A pressure limiting valve and a micro-pressure electric rice cooker thereof

Abstract

The utility model discloses a pressure limiting valve, including pressure limiting valve silica gel, the pressure limiting valve silica gel is equipped with the pressure limiting hammer that can move up and down to carry out the plugging of exhaust hole, the pressure limiting valve silica gel upper cover is equipped with pressure limiting cover, the bottom of pressure limiting valve silica gel is equipped with exhaust hole, the upside of pressure limiting valve silica gel is equipped with the recess that communicates with exhaust hole, the lower extreme of pressure limiting hammer and the side wall of recess have the gap, and the top of pressure limiting cover sets up in the exhaust hole. Also disclose a kind of micro-pressure electric cooker, including pot body, and the pot cover on the pot body is covered, the pressure limiting valve is set on the pot cover, and safety valve is equipped on the pot cover. Thus when heating, the micro-pressure effect realized by pressure limiting valve makes that pressure in pot is uniform, ensures that when cooking, it will be at the pressure value set, so that cooking food is more uniform, greatly improves on taste, satisfies consumer pursuit to cooking, and simultaneously through being equipped with safety valve to ensure the safety when cooking.

Description

Technical Field

[0001] This utility model relates to the technical field of small household appliances, and in particular to a pressure limiting valve and its micro-pressure rice cooker. Background Technology

[0002] Rice cookers have become a common cooking product in everyday households, and their ease of use has been widely recognized by consumers. Their appearance and styles are also becoming increasingly diverse, bringing more cooking experiences and fun to our families.

[0003] Most rice cookers on the market currently lack a micro-pressure function. However, with the addition of micro-pressure, rice grains are cooked better, absorbing more water and resulting in more uniform texture, perfectly meeting the cooking needs of most consumers. While patent application CN221383230U discloses a micro-pressure rice cooker, its micro-pressure valve seat is made of elastic material. This means that under excessively high internal pressure, the counterweight can easily be pushed out of the valve seat, leading to less than ideal micro-pressure cooking results. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a pressure limiting valve that enables micro-pressure cooking and whose valve core is not easily pushed out, and a micro-pressure rice cooker thereof.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0006] A pressure limiting valve includes a pressure limiting silicone sealant. A pressure limiting hammer that can move up and down is disposed within the pressure limiting silicone sealant. A pressure limiting cap is provided on the top of the pressure limiting silicone sealant to prevent the pressure limiting hammer from detaching from the sealant. A vent hole is provided at the bottom of the pressure limiting silicone sealant. A groove communicating with the vent hole is provided on the upper side of the pressure limiting silicone sealant. The lower end of the pressure limiting hammer is disposed within the groove and can move up and down along the groove to block the vent hole. A gap exists between the lower end of the pressure limiting hammer and the side wall of the groove. A vent hole is provided at the top of the pressure limiting cap.

[0007] In a preferred embodiment of this utility model, the bottom of the pressure limiting valve silicone is connected to an anti-clogging silicone pad, the bottom of the pressure limiting valve silicone is provided with several slots, the top of the anti-clogging silicone pad is provided with several plugs that can be inserted into the slots, the bottom of the anti-clogging silicone pad is provided with a first air passage communicating with the exhaust hole, and the side wall of the anti-clogging silicone pad is provided with several second air passages communicating with the exhaust hole.

[0008] In a preferred embodiment of this utility model, a limiting protrusion is provided on the upper side of the groove sidewall to restrict the tilting of the pressure limiting hammer, so that the shape of the upper opening of the groove is Y-shaped.

[0009] In a preferred embodiment of this utility model, the pressure limiting hammer includes a first hammer head disposed at the upper end and capable of abutting against the pressure limiting cover, a second hammer head disposed at the lower end and capable of moving up and down within the groove to block the exhaust hole, and a connecting rod disposed between the first hammer head and the second hammer head to connect the two. The lower side of the top of the pressure limiting cover has a downwardly extending abutting protrusion that abuts against the first hammer head.

[0010] In a preferred embodiment of this utility model, a snap-fit ​​structure is provided between the pressure-limiting valve silicone and the pressure-limiting cover to allow for detachable connection between the two. The snap-fit ​​structure includes a bottom cover disposed at the bottom of the pressure-limiting cover and an elastic snap-fit ​​disposed on the bottom cover and capable of being fastened to the side wall of the pressure-limiting valve silicone.

[0011] This utility model also provides a micro-pressure rice cooker, including a pot body and a pot lid covering the pot body. The pot lid is provided with a pressure limiting valve as described above, and the pot lid is provided with a first through hole. The silicone side wall of the pressure limiting valve and located below the pressure limiting cover is provided with an annular groove that can be fastened to the first through hole.

[0012] In a preferred embodiment of this utility model, the pot lid is provided with a second through hole, and a safety valve is provided at the second through hole. The safety valve is either a push-button type or a pull-out type.

[0013] In a preferred embodiment of this utility model, when the safety valve is a push-button safety valve, the safety valve includes a push-button safety valve sealing ring disposed at the second through hole, a valve core disposed within the push-button safety valve sealing ring and movable up and down, a float rubber ring disposed at the bottom of the valve core and located below the pot lid, and a safety valve cover disposed at the top of the valve core and located above the pot lid.

[0014] In a preferred embodiment of this utility model, when the safety valve is a hand-operated safety valve, the safety valve includes a hand-operated safety valve sealing ring disposed at the second through hole, a valve body disposed on the hand-operated safety valve sealing ring, and a pull rope disposed between the hand-operated safety valve sealing ring and the valve body. One end of the pull rope is connected to the side wall of the hand-operated safety valve sealing ring, and the other end is connected to the top of the valve body.

[0015] In a preferred embodiment of this utility model, the hand-operated safety valve sealing ring, the valve body, and the pull rope are integrated into a single structure.

[0016] The beneficial effects of this utility model are as follows: The pressure limiting valve includes a pressure limiting valve silicone, a pressure limiting hammer, and a pressure limiting cover. The bottom of the pressure limiting valve silicone has a vent hole, and the upper side of the silicone has a groove communicating with the vent hole. The lower end of the pressure limiting hammer is located in the groove and can move up and down along the groove to block the vent hole. There is a gap between the lower end of the pressure limiting hammer and the side wall of the groove. An air vent is located on the top of the pressure limiting cover. During heating, the pressure inside the pot gradually accumulates. When the pressure reaches or exceeds the set value of the pressure limiting valve, the pressure limiting hammer is pushed up by the pressure, releasing the pressure beyond the set value, thus achieving a micro-pressure effect. This ensures uniform pressure inside the pot, guaranteeing that cooking is performed at the set pressure value, thereby achieving the effect of a micro-pressure rice cooker. This results in more even cooking, significantly improved taste, and meets consumers' cooking demands. Simultaneously, the pressure limiting cover prevents the pressure limiting hammer from being pushed out of the pressure limiting valve silicone under excessive pressure, ensuring safety during cooking. Furthermore, the lid of the low-pressure rice cooker is equipped with a safety valve to prevent excessive gas pressure inside the pot, further ensuring safety during cooking; and the lid can be opened by opening the safety valve during cooking. Attached Figure Description

[0017] Figure 1 This is an exploded view of the pressure relief valve of this utility model;

[0018] Figure 2 This is a schematic diagram of the pressure limiting cap in this utility model;

[0019] Figure 3 This is a cross-sectional view of the pressure limiting cap in this utility model;

[0020] Figure 4 This is a schematic diagram of the upper side of the silicone pressure limiting valve in this utility model;

[0021] Figure 5 This is a schematic diagram of the lower side of the silicone pressure-limiting valve in this utility model;

[0022] Figure 6 This is a schematic diagram of the anti-clogging silicone pad in this utility model;

[0023] Figure 7 This is a schematic diagram of the pressure-limiting hammer in this utility model;

[0024] Figure 8 This is a schematic diagram of a micro-pressure rice cooker with a push-button safety valve according to this utility model;

[0025] Figure 9 This is a schematic diagram of the pot lid when the safety valve of this utility model is a push-button type;

[0026] Figure 10 This is a first cross-sectional view of the pot lid when the safety valve of this utility model is a press-type valve;

[0027] Figure 11 This is a second sectional view of the pot lid when the safety valve of this utility model is a push-button type;

[0028] Figure 12 This is an exploded view of the push-button safety valve in this utility model;

[0029] Figure 13 This is a schematic diagram of a micro-pressure rice cooker with a manually operated safety valve according to this utility model.

[0030] Figure 14 This is a cross-sectional view of the pot lid when the safety valve of this utility model is a manual pull-out type;

[0031] Figure 15 This is a schematic diagram of the hand-operated safety valve in this utility model. Detailed Implementation

[0032] The technical solutions in the embodiments of this utility model will now be clearly and completely described in conjunction with the accompanying drawings.

[0033] Reference Figures 1 to 7 A pressure limiting valve includes a pressure limiting valve silicone 1, a pressure limiting hammer 2 that can move up and down inside the pressure limiting valve silicone 1, a pressure limiting cover 3 that can prevent the pressure limiting hammer 2 from detaching from the pressure limiting valve silicone 1, an exhaust hole 11 at the bottom of the pressure limiting valve silicone 1, a groove 12 communicating with the exhaust hole 11 on the upper side of the pressure limiting valve silicone 1, the lower end of the pressure limiting hammer 2 being disposed in the groove 12 and being able to move up and down along the groove 12 to block the exhaust hole 11, a gap being formed between the lower end of the pressure limiting hammer 2 and the side wall of the groove 12, and an exhaust hole 31 being disposed at the top of the pressure limiting cover 3. During heating, the pressure inside the pot gradually builds up. When the pressure reaches or exceeds the set value of the pressure-limiting valve, the pressure-limiting hammer 2 is pushed up, releasing the pressure beyond the set value. This achieves a micro-pressure effect, ensuring uniform pressure inside the pot and guaranteeing that cooking is performed at the set pressure value. This enables the micro-pressure rice cooker to cook food more evenly, significantly improving its taste and satisfying consumers' culinary demands. Simultaneously, the pressure-limiting cover 3 prevents the pressure-limiting hammer 2 from being pushed out of the pressure-limiting valve silicone 1 under excessive pressure, ensuring safety during cooking.

[0034] In this design, an anti-clogging silicone pad 4 is connected to the bottom of the pressure-limiting valve silicone 1. The bottom of the pressure-limiting valve silicone 1 has several slots 13, and the top of the anti-clogging silicone pad 4 has several plugs 41 that can be inserted into the slots 13. The bottom of the anti-clogging silicone pad 4 has a first air passage 42 communicating with the exhaust port 11, and the side wall of the anti-clogging silicone pad 4 has several second air passages 43 communicating with the exhaust port 11. By connecting the anti-clogging silicone pad 4 to the bottom of the pressure-limiting valve silicone 1, foreign objects are prevented from blocking the exhaust port 11, thus preventing the pressure-limiting valve from functioning properly.

[0035] In this design, a limiting protrusion 14 is provided on the upper side of the sidewall of the groove 12 to restrict the tilting of the pressure limiting hammer 2, so that the shape of the upper opening of the groove 12 is Y-shaped. This facilitates the insertion of the pressure limiting hammer 2 into the pressure limiting valve silicone 1. After the pressure limiting hammer 2 is lifted, the limiting protrusion 14 restricts the tilting range of the pressure limiting hammer 2, so that it will not fail to reset properly due to excessive tilting after pressure relief.

[0036] In this design, the pressure-limiting hammer 2 includes a first hammer head 21 located at the upper end and abutting against the pressure-limiting cover 3, a second hammer head 22 located at the lower end and movable up and down within the groove 12 to block the exhaust port 11, and a connecting rod 23 connecting the first hammer head 21 and the second hammer head 22. A downward-extending abutment protrusion 32 extends from the lower side of the top of the pressure-limiting cover 3, abutting against the first hammer head 21. Thus, the first hammer head 21 blocks the exhaust, and the pressure-limiting valve setting is changed by altering the weight of the pressure-limiting hammer 2 or the cross-sectional area of ​​the first hammer head 21; simultaneously, the abutment protrusion 32 prevents the second hammer head 22 from blocking the exhaust port 31.

[0037] In this design, a snap-fit ​​structure 5 is provided between the pressure-limiting valve silicone 1 and the pressure-limiting cover 3, allowing for a detachable connection between the two. The snap-fit ​​structure 5 includes a bottom cover 51 located at the bottom of the pressure-limiting cover 3, and an elastic snap 52 located on the bottom cover 51 and fastened to the side wall of the pressure-limiting valve silicone 1. The pressure-limiting cover 3 and the bottom cover 51 are fixedly connected by the snap-fit. The pressure-limiting cover 3 is thus fixedly connected to the pressure-limiting valve silicone 1 by the elastic snap 52 fastening it to the side wall of the pressure-limiting valve silicone 1. Disassembly is achieved by simply pulling the pressure-limiting cover 3 out.

[0038] Reference Figures 8 to 15 This utility model also provides a micro-pressure rice cooker, including a pot body 6 and a pot lid 7 covering the pot body 6. The pot lid 7 is provided with a pressure limiting valve as described above. The pot lid 7 is provided with a first through hole 71. The side wall of the pressure limiting valve silicone 1 and located below the pressure limiting cover 3 is provided with an annular groove 15 that can be fastened to the first through hole 71, so as to install the pressure limiting valve on the pot lid 7, thereby realizing the function of micro-pressure cooking.

[0039] Specifically, the pot body 6 includes a body assembly, a pot inner liner, and a handle assembly. The body assembly consists of a control panel assembly, an outer shell, an inner liner, a heat insulation cover, a sensor assembly, a heating assembly, and an input socket. The control panel assembly is mounted on the outer shell, the sensor is fitted on the heat insulation cover, the heat insulation cover is fitted on the inner liner, the heating plate is fitted on the inner liner and fastened to the heat insulation cover, and the inner liner is fitted inside the outer shell to form the heating body assembly.

[0040] In this design, the pot lid 7 has a second through hole 72, and a safety valve 8 is installed at the second through hole 72. The safety valve 8 is either a push-button type or a hand-operated type. Through the safety valve 8, when the vent hole 11 of the pressure limiting valve is blocked during heating, the excessive pressure caused by continuous pressurization will force the valve core 82 or valve body 86 of the safety valve 8 to be pushed out, thus providing a safety protection function.

[0041] In this design, when the safety valve 8 is a push-button type safety valve, it includes a push-button type safety valve sealing ring 81 located at the second through hole 72, a valve core 82 located within the push-button type safety valve sealing ring 81 and movable up and down, a float rubber ring 83 located at the bottom of the valve core 82 and below the pot lid 7, and a safety valve cover 84 located at the top of the valve core 82 and above the pot lid 7. The safety valve cover 84 is located above the push-button type safety valve sealing ring 81 and serves to prevent scalding and to fix the valve core 82 of the safety valve 8. Thus, during heating, the pot body 6 generates sufficient air pressure to lift the valve core 82. Since the float rubber ring 83 restricts the upward movement of the valve core 82, the second through hole 72 is sealed. At this time, the pot body 6 is sealed, and the internal pressure begins to accumulate until the pressure limiting hammer 2 is lifted. Of course, if it is necessary to open the lid during cooking, the safety valve cover 84 can be pressed to release the internal pressure of the pot body 6, making it convenient for consumers to open and close the lid. Furthermore, after cooking is finished, as the pot body 6 is no longer heated, the valve core 82 will move down and reset under its own weight, releasing the internal pressure of the pot body 6 and achieving an automatic pressure relief effect.

[0042] In this design, when the safety valve 8 is a manually operated safety valve, the safety valve 8 includes a manually operated safety valve sealing ring 85 disposed at the second through hole 72, a valve body 86 disposed on the manually operated safety valve sealing ring 85, and a pull rope 87 disposed between the manually operated safety valve sealing ring 85 and the valve body 86. One end of the pull rope 87 is connected to the side wall of the manually operated safety valve sealing ring 85, and the other end is connected to the top of the valve body 86. Specifically, the manually operated safety valve sealing ring 85, the valve body 86, and the pull rope 87 are an integral structure. The hand-operated safety valve sealing ring 85 is connected to the valve body 86 by a snap-fit ​​mechanism. Because it is made of silicone material, it has a certain degree of elasticity, allowing the valve body 86 to be swung out from the hand-operated safety valve sealing ring 85. The provided pull rope 87 makes it easy for the user to pull it out. After the valve body 86 is pulled out, it is not easy to lose because it is connected to the hand-operated safety valve sealing ring 85 by the pull rope 87.

[0043] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A pressure limiting valve comprising a pressure limiting valve silica gel (1), characterized in that, The pressure limiting valve silicone (1) is provided with a pressure limiting hammer (2) that can move up and down. The pressure limiting valve silicone (1) is covered with a pressure limiting cover (3) that can prevent the pressure limiting hammer (2) from detaching from the pressure limiting valve silicone (1). The bottom of the pressure limiting valve silicone (1) is provided with an exhaust hole (11). The upper side of the pressure limiting valve silicone (1) is provided with a groove (12) that communicates with the exhaust hole (11). The lower end of the pressure limiting hammer (2) is set in the groove (12) and can move up and down along the groove (12) to block the exhaust hole (11). There is a gap between the lower end of the pressure limiting hammer (2) and the side wall of the groove (12). The top of the pressure limiting cover (3) is provided with an air outlet (31).

2. A pressure-limiting valve according to claim 1, characterized in that The pressure relief valve silicone (1) has an anti-clogging silicone pad (4) connected to its bottom. The bottom of the pressure relief valve silicone (1) has several slots (13). The top of the anti-clogging silicone pad (4) has several plugs (41) that can be inserted into the slots (13). The bottom of the anti-clogging silicone pad (4) has a first air passage (42) that communicates with the exhaust port (11). The side wall of the anti-clogging silicone pad (4) has several second air passages (43) that communicate with the exhaust port (11).

3. A pressure-limiting valve according to claim 1, characterized in that The upper side of the sidewall of the groove (12) is provided with a limiting protrusion (14) that can restrict the tilting of the pressure limiting hammer (2) so that the shape of the upper opening of the groove (12) is Y-shaped.

4. The pressure-limiting valve according to claim 1, characterized in that The pressure limiting hammer (2) includes a first hammer head (21) disposed at the upper end and abutting against the pressure limiting cover (3), a second hammer head (22) disposed at the lower end and movable up and down in the groove (12) to block the exhaust hole (11), and a connecting rod (23) disposed between the first hammer head (21) and the second hammer head (22) to connect the two. The lower side of the top of the pressure limiting cover (3) has a downward extending abutting protrusion (32) that abuts against the first hammer head (21).

5. The pressure-limiting valve according to claim 1, characterized in that The pressure relief valve silicone (1) and the pressure relief cover (3) are provided with a snap-fit ​​structure (5) that allows the two to be detachably connected. The snap-fit ​​structure (5) includes a bottom cover (51) disposed at the bottom of the pressure relief cover (3) and an elastic snap (52) disposed on the bottom cover (51) and can be fastened to the side wall of the pressure relief valve silicone (1).

6. A micro-pressure rice cooker comprising a pot body (6) and a pot cover (7) covering the pot body (6), characterized in that, The pot lid (7) is provided with a pressure limiting valve as described in any one of claims 1 to 5. The pot lid (7) is provided with a first through hole (71). The side wall of the pressure limiting valve silicone (1) and located below the pressure limiting cover (3) is provided with an annular groove (15) that can be fastened to the first through hole (71).

7. The micro-pressure rice cooker according to claim 6, wherein The pot lid (7) has a second through hole (72), and a safety valve (8) is provided at the second through hole (72). The safety valve (8) is either a press-type or a hand-pull type.

8. The micro-pressure rice cooker according to claim 7, wherein, When the safety valve (8) is a press type safety valve (8), the safety valve (8) comprises a press type safety valve sealing ring (81) arranged at the second through hole (72), a valve core (82) arranged in the press type safety valve sealing ring (81) and movable up and down, a float rubber ring (83) arranged at the bottom of the valve core (82) and below the pot cover (7), and a safety valve cover (84) arranged on the valve core (82) and above the pot cover (7).

9. The micro-pressure rice cooker according to claim 7, wherein When the safety valve (8) is a hand pulling type safety valve (8), the safety valve (8) comprises a hand pulling type safety valve sealing ring (85) arranged at the second through hole (72), a valve body (86) arranged on the hand pulling type safety valve sealing ring (85), and a pulling rope (87) arranged between the hand pulling type safety valve sealing ring (85) and the valve body (86), one end of the pulling rope (87) being connected to the side wall of the hand pulling type safety valve sealing ring (85) and the other end being connected to the top of the valve body (86).

10. The micro-pressure rice cooker according to claim 9, wherein, The hand pulling type safety valve sealing ring (85), the valve body (86) and the pulling rope (87) are in an integrated structure.

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