Rice feeding mechanism and cooking utensil thereof

By designing a rice dispensing mechanism, the cooking appliance can automatically measure and dispense rice, solving the inconvenience of manual rice measurement, improving operational convenience and cooking efficiency, ensuring accurate rice measurement, and reducing rice spillage and resource waste.

CN223569168UActive Publication Date: 2025-11-21CHUNMI TECHNOLOGY (SHANGHAI) CO LTD
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Patent Information

Application Number
CN202422971926.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-02
Publication Date
2025-11-21
Estimated Expiration
2034-12-02

AI Technical Summary

Technical Problem

Existing cooking appliances lack rice storage and measuring functions, requiring manual measurement and addition of rice before cooking, which is inconvenient and unhygienic.

Method used

Design a rice dispensing mechanism, including a rice bin, a metering component, and a valve component. Through the cooperation of the rotating unit and the valve component, automatic metering and dispensing of rice can be achieved, ensuring the accuracy and hygiene of each dispensing.

Benefits of technology

It reduces the need for manually adding rice, improves ease of use and cooking consistency, ensures accurate rice measurement, reduces rice spillage and waste, and enhances overall cooking efficiency and hygiene.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a rice feeding mechanism which is used for feeding rice into a pot body and comprises a rice bin, a metering assembly and a valve assembly, the metering assembly is located on the lower portion of the rice bin, the metering assembly is provided with an index plate, a rotating unit and a rice outlet channel, the index plate is provided with at least one metering bin, and the rice outlet channel is arranged on the lower portion of the metering assembly. The valve assembly is arranged on a first rice outlet of the rice outlet channel, then the rotating unit drives the measuring bin of the index plate to receive rice from the rice bin, when the rotating unit rotates to be communicated with the rice outlet channel, the rice outlet channel receives rice from the measuring bin, and the valve assembly is opened to enable the rice outlet channel to discharge rice into the pot body. The rice bin is used for storing rice, the rotating unit in the metering assembly is used for rotating the index plate to enable the metering bin to receive the rice in the rice bin or transfer the rice in the metering bin to the rice outlet channel so as to achieve metering and rice discharging, the precision of rice discharging every time is guaranteed, and the valve assembly is matched to open the rice outlet channel to discharge the rice. The rice does not need to be manually measured and added into a cooking utensil.
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Description

TECHNICAL FIELD

[0001] The utility model relates to cooking utensil technical field, especially a kind of rice mechanism and its cooking utensil. BACKGROUND

[0002] Kitchen cooking utensil, as indispensable utensil in modern family kitchen, its diversified processing mode such as steaming, boiling, stewing, baking, stewing etc. greatly enriches people's diet life. With the improvement of people's living standards, the requirement of electric rice cooker cooking efficiency and rice quality is increasing.

[0003] The control mode of intelligent electric rice cooker sold in market is upgraded from mechanical type to computer control mode, and the function is more and more, part has reservation function, that is, people set the cooking time, and the electric rice cooker is cooked on time according to the specified time controlled by microcomputer, although this electric rice cooker can meet the needs of some office workers within a certain range, but there are some deficiencies, without rice storage and rice measuring function, before cooking, rice needs to be measured and added manually. INVENTION CONTENTS

[0004] The main purpose of the utility model is to provide a kind of rice mechanism and its cooking utensil, to solve the problem that cooking utensil does not have rice storage and rice measuring function, before cooking, rice needs to be measured and added manually.

[0005] To achieve the above-mentioned purpose, the utility model provides a kind of rice mechanism, for rice to the pot, including rice storehouse, metering assembly and valve assembly, the metering assembly is located in the lower part of the rice storehouse, the metering assembly is provided with index plate, rotating unit, rice outlet channel, at least one metering bin is provided on the index plate, the rice outlet channel is arranged in the lower part of the metering assembly, the valve assembly is arranged on the first rice outlet of the rice outlet channel, and then the rotating unit drives the metering bin of the index plate to receive rice from the rice storehouse, when the rotating unit rotates the metering bin and the rice outlet channel is connected, the rice outlet channel receives rice from the metering bin, and the valve assembly is opened to allow the rice outlet channel to discharge rice into the pot.

[0006] In an embodiment, the rice mechanism further includes a driving assembly that moves the valve assembly to open or close the first rice outlet.

[0007] In an embodiment, the valve assembly includes a compression cylinder, a spring, a switch valve body and a limiting portion, the compression cylinder is sleeved on the rice outlet channel, the spring is sleeved on the switch valve body and is arranged between the compression cylinder and the limiting portion, the switch valve body is located in the lower part of the compression cylinder, the outer side of the compression cylinder is provided with a connecting portion, the driving assembly is connected with the connecting portion, and the driving assembly is used to drive the compression cylinder to move upward or downward through the connecting portion to close or open the switch valve body.

[0008] In an embodiment, the index plate is provided with an index support and an index piece, the index piece is arranged in the index support, the rice bin is provided with a second rice outlet, the index piece is connected with the rotating unit, the rotating unit drives the index plate to rotate to align the metering bin with the second rice outlet and then align the rice outlet channel.

[0009] In an embodiment, the rice bin is provided with a clamping part, the index support is provided with a buckle, the index support is fixed with the rice bin by screwing the buckle into the clamping part.

[0010] In an embodiment, the buckle is provided with a clamping groove and a slope, the clamping part is provided with a positioning part and a sliding groove, the sliding groove is provided with a protrusion, when the buckle extends into the positioning part and screws into the sliding groove, the protrusion abuts against the slope and slides into the clamping groove.

[0011] In an embodiment, the lower rice mechanism includes a mounting rack, the mounting rack is located at the lower part of the metering assembly, the index piece is provided with a sensing block, the mounting rack is provided with a detection sensor for sensing the sensing block.

[0012] In an embodiment, the mounting rack is provided with a guide part, the guide part is located between the rice outlet channel and the pressing cylinder.

[0013] In an embodiment, the bottom of the cavity in the rice bin is curved.

[0014] The utility model also proposes a kind of cooking utensil, the cooking utensil is electric rice cooker, the cooking utensil includes boiler body and the lower rice mechanism, the lower rice mechanism is located above the boiler body.

[0015] The utility model realizes rice storage by rice bin, realizes metering rice by rotating index plate of rotating unit in metering assembly to make metering bin receive rice in rice bin or transfer rice in metering bin to rice outlet channel, ensure the precision of each time rice, cooperate valve assembly to open the rice outlet channel to discharge rice, without artificial metering and rice adding into cooking utensil. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawings needed to be used in embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained from the structure shown in these drawings without creative labor.

[0017] Figure 1 is the exploded view of cooking utensil;

[0018] Figure 2 A schematic diagram of the metering components;

[0019] Figure 3 A schematic diagram of a rice warehouse;

[0020] Figure 4 Another schematic diagram of a rice warehouse;

[0021] Figure 5 This is a cross-sectional view of a rice granary.

[0022] Figure 6 A first cross-sectional view of the cooking utensil;

[0023] Figure 7 This is a second cross-sectional view of the cooking utensil;

[0024] Figure 8 for Figure 7 A magnified view of part A in the image;

[0025] Figure 9 This is a third cross-sectional view of the cooking utensil.

[0026] Figure 10 for Figure 9 A magnified view of part B in the image;

[0027] Figure 11 This is a schematic diagram of a valve assembly.

[0028] Explanation of icon numbers:

[0029] 1-Metering component, 11-Rotating unit, 12-Indexing plate, 121-Indexing bracket, 1211-Snap fastener, 12111-Slot, 12112-Chamfer, 122-Indexing component, 1221-Metering chamber, 13-Rice outlet channel, 131-First rice outlet, 2-Rice chamber, 21-Second rice outlet, 22-Snap-fit ​​part, 221-Protrusion, 222-Positioning part, 223-Slide groove, 23-Cavity, 24-Rib, 231-Curved surface, 3-Drive component, 4-Valve component, 41-Pressure cylinder, 411-Connecting part, 42-Spring, 43-Switch valve body, 44-Limiting part, 5-Mounting bracket, 51-Detection sensor, 52-Guide part, 53-Allowing hole, 6-Boiler body.

[0030] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] With reference to the drawings and the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0032] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0033] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel schemes. Taking "A and / or B" as an example, it includes A scheme, or B scheme, or A and B schemes. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0034] As shown in Figure 1 , Figure 2 , Figure 6 , Figure 1 is an exploded view of the cooking utensil, Figure 2 is a schematic view of the metering assembly, Figure 6For the first cross-sectional view of the cooking utensil, the utility model provides a rice feeding mechanism for feeding rice into the pot body, which comprises a rice bin 2, a metering assembly 1 and a valve assembly 4. The metering assembly 1 is located at the lower part of the rice bin 2. The metering assembly 1 is provided with a dividing disc 12, a rotating unit 11 and a rice outlet channel 13. At least one metering bin 1221 is arranged on the dividing disc 12. The rice outlet channel 13 is arranged at the lower part of the metering assembly 1. The valve assembly 4 is arranged on the first rice outlet 131 of the rice outlet channel 13. The first rice outlet 131 is located at the bottom of the rice outlet channel 13. The rotating unit 11 drives the metering bin 1221 of the dividing disc 12 to receive rice from the rice bin 2. When the rotating unit 11 rotates the metering bin 1221 to be in communication with the rice outlet channel 13, the rice outlet channel 13 receives rice from the metering bin 1221. The valve assembly 4 is opened to feed the rice in the rice outlet channel 13 into the pot body.

[0035] As shown in Figure 1 , the rice feeding mechanism realizes rice storage through the rice bin 2. The rotating unit 11 in the metering assembly 1 rotates the dividing disc 12 to make the metering bin 1221 receive rice in the rice bin 2 and transfer the rice in the metering bin 1221 to the rice outlet channel 13, thereby achieving the metering effect and ensuring the accuracy of rice feeding each time. In combination with the opening of the valve assembly 4 to feed rice, manual rice measuring and feeding into the cooking utensil are not required.

[0036] The rice feeding mechanism reduces the step of manually adding rice, improves the convenience of use, and allows the user to simply set the cooking utensil. The rice feeding mechanism can automatically feed rice according to the preset rice amount, ensures the accuracy of the required rice amount for each cooking, and improves the consistency of cooking. The rice feeding mechanism reduces the amount of rice spilling and waste through accurate control of the rice feeding amount, thereby ensuring the effective use of resources. The rice feeding mechanism reduces the direct contact of the user during operation, thereby maintaining the hygiene of the operation process. The rice feeding mechanism makes the rice feeding process faster, and the user can complete the rice feeding while preparing other ingredients, thereby improving the overall cooking efficiency.

[0037] In this embodiment, four metering bins 1221 with an adjacent included angle of 90° are arranged on the dividing disc 12. The metering bin 1221 is a circular hole cavity 23 or a square hole cavity 23. The shape of the metering bin 1221 is not limited and any suitable shape can be designed as the metering bin 1221.

[0038] First specific embodiment

[0039] As shown in Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 7 , it is the second cross-sectional view of the cooking utensil; Figure 8 is Figure 7 the enlarged view of A in FIG. 4.Figure 9 Figure 3 is a third cross-sectional view of the cooking appliance; Figure 10 Figure 4 is a schematic view of the cooking appliance; Figure 9 Figure 5 is a partial enlarged view of the B in Figure 4, Figure 7 Figure 6 is a schematic view of the cooking appliance, Figure 8 Figure 7 is a schematic view of the cooking appliance, Figure 9 Figure 8 is a schematic view of the cooking appliance, Figure 10 The lower rice mechanism further comprises a driving assembly 3, which drives the valve assembly 4 to move to open or close the first rice outlet 131. The valve assembly 4 comprises a pressing cylinder 41, a spring 42, a switch valve body 43, and a limiting portion 44. The pressing cylinder 41 is sleeved on the rice outlet 13. The spring 42 is sleeved on the switch valve body 43 and is arranged between the pressing cylinder 41 and the limiting portion 44. The switch valve body 43 is located at the lower part of the pressing cylinder 41. The outer side of the pressing cylinder 41 is provided with a connecting portion 411. The driving assembly 3 is connected with the connecting portion 411. The driving assembly 3 is used to drive the pressing cylinder 41 to move upward or downward through the connecting portion 411 to close or open the switch valve body 43.

[0040] The pressing cylinder 41 is mainly responsible for applying pressure to push the switch valve body 43 to move. When the cooking appliance needs to open or close the rice outlet 13, the pressing cylinder 41 controls the opening and closing state of the switch valve body 43 through the driving assembly 3. The spring 42 plays a role of resetting in the valve assembly 43. When the valve assembly 4 is closed, the elastic force of the spring 42 ensures that the switch valve body 43 can quickly return to the initial position. This design helps to prevent the switch valve body 43 from being accidentally opened when it is not needed, thereby ensuring the safety and stability of the system. The switch valve body 43 is the core component of the valve assembly 4, which is responsible for controlling the opening or closing of the rice outlet 13 of the lower rice mechanism. The limiting portion 44 ensures that the switch valve body 43 does not exceed the predetermined stroke when it is opened or closed, preventing damage to the valve assembly 4. The design of the limiting portion 44 helps to improve the service life of the valve assembly 4 and ensures its reliability during operation.

[0041] When the driving assembly 3 drives the pressing cylinder 41 to move downward through the connecting portion 411, the switch valve body 43 is pressed downward, and the spring 42 located between the pressing cylinder 41 and the limiting portion 44 is extruded. When the driving assembly 3 drives the pressing cylinder 41 to move upward through the connecting portion 411, the switch valve body 43 moves upward, and the spring 42 located between the pressing cylinder 41 and the limiting portion 44 is reset. The spring 42 is used to adjust the opening and closing of the valve assembly 4, ensuring that the cooking appliance works under appropriate pressure.

[0042] Second embodiment

[0043] The index plate 12 is provided with an index support 121 and an index piece 122, the index piece 122 is placed in the index support 121, the rice bin 2 is provided with a second rice outlet 21, the index piece 122 is connected with the rotating unit 11, the rotating unit 11 drives the index plate 12 to rotate to align the metering bin 1221 with the second rice outlet 21 and then align the rice outlet channel 13. The diameter of the rice bin 2 is greater than or equal to the diameter of the second rice outlet 21. The rice discharging mechanism includes a mounting frame 5, the mounting frame 5 is located at the lower part of the metering assembly 1, the index piece 122 is provided with a sensing block (not shown in the figure), the sensing block can be arranged on the side wall of the index piece 122 or inside the side wall of the index piece 122, and the mounting frame 5 is provided with a detection sensor 51 for sensing the sensing block 122.

[0044] The design of the index piece 122 enables the user to easily select and adjust the amount of rice without manual weighing, the operation is simple and intuitive, and the user experience is improved; the index support 121 provides stable support for the index piece 122, so that the index piece 122 does not shake or deviate during operation, and the accurate delivery of rice is ensured; in combination with the rotating unit 11, the index plate 12 can realize the automatic delivery of rice, reduce manual intervention, improve the cooking efficiency, and adapt to the trend of modern intelligent household appliances.

[0045] In operation, the rotating unit 11 drives the index piece 122 to rotate, when the detection sensor 51 detects the sensing block for the first time, the cooking appliance program is set to a reset state; when the detection sensor 51 detects the sensing block for the second time, the index piece 122 completes a rotation period, and in this process, the rice fills the four metering bins 1221 under its own gravity; after receiving the signal, the driving assembly 3 drives the pressing block to sink and open the switch valve body 43, so that the rice enters the pot. The rice discharging mechanism can accurately deliver the required amount of rice according to the preset rice-water ratio. The cooking appliance receives the feedback information of the detection sensor 51 and adjusts the delivery amount of rice in real time, so as to ensure that the rice cooked each time reaches the best taste.

[0046] Third embodiment

[0047] As Figure 11 shown, Figure 11As shown in the schematic diagram of the valve assembly, the rice bin 2 is provided with a clamping portion 22, and the index support 121 is provided with a buckle 1211. The index support 121 is fixed with the rice bin 2 by screwing the buckle 1211 into the clamping portion 22. A ring of protruding surrounding bones 24 is arranged below the rice bin 2, and the clamping portion 22 is arranged on the surrounding bones 24. The clamping portion 22 is used to fix the index support 121 and the surrounding bones 24. In this embodiment, two buckles 1211 are arranged on the outer side of the index support 121, and the buckles 1211 are matched with the clamping portion 22 and fixed by screwing. The buckle 1211 is provided with a clamping groove 12111 and a slope 12112, the clamping portion 22 is provided with a positioning portion 222 and a sliding groove 223, the sliding groove 223 is provided with a protrusion 221, and when the buckle 1211 is screwed into the positioning portion 222 and the sliding groove 223, the protrusion 221 abuts against the slope 12112 and slides into the clamping groove 12111.

[0048] The combination of the clamping portion 22 and the buckle 1211 provides a firm connection, ensures the stability between the surrounding bones 24 and the index support 121, and prevents loosening or falling off during use. The rice bin 2 and the index support 121 can be quickly disassembled and reinstalled, making the maintenance and storage of the cooking appliance more convenient. The clamping portion 22 can distribute the force applied on the surrounding bones 24, enhancing the overall carrying capacity of the cooking appliance. The clamping portion 22 is provided with the positioning portion 222, making the installation of the index support 121 and the rice bin 2 more accurate. The sliding groove 223 makes it easier for the buckle 1211 to be screwed into the clamping portion 22, and has a certain guiding effect. The slope 12112 also has a certain power guiding effect, which slides the protrusion 221 into the clamping groove 12111, so that the buckle 1211 is fixed with the clamping portion 22. The design of the clamping portion 22 and the buckle 1211 allows for certain adjustment space, and good clamping design can reduce vibration during use, improve the stability and working efficiency of the equipment.

[0049] Fourth embodiment

[0050] The mounting bracket 5 is provided with a guide portion 52 located between the rice outlet channel 13 and the pressing cylinder 41. The guide portion 52 is funnel-shaped with the upper part larger than the lower part. The funnel-shaped guide portion 52 makes it more convenient for rice to fall into the first rice outlet 131. Opening the switch valve body 43 can guide the rice into the pot, reducing spilling and waste. The funnel shape can effectively guide the flow of rice, making it flow smoothly into the pot and avoiding blockage or jamming. Through the funnel shape, the rice can be more evenly distributed at the bottom of the pot, ensuring uniform heating during cooking and improving the cooking effect. It avoids spilling rice onto other structural components, reduces cleaning work, and improves the user experience. Figure 6 As shown in the schematic diagram of the valve assembly, the rice bin 2 is provided with a clamping portion 22, and the index support 121 is provided with a buckle 1211. The index support 121 is fixed with the rice bin 2 by screwing the buckle 1211 into the clamping portion 22. A ring of protruding surrounding bones 24 is arranged below the rice bin 2, and the clamping portion 22 is arranged on the surrounding bones 24. The clamping portion 22 is used to fix the index support 121 and the surrounding bones 24. In this embodiment, two buckles 1211 are arranged on the outer side of the index support 121, and the buckles 1211 are matched with the clamping portion 22 and fixed by screwing. The buckle 1211 is provided with a clamping groove 12111 and a slope 12112, the clamping portion 22 is provided with a positioning portion 222 and a sliding groove 223, the sliding groove 223 is provided with a protrusion 221, and when the buckle 1211 is screwed into the positioning portion 222 and the sliding groove 223, the protrusion 221 abuts against the slope 12112 and slides into the clamping groove 12111.Figure 6 This is a first cross-sectional view of the cooking appliance. The guide part 52 and the first rice outlet 131 form a rice outlet channel 13, and the direction of rice falling is as follows: Figure 6 As indicated by the arrow. Both the rotating unit 11 and the drive assembly 3 are fixed on the mounting bracket 5. The rotating unit 11 can be a motor or other components.

[0051] The mounting bracket 5 is provided with clearance holes 53, and part of the drive assembly 3 is located in the clearance holes 53. In this embodiment, the drive assembly 3 can be a lifting device or other drive components. The clearance holes 53 allow the drive assembly 3 a certain amount of movement space when the arm swings; during the operation of the drive assembly 3, the clearance holes 53 can prevent the drive assembly 3 from interfering with other components, reduce friction and wear, and ensure the normal operation of the drive assembly 3; the clearance holes 53 can absorb the vibration generated during the operation of the drive assembly 3 to a certain extent, reduce the impact on the mounting bracket 5 and other components, and improve the overall stability of the cooking appliance.

[0052] like Figure 3 , Figure 4 , Figure 5 As shown, Figure 3 This is a schematic diagram of a rice warehouse. Figure 4 Here is another schematic diagram of a rice warehouse. Figure 5 This is a cross-sectional view of the rice storage bin. In addition, the bottom of the cavity 23 in the rice storage bin 2 is a curved surface 231. The rice bin 2 has a capacity of 3-5 liters, meeting the needs of multi-person households. The capacity of the rice bin 2 can be adjusted according to actual needs. The rice bin 2 can be used to hold rice or mixed grains. The inner surface of the rice bin 2 is smooth, and the bottom of the cavity 23 is a curved surface 231 that slopes in the same direction on all sides. The curved surface 231 converges into the through rice outlet channel 13, which is equipped with a second rice outlet 21. The rice in the rice bin 2 can fall into the rice outlet channel 13 under its own weight, reducing the retention of rice at the bottom of the cavity 23 and improving the efficiency of rice dispensing. The curved surface 231 design helps the rice to be evenly distributed in the bin, avoiding aggregation, thus ensuring a more consistent amount of rice each time. Compared with a flat surface, the curved surface 231 can reduce the probability of blockage during rice dispensing, ensuring the smooth operation of the rice bin 2. The curved surface 231 can also reduce the possibility of rice residue at the bottom, helping to keep the rice bin 2 clean.

[0053] The utility model discloses still provide a kind of cooking utensil, the cooking utensil is electric rice cooker, the cooking utensil includes boiler body 6 and the rice mechanism, the rice mechanism is located above the boiler body 6, the specific structure of this rice mechanism refers to above-mentioned embodiment, since the cooking utensil has adopted all technical solutions of above-mentioned all embodiments, therefore at least have all beneficial effects brought by the technical scheme of above-mentioned embodiment, here no longer repeat one by one.In this embodiment, cooking utensil is prepared to cook rice by opening valve assembly 4, rice falls from rice outlet channel 13 to boiler body 6, starts next step.

[0054] The above-mentioned is only optional embodiment of the utility model, and does not limit the patent range of the utility model, and equivalent structural transformation is made in the utility model concept of the utility model, using the utility model specification and the contents of drawings, or direct / indirectly applied in other related technical fields are included in the patent protection range of the utility model.

Claims

1. A rice-feeding mechanism for feeding rice into a pot, characterized in that, The lower rice mechanism comprises a rice bin, a metering assembly and a valve assembly, the metering assembly is arranged at the lower part of the rice bin, the metering assembly is provided with a indexing disc, a rotating unit and a rice outlet channel, at least one metering bin is arranged on the indexing disc, the rice outlet channel is arranged at the lower part of the metering assembly, the valve assembly is arranged at the first rice outlet of the rice outlet channel, the rotating unit drives the metering bin of the indexing disc to receive rice from the rice bin, and when the rotating unit rotates the metering bin to be in communication with the rice outlet channel, the rice outlet channel receives rice from the metering bin, and the valve assembly is opened to allow the rice outlet channel to discharge rice into a pot.

2. The down-conversion mechanism of claim 1, wherein, The lower rice mechanism further comprises a driving assembly, which drives the valve assembly to move to open or close the first rice outlet.

3. The down-conversion mechanism of claim 2, wherein, The valve assembly comprises a pressing cylinder, a spring, a switch valve body and a limiting part, the pressing cylinder is sleeved on the rice outlet channel, the spring is sleeved on the switch valve body and arranged between the pressing cylinder and the limiting part, the switch valve body is arranged at the lower part of the pressing cylinder, the outer side of the pressing cylinder is provided with a connecting part, the driving assembly is connected with the connecting part, and the driving assembly is used to drive the pressing cylinder to move upward or downward through the connecting part to close or open the switch valve body.

4. The down-conversion mechanism of claim 3, wherein, The indexing disc is provided with an indexing bracket and an indexing piece, the indexing piece is arranged in the indexing bracket, the rice bin is provided with a second rice outlet, the indexing piece is connected with the rotating unit, and the rotating unit drives the indexing disc to rotate to align the metering bin with the second rice outlet and then with the rice outlet channel.

5. The down-conversion mechanism of claim 4, wherein, The rice bin is provided with a clamping part, the indexing bracket is provided with a buckle, and the indexing bracket is fixed with the rice bin by rotating the buckle into the clamping part.

6. The down-conversion mechanism of claim 5, wherein, The buckle is provided with a clamping groove and an inclined surface in connection, the clamping part is provided with a positioning part and a sliding groove in connection, the sliding groove is provided with a protrusion, and when the buckle extends into the positioning part and rotates into the sliding groove, the protrusion abuts against the inclined surface and slides into the clamping groove.

7. The down-conversion mechanism of claim 4, wherein, The lower rice mechanism comprises a mounting bracket, the mounting bracket is arranged at the lower part of the metering assembly, the indexing piece is provided with a sensing block, and the mounting bracket is provided with a detection sensor for sensing the sensing block.

8. The down-conversion mechanism of claim 7, wherein, The mounting bracket is provided with a guide part between the rice outlet channel and the pressing cylinder.

9. The down-conversion mechanism of claim 1, wherein, The bottom of the cavity in the rice bin is a curved surface.

10. A cooking appliance characterized by, The cooking appliance is an electric rice cooker, and the cooking appliance comprises a cooker body and the lower rice mechanism according to any one of claims 1-9, and the lower rice mechanism is arranged above the cooker body.