A quick pressure relief structure and pressure relief method for a pressure cooker

Abstract

The present invention discloses a quick pressure relief structure for a pressure cooker, comprising a pot cover, a pot body, a water pipe, a water storage device, an on-off valve, and an exhaust valve. One end of the water pipe is connected to the water storage device, and the other end of the water pipe extends into the pot body. The on-off valve is used to control the on-off of the pipeline between the water pipe and the water storage device, and the exhaust valve is used to control the on-off of the inside of the pot body and the outside of the pot body. The present invention also discloses a pressure relief method for a pressure cooker. The pressure relief time of the present invention is greatly shortened, which effectively prevents the problems of long waiting time and poor food taste caused by too long pressure relief time.

Description

Technical Field

[0001] The invention relates to the technical field of pressure cookers, in particular to a quick pressure relief structure of a pressure cooker and a pressure relief method thereof. Background Art

[0002] Pressure cookers use the physical phenomenon that the boiling point of liquids increases under higher pressure to apply pressure to water, allowing it to reach a higher temperature without boiling, thus speeding up the efficiency of stewing food. It can be used to heat steamed food to over 100°C. In high altitude areas, using a pressure cooker can avoid the problem of water boiling point lowering and making it difficult to cook food.

[0003] After the pressure cooker is finished cooking, because there is high pressure in the pot, in order to ensure safety, you must wait until the pot body cools down before opening the lid. Common methods include cooling it naturally at room temperature, or cooling it with cold water to achieve the pressure relief function before opening the lid.

[0004] However, this technology has the following shortcomings: the waiting time is relatively long, generally 10 to 30 minutes, and if it is in the plateau area, the waiting time is even longer. This affects the taste of the food, especially for soupy foods such as boiled noodles. Either the heat in the pressure cooker will overcook the food due to the long opening process, or people stop heating the pressure cooker in advance and want to use the residual heat in the pot to cook the noodles. It is difficult to control the timing of turning off the fire, which often results in uncooked fillings, loose batter, and poor taste. Especially for families living in plateau areas such as Yunnan, Guizhou, Sichuan, Gansu, Qinghai, and Xinjiang, most of them have the habit of liking pasta, which brings many inconveniences to users. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a quick pressure relief structure of a pressure cooker and a pressure relief method thereof, which solve the problems of the prior art pressure cooker, such as long pressure relief time and easy impact on food taste.

[0006] A quick pressure relief structure for a pressure cooker comprises a cooker cover, a cooker body, a water pipe, a water storage device, an on-off valve and an exhaust valve. One end of the water pipe is connected to the water storage device, and the other end of the water pipe extends into the cooker body. The on-off valve is used to control the on-off of the pipeline between the water pipe and the water storage device, and the exhaust valve is used to control the on-off of the inside of the cooker body and the atmosphere outside the cooker body.

[0007] In this technical solution, after the food with soup (such as noodles, etc.) is cooked under high pressure in the pot, the on-off valve is placed in an open state. Since the pot is in a high pressure state and the water storage device is in a normal pressure state, this pressure difference allows the soup in the pot to quickly enter the water storage device through the water pipe. When the soup in the pot has completely entered the water storage device, the on-off valve is placed in a closed state. At this time, most of the pressure in the pot has been released, and the conditions for opening the pot lid have been met. The remaining small amount of pressure generated by the steam can be discharged by opening the exhaust valve, and the on-off valve is placed in an open state, so that the soup in the water storage device flows back into the pot. The time for pressure relief is greatly shortened, which effectively prevents the problems of long waiting time and poor food taste caused by too long pressure relief time.

[0008] Preferably, the other end of the water pipe extends into the bottom of the pot body, which is conducive to draining the water in the pot body more fully.

[0009] Preferably, a steaming rack is further included, the steaming rack being arranged above the water inlet of the water pipe in the pot body, and the steaming rack dividing the internal space of the pot body into a first cavity and a second cavity from top to bottom. The food is placed in the space between the steaming rack and the pot cover for heating, and the water covers the food. After the food is cooked, the soup in the pot body enters the water storage device through the water pipe. Due to the blocking and isolating effect of the steaming rack on the food, the food will not enter the water pipe with the soup, thereby preventing the food from clogging the water pipe, and also reducing the entanglement or breakage of the food caused by the stirring and collision of the food in the process of the soup flowing, thereby effectively ensuring the taste of the food.

[0010] Preferably, a steam rack positioning device is further included, one end of which passes through the steam rack from the second cavity into the first cavity, and the other end of which contacts the bottom of the second cavity. The steam rack positioning device is conducive to maintaining the stability of the position of the steam rack and preventing the position change caused by the rolling of water and the increase of pressure in the pot during the heating process, thereby enhancing reliability.

[0011] Preferably, a water hole is provided at one end of the water pipe extending into the pot body, and the portion of the water pipe where the water hole is located is arranged in the second cavity. The arrangement of the water hole increases the cross-sectional area of ​​the soup entering the water pipe, thereby increasing the speed of the soup entering the water pipe, further shortening the time for the soup in the pot body to completely enter the water storage device, thereby further shortening the pressure relief time. The portion of the water pipe where the water hole is located is arranged in the second cavity, which ensures that the speed of entering the water pipe is increased while effectively preventing food from entering the water pipe through the water hole.

[0012] Preferably, the water storage device is arranged above the pot cover, outside the pot body or at the bottom of the pot body. The position of the water storage device can be appropriately changed according to the convenience of use and the size of the pot body, meeting the diversity of market demand.

[0013] Preferably, a pump is provided in the water storage device, and the output end of the pump is connected to the inside of the pot body through a pipeline. When the bottom of the water storage device is lower than the bottom of the pot body, the pump provides power for the noodle soup to flow back into the pot body. When the bottom of the water storage device is higher than the bottom of the pot body, the pump can be left on and the noodle soup can flow back into the pot body by the gravity of the noodle soup. The pump plays a boosting role. The pipeline can pass directly through the water pipe, or a separate return pipeline can be provided.

[0014] Preferably, the water storage device is a water tank. Water tanks are widely used in our daily life, and correspondingly, a water tank cover, a water tank buckle, a water tank push rod, and a water tank thread can be added to make the water tank work better.

[0015] Preferably, the on-off valve is a manual valve or a solenoid valve. The manual valve is relatively simple to install and use, and has a low cost; the solenoid valve is convenient for automatic control.

[0016] A pressure relief method for a pressure cooker comprises the following steps in sequence:

[0017] a: Add water to the pot, cover it, and heat it to boiling at normal pressure;

[0018] b: When the water boils, open the pot lid, put the food in, then close the pot lid and heat under pressure;

[0019] c: When the time required for cooking the food is reached, the on-off valve is placed in the open state, and the soup enters the water storage device through the water pipe;

[0020] d: When the soup in the pot has completely entered the water storage device, the on-off valve is placed in the off state;

[0021] e: Open the exhaust valve to discharge the remaining steam in the pot;

[0022] f: Put the on-off valve in the open state, and the soup flows back into the pot through the water pipe;

[0023] g: When the soup has completely returned to the pot, open the lid.

[0024] The pressure relief method can significantly shorten the pressure relief time, effectively preventing the problems of long waiting time and poor food taste caused by excessively long pressure relief time.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] (1) The pressure relief time of the present invention is greatly shortened, which effectively avoids the problems of long waiting time and poor food taste caused by too long pressure relief time;

[0027] (2) The present invention is conducive to draining the water in the pot more fully, effectively preventing food from clogging the water pipe;

[0028] (3) The present invention ensures that the speed of food entering the water pipe is increased while effectively preventing food from entering the water pipe through the water hole;

[0029] (4) The position of the water storage device of the present invention can be appropriately changed according to the convenience of use and the size of the pot body, thereby meeting the diversity of market demand;

[0030] (5) The manual valve of the present invention is relatively simple to install and use, and has low cost; the electromagnetic valve is convenient for automatic control. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the present invention;

[0032] Figure 2 A cross-sectional view of the present invention;

[0033] Figure 3 It is a side view of the present invention.

[0034] The marks and corresponding parts names in the attached drawings are: 1. Shell, 2. Base, 3. Middle cover, 4. Upper inner cover, 5. Water storage device, 6. Water tank cover, 7. Top cover, 8. Handle, 9. Lock cover buckle, 10. Flip cover seat, 11. Flip cover arm, 12. Inner pot base, 13. Panel, 14. Pressure reducing valve, 15. Inner aluminum cover, 16. Push rod cover plate, 17. Water tank buckle, 18. Water tank push rod, 19. Spring, 20. Inner pot handle, 21. Water tank thread, 22. Pot body, 23. Pot cover, 24. Handle pressure Plate, 25. First locking cover pull plate, 26. Second locking cover pull plate, 27. Insulation cover, 28. Heating plate, 29. Decorative ring, 30. Steaming rack, 31. Drain pipe, 32. Exhaust valve, 33. Rear rotating shaft, 34. Positioning shaft, 35. Safety valve, 36. Spring, 37. Connecting sealing ring, 38. Drain valve sealing cover, 40. Micro switch, 41. Main board, 42. Control board, 43. On-off valve, 44. Water hole, 45. Steaming rack positioning device, 221. First cavity, 222. Second cavity. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0036] It should be noted that the pressure cooker described in the present invention can also be used for stewing, cooking rice noodles, cooking vermicelli, cooking noodle dumplings, etc.; the present invention can be used in high-altitude areas as well as low-altitude areas; the on-off valve is used to control the on-off of the fluid in the water pipe, the water pipe can be a hard water pipe or a soft water pipe, the on-off valve and the water pipe can be a connection method in which both ends are connected to the water pipe, or a connection method in which a water pipe (such as a hose) that is easily deformed is opened or closed by clamping and loosening, because both belong to existing mature technologies, no further principle and structure elaboration is made; the time described in the present invention (such as the time required for cooking noodles) varies according to the altitude and the thickness of the noodles, and is relatively easy to obtain through testing during use, so the actual time value can often be obtained by simply using it a few times, and the time setting can be achieved by manually setting or by adding an electronic control system, which is not described in detail.

[0037] Example 1

[0038] like Figures 1 to 3 As shown, a quick pressure relief structure of a pressure cooker includes a pot cover 23, a pot body 22, a water pipe 31, a water storage device 5, an on-off valve 43, and an exhaust valve 32. One end of the water pipe 31 is connected to the water storage device 5, and the other end of the water pipe 31 extends into the pot body 22. The on-off valve 43 is used to control the on-off of the pipeline between the water pipe 31 and the water storage device 5, and the exhaust valve 32 is used to control the on-off of the inside of the pot body 22 and the atmosphere outside the pot body 22.

[0039] On the plateau, the pressure cooker of the present invention is used to cook noodles: water is added into the pot body 22, and the pot cover 23 is closed. At this time, the on-off valve 43 is closed, the exhaust valve 32 is closed, and heating is performed; after the water boils, the pot cover 23 is opened, the noodles are put in, and the pot cover 23 is closed again, and the cooking continues. When the noodles are cooked for a required time, the on-off valve 43 is opened. Since the pot body 22 is in a high pressure state and the water storage device 5 is in a normal pressure state, this pressure difference allows the noodle soup in the pot body 22 to quickly enter the water storage device 5 through the water pipe 31; when the noodle soup in the pot body 22 completely enters the water storage device 5, the on-off valve 43 is closed. At this time, most of the pressure in the pot body 22 has been released, and the condition for opening the pot cover 23 has been met. The remaining small amount of pressure generated by the steam can be discharged by opening the exhaust valve 32, and the on-off valve 43 is opened, so that the noodle soup in the water storage device 5 flows back into the pot body 22. In this embodiment, the pressure relief time is greatly shortened (after testing, the pressure relief can be completed in more than ten seconds), which effectively prevents the problems of long waiting time and poor noodle taste caused by too long pressure relief time.

[0040] The outer shell 1, base 2, middle cover 3, upper inner cover 4, top cover 7, handle 8, lock cover buckle 9, flip cover seat 10, flip cover support arm 11, liner base 12, panel 13, inner aluminum cover 15, push rod cover plate 16, spring 19, liner handle 20, handle pressure plate 24, first lock cover pull plate 25, second lock cover pull plate 26, insulation cover 27, heating plate 28, decorative ring 29, pressure reducing valve 14, rear rotating shaft 33, positioning shaft 34, safety valve 35, spring 36, connecting sealing ring 37, micro switch 40, main board 41, control board 42 belong to the existing technology or are not the innovation points of the present invention, so the above structure is not described in detail; in addition, the connection relationship between the pot body 22 and the pot cover 23 belongs to the existing mature technology, so its connection structure is not described in detail.

[0041] Preferably, the other end of the water pipe 31 extends into the bottom of the pot body 22. This is conducive to draining the water in the pot body 22 more fully.

[0042] Preferably, a steaming rack 30 is further included, and the steaming rack 30 is arranged above the water inlet of the water pipe 31 in the pot body 22, and the steaming rack 30 divides the internal space of the pot body 22 into a first cavity 221 and a second cavity 222 from top to bottom. The noodles are placed in the space between the steaming rack 30 and the pot cover 23 for heating, and the water covers the noodles. After the noodles are cooked, the noodle soup in the pot body 22 enters the water storage device 5 through the water pipe 31. Due to the blocking effect of the steaming rack 30 on the noodles, the noodles will not enter the water pipe 31 with the noodle soup, thereby preventing the noodles from blocking the water pipe 31, and also reducing the entanglement or breakage of the noodles caused by the stirring and collision of the noodles in the process of flowing with the noodle soup, so as to effectively ensure the taste of the noodles.

[0043] Preferably, a steam rack positioning device 45 is further included, one end of which passes through the steam rack 30 from the second cavity 222 and enters the first cavity 221, and the other end of the steam rack positioning device 45 contacts the bottom of the second cavity 222. The steam rack positioning device 45 is conducive to maintaining the stability of the position of the steam rack 30, and is conducive to preventing the position change caused by the rolling of water and the increase of pressure in the pot body 22 during the heating process, thereby enhancing reliability.

[0044] Preferably, one end of the water pipe 31 extending into the pot body 22 is provided with a water hole 44, and the portion of the water pipe 31 where the water hole 44 is located is located in the second cavity 222. The provision of the water hole 44 increases the cross-sectional area of ​​the soup entering the water pipe 31, thereby increasing the speed of the soup entering the water pipe 31, further shortening the time for the noodle soup in the pot body 22 to completely enter the water storage device 5, thereby further shortening the pressure relief time. The portion of the water pipe 31 where the water hole 44 is located is located in the second cavity 222, which ensures that the speed of entering the water pipe 31 is increased while effectively preventing noodles from entering the water pipe 31 through the water hole 44.

[0045] Example 2

[0046] like Figures 1 to 3 As shown, as a further optimization of Example 1, this embodiment includes all the technical features of Example 1. In addition, this embodiment also includes the following technical features:

[0047] Preferably, the water storage device 5 is arranged above the pot cover 23, outside the pot body 22 or at the bottom of the pot body 22. The position of the water storage device 5 can be appropriately changed according to the convenience of use and the size of the pot body 22, meeting the diversity of market demand.

[0048] Preferably, a pump is provided in the water storage device 5, and the output end of the pump is connected to the inside of the pot body 22 through a pipeline. When the bottom of the water storage device 5 is lower than the bottom of the pot body 22, the pump provides power for the noodle soup to flow back into the pot body 22. When the bottom of the water storage device 5 is higher than the bottom of the pot body 22, the pump can be left on and the noodle soup can flow back into the pot body 22 by the gravity of the noodle soup. The pump plays a boosting role. The pipeline can directly pass through the water pipe 31, or a separate return pipeline can be provided.

[0049] Preferably, the water storage device 5 is a water tank. Water tanks are widely used in our daily life, and correspondingly, a water tank cover 6, a water tank buckle 17, a water tank push rod 18, and a water tank thread 21 can be added to make the water tank work better.

[0050] Preferably, the on-off valve 43 is a manual valve or a solenoid valve. The manual valve is relatively simple to install and use, and has a low cost; the solenoid valve is convenient for automatic control.

[0051] Example 3

[0052] A pressure relief method for a pressure cooker comprises the following steps in sequence:

[0053] a: Add water into the pot body 22, cover the pot with the lid 23, and heat to boiling at normal pressure;

[0054] b: When the water boils, open the pot cover 23, put the food in, and then cover the pot cover 23 to heat under pressure;

[0055] c: When the time required for cooking the food is reached, the on-off valve 43 is placed in an open state, and the soup enters the water storage device 5 through the water pipe 31;

[0056] d: When the soup in the pot body 22 completely enters the water storage device 5, the on-off valve 43 is placed in the off state;

[0057] e: Open the exhaust valve 32 to discharge the remaining steam in the pot body 22;

[0058] f: The on-off valve 43 is placed in an open state, and the soup flows back into the pot body 22 through the water pipe 31;

[0059] g: When the soup completely flows back into the pot body 22, open the pot cover 23.

[0060] As described above, the present invention can be preferably implemented.

[0061] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. According to the technical essence of the present invention, within the spirit and principles of the present invention, any simple modification, equivalent replacement and improvement made to the above embodiment still falls within the protection scope of the technical solution of the present invention.

Claims

1. A quick pressure relief structure for a pressure cooker, comprising a cooker cover (23) and a cooker body (22), characterized in that: The invention also comprises a water pipe (31), a water storage device (5), an on-off valve (43), and an exhaust valve (32); one end of the water pipe (31) is connected to the water storage device (5); the other end of the water pipe (31) extends into the pot body (22); the on-off valve (43) is used to control the on-off of the pipeline between the water pipe (31) and the water storage device (5); the exhaust valve (32) is used to control the on-off of the inside of the pot body (22) and the atmosphere outside the pot body (22); the other end of the water pipe (31) is connected to the water storage device (5); the other end of the water pipe (31) is connected to the water storage device (5); the exhaust valve (32) is used to control the on-off of the inside of the pot body (22) and the atmosphere outside the pot body (22); The water pipe (31) extends into the bottom of the pot body (22); and further comprises a steaming grid (30), the steaming grid (30) being arranged above the water inlet of the water pipe (31) in the pot body (22); the steaming grid (30) divides the internal space of the pot body (22) into a first cavity (221) and a second cavity (222) from top to bottom; a water hole (44) is provided at one end of the water pipe (31) extending into the pot body (22); the portion of the water pipe (31) where the water hole (44) is located is arranged in the second cavity (222).

2. The quick pressure relief structure of a pressure cooker according to claim 1, characterized in that: It also comprises a steaming grid positioning device (45), one end of which passes through the steaming grid (30) from the second cavity (222) into the first cavity (221), and the other end of which contacts the bottom of the second cavity (222).

3. The quick pressure relief structure of a pressure cooker according to claim 1, characterized in that: The water storage device (5) is arranged above the pot cover (23), outside the pot body (22) or at the bottom of the pot body (22).

4. The quick pressure relief structure of a pressure cooker according to claim 3, characterized in that: A pump is provided in the water storage device (5), and the output end of the pump is connected to the interior of the pot body (22) through a pipeline.

5. The quick pressure relief structure of a pressure cooker according to claim 1, characterized in that: The water storage device (5) is a water tank.

6. The quick pressure relief structure of a pressure cooker according to claim 1, characterized in that: The on-off valve (43) is a manually controlled valve or an electromagnetic valve.

7. A pressure relief method for a pressure cooker having a quick pressure relief structure according to any one of claims 1 to 6, characterized in that: The following steps are included in sequence: a: Add water into the pot body (22), cover the pot with a lid (23), and heat to boiling at normal pressure; b: When the water boils, open the pot lid (23), put the food in, and then close the pot lid (23) to heat under pressure; c: When the time required for cooking the food is reached, the on-off valve (43) is placed in an open state, and the soup enters the water storage device (5) through the water pipe (31); d: When the soup in the pot body (22) completely enters the water storage device (5), the on-off valve (43) is placed in the off state; e: opening the exhaust valve (32) to discharge the remaining steam in the pot body (22); f: The on-off valve (43) is placed in an open state, and the soup flows back into the pot body (22) through the water pipe (31); g: When the soup has completely returned to the pot body (22), open the pot lid (23).

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