A lid assembly and an electric pressure cooker having the same.

Abstract

This invention discloses a lid assembly and an electric pressure cooker having the same. The lid includes a top cover with a pressure-limiting structure. A protective structure is mounted on top of the pressure-limiting structure, and the protective structure is connected to the top cover. The protective structure has a limiting structure, and the top cover has a float. The float floats upward and cooperates with the limiting structure to prevent the protective structure from detaching from the top cover. The float rises under pressure and resets after the pressure is released. The limiting structure on the protective structure cooperates with the float. When there is pressure in the pot, the float rises, preventing normal disassembly of the protective structure and restricting its detachment from the top cover, thus protecting the pressure-limiting structure from easy access. When there is no pressure in the pot, the float resets, and the protective structure can be disassembled and reassembled normally without restriction. The limiting structure of the protective structure, in cooperation with the float, prevents disassembly of the protective structure under pressure, protecting the user and preventing spills or burns caused by the user touching the pressure-limiting structure under pressure.

Description

Technical Field

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

[0002] Once the pressure cooker is pressurized, high-temperature, high-pressure steam is present inside. If the user accidentally touches the pressure-limiting structure to release the steam, or if a child or other person without the ability to distinguish between right and wrong touches the pressure-limiting structure, the high-temperature, high-pressure steam will burst out instantly, potentially causing burns. The pressure-limiting structure of existing electric pressure cookers is generally exposed, and it is possible to touch the pressure-limiting structure when there is pressure inside the pot, posing a risk of use.

[0003] Chinese utility model patent CN201734501U, entitled "Safety Device for Electric Pressure Cooking Appliances," discloses a device including a weighted safety valve mounted on a pot lid and connected to the pot body. The device also includes a protective cover over the weighted safety valve, with a vent on the cover, which is connected to the pot lid. By placing a protective cover with a vent above the weighted safety valve and connecting it to the pot lid, the normal operation of the weighted safety valve is not hindered, while preventing accidental burns from sudden bursts of high-temperature steam when the user touches the weight of the valve. This makes the electric pressure cooking appliance relatively safe.

[0004] Although the aforementioned patent provides a protective cover for the pressure-limiting structure, the cover can be removed under pressure. During the removal process, the cover may come into contact with the pressure-limiting structure, and the user may also be able to access the pressure-limiting structure after the cover is removed. Therefore, the problem of not being able to access the pressure-limiting structure under pressure has not been completely solved. Summary of the Invention

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a lid assembly and an electric pressure cooker having the same, aiming to solve the problem of how to prevent users from touching the pressure limiting structure and causing overflow or scalding accidents when the electric pressure cooker is under pressure.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a cover assembly, including an upper cover, wherein a pressure limiting structure is installed on the upper cover, a protective structure is provided on the upper cover of the pressure limiting structure, the protective structure is connected to the upper cover, the protective structure is provided with a limiting structure, and the upper cover is provided with a float, which floats upward and cooperates with the limiting structure to prevent the protective structure from detaching from the upper cover.

[0007] As a further improvement of the present invention: the protective structure and the top cover are rotatably connected, and the float and the limiting structure cooperate to restrict the rotation of the protective structure.

[0008] As a further improvement of the present invention: the limiting structure is a limiting rib, and the limiting rib is fixed inside the protective structure.

[0009] As a further improvement of the present invention: the upper cover is provided with a float limiting block, the float includes a floating part, a first limiting part is provided above the floating part, a second limiting part is provided below the floating part, and the floating part is installed on the float limiting block.

[0010] As a further improvement of the present invention: an automatic exhaust structure is provided below the pressure limiting structure. The automatic exhaust structure rises upward and lifts the pressure limiting structure. The protective structure is provided with a pressure-blocking structure, which is used to prevent the automatic exhaust structure from rising upward.

[0011] As a further improvement of the present invention: the upper cover is provided with a limiting groove, and the automatic exhaust structure includes a lifting part, which is slidably disposed in the limiting groove.

[0012] As a further improvement of the present invention, the automatic exhaust structure further includes a reset spring, which is installed between the lifting part and the upper cover.

[0013] As a further improvement of the present invention: the upper cover is provided with an exhaust mechanism, which is connected to the pressure limiting structure.

[0014] As a further improvement of the present invention: the exhaust mechanism is a manual exhaust mechanism, which includes a button, a lever and a lever rotation shaft. The lever is rotatably connected to the upper cover through the lever rotation shaft. One end of the lever rests on the bottom of the button, and the other end of the lever rests on the bottom of the pressure limiting structure.

[0015] As a further improvement of the present invention: the upper cover is provided with a buckle, and the protective structure is provided with a groove that cooperates with the buckle.

[0016] As a further improvement of the present invention: the upper cover is provided with a connecting part that cooperates with the protective structure, and the connecting part is connected to the protective structure; the buckle is provided on the inner wall of the connecting part, and the protective structure is detachably connected to the connecting part by cooperating with the buckle through the slot; the pressure limiting structure, the float and the automatic exhaust structure are located inside the connecting part.

[0017] As a further improvement of the present invention: the protective structure is provided with a vent hole; the vent hole is located at the top of the protective structure. Because the protective structure has a vent hole, when the button is pressed to open the pressure-limiting structure to achieve venting, the vented gas can be smoothly discharged through the vent hole of the protective structure, ensuring the smooth operation of the venting process.

[0018] As a further improvement of the present invention: at least two buckles are evenly distributed on the inner wall of the connecting part, and the protective structure is provided with at least two slots, wherein the at least two slots of the protective structure respectively cooperate with at least two buckles of the connecting part.

[0019] As a further improvement of the present invention: the inner wall of the connecting part is evenly provided with three buckles, and the protective structure is provided with three slots, the three slots of the protective structure respectively cooperating with the three buckles of the connecting part.

[0020] As a further improvement of the present invention: the pressure limiting structure is a pressure limiting valve, and the protective structure is a protective cover.

[0021] The present invention provides an electric pressure cooker with a lid assembly, including a lid assembly.

[0022] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention incorporates a limiting structure on the protective structure that works in conjunction with a float. When pressure is present in the pot, the float rises, preventing normal disassembly of the protective structure and restricting its separation from the electric pressure cooker body. This protects the pressure-limiting structure from easy access. When there is no pressure in the pot, the float returns to its original position, allowing the protective structure to be disassembled and reassembled without restriction. The limiting structure and float work together to prevent disassembly of the protective structure under pressure, thus protecting the user from spills or burns caused by the user touching the pressure-limiting structure when the electric pressure cooker is under pressure.

[0023] 2. This invention features an automatic venting structure below the pressure-limiting structure. Without the protective structure installed, the automatic venting structure, under pressure, acts on the pressure-limiting structure, pushing it open and preventing air leakage, thus hindering the pressure cooker's normal operation. Only when the protective structure is installed does its pressure-retaining structure press against the automatic venting structure, resetting the pressure-limiting structure and allowing the pressure cooker to operate normally. This automatic venting structure ensures that the pressure cooker can only operate normally when the protective structure is installed, preventing potential user risks from touching the pressure-limiting structure if the protective structure is missing.

[0024] 3. By incorporating an exhaust mechanism, this invention ensures that the pressure-limiting structure can exhaust under the protection of the protective structure, thus meeting the user's need for rapid pressure relief. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention.

[0026] Figure 2 This is a schematic diagram of the internal structure of the present invention.

[0027] Figure 3This is a schematic diagram of the structure of the present invention without the protective structure installed.

[0028] Figure 4 for Figure 3 A magnified view of the local structure at point A in the diagram.

[0029] Figure 5 This is a schematic diagram of the installation and protection structure of the present invention.

[0030] Figure 6 This is a schematic diagram of the automatic exhaust structure and the pressure-resistant structure of the present invention.

[0031] Figure 7 Figure 6 A magnified schematic diagram of the local structure at point B.

[0032] Figure 8 This is a schematic diagram of the automatic exhaust structure of the present invention when the protective structure is not installed.

[0033] Figure 9 for Figure 8 A magnified schematic diagram of the local structure at point C.

[0034] Figure 10 This is a schematic diagram of the manual exhaust mechanism of the present invention.

[0035] Figure 11 for Figure 10 A magnified schematic diagram of the local structure at point D.

[0036] Figure 12 This is a schematic diagram of the protective structure of the present invention.

[0037] Figure 13 This is a schematic diagram of the structure of the top cover of the present invention.

[0038] Reference numerals: 1. Top cover; 2. Pressure limiting structure; 3. Protective structure; 4. Limiting structure; 5. Float; 6. Float limiting block; 7. Floating part; 8. First limiting part; 9. Second limiting part; 10. Automatic exhaust structure; 11. Pressing structure; 12. Limiting groove; 13. Lifting part; 14. Return spring; 15. Exhaust mechanism; 16. Button; 17. Lever; 18. Lever rotation shaft; 19. Vent hole; 20. Buckle; 21. Slot; 22. Connecting part. Detailed Implementation

[0039] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. The invention is now further described in conjunction with the accompanying drawings and embodiments: like Figure 2-5 As shown, an embodiment of the present invention provides a cover assembly including an upper cover 1, wherein the upper cover 1 is fitted with a pressure limiting structure 2, and a protective structure 3 is provided above the pressure limiting structure 2. The protective structure 3 is connected to the upper cover 1, and the protective structure 3 is provided with a limiting structure 4. The upper cover 1 is provided with a float 5, which floats upward and cooperates with the limiting structure 4 to prevent the protective structure 3 from detaching from the upper cover.

[0040] In the above example, a protective structure 3 is provided on the pressure limiting structure 2 for protection. At the same time, the upper cover 1 is provided with a float 5. The float 5 rises under pressure and resets after the pressure is released. A limit structure 4 is provided on the protective structure 3 to cooperate with the float 5. When there is pressure in the pot, the float 5 rises, preventing the protective structure 3 from being disassembled normally and restricting the separation of the protective structure 3 from the upper cover, thereby protecting the pressure limiting structure 2 from being easily touched. When there is no pressure in the pot, the float 5 resets, and the protective structure 3 can be disassembled and installed normally without restriction.

[0041] In a specific application example, the protective structure 3 and the upper cover 1 are rotatably connected. The float can float upwards and cooperates with the limiting structure to restrict the rotation of the protective structure. The protective structure 3 and the upper cover 1 are connected and separated through rotational movement. The limiting structure 4 is a limiting rib, which is fixed inside the protective structure 3.

[0042] In the above example, when there is pressure inside the pot, the float 5 rises and abuts against the limiting rib on the protective structure 3, preventing the protective structure 3 from rotating and being disassembled, thus restricting the separation of the protective structure 3 from the top cover 1, thereby protecting the pressure limiting structure 2 from being easily touched; when there is no pressure inside the pot, the float 5 falls back to its original position, and the protective structure 3 can be disassembled and installed normally without restriction.

[0043] like Figure 4 As shown, the upper cover 1 is provided with a float limiting block 6, the float 5 includes a floating part 7, a first limiting part 8 is provided above the floating part 7, a second limiting part 9 is provided below the floating part 7, and the floating part 7 is installed on the float limiting block 6.

[0044] The floating part 7 of the float 5 can float up and down the float limiting block 6, and is limited by the first limiting part 8 and the second limiting part 9 to prevent the float 5 from leaving the float limiting block 6, thereby preventing the float 5 from leaving the upper cover 1.

[0045] In another example, an automatic exhaust structure 10 is provided below the pressure limiting structure 2. The automatic exhaust structure 10 rises up and lifts the pressure limiting structure 2. The protective structure 3 is provided with a pressure-blocking structure 11, which is used to prevent the automatic exhaust structure 10 from rising up.

[0046] like Figure 9 As shown, an automatic venting structure 10 is provided below the pressure-limiting structure 2. Without the protective structure 3 installed, the automatic venting structure 10, under pressure, can act on the pressure-limiting structure 2, pushing it open and preventing air leakage, thus hindering the normal pressure-pressurizing operation of the electric pressure cooker. Figure 7 As shown, only when the protective structure 3 is installed will the pressure-blocking structure 11 of the protective structure 3 press against the automatic venting structure 10, causing the pressure-limiting structure 2 to reset, and the electric pressure cooker will then operate normally and apply pressure. By providing the automatic venting structure 10, it is ensured that the electric pressure cooker can only apply pressure normally when the protective structure 3 is installed, preventing the electric pressure cooker from operating without the protective structure 3, which could lead to the user touching the pressure-limiting structure 2 and causing a usage risk.

[0047] In a specific application example, the abutting structure is an abutting rib, which is fixed inside the protective structure 3.

[0048] like Figure 9 As shown, the upper cover 1 is provided with a limiting groove 12, and the automatic exhaust structure 10 includes a lifting part 13, which is slidably disposed in the limiting groove 12.

[0049] When the electric pressure cooker is missing the protective structure 3, the lifting part 13 rises under pressure, thereby opening the pressure limiting structure. This prevents the pressure limiting structure 2 from leaking air and thus prevents the electric pressure cooker from operating without the protective structure 3, thereby avoiding the user touching the pressure limiting structure 2 and causing a risk of use.

[0050] like Figure 9 As shown, the automatic venting structure 10 also includes a return spring 14, which is installed between the lifting part 13 and the upper cover 1. By providing the return spring 14, the lifting part 13 can be raised under pressure, and the lifting part 13 can be ensured to return to its original position after the pressure is released.

[0051] In another example, the upper cover 1 is provided with an exhaust mechanism 15, which is connected to the pressure limiting structure 2. By providing the exhaust mechanism 15, it is possible to ensure that the pressure limiting structure 2 can be vented under the protection of the protective structure 3.

[0052] In a specific application example, such as Figure 10 and Figure 11 As shown, the exhaust mechanism 15 is a manual exhaust mechanism 15. The manual exhaust mechanism includes a button 16, a lever 17 and a lever rotation shaft 18. The lever 17 is rotatably connected to the upper cover 1 through the lever rotation shaft 18. One end of the lever 17 rests on the button 16 and the other end of the lever 17 rests on the pressure limiting structure 2.

[0053] In the example above, such as Figure 11 As shown, pressing button 16 causes lever 17 to rotate around lever axis 18, which opens pressure-limiting structure 2 and allows for venting. The manual venting mechanism 15 ensures venting of pressure-limiting structure 2 under the protection of protective structure 3, meeting the user's need for rapid pressure relief.

[0054] It should be noted that the exhaust mechanism 15 can also be an electrically operated exhaust structure. By setting an electrically operated exhaust structure, it can be ensured that the pressure limiting structure 2 can be exhausted under the protection of the protective structure 3.

[0055] like Figure 12 As shown, the protective structure 3 is provided with a ventilation hole 19. The ventilation hole 19 is located at the top of the protective structure 3.

[0056] The protective structure 3 is provided with a vent hole 19. When the button 16 is pressed to open the pressure limiting structure 2 to achieve exhaust, the exhaust gas can be smoothly discharged from the vent hole 19 of the protective structure 3, ensuring the smooth operation of the exhaust work.

[0057] In a specific application example, the upper cover 1 is provided with a buckle 20, and the protective structure 3 is provided with a slot 21 that cooperates with the buckle 20.

[0058] like Figure 12 and Figure 13 As shown, the protective structure 3 is detachably connected to the upper cover 1 by engaging the slot 21 and the buckle 20.

[0059] like Figure 13 As shown, the upper cover 1 is provided with a connecting part 22 that cooperates with the protective structure 3, and the connecting part 22 is connected to the protective structure 3; the buckle 20 is provided on the inner wall of the connecting part 22, and the protective structure 3 cooperates with the buckle 20 through the slot 21 to achieve a detachable connection with the connecting part 22. The pressure limiting structure, float 5 and automatic exhaust structure 10 are located inside the connecting part 22.

[0060] In another example, the inner wall of the connecting part 22 is evenly provided with at least two buckles 20, and the protective structure 3 is provided with at least two slots 21.

[0061] At least two slots 21 of the protective structure 3 respectively engage with at least two buckles 20 of the connecting part 22.

[0062] In a specific application example, the inner wall of the connecting part 22 is evenly provided with three buckles 20, and the protective structure 3 is provided with three slots 21. The three slots 21 of the protective structure 3 respectively cooperate with the three buckles 20 of the connecting part 22.

[0063] In another example, the pressure-limiting structure is a pressure-limiting valve, and the protective structure is a protective cover.

[0064] Another embodiment of the present invention also provides an electric pressure cooker with a lid assembly, including an upper lid 1, wherein a pressure limiting structure 2 is installed on the upper lid 1, a protective structure 3 is provided above the pressure limiting structure 2, the protective structure 3 is connected to the upper lid 1, the protective structure 3 is provided with a limiting structure 4, and the upper lid 1 is provided with a float 5, which can float upward and cooperate with the limiting structure 4 to limit the rotation of the protective structure 3.

[0065] The electric pressure cooker is equipped with a float 5. The float 5 rises under pressure and resets after the pressure is released. When there is pressure inside the cooker, the float 5 rises and blocks the limiting structure 4 on the protective structure 3, preventing the protective structure 3 from rotating and being disassembled. This restricts the separation of the protective structure 3 from the pressure cooker lid 1, thus protecting the pressure-limiting structure 2 from easy access. When there is no pressure inside the cooker, the float 5 descends and resets, allowing the protective structure 3 to be disassembled and reassembled normally without restriction. The limiting structure 4 of the protective structure 3, in conjunction with the float 5, prevents the protective structure 3 from being disassembled under pressure, protecting the user and preventing spills or burns caused by the user touching the pressure-limiting structure 2 under pressure.

[0066] For ease of understanding, the overall structure of the present invention will be described below, and its working principle will be explained.

[0067] To ensure the safety of the electric pressure cooker, a protective structure 3 is installed on the pressure limiting structure 2, such as... Figure 1 As shown, the protective structure 3 is assembled with the upper lid 1 of the electric pressure cooker. The electric pressure cooker is also equipped with a float 5, which is configured to rise under pressure and return to its original position after the pressure is released. Figure 3 and Figure 4 As shown; the protective structure 3 is equipped with a limiting structure 4 that cooperates with the float 5. When there is pressure inside the pot, the float 5 rises, preventing the protective structure 3 from separating from the electric pressure cooker lid 1. The protective structure 3 and the lid 1 are each equipped with a rotating engagement structure, allowing for connection and separation through rotational movement. Figure 5After the float 5 rises, it blocks the limiting structure 4 on the protective structure 3. The protective structure 3 cannot be rotated for disassembly, thus protecting the pressure limiting structure 2 from being easily touched. When there is no pressure in the pot, the float 5 resets, and the protective structure 3 can be disassembled and installed normally without restriction. Furthermore, an automatic venting structure 10 is provided below the pressure-limiting structure 2. Without the protective structure 3 installed, the automatic venting structure 10 floats upwards onto the pressure-limiting structure 2, causing it to leak and malfunction, preventing the electric pressure cooker from pressing up pressure. Only when the protective structure 3 is installed does its pressure-blocking structure 11 press against the automatic venting structure 10, allowing the pressure-limiting structure 2 to reset and the electric pressure cooker to press up pressure normally. Figures 6-9 This ensures that the electric pressure cooker can only be pressurized normally when the protective structure 3 is installed, preventing it from working if the protective structure 3 is missing and avoiding the risk of users touching the pressure limiting structure 2. Furthermore, the electric pressure cooker is equipped with a venting mechanism 15, which can ensure venting under the protection of the protective structure 3. The venting mechanism 15 is not limited to manual or electric venting. The attached figure shows a manual venting embodiment, which meets the user's need for rapid pressure relief.

[0068] The main functions of this invention are: This invention utilizes a limiting structure on the protective structure that works in conjunction with a float. When pressure is present in the pot, the float rises, preventing normal disassembly of the protective structure and limiting its separation from the electric pressure cooker body. This protects the pressure-limiting structure from easy access. When the pressure is depressurized, the float returns to its original position, allowing the protective structure to be disassembled and reassembled without restriction. The limiting structure and float work together to prevent disassembly of the protective structure under pressure, thus protecting the user from spills or burns caused by the user touching the pressure-limiting structure when the electric pressure cooker is pressurized.

[0069] In the description of this invention, it should be understood that the terms "upper end face", "lower end face", "top", "bottom", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention. Therefore, they should not be construed as limiting the actual direction of use of this invention.

[0070] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A cover assembly, comprising an upper cover, characterized in that: The upper cover is equipped with a pressure limiting structure, and a protective structure is provided on the upper cover of the pressure limiting structure. The protective structure is connected to the upper cover and has a limiting structure. The upper cover is equipped with a float, which floats upward and cooperates with the limiting structure to prevent the protective structure from detaching from the upper cover.

2. A cover assembly according to claim 1, characterized in that: The protective structure is rotatably connected to the top cover, and the float and the limiting structure work together to restrict the rotation of the protective structure.

3. A cover assembly according to claim 1, characterized in that: The upper cover is provided with a float limiting block. The float includes a floating part, a first limiting part is provided above the floating part, and a second limiting part is provided below the floating part. The floating part is installed on the float limiting block.

4. A cover assembly according to claim 1, characterized in that: An automatic venting structure is provided below the pressure limiting structure. The automatic venting structure rises up and lifts the pressure limiting structure. The protective structure is provided with a pressure-blocking structure to prevent the automatic venting structure from rising up.

5. A cover assembly according to claim 4, characterized in that: The upper cover is provided with a limiting groove, and the automatic exhaust structure includes a lifting part, which is slidably disposed in the limiting groove.

6. A cover assembly according to claim 5, characterized in that: The automatic exhaust structure also includes a return spring, which is installed between the lifting part and the upper cover.

7. A cover assembly according to claim 1, characterized in that: The upper cover is equipped with an exhaust mechanism, which is connected to the pressure limiting structure.

8. A cover assembly according to claim 7, characterized in that: The exhaust mechanism is a manual exhaust mechanism, which includes a button, a lever, and a lever rotation shaft. The lever is rotatably connected to the upper cover through the lever rotation shaft. One end of the lever rests on the bottom of the button, and the other end of the lever rests on the bottom of the pressure limiting structure.

9. A cover assembly according to claim 1, characterized in that: The top cover is provided with a buckle, and the protective structure is provided with a slot that cooperates with the buckle.

10. A cover assembly according to claim 9, characterized in that: The upper cover is provided with a connecting part that cooperates with the protective structure, and the connecting part is connected to the protective structure; the buckle is provided on the inner wall of the connecting part, and the protective structure is detachably connected to the connecting part by cooperating with the buckle through the slot; the pressure limiting structure, float and automatic exhaust structure are located inside the connecting part.

11. A cover assembly according to claim 1, characterized in that: The protective structure is provided with ventilation holes; the ventilation holes are located at the top of the protective structure.

12. A cover assembly according to claim 1, characterized in that: The pressure limiting structure is a pressure limiting valve, and the protective structure is a protective cover.

13. An electric pressure cooker with a lid assembly, characterized in that: Includes a cover assembly as described in any one of claims 1-12.

Images