A secondary pressurized micro-pressure rice cooker defoaming device

Abstract

The utility model discloses a secondary pressure boost's micro pressure electric rice cooker bubble breaker, including valve shell, the bottom of valve shell is provided with by the backflow sealing piece and is closed or opened pressure maintaining hole, the top of valve shell is provided with several arranged exhaust hole, and the pressure maintaining hole is passed through the inner chamber intercommunication of valve shell with exhaust hole, and the high pressure hole of being closed in low pressure, being opened in high pressure is provided in valve shell, and the bubble breaker is rotatably installed in valve shell, and the bubble breaker is provided with several blade being pushed by high pressure airflow along the circumference, when working, the air of initial low pressure stage is discharged through the clearance between backflow sealing piece and valve shell, pressure maintaining hole and exhaust hole, after pressure rises, backflow sealing piece closes pressure maintaining hole and realizes sealing, and pressure continues to increase, and high pressure hole opens, and high pressure steam enters the inner chamber of valve shell and pushes bubble breaker to rotate, stirs and breaks bubble and makes it evaporate, effectively solve the problem of the smudge caused by bubble overflow in the process of cooking rice, improve the use experience, and compact structure, convenient assembly, and strong applicability.

Description

Technical Field

[0001] This utility model relates to a rice cooker, and more particularly to a micro-pressure rice cooker bubble breaker with secondary pressurization. Background Technology

[0002] During the cooking process in a rice cooker, water rapidly vaporizes into steam, forming tiny bubbles that rise to the surface. Simultaneously, the starch in the rice absorbs water, swells, and gelatinizes, forming a viscous starch paste. This viscous starch paste hinders the rise and bursting of bubbles, causing them to continuously aggregate and merge into larger bubbles. When the internal pressure of the rice cooker reaches a preset threshold, the large bubbles are expelled through the rice cooker's exhaust valve. At the same time, the starch paste surrounding the bubbles is carried out of the exhaust vent along with the airflow, creating the "bubble phenomenon" commonly seen during rice cooking.

[0003] The exhaust valves in existing rice cookers are primarily designed to release pressure inside the pot, providing only basic venting. They lack specific design features to address the issue of overflowing bubbles and are devoid of effective defoaming structures and mechanisms. These bubbles, once they overflow the rice cooker, adhere to the surface of the pot, the lid, and surrounding surfaces, forming stubborn stains that not only affect the cleanliness of the rice cooker but also increase the cleaning burden on users. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a micro-pressure rice cooker bubble breaker with secondary pressurization.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A micro-pressure rice cooker bubble breaker with secondary pressurization includes a valve housing. The bottom of the valve housing is provided with a pressure-holding hole that is blocked or opened by a backflow seal. The top of the valve housing is provided with a plurality of arranged exhaust holes. The pressure-holding hole and the exhaust holes are connected through the inner cavity of the valve housing. The valve housing is provided with a high-pressure hole that is blocked under low pressure and opened under high pressure. A bubble breaker is rotatably installed inside the valve housing. The bubble breaker is provided with a plurality of blades along its circumference that are pushed by the high-pressure airflow.

[0006] An installation channel is provided at the bottom center of the valve housing, and a lower float valve that can be pushed up by high pressure is installed in the installation channel. An upper float valve is installed on the top of the valve housing corresponding to the lower float valve. The bubble breaker is installed between the lower float valve and the upper float valve.

[0007] The high-pressure port is located on the upper side wall of the lower float valve. When the lower float valve is not pushed up by high pressure, the high-pressure port is blocked by the inner wall of the installation channel.

[0008] The high-pressure port is located at the bottom of the valve body, and a pressure seal is installed at the bottom of the valve body to block or open the high-pressure port.

[0009] A first limit ring is installed at the lower end of the lower float valve.

[0010] The valve housing consists of a lower housing and an upper housing, which are connected by a locking structure.

[0011] The beneficial effects of this utility model are as follows: The bottom of the valve housing is provided with a pressure-holding hole that can be blocked or opened by a reflux seal, and the top of the valve housing is provided with several arranged exhaust holes. The pressure-holding hole and the exhaust holes are connected through the inner cavity of the valve housing. The valve housing is provided with a high-pressure hole that is blocked at low pressure and opened at high pressure. A bubble-breaking component is rotatably installed inside the valve housing. The bubble-breaking component has several blades along its circumference that are pushed by the high-pressure airflow. During operation, in the initial low-pressure stage, air is discharged through the gap between the reflux seal and the valve housing, the pressure-holding hole, and the exhaust hole. After the pressure increases, the reflux seal blocks the pressure-holding hole to achieve a seal. As the pressure continues to increase, the high-pressure hole opens, and high-pressure steam enters the inner cavity of the valve housing, pushing the bubble-breaking component to rotate, stirring and breaking the bubbles and causing them to evaporate. This effectively solves the problem of stains caused by overflowing bubbles during rice cooking, improves the user experience, and has a compact structure, convenient assembly, and strong applicability. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a cross-sectional view of Example 1; Figure 3 This is an exploded view of Example 1; Figure 4 This is a diagram of the lower shell structure of Example 1; Figure 5 This is a structural diagram of the bubble-breaking component in Example 1; Figure 6 This is a cross-sectional view of Example 2; Figure 7 This is an exploded view of Example 2; Figure 8 This is a diagram of the lower shell structure of Example 2; Figure 9 This is one of the structural diagrams of the bubble-breaking component in Example 2; Figure 10 This is the second structural diagram of the bubble-breaking component in Example 2. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0015] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0016] The following describes some embodiments of the present invention with reference to the accompanying drawings.

[0017] Reference Figure 1-10 A micro-pressure rice cooker defoamer with secondary pressurization includes a valve shell 1, which is composed of a lower shell 12 and an upper shell 13 connected by a locking structure. The bottom of the valve shell 1 has a pressure-holding hole 3 that is either blocked or opened by a reflux seal 2 (normally, the reflux seal 2 tends to descend due to gravity, creating a gap between the reflux seal 2 and the bottom of the valve shell 1; at this time, the inside of the rice cooker, the gap between the reflux seal 2 and the valve shell 1, the pressure-holding hole 3, and the inner cavity of the valve shell 1 are in a connected state). The top of the valve shell 1 has several arranged exhaust holes 4, and the pressure-holding hole 3 and the exhaust holes 4 are connected. The valve housing 1 is connected to the inner cavity of the valve body 1. The valve body 1 is provided with a high-pressure port 5, which is blocked under low pressure and opened under high pressure. A bubble-breaking component 6 is rotatably installed inside the valve body 1. The bubble-breaking component 6 is provided with several blades 7 along the circumference that are pushed by the high-pressure airflow. During operation, in the initial low-pressure stage, the air is discharged through the gap between the return seal and the valve body, the pressure holding port and the exhaust port. After the pressure increases, the return seal seals the pressure holding port to achieve a seal. As the pressure continues to increase, the high-pressure port opens, and high-pressure steam enters the inner cavity of the valve body to drive the bubble-breaking component to rotate, stirring and breaking the bubbles and causing them to evaporate. This effectively solves the problem of stains caused by bubbles overflowing during cooking, improves the user experience, and has a compact structure, is easy to assemble and has strong applicability.

[0018] A mounting channel is provided at the bottom center of the valve housing 1. A lower float valve 8, which can be pushed upward by high pressure, is installed in the mounting channel. An upper float valve 9 is installed on the top of the valve housing 1 corresponding to the lower float valve 8. The bubble-breaking component 6 is installed between the lower float valve 8 and the upper float valve 9. When the internal pressure of the rice cooker reaches the threshold, it will push the lower float valve 8 to rise. At the same time, the bubble-breaking component 6 and the upper float valve 9 will rise synchronously. When the bubble-breaking component 6 rotates, the upper float valve 9 will rotate synchronously due to friction. Therefore, after the upper float valve 9 rises, that is, after it separates from the valve housing 1, the friction between the upper float valve 9 and the valve housing 1 is greatly reduced, thereby improving the smoothness of the rotation of the bubble-breaking component 6. Example

[0019] The high-pressure port 5 is located on the upper side wall of the lower float valve 8. When the lower float valve 8 is not pushed up by high pressure, the high-pressure port 5 is blocked by the inner wall of the installation channel. When the internal pressure of the rice cooker reaches the threshold, it will push the lower float valve 8 up, and the high-pressure port 5 will be opened. The high-pressure steam in the rice cooker will enter the interior of the valve body 1 through the high-pressure port 5, and at the same time, it will push the blade 7, causing the bubble-breaking component 6 to rotate and break the bubbles, thereby achieving the effect of preventing overflow.

[0020] Furthermore, a first connecting rod 14 is provided on the upper side of the bubble-breaking component 6, and the first connecting rod 14 is fixedly connected to the upper float valve 9. A first protrusion 15 is provided on the bottom of the bubble-breaking component 6, and the first protrusion 15 abuts against the top surface of the lower float valve 8. When the bubble-breaking component 6 rotates, the first protrusion 15 can greatly reduce the friction between the bubble-breaking component 6 and the lower float valve 8, thereby further improving the smoothness of the rotation of the bubble-breaking component 6.

[0021] like Figure 5 As shown, the blade 7 has an arc-shaped structure, and its overall tilt angle is 40°-50°. Example

[0022] The high-pressure port 5 is located at the bottom of the valve body 1, and a pressure sealing element 10 for blocking or opening the high-pressure port 5 is installed at the bottom of the valve body 1. Furthermore, the bottom of the valve body 1 is provided with a boss 16 to avoid interference with the return seal 2. The high pressure hole 5 is provided on the boss 16, and the pressure seal 10 is also installed on the boss 16. The pressure seal 10 is fixedly connected to the boss 16 through a connecting part. The pressure seal 10 is provided with a free end, which is attached to the high pressure hole 5. When the internal pressure of the rice cooker reaches the threshold, the high pressure steam will push open the free end of the pressure seal 10 and push the blade 7, causing the bubble-breaking element 6 to rotate and break the bubbles, thereby achieving the effect of preventing overflow.

[0023] Furthermore, the upper float valve 9 is provided with a second connecting rod 17, the center of the bubble-breaking component 6 is provided with a through hole, the second connecting rod 17 passes through the through hole, and a second limiting ring 18 is installed at the end of the second connecting rod 17. The end of the second connecting rod 17 is arc-shaped or has a protruding structure, and the end of the second connecting rod 17 abuts against the top surface of the lower float valve 8.

[0024] Furthermore, the pressure required for the lower float valve 8 to rise is less than the pressure required to open the free end of the pressure seal 10. As the internal pressure of the rice cooker gradually increases, the lower float valve 8 will be pushed up first, and then the pressure will continue to rise before the free end of the pressure seal 10 is opened.

[0025] For example, when the pressure inside the rice cooker rises to about 1000 Pa, the lower float valve 8 rises, which is the first pressurization effect. When the pressure inside the rice cooker rises to about 2000 Pa, the free end of the pressure seal 10 is opened, which is the second pressurization effect, thereby improving the cooking effect.

[0026] like Figure 9 The blade 7 has an arc-shaped surface structure, such as... Figure 10 The blade 7 has a vertical part and an inclined part, and the inclined part has an inclination angle of 40°-50°.

[0027] Therefore, in embodiments 1 and 2, the function of the lower float valve 8, the bubble-breaking component 6, and the upper float valve 9 rising is to reduce the friction force that the bubble-breaking component 6 needs to overcome when rotating, thereby improving the smoothness of rotation. In embodiment 1, the high-pressure port 5 is connected when the lower float valve 8 rises. In embodiment 2, the rise of the lower float valve 8 is unrelated to whether the high-pressure port 5 is connected. The connection of the high-pressure port 5 requires the free end of the pressure seal 10 to be opened.

[0028] The lower end of the lower float valve 8 is equipped with a first limiting ring 11 to prevent the lower float valve 8 from rising too much, which would cause the top of the bubble-breaking component 6 to contact the inner wall of the valve housing 1, thereby increasing the friction.

[0029] When the rice cooker is first started, the internal pressure is low. The air inside the rice cooker passes through the gap between the return seal 2 and the valve shell 1, the pressure holding hole 3, and the inner cavity of the valve shell 1, and finally exits from the exhaust hole 4. As the pressure inside the rice cooker increases, the high pressure pushes the return seal 2 upward, thereby blocking the pressure holding hole 3. At this time, the rice cooker is in a sealed state. As the pressure inside the rice cooker continues to increase, the lower float valve 8, the bubble-breaking element 6, and the upper float valve 9 are simultaneously pushed upward to prepare for the rotation of the bubble-breaking element 6. In embodiment 1, the high pressure hole 5 is opened simultaneously. In embodiment 2, the pressure inside the rice cooker needs to continue to increase to open the free end of the pressure seal 10. At this time, the high pressure hole 5 is opened, and high pressure steam enters the inner cavity of the valve shell 1 through the high pressure hole 5, pushing the bubble-breaking element 6 to rotate, stirring and breaking the bubbles to evaporate them, thereby achieving the effect of preventing overflow.

[0030] Furthermore, if the high-pressure steam flows too fast, causing a sudden drop in pressure inside the rice cooker, resulting in the pressure inside the valve shell 1 being greater than the pressure inside the rice cooker, some of the steam will push the return seal 2 downwards, thereby opening the pressure-holding hole 3. This allows the steam to flow back into the pot through the pressure-holding hole 3, giving the rice cooker a good pressure-holding effect.

[0031] When the rice cooker stops working (i.e., during the heat preservation period), the pressure inside the rice cooker is sufficient to push the backflow seal 2 upward to block the pressure-holding hole 3, but insufficient to open the high-pressure hole 5 (when the pressure in the rice cooker drops, the lower float valve 8, the bubble-breaking element 6, and the upper float valve 9 will fall back down due to gravity. In embodiment 1, the pressure at this time is insufficient to push the lower float valve 8 upward, and in embodiment 2, the pressure at this time is insufficient to push the free end of the pressure seal 10 open). At this time, the rice cooker has good overall sealing performance, thereby achieving the effect of heat preservation and pressure preservation.

[0032] Figure 4 Figure A shows the fixing hole of the reflux seal 2 in Embodiment 1. Figure 8 Figure B shows the fixing hole of the reflux seal 2 in Embodiment 2. Figure 8 Figure C shows the fixing hole of the pressure seal 10 in Embodiment 2.

[0033] In this invention, the term "multiple" refers to two or more items unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0035] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A micro-pressure rice cooker bubble breaker with secondary pressurization, comprising a valve housing (1), characterized in that... The bottom of the valve housing (1) is provided with a pressure holding hole (3) which is blocked or opened by a backflow seal (2). The top of the valve housing (1) is provided with a plurality of exhaust holes (4) arranged in a row. The pressure holding hole (3) and the exhaust hole (4) are connected through the inner cavity of the valve housing (1). The valve housing (1) is provided with a high pressure hole (5) which is blocked when the pressure is low and opened when the pressure is high. A bubble breaking element (6) is rotatably installed in the valve housing (1). The bubble breaking element (6) is provided with a plurality of blades (7) pushed by the high pressure airflow along the circumferential direction.

2. The micro-pressure rice cooker bubble breaker with secondary pressurization according to claim 1, characterized in that... The valve housing (1) has an installation channel at the bottom center, and a lower float valve (8) that can be pushed up by high pressure is installed in the installation channel. An upper float valve (9) is installed on the top of the valve housing (1) corresponding to the lower float valve (8). The bubble-breaking component (6) is installed between the lower float valve (8) and the upper float valve (9).

3. The micro-pressure rice cooker bubble breaker with secondary pressurization according to claim 2, characterized in that... The high-pressure hole (5) is located on the upper side wall of the lower float valve (8). When the lower float valve (8) is not pushed up by high pressure, the high-pressure hole (5) is blocked by the inner wall of the installation channel.

4. The micro-pressure rice cooker bubble breaker with secondary pressurization according to claim 2, characterized in that... The high-pressure port (5) is located at the bottom of the valve body (1), and a pressure seal (10) for blocking or opening the high-pressure port (5) is installed at the bottom of the valve body (1).

5. The micro-pressure rice cooker bubble breaker with secondary pressurization according to claim 2, characterized in that... The lower end of the lower float valve (8) is equipped with a first limit ring (11).

6. The micro-pressure rice cooker bubble breaker with secondary pressurization according to claim 1, characterized in that... The valve housing (1) is composed of a lower housing (12) and an upper housing (13), which are connected by a locking structure.

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