A pressure cooker lid and electric pressure cooker

Abstract

The present application relates to the field of pressure cooker, especially a pressure cooker cover and a pressure cooker. A pressure cooker cover, comprising a cover body, an exhaust valve and a float valve are installed on the cover body, the exhaust valve has airtight position and exhaust position, the exhaust valve can be switched from the airtight position to the exhaust position by rotating a certain angle clockwise or counterclockwise in the exhaust valve mounting hole; a linkage is arranged in the mounting cavity, under normal pressure, the float valve falls to drive the linkage to move a certain distance, and the linkage drives the exhaust valve to rotate to the airtight position; under high pressure, the float valve rises to drive the linkage to move a certain distance, and the linkage is disconnected with the exhaust valve. The benefits of the pressure cooker cover include, under normal pressure, it can prevent the user from forgetting to reset the exhaust valve and cause dry burning; under high pressure, it has the benefit of flexible control.

Description

Technical Field

[0001] This invention relates to the field of pressure cookers, and in particular to a pressure cooker lid and an electric pressure cooker. Background Technology

[0002] There are two types of pressure cooker lids: those that require an electric power source and those that are purely mechanical. Electric lids typically use a solenoid valve as the vent, automatically controlling the release of gas. However, because both the lid and the pot itself require power, the lid and pot cannot be separated, and the lid's circuitry must be connected to the pot, making cleaning inconvenient. Mechanical lids, on the other hand, can be detached from the pot, making cleaning much easier.

[0003] To address the issue of pressure cookers drying out, patent application CN108201333A discloses a safe electric rice cooker. In this cooker, a liquid level sensor measures the amount of food in the working chamber. The sensor detects the liquid level and controls the opening and closing of the solenoid valve, making it less likely for the cooker to dry out during use.

[0004] In mechanical pressure cooker lids, the vent valve can be manually adjusted to the vent position and can remain there to continuously release steam. If, during the initial stages of cooking, the vent valve is left in the vent position without the user's knowledge, steam will continue to escape from the vent valve during the cooking process, causing the food inside the pressure cooker to dry-cook.

[0005] To address the issue of pressure cookers drying out due to mechanical lids, Chinese patent CN113133647B proposes a lid and cooking device comprising: a pressure regulating valve device; a lid opening and closing linkage mechanism; and a lid assembly. When the lid assembly opens, it activates the lid opening and closing linkage mechanism, which in turn activates the pressure regulating valve device, resetting its position to its initial position. The pressure regulating valve device includes: a pressure regulating valve with multiple positions, one of which is the initial position; and a linkage element adapted to lock the pressure regulating valve's position. When the lid assembly opens, it activates the lid opening and closing linkage mechanism, which in turn activates the linkage element, releasing the locking of the pressure regulating valve's position. When the lid assembly opens, a stop acts on the stop structure and drives the linkage element to move, releasing the locking of the pressure regulating valve's position.

[0006] The problem with existing technology is that for mechanical pressure cooker lids, whether the pressure regulating valve is locked depends on whether the lid is closed or open. This means that when the lid is closed, the user cannot use the pressure regulating valve to release gas. At the end of cooking, the pressure cooker needs to be cooled down to condense steam and reduce the internal pressure, or some gas needs to be released through the vent valve to reduce the pressure. In existing technology, the user cannot accelerate the cooling process of the pressure cooker in the later stages of cooking by releasing gas, thus losing the flexibility of pressure control inherent in pressure cookers with mechanical lids. Summary of the Invention

[0007] To solve the above-mentioned technical problems, the purpose of this invention is to: provide a pressure cooker lid, which is a mechanical pressure cooker lid, capable of preventing dry burning, and allowing the user to manually control the exhaust valve to release air, making it flexible and convenient to use; and to provide an electric pressure cooker equipped with the above-mentioned pressure cooker lid.

[0008] The technical solution adopted by this invention to solve the problem is:

[0009] A pressure cooker lid includes a lid body, on which an exhaust valve and a float valve are mounted. The float valve is vertically movably connected to the lid body. The lid body has an exhaust valve mounting hole, in which the exhaust valve is located. The exhaust valve has an airtight position and an exhaust position. The exhaust valve can switch from the airtight position to the exhaust position by rotating clockwise or counterclockwise within the exhaust valve mounting hole. The lid body includes an inner body and an outer body, with a mounting cavity formed between the inner and outer bodies. A linkage is disposed in the mounting cavity, and the linkage is kinetically connected to the float valve. Under normal pressure, the float valve is located at the lower part of the lid body. When the float valve falls, it drives the linkage to move a certain distance, and the linkage drives the exhaust valve to rotate to the airtight position. Under high pressure, the float valve is located at the upper part of the lid body. When the float valve rises, it drives the linkage to move a certain distance, and the linkage is disengaged from the exhaust valve.

[0010] As a further improvement to the above technical solution, a frame is provided in the mounting cavity, and the linkage is slidably connected to the frame; the float valve has a conical surface, and the linkage has an inclined surface, with the conical surface and the inclined surface slidably connected via a keyway structure. Because it is slidably connected to the float valve via the keyway structure, the lower end of the linkage can remain stable, and the frame supports the middle part of the linkage, preventing the linkage from shifting.

[0011] As an optional technical solution, the mounting cavity is provided with a frame, and the linkage is slidably connected to the frame. The frame also has a limiting part to restrict the sliding distance of the linkage. The end of the linkage near the float valve is inclined downwards. The float valve has a first magnet, and the linkage has a second magnet that repels the first magnet. When the float valve falls, the float valve magnetically pushes the linkage towards the exhaust valve. The frame prevents the linkage from shifting and limits its stroke, preventing it from detaching from the frame. Using magnetic force to control the relative position of the float valve and the linkage results in a simple and reliable structure.

[0012] As a further improvement to the above technical solution, the exhaust valve is provided with a boss. When the exhaust valve is in the exhaust position and the float valve is located at the lower part of the pot lid body, one end of the linkage abuts against the boss and pushes the boss to rotate the exhaust valve to the sealing position. The cooperation between the boss and the linkage ensures that the linkage can push the exhaust valve to rotate after moving towards the exhaust valve.

[0013] As a further improvement to the above technical solution, the exhaust valve includes a valve seat, a valve core, and a valve cover. The valve core is fixedly connected to the pot lid body, and the valve cover is disposed in the valve seat. The side wall of the valve seat has a first notch with an upward opening, and the bottom end of the first notch has a second notch with an upward opening. The valve cover has a valve cover support arm. When the valve cover support arm is located in the second notch, the exhaust valve is in the sealed position. When the exhaust valve mounting hole is located in the first notch, the exhaust valve is in the exhaust position. The valve seat has a baffle, and the valve cover has a limiting plate. The limiting plate is located below the baffle, and the baffle is used to limit the height of the limiting plate so that the height of the exhaust valve mounting hole is not higher than the height of the top of the first notch. The valve seat has a clearance opening, and the linkage extends into the clearance opening. The valve cover support arm can only switch positions between the first and second notches. Therefore, as long as those skilled in the art set the linkage in a reasonable position, it can be ensured that when the valve cover is in the exhaust position, the linkage can be driven by the falling float valve to push the boss.

[0014] As a further improvement to the above technical solution, a piston is fixedly provided on the valve cover, and a vent hole is provided on the valve core. When the exhaust valve is in the sealed position, the piston is located at the upper end of the vent hole and blocks the vent hole.

[0015] The present invention also provides an electric pressure cooker, including the pressure cooker lid and the pressure cooker body, wherein the pressure cooker lid and the pressure cooker body are detachably connected.

[0016] The beneficial effects of this invention are:

[0017] Under normal pressure, the float valve is located at the bottom of the pot lid body. When the float valve falls, it drives the linkage to move a certain distance, and the linkage drives the exhaust valve to rotate to the airtight position. Therefore, before cooking, the exhaust valve is in the airtight position, which can prevent the user from forgetting to reset the exhaust valve and causing dry burning.

[0018] Under high pressure, the float valve is located on the upper part of the lid body. When the float valve rises, it drives the linkage to move a certain distance, and the linkage disengages from the exhaust valve. Therefore, in the later stages of cooking, the user can manually control the exhaust valve to rotate to the exhaust position, speeding up the cooking process. The pressure cooker lid of this invention offers the advantage of flexible control. Attached Figure Description

[0019] The present invention will be further explained and described below with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a top view of one embodiment of the pressure cooker lid of the present invention;

[0021] Figure 2 This is a cross-sectional view of one embodiment of the pressure cooker lid of the present invention;

[0022] Figure 3 for Figure 2 Enlarged view of part A;

[0023] Figure 4 This is a cross-sectional view of the exhaust valve of the pressure cooker lid of the present invention.

[0024] Figure 5 This is a side view of the valve seat of the pressure cooker lid of the present invention;

[0025] Figure 6 This is a top view of the linkage component of an embodiment of the pressure cooker lid of the present invention;

[0026] Figure 7 This is a side view of the frame of an embodiment of the pressure cooker lid of the present invention;

[0027] Figure 8 This is a cross-sectional view of another embodiment of the pressure cooker lid of the present invention;

[0028] Figure 9 for Figure 8 Enlarged view of part B;

[0029] Figure 10 This is a side view of the linkage component of another embodiment of the pressure cooker lid of the present invention.

[0030] In the diagram: 1-Lid body, 11-Inner body, 12-Outer body, 13-Mounting cavity, 14-Exhaust valve mounting hole, 15-Float valve mounting hole, 2-Exhaust valve, 21-Valve seat, 211-Allowing opening, 212-First notch, 213-Second notch, 214-Baffle, 22-Valve core, 221-Ventilation hole, 23-Valve cover, 231-Boss, 232-Limiting plate, 233-Valve cover support arm, 24-Piston, 3-Float valve, 31-Conical surface, 4-Linkage component, 41-Sloping surface, 5-Frame, 51-Limiting part, 6-First magnet, 7-Second magnet, 8-Pressure pot body. Detailed Implementation

[0031] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0032] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and 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. Therefore, they should not be construed as limiting this invention.

[0033] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0035] Reference Figures 1 to 7 One embodiment of a pressure cooker lid includes:

[0036] A pressure cooker lid includes a lid body 1, on which an exhaust valve 2 and a float valve 3 are mounted. The float valve 3 is vertically movably connected to the lid body 1. The lid body 1 has an exhaust valve mounting hole 14, in which the exhaust valve 2 is located. The exhaust valve 2 has an airtight position and an exhaust position. The exhaust valve 2 can switch from the airtight position to the exhaust position by rotating clockwise or counterclockwise a certain angle within the exhaust valve mounting hole 14. The lid body 1 includes an inner body 11 and an outer body 12, with a mounting cavity 13 formed between the inner body 11 and the outer body 12. A linkage 4 is disposed in the mounting cavity 13, and the linkage 4 is operatively connected to the float valve 3. Under normal pressure, the float valve 3 is located at the lower part of the lid body 1. When the float valve 3 falls, it drives the linkage 4 to move a certain distance, and the linkage 4 drives the exhaust valve 2 to rotate to the airtight position. Figure 2 Under high pressure, the float valve 3 is located on the upper part of the pot lid body 1. When the float valve 3 rises, it drives the linkage 4 to move a certain distance, and the linkage 4 is disengaged from the exhaust valve 2.

[0037] Reference Figure 3 The mounting cavity 13 contains a frame 5, and the linkage 4 is slidably connected to the frame 5; the float valve 3 has a conical surface 31, and the linkage 4 has an inclined surface 41, with the conical surface 31 and the inclined surface 41 slidably connected by a keyway structure. (Refer to...) Figure 6 The inclined surface 41 has raised key structures on both sides.

[0038] Reference Figure 2 and Figure 4 The exhaust valve 2 is provided with a boss 231. When the exhaust valve 2 is in the exhaust position and the float valve 3 is located at the lower part of the pot lid body 1, one end of the linkage 4 abuts against the boss 231 and pushes the boss 231 to rotate the exhaust valve 2 to the sealing position. Specifically, mutually compatible inclined surfaces can be provided on the boss 231 and the linkage 4 to realize the transmission between the boss 231 and the linkage 4.

[0039] Reference Figure 4 The exhaust valve 2 includes a valve seat 21, a valve core 22, and a valve cover 23. The valve core 22 is fixedly connected to the pot lid body 1. The valve cover 23 is disposed in the valve seat 21. The side wall of the valve seat 21 has a first notch 212 opening upwards, and one end of the bottom of the first notch 212 has a second notch 213 opening upwards. The valve cover 23 is provided with a valve cover support arm 233. (Refer to...) Figure 2When the valve cover support arm 233 is located in the second notch 213, the exhaust valve 2 is in the sealed position. At this time, the valve cover 23 can be manually rotated to the exhaust position. When the exhaust valve mounting hole 233 is located in the first notch 212, the exhaust valve 2 is in the exhaust position. The valve seat 21 is provided with a baffle 214, and the valve cover 23 is provided with a limiting plate 232. The limiting plate 232 is located below the baffle 214. The baffle 214 is used to limit the height of the limiting plate 232 so that the height of the exhaust valve mounting hole 233 is not higher than the height of the top of the first notch 212, thereby limiting the angle of the valve cover 23. The valve seat 21 is provided with a clearance opening 211, and the linkage 4 extends into the clearance opening 211.

[0040] A piston 24 is fixedly provided on the valve cover 23, and a vent hole 221 is provided on the valve core 22. When the exhaust valve 22 is in the sealed position, the piston 24 is located at the upper end of the vent hole 221 and blocks the vent hole 221.

[0041] Reference Figures 8 to 10 Another embodiment of a pressure cooker lid includes:

[0042] The mounting cavity 13 contains a frame 5, and the linkage 4 is slidably connected to the frame 5. The frame 5 contains a limiting part 51, which limits the sliding distance of the linkage 4. Specifically, the linkage 4 has a groove, and the frame 5 has a key as the limiting part 51. The end of the linkage 4 near the float valve 3 is inclined downwards. The float valve 3 has a first magnet 6, and the linkage 4 has a second magnet 7 that repels the first magnet 6. When the float valve 3 falls, the float valve 3 magnetically pushes the linkage 4 towards the exhaust valve 2. Figure 8 When the float valve 3 is falling, the linkage 4 is subjected to magnetic force and moves obliquely upward to abut against the boss 231 on the valve cover 23, pushing the valve cover 23 to rotate, so that the valve cover support arm 233 rotates from the first notch 212 to the second notch 213, thereby switching the exhaust valve 2 from the exhaust position to the sealing position.

[0043] The present invention also provides an electric pressure cooker, including the pressure cooker lid and the pressure cooker body, wherein the pressure cooker lid and the pressure cooker body are detachably connected.

[0044] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct or indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A pressure cooker lid, comprising a lid body (1), wherein an exhaust valve (2) and a float valve (3) are installed on the lid body (1), the float valve (3) is movably connected to the lid body (1) vertically, the lid body (1) is provided with an exhaust valve mounting hole (14), the exhaust valve (2) is disposed in the exhaust valve mounting hole (14), the exhaust valve (2) has an airtight position and an exhaust position, and the exhaust valve (2) can switch from the airtight position to the exhaust position by rotating clockwise or counterclockwise at a certain angle in the exhaust valve mounting hole (14); Its features are: The pot lid body (1) includes an inner body (11) and an outer body (12), and an installation cavity (13) is formed between the inner body (11) and the outer body (12). A linkage (4) is provided in the mounting cavity (13), and the linkage (4) is connected to the float valve (3) in a transmission manner; Under normal pressure, the float valve (3) is located at the lower part of the pot lid body (1). When the float valve (3) falls, it drives the linkage (4) to move a certain distance, and the linkage (4) drives the exhaust valve (2) to rotate to the airtight position. Under high pressure, the float valve (3) is located on the upper part of the pot lid body (1). When the float valve (3) rises, it drives the linkage (4) to move a certain distance, and the linkage (4) is disconnected from the exhaust valve (2).

2. A pressure cooker lid as described in claim 1, characterized in that: The mounting cavity (13) is provided with a frame (5), and the linkage (4) is slidably connected to the frame (5); The float valve (3) is provided with a conical surface (31), and the linkage (4) is provided with an inclined surface (41). The conical surface (31) and the inclined surface (41) are slidably connected by a keyway structure.

3. A pressure cooker lid as described in claim 1, characterized in that: The mounting cavity (13) is provided with a frame (5), the linkage (4) is slidably connected to the frame (5), and the frame (5) is provided with a limiting part (51), which is used to limit the sliding distance of the linkage (4); The linkage (4) is inclined downward at one end near the float valve (3). The float valve (3) is provided with a first magnet (6), and the linkage (4) is provided with a second magnet (7) that repels the first magnet (6). When the float valve (3) falls, the float valve (3) pushes the linkage (4) to move towards the exhaust valve (2) by magnetic force.

4. A pressure cooker lid as described in claim 2 or 3, characterized in that: The exhaust valve (2) is provided with a boss (231). When the exhaust valve (2) is in the exhaust position and the float valve (3) is located at the lower part of the pot lid body (1), one end of the linkage (4) abuts against the boss (231) and pushes the boss (231) to push the exhaust valve (2) to rotate to the sealing position.

5. A pressure cooker lid as described in claim 4, characterized in that: The exhaust valve (2) includes a valve seat (21), a valve core (22), and a valve cover (23). The valve core (22) is fixedly connected to the pot lid body (1). The valve cover (23) is located in the valve seat (21). The side wall of the valve seat (21) is provided with a first notch (212) opening upwards. One end of the bottom of the first notch (212) is provided with a second notch (213) opening upwards. The valve cover (23) is provided with a valve cover support arm (233). When the valve cover support arm (233) is located in the second notch (213), the exhaust valve (2) is in the sealed position. When the valve cover support arm (233) is located in the first notch (212), the exhaust valve (2) is in the exhaust position. The valve seat (21) is provided with a baffle (214), and the valve cover (23) is provided with a limiting plate (232). The limiting plate (232) is located below the baffle (214). The baffle (214) is used to limit the height of the limiting plate (232) so that the height of the valve cover support arm (233) is not higher than the height of the top of the first notch (212). The valve seat (21) is provided with a clearance opening (211), and the linkage (4) extends into the clearance opening (211).

6. A pressure cooker lid as described in claim 5, characterized in that: A piston (24) is fixedly provided on the valve cover (23), and a vent hole (221) is provided on the valve core (22). When the exhaust valve (2) is in the sealed position, the piston (24) is located at the upper end of the vent hole (221) and blocks the vent hole (221).

7. An electric pressure cooker, characterized in that: The pressure cooker includes a pressure cooker lid as described in any one of claims 1-6, and also includes a pressure cooker body, wherein the pressure cooker lid and the pressure cooker body are detachably connected.

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