Electric rice cooker with multi-stage pressure full boiling cooking

Abstract

The utility model discloses an electric rice cooker with multi-stage pressure full boiling cooking, comprising a pot body and a cover body, wherein the cover body is detachably covered on the pot body, and the cover body is provided with a second exhaust hole and a third exhaust hole connected to the pot body, and the electric rice cooker with multi-stage pressure full boiling cooking also comprises a first exhaust valve assembly corresponding to the second exhaust hole and a second exhaust valve assembly corresponding to the third exhaust hole. With such a design, the user can adjust the first exhaust valve assembly or the second exhaust valve assembly as needed to adjust the electric rice cooker to non-pressure full boiling cooking, low-pressure full boiling cooking or high-pressure full boiling cooking, that is, to achieve multi-stage pressure full boiling cooking, thereby meeting the user's cooking needs for different ingredients.

Description

Technical Field

[0001] The utility model relates to the technical field of electric rice cookers, in particular to an electric rice cooker with multi-stage pressure full boiling cooking. Background Art

[0002] At present, there are generally two types of electric rice cookers on the market, one is a pressureless cooking electric rice cooker, the other is a pressure cooking electric rice cooker. Among them, the pressure cooking electric rice cookers all perform full boiling cooking in a single pressure stage, and cannot achieve full boiling cooking in two or more pressure stages. When users use electric rice cookers to cook different ingredients, they require different cooking pressures, which results in the traditional electric rice cookers being unable to meet the users' cooking needs for different ingredients. Utility Model Content

[0003] In order to overcome at least one defect of the above-mentioned prior art, the utility model provides an electric rice cooker with multi-stage pressure full boiling cooking to solve the problem that the existing electric rice cookers have a single pressure stage and cannot meet the different usage requirements of users.

[0004] The utility model is a technical solution adopted to solve the problem. The utility model embodiment discloses an electric rice cooker with multi-stage pressure full boiling cooking, comprising a pot body and a cover body, wherein the cover body is detachably covered on the pot body, and the cover body is provided with a second exhaust hole and a third exhaust hole connected to the pot body, and the electric rice cooker with multi-stage pressure full boiling cooking also includes a first exhaust valve assembly corresponding to the second exhaust hole and a second exhaust valve assembly corresponding to the third exhaust hole;

[0005] Wherein, when the electric rice cooker is in a pressure-free full-boiling cooking state, the first exhaust valve assembly opens the second exhaust hole and the second exhaust valve assembly closes the third exhaust hole;

[0006] When the electric rice cooker is in a low-pressure full-boiling cooking state, the first exhaust valve assembly closes the second exhaust hole and the second exhaust valve assembly closes the third exhaust hole, the pressure of the second exhaust valve assembly is set to the low-pressure full-boiling cooking pressure, and the second exhaust valve assembly is pushed open when the pressure of the pot body is greater than the pressure of the second exhaust valve;

[0007] When the rice cooker is in a high-pressure full-boiling cooking state, the first exhaust valve assembly closes the second exhaust hole and the second exhaust valve assembly closes the exhaust hole, the pressure of the second exhaust valve assembly is set to a low-pressure full-boiling cooking pressure, and the first exhaust valve assembly is pushed open when the pressure in the pot body is greater than the pressure of the first exhaust valve assembly, or the second exhaust valve assembly is pushed open when the pressure in the pot body is greater than the pressure of the second exhaust valve assembly.

[0008] As an optional embodiment, in an embodiment of the utility model, the first exhaust valve assembly includes a weight seat, a weight cover, a weight and a first solenoid valve, the weight seat is arranged at the second exhaust hole, the weight cover is covered on the weight seat, the weight is located between the weight seat and the weight cover, and the first solenoid valve is used to drive the weight to move to open the second exhaust hole or close the second exhaust hole.

[0009] As an optional implementation, in an embodiment of the utility model, the second exhaust valve assembly includes a valve seat, a valve core, a valve cover and a second drive assembly, the valve seat is arranged at the third exhaust hole, the valve cover covers the valve seat, the valve core is located between the valve seat and the valve cover, and is used to open or close the third exhaust hole, and the second drive assembly is used to adjust the pressure of the valve core.

[0010] As an optional implementation, in an embodiment of the utility model, the valve core includes a sealing cone, a second spring, and a pressure plate arranged in sequence from the valve seat to the valve cover, the sealing cone is used to open or close the third exhaust hole, and the second drive assembly is arranged on the cover body, and is used to drive the pressure plate to move to adjust the pressure of the sealing cone.

[0011] As an optional embodiment, in an embodiment of the utility model, the second driving component includes a second solenoid valve, a rocker arm and a second movable rod, the second solenoid valve is arranged on the cover body, the rocker arm is swingably arranged on the cover body and is connected to the second solenoid valve, the second movable rod is movably arranged on the cover body, the rocker arm swings under the drive of the second solenoid valve to drive the second movable rod to move, and the second movable rod squeezes the pressure plate to make the pressure plate move.

[0012] As an optional embodiment, in an embodiment of the utility model, the electric rice cooker with multi-stage pressure full-boiling cooking also includes a first driving assembly, a connecting rod and an annular lock; the cover body is detachably covered on the pot body; the first driving assembly is arranged on the cover body; one end of the connecting rod is fixed on the cover body and can rotate around the center of the pot body; the annular lock is connected to the other end of the connecting rod; the connecting rod rotates under the drive of the first driving assembly and drives the annular lock to rotate, so that the pot teeth on the annular lock and the pot teeth on the pot body are in a locked state or an unlocked state.

[0013] As an optional embodiment, in an embodiment of the utility model, the cover body includes a cover plate and a lining which are arranged in sequence from close to the pot body to away from the pot body, the connecting rod is located on the other side of the lining opposite to the cover plate, one end of the connecting rod is fixed to the lining, the annular lock is located below the lining and is arranged around the cover plate and the pot body, a first hanging shaft is provided on the annular lock, and an arc-shaped avoidance groove is provided on the lining, and the first hanging shaft passes through the avoidance groove to be connected to the other end of the connecting rod.

[0014] As an optional implementation, in an embodiment of the utility model, a groove is provided on the connecting rod, and the first driving assembly includes a driving member and a transmission member, and the driving member and the transmission member are both located in the groove, the driving member is fixed on the cover body, and the transmission member is provided on the driving member and connected to the connecting rod, and the transmission member drives the connecting rod to rotate under the drive of the driving member.

[0015] As an optional implementation, in an embodiment of the utility model, the cover body includes a cover plate and a lining which are arranged in sequence from close to the pot body to away from the pot body, and the connecting rod is located on the other side of the lining opposite to the cover plate. The electric rice cooker with multi-stage pressure full boiling cooking also includes an anti-foolproof component, which limits the connecting rod when the cover plate is not installed on the lining.

[0016] As an optional embodiment, in an embodiment of the utility model, the fool-proofing component includes a first movable rod and a first spring, one end of the first movable rod is located on the side where the connecting rod is located and a baffle is provided thereon, the other end of the first movable rod is movably passed through the lining to between the lining and the cover plate and abuts against the cover plate, the first spring is sleeved on the other end of the first movable rod, and when the cover plate is not installed on the lining, the first spring drives the first movable rod to move in the direction toward the pot body so that the baffle limits the connecting rod.

[0017] As an optional implementation, in an embodiment of the utility model, a magnetic part is provided on the connecting rod, and the electric rice cooker with multi-stage pressure full-boiling cooking also includes a circuit board, a first magnetic proximity switch and a second magnetic proximity switch, the circuit board is provided on the cover body, the first magnetic proximity switch and the second magnetic proximity switch are provided on the circuit board and electrically connected to the circuit board, the first magnetic proximity switch is used to send an unlocking state signal to the circuit board when sensing the magnetic part, and the second magnetic proximity switch is used to send a locking state signal to the circuit board when sensing the magnetic part.

[0018] As an optional implementation, in an embodiment of the utility model, the electric rice cooker with multi-stage pressure full-boiling cooking also includes a magnetically sensitive float assembly, which is movably provided on the cover body. When the annular lock and the pot body are in a locked state, the magnetically sensitive float assembly can move relative to the cover body under the pressure in the pot body to limit the connecting rod, so that the annular lock remains in a locked state.

[0019] As an optional implementation, in an embodiment of the utility model, the cover body is provided with a first exhaust hole and a movable hole, the magnetically sensitive float assembly includes a magnetically sensitive float and a first sealing ring, the first sealing ring is provided on the cover body and covers the first exhaust hole, one end of the magnetically sensitive float is passed through the first sealing ring, and the other end of the magnetically sensitive float is movably passed through the movable hole, and the magnetically sensitive float moves under the exhaust pressure of the first exhaust hole to limit the connecting rod.

[0020] As an optional implementation, in an embodiment of the utility model, when the connecting rod is rotated until the pot teeth on the annular lock buckle are locked with the pot teeth on the pot body, an avoidance position is formed on one side of the connecting rod, and the magnetically sensitive float assembly moves to pass through the avoidance position to limit the connecting rod.

[0021] As an optional implementation, in an embodiment of the utility model, the electric rice cooker with multi-stage pressure full-boiling cooking also includes a circuit board and a third magnetic proximity switch, the circuit board is arranged on the cover body, the third magnetic proximity switch is arranged on the circuit board and electrically connected to the circuit board, and the third magnetic proximity switch is used to sense the activity of the magnetically sensitive float assembly.

[0022] As an optional embodiment, in an embodiment of the utility model, the cover body includes a cover plate and a lining which are arranged in sequence from close to the pot body to away from the pot body, the annular lock is located below the lining and is arranged around the cover plate and the pot body, and a first pressure-bearing sealed cavity is formed between the pot body, the annular lock and the cover plate, and the electric rice cooker with multi-stage pressure full boiling cooking also includes a pressure relief assembly, which connects the cover plate and the lining so that the cover plate can float relative to the lining.

[0023] As an optional implementation, in an embodiment of the utility model, the pressure relief assembly includes a floating bracket, a second hanging shaft and a second sealing ring, the floating bracket can be movably arranged on the liner, the second sealing ring is sleeved on the second hanging shaft and is located between the liner and the cover plate, the cover plate is fixed to the second hanging shaft by a screw buckle, and a second sealing cavity is formed between the cover plate, the second hanging shaft and the second sealing ring.

[0024] As an optional implementation, in an embodiment of the utility model, the second sealing ring is also used to fold when the pressure in the pot body reaches a preset overpressure relief pressure to perform overpressure relief.

[0025] As an optional implementation, in an embodiment of the utility model, the electric rice cooker with multi-stage pressure full-boiling cooking also includes an anti-overflow plate, the floating bracket includes an upper floating bracket and a lower floating bracket, the upper floating bracket is movably arranged on the lining, the lower floating bracket is mateably connected to the upper floating bracket, a heating wire is provided between the lower floating bracket and the upper floating bracket, the cover plate is tightly attached to the lower floating bracket, and the anti-overflow plate is tightly attached to the cover plate.

[0026] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0027] The utility model provides an electric rice cooker comprising a pot body and a cover body, wherein the cover body is provided with a second exhaust hole and a third exhaust hole which are connected to the pot body, and the electric rice cooker with multi-stage pressure full boiling cooking further comprises a first exhaust valve assembly which is arranged corresponding to the second exhaust hole and a second exhaust valve assembly which is arranged corresponding to the third exhaust hole; wherein when the electric rice cooker is in a pressure-free full boiling cooking state, the first exhaust valve assembly opens the second exhaust hole and the second exhaust valve assembly closes the third exhaust hole, and the second exhaust hole can exhaust gas in the pot body, thereby realizing pressure-free full boiling cooking; when the electric rice cooker is in a low-pressure full boiling cooking state, the first exhaust valve assembly closes the second exhaust hole and the second exhaust valve assembly closes the third exhaust hole, and the pressure of the second exhaust valve assembly is set to low-pressure full boiling cooking. When the pressure of the pot body is greater than the pressure of the second exhaust valve, the second exhaust valve assembly is pushed open, and the third exhaust hole can discharge the gas in the pot body, thereby realizing low-pressure full boiling cooking; when the electric rice cooker is in a high-pressure full boiling cooking state, the first exhaust valve assembly closes the second exhaust hole and the second exhaust valve assembly closes the exhaust hole, and the pressure of the second exhaust valve assembly is set to the low-pressure full boiling cooking pressure, and when the pressure in the pot body is greater than the pressure of the first exhaust valve assembly, the first exhaust valve assembly is pushed open, and the second exhaust hole can discharge the gas in the pot body, thereby realizing high-pressure full boiling cooking, or, when the pressure in the pot body is greater than the pressure of the second exhaust valve assembly, the second exhaust valve assembly is pushed open, and the third exhaust hole can discharge the gas in the pot body, thereby realizing high-pressure full boiling cooking. With such a design, the user can adjust the electric rice cooker to full boiling cooking without pressure, full boiling cooking at low pressure or full boiling cooking at high pressure according to the needs, that is, to realize multi-stage full boiling cooking at pressure, thereby meeting the cooking needs of users for different ingredients. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A cross-sectional view of an electric rice cooker with multi-stage pressure full boiling cooking in an embodiment of the utility model Figure 1 ;

[0030] Figure 2 A cross-sectional view of an electric rice cooker with multi-stage pressure full boiling cooking in an embodiment of the utility model Figure 2 ;

[0031] Figure 3 A cross-sectional view of an electric rice cooker with multi-stage pressure full boiling cooking in an embodiment of the utility model Figure 3 ;

[0032] Figure 4 A cross-sectional view of an electric rice cooker with multi-stage pressure full boiling cooking in an embodiment of the utility model Figure 4 ;

[0033] Figure 5 A cross-sectional view of an electric rice cooker with multi-stage pressure full boiling cooking in an embodiment of the utility model Figure 5 ;

[0034] Figure 6 A cross-sectional view of an electric rice cooker with multi-stage pressure full boiling cooking in an embodiment of the utility model Figure 6 .

[0035] The meanings of the reference numerals are as follows:

[0036] 1-pot body; 2-cover plate; 3-lining; 4-connecting rod; 5-slot; 6-avoidance position; 7-ring lock; 8-manual lever; 9-avoidance groove; 10-driving member; 11-transmission member; 12-first movable rod; 13-baffle; 14-first spring; 15-magnetic member; 16-circuit board; 17-first magnetic proximity switch; 18-second magnetic proximity switch; 19-magnetic sensitive float; 191-inner float; 192-outer float; 20-first sealing ring; 21- The third magnetic proximity switch; 22-floating bracket; 23-upper floating bracket; 24-lower floating bracket; 25-second suspension shaft; 26-second sealing ring; 27-anti-overflow plate; 28-heating wire; 29-weight seat; 30-weight cover; 31-weight; 32-first solenoid valve; 33-valve seat; 34-second spring; 35-valve cover; 36-sealing cone; 38-pressure plate; 39-second solenoid valve; 40-rocker; 41-second movable rod; 42-first reinforcement plate. DETAILED DESCRIPTION

[0037] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0038] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0040] See also Figure 1The utility model discloses an electric rice cooker with multi-stage pressure full boiling cooking, comprising a pot body 1, a cover body, a first driving assembly, a connecting rod 4 and an annular lock 7. The cover body is detachably covered on the pot body 1, the first driving assembly is arranged on the cover body, one end of the connecting rod 4 is fixed on the cover body and can rotate around the center of the pot body 1, the annular lock 7 is connected to the other end of the connecting rod 4, the connecting rod 4 is used to rotate under the drive of the first driving assembly and drive the annular lock 7 to rotate, so that the pot teeth on the annular lock 7 and the pot teeth on the pot body 1 are in a locked state or an unlocked state. When in use, when the cover needs to be locked to the pot body 1, the first drive assembly drives the connecting rod 4, and the connecting rod 4 rotates under the drive of the first drive assembly and drives the annular lock buckle 7 to rotate, so that the pot teeth on the annular lock buckle 7 are in a locked state with the pot teeth on the pot body 1; when the cover needs to be unlocked from the pot body 1, the first drive assembly drives the connecting rod 4, and the connecting rod 4 rotates under the drive of the first drive assembly and drives the annular lock buckle 7 to rotate, so that the pot teeth on the annular lock buckle 7 are in an unlocked state with the pot teeth on the pot body 1. With such a design, by providing an electric rice cooker with multi-stage pressure full boiling cooking, the operation of the user can be simplified, thereby improving the user's experience.

[0041] Furthermore, the cover body includes a cover plate 2 and a lining 3 which are arranged in sequence from close to the pot body 1 to far away from the pot body 1, the connecting rod 4 is located on the other side of the lining 3 opposite to the cover plate 2, one end of the connecting rod 4 is fixed on the lining 3, the annular locking buckle 7 is located below the lining 3 and is arranged around the cover plate 2 and the pot body 1, the annular locking buckle 7 is provided with a first hanging shaft, the lining 3 is provided with an arc-shaped avoidance groove 9, and the first hanging shaft passes through the avoidance groove 9 to be connected to the other end of the connecting rod 4.

[0042] Furthermore, a slot 5 is provided on the connecting rod 4, and the first driving component includes a driving member 10 and a transmission member 11, both of which are located in the slot 5, the driving member 10 is fixed on the cover body, the transmission member 11 is provided on the driving member 10 and connected to the connecting rod 4, and the transmission member 11 is used to drive the connecting rod 4 to rotate under the drive of the driving member 10.

[0043] The driving member 10 is a motor, the transmission member 11 is a gear, and meshing teeth are provided on the inner side wall of the slot 5, and the gear is meshed and connected with the meshing teeth.

[0044] In some embodiments, considering that the electric rice cooker may have an abnormal power outage or the motor may be abnormal and unable to open and close the annular lock buckle 7, preferably, a manual lever 8 is further provided on the annular lock buckle 7, and the manual lever 8 is used to drive the annular lock buckle 7 to rotate under the action of an external force. With such a design, when an abnormal power outage occurs or the driving member 10 is abnormal and unable to open and close the annular lock buckle 7, the user can manually rotate the manual lever to unlock or close the lock.

[0045] See also Figure 2In some embodiments, the cover body includes a cover plate 2 and an inner liner 3 which are sequentially arranged from the direction close to the pot body 1 to the direction away from the pot body 1, and the connecting rod 4 is located on the other side of the inner liner 3 opposite to the cover plate 2. The electric rice cooker with multi-stage pressure full boiling cooking also includes a foolproof component, which is used to limit the connecting rod 4 when the cover plate 2 is not installed on the inner liner 3. With such a design, when the cover plate 2 is installed on the inner liner 3, the foolproof component can limit the connecting rod 4, and the connecting rod 4 cannot rotate, resulting in the annular lock buckle 7 being unable to lock, thereby achieving the purpose of foolproofing the cover plate 2 when it is missing.

[0046] Further, the foolproof assembly includes a first movable rod 12 and a first spring 14, one end of the first movable rod 12 is located on the side where the connecting rod 4 is located and a baffle 13 is arranged on it, the other end of the first movable rod 12 is movably arranged between the lining 3 and the cover plate 2 and abuts against the cover plate 2, and the first spring 14 is sleeved on the other end of the first movable rod 12. When the cover plate 2 is not installed on the lining 3, the first spring 14 drives the first movable rod 12 to move in the direction toward the pot body 1, so that the baffle 13 limits the connecting rod 4. With such a design, when the cover plate 2 is installed on the lining 3, the cover plate 2 lifts the first movable rod 12, and the baffle 13 avoids the connecting rod 4. At this time, the connecting rod 4 can rotate with the annular lock buckle 7 to realize the opening and closing of the lock; when the cover plate 2 is not installed, the first movable rod 12 moves downward under the action of the first spring 14, and the baffle 13 blocks the connecting rod 4, so that the connecting rod 4 cannot rotate, resulting in the annular lock buckle 7 being unable to lock, thereby achieving the foolproof purpose of missing the cover plate 2.

[0047] See also Figures 2 to 4 In some embodiments, in order for the electric rice cooker with multi-stage pressure full boiling cooking to detect whether the annular lock 7 is locked or unlocked, a magnetic member 15 is provided on the connecting rod 4, and the electric rice cooker with multi-stage pressure full boiling cooking also includes a circuit board 16, a first magnetic proximity switch 17 and a second magnetic proximity switch 18. The circuit board 16 is arranged on the cover body, the first magnetic proximity switch 17 and the second magnetic proximity switch 18 are arranged on the circuit board 16 and are electrically connected to the circuit board 16, the first magnetic proximity switch 17 is used to send an unlocking state signal to the circuit board 16 when sensing the magnetic member 15, and the second magnetic proximity switch 18 is used to send a locking state signal to the circuit board 16 when sensing the magnetic member 15.

[0048] In some embodiments, the electric rice cooker with multi-stage pressure full boiling cooking further includes a magnetic sensitive float assembly, which is movably arranged on the cover body. When the annular lock buckle 7 and the pot body 1 are in a locked state, the magnetic sensitive float assembly can move relative to the cover body under the pressure in the pot body 1 to limit the connecting rod 4, so that the annular lock buckle 7 remains in the locked state. With such a design, by setting the magnetic sensitive float assembly, the pressure-starting and opening-preventing function of the electric rice cooker can be realized.

[0049] Furthermore, in order to limit the connecting rod 4, a first exhaust hole and a movable hole are provided on the cover body. The magnetic-sensitive float assembly includes a magnetic-sensitive float 19 and a first sealing ring 20. The first sealing ring 20 is provided on the cover body and covers the first exhaust hole. One end of the magnetic-sensitive float 19 is passed through the first sealing ring 20, and the other end of the magnetic-sensitive float 19 is movably passed through the movable hole. The magnetic-sensitive float 19 is used to move under the exhaust pressure of the first exhaust hole to limit the connecting rod 4.

[0050] The magnetically sensitive float 19 includes an inner float 191 and an outer float 192 . The inner float 191 is inserted through the first sealing ring 20 , and the outer float 192 is movably inserted through the movable hole.

[0051] Furthermore, in order for the magnetically sensitive float assembly to limit the connecting rod 4, when the connecting rod 4 is rotated until the pot teeth on the annular lock buckle 7 are locked with the pot teeth on the pot body 1, an avoidance position 6 is formed on one side of the connecting rod 4, and the magnetically sensitive float assembly moves to penetrate the avoidance position 6 to limit the connecting rod 4.

[0052] In some embodiments, the electric rice cooker with multi-stage pressure full boiling cooking further includes a circuit board 16 and a third magnetic proximity switch 21, the circuit board 16 is arranged on the cover, the third magnetic proximity switch 21 is arranged on the circuit board 16 and electrically connected to the circuit board 16, and the third magnetic proximity switch 21 is used to sense the activity of the magnetic sensitive float assembly to detect the pressure in the pot body 1. With such a design, through the mutual cooperation of the magnetic sensitive float assembly and the third magnetic proximity switch 21, the electric rice cooker can simultaneously realize the pressure start-up anti-opening and pressure detection functions, thereby simplifying the structure of the electric rice cooker and reducing the production cost of the electric rice cooker.

[0053] The following is a detailed description of the use of the magnetic sensitive float assembly and the third magnetic proximity switch 21:

[0054] When there is no pressure in the pot body 1, the magnetic sensitive float 19 is away from the third magnetic proximity switch 21 on the circuit board 16, and the third magnetic proximity switch 21 on the circuit board 16 detects that there is no pressure in the pot body 1 and sends a signal to the circuit board 16, and the driving member 10 can automatically open and close the electric rice cooker as required;

[0055] When there is pressure in the pot body 1, the pressure in the pot body 1 rises and is exhausted through the first exhaust hole, pushing the magnetic float 19 up, and the magnetic float 19 passes through the avoidance position 6 of the connecting rod 4. The connecting rod 4 cannot rotate, and the annular lock buckle 7 cannot rotate to open the cover, in order to prevent the cover from opening. At the same time, the magnetic float 19 approaches the third magnetic proximity switch 21 on the circuit board 16, and the third magnetic proximity switch 21 detects that there is pressure in the pot body 1 and sends a signal to the circuit board 16. At this time, the driving member 10 cannot rotate;

[0056] When the pot body 1 is restored from being pressurized to being pressure-free, the magnetic float 19 drops and resets under the gravity and the pulling force of the first sealing ring 20. The magnetic float 19 is lower than the connecting rod 4, and the connecting rod 4 can rotate normally. At the same time, the driving member 10 can rotate normally and drive the connecting rod 4 and the annular lock buckle 7 to unlock through the gears. At the same time, the magnetic float 19 moves away from the third magnetic proximity switch 21. The third magnetic proximity switch 21 detects that there is pressure in the pot body 1 and sends a signal to the circuit board 16.

[0057] When there is no pressure in the pot, the magnetic float 19 and the inner float drop and reset under the gravity and the pulling force of the first sealing ring 20, and the magnetic float 19 moves away from the magnetic proximity switch. At this time, a signal is sent to the circuit board 16 that there is no pressure in the pot. At this time, the magnetic float 19 is lower than the connecting rod 4, and the connecting rod 4 can rotate normally. At the same time, the driving member 10 can rotate normally to drive the connecting rod 4 and the lock to unlock through the gear.

[0058] In some embodiments, the cover body includes a cover plate 2 and a lining 3 which are arranged in sequence from close to the pot body 1 to far away from the pot body 1. The annular locking buckle 7 is located below the lining 3 and is arranged around the cover plate 2 and the pot body 1. A first sealed pressure-bearing cavity is formed between the pot body 1, the annular locking buckle 7 and the cover plate 2. The electric rice cooker with multi-stage pressure full boiling cooking also includes a pressure relief assembly, which connects the cover plate 2 and the lining 3 so that the cover plate 2 can float relative to the lining 3, that is, when the cover plate 2 is under pressure, it can float relative to the lining 3 to avoid deformation of the cover body of the product due to pressure on the lining 3.

[0059] Furthermore, the pressure relief assembly includes a floating bracket 22, a second hanging shaft 25 and a second sealing ring 26. The floating bracket 22 can be movably arranged on the liner 3. The second sealing ring 26 is sleeved on the second hanging shaft 25 and is located between the liner 3 and the cover plate 2. The cover plate 2 is fixed to the second hanging shaft 25 by a screw buckle. A second sealing cavity is formed between the cover plate 2, the second hanging shaft 25 and the second sealing ring 26. With such a design, when the pressure inside the pot rises, the cover plate 2 is pressurized to float up a certain displacement, and the periphery of the cover plate 2 presses against the annular lock buckle 7 to form a pressure-bearing part. At the same time, the cover plate 2 pushes the floating bracket 22 to float up. Since the floating bracket 22 can float up and down, the pressure on the lining 3 can be avoided to prevent the upper cover of the product from being deformed. At the same time, the distance between the floating bracket 22, the second sealing ring 26 and the cover plate 2 is fixed by the second hanging shaft 25 and the rotary buckle. The second sealing ring 26 will not cause leakage due to deformation of the distance. When the pressure in the pot body 1 rises, the pressure in the second sealed cavity formed by the cover plate 2, the second hanging shaft 25 and the second sealing ring 26 rises.

[0060] Furthermore, considering the situation that the electric rice cooker has excessive pressure which cannot be relieved by the floating bracket 22, the second sealing ring 26 is also used to fold when the pressure in the pot body 1 reaches a preset overpressure relief pressure to relieve overpressure.

[0061] In some embodiments, the electric rice cooker with multi-stage pressure full boiling cooking further includes an anti-overflow plate 27, the floating bracket 22 includes an upper floating bracket 23 and a lower floating bracket 24, the upper floating bracket 23 is movably arranged on the lining 3, the lower floating bracket 24 is connected to the upper floating bracket 23, a heating wire 28 is arranged between the lower floating bracket 24 and the upper floating bracket 23, the cover plate 2 is close to the lower floating bracket 24, and the anti-overflow plate 27 is close to the cover plate 2. With such a design, when there is pressure or no pressure in the pot body 1, the anti-overflow plate 27, the cover plate 2 and the lower cover of the floating bracket 22 are all close to each other, which can ensure the heating and heat transfer effect, reduce the condensation of the cover plate 2 or the anti-overflow plate 27 during cooking or heat preservation, and improve the problem of dripping when cooking.

[0062] See also Figure 5 and Figure 6 In some embodiments, in order for the electric rice cooker with multi-stage pressure full boiling cooking to achieve multi-stage pressure full boiling cooking, a second exhaust hole and a third exhaust hole connected to the pot body 1 are provided on the cover body, and the electric rice cooker with multi-stage pressure full boiling cooking also includes a first exhaust valve assembly arranged corresponding to the second exhaust hole and a second exhaust valve assembly arranged corresponding to the third exhaust hole; wherein, when the electric rice cooker is in a pressure-free full boiling cooking state, the first exhaust valve assembly opens the second exhaust hole and the second exhaust valve assembly closes the third exhaust hole, and the second exhaust hole can discharge the gas in the pot body 1, thereby achieving pressure-free full boiling cooking; when the electric rice cooker is in a low-pressure full boiling cooking state, the first exhaust valve assembly closes the second exhaust hole and the second exhaust valve assembly closes the third exhaust hole, and the pressure setting of the second exhaust valve assembly When the pressure of the pot body 1 is greater than the pressure of the second exhaust valve, the second exhaust valve assembly is pushed open, and the third exhaust hole can discharge the gas in the pot body 1, thereby realizing low-pressure full boiling cooking; when the electric rice cooker is in a high-pressure full boiling cooking state, the first exhaust valve assembly closes the second exhaust hole and the second exhaust valve assembly closes the exhaust hole, and the pressure of the second exhaust valve assembly is set to the low-pressure full boiling cooking pressure. When the pressure in the pot body 1 is greater than the pressure of the first exhaust valve assembly, the first exhaust valve assembly is pushed open, and the second exhaust hole can discharge the gas in the pot body 1, thereby realizing high-pressure full boiling cooking, or, when the pressure in the pot body 1 is greater than the pressure of the second exhaust valve assembly, the second exhaust valve assembly is pushed open, and the third exhaust hole can discharge the gas in the pot body 1, thereby realizing high-pressure full boiling cooking. With such a design, the user can adjust the electric rice cooker to non-pressure full boiling cooking, low-pressure full boiling cooking or high-pressure full boiling cooking according to the needs, that is, to realize multi-stage pressure full boiling cooking, thereby meeting the user's cooking needs for different ingredients.

[0063] In some embodiments, the first exhaust valve assembly includes a weight seat 29, a weight cover 30, a weight 31 and a first solenoid valve 32. The weight seat 29 is arranged at the second exhaust hole, the weight cover 30 covers the weight seat 29, the weight 31 is located between the weight seat 29 and the weight cover 30, and the first solenoid valve 32 is arranged on the cover body, and is used to drive the weight 31 to move to open the second exhaust hole or close the second exhaust hole.

[0064] In some embodiments, the second exhaust valve assembly includes a valve seat 33, a valve core, a valve cover 35 and a second drive assembly. The valve seat 33 is arranged at the third exhaust hole, the valve cover 35 covers the valve seat 33, and the valve core is located between the valve seat 33 and the valve cover 35, and is used to open or close the third exhaust hole. The second drive assembly is used to adjust the pressure of the valve core.

[0065] Furthermore, the valve core includes a sealing cone 36, a second spring 34, and a pressure plate 38 which are arranged in sequence from the valve seat 33 to the valve cover 35. The sealing cone 36 is used to open or close the third exhaust hole. The second drive assembly is arranged on the cover body to drive the pressure plate 38 to move to adjust the pressure of the sealing cone 36.

[0066] Furthermore, the second driving component includes a second solenoid valve 39, a rocker arm 40 and a second movable rod 41. The second solenoid valve 39 is arranged on the cover body, the rocker arm 40 is swingably arranged on the cover body and connected to the second solenoid valve 39, and the second movable rod 41 is movably arranged on the cover body. The rocker arm 40 swings under the drive of the second solenoid valve 39 to drive the second movable rod 41 to move, and the second movable rod 41 squeezes the pressure plate 38 to make the pressure plate 38 move.

[0067] The following is a detailed description of the multi-stage pressure full boiling cooking of the electric rice cooker with multi-stage pressure full boiling cooking:

[0068] When pressure-free full boiling cooking is required, the push rod on the first solenoid valve 32 extends to push the weight 31 to move sideways, and the second exhaust hole of the weight 31 is separated, so that the pot body 1 is ventilated with the outside, and pressure-free full boiling cooking is achieved;

[0069] When low-pressure cooking is required, the push rod on the first solenoid valve 32 contracts, the weight 31 is sealed with the second exhaust hole, and the sealing cone 36 is sealed with the third exhaust hole under the action of the second spring 34. At this time, the force of the second spring 34 is relatively small and can only withstand a set lower pressure. When the pressure in the pot body 1 exceeds the set low pressure value, the pressure in the pot body 1 pushes the sealing cone 36 to rise, and the sealing cone 36 is separated from the third exhaust hole, thereby realizing low-pressure full boiling cooking;

[0070] When high-pressure boiling cooking is required, the pressure in the pot body 1 continues to increase. When the pressure in the pot body 1 exceeds the pressure of the weight 31 or the pressure that the sealing cone 36 can withstand, the weight 31 rises and disengages from the second exhaust hole or the sealing cone 36 rises and disengages from the third exhaust hole, thereby achieving high-pressure full boiling cooking.

[0071] In some embodiments, the electric rice cooker with multi-stage pressure full boiling cooking further includes a reinforcing plate, which is disposed on the cover body to enhance the strength of the cover body.

[0072] Specifically, the reinforcing plate includes a first reinforcing plate 42 and a second reinforcing plate. The first reinforcing plate 42 is arranged on the lining 3 to prevent the cover from having insufficient strength. The second reinforcing plate is arranged on the supporting ring of the cover, so that the rice cooker can meet the use requirements while meeting the requirements of miniaturization.

[0073] The utility model provides an electric rice cooker with multi-stage pressure full boiling cooking. The electric rice cooker comprises a pot body 1 and a cover body, wherein the cover body is detachably covered on the pot body 1, and a second exhaust hole and a third exhaust hole connected to the pot body 1 are arranged on the cover body. The electric rice cooker with multi-stage pressure full boiling cooking also comprises a first exhaust valve assembly arranged corresponding to the second exhaust hole and a second exhaust valve assembly arranged corresponding to the third exhaust hole. When the electric rice cooker is in a pressure-free full boiling cooking state, the first exhaust valve assembly opens the second exhaust hole and the second exhaust valve assembly closes the third exhaust hole, and the second exhaust hole can exhaust the gas in the pot body 1, thereby realizing pressure-free full boiling cooking. When the electric rice cooker is in a low-pressure full boiling cooking state, the first exhaust valve assembly closes the second exhaust hole and the second exhaust valve assembly closes the third exhaust hole, and the second exhaust valve assembly closes the third exhaust hole. The pressure of the gas valve assembly is set to the low-pressure full boiling cooking pressure. When the pressure of the pot body 1 is greater than the pressure of the second exhaust valve, the second exhaust valve assembly is pushed open, and the third exhaust hole can discharge the gas in the pot body 1, thereby realizing low-pressure full boiling cooking; when the electric rice cooker is in the high-pressure full boiling cooking state, the first exhaust valve assembly closes the second exhaust hole and the second exhaust valve assembly closes the exhaust hole, and the pressure of the second exhaust valve assembly is set to the low-pressure full boiling cooking pressure. When the pressure in the pot body 1 is greater than the pressure of the first exhaust valve assembly, the first exhaust valve assembly is pushed open, and the second exhaust hole can discharge the gas in the pot body 1, thereby realizing high-pressure full boiling cooking, or, when the pressure in the pot body 1 is greater than the pressure of the second exhaust valve assembly, the second exhaust valve assembly is pushed open, and the third exhaust hole can discharge the gas in the pot body 1, thereby realizing high-pressure full boiling cooking. With such a design, the user can adjust the electric rice cooker to full boiling cooking without pressure, full boiling cooking at low pressure or full boiling cooking at high pressure as needed, that is, to realize multi-stage full boiling cooking at pressure, thereby meeting the user's cooking needs for different ingredients.

[0074] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. An electric rice cooker with multi-stage pressure full boiling cooking, comprising a pot body (1) and a cover body, wherein the cover body is detachably covered on the pot body (1), characterized in that: The cover body is provided with a second exhaust hole and a third exhaust hole which are connected to the inside of the pot body (1); the electric rice cooker with multi-stage pressure full boiling cooking further comprises a first exhaust valve assembly arranged corresponding to the second exhaust hole and a second exhaust valve assembly arranged corresponding to the third exhaust hole; Wherein, when the electric rice cooker is in a pressure-free full-boiling cooking state, the first exhaust valve assembly opens the second exhaust hole and the second exhaust valve assembly closes the third exhaust hole; When the electric rice cooker is in a low-pressure full-boiling cooking state, the first exhaust valve assembly closes the second exhaust hole and the second exhaust valve assembly closes the third exhaust hole, the pressure of the second exhaust valve assembly is set to the low-pressure full-boiling cooking pressure, and the second exhaust valve assembly is pushed open when the pressure of the pot body (1) is greater than the pressure of the second exhaust valve; When the electric rice cooker is in a high-pressure full-boiling cooking state, the first exhaust valve assembly closes the second exhaust hole and the second exhaust valve assembly closes the exhaust hole, the pressure of the second exhaust valve assembly is set to a low-pressure full-boiling cooking pressure, and the first exhaust valve assembly is pushed open when the pressure in the pot body (1) is greater than the pressure of the first exhaust valve assembly, or the second exhaust valve assembly is pushed open when the pressure in the pot body (1) is greater than the pressure of the second exhaust valve assembly.

2. The electric rice cooker with multi-stage pressure full boiling cooking according to claim 1, characterized in that: The first exhaust valve assembly comprises a weight seat (29), a weight cover (30), a weight (31) and a first solenoid valve (32); the weight seat (29) is arranged at the second exhaust hole; the weight cover (30) covers the weight seat (29); the weight (31) is located between the weight seat (29) and the weight cover (30); and the first solenoid valve (32) is used to drive the weight (31) to move to open the second exhaust hole or close the second exhaust hole.

3. The electric rice cooker with multi-stage pressure full boiling cooking according to claim 1, characterized in that: The second exhaust valve assembly comprises a valve seat (33), a valve core, a valve cover (35) and a second drive assembly, wherein the valve seat (33) is arranged at the third exhaust hole, the valve cover (35) covers the valve seat (33), the valve core is located between the valve seat (33) and the valve cover (35), and is used to open or close the third exhaust hole, and the second drive assembly is used to adjust the pressure of the valve core.

4. The electric rice cooker with multi-stage pressure full boiling cooking according to claim 3, characterized in that: The valve core comprises a sealing cone (36), a second spring (34), and a pressure plate (38) which are arranged in sequence from the valve seat (33) to the valve cover (35); the sealing cone (36) is used to open or close the third exhaust hole; the second driving component is arranged on the cover body, and is used to drive the pressure plate (38) to move so as to adjust the pressure of the sealing cone (36).

5. The electric rice cooker with multi-stage pressure full boiling cooking according to claim 4, characterized in that: The second driving component comprises a second electromagnetic valve (39), a rocker arm (40) and a second movable arm (41); the second electromagnetic valve (39) is arranged on the cover body; the rocker arm (40) is swingably arranged on the cover body and connected to the second electromagnetic valve (39); the second movable arm (41) is movably arranged on the cover body; the rocker arm (40) swings under the drive of the second electromagnetic valve (39) to drive the second movable arm (41) to move; the second movable arm (41) presses the pressure plate (38) to make the pressure plate (38) move.

6. The electric rice cooker with multi-stage pressure full boiling cooking according to claim 1, characterized in that: The electric rice cooker with multi-stage pressure full boiling cooking further comprises a first driving component, a connecting rod (4) and an annular lock buckle (7), wherein the first driving component is arranged on the cover body, one end of the connecting rod (4) is fixed on the cover body and can rotate around the center of the pot body (1), and the annular lock buckle (7) is connected to the other end of the connecting rod (4), and the connecting rod (4) rotates under the drive of the first driving component and drives the annular lock buckle (7) to rotate, so that the pot teeth on the annular lock buckle (7) and the pot teeth on the pot body (1) are in a locked state or an unlocked state.

7. The electric rice cooker with multi-stage pressure full boiling cooking according to claim 6, characterized in that: The cover body comprises a cover plate (2) and an inner lining (3) which are arranged in sequence from close to the pot body (1) to far away from the pot body (1); the connecting rod (4) is located on the other side of the inner lining (3) opposite to the cover plate (2); one end of the connecting rod (4) is fixed on the inner lining (3); the annular lock buckle (7) is located below the inner lining (3) and is arranged around the cover plate (2) and the pot body (1); a first suspension shaft is provided on the annular lock buckle (7); an arc-shaped avoidance groove (9) is provided on the inner lining (3); the first suspension shaft passes through the avoidance groove (9) to be connected to the other end of the connecting rod (4).

8. The electric rice cooker with multi-stage pressure full boiling cooking according to claim 6, characterized in that: The connecting rod (4) is provided with a slot (5), and the first driving assembly comprises a driving member (10) and a transmission member (11), both of which are located in the slot (5), the driving member (10) is fixed on the cover body, and the transmission member (11) is provided on the driving member (10) and connected to the connecting rod (4), and the transmission member (11) drives the connecting rod (4) to rotate under the drive of the driving member (10).

9. The electric rice cooker with multi-stage pressure full boiling cooking according to claim 6, characterized in that: The cover body comprises a cover plate (2) and an inner lining (3) which are arranged in sequence from close to the pot body (1) to far away from the pot body (1); the connecting rod (4) is located on the other side of the inner lining (3) opposite to the cover plate (2); the electric rice cooker with multi-stage pressure full boiling cooking also comprises an anti-foolproof component, which limits the connecting rod (4) when the cover plate (2) is not installed on the inner lining (3).

10. The electric rice cooker with multi-stage pressure full boiling cooking according to claim 9, characterized in that: The foolproof component comprises a first movable rod (12) and a first spring (14); one end of the first movable rod (12) is located on the side where the connecting rod (4) is located and a baffle (13) is provided thereon; the other end of the first movable rod (12) is movably inserted through the lining (3) to between the lining (3) and the cover plate (2) and abuts against the cover plate (2); the first spring (14) is sleeved on the other end of the first movable rod (12); when the cover plate (2) is not installed on the lining (3), the first spring (14) drives the first movable rod (12) to move in a direction toward the pot body (1) so that the baffle (13) limits the connecting rod (4).

11. The electric rice cooker with multi-stage pressure full boiling cooking according to claim 6, characterized in that: The connecting rod (4) is provided with a magnetic member (15), and the electric rice cooker with multi-stage pressure full boiling cooking further comprises a circuit board (16), a first magnetic proximity switch (17) and a second magnetic proximity switch (18), wherein the circuit board (16) is provided on the cover body, the first magnetic proximity switch (17) and the second magnetic proximity switch (18) are provided on the circuit board (16) and are electrically connected to the circuit board (16), the first magnetic proximity switch (17) is used to send an unlocking state signal to the circuit board (16) when sensing the magnetic member (15), and the second magnetic proximity switch (18) is used to send a locking state signal to the circuit board (16) when sensing the magnetic member (15).

12. The electric rice cooker with multi-stage pressure full boiling cooking according to claim 6, characterized in that: The electric rice cooker with multi-stage pressure full boiling cooking further comprises a magnetically sensitive float assembly, which is movably arranged on the cover body. When the annular lock buckle (7) and the pot body (1) are in a locked state, the magnetically sensitive float assembly can move relative to the cover body under the action of the pressure in the pot body (1) to limit the connecting rod (4), so that the annular lock buckle (7) remains in the locked state.

13. The electric rice cooker with multi-stage pressure full boiling cooking according to claim 12, characterized in that: The cover body is provided with a first exhaust hole and a movable hole, the magnetic sensitive float assembly comprises a magnetic sensitive float (19) and a first sealing ring (20), the first sealing ring (20) is provided on the cover body and covers the first exhaust hole, one end of the magnetic sensitive float (19) is passed through the first sealing ring (20), and the other end of the magnetic sensitive float (19) is movably passed through the movable hole, and the magnetic sensitive float (19) moves under the exhaust pressure of the first exhaust hole to limit the connecting rod (4).

14. The electric rice cooker with multi-stage pressure full boiling cooking according to claim 12, characterized in that: When the connecting rod (4) is rotated until the pot teeth on the annular lock buckle (7) are locked with the pot teeth on the pot body (1), a clearance position (6) is formed on one side of the connecting rod (4), and the magnetically sensitive float component moves to penetrate the clearance position (6) to limit the connecting rod (4).

15. The electric rice cooker with multi-stage pressure full boiling cooking according to claim 12, characterized in that: The electric rice cooker with multi-stage pressure full boiling cooking further comprises a circuit board (16) and a third magnetic proximity switch (21), wherein the circuit board (16) is arranged on the cover body, the third magnetic proximity switch (21) is arranged on the circuit board (16) and is electrically connected to the circuit board (16), and the third magnetic proximity switch (21) is used to sense the activity of the magnetic sensitive float assembly.

16. The electric rice cooker with multi-stage pressure full boiling cooking according to claim 6, characterized in that: The cover body comprises a cover plate (2) and an inner lining (3) which are arranged in sequence from close to the pot body (1) to far away from the pot body (1); the annular lock buckle (7) is located below the inner lining (3) and is arranged around the cover plate (2) and the pot body (1); a first sealed cavity that bears pressure is formed between the pot body (1), the annular lock buckle (7) and the cover plate (2); the electric rice cooker with multi-stage pressure full boiling cooking also comprises a pressure relief component, which connects the cover plate (2) and the inner lining (3) so that the cover plate (2) can float relative to the inner lining (3).

17. The electric rice cooker with multi-stage pressure full boiling cooking according to claim 16, characterized in that: The pressure relief assembly comprises a floating bracket (22), a second suspension shaft (25) and a second sealing ring (26); the floating bracket (22) is movably arranged on the inner liner (3); the second sealing ring (26) is sleeved on the second suspension shaft (25) and is located between the inner liner (3) and the cover plate (2); the cover plate (2) is fixed to the second suspension shaft (25) by a screw buckle; a second sealing cavity is formed between the cover plate (2), the second suspension shaft (25) and the second sealing ring (26).

18. The electric rice cooker with multi-stage pressure full boiling cooking according to claim 17, characterized in that: The second sealing ring (26) is also used to fold when the pressure in the pot body (1) reaches a preset overpressure relief pressure, so as to relieve overpressure.

19. The electric rice cooker with multi-stage pressure full boiling cooking according to claim 17, characterized in that: The electric rice cooker with multi-stage pressure full boiling cooking also includes an anti-overflow plate (27); the floating bracket (22) includes an upper floating bracket (23) and a lower floating bracket (24); the upper floating bracket (23) is movably arranged on the inner lining (3); the lower floating bracket (24) is mateably connected with the upper floating bracket (23); a heating wire (28) is arranged between the lower floating bracket (24) and the upper floating bracket (23); the cover plate (2) is in close contact with the lower floating bracket (24); and the anti-overflow plate (27) is in close contact with the cover plate (2).

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