designed to be larger, such as close to the size of a human finger, making it convenient for users to operate and improving the user experience.
[0037] This utility model also provides a pressure cooker, including the pressure relief valve as described above.
[0038] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit the scope of protection of the utility model.
Claims
1. A pressure relief valve, characterized in that, The device includes a valve seat (1), a float body (3), a guide post (4), and an elastic element (2). The valve seat (1) has a valve cavity (11) inside. The valve seat (1) has a first vent hole (121) for communicating with the inner cavity of the pot and a second vent hole (131) for communicating with the outside. The valve cavity (11) is used to connect the first vent hole (121) and the second vent hole (131). The float body (3) is disposed in the valve cavity (11). The guide post (4) is disposed on the top wall of the float body (3). The top end of the guide post (4) extends out of the second vent hole (131). The float body (3) abuts against the bottom wall of the second vent hole (131). One end of the elastic element (2) is connected to the inner bottom wall of the valve cavity (11), and the other end is connected to the bottom wall of the float body (3).
2. The pressure relief valve according to claim 1, characterized in that, The valve seat (1) includes a valve seat body (12) and a valve core (13). The valve seat body (12) and the valve core (13) are sealed together to form the valve cavity (11). The float body (3) abuts against the valve core (13). The first vent hole (121) is provided on the valve seat body (12), and the second vent hole (131) is provided on the valve core (13). The bottom end of the elastic member (2) is connected to the valve seat body (12).
3. The pressure relief valve according to claim 2, characterized in that, The bottom wall of the valve core (13) is provided with an annular boss (132) extending into the valve cavity (11). The annular boss (132) is arranged around the second exhaust hole (131). The top wall of the float body (3) abuts against the bottom wall of the annular boss (132).
4. The pressure relief valve according to claim 3, characterized in that, The float body (3) includes a float connecting part (31) and a stop part (32). The stop part (32) is arranged around the float connecting part (31). The guide post (4) is arranged on the top wall of the float connecting part (31). The top end of the elastic member (2) is connected to the bottom wall of the float connecting part (31).
5. The pressure relief valve according to claim 4, characterized in that, The blocking part (32) includes a blocking part body (321) and an annular surrounding plate (322) provided at the top of the blocking part body (321), and the annular surrounding plate (322) is provided with at least one air passage notch (323).
6. The pressure relief valve according to claim 5, characterized in that, The air passage gaps (323) are multiple, and the multiple air passage gaps (323) are circumferentially spaced on the side wall of the annular enclosure so that the ends of the annular enclosure form a serrated structure.
7. The pressure relief valve according to claim 5, characterized in that, An avoidance groove (111) is formed between the outer wall of the annular boss (132) and the side wall of the valve cavity (11), and the avoidance groove (111) is used to accommodate the annular enclosure plate (322).
8. The pressure relief valve according to claim 7, characterized in that, The pressure relief valve includes a sealing gasket (5), and a sealing mounting portion (33) is formed between the annular surrounding plate (322) and the guide post (4). The sealing gasket (5) is sleeved on the guide post (4) and located inside the sealing mounting portion (33). The sealing gasket (5) is used to abut against the annular boss (132) to seal the second exhaust port (131).
9. The pressure relief valve according to claim 1, characterized in that, The pressure relief valve also includes a float cap (6), which is connected to the top of the guide post (4) and is located outside the valve seat (1).
10. A pressure cooker, characterized in that, Includes the pressure relief valve as described in any one of claims 1-9.