A pot cover and electric pressure cooker

Abstract

The utility model discloses a kind of pot cover and electric pressure cooker, pot cover includes: cover body, pressure-limiting valve and float valve are arranged on the cover body, the installation through-hole position on cover body is equipped with pressureless valve assembly, the pressureless valve assembly includes valve seat, valve core and pressure spring that set on valve core are movably matched with valve seat upper and lower, gas outlet passage is provided in the valve core, lower end side is provided with air inlet hole, the total area of the air inlet hole is at least 6mm 2 , and less than the area of gas outlet passage horizontal section, the lower end of the pressure spring and the step surface in valve seat abut, the upper end and the lug on the valve core abut, to drive sealing ring connected with the lower end of valve core and valve seat bottom sealing abut, cover body is provided with the drive assembly that can drive the lower valve core to make the air inlet hole expose in cover body. Using the above technical scheme, high-pressure cooking can be carried out, and pressureless cooking can also be carried out, to ensure better cooking use effect.

Description

Technical Field

[0001] This utility model relates to the technical field of cookware, and in particular to a pot lid and an electric pressure cooker. Background Technology

[0002] Currently, household liquid heating cooking appliances include rice cookers, electric pressure cookers, and electric steamers, which can be broadly categorized into those with and without cooking pressure. Existing electric pressure cookers generally consist of a lid and a pot body. The lid typically has a pressure limiting valve and a float valve. These types of electric pressure cookers can generally only perform high-pressure cooking. If the valve head is removed for cooking, overflow will occur (because the pressure release is small, and there is slight pressure inside the pot). Therefore, designing a lid and electric pressure cooker that can achieve pressureless cooking without overflowing has become an urgent technical problem to be solved. Utility Model Content

[0003] In order to overcome the existing technical defects, the purpose of this utility model is to provide a pot lid and an electric pressure cooker to solve the above-mentioned technical problems.

[0004] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0005] According to one aspect of this utility model, a pot lid is designed, comprising: a lid body, wherein a pressure limiting valve and a float valve are provided on the lid body, and a pressure-free valve assembly is installed at a mounting through hole on the lid body. The pressure-free valve assembly includes a valve seat, a valve core that moves vertically and vertically with the valve seat, and a compression spring sleeved on the valve core. The valve core has an air outlet channel and an air inlet hole on its lower side, the total area of ​​the air inlet hole being at least 6 mm². 2 And smaller than the area of ​​the horizontal cross section of the air outlet channel, the lower end of the compression spring abuts against the stepped surface inside the valve seat, and the upper end abuts against the protrusion on the valve core, so as to drive the sealing ring connected to the lower end of the valve core to seal against the bottom of the valve seat. The cover is provided with a drive assembly that can drive the valve core to move down so that the air inlet is exposed inside the cover.

[0006] Using the above technical solution, when the lid and pot body are fitted together, the sealing ring at the lower end of the valve core seals against the bottom of the valve seat. At this time, the pot is a conventional electric pressure cooker, capable of high-pressure cooking. When the valve core is driven downward by the drive assembly, the air inlet at the lower end of the valve core is exposed inside the lid. In this way, the inside of the pot is connected to the outside through the air inlet and outlet, enabling pressureless cooking, such as porridge or rice. The total area of ​​the air inlet is controlled to be at least 6mm. 2 Furthermore, the area is smaller than the horizontal cross-sectional area of ​​the air outlet channel, ensuring a large exhaust volume and smooth airflow during cooking. This prevents the pot from overflowing due to slight pressure inside, thus ensuring better cooking results.

[0007] To better address the aforementioned technical deficiencies, this utility model also offers a superior technical solution:

[0008] In some embodiments, the lid contains a rotatable rocker arm and a drive mechanism for resetting the rocker arm. A magnet is connected to the lower end of the rocker arm. When the drive mechanism moves the valve core downwards, it simultaneously drives the rocker arm to rotate, moving the magnet from a first position to a second position. After the drive mechanism resets, the drive mechanism resets the rocker arm. When the lid is placed on the pot, the rotation of the rocker arm moves the magnet from the first position to the second position. At this time, the magnet corresponds vertically to a magnetic induction switch inside the pot. The magnetic induction switch senses the magnetic force of the magnetic block and triggers feedback information to the control circuit board inside the pot, which then shuts off the high-pressure cooking mode.

[0009] In some embodiments, the sealing ring has a Y-shaped cross-section, is a silicone or silicone rubber sealing ring, and is fitted into the annular groove at the lower end of the valve core.

[0010] In some embodiments, the cover includes an outer cover and an inner cover, the through hole on the outer cover corresponds to the through hole on the inner cover and forms the mounting through hole, the valve seat is fixed in the through hole on the inner cover, and the upper end of the valve core can be placed into the through hole on the outer cover after the valve core moves upward.

[0011] In some embodiments, the drive assembly includes a drive rod that slides laterally within the cover body and a drive key located at the top of the cover body and connected to the right end of the drive rod. The drive rod has a strip-shaped through hole at its left end and an inclined surface at its bottom. The valve core is placed inside the strip-shaped through hole. The protrusion is circular and located below the drive rod. The left end of the drive rod corresponds to the drive inclined surface on the swing arm. When the drive key is pushed to the left, the drive rod moves to the left. The inclined surface abuts against the protrusion, which drives the valve core to move downward, so that the air inlet is exposed inside the cover body. At the same time, the left end of the drive rod abuts against the drive inclined surface, which drives the swing arm to rotate and move the magnet from the first position to the second position.

[0012] In some embodiments, the upper end of the swing arm is rotatably engaged with a column inside the cover, and the driving component is a torsion spring, which is sleeved on the column. The upper end of the torsion spring is connected to the swing arm, and the lower end abuts against a baffle on one side of the column.

[0013] According to another aspect of this utility model, an electric pressure cooker is designed, including a pot body and the aforementioned lid. The pot body is provided with a control circuit board and a magnetic induction switch electrically connected to the control circuit board. When the lid is placed on the pot body, the swing rod inside the lid rotates, causing the magnet to move from a first position to a second position. The magnetic induction switch corresponds to the magnet and is triggered. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of a pot lid according to one embodiment of this utility model;

[0015] Figure 2 A structural schematic diagram of the pot lid from another perspective;

[0016] Figure 3 Schematic diagram of the cross-sectional structure of the pot lid Figure 1 The valve core was not driven to move downward;

[0017] Figure 4 Schematic diagram of the cross-sectional structure of the pot lid Figure 2 The valve core is driven to move downward;

[0018] Figure 5 This is a schematic diagram of the exploded structure of a pressureless valve assembly.

[0019] Figure 6 This is a structural diagram of the inner cover and drive assembly;

[0020] Figure 7 Top view of the inner cover and drive assembly Figure 1 The valve core was not driven to move downward;

[0021] Figure 8 Top view of the inner cover and drive assembly Figure 2 The valve core is driven to move downward;

[0022] Figure 9 This is a structural diagram of the outer cover and the drive rod;

[0023] Figure label:

[0024] 1. Cover; 11. Outer cover; 111. Limiting plate; 12. Inner cover; 13. Column; 14. Baffle; 2. Pressure relief valve; 3. Float valve; 4. Pressureless valve assembly; 41. Valve seat; 411. Stepped surface; 42. Valve core; 421. Air outlet channel; 422. Air inlet; 423. Annular groove; 424. Protrusion; 43. Compression spring; 44. Sealing ring; 5. Drive assembly; 51. Drive rod; 511. Strip-shaped through hole; 512. Inclined surface; 52. Drive key; 6. Rocker arm; 61. Magnet; 62. Drive inclined surface; 7. Drive component. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 limitations on this utility model.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as setting, installing, connecting, and fixing should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] Example 1

[0029] refer to Figures 1 to 9 As shown, the present invention provides a pot lid, comprising: a lid body 1, on which a pressure limiting valve 2 and a float valve 3 are provided; a pressure-free valve assembly 4 is installed at the mounting through hole position on the lid body 1; the pressure-free valve assembly 4 includes a valve seat 41, a valve core 42 that moves vertically with the valve seat 41, and a compression spring 43 sleeved on the valve core 42; an air outlet channel 421 is provided inside the valve core 42; and one, two, three, four or more air inlets 422 are provided on the lower side of the valve core 42, the total area of ​​the air inlets 422 being 6mm². 2 or 7mm 2 or 8mm 2 or 9mm 2 or 10mm 2 or 11mm 2 or 12mm 2 or 13mm 2 Wait, the total area of ​​the air inlet 422 is smaller than the area of ​​the horizontal cross section of the air outlet channel 421. In this embodiment, four air inlets 422 are preferably distributed around the lower end of the valve core 42. The total area of ​​the air inlets 422 refers to the sum of the areas of all the air inlets 422. A sealing ring 44 is fitted inside the annular groove 423 at the lower end of the valve core 42. The sealing ring 44 is a silicone or silicone rubber sealing ring with a Y-shaped cross section. The lower end of the compression spring 43 abuts against the stepped surface 411 inside the valve seat 41, and the upper end of the compression spring 43 abuts against the protrusion 424 on the valve core 42. The elastic force of the compression spring 43 can drive the sealing ring 44 at the lower end of the valve core 42 to seal against the bottom of the valve seat 41.

[0030] The cover 1 includes an outer cover 11 and an inner cover 12. The outer cover 11 and the inner cover 12 are snapped together or fixed by screws. The through hole on the outer cover 11 corresponds to the through hole on the inner cover 12 and forms the mounting through hole. The valve seat 41 is fixed in the through hole on the inner cover 12. After the valve core 42 moves up, its upper end can be placed in the through hole on the outer cover 11.

[0031] The cover 1 is provided with a drive assembly 5 that can drive the valve core 42 to move down so that the air inlet 422 is exposed inside the cover 1. The drive assembly 5 includes a drive rod 51 that is laterally slidably engaged in the cover 1 and a drive key 52 located at the top of the cover 1 and connected to the right end of the drive rod 51. When the drive key 52 is pushed to move left and right, the drive key 52 drives the drive rod 51 to move left and right. The inner side of the outer cover 11 is provided with a plurality of limiting plates 111 located on both sides of the drive rod 51. The lower part of the limiting plate 111 is provided with a limiting block that supports the bottom of the drive rod 51. The left end of the drive rod 51 is slidably engaged with the transverse groove at the top of the inner cover 12. The limiting plate 111, the limiting block and the transverse groove ensure that the drive rod 51 moves smoothly laterally.

[0032] The left end of the drive rod 51 is provided with a transverse strip-shaped through hole 511, and the bottom of the left end of the drive rod 51 is provided with an inclined surface 512. The upper part of the valve core 42 is placed in the strip-shaped through hole 511, and the protrusion 424 on the valve core 42 is a circular structure and is located below the drive rod 51.

[0033] The cover 1 contains a rotatable rocker arm 6 and a drive component 7 for resetting the rocker arm 6. A magnet 61 is connected to the lower end of the rocker arm 6. Furthermore, the upper end of the rocker arm 6 is rotatably engaged with a column 13 inside the cover 1. The drive component 7 is a torsion spring, sleeved on the column 13. The upper end of the torsion spring is connected to the rocker arm 6, and the lower end of the torsion spring abuts against a baffle 14 on one side of the column 13. The left end of the drive rod 51 corresponds to the drive ramp 62 located on the right side of the upper end of the rocker arm 6.

[0034] When the drive key 52 is pushed to the left, the drive rod 51 moves to the left. The inclined surface 512 abuts against the protrusion 424, which drives the valve core 42 to move down, so that the air inlet 422 is exposed inside the cover 1. At the same time, the left end of the drive rod 51 abuts against the drive inclined surface 62 on the swing rod 6, so that the swing rod 6 rotates and drives the magnet 61 to move from the first position to the second position. When the drive key 52 drives the drive rod 51 to move to the left position, the inclined surface 512 no longer abuts against the protrusion 424. At this time, the bottom protrusion 424 on the right side of the inclined surface 512 on the drive rod 51... 24. The top surface contacts (abuts) and the driving inclined surface 62 on the rocker arm 6 abuts against the front side of the arc-shaped surface set at the left end of the driving rod 51. The inside of the cover 1 is connected to the outside through the air inlet 422 and the air outlet 421. When the driving key 52 is pushed to the right, the driving rod 51 is moved to the right and reset. Under the elastic force of the compression spring 43, the valve core 42 is driven to move upward and reset, so as to drive the sealing ring 44 to seal against the bottom of the valve seat 41. The driving component 7 drives the rocker arm 6 to rotate and reset. The rocker arm 6 drives the magnet 61 to move from the second position to the first position.

[0035] Example 2

[0036] refer to Figures 1 to 9As shown, this utility model provides an electric pressure cooker, including a pot body and a lid 1 as in Embodiment 1. A control circuit board and a magnetic induction switch electrically connected to the control circuit board are installed inside the pot body. The magnetic induction switch is located in the upper part of the pot body, and a function button electrically connected to the control circuit board is installed on the outer wall of the pot body. When the lid 1 is placed on the pot body, pushing the drive button 52 to the left rotates the swing rod 6 inside the lid 1. The rotation of the swing rod 6 moves the magnet 61 from the first position to the second position. The magnetic induction switch corresponds vertically with the magnet 61. The magnetic induction switch senses the magnetic force of the magnet and triggers feedback information to the control circuit board. The control circuit board then closes the high-pressure cooking mode, allowing only pressureless cooking. When the drive button 52 is pushed to the right to reset, the drive component 7 drives the swing rod 6 to rotate and reset. The swing rod 6 moves the magnet 61 from the second position to the first position. At this time, the magnetic induction switch cannot sense the magnetic force of the magnet, and the control circuit board opens the high-pressure cooking mode. High-pressure cooking can be selected via the function button.

[0037] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A pot lid, characterized in that, The system includes: a cover, on which a pressure limiting valve and a float valve are installed; a pressure-free valve assembly is installed at a mounting through hole on the cover; the pressure-free valve assembly includes a valve seat, a valve core that moves vertically with the valve seat, and a compression spring sleeved on the valve core; the valve core has an air outlet channel and an air inlet hole on its lower side; the total area of ​​the air inlet hole is at least 6 mm². 2 And smaller than the area of ​​the horizontal cross section of the air outlet channel, the lower end of the compression spring abuts against the stepped surface inside the valve seat, and the upper end abuts against the protrusion on the valve core, so as to drive the sealing ring connected to the lower end of the valve core to seal against the bottom of the valve seat. The cover is provided with a drive assembly that can drive the valve core to move down so that the air inlet is exposed inside the cover.

2. A pot lid according to claim 1, characterized in that, The cover body is rotatably fitted with a rocker arm and a drive component that drives the rocker arm to reset. The lower end of the rocker arm is connected to a magnet. When the drive component drives the valve core to move down, it also drives the rocker arm to rotate and moves the magnet from the first position to the second position. When the drive component resets, the drive component drives the rocker arm to reset.

3. A pot lid according to claim 1 or 2, characterized in that, The sealing ring has a Y-shaped cross-section and is made of silicone or silicone rubber. It is fitted into the annular groove at the lower end of the valve core.

4. A pot lid according to claim 1, characterized in that, The cover includes an outer cover and an inner cover. The through hole on the outer cover corresponds to the through hole on the inner cover and forms the mounting through hole. The valve seat is fixed in the through hole on the inner cover. After the valve core moves up, its upper end can be placed in the through hole on the outer cover.

5. A pot lid according to claim 2, characterized in that, The drive assembly includes a drive rod that slides laterally within the cover body and a drive key located at the top of the cover body and connected to the right end of the drive rod. The left end of the drive rod has a strip-shaped through hole, and the bottom has an inclined surface. The valve core is placed inside the strip-shaped through hole. The protrusion has a circular structure and is located below the drive rod. The left end of the drive rod corresponds to the drive inclined surface on the swing arm. When the drive key is pushed to the left, the drive rod moves to the left. The inclined surface abuts against the protrusion, which drives the valve core to move down, so that the air inlet is exposed inside the cover body. At the same time, the left end of the drive rod abuts against the drive inclined surface, which drives the swing arm to rotate and move the magnet from the first position to the second position.

6. A pot lid according to claim 2, characterized in that, The upper end of the swing arm rotates with the column inside the cover. The driving component is a torsion spring, which is sleeved on the column. The upper end of the torsion spring is connected to the swing arm, and the lower end abuts against a baffle on one side of the column.

7. An electric pressure cooker, characterized in that, The invention includes a pot body and a lid as described in any one of claims 1-6. The pot body is provided with a control circuit board and a magnetic induction switch electrically connected to the control circuit board. When the lid is placed on the pot body, the swing rod inside the lid rotates, causing the magnet to move from a first position to a second position. The magnetic induction switch corresponds to the magnet and is triggered.

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