CN108324096B - Quick exhaust assembly of pressure cooker and pressure cooker - Google Patents
Quick exhaust assembly of pressure cooker and pressure cooker Download PDFInfo
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- CN108324096B CN108324096B CN201710038079.0A CN201710038079A CN108324096B CN 108324096 B CN108324096 B CN 108324096B CN 201710038079 A CN201710038079 A CN 201710038079A CN 108324096 B CN108324096 B CN 108324096B
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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
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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
- A47J36/38—Parts, details or accessories of cooking-vessels for withdrawing or condensing cooking vapors from cooking utensils
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Abstract
The invention provides a quick exhaust component of a pressure cooker and the pressure cooker, comprising: the cooker cover is buckled on the cooker body and forms a closed cooking cavity with the cooker body, and an exhaust port for communicating the cooking cavity with the external environment is arranged on the cooker cover; the quick exhaust assembly of the pressure cooker further comprises: the impeller is positioned in the cooking cavity and is in pivot fit with the pot cover; and the driving unit is used for driving the impeller to rotate, wherein the impeller is of a rotary structure. According to the rapid exhaust assembly of the pressure cooker, the impeller which is in pivot fit with the cooker cover is arranged in the cooking cavity, when the exhaust port is opened to exhaust and reduce pressure after cooking is finished, high-pressure steam and bubbles in the cooker body pass through the impeller in advance and are exhausted through the exhaust port, so that gas and liquid are separated, the anti-overflow and rapid pressure reduction of the pressure cooker are realized, the rapid opening of the pressure cooker is realized, and the use experience of a user is improved.
Description
Technical Field
The invention relates to the field of domestic electric appliances, in particular to a quick exhaust assembly of a pressure cooker and the pressure cooker.
Background
In the related art, after the pressure cooker finishes cooking, a certain pressure still exists, the cooker cover can be opened to take out food after complete pressure relief, and a method generally adopted is to open the cover when the pressure is restored to atmospheric pressure after the food in the cooker is cooled, but a user needs to wait for a long time, for example, porridge cooking, and the time for opening the cover can be as long as 40min to 60 min; and another method is to open the exhaust port to exhaust and reduce the pressure, the pressure reduction time of the method only needs 2min to 3min, but not all kinds of food are applicable, for the food with higher viscosity such as porridge, when the exhaust port is opened to carry out rapid pressure relief, because the viscosity is too high, a large amount of bubbles can be generated, a relatively serious overflow pot phenomenon can occur, the overflow amount can reach one third of the original food, and in the rapid exhaust, relatively large noise can be generated, therefore, how to provide a pressure cooker which can be opened quickly and has relatively small pressure relief noise when cooking viscous food, which becomes the problem to be solved urgently at present.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
To this end, it is an object of the present invention to provide a quick venting assembly for a spill-proof pressure cooker.
Another object of the present invention is to provide a pressure cooker.
In view of the above, according to one object of the present invention, the present invention provides a quick venting assembly for a pressure cooker, comprising: the cooker cover is buckled on the cooker body and forms a closed cooking cavity with the cooker body, and an exhaust port for communicating the cooking cavity with the external environment is arranged on the cooker cover; the quick exhaust assembly of the pressure cooker further comprises: the impeller is positioned in the cooking cavity and is in pivot fit with the pot cover; and the driving unit is used for driving the impeller to rotate, wherein the impeller is of a rotary structure.
The invention provides a quick exhaust component of a pressure cooker, which is characterized in that an impeller of a rotary structure which is pivoted and matched with a cooker cover is arranged in a cooking cavity, when the cooking is finished and an exhaust port is opened for exhausting and decompressing, high-pressure steam and bubbles in the cooker body firstly pass through the impeller and then are exhausted through the exhaust port, and when the steam and the bubbles pass through the impeller, a driving unit drives the impeller to rotate at high speed, the impeller rotates to generate centrifugal force, and the formula of the centrifugal force is as follows: fSeparation deviceM omega 2r, wherein, m is the quality, omega is angular velocity, r is the radius, under the unanimous condition of angular velocity and radius, because the quality of the liquid of equal volume is far greater than gaseous, consequently, the centrifugal force that liquid received will be far greater than gaseous for liquid can't pass through the impeller, but by impeller separation, and gaseous can be discharged by the exhaust hole through the impeller, thereby gas, liquid separation have been realized, and then realized that the anti-overflow of pressure cooker is with quick decompression, makeThe user needn't wait for the pressure cooker cooling decompression for a long time, the quick opening of pressure cooker has been realized, and then user's use experience has been promoted, and, it rotates to drive the impeller through drive unit, make the impeller possess the high rotational speed and produce the centrifugal force of capacity, and adopt the impeller of revolution mechanic, it all can't directly be got rid of by the gas vent to have guaranteed vapor and bubble on all directions, and simultaneously, the rotation effect of the impeller of revolution mechanic is steady, the centrifugal force difference of each border position is less, stable gas has, the liquid separation effect, on the other hand, because before gas emission, break the bubble through the impeller, make gas can be smooth and easy get rid of via discharging, thereby exhaust noise has been reduced.
In addition, the quick exhaust assembly of the pressure cooker in the above embodiment provided by the invention may further have the following additional technical features:
in the above technical solution, preferably, the rotation axis of the impeller is parallel to or coincident with the central axis of the pot body.
In this technical scheme, set up the axis of rotation of impeller into the central axis that is parallel or the coincidence with the pot body for the impeller can be perpendicular to the rotation of gas vent exhaust direction, and then makes the impeller direction of rotation can be perpendicular to air current flow direction, can realize gas, liquid separation better.
In any of the above technical solutions, preferably, an included angle a is formed between the rotation axis of the impeller and the central axis of the pot body, and the value range of a is as follows: a is more than 0 degree and less than or equal to 16 degrees.
In this technical scheme, set up the axis of rotation slope of impeller, make the impeller form an inclination in the culinary art intracavity, the impeller forms an contained angle A with the horizontal direction promptly, and when the impeller rotated at a high speed, the water that produces after the broken bubble of impeller was under the effect of centrifugal force, changes in directly getting back to on the liquid level of culinary art intracavity culinary art material.
In any one of the above technical solutions, preferably, a gap d1 is provided between the pot cover and the top end face of the impeller, and the value range of the gap d1 is: d1 is more than or equal to 0mm and less than or equal to 2 mm.
In this technical scheme, through setting the value range of the clearance d1 between pot cover internal surface and the impeller upper surface as: d1 is not less than 0mm and not more than 2mm, so that the water vapor and bubbles in the cooker body are prevented from being directly discharged from the exhaust port through the gap between the inner surface of the cooker cover and the upper surface of the impeller, and the anti-overflow effect of the quick exhaust assembly of the pressure cooker is ensured.
In any one of the above technical solutions, preferably, the driving unit includes: the rotating shaft is arranged on the pot cover; the impeller is synchronously connected to the rotating shaft.
In this technical scheme, the impeller passes through rotation axis connection on the pot cover for the rotation that the impeller can be smooth and easy, and this connected mode simple structure, required material is few, and assembly efficiency is high.
In any one of the above technical solutions, preferably, the driving unit further includes: the motor is arranged on the pot cover and positioned outside the closed cooking cavity, and is provided with an output shaft; the pot cover is provided with a through hole, and the rotating shaft penetrates through the through hole and is connected with the output shaft.
In the technical scheme, the impeller is driven to rotate by the motor, the rotation speed of the impeller is guaranteed, the separation effect of the impeller for separating gas and liquid can be effectively guaranteed, the motor is arranged above the pot cover and protected, and the motor is prevented from being in contact with the liquid and being damaged.
In any of the above technical solutions, preferably, a sealing member is disposed between the through hole and the rotating shaft.
In this technical scheme, through set up the sealing member between through-hole and axis of rotation to guarantee the seal nature in culinary art chamber, guarantee that pressure cooker can normal use.
In any of the above technical solutions, preferably, the inner side of the pot cover is provided with a dome extending towards the inside of the cooking cavity, the dome is annular, the upper surface of the impeller, the inner wall of the dome and the inner surface of the pot cover together enclose a cavity, and the exhaust port is communicated to the external environment from the cavity.
In this technical scheme, upper surface through the impeller, the cavity is formed to the inner wall of annular kuppe and the internal surface of pot cover, the impeller is rotatory in the air inlet department of this cavity, when opening the gas vent and exhaust, steam and the bubble that the culinary art produced can only pass through the impeller earlier and get into the cavity, then discharge via the gas vent, when steam and bubble pass through the impeller, the high-speed rotation of impeller makes the bubble breakage, the water that produces behind the broken bubble is attached to on the impeller, and on being thrown away towards the periphery under the effect of the great centrifugal force that the impeller rotation produced gets back to the liquid level of culinary art intracavity culinary art food again, steam then can follow the blade clearance of impeller and get into above-mentioned cavity, then discharge from the gas vent, and simultaneously, make the impeller can keep away from the pot cover internal surface, and then.
In any of the above technical solutions, preferably, a vertical projection of the lower port of the air guide sleeve on the impeller does not exceed the edge of the impeller; or the vertical projection of the lower port of the air guide sleeve on the impeller exceeds the edge of the impeller, the exceeding value is d2, and the value range of d2 is as follows: d2 is more than 0mm and less than or equal to 2 mm.
In the technical scheme, the vertical projection of the lower port of the air guide sleeve on the impeller is set to be not beyond the edge of the impeller, or the vertical projection of the lower port of the air guide sleeve on the impeller is set to be beyond the edge of the impeller, and the value range of the beyond value d2 is as follows: d2 is more than 0mm and less than or equal to 2mm, thereby preventing water vapor and bubbles in the pot body from directly entering the air guide sleeve from a gap between the impeller and the air guide sleeve and being discharged from the air outlet, and ensuring the anti-overflow effect of the quick exhaust assembly of the pressure cooker.
In any of the above technical solutions, preferably, the longitudinal cross-sectional shape of the air guide sleeve perpendicular to the direction of the pot cover is rectangular or trapezoidal.
In this solution, the shape of the pod may be cylindrical or truncated cone.
In any of the above technical solutions, preferably, the distance between the geometric center of the exhaust port and the rotation axis of the impeller is R1, the inner diameter of the exhaust port is d1, the radius of the impeller is R2, the radius of the upper port of the air guide sleeve is R1, and the radius of the lower port of the air guide sleeve is R2; wherein R1+ d1/2 is more than R1, and R2+4mm is more than or equal to R2.
In the technical scheme, the distance between the geometric center of the exhaust port and the rotation axis of the impeller is R1, the inner diameter of the exhaust port is d1, the radius of the impeller is R2, the radius of the upper port of the air guide sleeve is R1, and the radius of the lower port of the air guide sleeve is R2, so that the anti-overflow effect of the quick exhaust assembly of the pressure cooker can be ensured when the relation of R1+ d1/2< R1, and R2+4mm is more than or equal to R2 is met.
In any of the above solutions, preferably, the impeller is provided with radial blades.
In the technical scheme, the impeller with the radial blades can provide enough centrifugal force to separate the gas and the liquid from the steam and the bubbles in the pot body.
According to another object of the present invention, there is provided a pressure cooker comprising: and a quick exhaust component of the pressure cooker in any technical scheme.
The pressure cooker provided by the invention comprises the quick exhaust assembly of the pressure cooker in any technical scheme, so that the pressure cooker has all the beneficial effects of the quick exhaust assembly of the pressure cooker, and the description is omitted.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of a pressure cooker provided in accordance with an embodiment of the present invention, without the body of the pressure cooker;
FIG. 2 is a schematic diagram showing the construction of an impeller in the quick exhaust assembly of the pressure cooker shown in FIG. 1;
FIG. 3 shows a front view of the impeller shown in FIG. 2;
FIG. 4 is a schematic diagram illustrating the principle of gas-liquid separation of the quick exhaust assembly of the pressure cooker shown in FIG. 1;
FIG. 5 is a schematic diagram of the lid, impeller, dome and exhaust port of the quick exhaust assembly of the pressure cooker shown in FIG. 1;
FIG. 6 is a schematic diagram illustrating the impeller, the air guide sleeve and the exhaust port of the rapid exhaust assembly of the pressure cooker according to another embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating the impeller, the air guide sleeve and the exhaust port of the rapid exhaust assembly of the pressure cooker according to another embodiment of the present invention;
FIG. 8 is a schematic view showing the impeller and the exhaust port of the quick exhaust assembly of the pressure cooker according to another embodiment of the present invention;
fig. 9 shows a schematic structural view of a pressure cooker according to an embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 9 is:
1 pressure cooker, 10 pressure cooker rapid exhaust assembly, 12 cooker body, 14 cooker cover, 16 exhaust port, 18 guide cover, 20 impeller, 22 rotating shaft, 24 motor, 242 output shaft and 26 sealing element.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The quick venting assembly 10 of a pressure cooker and the pressure cooker 1 according to some embodiments of the present invention are described below with reference to fig. 1 to 9.
As shown in fig. 1 to 8, according to the first embodiment of the present invention, the present invention provides a quick exhaust assembly 10 for a pressure cooker, which includes a cooker body 12 and a cooker cover 14, wherein the cooker cover 14 is fastened on the cooker body 12 and encloses a sealed cooking cavity with the cooker body 12, and the cooker cover is provided with an exhaust port for communicating the cooking cavity with the external environment; the quick venting assembly (10) of the pressure cooker further comprises: an impeller 20 positioned in the cooking cavity and pivotally engaged with the lid 14; and a driving unit for driving the impeller 20 to rotate, wherein the impeller is a rotary structure.
The invention providesThe rapid exhaust assembly 10 of the pressure cooker, through setting up the impeller 20 cooperating with pivoting of pot cover 14 in the cooking cavity, when finishing cooking, high-pressure steam and bubble in the internal part of pot 12 will pass the impeller 20 in advance, and then discharge via the exhaust port 16, and when steam and bubble are passing the impeller 20, drive the impeller 20 to rotate at a high speed by the drive unit, and the impeller 20 is rotated and will produce the centrifugal force, and the formula of the centrifugal force is: fSeparation deviceM omega ^2r, wherein m is mass, omega is angular velocity, r is radius, when angular velocity is consistent with radius, because the mass of the liquid with the same volume is far larger than that of the gas, the centrifugal force applied to the liquid is far larger than that of the gas, the liquid can not pass through the impeller 20 but is separated by the impeller 20, and the gas can be discharged from the exhaust hole through the impeller 20, thereby realizing gas-liquid separation, further realizing anti-overflow and rapid decompression of the pressure cooker 1, enabling a user not to wait for the temperature reduction and decompression of the pressure cooker 1 for a long time, realizing the rapid opening of the pressure cooker 1, further improving the use experience of the user, and driving the impeller 20 to rotate through the driving unit, enabling the impeller 20 to have a sufficiently fast rotating speed to generate a sufficient centrifugal force, and adopting the impeller 20 with a rotary structure, ensuring that water vapor and bubbles can not be directly discharged through the exhaust hole 16 in all directions, simultaneously, revolution mechanic's impeller 20 rotates the effect steadily, each marginal position's centrifugal force difference is less, stable gas, the liquid separation effect has, on the other hand, because before gas emission, break the bubble through impeller 20, make gas can be smooth and easy discharge via gas vent 16, thereby exhaust noise has been reduced, simultaneously, set up gas vent 16 in impeller 20 is in the vertical projection scope of pot cover 14, can guarantee cooking intracavity steam and bubble effectively, earlier through impeller 20, again through discharging by gas vent 16, the anti-overflow effect of the quick exhaust subassembly 10 of pressure cooker has been guaranteed.
In the embodiment, the impeller 20 may be disposed at the center of the lid 14, or at the periphery of the lid 14.
When the pressure cooker 1 is used for cooking thick food such as porridge, the reason that the overflow phenomenon can occur when the pressure is reduced in a venting mode is that the porridge is cooked under the pressure condition, the temperature of the porridge can exceed 100 ℃, so that the food is in an overheated state, at the moment, the vent 16 is opened, tiny bubbles in the porridge can rapidly expand and grow to form an explosive boiling state, and in the explosive boiling state, the bubbles can carry liquid and food particles to flow towards the vent 16 and finally are outwards ejected at the vent 16, so that the overflow phenomenon is caused.
As shown in FIG. 4, the present invention provides a quick exhaust assembly 10 for a pressure cooker, which is based on the centrifugal force formula FSeparation deviceAccording to the principle that the centrifugal force is larger when the mass is larger under the condition of the same radius and angular velocity, the invention separates substances with different specific gravities according to a high-speed rotation mode, and under the condition of 1.5 times of atmospheric pressure (pressure limit value of the electric pressure cooker 1 for cooking porridge), the density of water vapor is 0.84kg/m < SP > 3, and the density of water is 1000kg/m < SP > 3, which are different by more than 1000 times, so that gas and liquid can be separated by the high-speed rotation mode.
In one embodiment of the present invention, preferably, as shown in fig. 1-9, the axis of rotation of impeller 20 is parallel to or coincident with the central axis of pan body 12.
In this embodiment, the rotation axis of the impeller 20 is set to be parallel to or coincident with the central axis of the pan body 12, so that the impeller 20 can rotate perpendicular to the exhaust direction of the exhaust port 16, and further the rotation direction of the impeller 20 can be perpendicular to the airflow flowing direction, thereby better realizing gas-liquid separation.
In another embodiment of the present invention, preferably, an included angle a is formed between the rotation axis of the impeller 20 and the central axis of the pot 12, and the value range of a is: a is more than 0 degree and less than or equal to 16 degrees.
In this embodiment, the rotation axis of the impeller 20 is inclined, so that the impeller 20 forms an inclination angle in the cooking cavity, that is, the impeller 20 forms an included angle a with the horizontal direction, and when the impeller 20 rotates at a high speed, the liquid generated after the bubbles of the impeller 20 are broken is easier to return directly to the liquid level of the cooking material in the cooking cavity under the action of centrifugal force.
In an embodiment of the present invention, preferably, a gap d1 is provided between the pot cover 14 and the top end surface of the impeller 20, and the value range of the gap d1 is: d1 is more than or equal to 0mm and less than or equal to 2 mm.
In this embodiment, the value range of the gap d1 between the inner surface of the lid 14 and the upper surface of the impeller 20 is set as follows: d1 is not less than 0mm and not more than 2mm, so that the steam and bubbles in the cooker body are prevented from being directly discharged from the exhaust port 16 through the gap between the inner surface of the cooker cover 14 and the upper surface of the impeller 20, and the anti-overflow effect of the quick exhaust component 10 of the pressure cooker is ensured.
In one embodiment of the present invention, preferably, as shown in fig. 4 to 9, the driving unit includes: a rotating shaft 22 provided on the pot cover 14; the impeller 20 is synchronously coupled to a rotating shaft 22.
In this embodiment, the impeller 20 is connected to the pot 14 through the rotating shaft 22, so that the impeller 20 can smoothly rotate, and the connection mode has a simple structure, requires less material, and has high assembly efficiency.
In the embodiment, the rotating shaft 22 and the lid 14 may be an integral structure or a split structure.
In another embodiment of the present invention, preferably, as shown in fig. 4 to 9, the driving unit further includes: a motor 24 arranged on the pot cover 14 and positioned outside the closed cooking cavity, the motor 24 being provided with an output shaft 242; the lid 14 is provided with a through hole, and the rotating shaft 22 is inserted into the through hole and connected to the output shaft 242.
In this embodiment, the motor 24 drives the impeller 20 to rotate, so that the rotation speed of the impeller 20 is ensured, the effect of separating gas and liquid by the impeller 20 can be effectively ensured, the motor 24 is arranged above the pot cover 14, the motor 14 is protected, and the motor 14 is prevented from being damaged due to contact with the liquid.
Further, the rotation power of the impeller 20 may also be provided by a pressure difference between the inside of the cooking chamber and the outside. That is, the driving unit of the present invention may be an air path or a channel provided in the pot cover and/or the cooking cavity, and the impeller 20 may be driven to rotate by the flow of the steam when the pressure difference exists between the inside and the outside, and in short, the driving unit of the present invention may be any unit that can rotate the impeller 20 to generate the centrifugal force.
In one embodiment of the present invention, preferably, as shown in fig. 4 to 9, the rotating shaft 22 and the output shaft 242 are of a unitary structure.
In this embodiment, the rotating shaft 22 and the output shaft 242 are of an integrated structure, and the mechanical properties of the integrated structure are good, so that the connection strength between the rotating shaft 22 and the output shaft 242 can be ensured, and in addition, the rotating shaft 22 and the output shaft 242 of the integrated structure can improve the processing efficiency of products and reduce the processing cost of the products.
In a specific embodiment, the rotating shaft 22 and the output shaft 242 may be provided in a split structure, and the rotating shaft 22 and the output shaft 242 may be directly connected by a universal joint.
In one embodiment of the present invention, a sealing member 26 is preferably provided between the through hole and the rotating shaft 22, as shown in fig. 4 to 9.
In this embodiment, the sealing member 26 is disposed between the through hole and the rotating shaft 22 to ensure the tightness of the cavity of the pressure cooker and ensure the normal use of the pressure cooker.
Wherein, preferably, a sealing ring is arranged between the through hole and the rotating shaft 22.
In one embodiment of the present invention, preferably, the inner side of the lid 14 is provided with a guiding hood 18 extending towards the inside of the cooking cavity, the guiding hood 18 is annular, the upper surface of the impeller 20, the inner wall of the guiding hood 18 and the inner surface of the lid 14 together define a cavity, and the exhaust port 16 is communicated from the cavity to the external environment.
In this embodiment, a cavity is formed by the upper surface of the impeller 20, the inner wall of the annular dome 18, and the inner surface of the lid 14, the impeller 20 rotates at the air inlet of the cavity, when the exhaust port 16 is opened for exhausting, the water vapor and bubbles generated by cooking can only enter the cavity through the impeller 20 and then are exhausted through the exhaust port 16, when the water vapor and the bubbles pass through the impeller 20, the high-speed rotation of the impeller 20 breaks the bubbles, the liquid generated after breaking the bubbles is attached to the impeller 20, and is thrown out towards the periphery under the action of larger centrifugal force generated by the rotation of the impeller 20 and then returns to the liquid level of the cooked food in the cooking cavity, and water vapor can enter the cavity from the gap between the blades of the impeller 20 and then is discharged from the exhaust port 16, meanwhile, the impeller 20 can be far away from the inner surface of the pot cover 14, and the impeller 20 can rotate smoothly.
In particular embodiments, other components may be used to prevent the flow of the gas-liquid mixture directly to the exhaust port 16 without passing through the impeller 20.
In one embodiment of the present invention, it is preferable that the perpendicular projection of the lower port of the pod 18 on the impeller 20 does not extend beyond the edge of the impeller 20, as shown in fig. 4 to 6 and 9.
In this embodiment, the vertical projection of the lower port of the air guide sleeve 18 on the impeller 20 is set not to exceed the edge of the impeller 20, so that the water vapor and bubbles in the pot body are prevented from directly entering the air guide sleeve 18 from the gap between the impeller 20 and the air guide sleeve 18 and being discharged from the air outlet 16, and the anti-overflow effect of the quick exhaust assembly 10 of the pressure cooker is ensured. In another embodiment of the present invention, preferably, as shown in fig. 7, the perpendicular projection of the lower port of the air guide sleeve 18 on the impeller 20 exceeds the edge of the impeller 20, the exceeding value is d2, and the value range of d2 is: d2 is more than 0mm and less than or equal to 2 mm.
In this embodiment, by setting the vertical projection of the lower port of the nacelle 18 on the impeller 20 to be beyond the edge of the impeller 20, the exceeding value d2 is in the range of: d2 is more than 0mm and less than or equal to 2mm, so that the steam and bubbles in the pot body are prevented from directly entering the air guide sleeve 18 from the gap between the impeller 20 and the air guide sleeve 18 and being discharged from the air outlet 16, and the anti-overflow effect of the quick exhaust assembly of the pressure cooker is ensured.
In one embodiment of the present invention, as shown in fig. 4, 5, 7 and 9, the longitudinal cross-sectional shape of the air guide sleeve 18 perpendicular to the direction of the lid 14 is preferably rectangular.
Wherein, preferably, the shape of the air guide sleeve 18 is set to be cylindrical, and the air guide sleeve 18 has simple structure, is easy to produce and manufacture, and improves the production efficiency.
In particular embodiments, the pod 18 may take any geometric shape.
In another embodiment of the present invention, it is preferable that the longitudinal cross-sectional shape of the pod 18 perpendicular to the direction of the lid 14 is trapezoidal, as shown in fig. 6.
Preferably, the shape of the air guide sleeve 18 is set to be a circular truncated cone shape, the air guide sleeve 18 is simple in structure and easy to produce and manufacture, and the production efficiency is improved; more importantly, as the air guide sleeve 18 is of a structure with a large upper part and a small lower part, the cavity defined by the air guide sleeve 18, the pot cover 14 and the impeller 20 is a cavity with gradually increased space from bottom to top, after the impeller 20 is used for carrying out vapor-liquid separation treatment on bubbles, the space of the steam is gradually increased in the rising process, so that the steam is easier to move upwards, and the generation of large noise caused by the high-speed rotation of the impeller 20 and the action of the steam is avoided.
In one embodiment of the present invention, preferably, as shown in fig. 4 to 9, the distance between the geometric center of the exhaust port 16 and the axis of rotation 22 of the impeller 20 is R1, the inner diameter of the exhaust port 16 is d1, the radius of the impeller 20 is R2, the radius of the upper port of the guide cover 18 is R1, and the radius of the lower port of the guide cover 18 is R2; wherein R1+ d1/2 is more than R1, and R2+4mm is more than or equal to R2.
In this embodiment, the distance between the geometric center of the exhaust port 16 and the axis of rotation 22 of the impeller 20 is R1, the inner diameter of the exhaust port 16 is d1, the radius of the impeller 20 is R2, the radius of the upper port of the air guide sleeve 18 is R1, and the radius of the lower port of the air guide sleeve is R2, so that the anti-overflow effect of the quick exhaust assembly 10 of the pressure cooker can be ensured when the relation of R1+ d1/2< R1, and R2+4mm is greater than or equal to R2 is satisfied.
In one embodiment of the present invention, preferably, as shown in fig. 1 to 9, the impeller 20 is provided with radial blades.
In this embodiment, the impeller 20 with radial blades can provide enough centrifugal force to separate the vapor and bubbles in the pot from the liquid.
In particular embodiments, the impeller 20 may be provided in other shapes that provide centrifugal force.
In a second embodiment according to the invention, as shown in fig. 9, the invention proposes a pressure cooker 1 comprising a quick venting assembly 10 of the pressure cooker as provided in any of the embodiments described above.
The pressure cooker 1 provided by the present invention includes the quick exhaust assembly 10 of the pressure cooker according to any of the embodiments described above, so that the pressure cooker has all the advantages of the quick exhaust assembly 10 of the pressure cooker, which are not described herein.
When the exhaust port 16 of the rapid exhaust assembly 10 and the pressure cooker 1 of the pressure cooker provided by the invention is opened, gas and liquid are mixed together and move towards the exhaust port 16, the mixture of the gas and the liquid must pass through the impeller 20 rotating at high speed in the process of moving towards the exhaust port 16 due to the blocking effect of the guide cover 18, the impeller 20 rotating at high speed generates centrifugal force on the mixture of the gas and the liquid, and the specific gravity of the liquid is far greater than that of the gas, so the centrifugal force on the liquid is far greater than that of the gas, the liquid is thrown out of the guide cover 18, and the gas is remained in the guide cover 18 and finally exhausted through the exhaust port 16.
Through practical tests, the pressure reduction time of the pressure cooker 1 adopting the quick exhaust component 10 of the pressure cooker can be shortened from 40min to 60min to 2 min.
As shown in fig. 5, in an embodiment of the present invention, it is preferable that the impeller 20 is installed at a central position of the pot cover 14, the air guide sleeve 18 is disposed above the impeller 20, the air guide sleeve 18 is cylindrical, an air inlet of a lower end surface of the air guide sleeve 18 does not exceed an edge of the impeller 20, the impeller 20 is driven by the motor 24 to rotate at a high speed, and an output shaft 242 of the motor 24 and the rotating shaft 22 are of an integrated structure.
In another embodiment of the present invention, as shown in fig. 6, preferably, the impeller 20 is installed at the center of the pot cover 14, the air guide sleeve 18 is disposed above the impeller 20, the air guide sleeve 18 is conical, the air inlet of the lower end surface of the air guide sleeve 18 does not exceed the edge of the impeller 20, the impeller 20 is driven by the motor 24 to rotate at a high speed, and the output shaft 242 of the motor 24 and the rotating shaft 22 are of an integral structure.
In another embodiment of the present invention, as shown in fig. 7, preferably, the impeller 20 is installed at the center of the pot cover 14, the air guide sleeve 18 is disposed above the impeller 20, the air guide sleeve 18 is cylindrical, the air inlet of the lower end surface of the air guide sleeve 18 exceeds the edge of the impeller 20 by no more than 2mm, the impeller 20 is driven by the motor 24 to rotate at a high speed, and the output shaft 242 of the motor 24 and the rotating shaft 22 are of an integral structure.
In another embodiment of the present invention, as shown in fig. 8, preferably, the impeller 20 is installed at the center of the pot cover 14, the exhaust port 16 is located within the vertical projection range of the impeller 20 on the pot cover, a gap of not more than 2mm is provided between the inner surface 14 of the pot cover and the upper surface of the impeller 20, the impeller 20 is driven by the motor 24 to rotate at a high speed, and the output shaft 242 of the motor 24 and the rotating shaft 22 are of an integral structure.
In another embodiment of the present invention, preferably, the impeller 20 is installed at the center of the lid 14, a gap of not more than 2mm is provided between the lid 14 and the top end surface of the impeller 20, the impeller 20 is driven by the pressure difference between the inside of the pressure cooker 1 and the outside to rotate at a high speed, and the rotating shaft 22 and the lid 14 are of an integral structure.
In summary, in the rapid exhaust assembly 10 of the pressure cooker of the present invention, the impeller 20 pivotally engaged with the lid 14 is disposed in the cooking cavity, when the cooking is finished, the high-pressure steam and the bubbles inside the cooker body 12 will first pass through the impeller 20 and then be exhausted through the exhaust port 16, and when the steam and the bubbles pass through the impeller 20, the high-pressure air flow will drive the impeller 20 to rotate, and the impeller 20 rotates to generate a centrifugal force, and the formula of the centrifugal force is: fSeparation deviceM omega 2r, wherein, m is the quality, omega is angular speed, r is the radius, under the condition that angular speed is unanimous with the radius, because the quality of the liquid of equal volume is far greater than gas, consequently, the centrifugal force that liquid received will be far greater than gas, make liquid can't pass through impeller 20, but separate by impeller 20, and gas can be discharged by the exhaust hole through impeller 20, thereby gas, liquid separation has been realized, and then realized that anti-overflow and quick decompression of pressure cooker 1, make the user needn't wait for pressure cooker 1 cooling decompression for a long time, realized opening fast of pressure cooker 1, and then promoted user's use and experienced, and, drive impeller 20 through drive unit and rotate, make impeller 20 possess enough fast rotational speed and produce sufficient fast rotational speed and experienceThe centrifugal force of volume to adopt revolution mechanic's impeller 20, guaranteed that vapor and bubble all can't directly be got rid of by gas vent 16 in all directions, simultaneously, revolution mechanic's impeller 20 rotates the effect steadily, and the centrifugal force difference of each border position is less, has stable gas, liquid separation effect, on the other hand, owing to before gas emission, breaks the bubble through impeller 20 for gas can be smooth and easy discharges via gas vent 16, thereby reduced exhaust noise.
It should be noted that, in the above technical solution of the present invention, the motor 24 is used to drive the impeller 20 to rotate, in other realizable solutions of the present invention, other mechanisms capable of driving the impeller 20 to rotate may also be used, for example, a rotary cylinder or a wind power driving mechanism, and a person skilled in the art may select a mechanism for driving the impeller 20 to rotate in the prior art according to the function implemented by the driving unit, which is not described herein in detail.
In the present invention, the terms "mounting," "connecting," "fixing," and the like are used in a broad sense, for example, "connecting" may be a fixed connection, a detachable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A quick venting assembly for a pressure cooker, comprising: the cooker cover is buckled on the cooker body and forms a closed cooking cavity with the cooker body, and an exhaust port for communicating the cooking cavity with the external environment is formed in the cooker cover; characterized in that, the quick exhaust component of the pressure cooker further comprises: the impeller is positioned in the cooking cavity and is in pivot fit with the pot cover; and the number of the first and second groups,
the driving unit is used for driving the impeller to rotate;
wherein the impeller is of a rotary structure;
a flow guide cover extending towards the interior of the cooking cavity is arranged on the inner side of the pot cover, and the flow guide cover is arranged above the impeller;
the vertical projection of the lower port of the air guide sleeve on the impeller does not exceed the edge of the impeller; or
The vertical projection of the lower port of the air guide sleeve on the impeller exceeds the edge of the impeller, the exceeding value is d2, and the value range of d2 is as follows: d2 is more than 0mm and less than or equal to 2 mm.
2. Quick venting assembly for a pressure cooker according to claim 1,
the rotation axis of the impeller is parallel to or coincident with the central axis of the pot body.
3. The rapid exhaust assembly of a pressure cooker as claimed in claim 1, wherein an included angle a is formed between the rotation axis of the impeller and the central axis of the cooker body, and the value range of a is: a is more than 0 degree and less than or equal to 16 degrees.
4. Rapid venting assembly for a pressure cooker according to claim 2 or 3,
a gap d1 is formed between the pot cover and the end face of the top of the impeller, and the value range of the gap d1 is as follows: d1 is more than or equal to 0mm and less than or equal to 2 mm.
5. The quick venting assembly of a pressure cooker as claimed in claim 1, wherein said driving unit comprises:
the rotating shaft is arranged on the pot cover;
the impeller is synchronously coupled to the rotating shaft.
6. The quick venting assembly of a pressure cooker as claimed in claim 5, wherein said drive unit further comprises:
the motor is arranged on the pot cover and positioned outside the closed cooking cavity, and is provided with an output shaft;
the pot cover is provided with a through hole, and the rotating shaft penetrates through the through hole and is connected with the output shaft.
7. Quick venting assembly for a pressure cooker according to claim 6,
and a sealing element is arranged between the through hole and the rotating shaft.
8. The quick venting assembly for a pressure cooker as in claim 1,
the kuppe is the annular, the upper surface of impeller, the inner wall of kuppe and the internal surface of pot cover encloses into a cavity jointly, the gas vent by the cavity switches on to external environment.
9. Quick venting assembly for a pressure cooker according to claim 8,
the longitudinal section of the air guide sleeve perpendicular to the direction of the pot cover is rectangular or trapezoidal.
10. Quick venting assembly for a pressure cooker according to claim 8,
the distance between the geometric center of the exhaust port and the rotation axis of the impeller is R1, the inner diameter of the exhaust port is d3, the radius of the impeller is R2, the radius of the upper port of the flow guide cover is R1, and the radius of the lower port of the flow guide cover is R2;
wherein R1+ d3/2 is more than R1, and R2+4mm is more than or equal to R2.
11. Quick venting assembly for a pressure cooker according to claim 1,
the impeller is provided with radial blades.
12. A pressure cooker, comprising:
quick venting assembly for a pressure cooker according to any one of the preceding claims 1 to 11.
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| CN201710038079.0A CN108324096B (en) | 2017-01-19 | 2017-01-19 | Quick exhaust assembly of pressure cooker and pressure cooker |
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| CN201710038079.0A CN108324096B (en) | 2017-01-19 | 2017-01-19 | Quick exhaust assembly of pressure cooker and pressure cooker |
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| CN108324096B true CN108324096B (en) | 2021-02-23 |
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| WO2019032876A1 (en) | 2017-08-09 | 2019-02-14 | Sharkninja Operating Llc | Cooking device and components thereof |
| USD914436S1 (en) | 2018-06-19 | 2021-03-30 | Sharkninja Operating Llc | Air diffuser with food preparation pot |
| USD883014S1 (en) | 2018-08-09 | 2020-05-05 | Sharkninja Operating Llc | Food preparation device |
| USD883015S1 (en) | 2018-08-09 | 2020-05-05 | Sharkninja Operating Llc | Food preparation device and parts thereof |
| USD903413S1 (en) | 2018-08-09 | 2020-12-01 | Sharkninja Operating Llc | Cooking basket |
| USD934027S1 (en) | 2018-08-09 | 2021-10-26 | Sharkninja Operating Llc | Reversible cooking rack |
| CN110200484A (en) * | 2018-08-23 | 2019-09-06 | 华帝股份有限公司 | Pressure relief structure and electric steam box using same |
| CN110856609A (en) * | 2018-08-24 | 2020-03-03 | 浙江绍兴苏泊尔生活电器有限公司 | Cooking utensil |
| US11033146B2 (en) | 2019-02-25 | 2021-06-15 | Sharkninja Operating Llc | Cooking device and components thereof |
| US11751710B2 (en) | 2019-02-25 | 2023-09-12 | Sharkninja Operating Llc | Guard for cooking system |
| USD982375S1 (en) | 2019-06-06 | 2023-04-04 | Sharkninja Operating Llc | Food preparation device |
| USD918654S1 (en) | 2019-06-06 | 2021-05-11 | Sharkninja Operating Llc | Grill plate |
| US11647861B2 (en) | 2020-03-30 | 2023-05-16 | Sharkninja Operating Llc | Cooking device and components thereof |
| CN112426030B (en) * | 2020-12-06 | 2022-04-12 | 天津市中核科技实业有限公司 | Diversion type gas pressure limiting valve with liquid separation and anti-blocking functions |
| CN114847754B (en) * | 2021-02-04 | 2023-07-18 | 佛山市顺德区美的电热电器制造有限公司 | Control method of cooking device, and readable storage medium |
| CN113180483A (en) * | 2021-06-18 | 2021-07-30 | 佛山市南海无国界限科技有限公司 | Emulsified soup discharging device |
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