Steam cooking pressure cooker

Abstract

The invention discloses a steam cooking pressure cooker and relates to the technical field of pressure cookers. The steam cooking pressure cooker comprises a cooker body and a cooker cover meshed with the cooker body to form a sealed space. The locking unit is used for fixing the pot cover to the top of the pot body, the interlocking unit is used for being matched with the locking unit to prevent the pot cover from being forcibly opened, and the pressure relief unit is used for judging whether the air pressure in the pot is reduced to normal pressure or not. A lifting column drives a sliding column to move in the horizontal direction, the sliding column drives a push rod to ascend, the push rod ascends to push an air leakage piece in a second fixing ring to ascend, and due to the fact that the air leakage piece of the second fixing ring is provided with an air leakage groove, when the air leakage piece ascends, whether the air pressure in the pressure cooker is reduced to the normal pressure or not can be judged according to whether steam is exhausted or not; and when the air leakage piece ascends, pressure can be quickly released through the air leakage groove, and the effect of shortening the time for waiting for eating after cooking is completed is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of pressure cookers, in particular to a steam cooking pressure cooker. Background Art

[0002] A pressure cooker, also known as a pressure cooker, is a kitchen cooker that increases internal pressure in a closed environment, thereby accelerating cooking. Its core principle is to use high pressure to increase the boiling point of water, quickly decompose the fibers of food at high temperature, and significantly shorten the cooking time. When the pot body is heated by an open flame, the internal water evaporates to produce steam. However, since the lid and the pot body form a completely enclosed space through a precisely designed interlocking tooth structure and an elastic sealing ring, the steam cannot escape, causing the air pressure in the pot to continue to rise. This pressure increase will significantly change the physical properties of water - when the working pressure reaches 80-100kPa (1.5-2 times the normal atmospheric pressure), the boiling point of water will increase accordingly to 110-120℃. The high temperature and high pressure environment can quickly destroy the cell structure of food, softening difficult-to-decompose substances such as collagen in a short time.

[0003] The pressure control system of a pressure cooker is key to its safe and efficient operation: when the pressure inside the cooker exceeds a preset threshold (usually 80kPa), steam will lift the counterweight of the pressure-limiting valve, maintaining dynamic balance through periodic exhaust. When using the pressure cooker, align the lid with the top of the cooker and rotate the handle to the locked position. At this time, the locking mechanism of the pressure cooker is activated, and the pressure gradually rises to the operating pressure during heating. The compressed steam energy accumulated in this process is equivalent to that of a small pressure vessel. After cooking, it needs to be left to cool naturally for 15 to 30 minutes. The lid can only be opened after the pressure has completely dropped to normal pressure. However, there are many safety hazards in actual use: those who lack experience often cannot accurately judge the pressure release time and are prone to trying to force open the lid before the pressure is fully released. In an emergency, some users will directly manually unplug the pressure relief valve for rapid exhaust. The high-speed steam ejected from the pot can reach a temperature of over 120°C, which can cause instant third-degree burns if it comes into contact with the skin. The sudden pressure release can also cause the boiling liquid in the pot to splash along with the steam. This improper operation may damage the delicate structure of the pressure relief valve, affecting subsequent safety.

[0004] In response to the above problems, it is urgent to carry out innovative design based on the original steam cooking pressure cooker. Summary of the Invention

[0005] The technical solution of the present invention aims at the technical problem that the existing technical solutions are too single, and provides a solution significantly different from the existing technologies. Specifically, the purpose of the present invention is to provide a steam cooking pressure cooker to solve the many safety hazards existing in actual use as mentioned in the above background technology: those lacking experience often cannot accurately judge the pressure relief time and are likely to try to forcefully open the lid when the pressure has not been fully released. Moreover, in case of emergency, some users will directly manually pull out the pressure relief valve to quickly exhaust the air. The temperature of the high-speed steam ejected from the pot can reach over 120°C, and contacting the skin will cause instant third-degree burns. Also, the sudden pressure release may cause the boiling liquid in the pot to splash along with the steam.

[0006] To achieve the above object, the present invention provides the following technical solution: A steam cooking pressure cooker includes a pot body and a pot lid that meshes with the pot body to form a sealed space. It also includes a locking unit for fixing the pot lid to the top of the pot body, an interlocking unit for cooperating with the locking unit to prevent the pot lid from being forcibly opened, and a pressure relief unit for judging whether the air pressure inside the pot has dropped to normal pressure.

[0007] A fixing frame for placing the locking unit is provided between the pot body and the pot lid. The fixing frame penetrates through the handle of the pot body, and a fixing block for placing the air release unit is provided on the inner wall of the pot body.

[0008] Preferably, the interlocking unit includes a fixing frame fixed inside the pot lid. A sliding frame is slidably connected to the outer wall of the fixing frame. A first fixing ring is provided on one side of the sliding frame, and a lifting rod is movably connected inside the first fixing ring.

[0009] Preferably, a first spring is provided between the fixing frame and the sliding frame. One end of the first spring is fixed to one side of the fixing frame, and the other end of the first spring is fixed to one side of the sliding frame.

[0010] Preferably, a sliding groove for cooperating with the sliding frame to slide is opened on one side of the first fixing ring, and a limiting groove for cooperating with the sliding frame to lock the pot lid is opened at the top end of the handle of the pot body.

[0011] Preferably, the locking unit includes a first lifting frame slidably connected inside the fixing frame. A second lifting frame is slidably connected to one side of the first lifting frame, and a rotating plate is provided between the first lifting frame and the second lifting frame. A limiting column is fixedly connected to the top end of the first lifting frame, and a groove cooperating with the limiting column is opened at the bottom end of the handle of the pot lid. A button is provided at the bottom end of the second lifting frame.

[0012] Preferably, a second spring is provided between the first lifting frame and the second lifting frame. One end of the second spring is fixed to the top end of the inner wall of the first lifting frame, and the other end of the second spring is fixed to the top end of the outer wall of the second lifting frame.

[0013] Preferably, the rotating plate is fixed inside the fixed frame through a fixed shaft. The first lifting frame is movably connected to the rotating plate through a rotating shaft, and the rotating plate is provided with a sliding groove for the mating connection shaft to slide. The second lifting frame is movably connected to the rotating plate through a connecting shaft, and the rotating plate is provided with a sliding groove for the mating rotating shaft to slide.

[0014] Preferably, the air release unit includes a lifting plate. One side of the first lifting frame is fixedly connected to the lifting plate. A lifting column is arranged at the bottom of the lifting plate. The bottom end of the lifting column is slidably connected to a sliding column. One side of the sliding column is slidably connected to a push rod. A second fixing ring is arranged at the top of the push rod. An air release member is slidably connected inside the second fixing ring.

[0015] Preferably, inclined surfaces are arranged on both sides of the sliding column. The bottom end of the lifting column is provided with an inclined surface having the same inclination angle as the sliding column. The bottom end of the push rod is provided with an inclined surface having the same inclination angle as the sliding column. And a sliding groove for the lifting column, the sliding column and the push rod to move is arranged inside the fixed block.

[0016] Preferably, the second fixing ring is fixed inside the pot lid. The second fixing ring is equiangularly provided with air release grooves for air release. The air release member is provided with a plurality of grooves having the same size as the air release holes of the second fixing ring.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. The first lifting frame drives the lifting plate to move downward, and then drives the lifting column to descend. Through the inclined surfaces provided on the lifting column and the sliding column, the movement of the lifting column drives the sliding column to move horizontally. And through the inclined surfaces provided on the sliding column and the push rod, the movement of the sliding column drives the push rod to rise. The push rod rises to push the air release member inside the second fixing ring to rise. Since the air release members of the second fixing ring are all provided with air release grooves, when the air release member rises, it can be judged whether the air pressure in the pressure cooker has dropped to normal pressure by whether steam is discharged, so as to ensure that the pot lid can be safely opened and the air release member can quickly release pressure through the air release grooves when it rises, achieving the effect of shortening the waiting time for eating after cooking ends.

[0019] 2. Place the pot lid on the top of the pot body. Drive the sliding frame to rotate by rotating the pot lid handle. When the sliding frame rotates into the limiting groove provided in the pot body, the sliding frame moves along the inclined surface provided inside the limiting groove. At this time, the first spring is in a stretched state. When the air pressure inside the pot is relatively large, drive the lifting rod to slide inside the first fixing ring by the air pressure. At this time, when rotating the handle, since the lifting rod blocks the sliding groove provided in the first fixing ring, the sliding frame cannot slide into the first fixing ring, so that the pot lid and the pot body are in a locked state, preventing the user from forcibly opening the pot lid.

[0020] 3. Press the button to drive the second lifting frame upward. The upward movement of the second lifting frame drives the first lifting frame downward through the rotating plate, and then drives the limit post downward. At this time, the second spring is in a compressed state. When the handle of the pot lid rotates to the top of the handle of the pot body, release the button. The elastic potential energy released by the second spring drives the limit post to move upward and into the groove opened on the handle of the pot lid, realizing the manual locking of the pot lid and the pot body, and cooperating with the locking of the sliding frame to achieve the double-locking state of the pressure cooker. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic three-dimensional structure diagram of the present invention.

[0022] Figure 2 For the present invention Figure 1 Schematic enlarged view of the structure at A of the present invention.

[0023] Figure 3 It is a schematic structure diagram of the connection between the first fixing ring and the lifting rod of the present invention.

[0024] Figure 4 It is a schematic three-dimensional structure diagram of the second fixing ring and the air release member of the present invention.

[0025] Figure 5 It is a schematic structure diagram of the connection between the pot body and the fixing block of the present invention.

[0026] Figure 6 It is a schematic structure diagram of the connection between the sliding frame and the limit groove of the present invention.

[0027] Figure 7 It is a schematic structure diagram of the connection between the pot lid and the limit post of the present invention.

[0028] Figure 8 It is a schematic structure diagram of the connection between the fixing frame and the sliding frame of the present invention.

[0029] Figure 9 It is a schematic structure diagram of the connection between the sliding frame and the lifting rod of the present invention.

[0030] Figure 10 It is a schematic structure diagram of the connection between the lifting plate and the lifting column of the present invention.

[0031] Figure 11 It is an expanded view of the locking unit structure of the present invention.

[0032] Figure 12 It is a schematic structure diagram of the connection between the push rod and the air release member of the present invention.

[0033] In the figure: 1, pot body; 2, pot lid; 301, fixing frame; 302, first spring; 303, sliding frame; 304, first fixing ring; 305, lifting rod; 306, limiting groove; 4, fixing frame; 501, first lifting frame; 502, second spring; 503, second lifting frame; 504, rotating plate; 505, limiting post; 506, button; 6, fixing block; 701, lifting plate; 702, lifting column; 703, sliding column; 704, push rod; 705, second fixing ring; 706, air release part. Specific implementation mode

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figures 1 to 12 , the present invention provides a technical solution: a steam cooking pressure cooker, including a pot body 1 and a pot lid 2 that meshes with the pot body 1 to form a sealed space, and further includes a locking unit for fixing the pot lid 2 to the top of the pot body 1, an interlocking unit for cooperating with the locking unit to prevent the pot lid 2 from being forcibly opened, and a pressure relief unit for judging whether the air pressure in the pot has dropped to normal pressure;

[0036] A fixing frame 4 for placing the locking unit is provided between the pot body 1 and the pot lid 2. The fixing frame 4 penetrates through the handle of the pot body 1, and a fixing block 6 for placing the pressure relief unit is provided on the inner wall of the pot body 1.

[0037] In specific implementation, based on the fact that the pot body 1 and the pot lid 2 mesh to form a sealed space, the pot lid 2 is fixed to the top of the pot body 1 through the locking unit, and the interlocking unit cooperates with the locking unit to prevent the pot lid 2 from being forcibly opened when the internal air pressure of the pressure cooker has not dropped to normal pressure. The pressure relief unit is used to judge whether the air pressure in the pot has dropped to normal pressure. A fixing frame 4 is provided between the pot body 1 and the pot lid 2 to place the locking unit, and the fixing frame 4 penetrates through the handle of the pot body 1, and the fixing block 6 installs the pressure relief unit inside the pot body.

[0038] As a further implementation scheme of the present invention, the interlocking unit includes a fixing frame 301. The fixing frame 301 is fixed inside the pot lid 2. A sliding frame 303 is slidably connected to the outer wall of the fixing frame 301. A first fixing ring 304 is provided on one side of the sliding frame 303, and a lifting rod 305 is movably connected inside the first fixing ring 304.

[0039] In specific implementation, the fixing frame 301 fixed inside the pot lid 2 is the basic structure, and its outer wall is slidably connected to the sliding frame 303, enabling the sliding frame 303 to move within a certain range. The lifting rod 305 is movably connected inside the first fixing ring 304 provided on one side of the sliding frame 303. During the working process of the pressure cooker, when the air pressure inside the pot changes, the air pressure pushes the lifting rod 305 to move inside the first fixing ring 304. When the lifting rod 305 blocks the sliding groove inside the first fixing ring 304, the movement and reset of the sliding frame 303 are restricted, thereby realizing the locking of the pot lid 2 and the pot body 1, preventing the pot lid 2 from being forcibly opened when there is pressure inside the pot, and ensuring the use safety.

[0040] As a further implementation scheme of the present invention, a first spring 302 is provided between the fixing frame 301 and the sliding frame 303. One end of the first spring 302 is fixed to one side of the fixing frame 301, and the other end of the first spring 302 is fixed to one side of the sliding frame 303.

[0041] In specific implementation, when the sliding frame 303 slides, it will stretch the first spring 302 to cause elastic deformation and store elastic potential energy. When the locking condition of the sliding frame 303 is released, the first spring 302 releases the elastic potential energy, pushing the sliding frame 303 to slide on the outer wall of the fixing frame 301 and move it back to the initial position, thereby playing a key elastic assistance and reset role during the opening, closing, and locking processes of the pressure cooker.

[0042] As a further implementation scheme of the present invention, a sliding groove for the sliding of the sliding frame 303 is opened on one side of the first fixing ring 304, and a limiting groove 306 for the sliding frame 303 to lock the pot lid 2 is opened at the top end of the handle of the pot body 1.

[0043] In specific implementation, the sliding groove opened on one side of the first fixing ring 304 is adapted to the sliding frame 303, enabling the sliding frame 303 to slide therein. The limiting groove 306 at the top end of the handle of the pot 1 can cooperate with the sliding frame 303. When the pot lid 2 is rotated, the sliding frame 303 slides along the inner wall of the limiting groove 306 until the sliding frame 303 is completely fitted with the limiting groove 306, thereby realizing the locking of the pot lid 2, ensuring the stable connection between the pot lid 2 and the pot body 1 during cooking, and preventing accidental opening.

[0044] As a further implementation scheme of the present invention, the locking unit includes a first lifting frame 501. The first lifting frame 501 is slidably connected inside the fixed frame 4. A second lifting frame 503 is slidably connected to one side of the first lifting frame 501. A rotating plate 504 is provided between the first lifting frame 501 and the second lifting frame 503. A limiting column 505 is fixedly connected to the top end of the first lifting frame 501, and a groove cooperating with the limiting column 505 is opened at the bottom end of the handle of the pot lid 2. A button 506 is provided at the bottom end of the second lifting frame 503.

[0045] In a specific implementation, the fixed frame 4 is slidably connected to the first lifting frame 501 inside, and one side of the first lifting frame 501 is slidably connected to the second lifting frame 503. A rotating plate 504 is provided between the two, and the rotation of the rotating plate 504 is used to realize the connection between the movements of the two. When the button 506 is pressed, the second lifting frame 503 is driven to move up, and the first lifting frame 501 is moved down by the rotating plate 504, and the limiting column 505 is lowered accordingly. After releasing the button 506, the first lifting frame 501 moves up, and the limiting column 505 rises and embeds into the handle groove of the pot cover 2, thereby locking the pot cover 2 and the pot body 1. Pressing the button 506 again can make the limiting column 505 drop, releasing the lock on the pot cover 2, making it convenient to open the pot cover 2.

[0046] As a further embodiment of the present invention, a second spring 502 is provided between the first lifting frame 501 and the second lifting frame 503 , one end of the second spring 502 is fixed to the top of the inner wall of the first lifting frame 501 , and the other end of the second spring 502 is fixed to the top of the outer wall of the second lifting frame 503 .

[0047] In a specific implementation, when the button 506 is pressed, the second lifting frame 503 moves upward, compressing the second spring 502 to store elastic potential energy. After the button 506 is released, the second spring 502 releases the elastic potential energy and pushes the second lifting frame 503 to reset through its own elastic restoring force, while driving the first lifting frame 501 to move upward, causing the limit column 505 to rise and embed into the handle groove of the pot cover 2, thereby locking the pot cover 2 and the pot body 1. The second spring 502 plays a key role in providing elastic force and reset power during the locking and unlocking process.

[0048] As a further implementation scheme of the present invention, the rotating plate 504 is fixed inside the fixed frame 4 through a fixed shaft, the first lifting frame 501 is movably connected to the rotating plate 504 through the rotating shaft, and the rotating plate 504 is provided with a sliding groove for sliding with the connecting shaft, and the second lifting frame 503 is movably connected to the rotating plate 504 through the connecting shaft, and the rotating plate 504 is provided with a sliding groove for sliding with the rotating shaft.

[0049] When the button 506 at the bottom of the second lifting frame 503 is pressed to move the second lifting frame 503 upward, the connecting shaft slides in the corresponding sliding groove, driving the rotating plate 504 to rotate a certain angle around the fixed axis. The rotation of the rotating plate 504 causes the rotating shaft on the first lifting frame 501 to slide in the corresponding sliding groove, thereby driving the first lifting frame 501 to move downward. When the button 506 is released, under the action of the second spring 502, the second lifting frame 503 moves downward, the connecting shaft slides in the opposite direction, the rotating plate 504 rotates in the opposite direction, and the first lifting frame 501 moves upward, realizing the linkage between the first lifting frame 501 and the second lifting frame 503, thereby controlling the lifting and lowering of the top limit column 505, and completing the locking and unlocking of the pot cover 2.

[0050] As a further embodiment of the present invention, the air release unit includes a lifting plate 701. One side of the first lifting frame 501 is fixedly connected to the lifting plate 701. A lifting column 702 is provided at the bottom of the lifting plate 701. The bottom end of the lifting column 702 is slidably connected to a sliding column 703. One side of the sliding column 703 is slidably connected to a push rod 704. A second fixing ring 705 is provided at the top of the push rod 704. An air release member 706 is slidably connected inside the second fixing ring 705.

[0051] In specific implementation, the lifting plate 701 fixedly connected to one side of the first lifting frame 501 serves as the linkage core. When the first lifting frame 501 undergoes displacement, it drives the synchronous movement of the lifting plate 701. The lifting column 702 at the bottom of the lifting plate 701 moves accordingly. When the lifting column 702 moves downward, through the inclined surface structure slidably connected to the sliding column 703 at its bottom end, it pushes the sliding column 703 to move horizontally. The sliding column 703 then drives the push rod 704 connected to it to move upward by means of its own inclined surface. After the push rod 704 moves upward, it pushes the air release member 706 located inside the second fixing ring 705 to slide. When the air release member 706 moves to the top of the pot lid 2, through the air release grooves communicated between the second fixing ring 705 and the air release member 706, rapid pressure release inside the pressure cooker is achieved, thereby ensuring that the internal pressure of the pressure cooker can be safely reduced after cooking ends.

[0052] As a further embodiment of the present invention, inclined surfaces are provided on both sides of the sliding column 703. The bottom end of the lifting column 702 is provided with an inclined surface having the same inclination angle as the sliding column 703. The bottom end of the push rod 704 is provided with an inclined surface having the same inclination angle as the sliding column 703. And a sliding groove for cooperating with the movement of the lifting column 702, the sliding column 703, and the push rod 704 is provided inside the fixing block 6.

[0053] In specific implementation, since inclined surfaces are provided on both sides of the sliding column 703, and the bottom ends of the lifting column 702 and the push rod 704 are respectively provided with inclined surfaces having the same inclination angle as it, and at the same time, a sliding groove for allowing the lifting column 702, the sliding column 703, and the push rod 704 to move is provided inside the fixing block 6. When the lifting column 702 moves downward, the inclined surface at its bottom end interacts with the inclined surface of the sliding column 703, driving the sliding column 703 to move horizontally. When the sliding column 703 moves, it cooperates with the inclined surface at the bottom end of the push rod 704 through its inclined surface, pushing the push rod 704 to move upward, enabling the components to achieve linkage inside the sliding groove of the fixing block 6 by relying on the inclined surface structure.

[0054] As a further embodiment of the present invention, the second fixing ring 705 is fixed inside the pot lid 2. The second fixing ring 705 is equiangularly provided with air release grooves for air release. The air release member 706 is provided with a plurality of grooves having the same size as the air release holes of the second fixing ring 705.

[0055] In a specific implementation, when pressure relief operation is required for the pressure cooker, the push rod 704 is used to push the air release member 706 to move. Through the groove formed on the air release member 706 and aligned and communicated with the air release groove of the second fixing ring 705, the function of discharging the steam in the pressure cooker through the air release groove and the groove for pressure relief is realized.

[0056] Working principle: When using this steam cooking pressure cooker, the food to be cooked is placed inside the pot body 1, and then the pot lid 2 is placed on the top of the pot body 1. The pot lid 2 is rotated towards the handle position of the pot body 1 through the handle of the pot lid 2. The rotation of the pot lid 2 drives the sliding frame 303 movably connected inside it to move. When the sliding frame 303 moves into the limiting groove 306 formed on the handle of the pot body 1, the bottom end of the sliding frame 303 slides along the inner wall of the limiting groove 306, and an inclined surface is provided inside the limiting groove 306. When the sliding frame 303 slides along the inclined surface, the first spring 302 fixedly connected to one side of it is stretched, and then the sliding frame 303 moves out of the sliding groove formed inside the first fixing ring 304.

[0057] Meanwhile, when the pot lid 2 is rotated, the button 506 is pressed to a position flush with the bottom end of the handle of the pot body 1. The button 506 drives the second lifting frame 503 to move upward. The upward movement of the second lifting frame 503 drives the rotating plate 504 to rotate by a certain angle through the rotating shaft. The rotation of the rotating plate 504 drives the first lifting frame 501 to move downward through another rotating shaft (sliding grooves for cooperating with the rotating shaft to slide inside the rotating plate 504 are provided on both sides of the rotating plate 504), and then drives the limiting column 505 fixedly connected to the top end of the first lifting frame 501 to move downward. At this time, the second spring 502 between the first lifting frame 501 and the second lifting frame 503 is in a compressed state. After the sliding frame 303 slides in place along the limiting groove 306, the pot lid 2 and the pot body 1 form a sealed space. At this time, the button 506 is released, and the second spring 502 releases its elastic potential energy, thereby driving the limiting column 505 to move to its initial position before the downward movement of the first lifting frame 501. Since a groove of the same size as the limiting column 505 is formed at the bottom of the handle of the pot lid 2, the pot lid 2 and the pot body 1 are locked by the limiting column 505.

[0058] After the pot lid 2 is locked with the pot body 1, place the pressure cooker on the gas stove and heat the inside of the pressure cooker through gas. When the internal air pressure in the pot increases with heating, the lifting rod 305 is pushed upward in the first fixing ring 304 by the air pressure. The lifting rod 305 moves upward to block the sliding groove provided inside the first fixing ring 304. At this time, if the handle of the pot lid 2 is rotated to drive the sliding frame 303 to rotate, the sliding frame 303 cannot be driven by the elastic potential energy released by the first spring 302 to slide into the inside of the first fixing ring 304 to the initial position before the sliding frame 303 slides. Thus, the pot lid 2 and the pot body 1 are locked by the lifting rod 305. And if the pot lid 2 is unlocked by pressing the button 506 at this time to make the limit post 505 move downward, the pot lid 2 cannot be forced to open. The pressure cooker is doubly locked by the sliding frame 303 and the limit post 505.

[0059] After cooking is completed, if it is necessary to quickly open the pot lid 2, press the button 506 into the handle of the pot body 1. The button 506 drives the second lifting frame 503 to move upward. The upward movement of the second lifting frame 503 drives the rotating plate 504 to rotate a certain angle through the rotating shaft. The rotation of the rotating plate 504 drives the first lifting frame 501 to move downward through another rotating shaft. The downward movement of the first lifting frame 501 drives the lifting plate 701 fixedly connected thereto to move downward. The downward movement of the lifting plate 701 drives the lifting column 702 at its bottom to move downward. The downward movement of the lifting column 702 drives the sliding column 703 to move horizontally through the inclined surface provided at its bottom end, and drives the push rod 704 to move upward through the inclined surface provided on the sliding column 703 (when the button is pressed to be flush with the bottom end of the handle of the pot body 1, the push rod 704 rises to the bottom of the second fixing ring 705. At this time, the push rod 704 does not move into the second fixing ring 705, which does not affect the rotation of the pot lid 2). The push rod 704 moves upward to push the air release member 706 inside the second fixing ring 705. When the air release member 706 moves to the top of the pot lid 2, the high-pressure inside the pressure cooker is quickly depressurized through the air release grooves provided on the second fixing ring 705 and the air release member 706. And the air release member 706 is not provided with an air release groove on one side of the handle of the pot lid 2 to prevent the user from being scalded by steam (after the button 506 is released, the lifting plate 701 moves upward under the pulling force of the second spring 502. At this time, the push rod 704 will move into the fixing block 6 under the action of its own gravity, and drives the sliding column 703 to move horizontally through the inclined surface provided thereon, and then drives the sliding column 703 to move upward to its initial position).

[0060] After the pressure is released, the lifting rod 305 moves downward to restore its initial position. At this time, rotating the handle of the pot lid 2 can drive the sliding frame 303 to move into the inside of the first fixing ring 304 under the drive of the elastic potential energy released by the first spring 302. By unlocking the sliding frame 303 and the limiting member 506, the pot lid 2 can be safely opened. And whether the air release member 706 rises to release steam can be used to judge whether the internal air pressure of the pressure cooker is at normal pressure, which is convenient for those with lack of experience to use.

[0061] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A steam cooking pressure cooker, comprising a pot body (1) and a pot lid (2) that engages with the pot body (1) to form a sealed space, characterized in that: It also includes a locking unit for fixing the pot lid (2) to the top of the pot body (1), an interlocking unit for cooperating with the locking unit to prevent the pot lid (2) from being forcibly opened, and a pressure relief unit for judging whether the air pressure inside the pot has dropped to normal pressure; A fixing frame (4) for placing the locking unit is arranged between the pot body (1) and the pot lid (2). The fixing frame (4) penetrates through the handle of the pot body (1), and a fixing block (6) for placing the air release unit is arranged on the inner wall of the pot body (1).

2. The steam cooking pressure cooker according to claim 1, wherein: The interlocking unit includes a fixing frame (301) fixed inside the pot lid (2). A sliding frame (303) is slidably connected to the outer wall of the fixing frame (301). A first fixing ring (304) is arranged on one side of the sliding frame (303), and a lifting rod (305) is movably connected inside the first fixing ring (304).

3. The steam cooking pressure cooker according to claim 2, wherein: A first spring (302) is arranged between the fixing frame (301) and the sliding frame (303). One end of the first spring (302) is fixed to one side of the fixing frame (301), and the other end of the first spring (302) is fixed to one side of the sliding frame (303).

4. The steam cooking pressure cooker according to claim 2, characterized in that: A sliding groove for cooperating with the sliding of the sliding frame (303) is opened on one side of the first fixing ring (304), and a limiting groove (306) for locking the pot lid (2) by cooperating with the sliding frame (303) is opened at the top end of the handle of the pot body (1).

5. The steam cooking pressure cooker according to claim 1, characterized in that: The locking unit includes a first lifting frame (501). The first lifting frame (501) is slidably connected inside the fixing frame (4). A second lifting frame (503) is slidably connected to one side of the first lifting frame (501). A rotating plate (504) is arranged between the first lifting frame (501) and the second lifting frame (503). A limiting column (505) is fixedly connected to the top end of the first lifting frame (501), and a groove cooperating with the limiting column (505) is opened at the bottom end of the handle of the pot lid (2). A button (506) is arranged at the bottom end of the second lifting frame (503).

6. The steam cooking pressure cooker according to claim 5, characterized in that: A second spring (502) is arranged between the first lifting frame (501) and the second lifting frame (503). One end of the second spring (502) is fixed to the top end of the inner wall of the first lifting frame (501), and the other end of the second spring (502) is fixed to the top end of the outer wall of the second lifting frame (503).

7. The steam cooking pressure cooker according to claim 5, wherein: The rotating plate (504) is fixed inside the fixing frame (4) through a fixing shaft. The first lifting frame (501) is movably connected to the rotating plate (504) through a rotating shaft, and a sliding groove for cooperating with the sliding of the connecting shaft is opened on the rotating plate (504). The second lifting frame (503) is movably connected to the rotating plate (504) through a connecting shaft, and a sliding groove for cooperating with the sliding of the rotating shaft is opened on the rotating plate (504).

8. A steam cooking pressure cooker according to claim 5, characterized in that: The air release unit includes a lifting plate (701). One side of the first lifting frame (501) is fixedly connected to the lifting plate (701). A lifting column (702) is provided at the bottom of the lifting plate (701). The bottom end of the lifting column (702) is slidably connected to a sliding column (703). One side of the sliding column (703) is slidably connected to a push rod (704). A second fixing ring (705) is provided at the top of the push rod (704). An air release member (706) is slidably connected inside the second fixing ring (705).

9. The steam cooking pressure cooker according to claim 8, wherein: Both sides of the sliding column (703) are provided with inclined surfaces. The bottom end of the lifting column (702) is provided with an inclined surface having the same inclination angle as the sliding column (703). The bottom end of the push rod (704) is provided with an inclined surface having the same inclination angle as the sliding column (703). And a chute for cooperating with the movement of the lifting column (702), the sliding column (703) and the push rod (704) is provided inside the fixing block (6).

10. A steam cooking pressure cooker according to claim 8, wherein: The second fixing ring (705) is fixed inside the pot lid (2). The second fixing ring (705) is equiangularly provided with air release grooves for air release. The air release member (706) is provided with a plurality of grooves having the same size as the air release holes of the second fixing ring (705).

Images