Pressure relief valve body structure and cookware applying same

Abstract

The utility model discloses a pressure relief valve body structure which comprises a pressure relief valve arranged on an installation cavity of a pot cover. A mounting hole and a pressure relief groove are formed in the cavity bottom of the mounting cavity; the pressure release valve comprises an elastic sealing part, an elastic mounting part, an elastic pressure release part and an elastic pressing part which are sequentially connected from bottom to top; the pressure release valve has a sealing state and a pressure release state: when the pressure release valve is in the sealing state, the elastic sealing part abuts against a cavity opening of the sealing mounting cavity in an interference manner, so that the space in the cooker is isolated from the mounting cavity; when the pressure relief valve is in a pressure relief state, the elastic pressing part can be pressed downwards to drive the elastic sealing part to form a pressure relief gap with the cavity opening of the mounting cavity, so that the space in the pot is communicated with the outside of the pot through the mounting cavity and the pressure relief groove. According to the pressure relief valve body structure and the cooker applying the pressure relief valve body structure, when steam pressure in the cooker is increased and needs to be quickly released, the pressure relief valve body structure can be used for sealing and pressure relief by means of the pressure relief groove and the pressure relief valve structure, and the sealing effect and the use safety of the cooker are ensured.

Description

Technical Field

[0001] This utility model relates to the field of cookware technology, and in particular to a pressure relief valve body structure and a cookware using the same. Background Technology

[0002] For cookware that uses high temperature and pressure for cooking, existing cookware is generally equipped with a pressure relief valve to ensure safety during use. The working principle of the existing pressure relief valve is as follows: when the internal pressure of the cookware (hereinafter referred to as "internal pressure") exceeds a set pressure relief threshold, the internal pressure overcomes the spring force, pushing the valve core open, thus releasing pressure; when the internal pressure is normal or low, the spring force keeps the valve core closed, thus achieving a seal. However, after prolonged use, the spring force of the pressure relief valve tends to decrease, causing a lower pressure to overcome the force that originally required higher pressure. This results in the valve core opening before reaching the originally set pressure relief threshold, leading to pressure leakage and failing to achieve a proper seal, affecting usability and safety. Utility Model Content

[0003] The purpose of this utility model is to propose a pressure relief valve body structure and a cookware using it. When the steam pressure inside the pot increases, it needs to be released quickly to avoid excessive pressure inside the pot. The pressure relief valve body structure can effectively seal and relieve pressure by means of the pressure relief groove and the structure of the pressure relief valve, ensuring the sealing effect and safety of the cookware, thus overcoming the shortcomings of the prior art.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A pressure relief valve body structure includes a pressure relief valve disposed on a mounting cavity of a pot lid;

[0006] The lid of the pot has an upward protrusion on its surface to form the mounting cavity. The bottom of the mounting cavity has a mounting hole and a pressure relief groove, and the mounting hole is connected to the pressure relief groove.

[0007] The pressure relief valve includes an elastic sealing part, an elastic mounting part, an elastic pressure relief part, and an elastic pressing part connected sequentially from bottom to top. The elastic sealing part is elastically abutted against the opening of the mounting cavity and placed inside the pot space. The elastic mounting part is located inside the mounting cavity. The elastic pressure relief part and the elastic pressing part both penetrate the mounting hole and are sequentially installed on the outside of the mounting cavity.

[0008] The pressure relief valve includes a sealed state and a pressure relief state:

[0009] When the pressure relief valve is in a sealed state, the elastic sealing part presses against the opening of the mounting cavity to seal the space inside the pot from the mounting cavity.

[0010] When the pressure relief valve is in the pressure relief state, the elastic pressing part can be pressed down to drive the elastic sealing part to form a pressure relief gap between the cavity of the mounting cavity and the cavity of the mounting cavity, so that the space inside the pot can be connected to the outside of the pot through the mounting cavity and the pressure relief groove.

[0011] Furthermore, the height of the elastic sealing portion is greater than the height of the mounting cavity.

[0012] Furthermore, at least four pressure relief grooves are provided, and the four pressure relief grooves are evenly circumferentially connected to the outer edge of the mounting hole.

[0013] Furthermore, the pressure relief groove is rectangular in shape.

[0014] Furthermore, the elastic sealing part, the elastic mounting part, the elastic pressure relief part, and the elastic pressing part are integrally formed.

[0015] Furthermore, the pressure relief valve is made of either rubber or silicone.

[0016] Furthermore, the cross-sectional shape of the mounting hole and the cross-sectional shape of the elastic mounting part are matched, and the mounting hole and the elastic mounting part are installed in a clearance fit manner.

[0017] A cookware includes a lid and a pot body, wherein the lid is detachably mounted on top of the pot body, and the lid and the pot body together enclose an interior space of the pot;

[0018] The lid of the pot protrudes upward to form the mounting cavity. The bottom of the mounting cavity is provided with a mounting hole and a pressure relief groove. The mounting hole communicates with the pressure relief groove. The mounting cavity is equipped with the aforementioned pressure relief valve body structure.

[0019] The technical solution provided by this utility model can include the following beneficial effects:

[0020] 1. Since the pressure relief groove is connected to the mounting hole, and both the elastic pressure relief part and the elastic pressing part can undergo elastic deformation, when installing the pressure relief valve, the design of the pressure relief groove being connected to the mounting hole allows the mounting hole to be slightly enlarged when the elastic pressure relief part and the elastic pressing part are inserted into the mounting hole, so that the elastic pressure relief part and the elastic pressing part can pass through the mounting hole and be installed sequentially on the outside of the mounting cavity. After the elastic pressure relief part and the elastic pressing part pass through the mounting hole, the mounting hole returns to its original state, thereby allowing the elastic sealing part to press against the opening of the sealing mounting cavity.

[0021] 2. In the sealed state, meaning the interior of the pot cannot communicate with the outside, the elastic sealing part presses against the opening of the sealing mounting cavity, effectively sealing the mounting hole and pressure relief groove, preventing the pressure relief groove from communicating with the interior of the pot. Furthermore, as the steam pressure inside the pot gradually increases, the steam pressure exerts an upward pressure on the elastic sealing part, effectively applying an upward force to it. This further increases the pressure difference between the elastic sealing part and the opening of the mounting cavity, further sealing the pot and preventing pressure leakage during cooking.

[0022] 3. In the depressurized state, manually pressing the elastic pressing part applies a downward force to the elastic pressure relief part, simultaneously causing the elastic sealing part to move downward. A gap is created between the elastic sealing part and the opening of the mounting cavity, allowing steam pressure to escape from the pressure relief groove. Simultaneously, because the pressure relief groove is connected to the mounting hole, the downward pressure on the elastic pressure relief part widens the pressure relief opening of the groove, thereby increasing the amount of steam flowing from inside the boiler to the outside. Therefore, when the steam pressure inside the boiler increases and rapid release is needed to prevent excessive pressure, the pressure relief valve body structure of this application can effectively relieve pressure using the pressure relief groove and the structure of the pressure relief valve. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a pressure relief valve body according to this utility model.

[0024] Figure 2 This is a cross-sectional view of a pressure relief valve body structure of this utility model under pressure relief conditions.

[0025] Figure 3 This is another cross-sectional view of the pressure relief valve body structure of this utility model.

[0026] Figure 4 This utility model relates to a pressure relief valve body structure. Figure 2 Enlarged view of point A in the middle.

[0027] Figure 5 This utility model relates to a pressure relief valve body structure. Figure 3 Enlarged view of point B in the middle.

[0028] The components include: pot body 1, pot lid 2, mounting hole 21, pressure relief groove 22, mounting cavity 23, pressure relief valve 3, elastic sealing part 31, elastic mounting part 32, elastic pressure relief part 33, and elastic pressing part 34. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] This technical solution provides a pressure relief valve body structure, including a pressure relief valve 3 disposed on the mounting cavity 23 of the pot lid 2;

[0031] The lid 2 has an upward protrusion on its surface to form the mounting cavity 23. The bottom of the mounting cavity 23 is provided with a mounting hole 21 and a pressure relief groove 22. The mounting hole 21 is connected to the pressure relief groove 22.

[0032] The pressure relief valve 3 includes an elastic sealing part 31, an elastic mounting part 32, an elastic pressure relief part 33, and an elastic pressing part 34 connected sequentially from bottom to top. The elastic sealing part 31 is elastically abutted against the opening of the mounting cavity 23 and placed inside the pot space. The elastic mounting part 32 is located inside the mounting cavity 23. The elastic pressure relief part 33 and the elastic pressing part 34 both penetrate the mounting hole 21 and are sequentially installed on the outside of the mounting cavity 23.

[0033] The pressure relief valve 3 includes a sealed state and a pressure relief state:

[0034] When the pressure relief valve 3 is in a sealed state, the elastic sealing part 31 presses against the opening of the mounting cavity 23 to seal the space inside the pot from the mounting cavity 23.

[0035] When the pressure relief valve 3 is in the pressure relief state, the elastic pressing part 34 can be pressed down to drive the elastic sealing part 31 to form a pressure relief gap between the cavity of the mounting cavity 23 and the cavity of the mounting cavity 23, so that the space inside the pot can be connected to the outside of the pot through the mounting cavity 23 and the pressure relief groove 22.

[0036] In this embodiment, the pressure relief valve body provided by this technical solution is generally applied to cookware that uses high temperature and high pressure inside the pot for cooking, such as pressure cookers, and is also suitable for any other cookware that requires pressure relief. During cooking, the lid 2 is placed on top of the pot body 1 to form a sealed cavity for cooking. The sealed cavity is the space inside the pot. The space inside the pot body 1 is used to hold the food to be cooked and water. Steam is generated by heating and steam pressure is accumulated. The steam pressure is used to speed up the cooking efficiency. Therefore, in the early stage of cooking, steam cannot pass between the space inside the pot and the outside of the pot to avoid the food being undercooked due to insufficient steam pressure. After cooking is completed, the steam pressure inside the pot needs to be released before the lid 2 can be opened. In addition, during the cooking process, when the exhaust valve is venting normally, the elastic pressing part 34 can be pressed manually to observe whether steam flows out from the pressure relief groove 22. When steam flows out from the pressure relief groove 22, it indicates that the cookware is working normally and the pressure inside the pot is normal. When no steam flows out from the pressure relief groove 22, it indicates that there is no pressure inside the cookware and the cookware is not working normally. That is, this application can also use the structure of the pressure relief groove 22 and the pressure relief valve 3 to verify whether cooking can proceed normally.

[0037] In this embodiment, the lid surface of the pot lid 2 is provided with a mounting cavity 23 for installing the pressure relief valve 3. The mounting cavity 23 is formed by an upward protrusion of a part of the lid surface of the pot lid 2 to form a cavity structure. A mounting hole 21 is provided at the top of the mounting cavity 23. The elastic pressure relief part 33 and the elastic pressing part 34 of the pressure relief valve 3 can both pass through the mounting hole 21 and be placed into the pot space. At the same time, a pressure relief groove 22 is provided at the top of the mounting cavity 23. The pot space is connected to the pressure relief groove 22 through the mounting cavity 23. The elastic sealing part 31 of the pressure relief valve 3 is installed at the cavity opening of the mounting cavity 23 and placed into the pot space, while the elastic mounting part 32 is located inside the cavity of the mounting cavity 23. Since the pressure relief groove 22 is connected to the mounting hole 21, and both the elastic pressure relief part 33 and the elastic pressing part 34 can undergo elastic deformation, when installing the pressure relief valve 3, by utilizing the design that the pressure relief groove 22 is connected to the mounting hole 21, when the elastic pressure relief part 33 and the elastic pressing part 34 are inserted into the mounting hole 21, the mounting hole 21 will be slightly enlarged so that the elastic pressure relief part 33 and the elastic pressing part 34 can pass through the mounting hole 21 and be installed sequentially on the outside of the mounting cavity 23. After the elastic pressure relief part 33 and the elastic pressing part 34 pass through the mounting hole 21, the mounting hole 21 returns to its original state, thereby causing the elastic sealing part 31 to press against the opening of the sealing mounting cavity 23.

[0038] Furthermore, in the sealed state, that is, the space inside the pot cannot communicate with the outside of the pot, the elastic sealing part 31 presses against the opening of the sealing installation cavity 23, which is equivalent to the elastic sealing part 31 sealing the installation hole 21 and the pressure relief groove 22, preventing the space outside the pot from communicating with the space inside the pot through the pressure relief groove 22, and preventing pressure leakage during cooking.

[0039] Furthermore, in the depressurized state, manually pressing the elastic pressing part 34 causes the elastic depressurization part 33 to be subjected to a downward force, simultaneously causing the elastic sealing part 31 to move downward. A gap is created between the elastic sealing part 31 and the opening of the mounting cavity 23. The steam pressure inside the pot enters the mounting cavity 23 along the gap and dissipates to the outside of the pot through the depressurization groove 22. At the same time, because the depressurization groove 22 is connected to the mounting hole 21, when the elastic depressurization part 33 is pressed down, it causes the depressurization groove 22 to deform, which expands the depressurization opening of the depressurization groove 22, thereby increasing the amount of steam flowing from inside the pot to the outside. Therefore, after cooking, the depressurization valve body structure of this application can effectively depressurize by means of the depressurization groove 22 and the depressurization valve 3. In addition, during the cooking process, the elastic pressing part 34 can be manually pressed to observe whether steam flows from inside the pot to the outside. When steam flows from inside the pot to the outside, it indicates that the cookware is working normally. When no steam flows from inside the pot to the outside, it indicates that the cookware is not working normally or that the exhaust valve is malfunctioning. That is, this application can also use the structure of the pressure relief groove 22 and the pressure relief valve 3 to verify whether cooking can proceed normally.

[0040] More preferably, the pressure relief groove 22 is connected to the mounting hole 21. If the elastic pressure relief part 33 covers the pressure relief groove 22, the pressure relief groove 22 cannot be opened during pressure relief, and even if it is opened, the pressure relief is insufficient. Therefore, regardless of whether the pressure relief valve 3 is in a sealed state or a pressure relief state, the elastic pressure relief part 33 can only cover the mounting hole 21 and cannot cover the pressure relief groove 22. At the same time, because the elastic pressure relief part 33 cannot cover the pressure relief groove 22, the elastic sealing part 31 and the cavity bottom of the mounting cavity 23 must be press-fitted to prevent air leakage in order to ensure the sealing effect.

[0041] On the other hand, due to the increase in steam pressure inside the boiler, an upward pressure is applied to the pressure relief valve 3. Therefore, when the pressure relief valve 3 is depressurized, the entire valve body will move slightly downward compared to the sealed state. Therefore, it is necessary to provide an elastic pressing part 34 to provide a certain amount of displacement.

[0042] In addition, this technical solution can achieve sealing and pressure relief without the need for springs, overcoming the defect that the spring force decreases after long-term use, causing the pressure cooker to become less airtight. This ensures that even after long-term use, the pressure relief valve 3 still has excellent sealing and pressure relief performance, thus giving the pressure cooker excellent sealing performance and ensuring the effectiveness and safety of use.

[0043] To further explain, the height of the elastic sealing part 31 is greater than the height of the mounting cavity 23.

[0044] By setting the above configuration, after sealing, the elastic sealing part 31 will be subjected to radial pressure from the mounting cavity 23, thereby producing a certain deformation, and the elastic sealing part 31 will fit tightly against the cavity wall of the mounting cavity 23, which is beneficial to enhancing the sealing effect.

[0045] To further explain, at least four pressure relief grooves 22 are provided, and the four pressure relief grooves 22 are evenly circumferentially connected to the outer edge of the mounting hole 21.

[0046] By setting at least four pressure relief tanks 22, it can be ensured that steam can be discharged through multiple pressure relief tanks 22 under high pressure, thereby dispersing the pressure and flow that a single pressure relief tank 22 may bear, and improving pressure relief efficiency and safety.

[0047] To further explain, the pressure relief groove 22 is rectangular in shape.

[0048] By limiting the shape of the pressure relief groove 22 to a rectangle, steam can be smoothly discharged along the pressure relief groove 22, avoiding the problem of poor discharge caused by the complex shape.

[0049] To further explain, the elastic sealing part 31, the elastic mounting part 32, the elastic pressure relief part 33, and the elastic pressing part 34 are integrally formed.

[0050] The elastic sealing part 31, elastic mounting part 32, elastic pressure relief part 33, and elastic pressing part 34 are integrally molded, eliminating the need for additional connecting parts or assembly processes between the components, thereby reducing performance problems caused by loose parts or improper assembly. Furthermore, since there are no seams or gaps between the components, better sealing is ensured, reducing the risk of air pressure leakage.

[0051] To further clarify, the pressure relief valve 3 is made of either rubber or silicone.

[0052] Because rubber and silicone have good elasticity and sealing properties, they can withstand certain pressure and temperature changes. Therefore, in this technical solution, the pressure relief valve 3 is preferably made of either rubber or silicone to ensure long-term effectiveness of the sealing effect.

[0053] To further explain, the cross-sectional shape of the mounting hole 21 and the cross-sectional shape of the elastic mounting part 32 are matched, and the mounting hole 21 and the elastic mounting part 32 are installed in a clearance fit manner.

[0054] Because the elastic mounting part 32 and the mounting hole 21 are installed with a clearance fit, the diameter of the cross-section of the mounting hole 21 in the width direction is larger than the diameter of the cross-section of the elastic mounting part 32 in the width direction. The larger mounting hole 21 provides enough space for the elastic mounting part 32 to move up and down, so that the elastic mounting part 32 can move more smoothly when pushed by steam pressure, thereby driving the elastic sealing part 31 to perform sealing and depressurization operations.

[0055] A cookware includes a lid 2 and a pot body 1, wherein the lid 2 is detachably mounted on the top of the pot body 1, and the lid 2 and the pot body 1 together form the inner space of the pot.

[0056] The lid 2 has an upward protrusion on its surface to form the mounting cavity 23. The bottom of the mounting cavity 23 is provided with a mounting hole 21 and a pressure relief groove 22. The mounting hole 21 is connected to the pressure relief groove 22. The mounting cavity 23 is equipped with the aforementioned pressure relief valve body structure.

[0057] This technical solution also proposes the application of a pressure relief valve body structure in cookware. The design of the pressure relief valve body structure can seal when the pressure inside the pot is low and release pressure when the pressure inside the pot is too high, thereby improving the safety of the cookware.

[0058] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0059] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0060] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0061] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0062] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0063] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0064] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A pressure relief valve body structure, characterized in that: Includes a pressure relief valve configured on the mounting cavity of the pot lid; The lid of the pot has an upward protrusion on its surface to form the mounting cavity. The bottom of the mounting cavity has a mounting hole and a pressure relief groove, and the mounting hole is connected to the pressure relief groove. The pressure relief valve includes an elastic sealing part, an elastic mounting part, an elastic pressure relief part, and an elastic pressing part connected sequentially from bottom to top. The elastic sealing part is elastically abutted against the opening of the mounting cavity and placed inside the pot space. The elastic mounting part is located inside the mounting cavity. The elastic pressure relief part and the elastic pressing part both penetrate the mounting hole and are sequentially installed on the outside of the mounting cavity. The pressure relief valve includes a sealed state and a pressure relief state: When the pressure relief valve is in a sealed state, the elastic sealing part presses against the opening of the mounting cavity to seal the space inside the pot from the mounting cavity. When the pressure relief valve is in the pressure relief state, the elastic pressing part can be pressed down to drive the elastic sealing part to form a pressure relief gap between the cavity of the mounting cavity and the cavity of the mounting cavity, so that the space inside the pot can be connected to the outside of the pot through the mounting cavity and the pressure relief groove.

2. The pressure relief valve body structure according to claim 1, characterized in that: The height of the elastic sealing part is greater than the height of the mounting cavity.

3. The pressure relief valve body structure according to claim 1, characterized in that: The number of pressure relief grooves is at least four, and the four pressure relief grooves are evenly circumferentially connected to the outer edge of the mounting hole.

4. The pressure relief valve body structure according to claim 1, characterized in that: The pressure relief groove is rectangular in shape.

5. The pressure relief valve body structure according to claim 1, characterized in that: The elastic sealing part, the elastic mounting part, the elastic pressure relief part, and the elastic pressing part are integrally formed.

6. The pressure relief valve body structure according to claim 1, characterized in that: The pressure relief valve is made of either rubber or silicone.

7. The pressure relief valve body structure according to claim 1, characterized in that: The cross-sectional shape of the mounting hole matches the cross-sectional shape of the elastic mounting part, and the mounting hole and the elastic mounting part are installed in a clearance fit manner.

8. A cookware, characterized in that: It includes a pot lid and a pot body, wherein the pot lid is detachably mounted on top of the pot body, and the pot lid and the pot body together enclose the interior space of the pot; The lid of the pot has an upward protrusion on its surface to form the mounting cavity. The bottom of the mounting cavity has a mounting hole and a pressure relief groove. The mounting hole communicates with the pressure relief groove. The mounting cavity is equipped with any one of the pressure relief valve body structures as described in claims 1-7.

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