CN107647771B - Pressure cooker - Google Patents
Pressure cooker Download PDFInfo
- Publication number
- CN107647771B CN107647771B CN201710965581.6A CN201710965581A CN107647771B CN 107647771 B CN107647771 B CN 107647771B CN 201710965581 A CN201710965581 A CN 201710965581A CN 107647771 B CN107647771 B CN 107647771B
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- Prior art keywords
- pressure relief
- pot cover
- pressure
- cooker
- switch device
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
- A47J27/0802—Control mechanisms for pressure-cookers
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
- A47J27/0804—Locking devices
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/36—Shields or jackets for cooking utensils minimising the radiation of heat, fastened or movably mounted
Abstract
The invention provides a pressure cooker which comprises a cooker body and a cooker cover, wherein the cooker cover is provided with an exhaust hole and a pressure relief valve, the pressure relief valve is arranged on the exhaust hole, the pressure cooker is also provided with a pressure relief driving device used for driving the pressure relief valve to be at least partially separated from the exhaust hole, a switch device used for controlling the pressure relief driving device and a switch resetting device capable of enabling the switch device to be switched from a closed state to an open state. According to the invention, by arranging the pressure relief driving device, the switch device and the switch reset device, a pressure relief function can be realized by shifting the switch device when a user uses the pressure relief device, and meanwhile, the reset of the switch device can be automatically realized in the process of opening the cover, so that the situation that the user forgets to turn on the switch device is prevented.
Description
Technical Field
The invention relates to a cooking device, in particular to an electric pressure cooker.
Background
At present, after food is cooked, the pressure in the pot is very high in a common electric pressure cooker on the market, a safety floater is arranged on the pot cover and ascends to penetrate through a push rod through hole in a push rod, the push rod through hole cannot move horizontally in the radial direction, and the pot cover cannot be opened at the moment, so that the safety protection effect is achieved. However, if the user wants to add some seasoning during the cooking process or wants to open the lid quickly after cooking, the user must manually exhaust the food because the time for naturally cooling and depressurizing is very long.
At present, manual exhaust generally adopts the following modes:
when the hand leaves, the gravity valve contacts with the sealing end face of the exhaust pipe under the action of gravity and is in a sealing state, the exhaust mode is unsafe, the sprayed steam easily scalds the hand, and the air can be exhausted only by pressing the button all the time.
Disclosure of Invention
The invention provides the pressure cooker which is high in safety and convenient to relieve pressure in order to overcome at least one defect in the prior art.
In order to solve the technical problems, the invention adopts the technical scheme that:
a pressure cooker comprises a cooker body and a cooker cover, wherein an exhaust hole and a pressure relief valve are arranged on the cooker cover, the pressure relief valve is arranged on the exhaust hole, the pressure cooker is further provided with a pressure relief driving device used for driving the pressure relief valve to be at least partially separated from the exhaust hole, a switch device used for controlling the pressure relief driving device and a switch reset device capable of enabling the switch device to be converted into an open state from a closed state.
The pressure relief driving device comprises a pressure lever, one end of the pressure relief lever is a supporting end and is arranged below the pressure relief valve, the other end of the pressure relief lever is a pressure relief stressed end, and a pressure relief fulcrum is arranged between the supporting end and the pressure relief stressed end.
The pressure relief stress end is provided with a pressure relief concave position and a pressure relief convex position, and the switch device is provided with a pressure relief convex column capable of applying downward pressure to the pressure relief convex position.
The pressure relief driving device is further provided with a pressure relief elastic piece capable of enabling the supporting end to move downwards.
A locking device which can lock the pot cover when the pot cover is completely covered is also arranged between the pot body and the pot cover.
The locking device comprises a bolt device and a stopping device, and when the pot cover is in a complete covering state, the bolt device prevents the pot cover from rotating relative to the pot body under the limit of the stopping device.
The bolt device is arranged on the pot cover, and the stop device is arranged on the pot body.
The bolt device comprises a bolt connecting rod, one end of the bolt connecting rod is provided with a bolt head, the other end of the bolt connecting rod is a bolt stressed end, and a bolt fulcrum is arranged between the bolt head and the bolt stressed end.
The pressure cooker comprises a pressure cooker body, a bolt head, a stopping device and a pressure cooker cover, wherein the bolt head is columnar, the stopping device is in a hole shape or a bulge capable of limiting the bolt head, a middle ring is arranged on the pressure cooker body, and the stopping device is arranged on the middle ring.
The locking device is also provided with a first elastic element which can drive the bolt head to move towards the stop device.
The switch device is acted with the bolt stress end, when the switch device is in an opening state, the switch device exerts downward acting force on the bolt stress end to enable the bolt head to move towards the direction away from the stop device, and when the switch device is in a closing state, the bolt head moves towards the direction close to the stop device under the action of the first elastic piece.
The bolt stressed end comprises a bolt concave position and a bolt convex position, the switch device is provided with a locking convex column, when the switch device is in a closed state, the locking convex column exerts downward acting force on the bolt convex position of the bolt stressed end, and when the switch device is in an open state, the locking convex column is positioned at the bolt concave position of the bolt stressed end.
The pressure cooker pot body still is equipped with the heat preservation cover, and the heat preservation cover is outer along including big round edge and little round edge, switch resetting means includes the push rod, and the one end of push rod is equipped with the push rod head, and the other end is equipped with the pull-back device, switching device is last to be equipped with the connecting piece that corresponds with the pull-back device, under the complete lid of pot cover closed state, the push rod head is located little round edge position, and the pot cover is at the in-process of opening, the push rod head slides to big round edge by little round edge to pull switching device through the pull-back device and remove.
The pull-back device is a square hole, and the connecting piece comprises an extension arm and a connecting column which is arranged on the extension arm and can be inserted into the square hole.
According to the invention, by arranging the pressure relief driving device, the switch device and the switch reset device, a pressure relief function can be realized by shifting the switch device when a user uses the pressure relief device, and meanwhile, the reset of the switch device can be automatically realized in the process of opening the cover, so that the situation that the user forgets to turn on the switch device is prevented.
Drawings
FIG. 1 is an exploded view of the lid of the present invention;
FIG. 2 is a schematic view of the structure of the lid liner assembly of the present invention;
FIG. 3 is a schematic structural view of the pot body of the present invention;
FIG. 4 is a schematic view of the construction of the locking device of the present invention;
FIG. 5 is a schematic view of the switchgear of the present invention;
FIG. 6 is a schematic diagram of the switch reset apparatus of the present invention;
FIG. 7 is a schematic view of a pressure relief driving device according to the present invention;
FIG. 8 is a schematic structural view showing an initial closing position of the lid of the present invention;
fig. 9 isbase:Sub>A sectional view ofbase:Sub>A portion of the switch resetting means, i.e.,base:Sub>A-base:Sub>A' in fig. 8, in the initial position of closing the lid of the pot according to the present invention;
fig. 10 is a sectional view of a locking means portion, i.e., B-B' in fig. 8, in an initial position of closing the lid of the pot cover in accordance with the present invention;
FIG. 11 is a sectional view of a portion of the pressure-releasing driving means of the lid of the initial closing position of the lid of the present invention;
fig. 12 is a schematic structural view of the lid of the present invention in a completely closed state (i.e., in a sealed state);
fig. 13 is a sectional view of a portion of the switch resetting means, i.e., E-E' in fig. 8, in a state where the pot lid is completely closed according to the present invention;
figure 14 is a cross-sectional view of the locking means portion, i.e., F-F' in figure 8, in the fully closed condition of the lid according to the present invention;
fig. 15 is a sectional view of a pressure-releasing driving means portion in a state where the lid is completely closed according to the present invention;
fig. 16 is a sectional view of a portion of the switch reset means in a state where the lid is completely closed and the switch means is in a closed state in accordance with the present invention;
fig. 17 is a sectional view of a locking means portion in a state where the lid of the present invention is completely closed and the opening and closing means is in a closed state;
fig. 18 is a sectional view of a part of the pressure-releasing driving means in a state where the lid is completely closed and the opening and closing means is in a closed state according to the present invention;
fig. 19 is a schematic structural view in the lid opening process of the pot lid of the present invention;
fig. 20 is a sectional view of a switch resetting means portion in the lid opening process of the pot lid of the present invention;
fig. 21 is a sectional view of a locking device portion in the process of opening the lid of the pot lid of the present invention;
fig. 22 is a sectional view of a part of the pressure-releasing driving means in the lid-opening process of the pot lid of the present invention.
Reference numerals:
the pot body 1, the shell 11, the middle ring 111, the locking hole 112, the heat preservation cover 12, the pot teeth 121, the big round edge 122, the small round edge 123 and the pot container 13
Switch device 4, locking convex column 41, connecting piece 42, extension arm 421 and pressure relief convex column 43
Switch resetting device 5, push rod 51, push rod head 52, pull-back device 53, action point 531, second elastic piece 54 and push rod through hole 55
The pressure relief driving device 6, the pressure relief rod 61, the support end 62, the pressure relief force bearing end 63, the pressure relief fulcrum 64, the pressure relief latch 65, the pressure relief concave 66, the pressure relief convex 67, and the pressure relief elastic element 68
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
Example 1
As shown in fig. 1 to 3, a pressure cooker comprises a cooker body 1 and a cooker cover 2, wherein the cooker body 1 comprises a housing 11 and a heat-insulating cover 12, the heat-insulating cover 12 is made of a metal material, a cooker liner 13 is arranged in the heat-insulating cover 12, the cooker liner 13 is used for containing food, a plurality of cooker teeth 121 are arranged on the outer edge of the upper end of the heat-insulating cover 12, the cooker teeth 121 enable the outer edge of the heat-insulating cover 12 to form a large circular edge 122 and a small circular edge 123 with different diameters, the large circular edge 122 is defined by the outer edge of the cooker teeth 121, and the small circular edge 123 is defined by the outer edge of the heat-insulating cover 12 between the cooker teeth 121 and the small circular edge 123. The pot cover 2 is provided with the fastening teeth, the number of the fastening teeth corresponds to the number of the pot teeth 121, when the pot cover is in a completely covered state, the fastening teeth on the pot cover 2 correspond to the positions of the pot teeth 121, and the fastening teeth fasten the pot teeth 121 to play a role in sealing the pot cover 2; when the button teeth on the cooker cover 2 and the cooker teeth 121 are in the staggered position, the cooker cover 2 is released from the covering state, and at the moment, the cooker cover 2 and the cooker body 1 can be separated only by lifting the cooker cover 2.
The shell 11 is provided with a middle ring 111 around the heat preservation cover 12, and the middle ring 111 can receive water leaking from the pot container 13 or the pot cover 2 on one hand and provides a certain space for the arrangement of other components on the other hand.
The pot cover 2 comprises a steel cover component 21, an inner lining component 22 and an outer cover component 23, the steel cover component 21 is generally of a rigid structure and has high strength, the fastening teeth are arranged on the outer edge of the steel cover component 21, the fastening teeth are formed by inward turning of the outer edge of the part of the steel cover component 21, the inner lining component 22 is arranged on the steel cover component 21 and is attached to the steel cover component 21, the outer cover component 23 is arranged on the inner lining component 22 and is fastened with the inner lining component 22, and a handle and a pressure release valve are generally arranged on the outer cover component 23.
A locking device 3 which can lock the pot cover 2 when the pot cover 2 is completely covered is arranged between the pot body 1 and the pot cover 2.
As shown in fig. 4, the locking device 3 comprises a latch device 31 and a stop device 32, when the lid 2 is in the fully closed state, the latch device 31 can prevent the lid 2 from rotating relative to the pot body 1 under the limit of the stop device 32, so that the lid 2 can be prevented from being opened accidentally in the high-pressure state.
The bolt device 31 is arranged on the cooker cover 2, and the stop device 32 is arranged on the cooker body 1.
The bolt device 31 comprises a bolt connecting rod 311, one end of the bolt connecting rod 311 is provided with a bolt head 312, the other end is a bolt stressed end 313, and a bolt fulcrum 314 is arranged between the bolt head 312 and the bolt stressed end 313. The latch link 311 is preferably a strip-shaped sheet structure, and the latch link 311 may have a corresponding shape or a bend or curvature, which may better match the shape of the lid 2. The latch head 312 is cylindrical, the stop device 32 is a hole or a protrusion capable of limiting the position of the latch head 312, and in this embodiment, the stop device 32 is preferably configured as a hole structure disposed on the middle ring 111, that is, as the locking hole 112.
Specifically, the locking device 3 is disposed between the inner liner assembly 22 and the outer cover assembly 23, the outer edge of the inner liner assembly 22 is provided with a first protrusion 221, the outer cover assembly 23 is provided with a second protrusion 231 corresponding to the first protrusion 221, the first protrusion 221 and the second protrusion 231 are buckled together, the first protrusion 221 is provided with a first through hole 222, the latch head 312 extends from the first through hole 222, the latch fulcrum 314 is connected with the pot cover 2, and the latch link 311 can rotate around the latch fulcrum 314.
The locking device 3 is further provided with a first elastic element 33 capable of driving the latch head 312 to move towards the stop device 32, and the first elastic element 33 is preferably a spring or a spring plate or a rubber band. The first elastic element 33 may be arranged above the latch head 312, above the latch head 312 or below the latch force-bearing end 313, or in any case the first elastic element 33 serves to urge the latch head 312 in the direction of the stop 32.
As shown in fig. 5 and 10, the pot cover 2 is further provided with a switch device 4, and the switch device 4 is arranged on the pot cover and can slide on the pot cover 2. The switch device 4 acts on the bolt force bearing end 313, when the switch device 4 is in an open state, the switch device 4 applies a downward acting force to the bolt force bearing end 313 to enable the bolt connecting rod 311 to rotate around the bolt fulcrum 314 so as to drive the bolt head 312 to move towards a direction far away from the stop device 32, and further the locking of the pot cover 2 is released, and the pot cover 2 can be rotated at the moment; when the switch device 4 is in the closed state, the latch head 312 moves towards the direction close to the stop device 32 under the action of the first elastic element 33, so that the latch head 312 can extend into the locking hole 112 on the middle ring, and the pot cover is locked, and the pot cover 2 cannot be rotated at this time.
Preferably, the latch force bearing end 313 includes a latch notch 3131 and a latch protrusion 3132, the latch notch 3131 is disposed near the latch fulcrum 314, and the latch protrusion 3132 is disposed away from the latch fulcrum 314. The switch device 4 is provided with a locking stud 41, when the switch device 4 is in a closed state, the locking stud 41 applies a downward acting force on a bolt boss 3132 of the bolt force bearing end 313 to drive the bolt head 312 to move away from the stop device 32; when the switch device 4 is in the open state, the locking stud 41 is located at the latch recess 3131 of the latch force bearing end 313, and at this time, the locking stud 41 does not apply a force to the latch force bearing end 313, or the force applied is significantly less than the elastic force of the first elastic element 33 to the latch head 312, so that the latch head 312 can be driven to extend into the locking hole 112 by the first elastic element 33.
Besides, the pot cover 2 is also provided with a switch resetting device 5 which can change the switch device 4 from the off state to the on state.
As shown in fig. 6, the switch resetting device 5 includes a push rod 51, one end of the push rod 51 is provided with a push rod head 52, the other end of the push rod 51 is provided with a pull-back device 53, the switch device 4 is provided with a connecting piece 42 corresponding to the pull-back device 53, when the pot cover 2 is completely covered, the push rod head 52 is located at the position of the small circular edge 123, the pot cover is opened, the push rod head 52 sequentially passes through the small circular edge 123, the large circular edge 122 and the small circular edge 123, and when the push rod head 52 passes through the large circular edge 122, the push rod head 52 drives the push rod 51 to move radially outwards and pulls the switch device 4 to move through the pull-back device 53.
The sidewall of the second protrusion 231 is provided with a second through hole 2311 for the push rod head 52 to extend out, the push rod head 52 and the second protrusion 231 are provided with a second elastic element 54 capable of restoring the push rod head 52, and the second elastic element 54 is preferably a spring, a leaf spring or a rubber band.
Pull back device 53 is the quad slit, connecting piece 42 includes extension arm 421 and locates on the extension arm 421 and can insert the spliced pole 422 of quad slit, the length of quad slit generally equals or approximately equals with the radius difference value of big round edge 122 and little round edge 123, the quad slit possess one can with the action point 531 of spliced pole 422 effect, obviously, the quad slit can be changed with spliced pole 422's position, and the structure after the change can realize the switch reset function equally.
The pot cover 2 is also provided with a floater 26, the push rod 51 is provided with a push rod through hole 55, the matching relationship between the push rod through hole 55 and the floater 26 is the same as the prior art, namely the diameter of the middle part of the floater 26 is small and the diameter of the lower end is large, in a natural state, the middle part of the floater 26 can pass through the push rod through hole 55, at the moment, the push rod 51 can horizontally and radially move, and when the internal pressure of the pressure cooker is increased to a certain degree, the floater 26 rises and the lower end of the floater 26 clamps the push rod 51 to organize the push rod 51 to horizontally move.
Example 2
In this embodiment, the structural form of the plug device 31 is improved on the basis of embodiment 1, specifically, the plug device 31 is disposed on the pot body 1, the stopping device 32 is disposed on the pot cover 2, and the plug device 31 is pulled to realize the relative movement between the plug device and the stopping device 32, thereby realizing the locking and unlocking of the pot cover 2.
Example 3
In this embodiment, the structural form of the plug head and the stop means is improved on the basis of embodiment 1, specifically, the plug head and the stop means may be toothed structures capable of cooperating with each other, including a single-tooth structure and a multi-tooth structure, or may be other structures capable of meshing with each other.
Example 4
In this embodiment, the structural configuration of the switch device is improved on the basis of embodiment 1, and specifically, the pot cover is further provided with a switch device, the switch device is acted on the stressed end of the latch, when the switch device is in an on state, the switch device applies a downward acting force to the stressed end of the latch to move the latch head in a direction away from the stopper device, and when the switch device is in an off state, the switch device applies an upward acting force to the stressed end of the latch to move the latch head in a direction close to the stopper device.
In this embodiment, the application of upward or downward force to the force-bearing end of the plug is accomplished by the switch device, in which case the cooperation of the first elastic member 33 is not required, so that the structure of the pressure cooker can be further simplified.
Example 5
On the basis of embodiment 1, be equipped with exhaust hole 24 and relief valve 25 on the pressure cooker pot cover 2, the exhaust hole is located on pot cover 2 to with the pot UNICOM, relief valve 25 is installed in the upper end of exhaust hole 24, under the natural state, relief valve 25 presses on exhaust hole 24, plays the sealing function, prevents that the pressure in the pot from revealing, when needs pressure release, can mention relief valve 25 and make relief valve 25 and the gas vent separation on the exhaust hole 24, the inside atmospheric pressure of pressure cooker alright discharge in order to pass through the clearance between exhaust hole 24 and the relief valve 25 this moment.
In this embodiment, the pressure cooker is further provided with a pressure relief driving device 6, as shown in fig. 7, the pressure relief driving device 6 includes a pressure relief rod 61, one end of the pressure relief rod 61 is a support end 62, and is arranged below the pressure relief valve 25, so as to support the pressure relief valve 25 during pressure relief, the other end of the pressure relief rod 61 is a pressure relief stress end 63, a pressure relief fulcrum 64 is arranged between the support end 62 and the pressure relief stress end 63, the pressure relief fulcrum 64 is arranged on the cooker lid through a pressure relief bolt 65, and is particularly arranged between the inner liner component 22 and the outer lid component 23, and the pressure relief bolt 65 passes through the pressure relief fulcrum 64 to install the pressure relief driving device on the cooker lid. When downward force is applied to the pressure relief stress end 63, the support end 62 tilts upwards and drives the pressure relief valve 25 to move upwards to separate the pressure relief valve 25 from the exhaust port on the exhaust hole 24, so that pressure relief can be realized at the moment, when upward force is applied to the pressure relief stress end 63, the support end 62 moves downwards, the pressure relief valve 25 is pressed on the exhaust hole 24 again under the action of self gravity, and the exhaust hole 24 is sealed again.
Further, can use switching device 4 to realize the control to pressure release drive arrangement 6, specifically, on embodiment 1's basis, can also set up pressure release projection 43 again on switching device 4, set up pressure release concave position 66 and pressure release convex position 67 at pressure release stress end 63 simultaneously, pressure release concave position 66 sets up the position that is close to pressure release fulcrum 64, and pressure release convex position 67 sets up the position of keeping away from pressure release fulcrum 64, pressure release drive arrangement 6 still is equipped with the pressure release elastic component 68 that can drive support end 62 downward displacement, and pressure release elastic component 68 can be structures such as spring, shell fragment or rubber band. The pressure relief elastic member 68 may be disposed above the side near the support end 62 or below the side near the pressure relief force receiving end 63.
When the switch device 4 is in the closed state, the pressure relief convex column 43 applies a downward acting force to the pressure relief convex position 67 of the pressure relief force bearing end 63, the support end 62 tilts upward and drives the pressure relief valve 25 to move upward, so that the pressure relief valve 25 is separated from the exhaust port on the exhaust hole 24, and at the moment, the pressure relief can be realized. When the switch device 4 is in the open state, the pressure relief convex column 43 is located at the pressure relief concave position 66 of the pressure relief stressed end 63, at this time, the pressure relief convex column 43 does not apply force to the pressure relief stressed end 63, or the applied force is significantly smaller than the elastic force of the pressure relief elastic piece 68 to the support end 62, so that the support end 62 can move downwards through the pressure relief elastic piece 68, the pressure relief valve 25 presses the exhaust hole 24 again under the action of self gravity, and the exhaust hole 24 is sealed again.
The working principle of the patent is as follows:
as shown in fig. 8 to 11, the pot cover 2 is placed at the opening position of the pot body, i.e. the initial position of closing the pot cover, at this time, the push rod head 52 of the switch resetting device 5 is located at the small circular edge 123 of the heat-insulating cover 12, the pot cover 2 is rotated counterclockwise, at this time, the latch head 312 of the latch connecting rod 311 presses the middle ring surface to slide, and the push rod head 52 moves toward the large circular edge 122 along the small circular edge 123 of the heat-insulating cover to drive the push rod 51 to move radially outward in the horizontal direction, at the same time, the pull-back device 53 on the switch resetting device 5 drives the switch device 4 to move, so that the switch device is in the open state, i.e. the locking convex column 41 of the switch device 4 is located at the latch concave position 3131 of the locking device 3, the convex column 43 of the switch device 4 is located at the concave position 66 of the pressure relief driving device 6, at this time, the latch head 312 is directly or indirectly applied with a downward force by the first elastic member 33, and likewise, the support end 62 of the driving device 6 is directly or indirectly applied with a downward pressure relief force, so that the pressure relief vent hole 25 is pressed on the vent hole 24.
As shown in fig. 12 to 15, when the pot cover 2 is rotated to a completely covered state, that is, when the fastening teeth on the pot cover 2 and the pot teeth 121 on the heat-insulating cover 12 are fastened correspondingly, the push rod head 52 of the switch resetting device 5 is also located at the small circular edge 123 of the heat-insulating cover 12, the latch head 312 of the latch link 311 is inserted into the hole-shaped stopper 32 provided on the middle ring under the action of the first elastic element 33, so as to lock the pot cover 2, the pressure release valve 25 is pressed against the exhaust hole 24, and the pressure pot is in a sealed state.
In the process of cooking food in the pressure cooker, when the internal air pressure of the pressure cooker reaches a certain degree, for example, 4Kpa, the float on the pressure cooker lid 2 rises and blocks the push rod 51, at this time, the push rod 51 cannot displace in the horizontal direction, and the push rod head 52 is blocked by the large round edge 122, so that the pressure cooker lid 2 cannot be rotated.
As shown in fig. 16 to 18, when pressure relief is required, the switch device 4 is toggled to make the switch device 4 in a closed state, that is, the locking convex column 41 of the switch device 4 is located at the bolt convex position 3132 of the locking device 3, the pressure relief convex column 43 of the switch device 4 is located at the pressure relief convex position 67 of the pressure relief driving device 6, at this time, the locking convex column 41 applies a downward force to the bolt convex position 3132, the bolt head 312 is tilted to be separated from the hole-shaped stopping device 32 on the middle ring, locking of the lid is released, similarly, the pressure relief convex column 4 also applies a downward force to the pressure relief convex position 67 of the pressure relief driving device 6, the supporting end 62 of the pressure relief driving device 6 is tilted to make the pressure relief valve 25 at least partially separated from the exhaust hole 24, the sealing of the exhaust hole 24 is released, the pressure relief of the pressure cooker starts, at this time, the connecting column 422 on the extending arm 421 of the switch device 4 is close to the action 531 of the pullback device 53.
When the pressure is relieved to a certain degree, the floater on the pot cover 2 descends, and the locking of the pot cover is further released.
As shown in fig. 19 to 22, when the pot lid 2 is rotated clockwise, the push rod 52 of the switch resetting device 5 moves from the small circular edge 123 to the large circular edge 122, at this time, the push rod 52 drives the push rod 51 to move radially outward in the horizontal direction, and the pull-back device 53 on the switch resetting device 5 drives the switch device 4 to move, so that the switch device 4 returns to the initial state of closing the lid again, the automatic resetting of the switch device 4 is completed, and the user is prevented from forgetting to reset the switch device 4 after opening the pot lid.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. A pressure cooker comprises a cooker body and a cooker cover, wherein the cooker cover is provided with an exhaust hole and a pressure relief valve, and the pressure relief valve is arranged on the exhaust hole;
a locking device capable of locking the pot cover in a fully covered state of the pot cover is further arranged between the pot body and the pot cover, the locking device comprises a bolt device and a stopping device, and when the pot cover is in the fully covered state, the bolt device stops the pot cover from rotating relative to the pot body under the limitation of the stopping device; the pot cover comprises a pot cover body, a pot cover body and a switch device, wherein the pot cover body is provided with a pot cover body, the switch device is arranged on the pot cover body, the pot cover body is provided with a first elastic piece, the switch device is arranged on the pot cover body, the first elastic piece is arranged at the bottom of the pot cover body, the second elastic piece is arranged at the bottom of the pot cover body, the switch device is arranged at the bottom of the pot cover body, the pot cover body is provided with a second elastic piece, the first elastic piece is arranged at the bottom of the second elastic piece, the second elastic piece is arranged at the bottom of the second elastic piece, and the second elastic piece is connected with the first elastic piece;
the pressure relief driving device comprises a pressure lever, one end of the pressure relief lever is a supporting end and is arranged below the pressure relief valve, the other end of the pressure relief lever is a pressure relief stressed end, and a pressure relief fulcrum is arranged between the supporting end and the pressure relief stressed end.
2. The pressure cooker according to claim 1, wherein said pressure relief force receiving end is provided with a pressure relief concave portion and a pressure relief convex portion, and said switch device is provided with a pressure relief convex pillar capable of applying a downward pressure to said pressure relief convex portion.
3. The pressure cooker according to claim 2, wherein said pressure relief driving means is further provided with a pressure relief elastic member capable of moving said support end downward.
4. The pressure cooker as claimed in claim 1, wherein the plug head is cylindrical, the stopping means is a hole or a protrusion capable of limiting the plug head, a middle ring is provided on the cooker body, and the stopping means is provided on the middle ring.
5. Pressure cooker according to claim 1, characterized in that said locking means are further provided with a first elastic element able to drive the movement of said latch head towards the stop means.
6. The pressure cooker of claim 1, wherein the latch force-bearing end includes a latch recess and a latch projection, and the switch device is provided with a locking projection, the locking projection exerting a downward force on the latch projection of the latch force-bearing end when the switch device is in the closed state, and the locking projection being located at the latch recess of the latch force-bearing end when the switch device is in the open state.
7. The pressure cooker as claimed in claim 1, wherein the pressure cooker body is further provided with a heat-insulating cover, the outer edge of the heat-insulating cover comprises a large circular edge and a small circular edge, the switch resetting device comprises a push rod, one end of the push rod is provided with a push rod head, the other end of the push rod is provided with a pull-back device, the switch device is provided with a connecting piece corresponding to the pull-back device, when the cooker cover is completely covered, the push rod head is located at the small circular edge, and when the cooker cover is opened, the push rod head slides from the small circular edge to the large circular edge and pulls the switch device to move through the pull-back device.
8. The pressure cooker as claimed in claim 7, wherein the pull-back means is a square hole, and the connecting member includes an extension arm and a connecting post provided on the extension arm and capable of being inserted into the square hole.
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| CN201710965581.6A CN107647771B (en) | 2017-10-17 | 2017-10-17 | Pressure cooker |
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| CN201710965581.6A CN107647771B (en) | 2017-10-17 | 2017-10-17 | Pressure cooker |
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| CN107647771B true CN107647771B (en) | 2023-03-24 |
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