A steam cooking pressure cooker

Abstract

The application discloses a steam cooking pressure cooker and relates to the technical field of pressure cookers. The pressure cooker comprises a cooker body, a cooker cover which is engaged with the cooker body to form a sealed space, a locking unit for fixing the cooker cover on the top of the cooker body, an interlocking unit for preventing the cooker cover from being forcibly opened in cooperation with the locking unit, and a pressure relief unit for judging whether the air pressure in the cooker is reduced to normal pressure. The first lifting frame drives the lifting plate to move downward, and then drives the lifting column to move downward. The lifting column and the sliding column are driven to move in the horizontal direction. The sliding column and the push rod are driven to move upward. The push rod drives the air relief member in the second fixed ring to move upward. Since the air relief member of the second fixed ring is provided with an air relief groove, whether the air pressure in the high-pressure cooker is reduced to normal pressure can be judged by whether steam is discharged when the air relief member moves upward. Therefore, the cooker cover can be safely opened, the air relief member can be quickly relieved through the air relief groove when the air relief member moves upward, and the effect of shortening the waiting time for eating after cooking is finished is achieved.

Description

Technical Field

[0001] This invention relates to the field of pressure cooker technology, specifically to a steam cooking pressure cooker. Background Technology

[0002] A pressure cooker, also known as a pressure cooker, is a kitchen appliance that accelerates cooking by increasing internal pressure in a sealed environment. Its core principle is to use high pressure to raise the boiling point of water, rapidly breaking down food fibers at high temperatures and significantly shortening cooking time. When the pot is heated by an open flame, the internal water evaporates to produce steam. However, because the lid and pot body form a completely sealed space through a precisely designed interlocking tooth structure and an elastic sealing ring, the steam cannot escape, causing the internal pressure to rise continuously. This pressure increase significantly alters the physical properties of water—when the working pressure reaches 80-100 kPa (1.5-2 times the normal atmospheric pressure), the boiling point of water rises 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 crucial for its safe and efficient operation. When the pressure inside the pot exceeds the preset threshold (usually 80 kPa), the steam pushes up the counterweight of the pressure relief valve, maintaining dynamic balance through periodic venting. When using the pressure cooker, align the lid with the top of the pot and rotate the handle to the locked position. At this time, the locking mechanism of the pressure cooker is activated. During heating, the pressure gradually rises to the working pressure. The energy of the compressed steam accumulated during this process is equivalent to a small pressure vessel. After cooking, it needs to be left to cool naturally for 15-30 minutes until the pressure drops completely to atmospheric pressure before the lid can be opened. However, there are many safety hazards in actual use: inexperienced users often cannot accurately judge the pressure release time and may try to force open the lid before the pressure is fully released. In emergencies, some users may manually pull out the pressure relief valve for rapid venting. The high-speed steam ejected from the pot can reach a temperature of over 120°C, which can cause instantaneous third-degree burns upon contact with the skin. Sudden pressure release may also cause boiling liquid inside the pot to splash with steam. Such improper operation may damage the precision structure of the pressure relief valve and affect the safety of subsequent use.

[0004] To address the aforementioned issues, there is an urgent need for innovative design based on the existing steam cooking pressure cooker. Summary of the Invention

[0005] This invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different approach. Specifically, the invention aims to provide a steam pressure cooker that addresses the numerous safety hazards present in practical use, as mentioned in the background: inexperienced users often fail to accurately judge the pressure release time and may attempt to force open the lid before the pressure is fully released; in emergencies, some users may manually pull out the pressure release valve for rapid venting, resulting in high-speed steam temperatures exceeding 120°C, which can cause instantaneous third-degree burns upon skin contact; and sudden pressure release may cause boiling liquid to splash along with steam.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a steam cooking pressure cooker, comprising a pot body and a pot lid that engages with the pot body to form a sealed space, 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 determining whether the pressure inside the pot has dropped to normal pressure.

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

[0008] Preferably, the interlocking unit includes a fixed frame, which is fixed inside the pot lid. A sliding frame is slidably connected to the outer wall of the fixed 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 fixed frame and the sliding frame, with one end of the first spring fixed to one side of the fixed frame and the other end of the first spring fixed to one side of the sliding frame.

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

[0011] Preferably, the locking unit includes a first lifting frame, the first lifting frame is slidably connected inside the fixed 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 limit post is fixedly connected to the top of the first lifting frame, and a groove that cooperates with the limit post is opened at the bottom of the handle of the pot lid. A button is provided at the bottom of the second lifting frame.

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

[0013] Preferably, the rotating plate is fixed inside the fixed frame by a fixed shaft, the first lifting frame is movably connected to the rotating plate by a rotating shaft, and the rotating plate has a sliding groove that cooperates with the connecting shaft to slide, the second lifting frame is movably connected to the rotating plate by a connecting shaft, and the rotating plate has a sliding groove that cooperates with the rotating shaft to slide.

[0014] Preferably, the venting unit includes a lifting plate, a lifting plate is fixedly connected to one side of the first lifting frame, a lifting column is provided at the bottom of the lifting plate, a sliding column is slidably connected to the bottom end of the lifting column, a push rod is slidably connected to one side of the sliding column, a second fixing ring is provided at the top of the push rod, and a venting component is slidably connected inside the second fixing ring.

[0015] Preferably, the sliding column has inclined surfaces on both sides, the bottom end of the lifting column has an inclined surface with the same inclination angle as the sliding column, the bottom end of the push rod has an inclined surface with the same inclination angle as the sliding column, and the fixed block has a groove inside that cooperates with the movement of the lifting column, the sliding column and the push rod.

[0016] Preferably, the second fixing ring is fixed inside the pot lid, and the second fixing ring has venting grooves at equal angles for venting. The venting component has multiple grooves of the same size as the venting holes of the second fixing ring.

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

[0018] 1. The first lifting frame moves the lifting plate downward, which in turn moves the lifting column downward. The inclined surfaces of the lifting column and the sliding column cause the lifting column to move horizontally. The inclined surfaces of the sliding column and the push rod cause the sliding column to move and drive the push rod upward. The push rod pushes the venting component inside the second fixed ring to rise. Since the venting component of the second fixed ring is equipped with a venting groove, when the venting component rises, the pressure inside the pressure cooker can be judged by whether steam is released, thus ensuring that the lid can be opened safely. The venting component can also quickly release pressure through the venting groove when it rises, thereby shortening the waiting time for food after cooking.

[0019] 2. Place the lid on top of the pot body. Rotate the lid handle to rotate the sliding frame. When the sliding frame rotates into the limiting groove in the pot body, it moves along the inclined surface inside the limiting groove. At this time, the first spring is in a stretched state. When the air pressure inside the pot is high, the air pressure drives the lifting rod to slide inside the first fixed ring. When the handle is turned, the lifting rod blocks the sliding groove in the first fixed ring, preventing the sliding frame from sliding into the first fixed ring. This locks the lid and the pot body, preventing the user from forcibly opening the lid.

[0020] 3. Pressing the button moves the second lifting frame upward, which in turn moves the first lifting frame downward via the rotating plate, thereby moving the limiting post downward. At this time, the second spring is in a compressed state. When the handle of the lid is rotated to the top of the handle of the pot body, the button is released. The elastic potential energy released by the second spring moves the limiting post upward into the groove opened in the handle of the lid, realizing the manual locking of the lid and the pot body. In conjunction with the locking of the sliding bracket, the pressure cooker is double locked. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

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

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

[0024] Figure 4 This is a three-dimensional structural diagram of the second fixing ring and the venting component of the present invention.

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

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

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

[0028] Figure 8 This is a schematic diagram showing the connection between the fixed frame and the sliding frame of the present invention.

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

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

[0031] Figure 11 This is an unfolded diagram of the locking unit structure of the present invention.

[0032] Figure 12 This is a schematic diagram showing the connection between the push rod and the venting component of the present invention.

[0033] In the diagram: 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 post; 703. Sliding post; 704. Push rod; 705. Second fixing ring; 706. Venting component. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see 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 engages with the pot body 1 to form a sealed space, and 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 determining whether the pressure inside the pot has dropped to normal pressure.

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

[0037] In specific implementation, based on the sealed space formed by the engagement of the pot body 1 and the pot lid 2, the pot lid 2 is fixed to the top of the pot body 1 by the locking unit, and the interlocking unit cooperates with the locking unit to prevent the pot lid 2 from being forcibly opened when the gas pressure inside the pressure cooker has not dropped to normal pressure. The pressure relief unit determines whether the gas pressure inside 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 passes through the handle of the pot body 1. The fixing block 6 installs the pressure relief unit inside the pot body.

[0038] As a further embodiment of the present invention, the interlocking unit includes a fixing frame 301, which 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 fixed frame 301 fixed inside the pot lid 2 is the basic structure, and its outer wall is slidably connected to the sliding frame 303, so that the sliding frame 303 can move within a certain range. The first fixed ring 304 set on one side of the sliding frame 303 is movably connected to the lifting rod 305. During the operation of the pressure cooker, when the gas pressure inside the pot changes, the gas pressure pushes the lifting rod 305 to move within the first fixed ring 304. When the lifting rod 305 blocks the sliding groove inside the first fixed ring 304, it restricts the movement and resets the sliding frame 303, thereby locking 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 safe use.

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

[0041] In practice, when the sliding frame 303 slides, it stretches the first spring 302 to produce elastic deformation and store elastic potential energy. When the locking condition of the sliding frame 303 is released, the first spring 302 releases elastic potential energy and pushes the sliding frame 303 to slide on the outer wall of the fixed frame 301, so that it moves back to the initial position and resets. Thus, it plays a key role in elastic assistance and reset during the opening, closing and locking of the pressure cooker.

[0042] As a further embodiment of the present invention, a sliding groove is provided on one side of the first fixing ring 304 to cooperate with the sliding frame 303 to slide, and a limiting groove 306 is provided at the top of the handle of the pot body 1 to cooperate with the sliding frame 303 to lock the pot lid 2.

[0043] In specific implementation, the sliding groove on one side of the first fixing ring 304 is adapted to the sliding frame 303, allowing the sliding frame 303 to slide within it. The limiting groove 306 at the top 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 and the limiting groove 306 are fully engaged, thereby locking the pot lid 2 and ensuring that the pot lid 2 and the pot body 1 are firmly connected during cooking, preventing accidental opening.

[0044] As a further embodiment 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, and a rotating plate 504 is provided between the first lifting frame 501 and the second lifting frame 503. A limit post 505 is fixedly connected to the top of the first lifting frame 501, and a groove that cooperates with the limit post 505 is opened at the bottom of the handle of the pot lid 2. A button 506 is provided at the bottom of the second lifting frame 503.

[0045] In specific implementation, the first lifting frame 501 is slidably connected inside the fixed frame 4, and the second lifting frame 503 is slidably connected to one side of the first lifting frame 501. A rotating plate 504 is provided between the two, and the movement of the two is related through the rotating plate 504. When the button 506 is pressed, the second lifting frame 503 is moved upward, and the first lifting frame 501 is moved downward through the rotating plate 504. The limiting post 505 is lowered accordingly. After the button 506 is released, the first lifting frame 501 moves upward, and the limiting post 505 rises and embeds into the handle groove of the pot lid 2, thereby locking the pot lid 2 and the pot body 1. Pressing the button 506 again will cause the limiting post 505 to fall, releasing the lock on the pot lid 2 and making it easy to open the pot lid 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 practice, when button 506 is pressed, the second lifting frame 503 moves upward, compressing the second spring 502 to store elastic potential energy. After button 506 is released, the second spring 502 releases its elastic potential energy and, through its own elastic restoring force, pushes the second lifting frame 503 to reset. At the same time, it drives the first lifting frame 501 to move upward, causing the limiting post 505 to rise and embed into the handle groove of the pot lid 2, thereby locking the pot lid 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 embodiment of the present invention, the rotating plate 504 is fixed inside the fixed frame 4 by a fixed shaft, the first lifting frame 501 is movably connected to the rotating plate 504 by a rotating shaft, and the rotating plate 504 is provided with a sliding groove that cooperates with the connecting shaft to slide, and the second lifting frame 503 is movably connected to the rotating plate 504 by a connecting shaft, and the rotating plate 504 is provided with a sliding groove that cooperates with the rotating shaft to slide.

[0049] In practice, 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 slide groove, causing the rotating plate 504 to rotate around the fixed shaft at a certain angle. The rotation of the rotating plate 504 causes the rotating shaft on the first lifting frame 501 to slide in the corresponding slide groove, thereby causing 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 post 505 and completing the locking and unlocking of the pot lid 2.

[0050] As a further embodiment of the present invention, the venting unit includes a lifting plate 701. The lifting plate 701 is fixedly connected to one side of the first lifting frame 501. A lifting column 702 is provided at the bottom of the lifting plate 701. A sliding column 703 is slidably connected to the bottom end of the lifting column 702. A push rod 704 is slidably connected to one side of the sliding column 703. A second fixing ring 705 is provided at the top of the push rod 704. A venting component 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 is displaced, it drives the lifting plate 701 to move synchronously. The lifting column 702 at the bottom of the lifting plate 701 moves accordingly. When the lifting column 702 moves down, it pushes the sliding column 703 to move horizontally through the inclined structure that is slidably connected to the sliding column 703 at its bottom end. The sliding column 703 then drives the push rod 704 that is slidably connected to it to move up by its own inclined surface. After the push rod 704 moves up, it pushes the venting component 706 located inside the second fixed ring 705 to slide. When the venting component 706 moves to the top of the lid 2, it achieves rapid pressure relief in the pressure cooker through the venting groove that is connected to the second fixed ring 705 and the venting component 706, thereby ensuring that the pressure cooker can safely reduce the internal pressure after cooking.

[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 with the same inclination angle as the sliding column 703, the bottom end of the push rod 704 is provided with an inclined surface with the same inclination angle as the sliding column 703, and a sliding groove is provided inside the fixing block 6 to cooperate with the movement of the lifting column 702, the sliding column 703 and the push rod 704.

[0053] In specific implementation, since both sides of the sliding column 703 are provided with inclined surfaces, and the bottom ends of the lifting column 702 and the push rod 704 are respectively provided with inclined surfaces of the same inclination angle, and the fixed block 6 is provided with a sliding groove that allows the lifting column 702, the sliding column 703 and the push rod 704 to move, when the lifting column 702 moves down, its bottom inclined surface interacts with the inclined surface of the sliding column 703, causing the sliding column 703 to move horizontally. When the sliding column 703 moves, it also cooperates with the bottom inclined surface of the push rod 704 through its inclined surface, pushing the push rod 704 to move upward, so that each component can achieve linkage in the sliding groove of the fixed block 6 by means of 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, and the second fixing ring 705 is provided with venting grooves at equal angles for venting. The venting component 706 is provided with a plurality of grooves of the same size as the venting holes of the second fixing ring 705.

[0055] In practice, when it is necessary to depressurize the pressure cooker, the push rod 704 pushes the venting component 706 to move. The venting component 706 has a groove that is aligned and connected with the venting groove of the second fixed ring 705, so that the steam in the pressure cooker can be discharged through the venting groove and the groove to depressurize.

[0056] Working principle: When using this steam pressure cooker, place the food to be cooked into the pot body 1, and then place the lid 2 on top of the pot body 1. Rotate the lid 2 towards the handle of the pot body 1 using the handle of the lid 2. The rotation of the lid 2 will cause the sliding frame 303 connected inside to move. When the sliding frame 303 moves into the limiting groove 306 opened in 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. The limiting groove 306 is provided with an inclined surface. When the sliding frame 303 slides along the inclined surface, it causes the first spring 302 fixedly connected on one side to be stretched, thereby causing the sliding frame 303 to move out of the sliding groove opened inside the first fixing ring 304.

[0057] At the same time, when the lid 2 is rotated, the button 506 is pressed until it is flush with the bottom of the handle of the pot body 1. The button 506 causes the second lifting frame 503 to move upward. The upward movement of the second lifting frame 503 causes the rotating plate 504 to rotate at a certain angle via the rotating shaft. The rotation of the rotating plate 504 causes the first lifting frame 501 to move downward via another rotating shaft (both sides of the rotating plate 504 have grooves that cooperate with the rotating shaft to slide inside the rotating plate 504). This, in turn, causes the limiting post 505 fixedly connected to the top of the first lifting frame 501 to move downward. At this time, the first... The second spring 502 between the lifting frame 501 and the second lifting frame 503 is in a compressed state. When the sliding frame 303 slides into place along the limiting groove 306, the pot lid 2 and the pot body 1 form a sealed space. At this time, when the button 506 is released, the second spring 502 releases its elastic potential energy, thereby driving the limiting post 505 to move to its initial position before the first lifting frame 501 moves down. Since the bottom of the handle of the pot lid 2 has a groove of the same size as the limiting post 505, the pot lid 2 and the pot body 1 are locked by the limiting post 505.

[0058] After the lid 2 is locked to the pot body 1, the pressure cooker is placed on the gas stove and heated by gas. As the internal pressure increases with heating, the pressure pushes the lifting rod 305 upward within the first fixed ring 304. The lifting rod 305 blocks the sliding groove inside the first fixed ring 304. At this time, if the handle of the lid 2 is turned to rotate the sliding frame 303, the sliding frame 303 cannot be moved into the first fixed ring 304 to its initial position before sliding by the elastic potential energy released by the first spring 302. Thus, the lifting rod 305 locks the lid 2 and the pot body 1. Furthermore, if the button 506 is pressed to move the limiting post 505 downward to release the lock on the lid 2, the lid 2 cannot be forcibly opened. The sliding frame 303 and the limiting post 505 form a double lock on the pressure cooker.

[0059] When cooking is finished, if it is necessary to quickly open the pot lid 2, press button 506 inside the handle of the pot body 1. Button 506 moves the second lifting frame 503 upward. The upward movement of the second lifting frame 503 drives the rotating plate 504 to rotate at a certain angle via a rotating shaft. The rotation of the rotating plate 504 drives the first lifting frame 501 downward via another rotating shaft. The downward movement of the first lifting frame 501 drives the lifting plate 701 fixedly connected to it 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 via the inclined surface at its bottom end, and also drives the push rod 704 upward via the inclined surface at 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 second fixing ring 705.) At the bottom, the push rod 704 has not moved into the second fixed ring 705 and does not affect the rotation of the lid 2. The push rod 704 moves up to push the venting part 706 inside the second fixed ring 705. When the venting part 706 moves to the top of the lid 2, the pressure inside the pressure cooker is quickly depressurized through the venting groove opened by the second fixed ring 705 and the venting part 706. The venting part 706 is located on the side of the handle of the lid 2 and does not have a venting groove to prevent steam from burning the user. (When the button 506 is released, the lifting plate 701 moves up under the pull of the second spring 502. At this time, the push rod 704 will move into the fixed block 6 under its own weight and push the sliding column 703 to move horizontally through its inclined surface, thereby pushing the sliding column 703 to move up to its initial position.)

[0060] After the pressure is released, the lifting rod 305 moves down to return to its initial position. At this time, turning the handle of the pot lid 2 can drive the sliding frame 303 to move into the first fixed ring 304 under the elastic potential energy released by the first spring 302. By releasing the lock on the sliding frame 303 and the limiting member 506, the pot lid 2 can be opened safely. And by whether steam is released when the venting member 706 rises, it can be determined whether the pressure inside the pressure cooker is at normal pressure, which is convenient for those who lack experience.

[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 make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should 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 cover (2) engaging with the pot body (1) to form a sealed space, characterized in that: Also include a locking unit to fix the pot cover (2) on the top of the pot body (1), an interlocking unit to prevent the pot cover (2) from being forcibly opened in cooperation with the locking unit, and a deflation unit to determine whether the air pressure in the pot is reduced to normal pressure; The pot body (1) and the pot cover (2) are provided with a fixed frame (4) for placing the locking unit, the fixed frame (4) penetrates the handle of the pot body (1), and the inner wall of the pot body (1) is provided with a fixed block (6) for placing the deflation unit; The locking unit comprises a first lifting frame (501), the inside of the fixed frame (4) is slidably connected with the first lifting frame (501), one side of the first lifting frame (501) is slidably connected with a second lifting frame (503), and a rotating plate (504) is arranged between the first lifting frame (501) and the second lifting frame (503), a limit column (505) is fixedly connected to the top end of the first lifting frame (501), and a recess is formed in the bottom end of the handle of the pot cover (2) and matched with the limit column (505), and a button (506) is arranged at the bottom end of the second lifting frame (503); The deflation unit comprises a lifting plate (701), one side of the first lifting frame (501) is fixedly connected with the lifting plate (701), the bottom of the lifting plate (701) is provided with a lifting column (702), the bottom end of the lifting column (702) is slidably connected with a sliding column (703), one side of the sliding column (703) is slidably connected with a push rod (704), the top of the push rod (704) is provided with a second fixed ring (705), and the inside of the second fixed ring (705) is slidably connected with a deflation member (706).

2. A steam pressure cooker according to claim 1, characterized in that: The interlocking unit comprises a fixed frame (301), the fixed frame (301) is fixed inside the pot cover (2), the outer wall of the fixed frame (301) is slidably connected with a sliding frame (303), one side of the sliding frame (303) is provided with a first fixed ring (304), and the inside of the first fixed ring (304) is movably connected with a lifting rod (305).

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

4. A steam pressure cooker according to claim 2, characterized in that: A sliding groove is formed in one side of the first fixed ring (304) and matched with the sliding of the sliding frame (303), and a limit groove (306) is formed in the top end of the handle of the pot body (1) and matched with the locking of the pot cover (2) by the sliding frame (303).

5. A pressure cooker for steam cooking according to claim 1, 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).

6. A steam pressure cooker according to claim 1, characterized in that: The rotating plate (504) is fixed in the fixed frame (4) through a fixed shaft, the first lifting frame (501) is movably connected with the rotating plate (504) through a rotating shaft, and the rotating plate (504) is provided with a sliding groove matched with the sliding of the connecting shaft; the second lifting frame (503) is movably connected with the rotating plate (504) through a connecting shaft, and the rotating plate (504) is provided with a sliding groove matched with the sliding of the rotating shaft.

7. A pressure cooker for steam cooking according to claim 1, characterized in that: The sliding column (703) is provided with inclined surfaces on both sides, the lifting column (702) is provided with an inclined surface at the bottom with the same inclination angle as the sliding column (703), the push rod (704) is provided with an inclined surface at the bottom with the same inclination angle as the sliding column (703), and the fixed block (6) is internally provided with sliding grooves matched with the movement of the lifting column (702), the sliding column (703) and the push rod (704).

8. A pressure cooker for steam cooking according to claim 1, characterized in that: The second fixed ring (705) is fixed in the pot cover (2), the second fixed ring (705) is provided with air release grooves at equal angles for air release, and the air release element (706) is provided with a plurality of grooves with the same size as the air release holes of the second fixed ring (705).

Images