Novel pressure cooker air escape valve

Abstract

The utility model relates to a novel pressure cooker air release valve which comprises an air release valve seat, a pressure release rod and an air release valve cap installed at one end of the pressure release rod, an air inlet is formed in the bottom of the air release valve seat, a plurality of exhaust holes are formed in the side edge of the air release valve seat, a valve cavity is formed in the air release valve seat, the pressure release rod moves in the valve cavity, and an annular flange is arranged on the inner side wall of the air release valve seat. The outer surface of the pressure relief rod is provided with a sealing part, when the sealing part is located below the annular flange, the air escape valve is in a closed state, and when the sealing part is located above the annular flange, the air inlet hole is communicated with the exhaust hole. And the manufacturing cost is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of pressure control of pressure cookers, in particular to a novel air release valve for pressure cookers. Background Art

[0002] Pressure cookers are a popular tool for cooking food quickly. However, traditional pressure cookers are simple in design and lack safety features. To prevent the pressure inside the pressure cooker from constantly increasing and causing safety hazards, pressure cookers are equipped with a degassing valve.

[0003] Chinese utility model patent number CN96210825.1, titled "Pressure Cooker Pressure Relief Valve," discloses a pressure cooker pressure relief valve for use in a pressure cooker lid safety device. The valve comprises a valve seat and a valve core, with an air inlet and outlet openings and a sealing gasket. A round ball is positioned in the cavity between the air inlet and outlet openings. However, the patented product has a complex overall structure and high manufacturing costs. Utility Model Content

[0004] The utility model aims to provide a novel pressure cooker air release valve to solve the technical problems of the existing pressure cooker air release valve having a complex structure and high manufacturing cost.

[0005] To achieve the above-mentioned object, the present invention adopts the following technical solution: a novel pressure cooker gas relief valve, comprising a gas relief valve seat, a pressure relief rod, and a gas relief valve cap mounted on one end of the pressure relief rod. The gas relief valve seat has an air inlet hole at its bottom and a plurality of air exhaust holes at its side. The gas relief valve seat defines a valve cavity within which the pressure relief rod moves. The gas relief valve seat has an annular flange on its inner sidewall, and the pressure relief rod has a sealing portion on its outer surface. When the sealing portion is located below the annular flange, the gas relief valve is in a closed state. When the sealing portion is located above the annular flange, the gas inlet holes communicate with the air exhaust holes.

[0006] Furthermore, a cavity is formed in the air relief valve cap, and the air relief valve seat moves up and down in the cavity. When the air relief valve is in a closed state, the upper surface of the sealing portion and the lower surface of the annular flange abut against each other, and the air relief valve cap abuts against the exhaust hole to achieve sealing. When the pressure relief rod moves upward, the sealing portion moves relatively to the top of the annular flange, the air inlet hole and the exhaust hole form an air channel through the valve cavity, and the air relief valve cap and the exhaust hole are out of contact.

[0007] Furthermore, a limiting hole is formed inside the annular flange, the diameter of the limiting hole is larger than the diameter of the pressure relief rod, and the diameter of the sealing portion is larger than the diameter of the limiting hole.

[0008] Furthermore, the annular flange is integrally formed on the inner wall of the air relief valve seat.

[0009] Furthermore, the sealing portion protrudes and surrounds the outer surface of the pressure relief rod, and the sealing portion and the pressure relief rod are integrally formed.

[0010] Furthermore, the air relief valve seat is made of silicone rubber, and an outer surface of the air relief valve seat is provided with a groove corresponding to the air hole of the pot cover.

[0011] Furthermore, a threaded hole is provided on the air relief valve cap, and an external thread matching the threaded hole is provided on the upper end of the pressure relief rod. The pressure relief rod and the air relief valve cap are detachably connected by threaded mounting.

[0012] Through the above technical solution, the utility model has the following beneficial effects compared with the prior art: the structure realizes automatic one-button exhaust and pressure relief by using the relief valve seat, the pressure relief rod and the relief valve cap. Specifically, an annular flange is provided on the inner wall of the relief valve seat, and a sealing portion matching the annular flange is provided on the pressure relief rod. In a normal state, the sealing portion of the pressure relief rod is located below the annular flange and its upper surface abuts against the lower surface of the annular flange. At the same time, the relief valve cap removes the exhaust gas on the side of the relief valve seat. The hole is sealed and covered. When the pressure in the pot reaches 180kPa to 300kPa, the pressure relief rod rises upward due to the pressure, and simultaneously drives the relief valve cap fixed to the top of the pressure relief rod upward. When the sealing portion on the pressure relief rod moves above the annular flange, the relief valve cap also releases the cover on the exhaust hole, exposing it to the outside world. At this time, the air inlet hole below the relief valve seat and the side exhaust hole form an air channel through the valve cavity, and the gas is discharged to the outside world through this air channel, completing the exhaust and pressure reduction process. The above-mentioned relief valve structure not only has stable pressure relief, but also has a simple structure, is easy to assemble, and has a low manufacturing cost. It solves the technical problems of the complex structure and high manufacturing cost of existing pressure cooker relief valves. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0014] Figure 1 This is a schematic diagram of the closed state structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model in a closed state;

[0016] Figure 3 This is a schematic diagram of the structure of the utility model in the open state;

[0017] Figure 4This is a schematic cross-sectional view of the utility model in an open state;

[0018] Figure 5 It is an exploded view of the utility model;

[0019] Figure 6 This is a diagram of the utility model in use state when connected to a pot cover;

[0020] The utility model number information is as follows:

[0021] 1. Relief valve seat; 2. Pressure relief rod; 3. Relief valve cap; 4. Pot lid; 5. Relief valve body; 101. Air inlet; 102. Exhaust hole; 103. Valve cavity; 104. Annular flange; 105. Slot; 201. Sealing portion; 301. Cavity;

[0022] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0023] The following is a combination of the appended examples of the present invention Figure 1-6 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort shall fall within the scope of protection of the present invention.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] In addition, the descriptions of "first," "second," etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0026] like Figure 1-6FIG. 1 shows a novel pressure cooker gas relief valve, comprising a gas relief valve seat 1, a pressure relief rod 2, and a gas relief valve cap 3 mounted on one end of the pressure relief rod 2. The gas relief valve seat 1 has an air inlet 101 at its bottom and several air outlets 102 on its side. A valve cavity 103 is formed within the gas relief valve seat 1, and the pressure relief rod 2 moves within the valve cavity 103. The gas relief valve seat 1 has an annular flange 104 on its inner sidewall, and a sealing portion 201 is provided on the outer surface of the pressure relief rod 2. When the sealing portion 201 is below the annular flange 104, the gas relief valve is closed. When the sealing portion 201 is above the annular flange 104, the gas relief valve is in a closed state. The number of air outlets 102 can be one or more. In this embodiment, four air outlets 102 are provided. These air outlets 102 are evenly distributed, ensuring faster and more stable gas discharge.

[0027] like Figure 4 As shown: a cavity 301 is formed in the relief valve cap 3, and the relief valve seat 1 moves up and down in the cavity 301. Figure 1-2 As shown: when the air release valve is in a closed state, the upper surface of the sealing portion 201 and the lower surface of the annular flange 104 are in contact with each other, and the air release valve cap 3 is in contact with the exhaust hole 102 to achieve sealing, as shown in FIG. Figure 3-4 As shown, when the pressure relief rod 2 moves upward, the sealing portion 201 moves relatively to above the annular flange 104, the air inlet 101 and the exhaust hole 102 form an air passage through the valve cavity 103, and the relief valve cap 3 and the exhaust hole 102 are out of conflict.

[0028] This structure realizes automatic one-button exhaust and pressure relief by using the relief valve seat 1, the pressure relief rod 2 and the relief valve cap 3. Specifically, an annular flange 104 is provided on the inner wall of the relief valve seat 1, and a sealing portion 201 matching the annular flange 104 is provided on the pressure relief rod 2. In a normal state, the sealing portion 201 of the pressure relief rod 2 is located below the annular flange 104 and its upper surface abuts against the lower surface of the annular flange 104. At the same time, the relief valve cap 3 seals and covers the exhaust hole 102 on the side of the relief valve seat 1. When the pressure in the pot reaches 180 When the pressure is between 0.05 and 300 kPa, the pressure relief rod 2 rises upward due to the pressure, and simultaneously drives the relief valve cap 3 fixed to the top of the pressure relief rod 2 upward. When the sealing portion 201 on the pressure relief rod 2 moves above the annular flange 104, the relief valve cap 3 also releases the cover on the exhaust hole 102, exposing it to the outside world. At this time, the air inlet hole 101 below the relief valve seat 1 and the side exhaust hole 102 form an air channel through the valve cavity 103, and the gas is discharged to the outside world through this air channel, thereby completing the exhaust and pressure reduction process. The above-mentioned relief valve structure not only has stable pressure relief, but also has a simple structure, is easy to assemble, and has a low manufacturing cost, thus solving the technical problems of the complex structure and high manufacturing cost of the existing pressure cooker relief valve.

[0029] During use, when the air pressure in the pot has not reached the limit value, that is, 180kPa~300kPa, the air pressure in the pot is not enough to push the pressure relief rod 2 through the annular flange 104. The pressure relief rod 2 is limited in the air relief valve seat 1 by the cooperation of the annular flange 104 and the sealing portion 201. In addition, a pressure relief valve cap 3 is provided on the air relief valve seat 1, and the pressure relief valve cap 3 is connected to the top of the pressure relief rod 2, so that the sealing portion 201 of the pressure relief rod 2 will not fall off when it is below the annular flange 104. When the air pressure in the pot reaches the limit value, the pressure relief valve cap 3 will be lifted up, and a movable space will be generated between the inner top wall of the pressure relief valve cap 3 and the upper surface of the pressure relief valve seat 1. When the pressure relief rod 2 needs to be reset, it is only necessary to press the pressure relief valve cap 3 hard to press the sealing portion 201 of the pressure relief rod 2 down to below the annular flange 104. The structure is simple and the operation is convenient.

[0030] like Figure 2-4 As shown, a limiting hole is formed inside the annular flange 104. The diameter of the limiting hole is larger than the diameter of the pressure relief rod 2. This design creates a gas flow channel between the annular flange 104 and the main body of the pressure relief rod 2 when the sealing portion 201 of the pressure relief rod 2 is above the annular flange 104. The larger diameter of the sealing portion 201 than the limiting hole provides both limiting and sealing functions. The annular flange 104 is integrally formed on the inner wall of the pressure relief valve seat 1. This integrated design enhances the overall stability of the pressure relief valve seat 1.

[0031] like Figure 5 As shown: the sealing portion 201 protrudes and surrounds the outer surface of the pressure relief rod 2, and the sealing portion 201 and the pressure relief rod 2 are integrally formed. The sealing portion 201 is a ring or cone shape, which is mainly used to contact the annular flange 104 to achieve a sealing effect. At the same time, the integral molding method avoids the problem of damage after long-term activity.

[0032] The relief valve seat 1 is made of silicone rubber, the pressure relief rod 2 is made of aluminum alloy, and the outer surface of the relief valve seat 1 is provided with a card slot 105 corresponding to the air hole on the pot cover 4. The card slot 105 is clamped and fixed in the corresponding hole of the pot cover 4. Specifically, Figure 6 As shown: a pressure relief hole is opened on the pot cover 4, and the air relief valve body 5 is fixed in the pressure relief hole through a slot 105. The slot 105 is located between two convex strips arranged vertically, and the convex strip surrounds the outer surface of the air relief valve seat 1. The air relief valve seat 1 made of silicone rubber can cooperate more closely with the pressure relief rod 2 when in use, thereby increasing the sealing performance of the product. At the same time, the annular flange 104 in the air relief valve seat 1 is also made of soft silicone rubber. The annular flange 104 made of soft silicone rubber facilitates the up and down movement of the pressure relief rod 2. The flexible annular flange 104 facilitates the passage of the sealing portion 201 on the pressure relief rod 2 and is not easily damaged.

[0033] A threaded hole is provided on the relief valve cap 3, and an external thread matching the threaded hole is provided on the upper end of the pressure relief rod 2. The pressure relief rod 2 and the relief valve cap 3 are detachably connected by threaded installation. During assembly, the pressure relief rod 2 is passed through the bottom of the relief valve seat 1, and then the relief valve cap 3 is screwed onto the relief valve stem 2. The relief valve stem 2 and the relief valve cap 3 are fixedly connected by threads. This assembly method is quick, simple and strong.

[0034] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A novel pressure cooker air release valve, comprising an air release valve seat (1), a pressure release rod (2), and an air release valve cap (3) mounted on one end of the pressure release rod (2), wherein the air release valve seat (1) has an air inlet hole (101) at its bottom and a plurality of air exhaust holes (102) at its side, and a valve cavity (103) is formed inside the air release valve seat (1), and is characterized in that: The pressure relief rod (2) moves in the valve cavity (103), and an annular flange (104) is provided on the inner side wall of the air relief valve seat (1). A sealing portion (201) is provided on the outer surface of the pressure relief rod (2). When the sealing portion (201) is located below the annular flange (104), the air relief valve is in a closed state. When the sealing portion (201) is located above the annular flange (104), the air inlet (101) is communicated with the air outlet (102).

2. The novel pressure cooker air release valve according to claim 1, characterized in that: A cavity (301) is formed in the air relief valve cap (3), and the air relief valve seat (1) moves up and down in the cavity (301). When the air relief valve is in a closed state, the upper surface of the sealing portion (201) and the lower surface of the annular flange (104) are in contact with each other, and the air relief valve cap (3) abuts against the exhaust hole (102) to achieve sealing. When the pressure relief rod (2) moves upward, the sealing portion (201) moves relatively to the top of the annular flange (104), and the air inlet hole (101) and the exhaust hole (102) form an air passage through the valve cavity (103), and the air relief valve cap (3) and the exhaust hole (102) are out of contact.

3. The novel pressure cooker air release valve according to claim 2, characterized in that: A limiting hole is formed inside the annular flange (104), the diameter of the limiting hole is larger than the diameter of the pressure relief rod (2), and the diameter of the sealing portion (201) is larger than the diameter of the limiting hole.

4. The novel pressure cooker air release valve according to claim 1, characterized in that: The annular flange (104) is integrally formed on the inner wall of the air relief valve seat (1).

5. The novel pressure cooker air release valve according to claim 1, characterized in that: The sealing portion (201) protrudes and surrounds the outer surface of the pressure relief rod (2), and the sealing portion (201) and the pressure relief rod (2) are integrally formed.

6. A novel pressure cooker air release valve according to any one of claims 1 to 5, characterized in that: The air release valve seat (1) is made of silicone rubber, and an outer surface of the air release valve seat (1) is provided with a clamping groove (105) corresponding to the air hole of the pot cover.

7. The novel pressure cooker air release valve according to claim 6, characterized in that: A threaded hole is provided on the air relief valve cap (3), and an external thread matching the threaded hole is provided on the upper end of the pressure relief rod (2). The pressure relief rod (2) and the air relief valve cap (3) are detachably connected by threaded mounting.

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