Pressure Cooking Appliances

Abstract

The present invention provides a pressure cooking device including: a pot body having a cooking cavity; a pot cover, which is arranged on the pot body and is provided with an exhaust passage; a pressure limiting valve, which cooperates with the exhaust passage, and the pressure limiting valve includes a first magnetic structure; a pressure regulating mechanism, which can translate or rotate relative to the pot cover, and the pressure regulating mechanism includes a second magnetic structure, and if the first magnetic structure is opposite to the second magnetic structure, a repulsive force is generated between the first magnetic structure and the second magnetic structure, so that the pressure limiting valve can cooperate with the exhaust passage under the action of its own gravity and the repulsive force. A heating device is used to heat the food in the cooking cavity. The application of the technical solution of the present invention can effectively solve the problem of high production cost of the pressure limiting valve of the pressure cooking device capable of adjusting the pressure in the prior art.

Description

Technical Field

[0001] The present invention relates to the field of small household appliances, and in particular to a pressure cooking device. Background Art

[0002] Electric pressure cookers are commonly used household appliances. In order to achieve the function of multi-stage pressure regulation, some electric pressure cooker products are provided with a counterweight block whose position can be adjusted at the pressure limiting valve. In the prior art, the position adjustment of the counterweight block is driven by a mechanical structure, such as a solenoid valve, a lever, an electric push rod, etc. The solution of using the above-mentioned counterweight block to control the pressure of the electric pressure cooker makes the structure of the pressure limiting valve complicated and the production cost high. Summary of the invention

[0003] The main purpose of the present invention is to provide a pressure cooking appliance to solve 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.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a pressure cooking device, comprising: a pot body, having a cooking cavity; a pot cover, which is arranged on the pot body and is provided with an exhaust passage; a pressure limiting valve, which cooperates with the exhaust passage, and the pressure limiting valve comprises a first magnetic structure; a pressure regulating mechanism, which can move horizontally or rotate relative to the pot cover, and the pressure regulating mechanism comprises a second magnetic structure, and if the first magnetic structure is opposite to the second magnetic structure, a repulsive force is generated between the first magnetic structure and the second magnetic structure, so that the pressure limiting valve can cooperate with the exhaust passage under the action of its own gravity and the repulsive force; and a heating device, which is used to heat the food in the cooking cavity.

[0005] Furthermore, there are multiple second magnetic structures, and the magnitude of the repulsive force generated by each second magnetic structure when facing the first magnetic structure is different, so that the working pressure of the pressure-limiting valve is different.

[0006] Furthermore, the pressure regulating mechanism also includes a third magnetic structure. If the first magnetic structure is opposite to the third magnetic structure, a magnetic attraction force is generated between the first magnetic structure and the third magnetic structure, and the pressure limiting valve can be moved away from the exhaust channel under the action of the magnetic attraction force.

[0007] 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.

[0008] Furthermore, the pressure regulating mechanism also includes a bracket pivotally arranged on the pot cover, and the second magnetic block and the third magnetic block are arranged on the bracket.

[0009] Furthermore, if the pressure regulating mechanism is far away from the pressure limiting valve, the pressure limiting valve can cooperate with the exhaust passage under the action of its own gravity.

[0010] Furthermore, the pressure cooking appliance further comprises: a driving mechanism, which drives the pressure regulating mechanism to move in translation or rotation relative to the pot cover.

[0011] Furthermore, a transmission member is provided between the driving mechanism and the pressure regulating mechanism to transmit the driving force of the driving mechanism to the pressure regulating mechanism.

[0012] Furthermore, the driving mechanism is a motor, the transmission member is a gear, the gear cooperates with the output shaft of the motor, and the voltage regulating mechanism is provided with matching teeth that cooperate with the gear.

[0013] Furthermore, the cooking appliance is an electric pressure cooker, the pot cover comprises a surface cover, a lining and an inner cover which are arranged in sequence from the outside to the inside, and the pressure regulating mechanism is pivotally arranged on the lining.

[0014] By applying the technical solution of the present invention, when the first magnetic structure is opposite to the second magnetic structure, a 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 its own gravity and repulsive force. When the gas pressure in the cooking chamber is sufficient to overcome the sum of the gravity and repulsive force of the pressure limiting valve, the pressure limiting valve can be lifted up to achieve exhaust, so that the pressure cooking appliance can work 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 its own gravity. When the gas pressure in the cooking chamber is sufficient to overcome the gravity of the pressure limiting valve, the pressure limiting valve can be lifted up to achieve exhaust, so that the pressure cooking appliance can work at the second working pressure. The above structure controls the pressure in the cooking chamber by applying a repulsive force to the pressure limiting valve, so that the pressure limiting valve does not need to add a counterweight structure, thereby simplifying the structure of the pressure limiting valve, and further reducing the processing difficulty and production cost of the pressure limiting valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 A schematic longitudinal section view of an embodiment of a pressure cooking device according to the present invention is shown;

[0017] Figure 2 Shows Figure 1 An enlarged structural schematic diagram of a pressure cooking device at A;

[0018] Figure 3 Shows Figure 1 An exploded structural diagram of a pressure cooking apparatus;

[0019] Figure 4 Shows Figure 3 An enlarged structural schematic diagram of a pressure cooking device at B;

[0020] Figure 5 Shows Figure 1 A schematic diagram of the three-dimensional structure of the liner when the support of the pressure cooking device is in a first position;

[0021] Figure 6 Shows Figure 1 A schematic diagram of the three-dimensional structure of the liner when the support of the pressure cooking device is in the second position;

[0022] Figure 7 Shows Figure 1 A schematic diagram of the three-dimensional structure of the liner when the support of the pressure cooking device is in a third position; and

[0023] Figure 8 Shows Figure 1 A schematic diagram of the three-dimensional structure of the liner when the support of the pressure cooking appliance is in the fourth position.

[0024] The above drawings include the following reference numerals:

[0025] 1. cooking cavity; 2. exhaust channel; 10. pot body; 20. pot cover; 21. lining; 22. inner cover; 30. pressure limiting valve; 31. first magnetic structure; 40. pressure regulating mechanism; 41. second magnetic structure; 42. third magnetic structure; 43. bracket; 431. matching teeth; 50. driving mechanism; 60. transmission member. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] like Figures 1 to 4 , Figure 7 and Figure 8 As shown, in this embodiment, the pressure cooking device includes: a pot body 10, a pot cover 20, a pressure limiting valve 30, a pressure regulating mechanism 40 and a heating device. The pot body 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 an exhaust channel 2. The pressure limiting valve 30 cooperates with the exhaust channel 2, and the pressure limiting valve 30 includes a first magnetic structure 31. The pressure regulating mechanism 40 can move horizontally or rotate relative to the pot cover 20, and 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 cooperate with the exhaust channel 2 under the action of its own gravity and repulsive force. The heating device is used to heat the food in the cooking cavity 1.

[0028] By applying the technical solution of this embodiment, when the first magnetic structure 31 and the second magnetic structure 41 are opposite to each other, 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 repulsive force. When the gas pressure in the cooking chamber 1 is sufficient to overcome the sum of the gravity and repulsive force of the pressure limiting valve 30, the pressure limiting valve 30 can be lifted up to achieve exhaust, so that the pressure cooking appliance can work 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 gravity. When the gas pressure in the cooking chamber 1 is sufficient to overcome the gravity of the pressure limiting valve 30, the pressure limiting valve 30 can be lifted up to achieve exhaust, so that the pressure cooking appliance can work at the second working pressure. The above structure controls the pressure in the cooking chamber 1 by applying a repulsive force to the pressure limiting valve 30, so that the pressure limiting valve 30 does not need to increase the counterweight structure, thereby simplifying the structure of the pressure limiting valve, thereby reducing the processing difficulty and production cost of the pressure limiting valve.

[0029] like Figures 3 to 8 As shown, in this embodiment, there are multiple second magnetic structures 41, and the magnitude of the repulsive force generated when each second magnetic structure 41 is opposite to the first magnetic structure 31 is different, so that the working pressure of the pressure limiting valve 30 is different. For example, in this embodiment, there are two second magnetic structures 41, and the repulsive force generated when one of the two second magnetic structures 41 is opposite to the first magnetic structure 31 is the first repulsive force, and the repulsive force generated when the other second magnetic structure 41 is opposite to the first magnetic structure 31 is the second repulsive force, and the first repulsive force is greater than the second repulsive force. Therefore, different second magnetic structures 41 are opposite to the pressure limiting valve 30, so that the downward combined force (the combined force of the gravity and repulsive force of the pressure limiting valve) received by the pressure limiting valve 30 is different, and finally the function of multi-stage pressure regulation is realized. The above structure is simple, and the cooking effect of the pressure cooking appliance can be better when multi-stage pressure regulation is set according to actual needs. Of course, in other embodiments, the second magnetic structure 41 can also be 3 or more.

[0030] like Figure 3 , Figure 4 and Figure 6 As shown, in this 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 is generated between the first magnetic structure 31 and the third magnetic structure 42, and the pressure limiting valve 30 can be moved away from the exhaust passage 2 under the action of the magnetic attraction to achieve pressure-free cooking. The above structure is simple, can achieve different cooking modes, and improve the cooking effect of the pressure cooking appliance.

[0031] like Figures 1 to 8 As shown, in this 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 above structure is simple and low in cost.

[0032] like Figures 1 to 8 As shown, in this embodiment, the pressure regulating mechanism 40 further includes a bracket 43 pivotally arranged on the pot cover 20, and the second magnetic block and the third magnetic block are arranged on the bracket 43. Specifically, in this embodiment, the second magnetic block is two (hereinafter distinguished as the second magnetic block a and the second magnetic block b, the second magnetic block a can generate the above-mentioned second repulsive force when it is opposite to the first magnetic block, and the second magnetic block b can generate the above-mentioned first repulsive force when it 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.

[0033] like Figure 5 As shown, when the bracket 43 rotates to the point where the second magnetic block a, the second magnetic block b and the third magnetic block are all 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 chamber 1 is sealed by the deadweight of the pressure limiting valve 30 to seal the exhaust channel. For example, the deadweight of the pressure limiting valve 30 can only withstand a pressure of 30KPA. When the pressure in the cooking chamber 1 is less than 30KPA, the pressure limiting valve 30 seals the exhaust channel, and there will be no leakage at the sealing point between the pressure limiting valve 30 and the exhaust channel. When the pressure in the cooking chamber 1 is greater than 30KPA, the pressure limiting valve 30 will be pushed upward, so that the pressure limiting valve 30 is separated from the exhaust channel and cannot be sealed. At this time, the exhaust can be continuously exhausted to achieve low-pressure cooking, effectively discharge the chlorine and odor in the pot, and the cooked food tastes good.

[0034] like Figure 6 As shown, when the bracket 43 rotates to the point where the third magnetic block is opposite to the first magnetic block (the second position of the bracket), the third magnetic block attracts the first magnetic block, and the pressure limiting valve 30 is sucked up and away from the exhaust passage, thereby achieving pressure-free cooking.

[0035] like Figure 7 As shown, when the bracket 43 rotates to the point 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 above-mentioned second repulsive force plus the force that the pressure limiting valve 30 can withstand by its own weight realizes medium-pressure cooking (for example: the weaker repulsive force plus the weight of the pressure limiting valve 30 itself enables the pressure limiting valve 30 to withstand a pressure of 70KPA). When the pressure in the cooking chamber 1 is less than 70KPA, the pressure limiting valve 30 is sealed with the exhaust channel, and there will be no leakage at the sealing point between the pressure limiting valve 30 and the exhaust channel. When the pressure in the cooking chamber 1 is greater than 70KPA, the pressure limiting valve 30 will be pushed upward, so that the sealing point between the pressure limiting valve 30 and the exhaust channel is separated and cannot be sealed. At this time, the exhaust can be continuously exhausted to realize medium-pressure cooking, and the chlorine, odor, etc. in the pot can be effectively discharged.

[0036] like Figure 8As shown, when the bracket 43 rotates to the point where the second magnetic block b is opposite to the first magnetic block (the fourth position of the bracket), a relatively strong first repulsive force is formed between the second magnetic block b and the first magnetic block. The above-mentioned first repulsive force plus the force that the pressure limiting valve 30 can withstand by its own weight realizes high-pressure cooking (for example: the relatively strong repulsive force plus the pressure limiting valve 30's own weight enables the pressure limiting valve 30 to withstand a pressure of 100KPA). When the pressure in the cooking cavity 1 is less than 100KPA, the pressure limiting valve 30 seals the exhaust channel, and there will be no leakage at the sealing point between the pressure limiting valve 30 and the exhaust channel. When the pressure in the cooking cavity 1 is greater than 100KPA, the pressure limiting valve 30 will be pushed upward, so that the pressure limiting valve 30 and the exhaust channel seal are separated and cannot be sealed. At this time, the exhaust can be continuously discharged to realize high-pressure cooking, and the chlorine, odor, etc. in the pot can be effectively discharged.

[0037] It should be noted that the above-mentioned pressure limiting valve 30 can withstand 30KPA by its own weight and can achieve 70KPA and 100PA under the action of the magnet repulsion force. This is just an example and is not limited to these parameters. Different parameter values ​​can be set as needed.

[0038] like Figure 3 and Figure 4 As shown, the pressure cooking appliance further comprises a driving mechanism 50, which drives the pressure regulating mechanism 40 to translate or rotate relative to the pot cover 20. Preferably, in this embodiment, the driving mechanism 50 is a driving motor, which can drive the pressure regulating mechanism 40 to rotate relative to the pot cover 20. The above structure is simple and easy to implement.

[0039] In the present embodiment, the pressure cooking appliance further includes a control panel, which can control the action of the driving mechanism 50 to achieve pressure-free, low-pressure, medium-pressure, and high-pressure cooking. It should be noted that in the present embodiment, during a cooking process, the control panel can control the driving motor to rotate forward or reverse to perform combination cooking (for example, a high-pressure, low-pressure combination; a high-pressure, medium-pressure combination; a high-pressure, medium-pressure, no-pressure combination; a high-pressure, medium-pressure, low-pressure, no-pressure combination, etc.). That is, in the above cooking process, one or more groups of combination cooking can be selected, and it is not limited to the operation of cooking with only one pressure at a time. Therefore, the above structure makes the cooking effect better and improves the user experience.

[0040] like Figures 3 to 8As shown, in this 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 above structure has the following advantages: First, for the pressure cooking apparatus with the same distance between the driving mechanism 50 and the pressure limiting valve 30, the above structure makes the length of the transmission member 60 and the bracket 43 smaller, thereby avoiding the deformation of the produced product, and further avoiding the interference of the transmission member with the pressure limiting valve 30 when rotating; second, 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 in the swing range, the distance between the bracket 43 and the pressure limiting valve 30 can be farther, and the influence of the magnetic structure on the pressure limiting valve 30 can be smaller, ensuring that the pressure cooking apparatus can cook at a predetermined low pressure.

[0041] like Figures 3 to 8 As shown, in this embodiment, the driving mechanism 50 is a motor, the transmission member 60 is a gear, the gear cooperates with the output shaft of the motor, and the pressure regulating mechanism 40 is provided with a matching tooth 431 that cooperates with the gear. The above structure is simple and has high precision, making the pressure regulation easier to control.

[0042] like Figures 1 to 4 As shown, in this embodiment, the cooking appliance is an electric pressure cooker, and the pot cover 20 includes a surface cover, an inner liner 21 and an inner cover 22 arranged in sequence from the outside to the inside, and the pressure regulating mechanism 40 is pivotally arranged on the inner liner 21. An exhaust pipe is passed through the inner cover 22, and the channel in the exhaust pipe forms the exhaust channel 2 mentioned above.

[0043] In this embodiment, the cooking appliance further includes a safety valve, and the pressure limiting valve only serves to limit pressure but not to serve as a safety valve. Therefore, the pressure limiting valve can be made lighter to achieve the purpose of continuous exhaust.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pressure cooking device, characterized in that: include: A pot body (10) having a cooking cavity (1); A pot cover (20) is arranged on the pot body (10), and the pot cover (20) is provided with an exhaust passage (2); A pressure limiting valve (30) cooperates with the exhaust passage (2), the pressure limiting valve (30) comprising a first magnetic structure (31); The pressure regulating mechanism (40) is capable of translational or rotational movement relative to the pot cover (20), and the pressure regulating mechanism (40) comprises 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 cooperate with the exhaust channel (2) under the action of its own gravity and the repulsive force. A heating device is used to heat the food in the cooking cavity (1).

2. The pressure cooking device according to claim 1, characterized in that: There are a plurality of second magnetic structures (41), and each of the second magnetic structures (41) generates a different magnitude of repulsive force when facing the first magnetic structure (31), so that the working pressure of the pressure limiting valve (30) is different.

3. The pressure cooking device according to claim 1, characterized in that: The pressure regulating mechanism (40) further comprises 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 moved away from the exhaust passage (2) under the action of the magnetic attraction force.

4. The pressure cooking device according to claim 3, characterized in that: 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.

5. The pressure cooking device according to claim 4, characterized in that: The pressure regulating mechanism (40) further comprises a bracket (43) pivotally arranged on the pot cover (20), and the second magnetic block and the third magnetic block are arranged on the bracket (43).

6. The pressure cooking device according to claim 1, characterized in that: If the pressure regulating mechanism (40) is far away from the pressure limiting valve (30), the pressure limiting valve (30) can cooperate with the exhaust passage (2) under the action of its own weight.

7. The pressure cooking device according to claim 1, characterized in that: The pressure cooking device also includes: A driving mechanism (50) drives the pressure regulating mechanism (40) to move in translation or rotation relative to the pot cover (20).

8. The pressure cooking device according to claim 7, characterized in that 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).

9. The pressure cooking device according to claim 8, characterized in that The driving mechanism (50) is a motor, the transmission member (60) is a gear, the gear cooperates with the output shaft of the motor, and the voltage regulating mechanism (40) is provided with a matching tooth (431) that cooperates with the gear.

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

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