Air escape valve and cookware using same

Abstract

The air release valve comprises a valve seat and a valve core, and is characterized in that the valve seat comprises an upper valve seat and a lower valve seat, an exhaust hole is formed in the upper valve seat, the lower valve seat is fixedly connected with a pot cover, the upper valve seat and the lower valve seat are detachably connected, a sealing ring and the valve core are located in the valve seat, and a balancing weight is arranged at the lower end of the valve core. The first sealing ring is fixed in the valve seat, a steam passing hole is formed in the first sealing ring, and the balancing weight can block or open the passing hole so as to achieve air closing or exhausting of the pot body. The air escape valve not only can exhaust air when the pot body is heated to enable the pressure in the pot body to reach a certain value, but also can seal the pot body when the pot body stops heating, so that the heat preservation time of the pot body is prolonged.

Description

Technical Field

[0001] This utility model relates to a venting valve, and more particularly to a venting valve installed on a pot lid and a pot using the same. Background Technology

[0002] The main reason for setting a vent valve on the pot lid is to balance the pressure inside and outside the pot, ensuring safety and optimizing cooking results.

[0003] In a tightly sealed pressure cooker, the internal steam pressure rises rapidly during heating. The pressure relief valve automatically releases some steam when the pressure exceeds a safe threshold, preventing the cooker from cracking or exploding due to excessive pressure. If steam cannot escape, forcibly opening the lid may result in a sudden outburst of hot steam or liquid; the pressure relief valve releases pressure in advance, reducing this risk.

[0004] However, other cookware besides pressure cookers uses sealing rings with good sealing properties, which allows high-pressure steam to be generated inside the pot. Therefore, a special venting valve is needed for these cookware, which has a simple structure and good venting and sealing effects. Utility Model Content

[0005] This utility model designs a venting valve and a cookware using it. The technical problem it solves is that there is a lack of a venting valve in the prior art that has a simple structure, good venting and sealing effect.

[0006] To solve the aforementioned technical problems, the present invention adopts the following solution:

[0007] A venting valve includes a valve seat and a valve core, characterized in that: the valve seat includes an upper valve seat and a lower valve seat, the upper valve seat is provided with a vent hole, the lower valve seat is fixedly connected to a pot lid, the upper valve seat and the lower valve seat can be detachably connected, a sealing ring and a valve core are located in the valve seat, a counterweight is provided at the lower end of the valve core, the sealing ring is fixed in the valve seat, the sealing ring is provided with a steam passage hole, and the counterweight can block or open the passage hole to realize the sealing or venting of the pot body.

[0008] Preferably, the counterweight is thicker at the top and thinner at the bottom, with the bottom of the counterweight being flat or curved. The corresponding passage hole also has the same shape as the counterweight, so as to better secure the counterweight and prevent air leakage.

[0009] Preferably, the counterweight has the same thick shape on both the top and bottom, and the bottom of the counterweight is a flat or curved surface. The corresponding passage hole also has the same shape as the counterweight, so as to better lock the counterweight and prevent air leakage.

[0010] Preferably, the counterweight is tapered at the top and thickened at the bottom, with the bottom of the counterweight being flat or curved. The corresponding passage hole also has the same shape as the counterweight, thus better securing the counterweight and preventing air leakage.

[0011] Preferably, the lower end of the sealing ring is limited by the limiting support platform, and the upper end of the sealing ring is limited by the limiting part at the lowest end of the upper valve seat.

[0012] Preferably, the upper valve seat is provided with a limiting guide, and the valve core can move back and forth in the limiting guide. The limiting guide is provided with a passage hole, and the upper end of the valve core is connected to a valve cap. The valve cap and the counterweight cannot pass through the passage hole, thereby ensuring that the valve core is always located in the passage hole.

[0013] Preferably, the upper valve seat and the lower valve seat are fixedly connected by threads.

[0014] Preferably, the lower end limiting portion of the upper valve seat has an external thread on its outer wall, and the upper end of the lower valve seat has an internal thread on its inner wall. Alternatively, the lower end limiting portion of the upper valve seat has an internal thread on its inner wall, and the upper end of the lower valve seat has an external thread on its outer wall.

[0015] Preferably, the lower valve seat has a thread at its lower end, and the lower end of the lower valve seat passes through the mounting hole on the pot lid. The upper end of the pot lid is limited by the sealing ring on the lower valve seat boss, and the lower end of the pot lid is limited by the nut.

[0016] A venting valve includes a valve seat and a valve core, characterized in that: the valve seat includes an upper valve seat and a lower valve seat, the upper valve seat is provided with a vent hole, the lower valve seat is fixedly connected to a pot lid, the upper valve seat and the lower valve seat are detachably connected, a limiting sealing platform and a valve core are located in the valve seat, a counterweight is provided at the lower end of the valve core, the limiting sealing platform is fixed in the valve seat, a steam passage hole is provided on the limiting sealing platform, and the counterweight and the limiting sealing platform form a sealing structure, thereby blocking or opening the steam passage hole to realize the sealing or venting of the pot body.

[0017] Preferably, the sealing structure between the counterweight and the limiting sealing platform is planar or concave-convex.

[0018] A cookware, comprising a pot body and a pot lid, characterized in that: the pot lid is equipped with the aforementioned vent valve.

[0019] Preferably, the pot lid is located between the upper valve seat and the lower valve seat.

[0020] The vent valve and the cookware using it have the following beneficial effects:

[0021] This utility model's vent valve not only releases air when the pressure inside the pot reaches a certain value due to heating, but also seals the pot when heating stops, extending the pot's heat preservation time. Attached Figure Description

[0022] Figure 1 : A schematic diagram of the appearance of the vent valve of this utility model;

[0023] Figure 2 : A schematic diagram of the vent valve of this utility model installed on the pot lid;

[0024] Figure 3 : First structural cross-sectional view of the vent valve of this utility model in the open state;

[0025] Figure 4 : First structural cross-sectional view of the vent valve of this utility model in the closed state;

[0026] Figure 5 : A schematic diagram of the structure of the counterweight block of this utility model;

[0027] Figure 6 : Schematic diagram of the connection structure between the upper and lower valve seats in this utility model;

[0028] Figure 7 : A second structural cross-sectional view of the vent valve of this utility model in the open state;

[0029] Figure 8 : A second structural cross-sectional view of the vent valve in the closed state of this utility model;

[0030] Figure 9 : A third structural cross-sectional view of the vent valve of this utility model in the open state;

[0031] Figure 10 : A third structural cross-sectional view of the vent valve of this utility model in the closed state.

[0032] Explanation of reference numerals in the attached figures:

[0033] 11—Upper valve seat; 111—Exhaust port; 112—Limiting guide; 113—External thread; 114—Limiting part; 12—Lower valve seat; 121—Second sealing ring; 122—Nut; 123—Limiting support platform; 124—Internal thread; 125—Limiting sealing platform; 21—Valve cap; 22—Valve core; 23—Counterweight; 24—First sealing ring; 241—Passage hole; 2—Pot lid. Detailed Implementation

[0034] The following is combined with Figures 1 to 10 The present invention will be further described below: Example

[0035] like Figure 1 As shown, a venting valve includes a valve seat and a valve core 22. The valve seat includes an upper valve seat 11 and a lower valve seat 12. The upper valve seat 11 is provided with a vent hole 111. The lower valve seat 12 is fixedly connected to the pot lid 2. The upper valve seat 11 and the lower valve seat 12 can be detachably connected. A first sealing ring 24 and the valve core 22 are located in the valve seat. A counterweight 23 is provided at the lower end of the valve core 22. The first sealing ring 24 is fixed in the valve seat. The first sealing ring 24 is provided with a steam passage hole 241. The counterweight 23 can block or open the passage hole 241 to realize the sealing or venting of the pot body.

[0036] like Figure 2As shown, a cookware includes a pot body and a pot lid 2, on which the aforementioned vent valve is installed. The lower valve seat 12 has a threaded lower end, which passes through a mounting hole on the pot lid 2. The upper end of the pot lid 2 is limited by a second sealing ring 121 on the protrusion of the lower valve seat 12, and the lower end of the pot lid 2 is limited by a nut 122.

[0037] like Figure 3 As shown, the lower end of the first sealing ring 24 is limited by the limiting support platform 123, and the upper end of the first sealing ring 24 is limited by the limiting part 114 at the lowermost end of the upper valve seat 11.

[0038] The upper valve seat 11 is provided with a limiting guide 112, and the valve core 22 can move back and forth in the limiting guide 112. The limiting guide 112 is provided with a passage hole, and the upper end of the valve core 22 is connected to the valve cap 21. The valve cap 21 and the counterweight 23 cannot pass through the passage hole, thereby ensuring that the valve core 22 is always located in the passage hole.

[0039] like Figure 3 and Figure 4 As shown, the first structure of the counterweight 23 is as follows: the counterweight 23 is thicker at the top and thinner at the bottom, and the bottom of the counterweight 23 is flat or curved. The passage hole 241 is also the same shape as the counterweight 23, so as to better lock the counterweight 23 and prevent air leakage. Figure 3 and Figure 4 In this design, the counterweight 23 is an inverted truncated cone with flat surfaces on both the top and bottom. When the counterweight 23 partially or completely leaves the passage hole 241 under the action of steam, steam is discharged from the boiler body; when the counterweight 23 blocks the passage hole 241 under negative pressure or its own weight, the boiler body is sealed off.

[0040] Because of the good sealing effect, if you want to open the pot lid 2, you need to manually pull up the valve cap 21 to break the seal between the counterweight 23 and the first sealing ring 24.

[0041] like Figure 5 As shown, the second structure of the counterweight 23 is as follows: the counterweight 23 has the same thick shape at the top and bottom, the bottom of the counterweight 23 is a flat or curved surface, and the corresponding passage hole 241 is also the same shape as the counterweight 23, so as to better lock the counterweight 23 and prevent air leakage. Figure 5 The counterweight 23 is either a cylinder or a sphere. The applicant believes that a sphere can be used as a special case where the counterweight 23 has the same thickness from top to bottom and the bottom of the counterweight 23 is curved. When the counterweight 23 partially or completely leaves the passage hole 241 under the action of steam, steam is discharged from the boiler; when the counterweight 23 blocks the passage hole 241 under negative pressure or its own weight, the boiler is sealed off.

[0042] The third structure of the counterweight 23 is as follows: the counterweight 23 is thinner at the top and thicker at the bottom. The bottom of the counterweight 23 is flat or curved. The passage hole 241 is also the same shape as the counterweight 23, so as to better lock the counterweight 23 and prevent air leakage.

[0043] The first structure of counterweight 23 is superior to the second and third structures, and has a better sealing effect.

[0044] like Figure 6 As shown, the upper valve seat 11 and the lower valve seat 12 are fixedly connected by threads. The lower end limiting part 114 of the upper valve seat 11 is provided with an external thread 113 on its outer wall, and the upper end of the lower valve seat 12 is provided with an internal thread 124 on its inner wall.

[0045] Alternatively, the inner wall of the lower limit portion 114 of the upper valve seat 11 may be provided with an internal thread, and the outer wall of the upper end of the lower valve seat 12 may be provided with an external thread.

[0046] The working principle of this vent valve is as follows: When the pot body is heated and generates high-pressure steam, when the steam pressure reaches a certain value, it will push the valve core 22 upward, separating the counterweight 23 from the first sealing ring 24. The high-pressure steam passes through the passage hole 241 of the first sealing ring 24 into the vent valve and leaves the vent valve through the vent hole 111. When the gas pressure inside the pot decreases, the first sealing ring 24 and the counterweight 23 descend under their own gravity, closing the passage hole 241 of the first sealing ring 24 again. When the pressure inside the pot increases, the above steps will be repeated.

[0047] When the pot stops heating, the steam inside the pot will generate negative pressure according to the principle of thermal expansion and contraction, which will exert a suction force on the counterweight 23 and fix it in the passage hole 241 of the first sealing ring 24, so that the two form a good sealing state.

[0048] In Embodiment 1, the first sealing ring 24 and the counterweight 23 cooperate to achieve a seal. At least one of them is elastic, and the other can be either elastic or rigid. At the same time, the limiting support platform 123 serves to limit the bottom of the first sealing ring 24.

[0049] Example 2: Figure 7 and Figure 8 As shown, the first sealing ring 24 and the counterweight 23 cooperate to achieve a seal. At least one of them is elastic, and the other can be either elastic or rigid. The limiting support platform 123 is not required; the upper valve seat 11 and the lower valve seat 12 can limit the first sealing ring 24.

[0050] Example 3: As Figure 9 and Figure 10As shown, there is no need to use a sealing ring; the counterweight 23 and the limiting sealing platform 125 are used directly for sealing. The limiting sealing platform 125 is an improvement on the original limiting support platform 123, which enables it to have a sealing function. The limiting sealing platform 125 is rigid, while the counterweight 23 can be either elastic or rigid.

[0051] The specific structure is as follows: A venting valve includes a valve seat and a valve core 22, characterized in that: the valve seat includes an upper valve seat 11 and a lower valve seat 12, the upper valve seat 11 is provided with a vent hole 111, the lower valve seat 12 is fixedly connected to the pot lid 2, the upper valve seat 11 and the lower valve seat 12 are detachably connected, the limiting sealing platform 125 and the valve core 22 are located in the valve seat, the lower end of the valve core 22 is provided with a counterweight 23, the limiting sealing platform 125 is fixed in the valve seat, the limiting sealing platform 125 is provided with a steam passage hole, the counterweight 23 and the limiting sealing platform 125 form a sealing structure, thereby blocking or opening the steam passage hole to realize the sealing or venting of the pot body.

[0052] The sealing structure between the counterweight 23 and the limiting sealing platform 125 is planar or concave-convex. The specific sealing structure between the counterweight 23 and the limiting sealing platform 125 can also be the same as the sealing structure between the counterweight 23 and the second sealing ring 121.

[0053] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the implementation of the present invention is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A deflation valve comprising a valve seat and a valve core (22), characterised in that: The valve seat comprises an upper valve seat (11) and a lower valve seat (12), the upper valve seat (11) is provided with an exhaust hole (111), the lower valve seat (12) is fixedly connected with the pot cover (2), the upper valve seat (11) and the lower valve seat (12) can be detachably connected, a first sealing ring (24) and a valve core (22) are located in the valve seat, the valve core (22) is provided with a counterweight (23) at the lower end, the first sealing ring (24) is fixed in the valve seat, the first sealing ring (24) is provided with a steam passing hole (241), and the counterweight (23) can block or open the passing hole (241) to realize the closing or exhausting of the pot body.

2. The air release valve of claim 1, wherein: The counterweight (23) is in the shape of thick at the top and thin at the bottom, the bottom of the counterweight (23) is a plane or an arc surface, and the passing hole (241) is also in the same shape as the counterweight (23) to better clamp the counterweight (23) and avoid air leakage. Alternatively, the counterweight (23) is in the shape of thick at the top and thin at the bottom, the bottom of the counterweight (23) is a plane or an arc surface, and the passing hole (241) is also in the same shape as the counterweight (23) to better clamp the counterweight (23) and avoid air leakage. Alternatively, the counterweight (23) is in the shape of thick at the top and thin at the bottom, the bottom of the counterweight (23) is a plane or an arc surface, and the passing hole (241) is also in the same shape as the counterweight (23) to better clamp the counterweight (23) and avoid air leakage.

3. A deflation valve according to claim 1 or 2, characterised in that: The lower end of the first sealing ring (24) is limited by a limiting support table (123), and the upper end of the first sealing ring (24) is limited by a limiting portion (114) at the lowermost end of the upper valve seat (11).

4. The air release valve of claim 3, wherein: A limiting guide (112) is arranged in the upper valve seat (11), the valve core (22) can move back and forth in the limiting guide (112), the limiting guide (112) is provided with a passing hole, the upper end of the valve core (22) is connected with a valve cap (21), and the valve cap (21) and the counterweight (23) cannot pass through the passing hole, thereby ensuring that the valve core (22) is always located in the passing hole.

5. The air release valve of claim 4, wherein: An outer thread (113) is arranged on the outer wall of the limiting portion (114) at the lower end of the upper valve seat (11), and an inner thread (124) is arranged on the inner wall of the upper end of the lower valve seat (12); or an inner thread is arranged on the inner wall of the limiting portion (114) at the lower end of the upper valve seat (11), and an outer thread is arranged on the outer wall of the upper end of the lower valve seat (12).

6. The air release valve of claim 5, wherein: A thread is arranged at the lower end of the lower valve seat (12), the lower end of the lower valve seat (12) passes through a mounting hole in the pot cover (2), the upper end of the pot cover (2) is limited by a second sealing ring (121) on the boss of the lower valve seat (12), and the lower end of the pot cover (2) is limited by a nut (122).

7. A deflation valve comprising a valve seat and a valve core (22), characterised in that: The valve seat comprises an upper valve seat (11) and a lower valve seat (12), the upper valve seat (11) is provided with an exhaust hole (111), the lower valve seat (12) is fixedly connected with the pot cover (2), the upper valve seat (11) and the lower valve seat (12) can be detachably connected, a limiting sealing platform (125) and a valve core (22) are located in the valve seat, the valve core (22) is provided with a counterweight (23) at the lower end, the limiting sealing platform (125) is fixed in the valve seat, the limiting sealing platform (125) is provided with a steam passing hole, the counterweight (23) and the limiting sealing platform (125) form a sealing structure so as to block or open the steam passing hole, thereby realizing the air closing or exhausting of the pot body.

8. The air release valve of claim 7, wherein: The sealing structure between the counterweight (23) and the limiting sealing platform (125) is in a planar shape or a concave-convex shape.

9. A cooker comprising a pot body and a pot cover (2), characterized in that: The pot cover (2) is provided with the air release valve according to any one of claims 1-8.

10. The pan of claim 9, wherein: The pot cover (2) is located between the upper valve seat (11) and the lower valve seat (12).

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