Electric lunch box and control method thereof

The electric rice cooker with a lift mechanism and drainage hole separates rice and broth, addressing the unsatisfactory rice issues in traditional models by reducing starch content and enabling separate broth use.

CN120304631APending Publication Date: 2025-07-15GREE (CHENGDU) ELECTRIC APPLIANCES CO LTD +1
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Patent Information

Application Number
CN202510643010.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-19
Publication Date
2025-07-15

AI Technical Summary

Technical Problem

The existing lunch boxes cannot effectively separate rice and rice soup, resulting in excessive starch content of rice or the rice soup cannot be used alone.

Method used

An electric lunch box is designed, including a lifting device and a drainage hole. The inner liner can rise or fall under the drive of the lifting device. When the drainage hole rises, the rice soup flows out and the rice soup flows into the soup storage cavity to achieve the separation between the rice soup and the rice.

Benefits of technology

The effective separation of rice soup and rice is achieved, the starch content in rice is reduced, and the needs of different users can be met. Rice soup can be used alone.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses an electric lunch box and a control method thereof, and belongs to the field of electric lunch boxes. The electric lunch box comprises an upper cover, a base and an inner container, the upper cover and the base form a closed cavity, the inner container is located in the closed cavity, and the electric lunch box further comprises a lifting device; the lifting device is used for lifting the inner container to a preset position from the base and / or descending the inner container into the base from the preset position; a drainage hole is formed in the inner container; when the inner container does not rise, rice water cannot flow out of the water drainage hole; when the inner container ascends, rice water flows out of the drainage hole. In this way, when rice and water need to be separated, the inner container is controlled to rise, the rice and water can flow out of the inner container, the separation effect is achieved, and the requirements of users are met.
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Description

Technical Field

[0001] This application relates to the technical field of rice cookers, and particularly to a rice cooker and its control method. Background Art

[0002] A rice cooker is a commonly used household appliance. Most traditional rice cookers use a heating element to generate high-temperature steam inside the rice cooker to achieve the purpose of heating and keeping warm after being powered on. It can only be used for heating or keeping warm and cannot be used for steaming. With the increase in people's needs, the functions of existing rice cookers are gradually increasing, and the steaming function has been added.

[0003] When using the steaming function of an existing rice cooker, the user puts the rice into the inner pot and then heats it through the heating element to achieve steaming, which is similar to a conventional rice cooker. However, in actual use, the user needs to separate the rice and the soup in the inner pot. For example, if the user adds too much water and does not separate them, the final cooked rice will not meet the user's requirements. Another example is that since some amylopectin is dissolved in the rice soup, the glycemic index (GI value) of the rice is relatively high. Therefore, some people need to reduce the starch content in the rice, that is, they need to separate the rice soup; or some people can only drink the rice soup temporarily, and the existing rice cookers cannot separate them. Summary of the Invention

[0004] To overcome the deficiencies of the prior art, this application provides a rice cooker and its control method to solve the problem that the existing rice cooker cannot separate the rice soup from the rice.

[0005] The technical solution adopted by this application to solve its technical problems is as follows:

[0006] In a first aspect, a rice cooker is provided, including: an upper cover, a base, and an inner pot. The upper cover and the base form a sealed cavity, and the inner pot is located in the sealed cavity. It further includes: a lifting device;

[0007] The lifting device is used to lift the inner pot from the base to a preset position;

[0008] The inner pot is provided with a drain hole;

[0009] When the inner pot is not lifted, the rice soup cannot flow out of the drain hole; when the inner pot is lifted, the rice soup flows out of the drain hole.

[0010] As a preferred implementation of this application, the drain hole is provided at the bottom of the inner pot. When the inner pot is lifted, the rice soup flows from the drain hole into the base.

[0011] As a preferred implementation of this application, it further includes: a soup storage cavity;

[0012] The soup storage cavity is arranged in the base;

[0013] When the inner pot rises, the rice soup flows into the soup storage cavity through the drain hole.

[0014] As a preferred implementation manner of the present application, the lifting device includes a motor and a transmission structure;

[0015] The motor drives the inner pot to rise or fall through the transmission structure.

[0016] As a preferred implementation manner of the present application, the transmission structure includes a gear and a rack;

[0017] The gear is connected to the motor rotating shaft; when the motor rotates, the gear rotates;

[0018] The gear is meshed and connected with the rack; when the gear rotates, the rack rises or falls;

[0019] The rack is connected to the inner pot. When the rack rises, the inner pot rises; when the rack falls, the inner pot falls.

[0020] As a preferred implementation manner of the present application, it further includes: a heating device;

[0021] The heating device is arranged on the inner pot.

[0022] As a preferred implementation manner of the present application, it further includes: a heating device;

[0023] The heating device is arranged on the base.

[0024] As a preferred implementation manner of the present application, it further includes: a steaming rack;

[0025] The steaming rack is located in the sealed cavity;

[0026] The steaming rack is located above the inner pot.

[0027] As a preferred implementation manner of the present application, it further includes: a lunch box;

[0028] The lunch box is located in the sealed cavity;

[0029] The lunch box is located above the inner pot.

[0030] As a preferred implementation manner of the present application, it further includes: a lunch box cover and a sealing ring;

[0031] The lunch box cover matches the lunch box;

[0032] The sealing ring is used to form a sealed space between the lunch box cover and the lunch box.

[0033] On the other hand, a rice cooker box control method is provided, which is applied to the above-mentioned rice cooker box. The method includes:

[0034] After receiving the separation instruction, if a preset condition is triggered, control the inner pot to rise at a preset rate.

[0035] As a preferred implementation manner of the present application, it further includes:

[0036] After starting to run for a preset duration, trigger the preset condition.

[0037] As a preferred implementation manner of the present application, it further includes:

[0038] Obtain the water level in the inner pot when the preset condition is triggered, and determine the preset rate based on the water level. The higher the water level, the faster the rising rate.

[0039] As a preferred implementation manner of the present application, it further includes:

[0040] When it is detected that the water level in the inner pot reaches the preset water level, trigger the preset condition.

[0041] Beneficial effects:

[0042] The technical solution of the present application provides a rice cooker box and its control method. The rice cooker box includes: an upper cover, a base, and an inner pot. The upper cover and the base form a sealed cavity, and the inner pot is located in the sealed cavity. It further includes: a lifting device; the lifting device is used to lift the inner pot from the base to a preset position, and / or, to lower the inner pot from the preset position into the base; a drainage hole is provided on the inner pot; when the inner pot is not lifted, the rice soup cannot flow out from the drainage hole; when the inner pot is lifted, the rice soup flows out from the drainage hole. In this way, when rice soup separation is required, control the inner pot to rise, and the rice soup can flow out from the inner pot, achieving the separation effect and meeting the user's needs. Description of the Drawings

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0044] Figure 1 It is a schematic exploded view of a traditional rice cooker box provided by an embodiment of the present application;

[0045] Figure 2 It is a schematic exploded view of a rice cooker box provided by an embodiment of the present application;

[0046] Figure 3It is a kind provided by an embodiment of the present application Figure 2 Schematic diagram of the structure of the inner liner;

[0047] Figure 4 Schematic diagram of the structure of an upper cover with a handle provided by an embodiment of the present application;

[0048] Figure 5 Flowchart of a rice cooker control method provided by an embodiment of the present application;

[0049] Figure 6 Control logic diagram of a rice cooker provided by an embodiment of the present application.

[0050] Explanation of reference numerals:

[0051] 1 - Upper cover; 2 - Inner liner; 3 - Base; 4 - Drain hole; 5 - Motor; 6 - Gear; 7 - Rack; 8 - Steaming rack; 9 - Food container; 10 - Food container lid, 11 - Sealing ring, 12 - Handle. Detailed implementation manners

[0052] To make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below with reference to the drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope protected by the present application.

[0053] Traditional rice cookers are as Figure 1 shown, including an upper cover 1, an inner liner 2 and a base 3. The inner liner 2 is used for cooking rice or rice soup. The base 3 is provided with a heating device (not shown in the figure) for heating. It also includes a steaming rack 8 and a food container 9. The steaming rack 8 is used for placing food or the food container 9. The food container 9 is used for holding food. In order to ensure the hygiene of the food in the food container 9, a food container lid 10 and a sealing ring 11 are also provided.

[0054] However, when traditional rice cookers cook rice, they cannot separate the rice soup to meet the needs of users.

[0055] To solve this problem, referring to Figure 2 , an embodiment of the present application provides a rice cooker, including: an upper cover 1, a base 3 and an inner liner 2. The upper cover 1 and the base 3 form a sealed cavity, and the inner liner 2 is located in the sealed cavity. It further includes: a lifting device;

[0056] The lifting device is used to lift the inner liner 2 from the base 3 to a preset position;

[0057] The inner liner 2 is provided with a drain hole 4;

[0058] When the inner pot 2 does not rise, the rice soup cannot flow out of the drain hole 4; when the inner pot 2 rises, the rice soup flows out of the drain hole 4.

[0059] It should be noted that the lifting device of the present application can only provide the function of lifting the inner pot 2 from the base 3 to a preset position. For restoring the inner pot 2 from the preset position to the base 3, it may not rely on the lifting device. For example, the user manually pushes the inner pot 2 back into the base 3.

[0060] Of course, as a preferred implementation manner of the present application, the inner pot 2 is restored from the preset position to the base 3 through the lifting device. Specifically:

[0061] When a descent instruction is received, the inner pot 2 is restored from the preset position to the base 3 through the lifting device.

[0062] In some embodiments, a descent button or a restoration button is provided on the rice cooker box. The user sends a descent instruction by pressing the descent button or the restoration button. That is, the embodiment of the present application is a manual restoration.

[0063] In other embodiments, when it is detected that there is no rice in the inner pot 2 or there is no rice soup in the base 3, a descent instruction is generated. That is, the embodiment of the present application is an automatic restoration. Because if there is still rice in the inner pot 2 and there is rice soup in the base 3, the descent of the inner pot 2 will cause the rice soup to re-integrate into the rice, affecting the taste of the rice and increasing the starch content in the rice. Therefore, it is necessary to ensure that there is no rice in the inner pot 2 or there is no rice soup in the base 3. Even in some special scenarios, a descent instruction is generated only when it is detected that there is no rice in the inner pot 2 and there is no rice soup in the base 3.

[0064] In one embodiment, a valve is provided at the drain hole 4. When the inner pot 2 rises, the valve opens and the rice soup can flow out of the drain hole 4. The valve can be a baffle provided outside the inner pot 2. When the rice soup does not need to flow out of the drain hole 4, the baffle blocks the drain hole 4. When the rice soup needs to flow out of the drain hole 4, the baffle no longer blocks the drain hole 4.

[0065] Furthermore, it further includes: a soup storage cavity;

[0066] The soup storage cavity is arranged in the base 3;

[0067] When the inner pot 2 rises, the rice soup flows from the drain hole 4 into the soup storage cavity.

[0068] The traditional heating device is arranged on the base 3. If the rice soup flows out from the drain hole 4 and directly flows into the base 3, it may affect the heating function of the heating device. Therefore, in the embodiment of the present application, a separate cavity is arranged on the base 3 to accommodate the rice soup flowing out from the drain hole 4. In this way, the heating ability of the heating device is not affected. In order to ensure that the rice soup can flow into the soup storage cavity when flowing out from the drain hole 4, in addition to the position of the drain hole 4 corresponding to that of the soup storage cavity. In order to avoid the opposite placement position of the inner container 2 during use, resulting in the position of the drain hole 4 no longer corresponding to that of the soup storage cavity, a limiting mechanism can be arranged on the inner container 2 and the base 3 (for example, a limiting protrusion is arranged on one side of the inner container 2, and a limiting groove is arranged at the corresponding position on the base 3. When the inner container 2 is placed in the base 3, the limiting protrusion must be placed in the limiting groove before the inner container 2 can be placed in the base 3, that is, it can ensure the corresponding position of the drain hole 4 and the soup storage cavity, and also ensure the stability when the inner container 2 is placed in the base 3), so that the inner container 2 can only be installed on the base 3 at a fixed angle.

[0069] In another embodiment, as Figure 3 shown, the drain hole 4 is arranged at the bottom of the inner container 2 (it can be the bottom of the side or the bottom of the bottom edge, Figure 2 and Figure 3 what is shown in is the bottom of the side). When the inner container 2 rises, the rice soup flows from the drain hole 4 into the base 3. That is, in the embodiment of the present application, the base 3 is used as a baffle. When the inner container 2 does not rise, the base 3 and the inner container 2 are closely attached, so there is no space to accommodate the rice soup, and the rice soup cannot flow out from the drain hole 4. When the inner container 2 rises, a space appears between the base 3 and the inner container 2, and the rice soup flows out from the drain hole 4 into the base 3 due to gravity. No other structure is required, which is simple and convenient, and has low cost.

[0070] In this embodiment, if the traditional heating device setting method is adopted, that is, the heating device is arranged on the base 3, the rice soup flowing into the base 3 will affect the heating function of the heating device. Therefore, as a preferred implementation method of the embodiment of the present application, the heating device is arranged on the inner container 2, and is exemplarily arranged at the bottom of the inner container 2. Or arranged on the side wall of the inner container 2. The specific setting position can be set according to actual needs, and the present application does not make specific limitations.

[0071] Optionally, the lifting device adopts a cylinder.

[0072] As a preferred implementation method of the embodiment of the present application, the lifting device includes a motor 5 and a transmission structure;

[0073] The motor 5 drives the inner container 2 to rise or fall through the transmission structure.

[0074] Preferably, the transmission structure includes a gear 6 and a rack 7;

[0075] The gear 6 is connected to the rotating shaft of the motor 5; when the motor 5 rotates, the gear 6 rotates;

[0076] The gear 6 is meshed and connected with the rack 7; when the gear 6 rotates, the rack 7 rises or falls;

[0077] The rack 7 is connected to the inner container 2. When the rack 7 rises, the inner container 2 rises; when the rack 7 falls, the inner container 2 falls.

[0078] In some other embodiments, the transmission structure can also be a combination of a screw and a sleeve. The sleeve is fixed below the inner container 2 and has threads inside. The motor 5 drives the screw to move up and down in the sleeve, and when the sleeve moves up and down, it can drive the inner container 2 to move up and down.

[0079] It should be noted that, Figure 2 in the split structure of the rice cooker shown, the upper cover 1 has no special structure, which is not convenient for carrying, especially after heating, it may be hot to the touch. Therefore, as an optional implementation manner of the embodiment of the present application, as Figure 4 shown, a handle 12 is provided on the upper cover 1, which is more convenient for users to use whether moving the rice cooker as a whole or needing to move the upper cover 1 alone.

[0080] In addition, the present application also includes the conventional functions of the rice cooker. Specifically as follows:

[0081] It further includes: a steaming rack 8;

[0082] The steaming rack 8 is located in the sealed cavity;

[0083] The steaming rack 8 is located above the inner container 2.

[0084] It further includes: a lunch box 9;

[0085] The lunch box 9 is located in the sealed cavity;

[0086] The lunch box 9 is located above the inner container 2.

[0087] In some embodiments, in order to ensure the hygiene of the food in the lunch box 9, it further includes: a lunch box cover 10 and a sealing ring 11;

[0088] The lunch box cover 10 matches the lunch box 9;

[0089] The sealing ring 11 is used to form a sealed space between the lunch box cover 10 and the lunch box 9.

[0090] Among them, structures such as the steaming rack 8, the lunch box 9 and the lunch box cover 10 are common structures in traditional rice cookers, and their specific shapes and setting methods are not changed in the present application and will not be elaborated here.

[0091] It should be noted that when the inner pot 2 moves in this application, it is also within the sealed cavity formed by the upper cover 1 and the base 3. Moreover, since the overall volume of the rice cooker box is not large itself, its inner pot 2 is also relatively small (generally only enough for one person), and the amount of rice soup that needs to be separated is not much. Therefore, the height that the inner pot 2 rises is not high. The overall volume of the rice cooker box is not much different from that of traditional rice cooker boxes.

[0092] The rice cooker box provided by the embodiment of this application includes an upper cover, a base, and an inner pot. The upper cover and the base form a sealed cavity, and the inner pot is located within the sealed cavity. It further includes: a lifting device; the lifting device is used to lift the inner pot from the base to a preset position, and / or, to lower the inner pot from the preset position into the base; the inner pot is provided with a drainage hole; when the inner pot is not lifted, the rice soup cannot flow out from the drainage hole; when the inner pot is lifted, the rice soup flows out from the drainage hole. In this way, when rice soup separation is required, by controlling the inner pot to rise, the rice soup can flow out from the inner pot, achieving the separation effect and meeting the user's needs.

[0093] The embodiment of this application also provides a specific implementation of a rice cooker box. The rice soup separation rice cooker box is a kitchen appliance that separates the rice soup (rice slurry or excess water) generated during the rice cooking process through a physical method. Its core design lies in the combination of a lifting mechanism and a separation structure. The following is a detailed description of the structure and working principle:

[0094] I. Core Structure

[0095] 1. Inner pot: A container for holding rice and water, made of food-grade stainless steel or ceramic, with a drainage hole designed at the bottom;

[0096] 2. Lifting mechanism: The driving motor provides power, and the inner pot is lifted through gear transmission and gear-rack drive.

[0097] 3. Heating system: The heating method of a traditional rice cooker box with a bottom heating plate, used for cooking rice and boiling the rice and water.

[0098] 4. Rice soup separation system

[0099] 1) Drainage channel: The inner pot is provided with a drainage hole at the bottom, and the rice soup flows into the base by gravity.

[0100] 2) Base: Located at the bottom of the rice cooker box, used for storing the separated rice soup.

[0101] 5. Control system: Microcomputer chip: Controls the cooking time, temperature, and lifting timing. Sensor: Monitors the water level and temperature, and triggers the separation action.

[0102] II. Working Principle

[0103] Its process reference Figure 6 :

[0104] 1. Cooking stage

[0105] 1) Water injection and heating: The user adds rice and water into the inner pot. After starting the rice cooker, the bottom heating device heats up to boiling.

[0106] 2) Boiling and water absorption: The rice absorbs water and expands at high temperature, and rice soup gradually forms.

[0107] 2. Rice soup separation stage

[0108] 1) Lifting trigger:

[0109] Timing: When the rice is cooked to the preset time (or the moisture is detected by the sensor and reduced to the threshold), the control system starts the lifting mechanism.

[0110] Action: The motor drives the gear to slowly lift the inner pot out of the heating area.

[0111] 2) Gravity separation: After the inner pot is lifted, the rice soup flows into the base through the bottom drain hole due to gravity.

[0112] 3. Heat preservation and finishing

[0113] 1) After separation, the inner pot can remain suspended to prevent the rice from continuing to absorb water and getting mushy.

[0114] 2) The rice soup in the base can be independently drained (such as for making rice milk for drinking or discarding).

[0115] III. Key technical details:

[0116] 1. Drain hole design: The hole diameter needs to be smaller than the size of the rice grains (usually <1mm) to prevent rice grains from leaking.

[0117] 2. Sealing and leak prevention: During the lifting process, a silicone rubber ring is provided for sealing between the inner pot and the upper cover of the rice cooker to avoid leakage of steam or rice soup.

[0118] 3. Lifting speed control: Too fast may cause damage to the rice structure (for example: if it rises too fast and separates from the water, the rice will not be cooked thoroughly, commonly known as undercooked rice), and too slow will affect efficiency, which needs to be adjusted by the motor speed or reducer.

[0119] 4. Dry burning prevention protection: After separation, the heating plate automatically cuts off the power to prevent damage caused by dry burning.

[0120] The rice cooker provided by the embodiment of this application adopts a unique lifting mechanism and rice soup separation technology. The rice cooker precisely controls the lifting of the inner pot through the built-in motor. This ingenious design enables the rice cooker to achieve rice soup separation, reduce the starch content in the rice (suitable for people with diabetes or those controlling blood sugar), make the rice drier and distinct grains. The rice soup can be separately collected for cooking or beverages.

[0121] Based on the same inventive concept, this application provides a control method for an electric rice box, which is applied to the electric rice box provided in any of the above embodiments. For example, Figure 5 as shown, the method includes:

[0122] S11: Receive a separation instruction;

[0123] In one embodiment, when the electric rice box receives a user's selection of the rice cooking or rice soup cooking mode, it is regarded as receiving a separation instruction. That is, as long as the electric rice box cooks rice and rice soup, it will perform rice soup separation.

[0124] However, some users may not need to use the rice soup separation function at certain times, and the situation in the above embodiment cannot meet the user's needs. Therefore, in another embodiment, a separate rice soup separation button is provided on the electric rice box. When the user clicks the rice soup separation button, a separation instruction is sent to the electric rice box.

[0125] S12: Trigger a preset condition;

[0126] It can be understood that, as known from the above reception of the separation instruction, when the separation instruction is received, the operation of rice soup separation is not required temporarily. Therefore, it is necessary to monitor whether a preset condition is triggered.

[0127] Taking rice cooking as an example: In actual use, generally, rice soup separation is required when the rice is almost cooked. If it is too early, the rice will not be cooked. If it is too late, the rice soup will be completely incorporated into the rice and cannot be separated. Therefore, in the embodiments of this application, when it is monitored that the rice is in an almost cooked state, the preset condition is triggered.

[0128] Specifically:

[0129] In one embodiment, after a preset duration starts to run, the preset condition is triggered. For example, the overall running time of rice cooking is 25 minutes, and the preset duration is 20 minutes. That is, in this embodiment, the running duration is used as the basis for judging the state of the rice.

[0130] As an implementation manner of the embodiments of this application, the preset duration is a fixed duration, and the fixed duration is determined according to previous tests.

[0131] As another implementation manner of the embodiments of this application, in some relatively intelligent electric rice boxes, the preset duration is determined based on at least one of the following parameters:

[0132] The water volume in the inner pot at the start of operation, the operation mode, where the operation mode includes options for cooking rice (such as cooking rice and cooking rice soup) and the heating level. It should be noted that some electric rice boxes do not have a separate heating level selection button because their heating level is fixed, and each cooking option corresponds to a set of heating levels.

[0133] The corresponding relationship between each parameter and the preset duration is roughly as follows:

[0134] When the operating modes are the same, the more water there is in the inner pot at the start of operation, the longer the preset duration. Because the more water there is, it means there is more rice to be cooked. To ensure that the rice is thoroughly cooked, the heating duration needs to be longer.

[0135] When the amount of water in the inner pot at the start of operation is the same and the cooking option is the same, the lower the heating level, the longer the preset duration. When the amount of water in the inner pot at the start of operation is the same and the cooking option is the same, the energy required for the rice to be thoroughly cooked is certain. The lower the heating level, the longer the time it takes.

[0136] In another embodiment, it further includes:

[0137] When it is detected that the water level in the inner pot reaches the preset water level, a preset condition is triggered. That is, in this embodiment, the water level in the inner pot is used as the basis for judging the state of the rice.

[0138] S13: Control the inner pot to rise at a preset rate.

[0139] As a preferred implementation manner of this embodiment, obtain the water level in the inner pot when the preset condition is triggered, and determine the preset rate based on the water level. The higher the water level, the faster the rising rate. A higher water level indicates that there is more water in the inner pot. If the rising rate is slow, it may cause too much rice soup to be incorporated into the rice, affecting the taste of the rice and the starch content.

[0140] Of course, in practice, for simpler control, when the cooking option is determined, the rising rate is determined.

[0141] The rice cooker control method provided by the embodiments of the present application can, after receiving the separation instruction and when the preset condition is triggered, control the inner pot to rise at a preset rate. When the inner pot rises, the rice soup in the inner pot flows out of the inner pot through the drain hole, achieving the effect of separating the rice soup and meeting the needs of users.

[0142] It should be noted that in the description of the present application, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present application, unless otherwise stated, the meaning of "a plurality" refers to at least two.

[0143] It can be understood that the same or similar parts in the above embodiments can be referred to each other, and the content not detailed in some embodiments can be seen in the same or similar content of other embodiments.

Claims

1. An electric rice box, comprising: An upper cover, a base, and an inner container. The upper cover and the base form a sealed cavity, and the inner container is located within the sealed cavity. It is characterized in that it further includes: a lifting device; The lifting device is used to lift the inner container from the base to a preset position; The inner container is provided with a drain hole; When the inner container is not lifted, the rice soup cannot flow out through the drain hole; when the inner container is lifted, the rice soup flows out through the drain hole.

2. The rice cooker box according to claim 1, characterized in that: The drain hole is provided at the bottom of the inner container. When the inner container is lifted, the rice soup flows from the drain hole into the base.

3. The rice cooker box according to claim 1, characterized in that It further includes: A soup storage cavity; The soup storage cavity is arranged in the base; When the inner container is lifted, the rice soup flows from the drain hole into the soup storage cavity.

4. The rice cooker box according to claim 1, wherein: The lifting device includes a motor and a transmission structure; The motor drives the inner container to rise or fall through the transmission structure.

5. The rice cooker box according to claim 4, characterized in that: The transmission structure includes a gear and a rack; The gear is connected to the motor shaft; when the motor rotates, the gear rotates; The gear is meshed and connected to the rack; when the gear rotates, the rack rises or falls; The rack is connected to the inner container. When the rack rises, the inner container rises; when the rack falls, the inner container falls.

6. The rice cooker box according to claim 1, characterized in that, It further includes: A heating device; The heating device is arranged on the inner container.

7. The rice cooker box according to claim 1, characterized in that, It further includes: A heating device; The heating device is arranged on the base.

8. The rice cooker box according to claim 1, characterized in that, It further includes: A steaming rack; The steaming rack is located within the sealed cavity; The steaming rack is located above the inner container.

9. The rice cooker box according to claim 1, characterized in that, It further includes: A lunch box; The lunch box is located within the sealed cavity; The lunch box is located above the inner container.

10. The rice cooker box according to claim 9, characterized in that, It further includes: A lunch box cover and a sealing ring; The lunch box cover matches the lunch box; The sealing ring is used to form a sealed space between the lunch box cover and the lunch box.

11. A control method for an electric rice box, characterized in that, Applied to the rice cooker according to any one of claims 1-10, the method includes: After receiving a separation instruction, if a preset condition is triggered, control the inner container to rise at a preset rate.

12. According to the method of claim 11, it is characterized in that: After starting to run for a preset duration, trigger the preset condition.

13. The method according to claim 12, wherein It further includes: Obtain the water level in the inner container when the preset condition is triggered, and determine the preset rate based on the water level. The higher the water level, the faster the rising rate.

14. The method according to claim 12, wherein It further includes: When it is detected that the water level in the inner container reaches the preset water level, trigger the preset condition.