CN110754933A

CN110754933A - Pressure cooking appliance

Info

Publication number: CN110754933A
Application number: CN201810828442.3A
Authority: CN
Inventors: 王本新
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Current assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Priority date: 2018-07-25
Filing date: 2018-07-25
Publication date: 2020-02-07

Abstract

The present invention provides a pressure cooking appliance including: a pot body having a cooking cavity; the pot cover is covered on the pot body and is provided with an exhaust channel; the pressure limiting valve is matched with the exhaust channel and comprises a first magnetic structure; the pressure regulating mechanism can move horizontally or rotate relative to the cooker cover and comprises a second magnetic structure, and if the first magnetic structure is opposite to the second magnetic structure, repulsion force is generated between the first magnetic structure and the second magnetic structure, so that the pressure limiting valve can be matched with the exhaust channel under the action of self gravity and the repulsion force. And the heating device is used for heating the food in the cooking cavity. By applying the technical scheme of the invention, the problem of high production cost of the pressure limiting valve of the pressure cooking appliance capable of adjusting the pressure in the prior art can be effectively solved.

Description

Pressure cooking appliance

Technical Field

The invention relates to the field of small household appliances, in particular to a pressure cooking appliance.

Background

The electric pressure cooker is a common household appliance. Wherein, in order to realize the function of multi-section pressure regulation, the balancing weight with adjustable position is arranged at the pressure limiting valve of some electric pressure cooker products. All adopt mechanical structure to the position control of balancing weight among the prior art to drive, for example utilize structures such as solenoid valve, lever, electric push rod to drive. The pressure of the electric pressure cooker is controlled by the scheme of the balancing weight, so that the pressure limiting valve is complex in structure and high in production cost.

Disclosure of Invention

The invention mainly aims to provide a pressure cooking appliance, which aims to solve the problem that a pressure limiting valve of the pressure cooking appliance capable of adjusting pressure in the prior art is high in production cost.

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; the pot cover is covered on the pot body and is provided with an exhaust channel; the pressure limiting valve is matched with the exhaust channel and comprises a first magnetic structure; the pressure regulating mechanism can translate or rotate relative to the cooker cover and comprises a second magnetic structure, and if the first magnetic structure is opposite to the second magnetic structure, repulsion force is generated between the first magnetic structure and the second magnetic structure, so that the pressure limiting valve can be matched with the exhaust channel under the action of self gravity and the repulsion force; and the heating device is used for heating the food in the cooking cavity.

Furthermore, the number of the second magnetic structures is multiple, and the magnitude of 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, pressure regulating mechanism still includes the third magnetic structure, if first magnetic structure is relative with the third magnetic structure, produces magnetic attraction between first magnetic structure and the third magnetic structure, and the exhaust passage can be kept away from to the pressure limiting valve under the effect of magnetic attraction.

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.

Furthermore, the pressure regulating mechanism also comprises a bracket which can be pivotally arranged on the cooker cover, and the second magnetic block and the third magnetic block are arranged on the bracket.

Further, if the pressure regulating mechanism is far away from the pressure limiting valve, the pressure limiting valve can be matched with the exhaust channel under the action of the self gravity of the pressure regulating mechanism.

Further, the pressure cooking appliance further includes: and the driving mechanism drives the pressure regulating mechanism to translate or rotate relative to the pot cover.

Further, a transmission part 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.

Furthermore, 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 matching teeth matched with the gear.

Further, the cooking utensil is an electric pressure cooker, the cooker cover comprises a surface cover, an inner liner and an inner cover which are arranged in sequence from outside to inside, and the pressure regulating mechanism is pivotally 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, repulsion force is generated between the first magnetic structure and the second magnetic structure, and the pressure limiting valve can be plugged at the exhaust passage under the action of the self gravity and the repulsion 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 air 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 the 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 air exhaust, so that the pressure cooking appliance works at the second working pressure. The pressure limiting valve is characterized in that the pressure limiting valve is provided with a pressure limiting valve body, the pressure limiting valve body is provided with a pressure limiting valve body, and the pressure limiting valve body is provided with a pressure limiting valve body.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic longitudinal sectional view of an embodiment of a pressure cooking appliance according to the invention;

fig. 2 shows an enlarged schematic view of the pressure cooking appliance of fig. 1 at a;

fig. 3 shows an exploded view of the pressure cooking appliance of fig. 1;

fig. 4 shows an enlarged schematic structural view at B of the pressure cooking appliance of fig. 3;

FIG. 5 shows a schematic perspective view of the liner of the pressure cooking appliance of FIG. 1 with the stand in a first position;

FIG. 6 shows a schematic perspective view of the liner of the pressure cooking appliance of FIG. 1 with the stand in a second position;

FIG. 7 shows a schematic perspective view of the liner of the pressure cooking appliance of FIG. 1 with the stand in a third position; and

fig. 8 shows a perspective view of the liner of the pressure cooking appliance of fig. 1 with the stand in a fourth position.

Wherein the figures include the following reference numerals:

1. a cooking cavity; 2. an exhaust passage; 10. a pan body; 20. a pot cover; 21. a 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 support; 431. matching teeth; 50. a drive mechanism; 60. a transmission member.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 4, 7 and 8, in the present embodiment, the pressure cooking appliance includes: the cooker body 10, the cooker cover 20, the pressure limiting valve 30, the pressure regulating mechanism 40 and the heating device. Wherein the pot 10 has a cooking cavity 1. The pot cover 20 is covered on the pot body 10, and the pot cover 20 is provided with the exhaust passage 2. A pressure-limiting valve 30 is fitted 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 lid 20, the pressure regulating mechanism 40 includes a second magnetic structure 41, 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 its own gravity and the repulsive force. A heating device for heating the food in the cooking chamber 1.

By applying the technical solution of the present 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 blocked at the exhaust passage 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. 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 gas pressure in the cooking chamber 1 is sufficient to overcome the weight of the pressure limiting valve 30, the pressure limiting valve 30 can be lifted to exhaust the gas, so that the pressure cooking appliance operates 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 counterweight structure, the structure of the pressure limiting valve is simplified, and the processing difficulty and the production cost of the pressure limiting valve are further reduced.

As shown in fig. 3 to 8, in the present embodiment, the number of the second magnetic structures 41 is multiple, and the magnitude of the repulsive force generated when each second magnetic structure 41 opposes the first magnetic structure 31 is different, so that the working pressures of the pressure limiting valve 30 are different. For example, in the present embodiment, the number of the second magnetic structures 41 is two, the repulsive force generated when one of the second magnetic structures 41 is opposite to the first magnetic structure 31 is a first repulsive force, and the repulsive force generated when the other second magnetic structure 41 is opposite to the first magnetic structure 31 is a second repulsive force, and the first repulsive force is greater than the second repulsive force. Therefore, the different second magnetic structures 41 are opposite to the pressure limiting valve 30, so that the downward resultant force (the resultant force of the gravity and the repulsive force of the pressure limiting valve) applied to the pressure limiting valve 30 is different, and finally, the multi-stage pressure regulating function is realized. Above-mentioned simple structure can set up the pressure cooking utensil's when multistage pressure regulating according to actual need culinary art effect is better. Of course, in other embodiments, the number of the second magnetic structures 41 may also be 3 or more than 3.

As shown in fig. 3, 4 and 6, in the present embodiment, the pressure regulating mechanism 40 further includes a third magnetic structure 42, 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 channel 2 under the action of the magnetic attraction force, so as to implement non-pressure cooking. Above-mentioned simple structure can realize different culinary art modes, improves pressure cooking utensil's culinary art effect.

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 disposed on the lid 20, and the second and third magnetic blocks are disposed on the bracket 43. Specifically, in this embodiment, the number of the second magnetic blocks is two (hereinafter, the second magnetic block a and the second magnetic block b are distinguished, when the second magnetic block a is opposite to the first magnetic block, the second magnetic block a can generate the second repulsive force, when the second magnetic block b is opposite to the first magnetic block, the first repulsive force can be generated), 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 all far away from the first magnetic block on the pressure limiting valve 30 (the first position of the bracket), the first magnetic block has no interaction 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 sealing exhaust passage of the pressure limiting valve 30. For example, the pressure limiting valve 30 can only bear the pressure of 30KPA by self weight, when the pressure in the cooking cavity 1 is less than 30KPA, the pressure limiting valve 30 and the exhaust channel are sealed, and no air leakage occurs at the sealing position of the pressure limiting valve 30 and the exhaust channel. When the pressure in the cooking cavity 1 is higher than 30KPA, the pressure limiting valve 30 is pushed upwards to separate the pressure limiting valve 30 from the exhaust channel and can not be sealed, at the moment, the exhaust can be continuously performed, the low-pressure cooking is realized, the chlorine, the 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 a position where the third magnetic block is opposite to the first magnetic block (the second position of the bracket), the third magnetic block is attracted to the first magnetic block, and the pressure limiting valve 30 is attracted upward and away from the exhaust passage, thereby realizing non-pressure cooking.

As shown in fig. 7, when the bracket 43 rotates to a position where 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 and the force which can be borne by the self weight of the pressure limiting valve 30 realize medium pressure cooking (for example, the pressure limiting valve 30 can bear the pressure of 70KPA due to the weak repulsive force and the self weight of the pressure limiting valve 30). When the pressure in the cooking cavity 1 is less than 70KPA, the pressure limiting valve 30 is sealed with the exhaust channel, and no air leakage occurs at the sealing position of the pressure limiting valve 30 and the exhaust channel. When the pressure in the cooking cavity 1 is higher than 70KPA, the pressure limiting valve 30 will be pushed upwards to separate the pressure limiting valve 30 from the sealing part of the exhaust channel, and the exhaust will not be sealed, so that the exhaust can be continued to realize medium pressure cooking and effectively discharge chlorine, peculiar smell and the like in the pot.

As shown in fig. 8, when the bracket 43 rotates to a position where the second magnetic block b is opposite to the first magnetic block (the fourth position of the bracket), a strong first repulsive force is formed between the second magnetic block b and the first magnetic block. The first repulsive force and the force that the pressure limiting valve 30 can bear by the self weight of the pressure limiting valve 30 realize high-pressure cooking (for example, the pressure limiting valve 30 can bear the pressure of 100KPA due to the strong repulsive force and the self weight of the pressure limiting valve 30). When the pressure in the cooking cavity 1 is less than 100KPA, the pressure limiting valve 30 seals the exhaust channel, and no air leakage occurs at the sealing part of the pressure limiting valve 30 and the exhaust channel. When the pressure in the cooking cavity 1 is higher than 100KPA, the pressure limiting valve 30 will be pushed upwards to separate the pressure limiting valve 30 from the sealing part of the exhaust channel, and the exhaust will not be sealed, so that the high pressure cooking can be realized, and the chlorine, the peculiar smell and the like in the pot can be effectively discharged.

It should be noted that the above-mentioned pressure limiting valve 30 can bear 30KPA by its own weight and realize 70KPA and 100PA by the action of the repulsive force of the magnet, which is only an example and not limited to these parameters, and different parameter values can 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 relative to the lid 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 lid 20. The structure is simple and easy to realize.

In this embodiment, the pressure cooking appliance further comprises a control board capable of controlling the driving mechanism 50 to operate to achieve pressureless, low pressure, medium pressure, high pressure cooking. It should be noted that, in this embodiment, during a single cooking process, the control board can control the driving motor to rotate forward or backward for performing combined cooking (e.g., high-voltage and low-voltage combination, high-voltage and medium-voltage combination, high-voltage, medium-voltage and no-voltage combination, high-voltage, medium-voltage, low-voltage and no-voltage combination, etc.). That is, in the above cooking process, one or more groups of cooking can be selected optionally, and the operation is not limited to one pressure operation in one cooking. Therefore, the structure enables the cooking effect to be better and improves the use experience of the user.

As shown in fig. 3 to 8, in the present embodiment, a transmission 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 above structure has several advantages: firstly, for the pressure cooking appliances with the same distance between the driving mechanism 50 and the pressure limiting valve 30, the above structure enables the length of the transmission member 60 and the bracket 43 to be smaller, thereby avoiding the phenomenon that the produced product is deformed and further avoiding the interference between the transmission member and the pressure limiting valve 30 when the transmission member rotates; secondly, the above structure makes the space occupied by the transmission member 60 and the bracket 43 smaller, and the swing range of the bracket 43 can be larger. Due to the increase of the swing range, the farther the distance between the support 43 and the pressure limiting valve 30 can be, the less the magnetic structure can influence the pressure limiting valve 30, and the pressure cooking appliance can be guaranteed to 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 structure is simple, the precision is high, and the pressure regulation is easier to control.

As shown in fig. 1 to 4, in the present embodiment, the cooking appliance is an electric pressure cooker, the lid 20 includes a surface cover, an inner liner 21 and an inner cover 22, which are sequentially arranged from outside to inside, and the pressure regulating mechanism 40 is pivotally arranged on the inner liner 21. An exhaust pipe is provided through the inner lid 22, and the exhaust passage 2 is formed by a passage in the exhaust pipe.

In this embodiment, the cooking appliance further comprises a safety valve, and the pressure limiting valve only plays a role of limiting pressure and does not play a role of the safety valve, so that the pressure limiting valve can be made lighter to achieve the purpose of continuously exhausting air.

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

1. A pressure cooking appliance, comprising:

a pan (10) having 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 channel (2);

a pressure limiting valve (30) cooperating 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), 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 the self gravity and the repulsive force;

a heating device for heating the food in the cooking chamber (1).

2. Pressure cooking appliance according to claim 1, characterised in that said second magnetic structure (41) is a plurality, the magnitude of the repulsion force generated when each second magnetic structure (41) is opposite to the first magnetic structure (31) being different so as to make the operating pressure of said pressure limiting valve (30) different.

3. Pressure cooking appliance according to claim 1, characterised in that said pressure regulating mechanism (40) further comprises a third magnetic structure (42), if said first magnetic structure (31) is opposite to said third magnetic structure (42), a magnetic attraction force is generated between said first magnetic structure (31) and said third magnetic structure (42), said pressure limiting valve (30) being able to move away from said exhaust channel (2) under the action of said magnetic attraction force.

4. Pressure cooking appliance according to claim 3, characterised in that said first magnetic structure (31) is a first magnetic block, said second magnetic structure (41) is a second magnetic block and said third magnetic structure (42) is a third magnetic block.

5. Pressure cooking appliance according to claim 4, characterised in that the pressure regulating mechanism (40) further comprises a bracket (43) pivotably arranged on the pot cover (20), the second and third magnetic blocks being arranged on the bracket (43).

6. Pressure cooking appliance according to claim 1, characterised in that the pressure limiting valve (30) can cooperate with the exhaust channel (2) under the effect of its own weight if the pressure regulating mechanism (40) is remote from the pressure limiting valve (30).

7. The pressure cooking appliance of claim 1, further comprising:

and the driving mechanism (50) drives the pressure regulating mechanism (40) to translate or rotate relative to the pot cover (20).

8. Pressure cooking appliance according to claim 7, wherein a transmission (60) is provided between the drive mechanism (50) and the pressure regulating mechanism (40) to transmit the driving force of the drive mechanism (50) to the pressure regulating mechanism (40).

9. Pressure cooking appliance according to claim 8, characterised in that the drive mechanism (50) is an electric motor and the transmission element (60) is a gear wheel which cooperates with an output shaft of the electric motor, the pressure regulating mechanism (40) being provided with cooperating teeth (431) which cooperate with the gear wheel.

10. The pressure cooking appliance according to claim 1, wherein the cooking appliance is an electric pressure cooker, the pot cover (20) comprises a surface cover, an inner liner (21) and an inner cover (22) which are arranged in sequence from outside to inside, and the pressure regulating mechanism (40) is pivotally arranged on the inner liner (21).