A pressure cooker with a new opening and closing structure

Abstract

The invention discloses a pressure cooker with a novel opening and closing structure, comprising a pot body, side ears and a pot cover assembly, wherein the pot cover assembly is placed on the pot body, the side ears are installed on the side walls of the pot body, and the pot mouth of the pot body extends outward to form a step structure, wherein the step structure comprises a starting position and a retaining edge, wherein the starting position is arranged horizontally, the lower end of the retaining edge is connected to the outer end of the starting position, and the inner end of the starting position is connected to the pot body; the pot cover assembly comprises a pressure cover, a safety valve, an opening and closing device for locking or releasing the pressure cover and the pot body, and a knob assembly for controlling the opening and closing device to lock or release the pressure cover and the pot body; the outer edge of the pressure cover is placed on the starting position, and the outer periphery of the pressure cover is located within the retaining edge. The pressure cooker can realize the opening and closing of the pot cover by one hand by adjusting the rotation of the knob assembly; the setting of the step structure can enhance the pressure bearing capacity of the pot edge and prevent the dripping phenomenon caused by slight defects in the sealing ring; the safety device plays a protective role and reduces accidental injuries to personnel.

Description

Technical Field

[0001] The invention relates to the technical field of kitchen cooking utensils, in particular to a pressure cooker with a novel opening and closing structure. Background Art

[0002] The pressure cookers on the market are complicated to open and close. Some use the misaligned engagement between the lid and the pot body, which requires both hands to complete the opening and closing operation. Some are too complicated to be understood by users. Some pressure cookers are prone to having the lid and pot body in a half-opened state during use, causing the pot body and lid to not buckle, resulting in pressure leakage in the pot, causing safety accidents. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a pressure cooker with a novel opening and closing structure.

[0004] The present invention is realized through the following technical scheme: a pressure cooker with a novel opening and closing structure, comprising a pot body, side ears and a pot cover assembly, wherein the pot cover assembly is placed on the pot body, the side ears are installed on the side walls of the pot body, the pot mouth of the pot body extends outward to form a step structure, the step structure comprises a starting position and a retaining edge, the starting position is horizontally arranged, the lower end of the retaining edge is connected to the outer end of the starting position, and the inner end of the starting position is connected to the pot body; the pot cover assembly comprises a pressure cover, a safety valve for exhausting air, an opening and closing device clamped on the pressure cover and locking or releasing the pressure cover and the pot body, and a knob assembly for controlling the opening and closing device to lock or release the pressure cover and the pot body by rotating; the outer edge of the pressure cover is placed on the starting position, and the outer periphery of the pressure cover is located within the retaining edge.

[0005] The opening and closing device can tighten or loosen the pressure cover and the pot body under the control of the knob assembly, and the cover can be opened and closed with one hand. The setting of the level structure can enhance the pressure bearing capacity of the pot edge and prevent dripping caused by slight defects in the sealing ring, prevent water from dripping on the stove, and the liquid droplets on the cover edge and the pot edge will flow back into the pot.

[0006] The outer edge of the pressure cover is bent inward to form an inner bending structure, and a pot mouth sealing ring is installed in the inner bending structure. The outer diameter of the pot mouth sealing ring located at the inner bending structure is an embedded part, and the lower side of the pot mouth sealing ring is a sealing part. The upper side of the embedded part extends obliquely toward the inner side of the pressure cover, and the sealing part extends obliquely downward from the connection. When the pressure cover is closed, the sealing part of the pot mouth sealing ring presses against the stepping position. The inner bending structure can be used to clamp the embedded part of the pot mouth sealing ring to realize the installation function; the sealing part presses against the stepping position to enhance the sealing function. The setting of the pot mouth sealing ring can be used to seal the pressure cooker and has the function of maintaining pressure.

[0007] The opening and closing device includes at least two opening and closing mechanisms, and the opening and closing mechanism includes a pressure ring, a slider and a first guide column; the slider is provided with a first mounting hole and an elongated hole, the first mounting hole is connected to the elongated hole, the pressure ring is arranged at the outer end of the slider, and the first guide columns are respectively arranged at the inner ends of the slider; the pressure cover is provided with a mounting panel, the middle part of the mounting panel is recessed downward to form a mounting groove, the mounting groove is provided with a guide elongated hole and a first center hole, the mounting panel is provided with a second mounting hole for installing the safety valve, and the lower side of the mounting panel is provided with a sliding groove; the knob assembly includes a knob, a knob fixing piece and a center nut, the knob is provided with a second center hole, a positioning hole and a third mounting hole, and a fixing column is provided on the lower side of the knob fixing piece; the number of the guide elongated holes matches the number of the pressure rings, and the number of the third mounting holes matches the number of the guide elongated holes The number of the long holes matches the number of the long holes; the pressure cover is provided with a third center hole in the center, and a positioning column is provided on the upper side of the pressure cover, and the number of the positioning columns matches the number of the pressure ring and the position is opposite; the pressure ring is placed on the pressure cover, and the long hole is sleeved on the positioning column; the mounting panel is mounted on the pressure cover, and the pressure ring is clamped between the pressure cover and the mounting panel, and the slider is mounted in the slide groove and can slide along it; the knob is mounted in the mounting groove, and the first guide column is inserted into the third mounting hole after passing through the guide long hole; the fixing column passes through the second center hole, the first center hole, and the third center hole in sequence from top to bottom and is tightened with the center nut; the knob is turned, and the third mounting hole forces the first guide column to slide along the guide long hole, so that the pressure ring locks or loosens the pressure cover and the pot body. When the pressure cooker adopts two opening and closing mechanisms, the pot cover and the pot body can be fastened in a buckling manner, and when more than two opening and closing mechanisms are used, the pot cover and the pot body can be fastened more firmly. The positioning column is provided to provide sliding orientation and support for the long hole. The installation panel can store the slider and the first guide column, and the slide groove forms a channel for the slider to slide.

[0008] The opening and closing device is provided with three opening and closing mechanisms, which are located on the same plane and form an angle of 120 degrees between each other; the first side of the inner end of the slider extends outwardly, the slider is a gradually narrowing structure from the middle to the inner end, and the second side of the slider extends from the middle of the slider to the inner end in an arc-shaped manner to the first side of the inner end of the slider; the first guide column of the inner end of the three sliders is located below the mounting groove, the first side of the inner end of the slider located in the middle is close to the second side of the slider on the left side and can move along the arc-shaped tilted direction of the side, and the first side of the inner end of the slider located on the right side is close to the second side of the slider in the middle and can move along the arc-shaped tilted direction of the side. The arrangement of the three opening and closing mechanisms can make the pot cover and the pot body buckle more tightly. The structural arrangement on both sides of the inner end of the slider can provide sliding space for adjacent sliders, thereby realizing the outward extension or inward retraction of the slider.

[0009] The knob assembly also includes a hand-feeling column and a tension spring; a sleeve is provided on the lower side of the fixing column and the knob fixing part, the fixing column is located in the sleeve, a circle of concave-convex grooves is provided on the lower side of the sleeve, the tension spring and the hand-feeling column are placed in the positioning hole in sequence, the lower end of the tension spring presses against the bottom of the positioning hole, the upper end presses against the lower end of the hand-feeling column, and the upper end of the hand-feeling column presses against the concave-convex groove. The concave-convex groove cooperates with the hand-feeling column and the tension spring, so that when the knob is turned, the knob fixing part has a vibration effect and emits a beeping sound to remind the user that it is turning to open and close or perform an exhaust function.

[0010] The cover edge of the pressure cover is provided with a safety device for deforming and displacing the pot mouth sealing ring when the pressure in the pot exceeds a set value, and the safety device is located below the pressure ring.

[0011] The safety device is a protruding surface formed by the cover surface of the pressure cover from bottom to top, and the protruding surface is aligned with the upper side of the pot mouth sealing ring embedded part; or, the safety device is a venting slit opened on the cover surface of the pressure cover, and the venting slit is aligned with the upper side of the pot mouth sealing ring embedded part; or, the safety device is a pressure relief hole opened on the cover surface of the pressure cover, and the pressure relief hole is aligned with the upper side of the pot mouth sealing ring embedded part. When the pressure in the pot reaches the set value, the pot mouth sealing ring will shift (deform) toward the safety device, and pressure relief will be performed at this time; the safety device is arranged below the pressure ring (i.e., inside the pressure ring), and when pressure is relieved, the pressure ring blocks the direct spray of air pressure (buffering effect), which plays a protective role and avoids burns. The three types of settings of the protruding surface, the venting slit, and the venting hole are all to form a space for the deformation or displacement of the pot mouth sealing ring. The pot mouth sealing ring is deformed and translated, so that the pressure in the pot leaks out from the safety device, realizing the function of auxiliary exhaust and pressure relief.

[0012] The upper side of the side ear is provided with a first anti-slip pattern, which is formed by a plurality of grooves evenly arranged in parallel vertically and horizontally; the upper side of the knob fixing piece is provided with a second anti-slip pattern, which is formed by a plurality of grooves evenly arranged in parallel vertically and horizontally. The first anti-slip pattern on the side ear facilitates the user to hold the pressure cooker firmly and prevent the hand from slipping and falling off. The second anti-slip pattern can increase the friction with the hand, making the grip more stable.

[0013] The safety valve comprises an upper valve body, a lower valve body, a first spring, a valve plug, a first sealing ring and a second sealing ring; the lower end of the upper valve body is connected to the upper end of the lower valve body by threads, and a cavity is provided between the two. The top of the upper valve body is provided with a first exhaust hole connected to the cavity, and the lower part thereof is provided with a circle of raised annular brim; one end of the valve plug is provided with a first clamping groove and a second clamping groove surrounding it, respectively, and the other end thereof is a ball segment structure; the bottom of the lower valve body is provided with a second exhaust hole connected to the cavity, and the bottom of the lower valve body is provided with a third clamping groove surrounding the lower valve body, and the periphery of the lower valve body is provided with a plurality of fourth exhaust holes connected to the cavity, and the fourth exhaust holes are located above the third clamping groove; the valve plug is located in the cavity, the upper end of the first spring presses against the inner wall of the upper valve body, and the lower end thereof is clamped in the first clamping groove of the valve plug and prompts the ball segment structure of the valve plug to press against or open the second exhaust hole; the first sealing ring is clamped in the second clamping groove and presses against the inner wall of the lower valve body around the second exhaust hole under the action of the first spring; The second sealing ring is stuck in the third slot; the pressure cover is provided with a fourth mounting hole, the fourth mounting hole is located below the first mounting hole of one of the sliders, and a retaining ring is extended upward around the fourth mounting hole; during installation, the top end of the upper valve body is inserted into the second mounting hole, the top end of the upper valve body slides and rises along the second mounting hole and extends out of the outside of the pressure cover, or the top end of the upper valve body slides and descends along the second mounting hole and retracts into the pressure cover; the lower end of the upper valve body passes through the first mounting hole, and the upper end of the lower valve body passes through the fourth mounting hole and the first mounting hole in sequence and is tightened with the upper valve body; the diameter of the annular brim is larger than the diameter of the first mounting hole, the diameter of the bottom of the lower valve body is larger than the diameter of the fourth mounting hole, and the second sealing ring is clamped between the bottom of the lower valve body and the pressure cover; when the safety valve is at rest, the fourth exhaust hole is located below the pressure cover and connected to the pot, the safety valve rises to the upper limit position, and the retaining ring of the fourth mounting hole presses against the fourth exhaust hole. The spherical structure of the valve plug can seal the second exhaust hole to create a pressurized environment. The valve plug opens the second exhaust hole to exhaust and relieve pressure in the pot. The diameter of the annular brim is larger than the diameter of the first mounting hole to prevent the upper valve body from flying out of the pot. The first sealing ring and the second sealing ring can prevent the second exhaust hole from leaking and maintain the pressure maintaining function.

[0014] The pressure cover is provided with a fifth mounting hole, in which a regulating valve assembly for adjusting the air pressure in the pot and exhausting the gas is installed; the regulating valve assembly comprises a regulating valve knob, a rotating shaft, a second spring, a valve core, a leak-proof rubber ring, a regulating valve housing, a regulating lower valve, a regulating valve sealing ring and a slag separating nut; a threaded column is provided at the lower end of the regulating lower valve, and the threaded column is hollow to form an air outlet, and the air outlet is connected to the upper and lower sides of the regulating lower valve; the threaded column of the regulating lower valve passes through the fifth mounting hole and the regulating valve sealing ring in turn and is locked on the pressure cover with the slag separating nut, and the slag separating nut is provided with an air vent, the upper side of the air vent is connected to the air outlet, and the lower side is connected to the pot; the regulating valve knob is on the lower side An open cylindrical structure with a cavity, wherein a special-shaped column is provided on the lower side of the inner tube, a protruding position is provided on the inner wall of the cylinder, a dial is provided on the outside of the cylindrical structure, and a third anti-slip pattern is provided on the top side of the regulating valve knob, and the third anti-slip pattern is formed by a plurality of grooves evenly arranged in parallel vertically and horizontally; a through hole is provided inside the rotating shaft, and the through hole penetrates the rotating shaft from top to bottom, and the lower part of the rotating shaft extends into the through hole to form a first undercut, and the outer periphery of the rotating shaft is provided with a first spiral line spirally arranged from top to bottom; a special-shaped hole is provided on the upper part of the through hole, and the shape of the special-shaped hole matches the shape of the special-shaped column; the valve core comprises a valve core body located on the upper side, a second guide column fixed on the valve core body, and a second undercut arranged on the upper part of the second guide column , and the bottom end of the valve core at the lower side; the second guide column of the valve core is inserted into the through hole and slides along it, and when it slides down to the lower limit, the first undercut buckles the second undercut; the upper part of the regulating valve shell is a hollow guide cylinder, and the lower end of the guide cylinder extends inward to form a third undercut, and the guide cylinder is connected with the lower space of the regulating valve shell through the hole formed by the third undercut; the side wall of the lower space of the regulating valve shell is provided with a third exhaust hole, and an air flow channel is formed between the regulating valve shell and the regulating lower valve, and the third exhaust hole connects the air flow channel with the outside of the pot; the inner wall of the guide cylinder is provided with a second spiral line spirally arranged from top to bottom, and the second spiral line matches the first spiral line; the inner wall of the guide cylinder A pair of first positioning slots are respectively provided on the outer periphery of a group of opposite side edges of the guide cylinder at the lower side of the wall, and the first positioning slots include a first vertical guide slot and a first transverse guide slot connected thereto; a pair of positioning slots are respectively provided on a group of opposite side walls of the inner wall of the lower space of the regulating valve housing; a pair of second positioning slots are respectively provided on a group of opposite side edges of the regulating lower valve, and the second positioning slots include a second vertical guide slot and a second transverse guide slot connected thereto; after the positioning slots of the regulating valve housing are aligned from the second vertical guide slot and pressed downward to the second transverse guide slot, the regulating valve housing is rotated so that the positioning slots are clamped into the inner side of the second transverse guide slot, so that the regulating valve housing and the regulating lower valve can be clamped;An annular protrusion is formed between the valve core body and the bottom end of the valve core, and the second spring is sleeved on the outer periphery of the valve core body, and the upper end of the second spring presses against the bottom of the first spiral line as the valve core moves, and the lower end of the second spring presses against the annular protrusion of the valve core. After the bottom end of the valve core passes through the hole formed by the third inverted buckle from top to bottom, the air outlet is closed or opened as the valve core moves up and down; an annular groove is provided on the outer periphery of the valve body on the upper side of the bottom end of the valve core, and the leak-proof rubber ring is sleeved in the annular groove. As the valve core moves upward to the limit position, the upper side surface of the leak-proof rubber ring presses against the lower side surface of the third inverted buckle. ; After the protruding position of the regulating valve knob is aligned from the first vertical guide groove and pressed downward to the first horizontal guide groove, the regulating valve knob is rotated so that the protruding position is inserted into the inner side of the first horizontal guide groove, so that the regulating valve knob and the guide cylinder of the regulating valve housing can be clamped; the special-shaped column is embedded in the special-shaped hole, the rotating shaft sleeve is on the outer periphery of the second guide column, the first spiral line cooperates with the second spiral line, the regulating valve knob rotates, and the special-shaped column forces the first spiral line of the rotating shaft to engage with the second spiral line of the guide cylinder to rotate and realize the lifting and lowering of the valve core. The regulating valve housing can be detachably installed on the regulating lower valve, and can realize the disassembly and assembly function, and can be rinsed and cleaned; according to the cooking of different ingredients, the valve core assembly controls the size of the pressure relief by adjusting the degree of rotation of the valve knob, or the closed pressure cooker realizes the pressure holding function, and the third exhaust hole, the air flow channel, and the air outlet hole form an exhaust channel to realize the pressure relief function. The handle of the regulating valve knob can be easily turned by the user, so as to adjust the regulating valve assembly and assist in pressure relief or pressure maintenance of the pot; the third anti-slip pattern can increase the friction with the hand. The cooperation of the first undercut and the second undercut can prevent the second guide column from falling off. The through hole provides guidance for the second guide column, and the second spring provides elastic force for the valve core, which pushes the valve core to move toward the air outlet, so that the valve core forms a pressure-carrying air valve function. The cooperation of the first spiral line and the second spiral line enables the rotating shaft to spiral along the inner wall of the guide cylinder to realize the lifting function. The two spiral lines are screwed together, so that the regulating valve assembly has an infinitely fine-tuning function. Within a certain speed range, it can continuously and arbitrarily make extremely small adjustments, so that the product has a more humane cooking control. The cooperation of the positioning card position and the second positioning card slot enables the regulating valve housing to be detachably buckled on the regulating lower valve, and the threaded column of the regulating lower valve is used to fix the regulating lower valve on the pressure cover. The special-shaped column matches the special-shaped hole, and the regulating valve knob can drive the rotating shaft to rotate along the guide cylinder to achieve lifting and lowering. The cooperation between the protruding clamping position and the first positioning clamping groove can realize the detachable installation of the regulating valve knob, and the sliding of the protruding clamping position along the first transverse guide groove enables the regulating valve knob to realize the rotation function. ;

[0015] Compared with the prior art, the advantages of the present invention are as follows: the pressure cooker can realize the opening and closing of the pot cover by one-handed control by adjusting the rotation of the knob assembly, and the operation is simple; the new opening and closing mechanism is set up, which can more firmly fasten the pot cover and the pot body, and can avoid safety accidents caused by pressure leakage due to the pot cover and the pot body not being able to be fastened; the setting of the step structure can enhance the pressure bearing capacity of the pot edge and prevent the dripping phenomenon caused by slight defects in the sealing ring; the matching mode of the starting level and the outer diameter of the pressure cover is embedded, which can facilitate the user to quickly and conveniently cover the pressure cover; when the safety valve is blocked and the safety device releases pressure, water vapor is sprayed in a vertical direction. Due to the setting of the pressure ring, it can play a protective role, reduce accidental injuries to personnel, and prevent the pot body from rolling over when spraying water to cause damage to the stove; the vertical spraying of water vapor can facilitate the rapid suction and exhaust of the range hood, and reduce the pollution of food particles to the kitchen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0017] Figure 2 It is a cross-sectional view of an embodiment of the present invention cut along a longitudinal direction;

[0018] Figure 3 A top view of an embodiment of the present invention;

[0019] Figure 4 It is a cross-sectional view of an embodiment of the present invention cut longitudinally along the side ear direction;

[0020] Figure 5 is a cross-sectional view of an embodiment of the present invention taken along another longitudinal direction;

[0021] Figure 6 for Figure 5 The partial enlarged view of the C in the middle is an invention;

[0022] Figure 7 This is a schematic diagram of the structure of an embodiment of the present invention without the knob assembly;

[0023] Figure 8 It is a cross-sectional view of a pot body cut along the longitudinal direction according to an embodiment of the present invention;

[0024] Fig. 9 It is a schematic diagram of the structural decomposition of an embodiment of the present invention;

[0025] Fig.10 It is a schematic diagram of the structural decomposition of the knob assembly and the mounting panel according to an embodiment of the present invention;

[0026] Fig.11 This is a schematic structural diagram of the assembly of a pressure cover and a pressure ring according to an embodiment of the present invention;

[0027] Fig.12 is a top view of a pressure cover according to an embodiment of the present invention;

[0028] Fig.13 It is a schematic diagram of the position of the safety device on the pressure cover when the safety device is a convex surface according to an embodiment of the present invention;

[0029] Fig.14 It is a schematic diagram of the position of the safety device on the pressure cover when the safety device is a venting seam in an embodiment of the present invention;

[0030] Fig.15 It is a schematic diagram of the position of the safety device on the pressure cover when the safety device is a vent hole in an embodiment of the present invention;

[0031] Fig.16 A top view of the assembly of the pressure cover and the pressure ring according to an embodiment of the present invention;

[0032] Fig.17 A top view of a pot mouth sealing ring according to an embodiment of the present invention;

[0033] Fig.18 for Fig.17 Middle DD section view;

[0034] Fig.19 A top view of an installation panel according to an embodiment of the present invention;

[0035] Fig. 20 for Fig.19 Middle EE section view;

[0036] Fig.21 A three-dimensional diagram of an installation panel according to an embodiment of the present invention;

[0037] Fig. 22 This is a schematic diagram of the structure of a pressure ring according to an embodiment of the present invention;

[0038] Fig.23 is a top view of a knob according to an embodiment of the present invention;

[0039] Fig.24 This is a schematic diagram of the structure of the lower side of the knob of an embodiment of the present invention;

[0040] Fig.25 This is a schematic structural diagram of the lower side of the knob fixing member according to an embodiment of the present invention;

[0041] Fig.26 This is a front view of a safety valve according to an embodiment of the present invention;

[0042] Fig. 27 for Fig.26 Middle FF section view;

[0043] Fig.28 It is a three-dimensional diagram of a safety valve according to an embodiment of the present invention;

[0044] Fig.29This is a schematic diagram of the structure decomposition of a safety valve according to an embodiment of the present invention;

[0045] Fig.30 It is a schematic diagram of the structural decomposition of a regulating valve assembly according to an embodiment of the present invention;

[0046] Fig.31 This is a schematic structural diagram of the lower side of the regulating valve knob according to an embodiment of the present invention;

[0047] Fig.32 It is a structural schematic diagram of a rotating shaft according to an embodiment of the present invention;

[0048] Fig.33 This is a schematic diagram of the structure of the embodiment of the present invention in the lower side direction of the rotating shaft;

[0049] Fig.34 This is a schematic diagram of the structure of the valve core according to an embodiment of the present invention;

[0050] Fig.35 This is a schematic structural diagram of a regulating valve housing according to an embodiment of the present invention;

[0051] Fig.36 This is a schematic structural diagram of the lower side of the housing of the regulating valve according to an embodiment of the present invention;

[0052] Fig.37 A cross-sectional view of a regulating valve housing cut along the longitudinal direction according to an embodiment of the present invention;

[0053] Fig.38 This is a schematic diagram of the structure of adjusting the lower valve according to an embodiment of the present invention;

[0054] Fig.39 It is a schematic diagram of the structure for adjusting the lower side direction of the lower valve according to an embodiment of the present invention.

[0055] Meanings of reference numerals in the figure: 01, knob fixing member; 011, fixing column; 012, concave-convex groove; 013, second anti-skid pattern; 02, hand-feel column; 03, tension spring; 04, knob; 041, positioning hole; 042, second center hole; 043, third mounting hole; 05, mounting panel; 051, guide long hole; 052, second mounting hole; 053, first center hole; 054, slide groove; 055, mounting groove; 06, regulating valve knob; 061, special-shaped column; 062, protruding position; 063, dial handle; 064, third anti-skid pattern; 07, rotating shaft; 071 , through hole; 072, first undercut; 073, first spiral line; 074, special-shaped hole; 08, second spring; 09, valve core; 091, valve core body; 092, second guide column; 093, second undercut; 094, bottom of valve core; 095, annular protrusion; 096, annular groove; 10, leak-proof rubber ring; 11, regulating valve housing; 111, guide cylinder; 112, third undercut; 113, third exhaust hole; 114, second spiral line; 115, first vertical guide groove; 116, first horizontal guide groove; 117, positioning position; 12, regulating lower valve; 121, screw Column; 122, air outlet; 123, second vertical guide groove; 124, second transverse guide groove; 13, regulating valve sealing ring; 14, slag separation nut; 141, air vent; 15, upper valve body; 151, first exhaust hole; 152, annular brim; 16, second sealing ring; 17, lower valve body; 171, second exhaust hole; 172, third clamping groove; 173, fourth exhaust hole; 18, valve plug; 181, first clamping groove; 182, second clamping groove; 19, first sealing ring; 20, first spring; 21, pressure ring; 211, slider; 212, first guide column; 21 3. Long hole; 214. First mounting hole; 22. Pressure cover; 221. Inward bending structure; 222. Third center hole; 223. Positioning column; 224. Fourth mounting hole; 225. Fifth mounting hole; 23. Pot mouth sealing ring; 231. Embedding part; 232. Sealing part; 24. Third sealing ring; 25. Center nut; 26. Side ear; 261. First anti-slip pattern; 27. Screw; 28. Guard ring; 29. ​​Ear seat; 30. Pot body; 301. Starting position; 302. Retaining edge; 31. Safety device; 311. Protruding surface; 312. Air relief seam; 313. Pressure relief hole. DETAILED DESCRIPTION

[0056] The content of the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0057] Example

[0058] See also Figures 1 to 39The invention discloses a pressure cooker with a novel opening and closing structure, comprising a pot body 30, side ears 26 and a pot cover assembly, wherein the pot cover assembly is placed on the pot body 30, the side ears 26 are installed on the side wall of the pot body 30, and the pot mouth of the pot body 30 extends outward to form a step structure, wherein the step structure comprises a step position 301 and a retaining edge 302, wherein the step position 301 is arranged horizontally, the lower end of the retaining edge 302 is connected to the outer end of the step position 301, and the inner end of the step position 301 is connected to the pot body 30; the pot cover assembly comprises a pressure cover 22, a safety valve for exhausting gas, an opening and closing device clamped on the pressure cover 22 to lock or release the pressure cover 22 and the pot body 30, and a knob assembly for locking or releasing the pressure cover 22 and the pot body 30 by rotating the opening and closing device; the outer edge of the pressure cover 22 is placed on the step position 301, and the outer periphery of the pressure cover 22 is located within the retaining edge 302.

[0059] The opening and closing device can fasten or loosen the pressure cover 22 and the pot body 30 under the control of the knob assembly, and the cover can be opened and closed by one hand. The setting of the level structure can enhance the pressure bearing capacity of the pot edge and prevent the dripping phenomenon caused by slight defects in the sealing ring, prevent water from dripping on the stove, and the liquid droplets on the cover edge and the pot edge will flow back into the pot.

[0060] The outer edge of the pressure cover 22 is bent inward to form an inner curved structure 221, and a pot mouth sealing ring 23 is installed in the inner curved structure 221. The outer diameter of the pot mouth sealing ring 23 located at the inner curved structure 221 is an embedded part 231, and the lower side of the pot mouth sealing ring 23 is a sealing part 232. The upper side of the embedded part 231 extends obliquely toward the inner side of the pressure cover 22, and the sealing part 232 extends obliquely downward from the connection. When the pressure cover 22 is closed, the sealing part 232 of the pot mouth sealing ring 23 presses against the starting position 301. The inner curved structure 221 can be used to clamp the embedded part 231 of the pot mouth sealing ring 23 to achieve the installation function; the sealing part 232 presses against the starting position 301 to enhance the sealing function. The setting of the pot mouth sealing ring 23 can be used to seal the pressure cooker and has the function of maintaining pressure. Compared with the traditional pressure cooker, the starting position 301 of the pot body 30 is in direct contact with the lower side of the pot mouth sealing ring 23, which plays a great role in safety and enhances safety. Conventional pressure cookers will burst when the pressure is too high, and the sealing ring will be deformed, so that water will leak out of the pot and drip onto the stove. The arrangement of this embodiment can avoid this situation and can also prevent water from dripping onto the stove. The liquid in the pot cover will flow back into the pot at the starting position 301.

[0061] The opening and closing device includes at least two opening and closing mechanisms, which include a pressure ring 21, a slider 211 and a first guide column 212; the slider 211 is provided with a first mounting hole 214 and an elongated hole 213, the first mounting hole 214 is connected to the elongated hole 213, the pressure ring 21 is arranged at the outer end of the slider 211, and the first guide column 212 is respectively arranged at the inner end of the slider 211; the pressure cover 22 is provided with a mounting panel 05, the middle part of the mounting panel 05 is recessed downward to form a mounting groove 055, and the mounting groove 055 is provided with a guide elongated hole 213. The mounting panel 05 is provided with a second mounting hole 052 for mounting the safety valve, and a slide groove 054 is provided on the lower side of the mounting panel 05; the knob assembly includes a knob 04, a knob fixing member 01 and a center nut 25, the knob 04 is provided with a second center hole 042, a positioning hole 041 and a third mounting hole 043, and a fixing column 011 is provided on the lower side of the knob fixing member 01; the number of the guide long holes 051 matches the number of the pressure ring 21, and the number of the third mounting holes 043 matches the number of the guide long holes 051 The number of the pressure rings 21 matches; a third center hole 222 is provided in the center of the pressure cover 22, and a positioning column 223 is provided on the upper side of the pressure cover 22. The number of the positioning columns 223 matches the number of the pressure rings 21 and the positions are relative; the pressure ring 21 is placed on the pressure cover 22, and the elongated hole 213 is sleeved on the positioning column 223; the mounting panel 05 is mounted on the pressure cover 22, and the pressure ring 21 is clamped between the pressure cover 22 and the mounting panel 05, and the slider 211 is mounted in the slide groove 054 and can slide along it; the knob 04 is mounted in the mounting groove 055, The first guide column 212 passes through the guide long hole 051 and is inserted into the third installation hole 043; the fixed column 011 passes through the second center hole 042, the first center hole 053, and the third center hole 222 from top to bottom in sequence and is tightened with the center nut 25. The outer periphery of the fixed column 011 between the center nut 25 and the pressure cover 22 is sleeved with a third sealing ring 24; the knob 04 is turned, and the third installation hole 043 forces the first guide column 212 to slide along the guide long hole 051, so that the pressure ring 21 locks or loosens the pressure cover 22 and the pot body 30. When the pressure cooker adopts two opening and closing mechanisms, the pot cover and the pot body 30 can be fastened in a buckled manner. When more than two opening and closing mechanisms are used, the pot cover and the pot body 30 can be fastened more firmly. The setting of the positioning column 223 provides sliding orientation and support for the long hole 213. The installation panel 05 can store the slider 211 and the first guide column 212, and the slide groove 054 forms a channel for the slider 211 to slide.

[0062] The opening and closing device is provided with three opening and closing mechanisms, which are located on the same plane and form an angle of 120 degrees between each other; the first side of the inner end of the slider 211 extends outwardly obliquely, the slider 211 is a gradually reduced diameter structure from the middle to the inner end, and the second side of the slider 211 extends from the middle of the slider 211 to the inner end in an arc-shaped oblique direction to the first side of the inner end of the slider 211; the first guide column 212 of the inner end of the three sliders 211 is located below the mounting groove 055, the first side of the inner end of the slider 211 located in the middle is close to the second side of the slider 211 on the left side and can move along the arc-shaped oblique direction of the side, and the first side of the inner end of the slider 211 located on the right side is close to the second side of the middle slider 211 and can move along the arc-shaped oblique direction of the side. The arrangement of the three opening and closing mechanisms can make the pot cover and the pot body 30 buckle more tightly. The structural arrangement on both sides of the inner end of the slider 211 can provide sliding space for adjacent sliders 211, thereby realizing the outward extension or inward retraction of the slider 211.

[0063] The knob assembly also includes a hand-feeling column 02 and a tension spring 03; a sleeve is provided on the lower side of the fixing column 011 and the knob fixing part 01, the fixing column 011 is located in the sleeve, a circle of concave-convex grooves 012 are provided on the lower side of the sleeve, the tension spring 03 and the hand-feeling column 02 are placed in the positioning hole 041 in sequence, the lower end of the tension spring 03 presses against the bottom of the positioning hole 041, and its upper end presses against the lower end of the hand-feeling column 02, and the upper end of the hand-feeling column 02 presses against the concave-convex groove 012. The matching arrangement of the concave-convex groove 012, the hand-feeling column 02 and the tension spring 03 makes the knob fixing part 01 vibrate and emit a beeping sound when the knob 04 is turned to remind the user that it is turning to open and close or perform the exhaust function.

[0064] A safety device 31 is provided on the cover edge of the pressure cover 22 for deforming and displacing the pot mouth sealing ring 23 when the pressure in the pot exceeds a set value. The safety device 31 is located below the pressure ring 21 .

[0065] The safety device 31 is a protruding surface 311 formed by the cover surface of the pressure cover 22 from bottom to top, and the protruding surface 311 is aligned with the upper side of the embedded part 231 of the pot mouth sealing ring 23; or, the safety device 31 is a venting slit 312 opened on the cover surface of the pressure cover 22, and the venting slit 312 is aligned with the upper side of the embedded part 231 of the pot mouth sealing ring 23; or, the safety device 31 is a pressure relief hole 313 opened on the cover surface of the pressure cover 22, and the pressure relief hole 313 is aligned with the upper side of the embedded part 231 of the pot mouth sealing ring 23. When the pressure in the pot reaches the set value, the pot mouth sealing ring 23 will shift (deform) toward the safety device 31, and the pressure will be relieved at this time; the safety device 31 is arranged below the pressure ring 21 (i.e., inside the pressure ring 21). When the pressure is relieved, the pressure ring 21 blocks the direct spray of the air pressure (buffering effect), which plays a protective role. The water vapor will not be directly sprayed to people, but will be emitted from the pressure ring 21 to avoid scalding. The three types of settings, namely the protruding surface 311, the air relief seam 312 and the air relief hole, are all intended to form a space for the deformation or displacement of the pot mouth sealing ring 23. The pot mouth sealing ring 23 deforms and translates, causing the pressure in the pot to leak out from the safety device 31, thereby realizing the function of auxiliary exhaust and pressure relief.

[0066] The upper side of the side ear 26 is provided with a first anti-slip pattern 261, which is formed by a plurality of grooves evenly arranged in parallel in both directions; the upper side of the knob fixing member 01 is provided with a second anti-slip pattern 013, which is formed by a plurality of grooves evenly arranged in both directions. The first anti-slip pattern 261 on the side ear 26 is provided to facilitate the user to hold the pressure cooker firmly and prevent the hand from slipping and falling off. The second anti-slip pattern 013 can increase the friction with the hand, making the grip more stable.

[0067] The safety valve comprises an upper valve body 15, a lower valve body 17, a first spring 20, a valve plug 18, a first sealing ring 19 and a second sealing ring 16; the lower end of the upper valve body 15 is connected to the upper end of the lower valve body 17 by threads, and a cavity is provided between the two. The top of the upper valve body 15 is provided with a first exhaust hole 151 connected to the cavity, and the lower part thereof is provided with a raised annular brim 152; one end of the valve plug 18 is respectively provided with a first groove 181 and a second groove 182 surrounding it, and the other end thereof is a spherical segment structure; the bottom of the lower valve body 17 is provided with a second exhaust hole 171 connected to the cavity The bottom of the valve body 17 is provided with a third slot 172 surrounding the lower valve body 17, and the outer periphery of the lower valve body 17 is provided with a plurality of fourth exhaust holes 173 communicating with the cavity, and the fourth exhaust holes 173 are located above the third slot 172; the valve plug 18 is located in the cavity, the upper end of the first spring 20 presses against the inner wall of the upper valve body 15, and the lower end of the first spring 20 is clamped in the first slot 181 of the valve plug 18 and causes the ball segment structure of the valve plug 18 to press against or open the second exhaust hole 171; the first sealing ring 19 is clamped in the second slot 182 and presses against the periphery of the second exhaust hole 171 under the action of the first spring 20 The inner wall of the lower valve body 17; the second sealing ring 16 is stuck in the third clamping groove 172; the pressure cover 22 is provided with a fourth mounting hole 224, the fourth mounting hole 224 is located below the first mounting hole 214 of one of the sliders 211, and the fourth mounting hole 224 extends upward to form a retaining ring; during installation, the top end of the upper valve body 15 is inserted into the second mounting hole 052, the top end of the upper valve body 15 slides and rises along the second mounting hole 052 and extends out of the pressure cover 22, or the top end of the upper valve body 15 slides and descends along the second mounting hole 052 and retracts into the pressure cover 22; the lower end of the upper valve body 15 The end passes through the first mounting hole 214, and the upper end of the lower valve body 17 passes through the fourth mounting hole 224 and the first mounting hole 214 in sequence and is then tightened with the upper valve body 15; the diameter of the annular brim 152 is larger than the diameter of the first mounting hole 214, the diameter of the bottom of the lower valve body 17 is larger than the diameter of the fourth mounting hole 224, and the second sealing ring 16 is clamped between the bottom of the lower valve body 17 and the pressure cover 22; when the safety valve is at rest, the fourth exhaust hole 173 is located below the pressure cover 22 and is connected to the pot, the safety valve rises to the upper limit position, and the retaining ring of the fourth mounting hole 224 presses against the fourth exhaust hole 173. The ball-shaped structure of the valve plug 18 forms a seal on the second exhaust hole 171 to create a pressurized environment. The valve plug 18 opens the second exhaust hole 171 to exhaust and relieve pressure in the pot. The diameter of the annular brim 152 is larger than the diameter of the first mounting hole 214, which can prevent the upper valve body 15 from flying out of the pot. The first sealing ring 19 and the second sealing ring 16 can prevent air leakage from the second exhaust hole 171 and maintain the pressure-maintaining function. When the safety valve is at rest, the air pressure in the pot can enter the cavity from the fourth exhaust hole 173 and be discharged from the first exhaust hole 151 of the upper valve body 15 to achieve pressure relief. When the pressure in the pot is too high, the valve plug 18 is pushed open, the safety valve rises, and the retaining ring presses against the fourth exhaust hole 173 to prevent the air pressure from flowing out horizontally and discharge the airflow to the first exhaust hole 151.

[0068] The pressure cover 22 is provided with a fifth mounting hole 225, in which a regulating valve assembly for adjusting the air pressure in the pot and exhausting the gas is installed; the regulating valve assembly comprises a regulating valve knob 06, a rotating shaft 07, a second spring 08, a valve core 09, a leak-proof rubber ring 10, a regulating valve housing 11, a regulating lower valve 12, a regulating valve sealing ring 13 and a slag separating nut 14; a threaded column 121 is provided at the lower end of the regulating lower valve 12, the threaded column 121 is hollow to form an air outlet 122, and the air outlet 122 communicates with the upper and lower sides of the regulating lower valve 12; the threaded column 121 of the regulating lower valve 12 passes through the fifth mounting hole 225 and the regulating valve sealing ring 13 in sequence and is then locked on the pressure cover 22 with the slag separating nut 14, and the slag separating nut 14 is provided with The air hole 141 is connected to the air outlet 122 on its upper side, and is connected to the inside of the pot on its lower side; the regulating valve knob 06 is a cylindrical structure with an opening on the lower side and a cavity, a special-shaped column 061 is provided on the lower side of the cylinder, a protruding position 062 is provided on the inner wall of the cylinder, a dial 063 is provided on the outside of the cylindrical structure, a third anti-slip pattern 064 is provided on the top side of the regulating valve knob 06, and the third anti-slip pattern 064 is formed by a plurality of grooves evenly arranged in parallel vertically and horizontally; a through hole 071 is provided inside the rotating shaft 07, and the through hole 071 penetrates the rotating shaft 07 from top to bottom, the lower part of the rotating shaft 07 extends into the through hole 071 to form a first undercut 072, and the outer periphery of the rotating shaft 07 is provided with a first spiral line 073 spirally arranged from top to bottom; the through hole A special-shaped hole 074 is provided on the upper part of 071, and the shape of the special-shaped hole 074 matches the shape of the special-shaped column 061; the valve core 09 includes a valve core body 091 located on the upper side, a second guide column 092 fixed on the valve core body 091, a second undercut 093 arranged on the upper part of the second guide column 092, and a valve core bottom end 094 located on the lower side; the second guide column 092 of the valve core 09 is inserted into the through hole 071 and slides along it, and when it slides down to the lower limit, the first undercut 072 buckles the second undercut 093; the upper part of the regulating valve housing 11 is a hollow guide cylinder 111, and the lower end of the guide cylinder 111 extends inward to form a third undercut 112, and the guide cylinder 111 is connected to the regulating valve through the hole formed by the third undercut 112 The lower space of the housing 11 is connected; a third exhaust hole 113 is provided on the side wall of the lower space of the regulating valve housing 11, and an air flow channel is formed between the regulating valve housing 11 and the regulating lower valve 12, and the third exhaust hole 113 connects the air flow channel with the outside of the pot; a second spiral line 114 spirally arranged from top to bottom is provided on the inner wall of the guide cylinder 111, and the second spiral line 114 matches the first spiral line 073; a pair of first positioning card grooves are respectively provided on the outer periphery of a pair of side edges of the guide cylinder 111 on the lower side of the inner wall of the guide cylinder 111, and the first positioning card groove includes a first vertical guide groove 115 and a first horizontal guide groove 116 connected thereto; a pair of positioning card positions 117 are respectively provided on a pair of side walls of the inner wall of the lower space of the regulating valve housing 11;A pair of second positioning slots are respectively provided on a pair of side edges of the regulating lower valve 12, and the second positioning slots include a second vertical guide slot 123 and a second transverse guide slot 124 connected thereto. A hook is provided at the intersection of the upper side wall of the second transverse guide slot 124 and the second vertical guide slot 123 to prevent the positioning slot 117 from being easily withdrawn. The positioning slot 117 is rotated out in the downward pressure state to break away from the constraint of the hook; the positioning slot 117 of the regulating valve housing 11 is aligned with the second vertical guide slot 123 and pressed downward to After the second transverse guide groove 124 is inserted, the regulating valve housing 11 is rotated to make the positioning clamping position 117 clamped into the inner side of the second transverse guide groove 124, so that the regulating valve housing 11 and the regulating lower valve 12 can be clamped; an annular protrusion 095 is formed between the valve core body 091 and the bottom end 094 of the valve core, and the second spring 08 is sleeved on the outer periphery of the valve core body 091, and its upper end presses against the bottom of the first spiral line 073 as the valve core 09 moves, and its lower end presses against the annular protrusion 095 of the valve core 09, and the bottom end 094 of the valve core passes through the second transverse guide groove 124 from top to bottom. The hole formed by the three undercuts 112 closes or opens the air outlet 122 as the valve core 09 moves up and down; an annular groove 096 is provided on the outer periphery of the valve body on the upper side of the bottom end 094 of the valve core, and the leak-proof rubber ring 10 is sleeved in the annular groove 096. As the valve core 09 moves upward to the limit position, the upper side of the leak-proof rubber ring 10 presses against the lower side of the third undercut 112; after the protruding position 062 of the regulating valve knob 06 is aligned from the first vertical guide groove 115 and pressed downward to the first horizontal guide groove 116, the regulating valve knob 06 is rotated , the protruding clamping position 062 is clamped into the inner side of the first transverse guide groove 116, so that the regulating valve knob 06 and the guide cylinder 111 of the regulating valve housing 11 can be clamped; the special-shaped column 061 is embedded in the special-shaped hole 074, the rotating shaft 07 is sleeved on the outer periphery of the second guide column 092, the first spiral line 073 cooperates with the second spiral line 114, the regulating valve knob 06 rotates, and the special-shaped column 061 forces the first spiral line 073 of the rotating shaft 07 to engage with the second spiral line 114 of the guide cylinder 111 to rotate and realize the lifting and lowering of the valve core 09. The regulating valve housing 11 can be detachably installed on the regulating lower valve 12, and can realize the disassembly and assembly function, and can be rinsed and cleaned; according to the cooking of different ingredients, the valve core 09 component controls the size of the pressure relief by adjusting the rotation degree of the valve knob 06, or the closed pressure cooker realizes the pressure holding function, and the third exhaust hole 113, the air flow channel, and the air outlet hole 122 form an exhaust channel to realize the pressure relief function. The handle 063 of the regulating valve knob 06 can be easily turned by the user to adjust the regulating valve assembly and assist in pressure relief or pressure maintenance of the pot;The third anti-slip pattern 064 is provided to increase the friction with the hand. The cooperation of the first undercut 072 and the second undercut 093 can prevent the second guide column 092 from falling off. The through hole 071 provides guidance for the second guide column 092, and the second spring 08 provides elastic force for the valve core 09, pushing the valve core 09 to move toward the air outlet 122, so that the valve core 09 forms a pressure-carrying air valve function. The cooperation of the first spiral line 073 and the second spiral line 114 enables the rotating shaft 07 to spiral along the inner wall of the guide cylinder 111 to realize the lifting function. The two spiral lines are screwed together, which can enable the regulating valve assembly to have a stepless fine-tuning function. Within a certain speed range, it can continuously and arbitrarily make extremely small adjustments, so that the product has a more humane cooking control. The cooperation of the positioning card position 117 and the second positioning card slot enables the regulating valve housing 11 to be detachably buckled on the regulating lower valve 12, and the threaded column 121 of the regulating lower valve 12 is used to fix the regulating lower valve 12 on the pressure cover 22. The special-shaped column 061 matches the special-shaped hole 074, and the regulating valve knob 06 can drive the rotating shaft 07 to rotate along the guide cylinder 111 to achieve lifting and lowering. The cooperation between the protruding clamping position 062 and the first positioning clamping groove can realize the detachable installation of the regulating valve knob 06, and the sliding of the protruding clamping position 062 along the first transverse guide groove 116 enables the regulating valve knob 06 to achieve the rotation function. The third undercut 112 limits the movement range of the valve core 09 to prevent it from falling off. The setting of the leakproof sealing ring can prevent water vapor from running into the valve core 09 and the guide cylinder 111, ensuring the hygiene of the inside of the regulating valve housing 11. In this embodiment, the upper side wall of the first transverse guide groove 116 is provided with a corrugated concave-convex structure, which is conducive to the positioning and clamping of the protruding clamping position 062. ;

[0069] In this embodiment, the upper side of the regulating lower valve 12 around the air outlet 122 bulges upward to form an arc surface of the air outlet 122, and the valve core bottom end 094 of the valve core 09 forms an arc-shaped convex surface that matches and fits the arc surface of the air outlet 122. The arc-shaped convex surface is conducive to the sealing of the valve core bottom end 094 to the air outlet 122, and has a good sealing effect. The lower end of the first undercut 072 is provided with an inclined surface, which is conducive to guiding the guide column when it is inserted, and can expand the hole formed by the first undercut 072, which is conducive to the insertion of the guide column into the through hole 071. The upper side of the regulating valve housing 11 is provided with a first-level mark, a second-level mark, and a third-level mark, which respectively mark the three states of the protruding position 062 at the intersection of the first vertical guide groove 115 and the first transverse guide groove 116, when it rotates to half of the path of the first transverse guide groove 116, and when it rotates to the end of the path of the first transverse guide groove 116, so as to guide the user to quickly rotate the regulating valve knob 06 to the corresponding position, so as to loosen or press the air outlet 122. The bottom of the outer periphery of the regulating valve housing 11 is provided with a turning indicator mark for indicating the direction of rotation, which is convenient for the user to rotate. The regulating valve housing 11 is a tapered structure from bottom to top, and its cross-section cut along the longitudinal direction is conical. The regulating valve housing 11 is provided with three third exhaust holes 113, and the three third exhaust holes 113 are radially distributed on the conical side wall of the regulating valve housing 11. The regulating valve housing 11 with a tapered structure can make water vapor spray out obliquely from the third exhaust hole 113 to avoid direct spraying and prevent burns. The hemispherical portion at the bottom of the slag separating nut 14 is provided with a cross groove that is crisscrossed and penetrates the slag separating nut 14, and the cross groove is connected to the air vent 141. The setting of the cross groove can prevent large particles from entering the air outlet 122, thereby realizing the slag separating function.

[0070] In this embodiment, the connection structure between the pot body 30 and the side ear 26 includes an ear seat 29, a protective ring 28, and a screw 27; the ear seat 29 is welded to the side of the pot body 30, and the side ear 26 is locked on the ear seat 29 by passing the screw 27, and the outer periphery of the ear seat 29 is covered with a protective ring 28, and the protective ring 28 is clamped between the side ear 26 and the pot body 30.

[0071] Assembly of the upper components of the pressure cover 22 of this embodiment:

[0072] 1) Place the pot mouth sealing ring 23 in the pressure cover 22;

[0073] 2) Place the three pressure rings 21 on the surface of the pressure cover 22 as required, and fit the elongated holes 213 of the pressure rings 21 over the positioning posts 223 of the pressure cover 22;

[0074] 3) Insert the safety valve into the fourth mounting hole 224 and the first mounting hole 214 as required;

[0075] 4) Place the mounting panel 05 on the surface of the pressure cover 22, and make the safety valve concentric with the fourth mounting hole 224; the first guide column 212 in the pressure ring 21 passes through the long guide hole 051 in the mounting panel 05; the slider 211 is stuck on the slide groove 054 of the mounting panel 05;

[0076] 5) Place the knob 04 in the mounting groove 055 of the mounting panel 05, and allow the three special-shaped holes 074 to penetrate into the first guide posts 212 of the slider 211 respectively;

[0077] 6) Place the tension spring 03 and the hand-feel column 02 into the positioning hole 041 of the knob 04 in order;

[0078] 7) Pass the fixing column 011 through the second center hole 042 , the first center hole 053 , and the third center hole 222 and then fix it with the center nut 25 .

[0079] Assembly of regulating valve assembly:

[0080] 1) Sleeve the second spring 08 on the outer periphery of the second guide column 092 of the valve core 09, and make the first undercut 072 of the rotating shaft 07 pass through the undercut shaft of the second undercut 093, so that the valve core 09 and the rotating shaft 07 form a whole;

[0081] 2) Rotate the valve core 09 from top to bottom into the guide cylinder 111 of the regulating valve housing 11, and put the leak-proof rubber ring 10 into the annular groove 096 of the valve core 09.

[0082] 3) Align the protruding position 062 of the regulating valve knob 06 with the first vertical guide groove 115 of the regulating valve housing 11, so that the special-shaped column 061 of the regulating valve knob 06 is concentric with the special-shaped hole 074 of the rotating shaft 07; slide the regulating valve knob 06 downward to the intersection of the first vertical guide groove 115 and the first transverse guide groove 116, press it down lightly and then rotate it into the first transverse guide groove 116.

[0083] 4) Align the positioning position 117 of the regulating valve housing 11 with the second vertical guide groove 123 of the regulating lower valve 12, slide down to the intersection of the second vertical guide groove 123 and the second transverse guide groove 124, press down slightly and then rotate in the specified direction into the second transverse guide groove 124, and tighten it at the end of the second transverse guide groove 124.

[0084] 5) Pass the threaded column 121 of the regulating lower valve 12 through the surface of the pressure cover 22, and tighten it to the pressure cover 22 with the slag isolation nut 14 from the inside of the cover.

[0085] The working principle of this embodiment:

[0086] 1) Rotate the knob 04 left or right to open or close the pressure ring 21.

[0087] 2) Put the pressure cover 22 onto the pressure cooker body 30, rotate the knob 04, and the pressure ring 21 is retracted under the drive of the first guide column 212 and the slider 211 on the pressure ring 21 and the guide long hole 051 of the mounting panel 05, so that the pressure ring 21 is stuck with the starting position 301 of the pot body 30.

[0088] 3) Place the pot on a stove to heat, rotate the knob 04, the pressure ring 21 and the pot body 30 are stuck at the starting position 301, and the pressure cover 22 and the pot body 30 are sealed under the action of the pot mouth sealing ring 23. When the pressure in the pot exceeds the set pressure of the safety valve, the air pressure in the pot is automatically discharged from the safety valve.

[0089] 4) Place the pot on a stove to heat, rotate the knob 04, the pressure ring 21 and the starting position 301 of the pot body 30 are stuck, and the lid and the pot are sealed under the action of the pot mouth sealing ring 23. When the pressure in the pot exceeds the set pressure of the safety valve, the air pressure in the pot is automatically discharged from the safety valve with a sharp sound.

[0090] 5) Place it on the stove to heat, rotate the knob 04, the pressure ring 21 is stuck with the starting position 301 of the pot body 30, and the lid and the pot are sealed under the action of the pot mouth sealing ring 23. When the pressure in the pot exceeds the pressure set by the safety window, the outer diameter R angle embedded part 231 of the pot mouth sealing ring 23 (the upper and lower sides of the end of the pot mouth sealing ring 23 and the embedded part 231 form an R angle structure) will automatically reverse under the action of the safety device 31 (protruding surface 311 or air release seam 312 or pressure release hole 313) set by the pressure cover 22, driving the sealing part 232 in contact with the starting position 301 of the pot body 30 to automatically turn out of the pot, and the air pressure in the pot is automatically discharged from the turned-out position. After the pot mouth sealing ring 23 turns out to release pressure, it cannot automatically return to the original state, so it will not increase pressure even when heated by a heat source, and prevent accidents.

[0091] 6) When the pressure in the pot is greater than 4kPa, the safety valve automatically rises, and the upper valve body 15 extends out of the mounting panel 05, warning that there is pressure in the pot. When the pressure in the pot reaches more than 140kPa, the valve plug 18 automatically rises to exhaust and emits a sound to warn that the pressure in the pot is too high, and informs the user to turn off the heat source or open the regulating valve assembly to exhaust and release pressure. The pressure setting value of the pressure in the pot is set to 220 to 280kPa. When the pressure in the pot rises to this numerical range, the pot mouth sealing ring 23 will automatically move out in the safety device 31, and the gas will be discharged from the air release seam 312 or the pressure relief hole 313 to achieve the pressure relief function. When the safety device 31 is a convex surface 311, the pot mouth sealing ring 23 moves toward it, so that the sealing part 232 of the pot mouth sealing ring 23 at this place is separated from the starting position 301, and the gas can be discharged from the starting position 301 to achieve pressure relief. The safety device 31 reduces the pressure in the pot to below 20 kPa within 60 seconds and the pressure in the pot will not rise again without manual restoration.

[0092] The innovative features of this embodiment include the following:

[0093] 1) The pot body is a step pot: its function is to enhance the pressure bearing capacity of the pot edge and to prevent the dripping phenomenon caused by slight defects in the pot mouth sealing ring 23.

[0094] 2) The safety window of the pressure cover 22 (i.e. the safety device 31, which is the protruding surface 311 or the air release slot 312 or the pressure release hole 313) is designed with a concave-convex surface, which serves to keep the cover intact and enhance the rigidity of the cover.

[0095] 3) The pressure cover 22 cooperates with the pot body 30. The cooperation between the pot body 30 starting position 301 and the outer diameter of the pressure cover 22 is embedded, so that the user can quickly and conveniently cover the pressure cover 22.

[0096] 4) The pressure cover 22 and the stepping position 301 of the pot body 30 are embedded. When the safety valve is blocked and the window pressure is released (i.e., the air release slit 312 or the pressure release hole 313), the water vapor is ejected in a vertical direction (80 to 100 degrees): ① This embodiment reduces accidental injuries to personnel; prevents the pot body from rolling over when the gas is ejected and causing damage to the stove. ② Because the water vapor is basically ejected in a vertical direction, it is convenient for the smoke exhaust machine to quickly absorb and exhaust, reducing the pollution of food particles to the kitchen.

[0097] The above detailed description is a specific description of a feasible embodiment of the present invention. The embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not deviate from the present invention should be included in the patent scope of this case.

Claims

1. A pressure cooker with a novel opening and closing structure, comprising a pot body, side ears and a pot cover assembly, wherein the pot cover assembly is placed on the pot body, and the side ears are installed on the side wall of the pot body, characterized in that: The pot body extends outward from the pot mouth to form a step structure, the step structure includes a step position and a rib, the step position is horizontally arranged, the lower end of the rib is connected to the outer end of the step position, and the inner end of the step position is connected to the pot body; the pot cover assembly includes a pressure cover, a safety valve for exhaust, an opening and closing device clamped on the pressure cover and locking or loosening the pressure cover and the pot body, and a knob assembly for controlling the opening and closing device to lock or loosen the pressure cover and the pot body by rotating; the outer edge of the pressure cover is placed on the step position, and the outer periphery of the pressure cover is located inside the rib; The outer edge of the pressure cover is bent inward to form an inner curved structure, a pot mouth sealing ring is installed in the inner curved structure, the outer diameter of the pot mouth sealing ring located at the inner curved structure is an embedded part, the lower side of the pot mouth sealing ring is a sealing part, the upper side of the embedded part extends obliquely toward the inner side of the pressure cover, the sealing part extends obliquely downward from the connection part, and when the pressure cover is closed, the sealing part of the pot mouth sealing ring presses against the step position; The opening and closing device includes at least two opening and closing mechanisms, and the opening and closing mechanism includes a pressure ring, a slider and a first guide column; the slider is provided with a first mounting hole and an elongated hole, the first mounting hole is connected to the elongated hole, the pressure ring is arranged at the outer end of the slider, and the first guide columns are respectively arranged at the inner ends of the slider; the pressure cover is provided with a mounting panel, the middle part of the mounting panel is recessed downward to form a mounting groove, the mounting groove is provided with a guide elongated hole and a first center hole, the mounting panel is provided with a second mounting hole for installing the safety valve, and the lower side of the mounting panel is provided with a sliding groove; the knob assembly includes a knob, a knob fixing piece and a center nut, the knob is provided with a second center hole, a positioning hole and a third mounting hole, and a fixing column is provided on the lower side of the knob fixing piece; the number of the guide elongated holes matches the number of the pressure rings, and the number of the third mounting holes matches the number of the guide elongated holes The number of the long holes matches the number of the long holes; a third center hole is opened in the center of the pressure cover, and a positioning column is provided on the upper side of the pressure cover, the number of the positioning columns matches the number of the pressure ring and the positions are relative; the pressure ring is placed on the pressure cover, and the long hole is sleeved on the positioning column; the mounting panel is mounted on the pressure cover, the pressure ring is clamped between the pressure cover and the mounting panel, the slider is mounted in the slide groove and can slide along it; the knob is mounted in the mounting groove, and the first guide column is inserted into the third mounting hole after passing through the guide long hole; the fixing column passes through the second center hole, the first center hole, and the third center hole in sequence from top to bottom and is tightened with the center nut; the knob is turned, and the third mounting hole forces the first guide column to slide along the guide long hole, so that the pressure ring locks or loosens the pressure cover and the pot body.

2. The pressure cooker with a novel opening and closing structure according to claim 1 is characterized in that: The opening and closing device is provided with three opening and closing mechanisms, which are located on the same plane and form an angle of 120 degrees between each other; the first side of the inner end of the slider extends outwardly and obliquely, and the slider is a gradually tapering structure from the middle to the inner end, and the second side of the slider extends in an arc shape from the middle of the slider to the inner end toward the first side of the inner end of the slider; the first guide columns at the inner ends of the three sliders are located below the mounting groove, the first side of the inner end of the slider located in the middle is close to the second side of the slider on its left side and can move along the arc-shaped oblique direction of the side, and the first side of the inner end of the slider located on the right is close to the second side of the slider in the middle and can move along the arc-shaped oblique direction of the side.

3. The pressure cooker with a novel opening and closing structure according to claim 1 is characterized in that: The knob assembly also includes a hand-feeling column and a tensioning spring; a sleeve is provided on the lower side of the fixing column and the knob fixing piece, the fixing column is located in the sleeve, a circle of concave-convex grooves is provided on the lower side of the sleeve, the tensioning spring and the hand-feeling column are placed in the positioning hole in sequence, the lower end of the tensioning spring presses against the bottom of the positioning hole, the upper end presses against the lower end of the hand-feeling column, and the upper end of the hand-feeling column presses against the concave-convex groove.

4. The pressure cooker with a novel opening and closing structure according to claim 1 is characterized in that: The cover edge of the pressure cover is provided with a safety device for deforming and displacing the pot mouth sealing ring when the pressure in the pot exceeds a set value, and the safety device is located below the pressure ring.

5. The pressure cooker with a novel opening and closing structure according to claim 4 is characterized in that: The safety device is a protruding surface formed by the cover surface of the pressure cover pushing up from bottom to top, and the protruding surface is aligned with the upper side of the embedded part of the pot mouth sealing ring; or, the safety device is an air relief slit opened on the cover surface of the pressure cover, and the air relief slit is aligned with the upper side of the embedded part of the pot mouth sealing ring; or, the safety device is a pressure relief hole opened on the cover surface of the pressure cover, and the pressure relief hole is aligned with the upper side of the embedded part of the pot mouth sealing ring.

6. The pressure cooker with a novel opening and closing structure according to claim 1 is characterized in that: The upper side of the side ear is provided with a first anti-slip pattern, which is formed by a number of grooves evenly arranged in parallel vertically and horizontally; the upper side of the knob fixing piece is provided with a second anti-slip pattern, which is formed by a number of grooves evenly arranged in parallel vertically and horizontally.

7. The pressure cooker with a novel opening and closing structure according to claim 1 is characterized in that: The safety valve comprises an upper valve body, a lower valve body, a first spring, a valve plug, a first sealing ring and a second sealing ring; the lower end of the upper valve body is connected to the upper end of the lower valve body by threads, and a cavity is provided between the two. The top of the upper valve body is provided with a first exhaust hole connected to the cavity, and the lower part thereof is provided with a circle of raised annular brim; one end of the valve plug is provided with a first clamping groove and a second clamping groove surrounding it, respectively, and the other end thereof is a ball segment structure; the bottom of the lower valve body is provided with a second exhaust hole connected to the cavity, and the bottom of the lower valve body is provided with a third clamping groove surrounding the lower valve body, and the periphery of the lower valve body is provided with a plurality of fourth exhaust holes connected to the cavity, and the fourth exhaust holes are located above the third clamping groove; the valve plug is located in the cavity, the upper end of the first spring presses against the inner wall of the upper valve body, and the lower end thereof is clamped in the first clamping groove of the valve plug and prompts the ball segment structure of the valve plug to press against or open the second exhaust hole; the first sealing ring is clamped in the second clamping groove and presses against the inner wall of the lower valve body around the second exhaust hole under the action of the first spring; The second sealing ring is stuck in the third slot; the pressure cover is provided with a fourth mounting hole, the fourth mounting hole is located below the first mounting hole of one of the sliders, and a retaining ring is extended upward around the fourth mounting hole; during installation, the top end of the upper valve body is inserted into the second mounting hole, the top end of the upper valve body slides and rises along the second mounting hole and extends out of the outside of the pressure cover, or the top end of the upper valve body slides and descends along the second mounting hole and retracts into the pressure cover; the lower end of the upper valve body passes through the first mounting hole, and the upper end of the lower valve body passes through the fourth mounting hole and the first mounting hole in sequence and is tightened with the upper valve body; the diameter of the annular brim is larger than the diameter of the first mounting hole, the diameter of the bottom of the lower valve body is larger than the diameter of the fourth mounting hole, and the second sealing ring is clamped between the bottom of the lower valve body and the pressure cover; when the safety valve is at rest, the fourth exhaust hole is located below the pressure cover and connected to the pot, the safety valve rises to the upper limit position, and the retaining ring of the fourth mounting hole presses against the fourth exhaust hole.

8. The pressure cooker with a novel opening and closing structure according to claim 1 is characterized in that: The pressure cover is provided with a fifth mounting hole, in which a regulating valve assembly for adjusting the air pressure in the pot and exhausting the gas is installed; the regulating valve assembly comprises a regulating valve knob, a rotating shaft, a second spring, a valve core, a leak-proof rubber ring, a regulating valve housing, a regulating lower valve, a regulating valve sealing ring and a slag separating nut; a threaded column is provided at the lower end of the regulating lower valve, and the threaded column is hollow to form an air outlet, and the air outlet is connected to the upper and lower sides of the regulating lower valve; the threaded column of the regulating lower valve passes through the fifth mounting hole and the regulating valve sealing ring in turn and is locked on the pressure cover with the slag separating nut, and the slag separating nut is provided with an air vent, the upper side of the air vent is connected to the air outlet, and the lower side is connected to the pot; the regulating valve knob is on the lower side An open cylindrical structure with a cavity, wherein a special-shaped column is provided on the lower side of the inner tube, a protruding position is provided on the inner wall of the cylinder, a dial is provided on the outside of the cylindrical structure, and a third anti-slip pattern is provided on the top side of the regulating valve knob, and the third anti-slip pattern is formed by a plurality of grooves evenly arranged in parallel vertically and horizontally; a through hole is provided inside the rotating shaft, and the through hole penetrates the rotating shaft from top to bottom, and the lower part of the rotating shaft extends into the through hole to form a first undercut, and the outer periphery of the rotating shaft is provided with a first spiral line spirally arranged from top to bottom; a special-shaped hole is provided on the upper part of the through hole, and the shape of the special-shaped hole matches the shape of the special-shaped column; the valve core comprises a valve core body located on the upper side, a second guide column fixed on the valve core body, and a second undercut arranged on the upper part of the second guide column , and the bottom end of the valve core at the lower side; the second guide column of the valve core is inserted into the through hole and slides along it, and when it slides down to the lower limit, the first undercut buckles the second undercut; the upper part of the regulating valve shell is a hollow guide cylinder, and the lower end of the guide cylinder extends inward to form a third undercut, and the guide cylinder is connected with the lower space of the regulating valve shell through the hole formed by the third undercut; the side wall of the lower space of the regulating valve shell is provided with a third exhaust hole, and an air flow channel is formed between the regulating valve shell and the regulating lower valve, and the third exhaust hole connects the air flow channel with the outside of the pot; the inner wall of the guide cylinder is provided with a second spiral line spirally arranged from top to bottom, and the second spiral line matches the first spiral line; the inner wall of the guide cylinder A pair of first positioning slots are respectively provided on the outer periphery of a group of opposite side edges of the guide cylinder at the lower side of the wall, and the first positioning slots include a first vertical guide slot and a first transverse guide slot connected thereto; a pair of positioning slots are respectively provided on a group of opposite side walls of the inner wall of the lower space of the regulating valve housing; a pair of second positioning slots are respectively provided on a group of opposite side edges of the regulating lower valve, and the second positioning slots include a second vertical guide slot and a second transverse guide slot connected thereto; after the positioning slots of the regulating valve housing are aligned from the second vertical guide slot and pressed downward to the second transverse guide slot, the regulating valve housing is rotated so that the positioning slots are clamped into the inner side of the second transverse guide slot, so that the regulating valve housing and the regulating lower valve can be clamped;An annular protrusion is formed between the valve core body and the bottom end of the valve core, and the second spring is sleeved on the outer periphery of the valve core body, and the upper end of the second spring presses against the bottom of the first spiral line as the valve core moves, and the lower end of the second spring presses against the annular protrusion of the valve core. After the bottom end of the valve core passes through the hole formed by the third inverted buckle from top to bottom, the air outlet is closed or opened as the valve core moves up and down; an annular groove is provided on the outer periphery of the valve body on the upper side of the bottom end of the valve core, and the leak-proof rubber ring is sleeved in the annular groove. As the valve core moves upward to the limit position, the upper side surface of the leak-proof rubber ring presses against the lower side surface of the third inverted buckle. ; After the protruding catch of the regulating valve knob is aligned from the first vertical guide groove and pressed downward to the first transverse guide groove, the regulating valve knob is rotated so that the protruding catch is snapped into the inner side of the first transverse guide groove, so that the regulating valve knob and the guide cylinder of the regulating valve housing can be clamped; the special-shaped column is embedded in the special-shaped hole, the rotating shaft sleeve is on the outer periphery of the second guide column, the first spiral line cooperates with the second spiral line, the regulating valve knob rotates, and the special-shaped column forces the first spiral line of the rotating shaft to engage with the second spiral line of the guide cylinder to rotate to realize the lifting and lowering of the valve core. ;

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