Pressure spring valve structure of pressure cooker
By incorporating a spring valve structure within the float, the problem of requiring holes for spring valve installation in existing pressure cookers is solved, achieving both wide applicability and cost reduction.
Patent Information
- Application Number
- CN202520556700.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-27
AI Technical Summary
The spring valve structure of existing pressure cookers requires independent assembly or drilling, which cannot be matched with existing float valve components, resulting in high production costs and limited applicability.
The spring valve structure is set inside the float, and the rest of the float valve assembly can be used with existing general-purpose pressure cookers without the need for additional holes. Multiple protections are achieved through the cooperation of the float and spring valve assembly.
It expands the application range of pressure cookers, reduces production costs, and provides additional safety protection.
Smart Images
Figure CN223868618U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of pressure control technology, specifically relating to a pressure spring valve structure for a pressure cooker. Background Technology
[0002] Currently, pressure cookers on the market, whether they are flame-powered or electric, generally use a spring valve as an additional safety feature besides the pressure relief valve. If the pressure inside the pot exceeds the pressure limit and the pressure relief valve fails, the spring valve will activate to provide protection. The activation of this spring valve indicates a malfunction in the pressure relief valve or pressure switch.
[0003] Existing spring valves come in various structures. Some are standalone spring valves that need to be independently assembled onto the pot lid, while others integrate the spring valve into the vent pipe of a float valve. However, this latter structure is unique and incompatible with existing float valve assemblies, requiring a new hole to be drilled in the pot lid for installation. If a spring valve could be added to an existing float valve, this new spring valve structure would be compatible with most existing pressure cookers, eliminating the need for additional holes. Utility Model Content
[0004] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a pressure spring valve structure for a pressure cooker. The spring valve structure is set inside the float, and the other components of the float valve assembly can be used with existing general-purpose pressure cookers. It has a wide range of applications and does not require the pressure cooker lid to be re-drilled, which helps to reduce production costs.
[0005] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:
[0006] A pressure spring valve structure for a pressure cooker includes:
[0007] A float valve assembly includes a valve seat and a float, the float being disposed on the valve seat, an axially formed mounting cavity being formed inside the float, a first through hole being provided at the top of the float, and a second through hole being provided at the bottom of the float, both the first through hole and the second through hole communicating with the mounting cavity;
[0008] A spring valve assembly includes a sealing pin, a spring, and an inner sealing ring. The bottom end of the sealing pin is embedded in a second through hole. The inner sealing ring is sleeved on the outside of the sealing pin and is located between the sealing pin and the second through hole. One end of the spring is sleeved on the top of the sealing pin, and the other end of the spring abuts against the inner top surface of the float mounting cavity.
[0009] Preferably, a limiting ring is provided on the side of the sealing nail, which divides the sealing nail into an upper connecting section and a lower connecting section along the axial direction. There is a gap between the limiting ring and the inner wall of the mounting cavity. The outer diameter of the upper connecting section is smaller than the inner diameter of the spring, and the outer diameter of the limiting ring is larger than the inner diameter of the spring. The bottom end of the spring is sleeved on the upper connecting section of the sealing nail and abuts against the limiting ring. The maximum outer diameter of the lower connecting section is smaller than the inner diameter of the second through hole. The lower connecting section is embedded in the second through hole. The inner sealing ring is sleeved on the lower connecting section and abuts against the limiting ring. The outer diameter of the inner sealing ring is larger than the inner diameter of the second through hole.
[0010] Preferably, the float includes a float body and a cover. The float body has an axially oriented mounting cavity with the opening facing upwards. The bottom of the float body has a second through hole communicating with the mounting cavity. The upper part of the circumferential side of the float body has an external threaded surface, and the inner side wall of the cover has an internal threaded surface. The cover is threadedly connected to the float body to close the mounting cavity. The cover has a first through hole communicating with the mounting cavity.
[0011] Preferably, the outer surface of the float is provided with a step, and the outer diameter of the lower half of the float is smaller than the outer diameter of the upper half of the float.
[0012] Preferably, the float valve assembly further includes a limiting ring, the valve seat is provided with a limiting through hole along the axial direction, the lower half of the float passes through the limiting through hole, and the bottom side of the float is provided with an annular groove along the circumferential direction, and the limiting ring is sleeved on the annular groove.
[0013] More preferably, the valve seat includes a float valve screw and a float valve nut, the float valve nut being threadedly connected to the float valve screw, and the float valve screw having a limiting through hole along the axial direction.
[0014] Preferably, the float valve screw is provided with an outer sealing ring.
[0015] Preferably, the outer sealing ring is disposed between the float valve screw and the float valve nut.
[0016] Preferably, both the inner sealing ring and the outer sealing ring are silicone rings.
[0017] Preferably, the limiting ring is a silicone ring.
[0018] Beneficial effects:
[0019] This invention incorporates a spring valve structure within the float, and the remaining components of the float valve assembly are compatible with existing universal pressure cookers, making it widely applicable. It also eliminates the need to drill holes in the pressure cooker lid, thus reducing production costs. Attached Figure Description
[0020] Figure 1 The image shown is a perspective view of this utility model.
[0021] Figure 2 The diagram shown is a schematic representation of the internal structure of this utility model.
[0022] Figure 3 The diagram shown is a schematic diagram of the internal structure of the float of this utility model.
[0023] Reference numerals: 1-Float, 2-Sealing pin, 3-Spring, 4-Inner sealing ring, 5-Mounting cavity, 6-First through hole, 7-Second through hole, 8-Limiting ring, 9-Float valve screw, 10-Float valve nut, 11-Outer sealing ring, 12-Limiting ring, 13-Limiting through hole, 14-Float body, 15-Cover. Detailed Implementation
[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.
[0025] like Figure 1-2 As shown, this utility model proposes a pressure spring valve structure for a pressure cooker, including a float valve assembly and a spring valve assembly. This utility model improves the float 1 of the float valve assembly, and the spring valve assembly is disposed within the float 1. The technical solution of this utility model is described in detail below with specific structural details:
[0026] like Figure 2 As shown, an axially oriented mounting cavity 5 is formed inside the float 1. A first through hole 6 is provided at the top of the float 1, and a second through hole 7 is provided at the bottom of the float 1. Both the first through hole 6 and the second through hole 7 communicate with the mounting cavity 5. The mounting cavity 5, the first through hole 6, and the second through hole 7 form a passage, allowing the space inside the pressure cooker to connect with the outside. A spring valve assembly is disposed inside the mounting cavity 5 to control the opening or closing of this passage.
[0027] like Figure 1-3As shown, the spring 3 assembly includes a sealing pin 2, a spring 3, and an inner sealing ring 4. The bottom end of the sealing pin 2 is embedded in the second through hole 7. The inner sealing ring 4 is sleeved on the outside of the sealing pin 2 and is located between the sealing pin 2 and the second through hole 7. One end of the spring 3 is sleeved on the top of the sealing pin 2, and the other end of the spring 3 abuts against the inner top surface of the mounting cavity 5 inside the float 1. It is easy to understand that the spring 3 is always in a compressed state inside the mounting cavity 5. Under normal circumstances, the spring 3 causes the sealing pin 2 to press against the bottom surface inside the mounting cavity 5, and the inner sealing ring 4 closes the second through hole 7, thus disconnecting the passage inside the float 1. The pressure cooker cannot release pressure through the passage inside the float 1. When the high pressure inside the pressure cooker pushes the sealing pin 2 upward, the second through hole 7 reconnects with the mounting cavity 5, thus releasing pressure.
[0028] The working principle of the spring valve assembly is as follows: when the float valve 1 malfunctions and cannot release pressure in time, the sealing pin 2 is pushed upward by the high pressure inside the pressure cooker, causing the spring 3 to compress. The inner sealing ring 4 separates from the bottom surface of the mounting cavity 5 inside the float 1, and the second through hole 7 connects with the mounting cavity 5. High-pressure water vapor is discharged outward along the second through hole 7, the mounting cavity 5, and the first through hole 6, thus completing the pressure release. When the pressure inside the pressure cooker is less than the force exerted by the spring 3 on the sealing pin 2 after pressure release, the spring 3 drives the sealing pin 2 to descend, once again isolating the second through hole 7 from the mounting cavity 5.
[0029] This invention incorporates a spring valve structure within the float 1. The remaining components of the float valve assembly can be conventional. This invention is applicable to most existing pressure cookers, providing an additional layer of protection for the pressure cooker.
[0030] like Figure 2-3 As shown, a step is provided on the outer side of the float 1, and the outer diameter of the lower half of the float 1 is smaller than the outer diameter of the upper half of the float 1. In this utility model, the function of the float 1 is the same as that of the existing float 1. The float 1 has the function of rising upwards. The float 1 of this utility model is larger at the top and smaller at the bottom. The float 1 is installed in the float valve assembly. When the float 1 is subjected to pressure inside the pot, it will rise upwards and play a role in relieving pressure.
[0031] like Figure 2As shown, the float valve assembly includes a float 1, a valve seat, and a limiting ring 12. The valve seat is mounted on the pot lid, and a limiting through hole 13 is provided along the axial direction of the valve seat. The lower half of the float 1 passes through the limiting through hole 13, and an annular groove is provided circumferentially on the bottom side of the float 1. The limiting ring 12 is fitted onto the annular groove. It is easy to understand that the limiting through hole 13 in the valve seat cooperates with the float 1. The inner diameter of the bottom end of the limiting through hole 13 is smaller than the inner diameter of the top end. After the float 1 passes through the limiting through hole 13, the upper half of the float 1 is stuck inside the limiting through hole 13, and the float 1 closes the bottom opening of the limiting through hole 13. When the float 1 is subjected to pressure, the float 1 rises, and the limiting through hole 13 is connected again, completing the pressure relief. The limiting ring 12 prevents the float 1 from dislodging from the valve seat when it rises.
[0032] Furthermore, the valve seat includes a float valve screw 9 and a float valve nut 10. The float valve nut 10 is threadedly connected to the float valve screw 9, and the float valve screw 9 has a limiting through hole 13 along the axial direction. After the mounting hole is opened in the pot lid, the float valve screw 9 exits from the mounting hole through the inner wall of the pot lid, and the float valve nut 10 is threadedly connected to the float valve screw 9 on the outer side of the pot lid, thus fixing the valve seat to the pot lid.
[0033] Furthermore, the float valve screw 9 is equipped with an outer sealing ring 11. The outer sealing ring 11 is located between the float valve screw 9 and the float valve nut 10. It is easy to understand that the outer sealing ring 11 is located between the float valve screw 9 and the inner wall of the pot lid. After the float valve screw 9 and the float valve nut 10 are locked, the outer sealing ring 11 seals the gap of the mounting hole of the pot lid.
[0034] The working principle of this utility model is as follows: Under normal circumstances, when the pressure inside the pressure cooker reaches a certain level, the float 1 will be lifted first, and the limiting through hole 13 of the valve seat will be in a passable state, which will play a role in relieving pressure. The high-pressure airflow will flow out from the gap between the float 1 and the valve seat, so that the float 1 is in a suspended state. When the pressure inside the pot is not enough to lift the float 1, the float 1 will fall, and the pressure cooker will be restored to a sealed state again.
[0035] In abnormal situations, such as when float 1 rises to the point where the limiting ring 12 at the bottom of float 1 blocks the limiting through hole 13, or when float 1 valve fails for other reasons, the pressure cooker remains sealed. The high pressure inside the cooker pushes up the sealing pin 2 inside float 1, connecting the space inside float 1 with the outside world, thus releasing pressure. During this process, float 1 may fall back down under gravity and resume its function. When the high pressure inside the cooker is insufficient to push up the sealing pin 2, spring 3 drives the sealing pin 2 to reset.
[0036] In this invention, the inner sealing ring 4 is a silicone ring.
[0037] In this invention, both the outer sealing ring 11 and the limiting ring 12 are silicone rings.
[0038] Example 1
[0039] The sealing nail 2 structure of this utility model can be diverse. This embodiment proposes a feasible sealing nail 2 structure.
[0040] A limiting ring 8 is provided on the side of the sealing nail 2. The limiting ring 8 divides the sealing nail 2 into an upper connecting section and a lower connecting section along the axial direction. There is a gap between the limiting ring 8 and the inner wall of the mounting cavity 5. The outer diameter of the upper connecting section is smaller than the inner diameter of the spring 3, and the outer diameter of the limiting ring 8 is larger than the inner diameter of the spring 3. The bottom end of the spring 3 is sleeved on the upper connecting section of the sealing nail 2, and the bottom end of the spring 3 abuts against the limiting ring 8. The maximum outer diameter of the lower connecting section is smaller than the inner diameter of the second through hole 7. The lower connecting section is embedded in the second through hole 7. The lower connecting section of the sealing nail 2 can move along the second through hole 7. The inner sealing ring 4 is sleeved on the lower connecting section, and the inner sealing ring 4 abuts against the limiting ring 8. The outer diameter of the inner sealing ring 4 is larger than the inner diameter of the second through hole 7.
[0041] Example 2
[0042] To facilitate the installation of the spring valve assembly, the structure of the float 1 is improved in this embodiment. The float 1 includes a float body 14 and a cover 15. The float body 14 has an axially formed mounting cavity 5 with the opening facing upward. A second through hole 7 is provided at the bottom of the float body 14, which communicates with the mounting cavity 5. An external threaded surface is provided on the upper part of the circumferential side of the float body 14, and an internal threaded surface is provided on the inner sidewall of the cover 15. The cover 15 is threadedly connected to the float body 14 to close the mounting cavity 5. A first through hole 6 is provided in the cover 15, which communicates with the mounting cavity 5.
[0043] In this utility model, the float 1 adopts a threaded, detachable structure, which facilitates the installation of the spring valve assembly. The sealing pin 2 and the spring 3 are sequentially inserted into the mounting cavity 5 of the float body 14, and finally the cover 15 is tightened onto the float body 14, thus completing the assembly of the spring 3 valve within the float 1. Figure 3 As shown, the cover 15 is located in the upper half of the float 1, and the limiting ring 12 is located at the bottom of the float body 14.
[0044] The embodiments provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the core ideas of this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.
Claims
1. A pressure spring valve structure for a pressure cooker, characterized in that, include: A float valve assembly includes a valve seat and a float (1). The float (1) is disposed on the valve seat. An axial mounting cavity (5) is formed inside the float (1). A first through hole (6) is provided at the top of the float (1), and a second through hole (7) is provided at the bottom of the float (1). Both the first through hole (6) and the second through hole (7) are connected to the mounting cavity (5). The spring valve assembly includes a sealing pin (2), a spring (3), and an inner sealing ring (4). The bottom end of the sealing pin (2) is embedded in the second through hole (7). The inner sealing ring (4) is sleeved on the outside of the sealing pin (2) and is located between the sealing pin (2) and the second through hole (7). One end of the spring (3) is sleeved on the top of the sealing pin (2), and the other end of the spring (3) abuts against the inner top surface of the float (1) mounting cavity (5).
2. The pressure spring valve structure according to claim 1, characterized in that, The sealing nail (2) is provided with a limiting ring (8) on its side. The limiting ring (8) divides the sealing nail (2) into an upper connecting section and a lower connecting section along the axial direction. There is a gap between the limiting ring (8) and the inner wall of the mounting cavity (5). The outer diameter of the upper connecting section is smaller than the inner diameter of the spring (3). The outer diameter of the limiting ring (8) is larger than the inner diameter of the spring (3). The bottom end of the spring (3) is sleeved on the upper connecting section of the sealing nail (2) and abuts against the limiting ring (8). The maximum outer diameter of the lower connecting section is smaller than the inner diameter of the second through hole (7). The lower connecting section is embedded in the second through hole (7). The inner sealing ring (4) is sleeved on the lower connecting section and abuts against the limiting ring (8). The outer diameter of the inner sealing ring (4) is larger than the inner diameter of the second through hole (7).
3. The pressure spring valve structure according to claim 1, characterized in that, The float (1) includes a float body (14) and a cover (15). The float body (14) has an axially oriented mounting cavity (5) with the opening facing upward. The bottom of the float body (14) has a second through hole (7) that communicates with the mounting cavity (5). The upper part of the circumferential side of the float body (14) has an external thread surface, and the inner sidewall of the cover (15) has an internal thread surface. The cover (15) is threadedly connected to the float body (14) to close the mounting cavity (5). The cover (15) has a first through hole (6) that communicates with the mounting cavity (5).
4. The pressure spring valve structure according to claim 1, characterized in that, A step is provided on the outer side of the float (1), and the outer diameter of the lower half of the float (1) is smaller than the outer diameter of the upper half of the float (1).
5. The pressure spring valve structure according to claim 4, characterized in that, The float valve assembly also includes a limiting ring (12), the valve seat is provided with a limiting through hole (13) along the axial direction, the lower half of the float (1) passes through the limiting through hole (13), and the bottom side of the float (1) is provided with an annular groove along the circumferential direction, and the limiting ring (12) is sleeved on the annular groove.
6. The pressure spring valve structure according to any one of claims 1-5, characterized in that, The valve seat includes a float valve screw (9) and a float valve nut (10), the float valve nut (10) being threadedly connected to the float valve screw (9), and the float valve screw (9) having a limiting through hole (13) along the axial direction.
7. The pressure spring valve structure according to claim 6, characterized in that, The float valve screw (9) is provided with an outer sealing ring (11).
8. The pressure spring valve structure according to claim 7, characterized in that, The outer sealing ring (11) is disposed between the float valve screw (9) and the float valve nut (10).
9. The pressure spring valve structure according to claim 7 or 8, characterized in that, Both the inner sealing ring (4) and the outer sealing ring (11) are silicone rings.
10. The pressure spring valve structure according to claim 5, characterized in that, The limiting ring (12) is a silicone ring.