Knob type multifunctional pressure cooker

Abstract

The knob type multifunctional pressure cooker comprises a cooker cover and a cooker body, and the cooker cover comprises a steel cover, a panel and an adjusting valve; the adjusting valve comprises an adjusting valve element, a valve seat, a valve plug, an adjusting spring, a valve sleeve with a protruding block, a valve shell and an adjusting nut which are coaxially arranged. A sealing piece is arranged below the top surface of the valve plug; the lower side of the adjusting spring abuts against a first annular protrusion on the lower portion of the periphery of the valve plug, and the upper side of the adjusting spring abuts against the inner wall of the valve sleeve. A stepped step is arranged on the inner side of the top surface of the valve shell; the top of the valve plug is positioned in a first positioning hole in the top surface of the valve shell and can slide up and down along the first positioning hole; when the valve shell is rotated to the relative position of the step and the protruding block, the step slides along the protruding block, the valve sleeve drives the valve plug to descend or ascend, and the sealing piece closes or opens the air outlet of the adjusting valve element. According to the cooker, the stepped steps are matched with the protruding blocks, the valve plug is controlled to ascend and descend, and progressive multi-gear pressure adjustment is achieved; the pot cover and the pot body can be fastened or loosened through rotation of the rotating assembly, and opening and closing operation can be completed with one hand.

Description

Technical Field

[0001] This utility model relates to the field of kitchen cooking appliances, and in particular to a knob-type multi-functional pressure cooker. Background Technology

[0002] Many pressure cookers on the market require disassembling the valve body to adjust the pressure during stewing, which is cumbersome and poses a risk of burns. Others have a single adjustment unit that cannot adapt to diverse cooking needs. Some cookers use a weighted valve, which does not allow for pressure adjustment. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a knob-type multi-functional pressure cooker.

[0004] This utility model is achieved through the following technical solution: a knob-type multi-functional pressure cooker, including a lid and a body. The lid includes a steel cover, a panel mounted on the steel cover, a rotating assembly, a fastening structure, a regulating valve for venting and adjusting pressure, a central bolt, and a central nut. The central bolt passes through the rotating assembly, the panel, and the steel cover in sequence and is then tightened with the central nut. The lower end of the rotating assembly passes through the panel and is connected to the fastening structure. The fastening structure fastens or loosens a pair of opposite sides of the steel cover and the body as the rotating assembly rotates. The regulating valve includes a regulating valve core, a valve seat, a valve plug, a regulating spring, a valve sleeve, a valve shell, and a regulating nut arranged coaxially. The valve plug is a downward-opening cylindrical structure with a first vent hole penetrating the top surface and a sealing element on the lower side of the top surface. A first annular protrusion is provided on the lower outer periphery of the valve plug. The valve plug is fitted onto the regulating valve. The adjusting spring and valve sleeve are both fitted around the valve plug on the outer periphery of the valve core. The lower side of the adjusting spring abuts against the first annular protrusion, and its upper side abuts against the inner wall of the valve sleeve. The lower end of the valve sleeve is located inside the valve seat and can slide up and down along it. The valve shell is fitted around the valve seat and can rotate around it. The top surface of the valve shell has a first positioning hole, and the inner side of the top surface of the valve shell has a stepped step. The top of the valve plug is located inside the first positioning hole and can slide up and down along it. The valve sleeve has a protrusion. The adjusting valve core passes through the valve seat and the steel cover and is tightened with the adjusting nut. The adjusting valve core has a hollow channel that runs through its upper and lower sides. The air inlet of the hollow channel is connected to the inside of the pot through the vent hole. When the valve shell is rotated to the position where the step and the protrusion are opposite, the step slides along the protrusion, the valve sleeve drives the valve plug to descend or rise, and the sealing element closes or opens the air outlet of the hollow channel.

[0005] This cookware utilizes a stepped adjustment valve with a protrusion to control the valve plug's movement. Rotating the valve housing drives the valve plug's upward and downward motion, and the elastic support of the adjusting spring ensures smooth and controllable pressure regulation. The sealing element controls the opening and closing of the vent in the hollow channel as the valve plug moves. The vent, hollow channel, and first vent together form an exhaust channel, enabling either pressure relief or pressurization. The cookware's integrated design of the rotating component and locking mechanism allows for easy one-handed operation to lock or unlock the lid and body, ensuring a secure seal.

[0006] The step extends in an arc shape with the central axis of the first positioning hole as a reference. The protrusion is disposed on the outer peripheral sidewall of the valve sleeve, and the protrusion is located on the rotation trajectory of the step. The arc-shaped extended step structure and the rotation trajectory of the protrusion cooperate to ensure that the force is evenly distributed during the rotation of the valve body, and can realize precise adjustment of the pressure level.

[0007] Along the clockwise rotation direction of the valve housing, the distance between the bottom surface of the step and the inner side of the top surface of the valve housing gradually increases; the top of the protrusion forms a conical guide block by setting symmetrically distributed inclined guide surfaces, and when the valve housing rotates, the step slides along the inclined guide surfaces. The setting of the inclined guide surfaces facilitates the sliding of the stepped step, facilitates clockwise and counterclockwise rotation, and converts the rotational torque into the axial displacement of the protrusion.

[0008] Two steps are provided, evenly distributed along the same circumference on the lower side of the top surface of the valve housing; two protrusions are provided, symmetrically arranged on opposite sides of the valve sleeve. The symmetrical layout of the double steps and double protrusions effectively balances the stress state of the valve sleeve, prevents movement jamming caused by unilateral wear, and the evenly distributed contact points form a stable support structure, enabling precise control of the adjustment stroke.

[0009] The valve seat has an outwardly protruding annular bulge on its outer periphery. A pair of straight grooves are formed on opposite sides of the annular bulge, dividing it into two arc-shaped blocks. The two ends of each arc-shaped block extend downwards to form a first locking block and a second locking block. A pair of third locking blocks are provided on opposite sides of the inner wall of the valve body. The distance between the bottom surface of the first locking block and the bottom side of the valve seat is greater than the height of the third locking block, while the distance between the bottom surface of the second locking block and the bottom side of the valve seat is less than the height of the third locking block. When the valve body is fitted onto the outer periphery of the valve seat, the third locking blocks slide in along the straight grooves and can move within the range between the two second locking blocks. This combination of straight grooves and arc-shaped blocks enables rapid installation and positioning of the valve body and valve seat. The straight grooves guide the third locking blocks accurately into the predetermined position, while the second locking blocks block the rotation range of the third locking blocks, preventing excessive rotation and damage to the valve body. The rigid limiting effect of the second locking blocks provides a clear indication of the operating endpoint.

[0010] The valve seat has a first guide block on its inner side, and the valve sleeve has a first guide groove on its outer circumference. The first guide groove is engaged with the first guide block and can slide up and down along it. The valve sleeve has a first mounting hole on its upper side, and the valve plug has a second annular protrusion protruding outward from its upper part. The valve plug passes through the first mounting hole and can slide up and down along it. The diameter of the second annular protrusion is larger than the inner diameter of the first mounting hole. The cooperation between the first guide block and the first guide groove ensures that the valve sleeve always maintains a vertical movement trajectory. The dimensional difference between the second annular protrusion and the first mounting hole forms a mechanical stop, preventing the valve sleeve from accidentally disengaging and constraining the valve sleeve's upward movement to a limited extent.

[0011] The upper side of the steel cover is provided with a second guide groove; the fastening structure is provided symmetrically in a pair, each pair of fastening structures includes a connector and a pressure ring, the pressure ring is provided at the outer end of the connector, the inner end of the connector is provided with a guide post, and the connector is located in the second guide groove; the panel is provided with a mounting groove, and the mounting groove is provided symmetrically with a pair of third guide grooves that pass through the upper and lower sides of the panel; the rotating assembly includes a knob and a decorative piece, the knob is installed in the mounting groove, the decorative piece is detachably installed on the knob, and the knob is provided with a pair of fourth guide grooves; the guide post passes through the third guide groove and is embedded in the fourth guide groove; when the knob is rotated, the fourth guide groove drives the guide post to slide along the third guide groove, and the two pressure rings fasten or loosen the steel cover and the pot body; the third guide groove is a straight guide groove, the length direction of the third guide groove is consistent with the length direction of the second guide groove, and the fourth guide groove gradually extends from the outside of the knob to its inside to form an arc-shaped guide groove. When the rotating assembly rotates, the fourth guide groove forces the guide post to slide along the third guide groove, thereby causing the pressure ring to loosen or tighten between the steel lid and the pot body. The fourth guide groove is an arc-shaped guide groove, which can force the rotational motion of the rotating assembly to be converted into the linear displacement of the guide post, thereby causing the pressure ring to achieve the action of locking inward or loosening outward.

[0012] The device also includes a spring post. A second positioning hole is provided on the lower side of the knob. An arc-shaped groove is provided on the upper side of the mounting slot, and a rack is installed within the arc-shaped groove. A third annular protrusion protrudes outward from the outer circumference of the spring post. The spring post is fitted into the second positioning hole, and the upper side of the third annular protrusion abuts against the lower side of the knob. A steel ball located at the lower part of the spring post is located within the arc-shaped groove and slides along the rack. Guide ribs are provided on both sides of the lower side of the panel, and the connector slides between the two guide ribs. Two limiting points are provided on the edge of the mounting slot, and a limiting block is provided on the lower side of the knob. When the knob is placed into the mounting slot, the limiting block is located between the two limiting points and moves within the range between them. The spring post and the rack of the arc-shaped groove cooperate, and when the knob is rotated, the rolling of the steel ball produces a rolling sound, providing a tactile feedback and a prompting sound. The limiting block moves between two limiting points and is used to control the rotational position of the knob to control the locking or unlocking of the fastening structure.

[0013] It also includes a safety valve assembly, which comprises a safety valve core, a lower safety valve component, a retaining ring, an upper safety valve component, a safety valve spring, and a safety valve sealing ring. The upper safety valve component has an internal cavity with a second vent hole at its top connecting the external environment of the pot to the cavity. A fourth annular protrusion is formed by an outward bulge at its lower periphery. The lower safety valve component is an upward-opening cylindrical structure with a third vent hole at its bottom. A first annular groove is formed on the lower periphery of the lower safety valve component, and the retaining ring is fitted within this groove. The safety valve core has a fifth annular protrusion formed by an outward bulge at its center. A second annular groove is formed by an inward recess at the lower section of the safety valve core, and the safety valve sealing ring is fitted within this groove. The diameter of the safety valve sealing ring is larger than the first annular protrusion. The safety valve assembly has three vent holes; a second mounting hole is provided on the steel cover; the lower safety valve component passes through the second mounting hole from bottom to top and is screwed together with the lower end of the upper safety valve component via a threaded connection; the safety valve spring and safety valve core are located in the cavity formed by the lower safety valve component and the upper safety valve component; the upper end of the safety valve spring abuts against the inner wall of the upper safety valve component, and its lower end is fitted around the outer circumference of the upper section of the safety valve core and abuts against the fifth annular protrusion, causing the safety valve sealing ring to close or open the third vent hole; the panel has a third mounting hole, and the top of the upper safety valve component is located in the third mounting hole and can slide up and down along it; the diameter of the retaining ring is larger than the diameter of the second mounting hole, and the diameter of the fourth annular protrusion is larger than the diameter of the second mounting hole. The safety valve assembly is designed to assist the cookware in venting and depressurizing. The engagement of the retaining ring with the first annular groove constrains the safety valve assembly within the lifting range of the second mounting hole. When the pressure inside the pot is lower than the set value, the safety valve spring pushes the safety valve core downward, and the safety valve sealing ring seals the third vent hole, thereby realizing the pressure boosting or pressure holding function; when the pressure inside the pot exceeds the set value, the entire safety valve assembly will rise and push up the safety valve core, the safety valve sealing ring will open the third vent hole, and the gas inside the pot will enter the cavity formed by the lower and upper parts of the safety valve from the third vent hole, then enter the cavity of the upper part of the safety valve, and finally be discharged from the pot from the second vent hole.

[0014] The valve body sidewall is provided with a lever. The lever is provided to facilitate the operator to rotate the valve body.

[0015] Compared with the prior art, the advantages of this utility model are as follows: The independent regulating valve of this cookware controls the rise and fall of the valve plug through the cooperation of the stepped steps and the protrusions, realizing progressive multi-level adjustment and stable pressure adjustment; the lid can be fastened or loosened by rotating the rotating component, and the opening and closing operation can be completed with one hand, which is convenient; the two valve components are used to achieve sealing and pressurization or venting and depressurization, which can adapt to various cooking needs. Attached Figure Description

[0016] Figure 1This is an exploded view of the structure of an embodiment of the present utility model;

[0017] Figure 2 This is a longitudinal sectional view of an embodiment of the present invention;

[0018] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle;

[0019] Figure 4 for Figure 2 A magnified view of a portion of point B in the middle;

[0020] Figure 5 for Figure 2 A magnified view of a portion of point C in the middle;

[0021] Figure 6 This is a longitudinal sectional view of the pot lid according to an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the steel cover and the fastening structure in an embodiment of the present utility model;

[0023] Figure 8 This is a schematic diagram of the structure of the panel and the fastening structure in an embodiment of the present invention;

[0024] Figure 9 This is a top view of the panel in an embodiment of the present invention;

[0025] Figure 10 This is a structural diagram of the panel from the upper side of an embodiment of the present invention;

[0026] Figure 11 This is a structural diagram of the panel from the lower side of an embodiment of the present invention;

[0027] Figure 12 This is a top view of the knob in an embodiment of the present invention;

[0028] Figure 13 This is a bottom view of the knob in an embodiment of the present invention;

[0029] Figure 14 for Figure 13 Sectional view along the DD direction;

[0030] Figure 15 This is a schematic diagram of the upper structure of the rotating assembly after the decorative piece has been removed, according to an embodiment of the present invention.

[0031] Figure 16 This is a schematic diagram of the structure of the rotating assembly in the lower direction after the decorative piece is removed, according to an embodiment of the present utility model.

[0032] Figure 17This is an exploded view of the safety valve assembly according to an embodiment of the present invention;

[0033] Figure 18 This is a longitudinal section view of the safety valve assembly according to an embodiment of the present invention.

[0034] Figure 19 This is an exploded view of the regulating valve structure according to an embodiment of the present invention;

[0035] Figure 20 This is an exploded view of the regulating valve in another direction according to an embodiment of the present invention;

[0036] Figure 21 This is a cross-sectional view of the regulating valve after the regulating spring has been removed and the valve is longitudinally cut along the lever block according to an embodiment of the present utility model.

[0037] Figure 22 This is a longitudinal section view of the valve housing according to an embodiment of the present invention;

[0038] Figure 23 This is a bottom view of the valve housing according to an embodiment of the present invention;

[0039] Figure 24 This is a perspective view of the valve housing from the lower side of an embodiment of the present invention;

[0040] Figure 25 This is a schematic diagram of the valve seat and valve sleeve fitting together according to an embodiment of the present invention;

[0041] Figure 26 This is a front view of the valve seat and valve sleeve mating in an embodiment of this utility model;

[0042] Figure 27 for Figure 26 EE-directed sectional view;

[0043] Figure 28 This is a schematic diagram of the structure of the valve seat from the upper side in an embodiment of this utility model;

[0044] Figure 29 This is a schematic diagram of the structure of the valve seat from the lower side in an embodiment of this utility model;

[0045] Figure 30 This is a schematic diagram of the structure of the valve sleeve from the upper side in an embodiment of this utility model;

[0046] Figure 31 This is a schematic diagram of the structure of the valve sleeve in the lower direction according to an embodiment of the present invention;

[0047] Figure 32 This is a top view of the valve sleeve according to an embodiment of the present utility model.

[0048] The following are the meanings of the reference numerals in the diagram: 1. Steel cover; 11. Second guide groove; 12. Second mounting hole; 2. Panel; 21. Mounting groove; 22. Third guide groove; 23. Arc-shaped slide groove; 24. Guide rib; 25. Limiting point; 26. Third mounting hole; 31. Knob; 311. Fourth guide groove; 312. Second positioning hole; 313. Limiting block; 32. Decorative piece; 33. Center bolt; 34. Center nut; 35. Spring column; 351. Third annular protrusion; 41. Pressure ring; 42. Connector; 43. Guide column; 51. Adjusting valve core; 52. Valve seat; 521. Arc-shaped block; 522. Straight groove; 523. First locking block; 524. Second locking block; 525. First guide block; 53. Valve plug; 531. First row 532. Vent; 533. First annular protrusion; 534. Second annular protrusion; 54. Adjusting spring; 55. Valve sleeve; 551. Protrusion; 552. Inclined guide surface; 553. First guide groove; 554. First mounting hole; 56. Valve body; 561. First positioning hole; 562. Step; 563. Third locking block; 564. Pulling block; 57. Adjusting nut; 571. Vent hole; 61. Safety valve core; 611. Fifth annular protrusion; 612. Second annular groove; 62. Lower part of safety valve; 621. Third vent hole; 622. First annular groove; 63. Snap ring; 64. Upper part of safety valve; 641. Second vent hole; 642. Fourth annular protrusion; 65. Safety valve spring; 66. Safety valve sealing ring. Detailed Implementation

[0049] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0050] Example

[0051] See Figures 1 to 32This is a knob-type multi-functional pressure cooker, including a lid and a body. The lid includes a steel cover 1, a panel 2 mounted on the steel cover 1, a rotating assembly, a fastening structure, a regulating valve for venting and adjusting pressure, a central bolt 33, and a central nut 34. The central bolt 33 passes through the rotating assembly, the panel 2, and the steel cover 1 in sequence and is then tightened with the central nut 34. The lower end of the rotating assembly passes through the panel 2 and is connected to the fastening structure. The fastening structure tightens or loosens the steel cover 1 as the rotating assembly rotates. A set of opposite sides of the pot body; the regulating valve includes a regulating valve core 51, valve seat 52, valve plug 53, regulating spring 54, valve sleeve 55, valve shell 56, and regulating nut 57 arranged coaxially; the valve plug 53 is a downward-opening cylindrical structure, with a first vent hole 531 penetrating through the top surface, and a sealing element 532 on the lower side of the top surface; a first annular protrusion 533 is provided on the lower part of the outer periphery of the valve plug 53, and the valve plug 53 is sleeved on the outer periphery of the regulating valve core 51, and the regulating spring 54... Valve sleeves 55 are all fitted around the outer periphery of valve plugs 53; the lower side of the adjusting spring 54 abuts against the first annular protrusion 533, and its upper side abuts against the inner wall of the valve sleeve 55; the lower end of the valve sleeve 55 is located inside the valve seat 52 and can slide up and down along it; the valve body 56 is fitted around the outer periphery of the valve seat 52 and can rotate around it; the top surface of the valve body 56 has a first positioning hole 561, and the inner side of the top surface of the valve body 56 has a stepped step 562; the top of the valve plug 53 is located inside the first positioning hole 561 and can slide up and down along it. The sleeve 55 is provided with a protrusion 551; the regulating valve core 51 passes through the valve seat 52 and the steel cover 1 and is tightened with the regulating nut 57. The regulating valve core 51 has a hollow channel that runs through its upper and lower sides. The air inlet of the hollow channel is connected to the inside of the pot through the vent hole 571. When the valve shell 56 is rotated to the position where the step 562 is opposite to the protrusion 551, the step 562 slides along the protrusion 551, and the valve sleeve 55 drives the valve plug 53 to descend or rise. The sealing element 532 closes or opens the air outlet of the hollow channel. In this embodiment, the regulating valve core 51 has a ring-shaped protrusion in the middle, which is stuck around the hole of the valve seat 52 to prevent the regulating valve core 51 from separating from the valve seat 52.

[0052] This cookware utilizes the stepped step 562 of the regulating valve in conjunction with the protrusion 551 to control the lifting and lowering stroke of the valve plug 53. This allows the rotating valve shell 56 to drive the valve plug 53 in a lifting and lowering motion. Combined with the elastic support of the regulating spring 54, this makes the pressure regulation process smoother and more controllable. The sealing element 532 controls the opening and closing of the vent in the hollow channel as the valve plug 53 rises and falls. The vent hole 571, the hollow channel, and the first vent hole 531 together form an exhaust channel, thereby achieving the functions of venting and depressurizing or sealing and pressurizing. Through the linkage design of the rotating component and the locking structure, this cookware allows for locking or unlocking of the lid and body with a single-handed rotation, enabling one-handed opening and closing operations and sealing.

[0053] The step 562 extends in an arc shape with the central axis of the first positioning hole 561 as the reference, and the protrusion 551 is set on the outer peripheral side wall of the valve sleeve 55, with the protrusion 551 located on the rotation trajectory of the step 562. The arc-shaped extension of the step 562 and the rotation trajectory of the protrusion 551 cooperate to ensure that the force is evenly distributed during the rotation of the valve body 56, and can realize precise adjustment of the pressure level.

[0054] Along the clockwise rotation direction of the valve housing 56, the distance between the bottom surface of the step 562 and the inner side of the top surface of the valve housing 56 gradually increases; the top of the protrusion 551 forms a conical guide block by setting symmetrically distributed inclined guide surfaces 552. When the valve housing 56 rotates, the step 562 slides along the inclined guide surfaces. The setting of the inclined guide surfaces 552 facilitates the sliding of the stepped step 562, facilitates clockwise and counterclockwise rotation, and converts the rotational torque into the axial displacement of the protrusion 551.

[0055] Two steps 562 are provided, evenly distributed along the same circumference on the lower side of the top surface of the valve housing 56; two protrusions 551 are provided, symmetrically arranged on the opposite side of the valve sleeve 55. The symmetrical layout of the double steps 562 and the double protrusions effectively balances the stress state of the valve sleeve 55, prevents movement jamming caused by unilateral wear, and the evenly distributed contact points form a stable support structure, enabling precise control of the adjustment stroke.

[0056] A ring-shaped protrusion protrudes outward from the outer periphery of the valve seat 52. A pair of straight grooves 522 are respectively provided on the opposite side of the ring-shaped protrusion, dividing the ring-shaped protrusion into two arc-shaped blocks 521. The two ends of the arc-shaped blocks 521 extend downward to form a first locking block 523 and a second locking block 524, respectively. A pair of third locking blocks 563 are provided on opposite sides of the inner wall of the valve body 56. The distance between the bottom surface of the first locking block 523 and the bottom side of the valve seat 52 is greater than the height of the third locking block 563, and the distance between the bottom surface of the second locking block 524 and the bottom side of the valve seat 52 is less than the height of the third locking block 563. When the valve body 56 is fitted on the outer periphery of the valve seat 52, the third locking block 563 slides in along the straight groove 522 and can move within the range between the two second locking blocks 524. The combination structure of straight groove 522 and arc block 521 enables quick installation and positioning of valve body 56 and valve seat 52. Straight groove 522 guides third locking block 563 to accurately enter the predetermined position. Second locking block 524 can block the rotation range of third locking block 563 to avoid excessive rotation and damage to valve body 56. The rigid limit of second locking block 524 provides a clear indication of the operation endpoint.

[0057] A first guide block 525 is provided on the inner side of the valve seat 52, and a first guide groove 553 is provided on the outer periphery of the valve sleeve 55. The first guide groove 553 is engaged with the first guide block 525 and can slide up and down along it. A first mounting hole 554 is provided on the upper side of the valve sleeve 55. A second annular protrusion 534 protrudes outward from the upper part of the valve plug 53. The valve plug 53 passes through the first mounting hole 554 and can slide up and down along it. The diameter of the second annular protrusion 534 is larger than the inner diameter of the first mounting hole 554. The cooperation between the first guide block 525 and the first guide groove 553 ensures that the valve sleeve 55 always maintains a vertical movement trajectory. The dimensional difference between the second annular protrusion 534 and the first mounting hole 554 forms a mechanical stop to prevent the valve sleeve 55 from accidentally disengaging and to limit the upward movement of the valve sleeve 55.

[0058] The upper side of the steel cover 1 is provided with a second guide groove 11; a pair of symmetrical fastening structures are provided, each pair of fastening structures including a connector 42 and a pressure ring 41, the pressure ring 41 is provided at the outer end of the connector 42, the inner end of the connector 42 is provided with a guide post 43, and the connector 42 is located in the second guide groove 11; the panel 2 is provided with a mounting groove 21, and a pair of symmetrical third guide grooves 22 are provided in the mounting groove 21 to pass through the upper and lower sides of the panel 2; the rotating component includes a knob 31 and a decorative piece 32, the knob 31 is installed in the mounting groove 21, and the decorative piece 32 is detachable. On the knob 31, a pair of fourth guide grooves 311 are provided; the guide post 43 passes through the third guide groove 22 and is embedded in the fourth guide groove 311; when the knob 31 is rotated, the fourth guide groove 311 drives the guide post 43 to slide along the third guide groove 22, and the two pressure rings 41 fasten or loosen the steel cover 1 and the pot body; the third guide groove 22 is a straight guide groove, and the length direction of the third guide groove 22 is consistent with the length direction of the second guide groove 11. The fourth guide groove 311 gradually extends from the outside of the knob 31 to its inside to form an arc-shaped guide groove. When the rotating component rotates, the fourth guide groove 311 forces the guide post 43 to slide along the third guide groove 22, thereby causing the pressure rings 41 to loosen or fasten the steel cover 1 and the pot body. The fourth guide groove 311 is an arc-shaped guide groove, and the structure of the arc-shaped guide groove forces the rotational motion of the rotating component to be converted into the linear displacement of the guide post 43, thereby causing the pressure rings 41 to achieve the action of fastening inward or loosening outward.

[0059] It also includes a spring post 35, a second positioning hole 312 on the lower side of the knob 31, an arc-shaped sliding groove 23 on the upper side of the mounting groove 21, and a rack inside the arc-shaped sliding groove 23; a third annular protrusion 351 protrudes outward from the outer periphery of the spring post 35, the spring post 35 is fitted into the second positioning hole 312, the upper side of the third annular protrusion 351 abuts against the lower side of the knob 31, and the steel ball at the lower part of the spring post 35 is located in the arc-shaped sliding groove 23 and slides along the rack; guide ribs 24 are respectively provided on the horizontal sides of the lower side of the panel 2, and the connector 42 slides between the two guide ribs 24; two limiting points 25 are provided on the groove edge of the mounting groove 21, and a limiting block 313 is provided on the lower side of the knob 31. When the knob 31 is placed into the mounting groove 21, the limiting block 313 is located between the two limiting points 25 and moves within the range between the two limiting points 25. The spring post 35 engages with the rack of the arc-shaped slide groove 23. When the knob 31 is rotated, the rolling of the steel ball produces a rolling sound, providing both tactile feedback and a audible indication. The limiting block 313 moves between the two limiting points 25, controlling the rotational position of the knob 31 to lock or unlock the fastening structure. In this embodiment, the outer circumference of the knob 31 is provided with several anti-slip textures.

[0060] It also includes a safety valve assembly, which comprises a safety valve core 61, a lower safety valve component 62, a retaining ring 63, an upper safety valve component 64, a safety valve spring 65, and a safety valve sealing ring 66. The upper safety valve component 64 has an internal cavity, with a second vent 641 at its top connecting the external environment of the pot to the cavity, and a fourth annular protrusion 642 forming an outward circumference at its lower periphery. The lower safety valve component 62 is an upward-opening cylindrical structure with a third vent 621 at its bottom surface. A first annular groove 622 is formed on the lower periphery of the lower safety valve component 62, and the retaining ring 63 is fitted within the first annular groove 622. The safety valve core 61 has a fifth annular protrusion 611 forming an outward circumference at its middle periphery, and a second annular groove 612 is formed by an inward recess at the lower section of the safety valve core 61. The safety valve sealing ring 66 is fitted within the second annular groove 612, thus sealing the safety valve. The diameter of ring 66 is larger than the diameter of the third vent hole 621; a second mounting hole 12 is provided on the steel cover 1; the lower safety valve part 62 passes through the second mounting hole 12 from bottom to top and is screwed together with the lower end of the upper safety valve part 64 by a threaded connection; the safety valve spring 65 and the safety valve core 61 are located in the cavity formed by the lower safety valve part 62 and the upper safety valve part 64, the upper end of the safety valve spring 65 abuts against the inner wall of the upper safety valve part 64, and its lower end is sleeved on the outer circumference of the upper section of the safety valve core 61 and abuts against the fifth annular protrusion 611, causing the safety valve sealing ring 66 to close or open the third vent hole 621; a third mounting hole 26 is provided on the panel 2, the top of the upper safety valve part 64 is located in the third mounting hole 26 and can slide up and down along it; the diameter of the retaining ring 63 is larger than the diameter of the second mounting hole 12, and the diameter of the fourth annular protrusion 642 is larger than the diameter of the second mounting hole 12. The safety valve assembly is set to assist the cookware in venting and depressurizing. The engagement of the retaining ring 63 with the first annular groove 622 constrains the safety valve assembly within the lifting range of the second mounting hole 12. When the pressure inside the pot is lower than the set value, the safety valve spring 65 pushes the safety valve core 61 downwards, and the safety valve sealing ring 66 seals the third vent hole 621, thereby achieving the pressure boosting or pressure holding function. When the pressure inside the pot exceeds the set value, the entire safety valve assembly rises, lifting the safety valve core 61. The safety valve sealing ring 66 opens the third vent hole 621, allowing gas inside the pot to enter the cavity formed by the lower safety valve part 62 and the upper safety valve part 64 from the third vent hole 621, then enter the cavity of the upper safety valve part 64, and finally exit the pot from the second vent hole 641. In this embodiment, the lower safety valve part 62 has a fourth vent hole on its side wall that penetrates its inner and outer walls. When the gas pressure inside the pot is lower than the set value (5 kPa), the gas inside the pot can enter the cavity between the lower safety valve part 62 and the upper safety valve part 64 from the fourth vent hole, and then exit the pot from the second vent hole 641.

[0061] In this embodiment, when there is no gas pressure inside the pot, the safety valve assembly is in the lowered state. When the gas pressure inside the pot reaches the set value (5 kPa), the gas inside the pot will push the safety valve assembly up. When the gas pressure inside the pot exceeds the set value (168 kPa to 240 kPa), the gas pressure will push the safety valve core 61 of the assembly up, and the channel between the upper safety valve 64 and the lower safety valve 62 will be opened, allowing the gas inside the pot to be discharged outward through the channel.

[0062] The valve housing 56 is provided with a toggle block 564 on its side wall. The toggle block 564 is provided to facilitate the operator to rotate the valve housing 56.

[0063] In this embodiment, when the working valve, safety valve assembly, etc. are installed on the steel cover 1 and panel 2, corresponding mounting holes will be opened. These mounting holes are opened according to actual needs, so they do not need to be described one by one in the structure of this application.

[0064] Installation in this embodiment:

[0065] 1) Lay the steel cover 1 flat, insert the fastening structure (pressure ring 41, connector 42) on both sides, and install the safety valve assembly;

[0066] 2) Place panel 2 on steel cover 1, so that the two third guide grooves 22 in the middle of panel 2 fit into the guide post 43 of the snap-fit ​​structure, and then gently push panel 2 so that the center hole of panel 2 is aligned with the center hole of steel cover 1.

[0067] 3) Place the knob 31 into the mounting groove 21 in the center of the panel 2, and make the guide post 43 of the connector 42 pass into the fourth guide groove 311 of the knob 31;

[0068] 4) Pass the center bolt 33 through the center hole of the knob 31, the center hole of the panel 2, and the center hole of the steel cover 1 from top to bottom, and tighten it with the center nut 34;

[0069] 5) Rotate the valve core of the regulating valve to the D-shaped hole in the panel 2 and through the steel cover 1, and lock it with the adjusting nut 57;

[0070] 6) Align the protrusion of the decorative piece 32 with the groove of the knob 31 and press it in firmly.

[0071] The working principle of this embodiment:

[0072] 1) By rotating the knob 31, the fourth guide groove 311 of the knob 31 drives the guide post 43 on the connector 42 to move. Since the guide post 43 passes through the third guide groove 22 set in the panel 2 and the guide rib 24 provides guidance and limiting, the connector 42 can only move horizontally in a straight line from the outside to the inside or from the inside to the outside in the second guide groove 11. When moving from the outside to the inside, the pressure ring 41 tightens inward. The two limiting points 25 of the mounting groove 21 of the panel 2 control the rotation position of the knob 31 to lock or unlock the fastening structure.

[0073] 2) The valve body 56 of the regulating valve has a stepped step 562 inside. By rotating the valve body 56, steps 562 of different heights are formed to engage and slide with the protrusion 551 in the valve sleeve 55. The valve sleeve 55 slides down and applies pressure to the regulating spring 54. The regulating spring 54 transmits the force to the valve plug 53. The sealing element 532 of the valve plug 53 seals the air outlet of the hollow channel in the regulating valve core 51. Rotating the valve body 56 changes the degree of sealing of the sealing element 532 to the air outlet, which can form different working pressures.

[0074] The above detailed description is a specific description of a feasible embodiment of the present utility model. This embodiment is not intended to limit the patent scope of the present utility model. All equivalent implementations or modifications that do not depart from the present utility model should be included in the patent scope of this case.

Claims

1. A knob-type multi-functional pressure cooker, comprising a lid and a body, characterized in that: The pot lid includes a steel lid, a panel mounted on the steel lid, a rotating assembly, a fastening structure, a regulating valve for venting and adjusting pressure, a central bolt, and a central nut. The central bolt passes through the rotating assembly, the panel, and the steel lid in sequence before being tightened with the central nut. The lower end of the rotating assembly passes through the panel and is connected to the fastening structure. The fastening structure fastens or loosens a pair of opposite sides of the steel lid and the pot body as the rotating assembly rotates. The regulating valve includes a coaxially arranged regulating valve core, valve seat, valve plug, regulating spring, valve sleeve, valve body, and a regulating nut with a vent hole. The valve plug is a downward-opening cylindrical structure with a first vent hole penetrating its top surface and a sealing element on its lower side. A first annular protrusion is provided on the lower part of the outer periphery of the valve plug. The valve plug is sleeved on the outer periphery of the regulating valve core, and the regulating spring and valve sleeve are also sleeved on it. On the outer periphery of the valve plug; the lower side of the adjusting spring abuts against the first annular protrusion, and its upper side abuts against the inner wall of the valve sleeve; the lower end of the valve sleeve is located inside the valve seat and can slide up and down along it; the valve shell is sleeved on the outer periphery of the valve seat and can rotate around it; the top surface of the valve shell has a first positioning hole, and the inner side of the top surface of the valve shell has a stepped step; the top of the valve plug is located inside the first positioning hole and can slide up and down along it; the valve sleeve has a protrusion; the adjusting valve core passes through the valve seat and the steel cover and is tightened with the adjusting nut; the adjusting valve core has a hollow channel that passes through its upper and lower sides, and the air inlet of the hollow channel is connected to the inside of the pot through the vent hole; when the valve shell is rotated to the position where the step and the protrusion are opposite, the step slides along the protrusion, the valve sleeve drives the valve plug to descend or rise, and the sealing element closes or opens the air outlet of the hollow channel.

2. The knob-type multi-functional pressure cooker according to claim 1, characterized in that: The step extends in an arc shape with the central axis of the first positioning hole as a reference, and the protrusion is disposed on the outer peripheral side wall of the valve sleeve, and the protrusion is located on the rotation trajectory of the step.

3. The knob-type multi-functional pressure cooker according to claim 1, characterized in that: As the valve housing rotates clockwise, the distance between the bottom surface of the step and the inner side of the top surface of the valve housing gradually increases; the top of the protrusion forms a conical guide block by setting symmetrically distributed inclined guide surfaces, and the step slides along the inclined guide surfaces when the valve housing rotates.

4. The knob-type multi-functional pressure cooker according to claim 1, characterized in that: Two steps are provided, evenly distributed along the same circumference on the lower side of the top surface of the valve housing; two protrusions are provided, symmetrically arranged on opposite sides of the valve sleeve.

5. The knob-type multi-functional pressure cooker according to claim 1, characterized in that: The valve seat has an outwardly protruding annular protrusion on its outer periphery. A pair of straight grooves are formed on the opposite sides of the annular protrusion, dividing the annular protrusion into two arc-shaped blocks. The two ends of the arc-shaped blocks extend downward to form a first locking block and a second locking block, respectively. A pair of third locking blocks are provided on opposite sides of the inner wall of the valve body. The distance between the bottom surface of the first locking block and the bottom side of the valve seat is greater than the height of the third locking block, and the distance between the bottom surface of the second locking block and the bottom side of the valve seat is less than the height of the third locking block. When the valve body is fitted onto the outer periphery of the valve seat, the third locking blocks slide in along the straight grooves and can move within the range between the two second locking blocks.

6. The knob-type multi-functional pressure cooker according to claim 1, characterized in that: The valve seat has a first guide block on its inner side and a first guide groove on the outer periphery of the valve sleeve. The first guide groove is engaged with the first guide block and can slide up and down along it. The valve sleeve has a first mounting hole on its upper side and a second annular protrusion protrudes outward from the upper part of the valve plug. The valve plug passes through the first mounting hole and can slide up and down along it. The diameter of the second annular protrusion is larger than the inner diameter of the first mounting hole.

7. The knob-type multi-functional pressure cooker according to claim 1, characterized in that: The upper side of the steel cover is provided with a second guide groove; the fastening structure is provided symmetrically in a pair, each pair of fastening structures includes a connector and a pressure ring, the pressure ring is provided at the outer end of the connector, the inner end of the connector is provided with a guide post, and the connector is located in the second guide groove; the panel is provided with a mounting groove, and the mounting groove is provided symmetrically with a pair of third guide grooves that pass through the upper and lower sides of the panel; the rotating assembly includes a knob and a decorative piece, the knob is installed in the mounting groove, the decorative piece is detachably installed on the knob, and the knob is provided with a pair of fourth guide grooves; the guide post passes through the third guide groove and is embedded in the fourth guide groove; when the knob is rotated, the fourth guide groove drives the guide post to slide along the third guide groove, and the two pressure rings fasten or loosen the steel cover and the pot body; the third guide groove is a straight guide groove, the length direction of the third guide groove is consistent with the length direction of the second guide groove, and the fourth guide groove gradually extends from the outside of the knob to its inside to form an arc-shaped guide groove.

8. The knob-type multi-functional pressure cooker according to claim 7, characterized in that: It also includes a spring post; a second positioning hole is provided on the lower side of the knob; an arc-shaped sliding groove is provided on the upper side of the mounting groove; a rack is provided in the arc-shaped sliding groove; a third annular protrusion protrudes outward from the outer periphery of the spring post; the spring post is fitted into the second positioning hole; the upper side of the third annular protrusion abuts against the lower side of the knob; a steel ball provided at the lower part of the spring post is located in the arc-shaped sliding groove and slides along the rack; guide ribs are provided on both sides of the lower side of the panel; the connector slides between the two guide ribs; two limiting points are provided on the edge of the mounting groove; a limiting block is provided on the lower side of the knob; when the knob is placed into the mounting groove, the limiting block is located between the two limiting points and moves within the range between the two limiting points.

9. The knob-type multi-functional pressure cooker according to claim 1, characterized in that: It also includes a safety valve assembly, which comprises a safety valve core, a lower safety valve component, a retaining ring, an upper safety valve component, a safety valve spring, and a safety valve sealing ring. The upper safety valve component has an internal cavity with a second vent hole at its top connecting the external environment of the pot to the cavity. A fourth annular protrusion is formed by an outward bulge at its lower periphery. The lower safety valve component is an upward-opening cylindrical structure with a third vent hole at its bottom. A first annular groove is formed on the lower periphery of the lower safety valve component, and the retaining ring is fitted within this groove. The safety valve core has a fifth annular protrusion formed by an outward bulge at its center. A second annular groove is formed by an inward recess at the lower section of the safety valve core, and the safety valve sealing ring is fitted within this groove. The diameter of the safety valve sealing ring is larger than the first annular protrusion. The three exhaust ports have different diameters; the steel cover has a second mounting hole; the lower safety valve part passes through the second mounting hole from bottom to top and is screwed together with the lower end of the upper safety valve part by a threaded connection; the safety valve spring and safety valve core are located in the cavity formed by the lower safety valve part and the upper safety valve part, the upper end of the safety valve spring abuts against the inner wall of the upper safety valve part, and its lower end is fitted around the outer circumference of the upper section of the safety valve core and abuts against the fifth annular protrusion, causing the safety valve sealing ring to close or open the third exhaust port; the panel has a third mounting hole, the top of the upper safety valve part is located in the third mounting hole and can slide up and down along it; the diameter of the retaining ring is larger than the diameter of the second mounting hole, and the diameter of the fourth annular protrusion is larger than the diameter of the second mounting hole.

10. The knob-type multi-functional pressure cooker according to claim 1, characterized in that: The valve housing sidewall is provided with a lever.

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