A pressure limiting device for a pressure cooker
By designing an automated pressure limiting device, the problems of uncontrolled pressure release and undercooked food in pressure cookers have been solved, thus improving pressure stability and user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHANJIANG HALLSMART ELECTRICAL APPLIANCE CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-07
AI Technical Summary
Existing pressure cooker pressure limiting devices have complex structures and unreasonable designs. The pressure release process is uncontrolled, which can easily lead to food not being cooked properly. They also require manual intervention and are prone to misalignment after prolonged use.
A pressure limiting device including a pressure limiting seat and a center seat was designed. Automatic pressure limiting is achieved through structures such as annular venting groove, inclined groove and guide rod. The gas regulating block slides on the guide rod to automatically adjust the pressure and avoid excessive pressure relief. The pressure relief rate is adjusted by interception plate.
It achieves automated pressure limiting, preventing food from being undercooked, ensuring pressure stability, improving the user experience, and avoiding misalignment of the device after prolonged use.
Smart Images
Figure CN224461474U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pressure cooker technology, specifically a pressure limiting device for a pressure cooker. Background Technology
[0002] A pressure cooker is a special type of cooking appliance whose core design and function revolve around using a high-pressure environment to significantly accelerate cooking and alter cooking results. Pressure cookers require a pressure-limiting device to control the internal pressure during operation and prevent excessive pressure buildup.
[0003] Existing pressure cooker pressure limiting devices have complex structures and unreasonable designs. They automatically open and release pressure when the pressure inside the cooker becomes too high, but the pressure release process is usually not improved. During pressure release, gas is rapidly released to the outside, causing the pressure inside the cooker to drop rapidly in a short time, resulting in undercooked food. Furthermore, existing pressure limiting devices do not work automatically and require manual intervention. The pressure-limiting structure within the device lacks any limiting mechanism, and its movement is uncontrolled. Over time, misalignment can occur, causing the pressure-limiting function to fail. Therefore, the inventor has improved the structure of the pressure cooker pressure limiting device. Utility Model Content
[0004] The purpose of this utility model is to provide a pressure limiting device for a pressure cooker. This pressure limiting device has a simple structure and reasonable design, and plays an automatic pressure limiting role. The pressure limiting process is automated and does not require manual intervention. Furthermore, the movement of the gas regulating block is more controllable, and its stability can be guaranteed even after long-term use without misalignment. It avoids situations where the pressure is released too quickly in a short period of time, and it can also ensure relatively stable pressure during pressure release, thus preventing food from being undercooked. This solves the problems mentioned in the above-mentioned technical background.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure limiting device for a pressure cooker, comprising a pressure limiting seat and a central seat disposed on the pressure limiting seat. The pressure limiting seat includes a seat body, on which a ring-shaped venting groove is provided. The venting groove includes an air inlet groove and a first inclined groove communicating with the air inlet groove, and also includes a second inclined groove and an air outlet groove communicating with the second inclined groove. The first inclined groove is located below the second inclined groove. The central seat includes an adjusting seat, which is fixed inside the seat body. The adjusting seat divides the seat body into two equal-sized bottle-shaped structures, which are distributed at both ends of the adjusting seat. The adjusting seat is a hollow cavity structure with openings at both ends. An air delivery groove is provided on the outer side of the cavity structure, and a support column is fixed inside the cavity structure. A guide rod is fixed inside the support column, and a sliding device is mounted on the guide rod. A gas regulating block is provided, and a pressure stabilizing plate and a conductive block are sequentially arranged on the lower end face of the gas regulating block. The two ends of the pressure stabilizing plate are fixed to the gas regulating block and the conductive block, respectively. The conductive block is located between the air inlet groove and the first inclined groove, and the conductive block is in contact with the inner wall of the air inlet groove. When the conductive block is in the lowest position, it separates the air inlet groove from the first inclined groove, and gas cannot pass through the air inlet groove, thereby maintaining the pressure inside the pressure cooker. When the pressure from below the base pushes the conductive block upward, the air inlet groove and the first inclined groove are connected, and gas can be released at this time to achieve the pressure relief function. After a portion of the pressure is released, the conductive block returns to its original position under the action of gravity. Therefore, the conductive block plays a good role in limiting pressure, so that the pressure cooker can maintain a certain pressure, automatically relieve pressure when the pressure is too high, and avoid excessive pressure relief. Moreover, the pressure relief process is completed automatically without manual intervention.
[0006] Preferably, multiple support blocks are fixed on the inner wall of the air intake groove, and the multiple support blocks are evenly distributed in the air intake groove.
[0007] Preferably, a step is provided above multiple support blocks in the air intake slot, and the step is located below the guide block. When the guide block is in its lowest position, it presses against the step.
[0008] Preferably, the openings on both sides of the gas delivery groove are located on the upper and lower end faces of the adjusting seat, respectively, and the openings on both sides of the gas delivery groove are connected to the first inclined groove and the second inclined groove, respectively.
[0009] Preferably, several intercepting plates are fixed on the inner wall of the gas delivery channel. The multiple sets of intercepting plates can slow down the rate at which gas passes through the gas delivery channel, thus preventing the pressure from dropping rapidly in a short period of time.
[0010] Preferably, there are two support columns and two guide rods, with the two support columns symmetrically arranged in the cavity of the adjustment seat.
[0011] Preferably, both guide rods are vertically arranged and symmetrical to both ends of the gas regulating block. The two guide rods ensure that the gas regulating block can slide smoothly in the vertical direction without shaking.
[0012] Preferably, a rubber sleeve is fixed on the outside of the pressure stabilizing plate. The rubber sleeve is in contact with the inner wall of the cavity of the regulating seat. When the gas regulating block is raised or lowered, the rubber sleeve will slide along the inner wall of the cavity of the regulating seat and play a sealing role. In this embodiment, the rubber sleeve is made of rubber and is used to separate the area above and below the gas regulating block in the cavity of the regulating seat.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] 1. This utility model provides a pressure limiting device for a pressure cooker. The pressure limiting device includes a pressure limiting seat and a central seat disposed on the pressure limiting seat. The overall structure is simple and reasonably designed. The pressure limiting seat includes a seat body with an annular vent groove running through it. The central seat includes an adjusting seat fixed inside the seat body. The adjusting seat is a hollow cavity structure with openings at both ends. A gas delivery groove is disposed on the outer side of the cavity structure, and a support column is fixed inside the cavity structure. A guide rod is fixed inside the support column, and a gas regulating block is slidably disposed on the guide rod. A pressure stabilizing plate and a conductive channel are sequentially disposed on the lower end face of the gas regulating block. During the operation of the pressure cooker, the pressure inside continuously increases, causing the gas to push the guide block upwards. When it reaches a certain height, the gas enters the first inclined channel through the air inlet slot, then passes through the air outlet slot and the second inclined channel, finally exiting from the air outlet slot and reducing the pressure. This achieves automatic pressure relief, preventing accidents caused by excessive pressure. When the pressure inside the pressure cooker drops to a certain value, the guide block automatically falls back to its original position under the action of gravity, preventing excessive pressure relief. Therefore, this device plays an automatic pressure limiting role. The pressure limiting process is automated and does not require manual intervention or operation, improving the user experience. It is highly practical and suitable for widespread use.
[0015] 2. The gas regulating block in this utility model is provided with guide rods at both ends. The movement of the gas regulating block is within the range limited by the two guide rods throughout the entire movement. In addition, the pressure stabilizing plate below the gas regulating block and the inner wall of the cavity of the regulating seat are sealed, making the movement of the gas regulating block more controllable. Its stability can be guaranteed even after long-term use, and misalignment will not occur.
[0016] 3. The ventilation groove in this utility model includes an air inlet groove and a first inclined groove communicating with the air inlet groove, as well as a second inclined groove and an air outlet groove communicating with the second inclined groove. The openings on both sides of the air delivery groove are respectively connected to the first inclined groove and the second inclined groove. When depressurizing, the gas needs to pass through the air inlet groove, the first inclined groove, the air delivery groove, the second inclined groove and the air outlet groove in sequence before it can be released. In addition, the setting of several intercepting plates can effectively reduce the depressurization rate and avoid the situation of excessively rapid pressure release in a short period of time. It can also ensure the relative stability of pressure during depressurization, thereby avoiding the situation of food not being cooked. Attached Figure Description
[0017] Figure 1 This is the front view of the present invention;
[0018] Figure 2 This utility model Figure 1 Sectional view of AA;
[0019] Figure 3 This utility model Figure 2 Enlarged view of B in the middle;
[0020] Figure 4 This is an overall structural diagram of the present invention.
[0021] The reference numerals and names in the figure are as follows: 1. Pressure limiting seat; 11. Seat body; 111. Air inlet slot; 112. First inclined slot; 113. Second inclined slot; 114. Air outlet slot; 12. Support block; 121. Step; 2. Center seat; 21. Adjusting seat; 211. Air delivery slot; 22. Support column; 23. Guide rod; 24. Gas regulating block; 25. Pressure stabilizing plate; 26. Conductor block; 27. Rubber sleeve; 28. Interceptor plate. Detailed Implementation
[0022] 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.
[0023] In the description of the embodiments of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," 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 the embodiments of this utility model and simplifying the description. They do not 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. 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 indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly specified.
[0024] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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 embodiment of the invention according to the specific circumstances.
[0025] Please see Figure 1 One embodiment of this utility model is a pressure limiting device for a pressure cooker, which includes a pressure limiting seat 1 and a center seat 2 disposed on the pressure limiting seat 1.
[0026] Please see Figure 2 The pressure limiting seat 1 includes a seat body 11, on which a ring-shaped vent groove is provided. The vent groove includes an air inlet groove 111 and a first inclined groove 112 communicating with the air inlet groove 111, as well as a second inclined groove 113 and an air outlet groove 114 communicating with the second inclined groove 113. The first inclined groove 112 is located below the second inclined groove 113. The center seat 2 includes an adjusting seat 21, which is fixed inside the seat body 11. Multiple support blocks 12 are fixed on the inner wall of the air inlet groove 111, and the multiple support blocks 12 are evenly distributed in the air inlet groove 111. A step 121 is provided above the multiple support blocks 12 in the air inlet groove 111. The adjusting seat 21 divides the seat body 11 into two bottle-shaped structures of equal size, which are distributed at both ends of the adjusting seat 21.
[0027] Please see Figures 3 to 4The regulating seat 21 is a hollow cavity structure with openings at both ends. An air delivery groove 211 is provided on the outer side of this cavity structure. The openings on both sides of the air delivery groove 211 are located on the upper and lower end faces of the regulating seat 21, respectively, and these openings communicate with the first inclined groove 112 and the second inclined groove 113, respectively. Two support columns 22 are fixed inside the cavity structure, and two symmetrically arranged guide rods 23 are fixed inside each of the two support columns 22. The two support columns 22 are symmetrically arranged within the cavity of the regulating seat 21. Gas regulating blocks 24 are slidably mounted on the two guide rods 23. Both guide rods 23 are vertically arranged, and the two guide rods 24 are slidably mounted on the guide rods 23. Rods 23 are symmetrical to both ends of the gas regulating block 24. The two guide rods 23 ensure that the gas regulating block 24 can slide smoothly in the vertical direction without shaking. A pressure stabilizing plate 25 and a conductive block 26 are sequentially arranged on the lower end face of the gas regulating block 24. The two ends of the pressure stabilizing plate 25 are fixed to the gas regulating block 24 and the conductive block 26, respectively. Step 121 is located below the conductive block 26. When the conductive block 26 is in its lowest position, it presses against the step 121. The conductive block 26 is located between the air inlet groove 111 and the first inclined groove 112, and the conductive block 26 is in contact with the inner wall of the air inlet groove 111. When the conductive block 26 is in its lowest position... It separates the air inlet groove 111 from the first inclined groove 112, preventing gas from passing through the air inlet groove 111 and thus maintaining the pressure inside the pressure cooker. When the pressure from below the base 11 pushes the guide block 26 upward, the air inlet groove 111 and the first inclined groove 112 become connected, allowing gas to be released and achieving the pressure relief function. After a portion of the pressure is released, the guide block 26 returns to its original position under the action of gravity. Therefore, the guide block 26 effectively plays the role of pressure limiting, ensuring that the pressure inside the pressure cooker maintains a certain pressure and automatically relieves pressure when it becomes too high, without excessive pressure relief. Moreover, the pressure relief process is completely automatic and requires no manual intervention. In addition, the pressure stabilizing plate... A rubber sleeve 27 is fixed to the outside of the gas regulating block 24. The rubber sleeve 27 is in contact with the inner wall of the cavity of the regulating seat 21. When the gas regulating block 24 is raised or lowered, the rubber sleeve 27 slides along the inner wall of the cavity of the regulating seat 21 and plays a sealing role. In this embodiment, the rubber sleeve 27 is made of rubber. The rubber sleeve 27 is used to separate the area above and below the gas regulating block 24 in the cavity of the regulating seat 21. Several intercepting plates 28 are fixed on the inner wall of the gas delivery channel 211. Several intercepting plates 28 surround the inner wall of the gas delivery channel 211. By setting multiple sets of intercepting plates 28, the rate of gas passage in the gas delivery channel 211 can be slowed down, and the pressure can be prevented from dropping rapidly in a short time.
[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A pressure limiting device for a pressure cooker, characterized in that: The device includes a pressure limiting seat (1) and a center seat (2) disposed on the pressure limiting seat (1). The pressure limiting seat (1) includes a seat body (11), on which a ring-shaped vent groove is disposed. The vent groove includes an air inlet groove (111) and a first inclined groove (112) communicating with the air inlet groove (111), as well as a second inclined groove (113) and an air outlet groove (114) communicating with the second inclined groove (113). The first inclined groove (112) is located below the second inclined groove (113). The center seat (2) includes an adjusting seat (21), which is fixed inside the seat body (11) and has openings at both ends. The cavity structure is hollow inside. An air delivery groove (211) is provided on the outside of the cavity structure, and a support column (22) is fixed inside the cavity structure. A guide rod (23) is fixed inside the support column (22). A gas regulating block (24) is slidably provided on the guide rod (23). A pressure stabilizing plate (25) and a guide block (26) are arranged sequentially on the lower end face of the gas regulating block (24). The two ends of the pressure stabilizing plate (25) are fixed to the gas regulating block (24) and the guide block (26) respectively. The guide block (26) is located between the air inlet groove (111) and the first inclined groove (112), and the guide block (26) is in contact with the inner wall of the air inlet groove (111).
2. The pressure limiting device for a pressure cooker according to claim 1, characterized in that: The inner wall of the air intake groove (111) is fixed with a plurality of support blocks (12), and the plurality of support blocks (12) are evenly distributed in the air intake groove (111).
3. The pressure limiting device for a pressure cooker according to claim 2, characterized in that: A step (121) is provided in the air intake groove (111) above the multiple support blocks (12), and the step (121) is located below the guide block (26).
4. The pressure limiting device for a pressure cooker according to claim 1, characterized in that: The openings on both sides of the gas delivery groove (211) are located on the upper and lower end faces of the adjustment seat (21), respectively, and the openings on both sides of the gas delivery groove (211) are connected to the first inclined groove (112) and the second inclined groove (113), respectively.
5. The pressure limiting device for a pressure cooker according to claim 1, characterized in that: The inner wall of the gas delivery channel (211) is fixed with a number of intercepting plates (28), which surround the inner wall of the gas delivery channel (211).
6. The pressure limiting device for a pressure cooker according to claim 1, characterized in that: Two support columns (22) and two guide rods (23) are provided, and the two support columns (22) are symmetrically arranged in the cavity of the adjustment seat (21).
7. The pressure limiting device for a pressure cooker according to claim 6, characterized in that: Both guide rods (23) are vertically arranged and are symmetrical about the two ends of the gas regulating block (24).
8. The pressure limiting device for a pressure cooker according to claim 1, characterized in that: A rubber sleeve (27) is fixed to the outside of the voltage stabilizer plate (25), and the rubber sleeve (27) is in contact with the inner wall of the cavity of the adjusting seat (21).