Disclosure of Invention
The invention mainly aims to provide a pressure cooking appliance so as to solve the problem of high production cost of a pressure limiting valve of the pressure cooking appliance capable of adjusting pressure in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided a pressure cooking appliance including a pot body having a cooking cavity, a pot cover provided on the pot body, the pot cover being provided with an exhaust passage, a pressure limiting valve cooperating with the exhaust passage, the pressure limiting valve including a first magnetic structure, a pressure regulating mechanism capable of translating or rotating with respect to the pot cover, the pressure regulating mechanism including a second magnetic structure, a repulsive force being generated between the first magnetic structure and the second magnetic structure if the first magnetic structure is opposite to the second magnetic structure, so that the pressure limiting valve cooperates with the exhaust passage under the action of its own gravity and the repulsive force, and a heating device for heating food in the cooking cavity.
Further, the second magnetic structures are multiple, and the repulsive force generated when each second magnetic structure is opposite to the first magnetic structure is different, so that the working pressure of the pressure limiting valve is different.
Further, the pressure regulating mechanism further comprises a third magnetic structure, and if the first magnetic structure is opposite to the third magnetic structure, magnetic attraction force is generated between the first magnetic structure and the third magnetic structure, and the pressure limiting valve can be far away from the exhaust channel under the action of the magnetic attraction force.
Further, the first magnetic structure is a first magnetic block, the second magnetic structure is a second magnetic block, and the third magnetic structure is a third magnetic block.
Further, the pressure regulating mechanism further comprises a bracket which is pivotably arranged on the pot cover, and the second magnetic block and the third magnetic block are arranged on the bracket.
Further, if the pressure regulating mechanism is remote from the pressure limiting valve, the pressure limiting valve can cooperate with the exhaust passage under the action of its own weight.
Further, the pressure cooking utensil also comprises a driving mechanism for driving the pressure regulating mechanism to translate or rotate relative to the pot cover.
Further, a transmission member is arranged between the driving mechanism and the pressure regulating mechanism so as to transmit the driving force of the driving mechanism to the pressure regulating mechanism.
Further, the driving mechanism is a motor, the transmission part is a gear, the gear is matched with an output shaft of the motor, and the pressure regulating mechanism is provided with matched teeth matched with the gear.
Further, the cooking utensil is an electric pressure cooker, and the cooker cover comprises a surface cover, an inner liner and an inner cover which are sequentially arranged from outside to inside, and the pressure regulating mechanism is pivotably arranged on the inner liner.
By applying the technical scheme of the invention, when the first magnetic structure is opposite to the second magnetic structure, repulsive force is generated between the first magnetic structure and the second magnetic structure, and the pressure limiting valve can be blocked at the exhaust channel under the action of self gravity and repulsive force. When the gas pressure in the cooking cavity is enough to overcome the sum of the gravity and the repulsive force of the pressure limiting valve, the pressure limiting valve can be jacked up to realize the exhaust, so that the pressure cooking appliance works at the first working pressure. When the pressure limiting valve is not subjected to external force, the pressure limiting valve can be blocked at the exhaust channel under the action of gravity of the pressure limiting valve. When the gas pressure in the cooking cavity is enough to overcome the gravity of the pressure limiting valve, the pressure limiting valve can be jacked up to realize the exhaust, so that the pressure cooking appliance works at the second working pressure. The structure controls the pressure in the cooking cavity by applying repulsive force to the pressure limiting valve, so that the pressure limiting valve does not need to be increased in a balancing weight structure, the structure of the pressure limiting valve is simplified, and the processing difficulty and the production cost of the pressure limiting valve are reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
Fig. 1 shows a schematic longitudinal sectional structure of an embodiment of a pressure cooking appliance according to the present invention;
fig. 2 shows an enlarged schematic structural view of a of the pressure cooking appliance of fig. 1;
Fig. 3 illustrates an exploded structural schematic view of the pressure cooking appliance of fig. 1;
Fig. 4 shows an enlarged structural schematic diagram at B of the pressure cooking appliance of fig. 3;
FIG. 5 illustrates a schematic perspective view of the liner of the pressure cooking appliance of FIG. 1 with the bracket in a first position;
FIG. 6 illustrates a schematic perspective view of the liner of the pressure cooking appliance of FIG. 1 with the bracket in a second position;
fig. 7 is a schematic perspective view showing a liner of the pressure cooking appliance of fig. 1 in a third position, and
Fig. 8 shows a schematic perspective view of the liner of the pressure cooking appliance of fig. 1 with the stand in a fourth position.
Wherein the above figures include the following reference numerals:
1. The cooking cavity, 2, an exhaust channel, 10, a pot body, 20, a pot cover, 21, an inner liner, 22, an inner cover, 30, a pressure limiting valve, 31, a first magnetic structure, 40, a pressure regulating mechanism, 41, a second magnetic structure, 42, a third magnetic structure, 43, a bracket, 431, a matched tooth, 50, a driving mechanism, 60 and a transmission piece.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1 to 4, 7 and 8, in the present embodiment, the pressure cooking appliance includes a pot body 10, a pot cover 20, a pressure limiting valve 30, a pressure regulating mechanism 40 and a heating device. Wherein the pot body 10 is provided with a cooking cavity 1. The pot cover 20 is covered on the pot body 10, and the pot cover 20 is provided with an exhaust passage 2. The pressure limiting valve 30 cooperates with the exhaust channel 2, the pressure limiting valve 30 comprising a first magnetic structure 31. The pressure regulating mechanism 40 can translate or rotate relative to the pot cover 20, the pressure regulating mechanism 40 comprises a second magnetic structure 41, and if the first magnetic structure 31 is opposite to the second magnetic structure 41, a repulsive force is generated between the first magnetic structure 31 and the second magnetic structure 41, so that the pressure limiting valve 30 can be matched with the exhaust channel 2 under the action of self gravity and repulsive force. A heating device for heating the food in the cooking cavity 1.
By applying the technical scheme of the embodiment, when the first magnetic structure 31 is opposite to the second magnetic structure 41, a repulsive force is generated between the first magnetic structure 31 and the second magnetic structure 41, and the pressure limiting valve 30 can be plugged at the exhaust channel under the action of its own gravity and the repulsive force. When the gas pressure in the cooking cavity 1 is enough to overcome the sum of the gravity and the repulsive force of the pressure limiting valve 30, the pressure limiting valve 30 can be jacked up to realize the exhaust, so that the pressure cooking appliance works at the first working pressure. And when the pressure limiting valve 30 is not subjected to external force, the pressure limiting valve 30 can be blocked at the exhaust passage under the action of its own weight. When the pressure of the gas in the cooking cavity 1 is enough to overcome the gravity of the pressure limiting valve 30, the pressure limiting valve 30 can be jacked up to realize the exhaust, so that the pressure cooking appliance works at the second working pressure. The structure controls the pressure in the cooking cavity 1 by applying repulsive force to the pressure limiting valve 30, so that the pressure limiting valve 30 does not need to be added with a balancing weight structure, the structure of the pressure limiting valve is simplified, and the processing difficulty and the production cost of the pressure limiting valve are reduced.
As shown in fig. 3 to 8, in the present embodiment, the second magnetic structures 41 are plural, and the repulsive force generated when each second magnetic structure 41 is opposite to the first magnetic structure 31 is different, so that the operation pressure of the pressure limiting valve 30 is different. For example, in the present embodiment, the second magnetic structures 41 are two, the repulsive force generated when one of the two second magnetic structures 41 is opposed to the first magnetic structure 31 is a first repulsive force, and the repulsive force generated when the other of the two second magnetic structures 41 is opposed to the first magnetic structure 31 is a second repulsive force, and the first repulsive force is larger than the second repulsive force. Therefore, the second different magnetic structure 41 is opposite to the pressure limiting valve 30, so that the downward resultant force (resultant force of gravity and repulsive force of the pressure limiting valve) applied to the pressure limiting valve 30 is different, and finally, the function of multi-stage pressure regulation is realized. The pressure cooker has the advantages that the structure is simple, and the cooking effect of the pressure cooker is better when the pressure cooker can be provided with multiple sections of pressure regulation according to actual needs. Of course, in other embodiments, the second magnetic structure 41 may be 3 or more.
As shown in fig. 3, 4 and 6, in the present embodiment, the pressure regulating mechanism 40 further includes a third magnetic structure 42, and if the first magnetic structure 31 is opposite to the third magnetic structure 42, a magnetic attraction force is generated between the first magnetic structure 31 and the third magnetic structure 42, and the pressure limiting valve 30 can be far away from the exhaust passage 2 under the action of the magnetic attraction force, so as to achieve pressureless cooking. The structure is simple, different cooking modes can be realized, and the cooking effect of the pressure cooking appliance is improved.
As shown in fig. 1 to 8, in the present embodiment, the first magnetic structure 31 is a first magnetic block, the second magnetic structure 41 is a second magnetic block, and the third magnetic structure 42 is a third magnetic block. The structure is simple and the cost is low.
As shown in fig. 1 to 8, in the present embodiment, the pressure regulating mechanism 40 further includes a bracket 43 pivotably provided on the lid 20, and the second and third magnetic blocks are provided on the bracket 43. Specifically, in this embodiment, the second magnetic block is two (hereinafter, the second magnetic block a and the second magnetic block b are distinguished, the second repulsive force can be generated when the second magnetic block a is opposite to the first magnetic block, the first repulsive force can be generated when the second magnetic block b is opposite to the first magnetic block), and the second magnetic block a is located between the second magnetic block b and the third magnetic block.
As shown in fig. 5, when the bracket 43 rotates to a position where the second magnetic block a, the second magnetic block b and the third magnetic block are away from the first magnetic block on the pressure limiting valve 30 (the first position of the bracket), the first magnetic block does not interact with the second magnetic block a, the second magnetic block b and the third magnetic block on the bracket 43, so that the pressure in the cooking cavity 1 is close to the self-weight seal exhaust channel of the pressure limiting valve 30. For example, the pressure limiting valve 30 can only bear the pressure of 30KPA by weight, when the pressure in the cooking cavity 1 is smaller than 30KPA, the pressure limiting valve 30 seals the exhaust passage, and no air leakage occurs at the sealing position of the pressure limiting valve 30 and the exhaust passage. When the pressure in the cooking cavity 1 is greater than 30KPA, the pressure limiting valve 30 is pushed upwards, so that the pressure limiting valve 30 is separated from the exhaust passage and cannot be sealed, and at the moment, the low-pressure cooking can be realized, chlorine, peculiar smell and the like in the pot are effectively discharged, and the cooked food has good taste.
As shown in fig. 6, when the bracket 43 rotates to the position where the third magnet is opposite to the first magnet (the second position of the bracket), the third magnet attracts the first magnet, and the pressure limiting valve 30 is attracted away from the exhaust passage, so that pressureless cooking is realized.
As shown in fig. 7, when the bracket 43 is rotated to the state that the second magnetic block a is opposite to the first magnetic block (the third position of the bracket), a weaker second repulsive force is formed between the second magnetic block a and the first magnetic block. The second repulsive force adds to the force that the self weight of the pressure limiting valve 30 can bear, so as to realize medium pressure cooking (for example, weaker repulsive force adds to the self weight of the pressure limiting valve 30 so that the pressure limiting valve 30 can bear 70 KPA). When the pressure in the cooking cavity 1 is less than 70KPA, the pressure limiting valve 30 is sealed with the exhaust passage, and no air leakage occurs at the sealing position of the pressure limiting valve 30 and the exhaust passage. When the pressure in the cooking cavity 1 is greater than 70KPA, the pressure limiting valve 30 is pushed upwards, so that the sealing part of the pressure limiting valve 30 and the exhaust passage is separated from each other and cannot be sealed, and the pressure cooker can continuously exhaust air at the moment, realize medium-pressure cooking and effectively exhaust chlorine, peculiar smell and the like in the cooker.
As shown in fig. 8, when the bracket 43 rotates to the position where the second magnet b is opposite to the first magnet (the fourth position of the bracket), a strong first repulsive force is formed between the second magnet b and the first magnet. The first repulsive force and the self weight of the pressure limiting valve 30 can bear the force to realize high-pressure cooking (for example, the strong repulsive force and the self weight of the pressure limiting valve 30 can lead the pressure limiting valve 30 to bear the pressure of 100 KPA). When the pressure in the cooking cavity 1 is less than 100KPA, the pressure limiting valve 30 seals the exhaust passage, and no air leakage occurs at the sealing part of the pressure limiting valve 30 and the exhaust passage. When the pressure in the cooking cavity 1 is greater than 100KPA, the pressure limiting valve 30 is pushed upwards, so that the sealing part of the pressure limiting valve 30 and the exhaust passage is separated from each other and cannot be sealed, and the pressure can be continuously exhausted at the moment, thereby realizing high-pressure cooking and effectively exhausting chlorine, peculiar smell and the like in the pot.
It should be noted that the pressure limiting valve 30 can bear 30KPA by its own weight and realize 70KPA and 100pa under the repulsive force of the magnet, and is merely illustrative, and is not limited to these parameters, and different parameter values may be set according to the needs.
As shown in fig. 3 and 4, the pressure cooking appliance further includes a driving mechanism 50, and the driving mechanism 50 drives the pressure regulating mechanism 40 to translate or rotate with respect to the pot cover 20. Preferably, in the present embodiment, the driving mechanism 50 is a driving motor, and the driving motor can drive the pressure regulating mechanism 40 to rotate relative to the pot cover 20. The structure is simple and easy to realize.
In this embodiment, the pressure cooking appliance further includes a control board capable of controlling the driving mechanism 50 to act to achieve pressureless, low pressure, medium pressure, high pressure cooking. In this embodiment, the control board can control the driving motor to rotate forward or backward during one cooking process to perform combined cooking (for example, high-pressure, low-pressure combination, high-pressure, medium-pressure, no-pressure combination, high-pressure, medium-pressure, low-pressure, no-pressure combination, etc.). That is, in the above cooking process, one or more groups of combination cooking may be selected, and the cooking is not limited to the operation of one pressure at a time. Therefore, the structure enables the cooking effect to be more improved, and the user experience is improved.
As shown in fig. 3 to 8, in the present embodiment, a transmission member 60 is provided between the driving mechanism 50 and the pressure regulating mechanism 40 to transmit the driving force of the driving mechanism 50 to the pressure regulating mechanism 40. The structure has the advantages that for the pressure cooking appliances with the same distance between the driving mechanism 50 and the pressure limiting valve 30, the structure enables the transmission piece 60 and the bracket 43 to be smaller in length, so that deformation of produced products is avoided, interference between the transmission piece and the pressure limiting valve 30 during rotation is avoided, and the space occupied by the transmission piece 60 and the bracket 43 is smaller, and the swinging range of the bracket 43 can be larger. The further the distance between the bracket 43 and the pressure limiting valve 30 can be due to the increase of the swing range, the smaller the influence of the magnetic structure on the pressure limiting valve 30 can be, ensuring that the pressure cooking appliance can cook at a predetermined low pressure.
As shown in fig. 3 to 8, in the present embodiment, the driving mechanism 50 is a motor, the transmission member 60 is a gear, the gear is engaged with an output shaft of the motor, and the pressure regulating mechanism 40 is provided with engaging teeth 431 engaged with the gear. The pressure regulating device is simple in structure and high in precision, and pressure regulating is easier to control.
As shown in fig. 1 to 4, in the present embodiment, the cooking appliance is an electric pressure cooker, the cover 20 includes a cover, an inner liner 21 and an inner cover 22 sequentially disposed from outside to inside, and the pressure regulating mechanism 40 is pivotably disposed on the inner liner 21. An exhaust pipe is provided in the inner cover 22, and a passage in the exhaust pipe forms the exhaust passage 2.
In this embodiment, the cooking appliance further includes a safety valve, and the pressure limiting valve only plays a role of pressure limiting and does not play a role of the safety valve, so the pressure limiting valve can be made lighter to achieve the purpose of continuous exhaust.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.