Electric rice cooker and control method thereof

Abstract

The application discloses an electric rice cooker and a control method thereof. The electric rice cooker comprises a weighing mechanism, a storage bin, a feeding pipe assembly, a feeding cavity assembly, an air suction assembly and a cooking cavity. The storage bin is placed on the weighing mechanism. The feeding pipe assembly is in communication with the storage bin and the feeding cavity assembly respectively. The feeding cavity assembly closes a discharging port. The feeding pipe assembly closes an air inlet. The weighing mechanism weighs the weight of the storage bin. The air suction assembly starts to work. The air suction assembly sucks rice grains in the storage bin into the feeding cavity assembly through the feeding pipe assembly, so that the rice grains fall into the cooking cavity. The weighing mechanism detects the weight in real time until the target weight is reached. The feeding pipe assembly opens the air inlet. The air suction assembly sucks the rice grains in the feeding pipe assembly into the feeding cavity assembly and does not suck the rice grains in the storage bin. The problems that some rice grains are left in the feeding channel during the feeding process of the electric rice cooker in the prior art, the left rice grains produce peculiar smell due to long time left and the metering is not accurate are solved.

Description

Technical Field

[0001] This invention relates to the field of cooking equipment technology, and in particular to an electric rice cooker and its control method. Background Technology

[0002] Rice cookers generally have functions such as cooking rice, cooking porridge, and keeping warm. Some rice cookers also have a feeding function, but some rice grains may remain in the feeding channel, leading to inaccurate measurement. In addition, rice grains left in the channel for too long can cause the rice to spoil and produce an odor. Summary of the Invention

[0003] In view of this, the present invention provides a rice cooker and its control method to solve the problems in the prior art where some rice grains remain in the feeding channel during the feeding process, which can cause odors due to prolonged retention and inaccurate metering.

[0004] To achieve one or more of the above objectives or other objectives, the present invention provides a rice cooker, comprising a weighing mechanism, a storage bin, a feeding pipe assembly, a feeding chamber assembly, a ventilation assembly, and a cooking chamber. The storage bin is placed on the weighing mechanism. The feeding pipe assembly is connected to the storage bin and the feeding chamber assembly respectively. The ventilation assembly is connected to the feeding chamber assembly. The feeding chamber assembly has an openable and closable discharge port, which corresponds to the cooking chamber. The feeding pipe assembly has an openable and closable air inlet.

[0005] The feeding chamber assembly opens the discharge port, the feeding pipe assembly closes the air inlet, the weighing mechanism weighs the storage bin, the exhaust assembly starts working, the exhaust assembly sucks up the rice grains in the storage bin and enters the feeding chamber assembly through the feeding pipe assembly, so that the rice grains in the feeding chamber assembly fall into the cooking chamber.

[0006] The weighing mechanism monitors the weight in real time until the target weight is reached. The feed pipe assembly opens the air inlet, and the exhaust assembly sucks the rice grains in the feed pipe assembly into the feed chamber assembly, without sucking the rice grains in the storage bin. The exhaust assembly stops working after a preset time, and the feed chamber assembly closes the discharge port.

[0007] Preferably, the feed pipe assembly includes a feed pipe, a tee pipe, and a control valve. The tee pipe has a vertical inlet, a first horizontal inlet, and a second horizontal inlet. The vertical inlet is connected to the storage bin, the second horizontal inlet is connected to one end of the feed pipe, and the other end of the feed pipe is connected to the feed chamber assembly. The control valve controls the opening and closing of the first horizontal inlet, which is the air inlet.

[0008] Preferably, the storage bin includes a bin body, a flow guiding cavity, and a flow channel. The bin body is placed on the weighing mechanism. The flow guiding cavity has a first cavity opening and a second cavity opening. The first cavity opening is connected to the inner side wall of the bin body. The flow channel has an ascending channel and a descending channel. The lower end of the ascending channel is connected to the second cavity opening. The upper end of the ascending channel is connected to the upper end of the descending channel. The lower end of the descending channel is connected to the vertical pipe opening.

[0009] Preferably, the lower end of the rising channel is provided with multiple air inlets, and the diameter of the air inlets is smaller than the diameter of the rice grains in the guide cavity.

[0010] Preferably, the rice cooker further includes a sealing interface, one end of which is sealed to the lower end of the descending channel, and the other end of which is sealed to the vertical pipe opening.

[0011] Preferably, the feeding chamber assembly includes an upper chamber, a lower chamber, a shaft, a sealing cover, a spring, and a drive mechanism. The upper chamber covers the lower chamber, forming a feeding chamber. The discharge port is located in the lower chamber. The upper chamber has a feed inlet and an air outlet. The feed inlet is connected to the feed pipe, and the air outlet is connected to the exhaust assembly. The upper chamber has a sliding channel, and the shaft is located in and slides within the sliding channel. The drive mechanism is... The upper cavity is abutted against the first end of the shaft. The spring is sleeved on the shaft, with one end of the spring abutting against the upper cavity and the other end of the spring abutting against the first end of the shaft. The sealing cover is disposed at the second end of the shaft. The elasticity of the spring drives the shaft to slide in the sliding channel, so that the sealing cover closes the discharge port. The driving mechanism drives the shaft to slide in the sliding channel, causing the sealing cover to leave the discharge port, so as to open the discharge port.

[0012] Preferably, the drive mechanism includes a motor, a gear, and a rack. The motor is located in the upper cavity, and its shaft is connected to the gear. The gear meshes with the rack. One end of the rack is provided with a first inclined surface, and the first end of the shaft is provided with a second inclined surface. The first inclined surface abuts against the second inclined surface.

[0013] Preferably, the feed chamber assembly further includes a sealing ring, which is disposed at the connection between the upper cavity and the lower cavity.

[0014] Preferably, the feed chamber assembly further includes a baffle, which is disposed within the feed chamber and located at the air outlet.

[0015] Preferably, the weighing mechanism includes a weighing panel, a panel support, and a weighing sensor. The panel support is connected to the weighing panel and abuts against the weighing sensor vertically. The chamber is placed on the weighing panel.

[0016] This invention also proposes a rice cooker control method, characterized in that: it includes the above-mentioned rice cooker, and the method includes:

[0017] Receive cooking events input by the user;

[0018] The weight of the required rice grains is extracted based on the cooking event to obtain the required weight;

[0019] Obtain the weight data of the storage bin by the weighing mechanism to get the first weight;

[0020] Calculate the difference between the first weight and the required weight to obtain the target weight;

[0021] Generate and execute a first event, the first event including the feeding chamber assembly opening the discharge port, the feeding pipe assembly closing the air inlet, and the exhaust assembly starting to work;

[0022] Monitor the weighing data of the weighing mechanism until the weighing data of the weighing mechanism equals the target weight, generate and execute a second event, the second event including the feed pipe assembly opening the air inlet and the exhaust assembly stopping working after a preset time;

[0023] After the preset time, the feed chamber assembly is controlled to close the discharge port.

[0024] Implementing the embodiments of the present invention will have the following beneficial effects:

[0025] After adopting the above-mentioned rice cooker and its control method, after the weighing mechanism weighs the storage bin to the target weight, it does not immediately stop the exhaust component from working. Instead, it stops working after a preset time and simultaneously opens the air inlet. This way, it no longer sucks up the rice grains in the storage bin, but it still has a suction effect on the feeding pipe component, thereby sucking up the rice grains remaining in the feeding pipe component into the feeding chamber component. This solves the problem in the existing rice cooker that some rice grains remain in the feeding channel during the feeding process, which can cause odors and inaccurate measurement due to prolonged residue. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] in:

[0028] Figure 1 This is a schematic diagram of the structure of a rice cooker in one embodiment;

[0029] Figure 2 An exploded view of the internal structure of a rice cooker in one embodiment;

[0030] Figure 3 This is a cross-sectional view of the internal structure of a rice cooker in one embodiment;

[0031] Figure 4 This is an exploded view of the feed chamber assembly in one embodiment;

[0032] Figure 5 This is a flowchart of a rice cooker control method in one embodiment.

[0033] Explanation of reference numerals in the attached figures:

[0034] Rice cooker 10, weighing mechanism 1, storage bin 2, feeding pipe assembly 3, feeding chamber assembly 4, exhaust assembly 5, cooking chamber 6;

[0035] Weighing panel 11, panel bracket 12, weighing sensor 13;

[0036] Container body 21, flow guide cavity 22, first cavity opening 221, second cavity opening 222, flow channel 23, rising channel 231, air inlet 2311, and falling channel 232;

[0037] Feed pipe 31, tee pipe 32, vertical pipe port 321, first horizontal pipe port 322, second horizontal pipe port 323, control valve 33;

[0038] Upper cavity 41, feed inlet 411, air outlet 412, sliding channel 413, lower cavity 42, discharge port 421, shaft 43, second inclined surface 431, sealing cover 44, spring 45, drive mechanism 46, motor 461, gear 462, rack 463, first inclined surface 4631, baffle 47;

[0039] Sealing interface 71, sealing ring 72. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0043] like Figures 1 to 4 As shown, an embodiment of the present invention discloses a rice cooker 10, including a weighing mechanism 1, a storage bin 2, a feeding pipe assembly 3, a feeding chamber assembly 4, a ventilation assembly 5, and a cooking chamber 6. The storage bin 2 is placed on the weighing mechanism 1. The feeding pipe assembly 3 is connected to the storage bin 2 and the feeding chamber assembly 4 respectively. The ventilation assembly 5 is connected to the feeding chamber assembly 4. The feeding chamber assembly 4 has an openable and closable discharge port 421, which corresponds to the cooking chamber 6. The feeding pipe assembly 3 has an openable and closable air inlet.

[0044] The feeding chamber assembly 4 opens the discharge port 421, the feeding pipe assembly 3 closes the air inlet, the weighing mechanism 1 weighs the storage bin 2, the exhaust assembly 5 starts working, the exhaust assembly 5 sucks up the rice grains in the storage bin 2 and enters the feeding chamber assembly 4 through the feeding pipe assembly 3, so that the rice grains in the feeding chamber assembly 4 fall into the cooking chamber 6.

[0045] The weighing mechanism 1 weighs the storage bin 2 again until the target weight is reached, or the weighing mechanism 1 monitors the weighing in real time until the target weight is reached. The feeding pipe assembly 3 opens the air inlet, and the exhaust assembly 5 sucks the rice grains in the feeding pipe assembly 3 into the feeding chamber assembly 4, without sucking the rice grains in the storage bin 2. The exhaust assembly 5 stops working after a preset time, the feeding pipe assembly 3 closes the air inlet, and the feeding chamber assembly 4 closes the discharge port 421.

[0046] After the weighing mechanism 1 weighs the storage bin 2 to the target weight, it does not immediately stop the exhaust component 5 from working. Instead, it stops working after a preset time and simultaneously opens the air inlet. This way, it no longer sucks up the rice grains in the storage bin 2, but it still has a suction effect on the feeding pipe component 3, thereby sucking up the rice grains remaining in the feeding pipe component 3 into the feeding chamber component 4. This solves the problem in the existing rice cooker where some rice grains remain in the feeding channel during the feeding process, which can cause odors and inaccurate measurement due to prolonged residue.

[0047] In this embodiment, the rice cooker 10 also includes a shell, which serves as the main support. The weighing mechanism 1, the feeding pipe assembly 3, the feeding chamber assembly 4, the exhaust assembly 5, and the cooking chamber 6 are all located on the shell.

[0048] In this embodiment, the discharge port 421 is located in a closed space.

[0049] In this embodiment, the housing includes a lower shell and a cover. The cover is placed on the lower shell, and the cover and the lower shell form a sealed space. The cooking cavity 6 is located in the lower shell, and the feeding cavity assembly 4 is located in the cover, so that the feeding port 421 is located in the sealed space.

[0050] In this embodiment, the feed pipe assembly 3 includes a feed pipe 31, a three-way pipe 32, and a control valve 33. The three-way pipe 32 has a vertical pipe port 321, a first horizontal pipe port 322, and a second horizontal pipe port 323. The vertical pipe port 321 is connected to the storage bin 2, the second horizontal pipe port 323 is connected to one end of the feed pipe 31, and the other end of the feed pipe 31 is connected to the feed chamber assembly 4. The control valve 33 controls the opening and closing of the first horizontal pipe port 322, which is the air inlet.

[0051] The control valve 33 includes a motor 461 and a soft rubber body. The soft rubber body is connected to the output shaft of the motor 461. The motor 461 drives the soft rubber body to move to the left, so that the soft rubber body leaves the first horizontal pipe opening 322, thereby opening the first horizontal pipe opening 322. The motor 461 drives the soft rubber body to move to the right, so that the soft rubber body abuts against the first horizontal pipe opening 322, thereby closing the first horizontal pipe opening 322.

[0052] In this embodiment, the storage hopper 2 includes a hopper body 21, a flow guiding cavity 22, and a flow channel 23. The hopper body 21 is placed in the weighing mechanism 1. The flow guiding cavity 22 has a first opening 221 and a second opening 222. The first opening 221 is connected to the inner wall of the hopper body 21. The flow channel 23 has an ascending channel 231 and a descending channel 232. The lower end of the ascending channel 231 is connected to the second opening 222, and the upper end of the ascending channel 231 is connected to the upper end of the descending channel 232. The lower end of the descending channel 232 is connected to the vertical pipe opening 321. The ascending channel 231 and the descending channel 232 can prevent rice grains in the flow guiding cavity 22 from freely entering the feed pipe 31.

[0053] In this embodiment, the lower end of the rising channel 231 is provided with a plurality of air inlets 2311, the diameter of which is smaller than the diameter of the rice grains in the guide cavity 22. During ventilation, the air inlets 2311 improve the flow of rice grains in the rising channel 231 and the falling channel 232.

[0054] In this embodiment, the rice cooker 10 further includes a sealing interface 71. One end of the sealing interface 71 is sealed to the lower end of the descending channel 232, and the other end of the sealing interface 71 is sealed to the vertical pipe opening 321. The sealing interface 71 ensures the airtightness of the connection between the descending channel 232 and the vertical pipe opening 321, preventing air leakage.

[0055] Specifically, the sealing interface 71 is provided with a soft rubber sheet, and a cross-shaped slit is opened in the center of the soft rubber sheet. When the air is being drawn in, the soft rubber sheet will be recessed along the cross-shaped slit, causing the slit to enlarge. When the air is drawn in, the cross-shaped slit returns to normal.

[0056] In this embodiment, the feeding chamber assembly 4 includes an upper cavity 41, a lower cavity 42, a shaft 43, a sealing cover 44, a spring 45, and a drive mechanism 46. The upper cavity 41 covers the lower cavity 42, and the upper cavity 41 and the lower cavity 42 form a feeding chamber. The discharge port 421 is located in the lower cavity 42. The upper cavity 41 has a feeding port 411 and an air outlet 412. The feeding port 411 is connected to the feeding pipe 31, and the air outlet 412 is connected to the exhaust assembly 5. The upper cavity 41 has a sliding channel 413, and the shaft 43 is located in the sliding channel 413 and slides within the sliding channel 413. A drive mechanism 46 is located in the upper cavity 41 and abuts against the first end of the shaft 43. A spring 45 is sleeved on the shaft 43, with one end of the spring 45 abutting against the upper cavity 41 and the other end abutting against the first end of the shaft 43. A sealing cover 44 is located at the second end of the shaft 43. The elasticity of the spring 45 drives the shaft 43 to slide in the sliding channel 413, causing the sealing cover 44 to close the discharge port 421. The drive mechanism 46 drives the shaft 43 to slide in the sliding channel 413, causing the sealing cover 44 to move away from the discharge port 421, thereby opening the discharge port 421. Under normal conditions, the elastic force of the spring 45 will cause the shaft 43 to slide upward along the sliding channel 413 until the sealing cover 44 closes the discharge port 421. The driving force of the drive mechanism 46 is greater than the elastic force of the spring 45, which will cause the shaft 43 to slide down along the sliding channel 413 so that the sealing cover 44 leaves the discharge port 421.

[0057] Specifically, the drive mechanism 46 includes a motor 461, a gear 462, and a rack 463. The motor 461 is located in the upper cavity 41, and its shaft is connected to the gear 462. The gear 462 meshes with the rack 463. One end of the rack 463 has a first inclined surface 4631, and the first end of the shaft 43 has a second inclined surface 431. The first inclined surface 4631 abuts against the second inclined surface 431. When the motor 461 drives the gear 462 to rotate clockwise, it causes the rack 463 to move towards the shaft 43. Because the first inclined surface 4631 abuts against the second inclined surface 431, the shaft 43 is forced to move downward, and the sealing cover 44 moves away from the discharge port 421. When the motor 461 drives the gear 462 to rotate counterclockwise, it causes the rack 463 to move away from the shaft 43. The elastic force of the spring 45 then exerts its effect, forcing the sealing cover 44 to seal the discharge port 421.

[0058] Specifically, the feed chamber assembly 4 further includes a sealing ring 72, which is disposed at the connection between the upper cavity 41 and the lower cavity 42. The sealing ring 72 enhances the sealing effect between the upper cavity 41 and the lower cavity 42.

[0059] In this embodiment, the feeding chamber assembly 4 further includes a baffle 47, which is disposed within the feeding chamber and located at the air outlet 412. The baffle 47 may prevent rice grains from entering the exhaust assembly 5.

[0060] In this embodiment, the weighing mechanism 1 includes a weighing panel 11, a panel support 12, and a weighing sensor 13. The panel support 12 is connected to the weighing panel 11 and abuts against the weighing sensor 13 vertically. The chamber 21 is placed on the weighing panel 11. The panel support 12 enhances the rigidity of the weighing panel 11.

[0061] like Figure 5 As shown in the figure, this invention also proposes a rice cooker control method, including the rice cooker described above, the method comprising:

[0062] Step S101: Receive cooking events input by the user.

[0063] Cooking events include cooking rice, cooking porridge, etc. The user inputs "cook rice" on the rice cooker, and the number of people eating is 4.

[0064] Step S102: Extract the weight of the required rice grains based on the cooking event to obtain the required weight.

[0065] According to the preset calculation rules, the weight of rice grains needed to cook rice for 4 people is the preset weight. For example, the preset weight is 8 liang (approximately 400 grams), so 8 liang is the required weight.

[0066] Step S103: Obtain the weight data of the storage bin by the weighing mechanism to obtain the first weight.

[0067] Users pre-add rice grains to the storage bin. The weight of the current storage bin is measured by a weighing mechanism to obtain the first weight, which includes the weight of the storage bin itself and the weight of the rice grains inside the storage bin.

[0068] Step S104: Calculate the difference between the first weight and the required weight to obtain the target weight.

[0069] Subtracting the required weight from the first weight will give you the target weight.

[0070] Step S105: Generate and execute a first event, the first event including the feeding chamber assembly opening the discharge port, the feeding pipe assembly closing the air inlet, and the exhaust assembly starting to work.

[0071] First open the feed port and air inlet, and then start the exhaust system.

[0072] Step S106: Monitor the weighing data of the weighing mechanism until the weighing data of the weighing mechanism is equal to the target weight, generate and execute a second event, the second event including the feed pipe assembly opening the air inlet and the exhaust assembly stopping working after a preset time.

[0073] After the exhaust system starts working, the weighing mechanism monitors the material. If the weight of the storage bin is equal to the target weight, the air inlet is opened and the exhaust system stops working after a preset time.

[0074] Step S107: After the preset time, control the feeding chamber assembly to close the discharge port.

[0075] After the preset time, open the feeding port to allow all the rice grains in the feeding chamber to enter the cooking chamber.

[0076] After the weighing mechanism weighs the storage bin to the target weight, it does not immediately stop the exhaust fan. Instead, it stops working after a preset time and simultaneously opens the air inlet. This stops sucking up rice grains from the storage bin, but still has a suction effect on the feeding pipe assembly, thus drawing in any remaining rice grains from the feeding pipe assembly into the feeding chamber assembly. This solves the problem in existing rice cookers where some rice grains remain in the feeding channel during the feeding process, causing odors and inaccurate measurement due to prolonged residue.

[0077] The above description discloses only preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. An electric rice cooker characterized by comprising: The device comprises a weighing mechanism, a storage bin, a feeding pipe assembly, a feeding cavity assembly, an air suction assembly and a cooking cavity. The storage bin is placed on the weighing mechanism. The feeding pipe assembly is in communication with the storage bin and the feeding cavity assembly respectively. The air suction assembly is in communication with the feeding cavity assembly. The feeding cavity assembly has an openable and closable discharging port corresponding to the cooking cavity. The feeding pipe assembly has an openable and closable air inlet. The feeding pipe assembly comprises a tee pipe having a vertical pipe port connected with the storage bin. The storage bin comprises a bin body, a flow guide cavity and a drainage channel. The flow guide cavity has a first cavity port and a second cavity port. The first cavity port is connected with the inner side wall of the bin body. The drainage channel has an ascending channel and a descending channel. The low end of the ascending channel is connected with the second cavity port. The high end of the ascending channel is connected with the high end of the descending channel. The low end of the descending channel is connected with the vertical pipe port. The low end of the ascending channel is provided with a plurality of air inlets. The feeding cavity assembly opens the discharging port. The feeding pipe assembly closes the air inlet. The weighing mechanism weighs the storage bin. The air suction assembly starts to work. The air suction assembly sucks the rice in the storage bin into the feeding cavity assembly through the feeding pipe assembly, so that the rice in the feeding cavity assembly falls into the cooking cavity. The weighing mechanism detects the weight in real time until the target weight is reached. The feeding pipe assembly opens the air inlet. The air suction assembly sucks the rice in the feeding pipe assembly into the feeding cavity assembly without sucking the rice in the storage bin. The air suction assembly stops working after a preset time. The feeding cavity assembly closes the discharging port.

2. The electric rice-cooker according to claim 1, characterized by: The feeding pipe assembly comprises a feeding pipe and a control valve. The tee pipe has a first horizontal pipe port and a second horizontal pipe port. The second horizontal pipe port is connected with one end of the feeding pipe. The other end of the feeding pipe is connected with the feeding cavity assembly. The control valve controls the opening and closing of the first horizontal pipe port. The first horizontal pipe port is the air inlet.

3. The electric rice-cooker according to claim 1, characterized by: The hole diameter of the air inlet is smaller than the diameter of the rice in the flow guide cavity.

4. The electric rice-cooker according to claim 1, characterized by: The electric rice cooker further comprises a sealing interface. One end of the sealing interface is sealingly connected with the low end of the descending channel. The other end of the sealing interface is sealingly connected with the vertical pipe port.

5. The electric rice-cooker according to claim 2, characterized by: The feeding cavity assembly comprises an upper cavity, a lower cavity, a shaft, a sealing cover, a spring and a driving mechanism, the upper cavity is arranged on the lower cavity, the upper cavity and the lower cavity form a feeding cavity, a lower outlet is arranged on the lower cavity, the upper cavity is provided with a feeding inlet and an air outlet, the feeding inlet is connected with the feeding pipe, the air outlet is connected with the exhaust assembly, the upper cavity is provided with a sliding channel, the shaft is arranged in the sliding channel and slides in the sliding channel, the driving mechanism is arranged on the upper cavity and abuts against a first end of the shaft, the spring is sleeved on the shaft, one end of the spring abuts against the upper cavity, and the other end of the spring abuts against the first end of the shaft, the sealing cover is arranged on a second end of the shaft, and the spring drives the shaft to slide in the sliding channel so that the sealing cover closes the lower outlet, the driving mechanism drives the shaft to slide in the sliding channel and drives the sealing cover to move away from the lower outlet so as to open the lower outlet.

6. The electric rice-cooker according to claim 5, characterized by: The driving mechanism comprises a motor, a gear and a rack, the motor is arranged on the upper cavity and a shaft thereof is connected with the gear, the gear is in meshing connection with the rack, one end of the rack is provided with a first inclined surface, and a second inclined surface is arranged on the first end of the shaft, and the first inclined surface abuts against the second inclined surface.

7. The electric rice-cooker according to claim 6, characterized by: The feeding cavity assembly further comprises a sealing ring, and the sealing ring is arranged at the connection between the upper cavity and the lower cavity.

8. The electric rice-cooker according to claim 5, characterized by: The feeding cavity assembly further comprises a blocking net, and the blocking net is arranged in the feeding cavity and located at the air outlet.

9. An electric rice cooker control method, characterized by: The method comprises the following steps: receiving a user inputted cooking event; extracting the weight of required rice grains according to the cooking event, obtaining a required weight; obtaining weight data of the weighing mechanism, obtaining a first weight; calculating the difference between the first weight and the required weight, obtaining a target weight; generating and executing a first event, the first event comprising opening a lower outlet of a feeding cavity assembly, closing an air inlet of a feeding pipe assembly, and starting an exhaust assembly; monitoring the weighing data of the weighing mechanism until the weighing data of the weighing mechanism is equal to the target weight, generating and executing a second event, the second event comprising opening the air inlet of the feeding pipe assembly and stopping the exhaust assembly after a preset time; controlling the feeding cavity assembly to close the lower outlet after the preset time.

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