A pressure cooker

Abstract

A pressure cooker comprises a cover and an upper cover which are assembled into a pot cover, an assembly gap between the cover and the upper cover forms an installation space, the upper cover is provided with an exhaust port, a float valve matching the pressure cooker is provided in the exhaust port, a float valve pressure limiting rod and a guide block for triggering the movement of the float valve pressure limiting rod are provided in the installation space, the guide block and the float valve pressure limiting rod are respectively movably arranged in the installation space, one end of the float valve pressure limiting rod is located at one side of the exhaust port, the cover or the upper cover is provided with a button, and the button and the guide block are matched and connected. The invention drives the guide block to move upward by pressing the button, the guide block drives the float valve pressure limiting rod to move toward the exhaust port, and the float valve pressure limiting rod partially blocks the exhaust port to limit the float valve from floating toward the exhaust port; when the pressure in the pressure cooker is high, the float valve floats toward the exhaust port, blocking the float valve pressure limiting rod from moving toward the exhaust port, and the button cannot be pressed, thereby solving the problem that the cover cannot be opened at will when there is air pressure in the pot, and has the characteristics of safety and reliability.

Description

Technical Field

[0001] The invention relates to a cooking appliance, in particular to a pressure cooker. Background Art

[0002] Before the electric pressure cooker is pressurized, the gas in the pot needs to be discharged first, and the discharge of the gas in the pot is mainly achieved through the float valve. At present, the float valve used in the electric pressure cooker has an exhaust channel, and a silicone sealing ring is installed at the bottom of the float valve. When the pressure in the pot is less than 4KPa, the pressure is not enough to lift the float valve. At this time, the gas in the pot is discharged through the float valve. When the pressure in the pot is greater than 4KPa, the pressure in the pot overcomes the gravity of the float valve to lift the float valve to achieve sealing. At the same time, after the float valve is lifted, it will pass through a hole or groove on the inner cover, so that the lid cannot rotate, and the lid cannot be opened in the pressure mode.

[0003] Food cooked under high pressure is loved by people for its unique taste. There are many types of pressure cookers on the market now, and their performance and safety protection are uneven, and they are not conducive to personal safety. When using them, most people have a weak sense of safety protection. When the food is just cooked and there is still air pressure inside the pot, when the user opens the lid, it will be forced to open the lid. Due to the air pressure inside the pot, the gas will bounce off the lid, causing the flying lid phenomenon. At this time, the human body is still close to the pressure cooker. If it cannot be avoided in time, the lid will bounce up and may hit the user; and if the lid is not closed properly or misplaced, the lid will not be fastened enough to withstand the internal pressure, causing the flying lid phenomenon.

[0004] At present, the mandatory requirement of safety certification is that the lid should not be opened under the action of 100N force; but in reality, many people often force it open after cooking in order to enjoy it as soon as possible; especially Europeans and Americans, whose body shape and strength can easily open the lid under the force of 100N, causing it to fly off; currently, the most common phenomenon of flying lid when using electric pressure cookers in life is caused by forced opening of the lid and misaligned closing of the lid. Summary of the invention

[0005] The purpose of the present invention is to provide a pressure cooker with reasonable structure, safety and reliability, and a tightly fastened lid, which effectively solves the disadvantages of the existing electric pressure cooker that the lid can be forced to open and the lid can be misplaced, effectively protects the life and property of users, and overcomes the shortcomings of the prior art.

[0006] A pressure cooker designed for this purpose comprises a surface cover and an upper cover which are assembled into a pot cover, an assembly gap between the surface cover and the upper cover forms an installation space, the upper cover is provided with an exhaust port, a float valve is provided in the exhaust port, a float valve pressure limiting rod which moves back and forth is provided in the installation space, and a guide block which triggers the movement of the float valve pressure limiting rod is provided, the guide block is arranged in the installation space for up and down movement, one end of the float valve pressure limiting rod is located at one side of the exhaust port, the surface cover or the upper cover is provided with a button, the button and the guide block are cooperatively connected, the button is pressed and the guide block is driven to move upward, the guide block drives the float valve pressure limiting rod to move toward the exhaust port, and the float valve pressure limiting rod partially blocks the exhaust port to limit the float valve from floating toward the exhaust port, the float valve does not block the exhaust port, the gas in the pot is discharged from the exhaust port, the air pressure in the pot is gradually reduced, and the pot cover is opened when the pressure cooker is depressurized; the pressure in the pot of the pressure cooker is large, the float valve floats toward the exhaust port, the float valve pressure limiting rod is blocked from moving toward the exhaust port, and the button cannot be pressed. When the pressure inside the pressure cooker is too high, the button cannot be pressed.

[0007] In the direction of rotating to open the cover, a middle ring protrusion is provided in the pressure cooker and is engaged with the guide stopper. Pressing a button drives the guide stopper to move and releases the engagement between the guide stopper and the middle ring protrusion to open the cover.

[0008] A middle ring protrusion is provided below the guide block in the pressure cooker, the guide block includes a blocking portion, and the middle ring protrusion is provided with a groove; the pressure cooker also includes an outer pot assembled with a pot cover, the pot cover rotates clockwise or counterclockwise toward the outer pot to open or close the lid; in the closed lid state, the blocking portion and the groove are buckled, and the buckling is in the direction of rotating to open the lid; a rotation limit assembly is provided between the pot cover and the outer pot, and the limit movement contact surface of the rotation limit assembly is in the direction of rotating to close the lid. When it is necessary to open the lid, press a button, the button drives the blocking portion of the guide block to move upward, and the blocking portion can be separated from the groove of the middle ring protrusion upward, and only by pressing the button can the pressure cooker be in the exhaust action, and the lid can be opened after the pressure cooker is exhausted. When there is still air pressure in the pressure cooker, the user cannot force or arbitrarily open the lid, and the user must press the button before rotating to open the lid.

[0009] A first spring is arranged in the blocking part, a rotating lever is arranged in the installation space, a latch is arranged on the lever, the bottom of the key contacts one end of the lever, and the other end of the lever is inserted into the blocking part; the key drives the blocking part of the guide block to move upward through the lever, the blocking part moves upward and disengages from the groove, and the first spring is compressed upward in the blocking part. When the cover needs to be opened, the key is pressed, the bottom of the key contacts the lever, the lever rotates upward and tilts up, and the latch is used as a support point for the upward rotation and tilting, and the lever rotates upward and tilts up to drive the guide block to move upward.

[0010] A buckle plate is provided in the installation space, a driving block is provided in the buckle plate, a buckle is provided at the front end of the buckle plate, a second spring is provided at the rear end of the buckle plate, a slot is provided on the blocking part, and a pushing part is provided on the middle ring protrusion; in the closed state, the buckle contacts the outer surface of the blocking part, the slot is below the buckle, and the driving block is located above the pushing part; in the open state, the blocking part moves upward with the guide block, the slot and the buckle are gradually aligned, and under the elastic action of the second spring, the buckle and the slot are engaged to limit the freedom of the guide block to move upward and fix the position of the guide block to move upward; in the closed state, the driving block and the pushing part contact in the direction of the pot cover rotating to close the lid; since the middle ring protrusion is fixed, when the pot cover is closed, the pot cover rotates, and when the pot cover rotates to an appropriate position, the driving block and the pushing part contact.

[0011] The pushing part lifts the driving block, and the driving block moves upward in the buckle plate, and a relative movement is formed between the two. The buckle plate slides to its rear end and squeezes the second spring, the buckle disengages from the slot, and the blocking part slides down to the groove under the elastic action of the first spring, and the blocking part sinks into the groove, and the two form a snap connection.

[0012] A mounting position for inserting the driving block is provided in the snap plate, a first inclined surface is provided in the mounting position, a second inclined surface is provided on the upper part of the driving block, the first inclined surface and the second inclined surface are in frictional contact when the cover is opened or closed, and relative movement is formed between the snap plate and the driving block through the contact of the inclined surfaces; a third inclined surface is provided on the top of the pushing part, and a fourth inclined surface is provided on the bottom of the driving block, and the third inclined surface and the fourth inclined surface are in frictional contact when the cover is closed.

[0013] A pressing block for pressing the rear end of the buckle plate is provided in the installation space, and a first guide groove is provided in the pressing block, and the rear end of the buckle plate is located in the first guide groove. When the cover is rotated to close, the buckle plate moves backward along the first guide groove and presses the second spring backward; when the button is pressed to open the cover, the second spring pops open the buckle plate, and the buckle plate moves forward along the first guide groove.

[0014] The rotation limit assembly includes a slide arranged on the outer side of the outer pot, and a limit card block arranged on the outer side of the pot cover, and a limit slot is arranged in the slide; the pot cover rotates and drives the limit card block to slide in the limit slot to perform the lid opening or lid closing action. When opening the lid, after pressing the button, the pot cover can be rotated in the direction of rotating to open the lid because there is no blocking and the card slot is not engaged; when closing the lid, the pot cover is rotated in the direction of rotating to close the lid, and at this time, the blocking part and the card slot need to be engaged and fastened again before the pot cover can be closed. If the user misplaces the lid, the blocking part does not drop, that is, the float valve pressure limiting rod still partially blocks the exhaust port, and the float valve cannot float up, which effectively prevents the user from misplacedly closing the lid and causing the lid to fly. After closing the lid, if the button is not pressed during cooking, the lid cannot be rotated in the direction of opening the lid due to the locking connection between the blocking part and the slot. When the user controls the lid to rotate in the direction of closing the lid, the limit block will contact the inner side of the limit slot to form a limit movement contact surface, thereby blocking the rotation of the lid. After closing the lid, the user cannot rotate the lid clockwise or counterclockwise.

[0015] The guide block comprises a guide part, the top of which is provided with a fifth inclined surface, the other end of the float valve pressure limiting rod is provided with a sixth inclined surface, and the fifth inclined surface and the sixth inclined surface are in contact with each other when the cover is opened or closed.

[0016] A guide block is arranged in the installation space, a second guide groove is arranged in the guide block, and a pressure limiting rod portion of the float valve is located in the guide groove.

[0017] In the direction of the float valve pressure limiting rod moving toward the exhaust port, a third spring is arranged inside the float valve pressure limiting rod, a stopper is arranged inside the cover, one end of the third spring is close to the stopper, the float valve pressure limiting rod moves toward the exhaust port, and the inner side of the float valve pressure limiting rod presses the third spring toward the stopper. When the guide part moves upward, the fifth inclined surface of the guide part contacts the sixth inclined surface of the float valve pressure limiting rod, the float valve pressure limiting rod moves toward the exhaust port and presses the third spring; when the cover is closed, the guide stopper descends, the third spring pops open the float valve pressure limiting rod, and the float valve pressure limiting rod is reset and moves away from the exhaust port.

[0018] The beneficial effects of the present invention are as follows:

[0019] a. A float valve pressure limiting rod and a guide block for triggering the movement of the float valve pressure limiting rod are arranged in the pot cover of the pressure cooker. A button for controlling the guide block is arranged on the pot cover. The guide block drives the float valve pressure limiting rod to move toward the exhaust port, and the float valve pressure limiting rod partially blocks the exhaust port to limit the float valve from floating toward the exhaust port. The float valve does not block the exhaust port, and the gas in the pot is discharged from the exhaust port. The air pressure in the pot gradually decreases, and the pot cover is opened when the pressure cooker is depressurized; when the pressure in the pot of the pressure cooker is high, the float valve floats toward the exhaust port, blocking the float valve pressure limiting rod from moving toward the exhaust port, and the button cannot be pressed; when the pressure in the pot of the pressure cooker is too high, the button cannot be pressed, and the pressure cooker has the characteristics of safety and reliability;

[0020] b. The blocking part and the groove are buckled, and the buckling is in the direction of rotating to open the lid; a rotation limit assembly is provided between the pot lid and the outer pot, and the limit movement contact surface of the rotation limit assembly is in the direction of rotating to close the lid; when the lid needs to be opened, the button is pressed, and the button drives the blocking part of the guide block to move upward, so that the blocking part can be separated from the groove of the middle ring protrusion upward, and only by pressing the button can the pressure cooker be in the exhaust action, and the lid can be opened after the pressure cooker is exhausted. When there is still air pressure in the pressure cooker, the user cannot force or arbitrarily open the lid. Before rotating to open the lid, the user must press the button, and the user cannot arbitrarily rotate the pot lid before pressing the button; the blocking part and the groove are buckled to increase the locking strength of the pot lid;

[0021] In summary, on the one hand, ordinary Kuang-type pressure cookers basically use the push rod plate head to rub the heat-insulating cover to generate resistance, and the pressure cooker cover opening structure of the present invention effectively solves the problem that the process strength of ordinary Kuang-type pressure cookers cannot reach the strength of a normal person to open the cover, causing a force of more than 400N.

[0022] On the other hand, common pressure cookers have a float valve that rises and falls freely. When the internal pressure exceeds 4KPA, the float valve will seal and press upward. The pressure cooker lid opening structure of the present invention adds a blocking structure (float valve pressure limiting rod) to solve the problem that closing the lid is not the only problem that the lid cannot be pressed upward, thereby preventing personal danger.

[0023] In addition, the present invention effectively reduces the risk of explosion of the pressure cooker, thereby improving safety. It can increase safety protection without adding additional complex protection structures while keeping all existing safety protection costs unchanged. It solves the technical difficulties and pain points of the pressure cooker explosion phenomenon that is most likely to occur on the market, and adds a layer of safety protection without affecting any existing pressure cooker functional experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The figure is a schematic diagram of the three-dimensional structure of a pot cover in a closed state according to an embodiment of the present invention.

[0025] Figure 2 for Figure 1 A partial enlarged view.

[0026] Figure 3 , Figure 6 They are respectively schematic diagrams of the planar structure of the pot cover (viewed from above).

[0027] Figure 4 for Figure 3 Schematic diagram of the AA cross-section structure.

[0028] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0029] Figure 7 for Figure 6Schematic diagram of the BB cross-section structure.

[0030] Figure 8 for Figure 7 Enlarged view of point B in the middle.

[0031] Fig. 9 for Figure 6 Schematic diagram of the CC cross-section structure.

[0032] Fig.10 for Fig. 9 Enlarged view of point C in the middle.

[0033] Fig.11 The figure is a schematic diagram of a structure of a middle ring protrusion provided below a pot cover according to an embodiment of the present invention.

[0034] Fig.12 The figure is a schematic diagram of the three-dimensional structure of a pot cover in an open state according to an embodiment of the present invention.

[0035] Fig.13 The figure is a schematic diagram of the three-dimensional structure of a pressure cooker according to an embodiment of the present invention.

[0036] Fig.14 The figure is a schematic diagram of the internal structure of a pot lid in an open state according to an embodiment of the present invention.

[0037] Fig.15 for Fig.14 Enlarged view of point D in the middle. DETAILED DESCRIPTION

[0038] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0039] See also Figure 1 A pressure cooker comprises a surface cover 1 and an upper cover 2 which are assembled into a pot cover, an assembly gap between the surface cover 1 and the upper cover 2 forms an installation space, the upper cover 2 is provided with an exhaust port 6, a float valve 5 is provided in the exhaust port 6, a float valve pressure limiting rod 3 which moves forward and backward is provided in the installation space, and a guide block 4 which triggers the movement of the float valve pressure limiting rod 3 is provided, the guide block 4 is arranged in the installation space for up and down movement, one end of the float valve pressure limiting rod 3 is located at one side of the exhaust port 6, the surface cover 1 or the upper cover 2 is provided with a button 2.1, and the button 2.1 is matched and connected with the guide block 4.

[0040] A guide block 12 is provided in the installation space, a second guide groove is provided in the guide block 12, and a portion of the float valve pressure limiting rod 3 is located in the guide groove.

[0041] In the closed state, one end of the float valve pressure limiting rod 3 is close to the exhaust port 6. At this time, the float valve pressure limiting rod 3 has not yet blocked the exhaust port 6. When there is air pressure in the pot, the float valve 5 can float up.

[0042] See also Figure 2The guide block 4 includes a blocking portion 4.1 and a guiding portion 4.3 connected to each other. A mounting surface is provided outwardly at the bottom of the upper cover 2. The blocking portion 4.1 is arranged on the mounting surface. A through hole is provided on the mounting surface. The blocking portion 4.1 is in the through hole. A buckle plate 10 is also provided on the mounting surface. A driving block 11 is provided in the buckle plate 10. A through hole is also provided on the mounting surface corresponding to the driving block 11, so that the blocking portion 4.1 and the driving block 11 can move up and down.

[0043] A first spring 4.2 is arranged in the blocking part 4.1. A rotating lever 9 is arranged in the installation space, and a latch 9.1 is arranged on the lever 9. The bottom of the button 2.1 contacts one end of the lever 9, and the other end of the lever 9 is inserted into the blocking part 4.1.

[0044] A pressing block 14 for pressing the rear end of the buckle plate 10 is arranged in the installation space. A first guide groove is arranged in the pressing block 14. The rear end of the buckle plate 10 is located in the first guide groove.

[0045] See 3. Figure 4 and Fig.11 The pressure cooker has a middle ring protrusion 7 below the guide stopper 4; the middle ring protrusion 7 is located below the entire pot cover and at the outer edge of the pot body. The middle ring protrusion 7 is provided with a groove 7.1; in the closed lid state, the blocking portion 4.1 and the groove 7.1 are buckled, and the buckling is in the direction of rotating the lid to open.

[0046] See also Figure 5 A buckle 10.1 is provided at the front end of the buckle plate 10, a second spring 10.2 is provided at the rear end of the buckle plate 10, a slot 4.4 is provided on the blocking portion 4.1, and a pushing portion 7.2 is provided on the middle ring protrusion 7; in the closed state, the buckle 10.1 contacts the outer surface of the blocking portion 4.1, the slot 4.4 is below the buckle 10.1, and the driving block 10 is located above the pushing portion 7.2.

[0047] A mounting position 10.3 for inserting the driving block 11 is provided in the buckle plate 10, a first inclined surface 10.4 is provided in the mounting position 10.3, a second inclined surface 11.1 is provided on the upper part of the driving block 11, and the first inclined surface 10.4 and the second inclined surface 11.1 are in friction contact with each other when the cover is opened or closed; a third inclined surface 7.3 is provided on the top of the pushing portion 7.2, and a fourth inclined surface 11.2 is provided on the bottom of the driving block 11, and the third inclined surface 7.3 and the fourth inclined surface 11.2 are in friction contact with each other when the cover is closed.

[0048] See also Figure 6-Figure 8 A fifth inclined surface 4.5 is provided at the top of the guide portion 4.3, and a sixth inclined surface 3.2 is provided at the other end of the float valve pressure limiting rod 3. The fifth inclined surface 4.5 and the sixth inclined surface 3.2 are in contact with each other when the cover is opened or closed.

[0049] In the direction of movement of the float valve pressure limiting rod 3 toward the exhaust port 6, a third spring 3.1 is arranged in the float valve pressure limiting rod 3, a stopper 1.1 is arranged in the cover 1, and one end of the third spring 3.1 is close to the stopper 1.1.

[0050] See also Fig. 9 , Fig.10 The pressing surface of the button 2.2 is located on the cover 1, and the pressing portion of the button 2.2 passes through the upper cover and contacts the lever 9.

[0051] See also Fig.12 , Fig.13 The pressure cooker also includes an outer pot 8 assembled with the pot cover, and the pot cover rotates clockwise or counterclockwise toward the outer pot 8 to open or close the lid; a rotation limit assembly is provided between the pot cover and the outer pot 8, and a limit motion contact surface of the rotation limit assembly is in the rotation and closing direction.

[0052] The rotation limit assembly includes a slide 8.1 arranged on the outside of the outer pot 8, and a limit block 13 arranged on the outside of the pot cover. A limit groove 8.2 is arranged in the slide 8.1; the pot cover rotates and drives the limit block 13 to slide in the limit groove 8.2 to open or close the lid.

[0053] When the pot lid is in the closed state, the pot lid rotates in the open direction (clockwise), and the pot lid drives the limit block 13 to rotate clockwise in the limit groove 8.2. However, since the blocking portion 4.1 and the groove 7.1 are engaged, a lock is formed to prevent accidental unlocking, and the pot lid cannot rotate clockwise. When the pot lid rotates in the closed direction (counterclockwise), the pot lid drives the limit block 13 to rotate counterclockwise in the limit groove 8.2, and the limit block 13 will contact the inner wall of the limit groove 8.2 to prevent the pot lid from rotating counterclockwise. It prevents the user from opening the lid at will when the pressure cooker with the lid closed is cooking. The user cannot open the lid at will under the air pressure in the pot, effectively preventing the lid from flying off, and is safe and reliable.

[0054] The working logic of the present invention is:

[0055] When the lid needs to be opened: press the button 2.1, the guide block 4 rises, the blocking part 4.1 is separated from the slot 7.1 of the middle ring protrusion 7, the driving block 11 sinks, the buckle 10.1 of the buckle plate 10 and the slot 4.4 of the blocking part 4.1 are buckled, the float valve pressure limiting rod 3 partially blocks the exhaust port 6, and the float valve 5 is limited to float up (the pressure cooker is always exhausted), and the pressure is released and the lid is opened at the same time.

[0056] When the lid needs to be closed: rotate to a suitable position, the pushing portion 7.2 of the middle ring protrusion 7 drives the driving block 11 to float up, the buckle 10.1 disengages from the slot 4.4, and the blocking portion 4.1 presses down against the slot 7.1 of the middle ring protrusion 7 to lock the pot lid (preventing the pot lid from moving clockwise); when the pot lid moves counterclockwise, it is stuck by the limiting motion contact surface between the limiting block 13 and the limiting slot 8.2 (preventing the pot lid from moving counterclockwise), ensuring that the pot lid will not rotate clockwise or counterclockwise.

[0057] When the cover needs to be opened, the button 2.1 is pressed to drive the guide block 4 to move upward. The button 2.1 drives the blocking portion 4.1 of the guide block 4 to move upward through the lever 9. The blocking portion 4.1 moves upward and disengages from the groove 7.1, and the first spring 4.2 is compressed upward in the blocking portion 4.1. With the latch 91 as the fulcrum for the lever 9 to rotate and tilt, pressing the button 2.1 drives the guide block 4 to move upward along the set track.

[0058] The guide block 4 drives the float valve pressure limiting rod 3 to move toward the exhaust port 6, and the float valve pressure limiting rod 3 moves toward the exhaust port 6, and the inner side of the float valve pressure limiting rod 3 presses the third spring 3.1 toward the block 1.1, and the float valve pressure limiting rod 3 partially blocks the exhaust port 6 to limit the float valve 5 from floating toward the exhaust port 6; the pressure inside the pressure cooker is high, the float valve 5 floats toward the exhaust port 6, blocking the float valve pressure limiting rod 3 from moving toward the exhaust port 6, and the button 2.1 cannot be pressed.

[0059] See also Fig.14 , Fig.15 When the cover is opened, the blocking portion 4.1 moves upward with the guide block 4, the slot 4.4 and the buckle 10.1 are gradually aligned, and under the elastic action of the second spring 10.2, the buckle 10.1 and the slot 4.4 are buckled to limit the freedom of the guide block 4 to move upward and fix the upward movement position of the guide block 4.

[0060] When the lid is closed, the inclined surfaces between the driving block 11 and the pushing part 7.2 are in contact in the direction of the lid turning to close the lid, the pushing part 7.2 lifts up the driving block 11, and the driving block 11 moves upward in the buckle plate 10, and a relative movement is formed between the two. The buckle plate 10 slides toward its rear end and squeezes the second spring 10.2, the buckle 10.1 is separated from the slot 4.4, and the blocking part 4.1 slides down to the groove 7.1 under the elastic action of the first spring 4.2, and the blocking part 4.1 sinks into the groove 7.1, the two form a snap connection, and the lid is locked.

[0061] When the guide block 4 moves downward, the float valve pressure limiting rod 3, driven by the power of the third spring 3.1, leaves the exhaust port 6, releasing the floating restriction of the float valve 5, and the float valve 5 can move freely at the only designated position of the cover, and a sealing effect is formed when pressing upward (the float valve 5 blocks the exhaust port).

[0062] The above is a preferred embodiment of the present invention, which shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for illustrating the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A pressure cooker, comprising a surface cover (1) and an upper cover (2) assembled into a cooker cover, wherein an assembly gap between the surface cover (1) and the upper cover (2) forms an installation space, the upper cover (2) is provided with an exhaust port (6), and a float valve (5) matching the pressure cooker is provided in the exhaust port (6), characterized in that: A float valve pressure limiting rod (3) and a guide block (4) for triggering the movement of the float valve pressure limiting rod (3) are provided in the installation space. The guide block (4) and the float valve pressure limiting rod (3) are movably arranged in the installation space. One end of the float valve pressure limiting rod (3) is located on one side of the exhaust port (6). The surface cover (1) or the upper cover (2) is provided with a button (2.1). The button (2.1) and the guide block (4) are cooperatively connected. Pressing the button (2.1) drives the guide block (4) to move and triggers the exhaust port (6). The float valve pressure limiting rod (3) moves toward the exhaust port (6), and the float valve pressure limiting rod (3) partially blocks the exhaust port (6), thereby limiting the float valve (5) from floating up toward the exhaust port (6); the pressure inside the pressure cooker is high, the float valve (5) floats up toward the exhaust port (6), and blocks the float valve pressure limiting rod (3) from moving toward the exhaust port (6), thereby blocking the button (2.1) from being pressed; in the direction of rotating to open the lid, a middle ring protrusion (7) is provided inside the pressure cooker, which is partially engaged with the guide stopper (4); The guide stopper (4) comprises a stopper portion (4.1), and the middle ring protrusion (7) is provided with a groove (7.1); the stopper portion (4.1) and the groove (7.1) are buckled in the lid-closed state, and the buckling is in the direction of rotating to open the lid; the pressure cooker also comprises an outer pot (8) assembled with the pot cover, and the pot cover rotates clockwise or counterclockwise toward the outer pot (8) to open or close the lid; a rotation limit assembly is provided between the pot cover and the outer pot (8), and a limit motion contact surface of the rotation limit assembly is in the direction of rotating to close the lid; The guide block (4) comprises a guide portion (4.3), a fifth inclined surface (4.5) is provided at the top end of the guide portion (4.3), a sixth inclined surface (3.2) is provided at the other end of the float valve pressure limiting rod (3), and the fifth inclined surface (4.5) and the sixth inclined surface (3.2) are in contact when the cover is opened or closed.

2. The pressure cooker according to claim 1, characterized in that: A first spring (4.2) is provided in the blocking portion (4.1), a rotatable lever (9) is provided in the installation space, a latch (9.1) is provided on the lever (9), the bottom of the key (2.1) contacts one end of the lever (9), and the other end of the lever (9) is inserted into the blocking portion (4.1); the key (2.1) drives the blocking portion (4.1) to disengage from the groove ( 7.1), and the first spring (4.2) is compressed in the blocking portion (4.1).

3. The pressure cooker according to claim 2, characterized in that: A buckle plate (10) is provided in the installation space, a drive block (11) is provided in the buckle plate (10), a buckle (10.1) is provided at the front end of the buckle plate (10), a second spring (10.2) is provided at the rear end of the buckle plate (10), a clamping groove (4.4) is provided on the blocking portion (4.1), and a pushing portion (7.2) is provided on the middle ring protrusion (7); in a closed state, the buckle (10.1) and the outer surface of the blocking portion (4.1) are in contact, the clamping groove (4.4) is below the buckle (10.1), and the drive block (11) is located above the pushing portion (7.2); in an open state, the blocking portion (4.1) moves upward along with the guide block (4), the clamping groove (4.4) and the buckle (10.1) are gradually aligned, and the second spring (10.2) is moved upward. .2), the buckle (10.1) and the slot (4.4) are engaged with each other to limit the freedom of the guide block (4) to move upward; when the lid is closed, the driving block (11) and the pushing portion (7.2) are in contact in the direction of the lid turning to close the lid, the pushing portion (7.2) lifts up the driving block (11), and the driving block (11) moves upward in the buckle plate (10), and relative movement is formed between the two. The buckle plate (10) slides toward its rear end and squeezes the second spring (10.2), the buckle (10.1) is separated from the slot (4.4), and the blocking portion (4.1) slides down toward the groove (7.1) under the elastic action of the first spring (4.2), and the blocking portion (4.1) sinks into the groove (7.1), and the two are connected.

4. The pressure cooker according to claim 3, characterized in that: The buckle plate (10) is provided with a mounting position (10.3) for inserting the drive block (11), the mounting position (10.3) is provided with a first inclined surface (10.4), the upper portion of the drive block (11) is provided with a second inclined surface (11.1), the first inclined surface (10.4) and the second inclined surface (11.1) are in frictional contact with each other when the cover is opened or closed; the top of the push portion (7.2) is provided with a third inclined surface (7.3), the bottom of the drive block (11) is provided with a fourth inclined surface (11.2), the third inclined surface (7.3) and the fourth inclined surface (11.2) are in frictional contact with each other when the cover is closed.

5. The pressure cooker according to claim 4, characterized in that: A pressing block (14) for pressing the rear end of the buckle plate (10) is provided in the installation space, a first guide groove is provided in the pressing block (14), and the rear end portion of the buckle plate (10) is located in the first guide groove.

6. The pressure cooker according to claim 3, characterized in that: The rotation limiting assembly comprises a slide (8.1) arranged on the outside of the outer pot (8), and a limiting clamping block (13) arranged on the outside of the pot cover, and a limiting groove (8.2) is arranged in the slide (8.1); the pot cover rotates and drives the limiting clamping block (13) to slide in the limiting groove (8.2) to perform the lid opening or lid closing action.

7. The pressure cooker according to claim 1, characterized in that: A guide block (12) is provided in the installation space, a second guide groove is provided in the guide block (12), and a portion of the float valve pressure limiting rod (3) is located in the guide groove.

8. The pressure cooker according to claim 1, characterized in that: In the direction of movement of the float valve pressure limiting rod (3) toward the exhaust port (6), a third spring (3.1) is provided in the float valve pressure limiting rod (3), a stopper (1.1) is provided in the surface cover (1), the float valve pressure limiting rod (3) moves toward the exhaust port (6), and the inner side of the float valve pressure limiting rod (3) presses the third spring (3.1) toward the stopper (1.1).

Images