Electric rice cooker

Abstract

The application provides an electric rice cooker. The electric rice cooker comprises a shell formed with a mounting cavity, the mounting cavity comprising a plurality of heating cavities, and the shell further being formed with an opening corresponding to each heating cavity; a plurality of inner pots, each inner pot being placed into the corresponding heating cavity through the opening, and a heating device being arranged in each heating cavity to heat the inner pot; at least one fan arranged in the mounting cavity; and a controller electrically connected with the heating device and the fan, and configured to determine at least one state adjustment parameter of the fan based on a cooking program and / or a number of the inner pots used in the cooking program during a cooking program running period between a first time when the cooking program starts and a second time when the cooking program ends, and change the state of the fan based on the determined state adjustment parameter. The above electric rice cooker can intelligently control the fan to run in combination with the actual use scene of the plurality of inner pots, and ensure the heat dissipation effect of the multi-pot electric rice cooker.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to an electric rice cooker. Background Technology

[0002] Existing multi-pot rice cookers suffer from high overall temperature rise due to the presence of multiple heat sources. When multiple pots are working together, the outer casing of the machine can become extremely hot to the touch. Furthermore, there is significant temperature fluctuation between the inner pots (or inner pans). While one inner pot is cooking, adjacent inner pots will also experience high temperatures even when not cooking, negatively impacting the user experience. The cooking processes of adjacent inner pots can also be affected when multiple pots are operating simultaneously.

[0003] To improve the temperature fluctuation problem, a fan can be installed inside the cavity of a multi-pot rice cooker to carry heat away from the inside of the cooker through airflow. However, in this type of heat dissipation method, the fan usually turns on when the program starts and turns off when the program ends, making it difficult to adapt to the different heating conditions of a multi-pot rice cooker and affecting the heat dissipation effect. Summary of the Invention

[0004] Based on this, the present invention aims to provide an improved rice cooker to at least solve the problem of temperature cross-contamination between inner pots in multi-pot rice cookers.

[0005] In a first aspect, this application provides a rice cooker, comprising:

[0006] The housing has an installation cavity formed inside it, the installation cavity includes a plurality of heating cavities, and the housing also has openings that correspond one-to-one with each of the heating cavities;

[0007] Multiple inner pots, each inner pot is placed into a corresponding heating chamber through the opening, and each heating chamber is provided with a heating device to heat the inner pot;

[0008] At least one fan is disposed within the mounting cavity; and,

[0009] The controller, electrically connected to the heating device and the fan, is configured to determine at least one state adjustment parameter of the fan based on the cooking program and / or the number of times the inner pot is used in the cooking program during the cooking program runtime period between a first moment when the cooking program starts and a second moment when the cooking program ends, and to change the state of the fan based on the determined state adjustment parameter.

[0010] The aforementioned rice cooker is equipped with a fan inside its cavity to expel hot air from the inner cavity to the outside of the rice cooker after the fan is turned on. Furthermore, during the cooking program's execution period, between the first moment of the cooking program's start and the second moment of its end, the fan's operation is intelligently controlled by adjusting the fan's state based on the cooking program and / or the number of inner pots used during the cooking program. This adapts to various heating conditions of multiple inner pots, ensuring effective heat dissipation from the inner cavity of the rice cooker, and to a certain extent, balancing the rice cooker's cooking effect, heat preservation effect, and power saving.

[0011] In one embodiment, the state adjustment parameters include parameters for controlling the fan to turn on. The controller is configured to control the fan to remain off at the first moment, and to determine the parameters for controlling the fan to turn on based on the cooking program and / or the number of inner pots used in the cooking program during the cooking program runtime, and to control the fan to turn on based on the parameters for controlling the fan to turn on.

[0012] In one embodiment, it further includes: at least one temperature measuring unit for detecting the temperature at a target location within the housing and electrically connected to the controller; the parameters for controlling the fan to turn on include the fan's operating temperature, and the controller is configured to control the fan to turn on when the temperature at the target location reaches the fan's operating temperature.

[0013] In one embodiment, at least one of the plurality of inner pots is capable of rapid cooking; when there is no rapid cooking program in the current cooking program and / or the number of inner pots used is at least two, the fan is turned on at a first turning temperature; when there is a rapid cooking program in the current cooking program and the number of inner pots used is one, the fan is turned on at a second turning temperature; wherein, the second turning temperature is greater than the first turning temperature.

[0014] In one embodiment, the second opening temperature is 5°C to 15°C higher than the first opening temperature.

[0015] In one embodiment, the target position includes at least one of the following positions: a position at the bottom of the inner pot; a position at the lid of the inner pot; or a position at a predetermined distance from the center of the fan.

[0016] In one embodiment, the state adjustment parameter further includes the fan speed.

[0017] In one embodiment, when the number of inner pots used in the current cooking program is one, the controller controls the fan to operate at a first speed; when the number of inner pots used in the current cooking program is multiple, the controller controls the fan to operate at a second speed; wherein the second speed is greater than the first speed.

[0018] In one embodiment, the fan speed is positively correlated with the number of inner pots used in the current cooking process.

[0019] In one embodiment, at least one of the plurality of inner pots is capable of rapid cooking; when there is no rapid cooking program in the current cooking program, the controller controls the fan to operate at a third speed; when there is a rapid cooking program in the current cooking program, the controller controls the fan to operate at a fourth speed; wherein the fourth speed is greater than the third speed.

[0020] In one embodiment, when multiple inner pots are being rapidly cooked in the current cooking program, the controller controls the fan to operate at a fifth speed; wherein the fifth speed is greater than the fourth speed.

[0021] In one embodiment, the state adjustment parameter further includes the fan's acceleration temperature; the controller is configured to control the fan to operate at a sixth speed when the temperature at the target location does not reach the fan's acceleration temperature; and to control the fan to operate at a seventh speed when the temperature at the target location reaches the fan's acceleration temperature; wherein the seventh speed is greater than the sixth speed.

[0022] In one embodiment, the state adjustment parameters further include the operating phase of the cooking program, the operating phase including a first operating phase and a second operating phase following the first operating phase; the controller is configured to control the fan to operate at an eighth speed when the current cooking program is in the first operating phase; and to control the fan to operate at a ninth speed when the current cooking program is in the second operating phase; wherein the ninth speed is greater than the eighth speed.

[0023] In one embodiment, the water in the inner pot has not yet boiled during the first operating phase, while the water in the inner pot has boiled or dried up during the second operating phase.

[0024] In one embodiment, the controller is configured to control the fan to start at an initial speed at the first moment, and to determine a tenth speed based on the cooking program and / or the number of inner pots used in the cooking program during the cooking program's runtime, and to control the fan to operate based on the tenth speed.

[0025] In one embodiment, the state adjustment parameters further include parameters for controlling the fan to shut down, and the controller is further configured to determine the parameters for controlling the fan to shut down based on the cooking program and / or the number of times the inner pot is used in the cooking program during the cooking program runtime, and to control the fan to shut down based on the parameters for controlling the fan to shut down.

[0026] In one embodiment, the tenth rotational speed is not equal to the initial rotational speed.

[0027] In one embodiment, it further includes: at least one temperature measuring unit for detecting the temperature at a target location within the housing and electrically connected to the controller; the parameters for controlling the fan to shut down include the fan's shut-off temperature, and the controller is configured to control the fan to shut down when the temperature at the target location reaches the fan's shut-off temperature.

[0028] In one embodiment, the controller is further configured to determine the fan's shut-off temperature based at least on the current cooking program, and to control the fan to shut off when the temperature at the target location reaches the fan's shut-off temperature.

[0029] In one embodiment, at least one of the plurality of inner pots is capable of rapid cooking; when there is no rapid cooking program in the current cooking program and / or the number of inner pots used is at least two, the fan is shut off at a first shut-off temperature; when there is a rapid cooking program in the current cooking program and the number of inner pots used is one, the fan is shut off at a second shut-off temperature; wherein, the second shut-off temperature is greater than the first shut-off temperature.

[0030] In one embodiment, the second shut-off temperature is 5°C to 15°C higher than the first shut-off temperature.

[0031] In one embodiment, the controller is also configured to control the fan to shut down at or after the second time.

[0032] In one embodiment, when the number of fans is at least two, the state adjustment parameter further includes the number of fans in operation, and the controller is configured to control the state of the fans based on the number of fans in operation.

[0033] In one embodiment, when at least two of the fans are running, the controller is configured to control the state of the other fans based on the state of one of the fans. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this specification 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 recorded in this specification. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 This is a side view schematic diagram of an embodiment of this application;

[0036] Figure 2 for Figure 1 A schematic diagram of the cross-section of surface AA;

[0037] Figure 3 This is a top view schematic diagram of an embodiment of this application;

[0038] Figure 4 for Figure 2 A schematic diagram of the cross-section of the BB surface;

[0039] Figure 5 This is a schematic diagram of module connections in an embodiment of this application;

[0040] Figure 6 This is a schematic diagram of module connections in an embodiment of this application;

[0041] Figure 7 This is a schematic diagram of each stage of the cooking process in an embodiment of this application;

[0042] Figure 8 This is a partial schematic diagram of the base cavity in an embodiment of this application;

[0043] Figure 9 This is a schematic diagram of the connection structure between the heating device and the inner pot in an embodiment of this application.

[0044] Component designation explanation:

[0045] 100. Rice cooker;

[0046] 10. Shell; 21-23. Inner pot; 30. Heating device; 40. Fan;

[0047] P1, first target location; P2, second target location; P3, third target location;

[0048] M1, the first operating phase; M2, the second operating phase. Detailed Implementation

[0049] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0050] 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 do not 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.

[0051] 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. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0052] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0053] This application provides a rice cooker with an internal fan to expel hot air from the inner cavity of the rice cooker to the outside after the fan is turned on. Furthermore, during the cooking program's execution period, between the first moment of program initiation and the second moment of program completion, the fan's state is intelligently controlled based on the cooking program and / or the number of inner pots used during the cooking program. This adapts to various heating conditions of multiple inner pots, ensuring effective heat dissipation from the inner cavity of the rice cooker, and to a certain extent, balancing the rice cooker's cooking effect, heat preservation effect, and power saving.

[0054] For example Figures 1 to 5 This application provides a rice cooker 100, including a housing 10, an installation cavity formed inside the housing 10, the installation cavity including a plurality of heating chambers, and an opening formed on the housing 10 corresponding to and communicating with each heating chamber; a plurality of inner pots, each inner pot being placed into a corresponding heating chamber through an opening, and a heating device 30 being provided in each heating chamber to heat the inner pot; at least one fan 40 located inside the housing 10; and a controller electrically connected to the heating device 30 and the fan 40, configured to determine at least one state adjustment parameter of the fan 40 based on the cooking program and / or the number of inner pots used in the cooking program during the cooking program operation period between a first moment when the cooking program starts and a second moment when the cooking program ends, and to change the state of the fan 40 based on the determined state adjustment parameter.

[0055] For example, the cooking program runtime segment refers to the period excluding the first moment when the cooking program starts and the second moment when the cooking program ends. During the cooking program runtime segment, the state of fan 40 can be changed according to the cooking program and / or the number of inner pots used in the cooking program to adapt to the different heating conditions of multiple inner pots. For example, when it is necessary to maintain a certain cavity temperature to speed up the cooking of rice, the controller can control fan 40 to not turn on at the first moment, but to turn on during the cooking program runtime segment. In this case, the state adjustment parameters can include parameters for controlling fan 40 to turn on. As another example, to prevent the cavity temperature from increasing as the number of inner pots increases, the fan speed of fan 40 can be increased during the cooking program runtime segment to achieve effective heat dissipation. In this case, the state adjustment parameters can also include the fan speed of fan 40. As yet another example, to maintain a certain heat preservation effect, the controller can control fan 40 to turn off during the cooking program runtime segment. In this case, the state adjustment parameters can include parameters for controlling fan 40 to turn off.

[0056] Optionally, at the first moment when the cooking program starts, the controller can control the fan 40 to turn on or keep the fan 40 off; at the second moment when the cooking program ends, the controller can control the fan 40 to stay on or keep the fan 40 off.

[0057] For example, such as Figure 2 and Figure 4 As shown, the multiple inner pots include inner pot 21, inner pot 22, and inner pot 23, and the multiple heating chambers include heating chamber 111, heating chamber 112, and heating chamber 113. Inner pot 21 is placed into heating chamber 111 through an opening, inner pot 22 is placed into heating chamber 112 through an opening, and inner pot 23 is placed into heating chamber 113 through an opening.

[0058] Optional, such as Figure 8 and Figure 9As shown, after removing the inner pot, the rice cooker 100 also includes a heat preservation cover on the outside of the inner pot, a heating plate at the bottom of the inner pot, and a center cover assembly. The heating device 30 includes a heating plate and a heating element passing through the heating plate. When the heating element is energized, it transfers heat to the heating plate to heat the inner pot. The center cover assembly passes through the center hole of the heating plate and can float up and down. Optionally, each inner pot can be equipped with a separate heating plate. Optionally, the front of the heating plate can fully contact the bottom surface of the inner pot. Optionally, the back of the heating plate is evenly provided with studs, which can be connected to the studs in the screw holes on the heat preservation cover using screws. Optionally, the heating plate can be assembled with the heat preservation cover as a component, and then assembled onto the middle frame. Optionally, the heating plate is made of die-cast aluminum.

[0059] For example, such as Figure 2 and Figure 4 As shown, the fan 40 can be in the form of a component, such as including fan blades, a shaft connected to the fan blades, and a motor, and may also include a bracket for mounting itself to the housing 10. When turned on, the fan 40 draws cool air from the environment into the various cavities of the rice cooker 100 to absorb heat within the cavities, and then exhausts it from the air outlet after flowing through each cavity, carrying away the heat from inside the rice cooker 100. The cavities of the rice cooker 100 are interconnected. Optionally, the fan 40 can be located at the bottom of the housing 10, so that the generated airflow passes through the components within the cavities of the rice cooker 100 at least from bottom to top, thereby carrying the heat to the outside of the rice cooker 100.

[0060] In some embodiments of this application, the state adjustment parameters include parameters for controlling the fan 40 to turn on. The controller is configured to keep the fan 40 off at a first moment, and determine the parameters for controlling the fan 40 to turn on based on the cooking program and / or the number of inner pots used in the cooking program during the cooking program's runtime, and control the fan to turn on based on the parameters for controlling the fan 40 to turn on. After the fan 40 turns on, the controller can also determine the operating parameters of the fan 40 (e.g., speed, acceleration temperature, cooking program stage, etc.) based on the cooking program and / or the number of inner pots used in the cooking program, and then control the operation of the fan 40 based on the operating parameters. It is understood that the controller can also control the fan to turn off based on the parameters for controlling the fan 40 to turn off, but the fan 40 can turn off during the cooking program's runtime, at a second moment, or after the second moment; this embodiment does not limit this. Optionally, at least one of the multiple inner pots can be used for quick cooking, so a quick cooking program can exist in the current cooking program.

[0061] For example, parameters used to control the fan 40 to turn on may include the start-up temperature, start-up stage, start-up time, etc.

[0062] Taking the activation temperature as an example, the controller can determine the activation temperature of fan 40 based on the current cooking program. For example, if the current cooking program is a normal cooking program, the controller can determine the activation temperature to be 100℃. Then, when the inner pot temperature reaches 100℃, the controller can control fan 40 to turn on. Alternatively, if the current cooking program includes a quick-cooking program, the controller can determine the activation temperature to be 110℃. The controller can also determine the activation temperature of fan 40 based on the number of inner pots used in the current cooking program. For example, if multiple inner pots are used in the current cooking program, the controller can determine the activation temperature to be 100℃. Then, when the inner pot temperature reaches 100℃, the controller can control fan 40 to turn on. Similarly, if only one inner pot is used in the current cooking program, the controller can determine the activation temperature to be 110℃. Then, when the inner pot temperature reaches 110℃, the controller can control fan 40 to turn on. The controller can also determine the operating temperature of the fan 40 based on the current cooking program and the number of inner pots used in the current cooking program. For example, if there is no quick cooking program in the current cooking program and / or the number of inner pots used is not 1, the controller can determine the operating temperature to be 100℃. Then, when the temperature of the inner pot reaches 100℃, the controller can control the fan 40 to turn on. Or, for example, if there is a quick cooking program in the current cooking program and the number of inner pots used is 1, the controller can determine the operating temperature to be 110℃. Then, when the temperature of the inner pot reaches 110℃, the controller can control the fan 40 to turn on.

[0063] The controller can also determine the activation stage of fan 40 based on the current cooking program and / or the number of inner pots used in the current cooking program. The activation stage can vary depending on the situation. For example, if the cooking program has stages such as preheating, heating, boiling, cooking rice, and simmering rice, and the current cooking program is a normal cooking program, the controller can determine that the initial stage is the heating stage. Therefore, when the current cooking program is in the heating stage, the controller can control fan 40 to turn on. As another example, if the current cooking program includes a quick cooking program, the controller can determine that the initial stage is the boiling stage. Therefore, when the current cooking program is in the boiling stage, the controller can control fan 40 to turn on. Other confirmation conditions for the activation stage and the corresponding control conditions of fan 40 can be found in the aforementioned activation temperature, which will not be repeated here.

[0064] The controller can also determine the activation time of fan 40 based on the current cooking program and / or the number of inner pots used in the current cooking program. The activation time may vary depending on the situation. For example, if the current cooking program is a normal cooking program, the controller can determine the start time to be 10 minutes after the current cooking program has run. That is, after the current cooking program has run for 10 minutes, the controller can control fan 40 to turn on. As another example, if the current cooking program includes a quick cooking program, the controller can determine the start time to be 15 minutes after the current cooking program has run. That is, after the current cooking program has run for 15 minutes, the controller can control fan 40 to turn on. Other confirmation conditions for the activation time and the corresponding control conditions for fan 40 can be referred to the aforementioned activation temperature, and will not be repeated here.

[0065] It is understood that the activation parameters may include one or more of the following: activation temperature, activation stage, and activation time. When there are multiple activation parameters, the fan 40 can be controlled to turn on either by setting the priority of the activation parameters or by setting the activation parameters to meet some or all predetermined conditions. The specific setting method can be determined based on the actual application requirements of the rice cooker 100, and this application does not impose any restrictions on it.

[0066] For example, operating parameters may include the fan speed, power, acceleration temperature, and the stage of the cooking program. It is understood that when the fan 40 is turned on, its operating parameters may be constant or vary based on the current cooking program and / or the number of inner pots used in the current cooking program. When the operating parameters of the fan 40 are partially or completely constant, the complexity of the program design can be reduced, thereby reducing the manufacturing cost of the rice cooker 100; while when the operating parameters of the fan 40 are variable, it can be ensured that the cooking program is not affected, and that the internal temperature of the rice cooker 100 remains within a suitable temperature range, thereby improving the intelligent heat dissipation characteristics of the rice cooker 100. Optionally, operating parameters may include one or more of the fan speed, power, acceleration temperature, and the stage of the cooking program.

[0067] Furthermore, taking the fan speed 40 as an example, the controller can determine the fan speed 40 based on the current cooking program. For example, if the current cooking program is a normal cooking program, the controller can determine the fan speed 40 to be 1800 r / min, and then control the fan to operate at 1800 r / min. Alternatively, if the current cooking program includes a quick-cooking program, the controller can determine the fan speed 40 to be 2800 r / min, and then control the fan to operate at 2800 r / min. The controller can also determine the fan speed 40 based on the number of inner pots used in the current cooking program. For example, if only one inner pot is used in the current cooking program, the controller can determine the fan speed 40 to be 1800 r / min, and then control the fan to operate at 1800 r / min. Similarly, if multiple inner pots are used in the current cooking program, the controller can determine the fan speed 40 to be 2800 r / min, and then control the fan to operate at 2800 r / min. The controller can also determine the fan speed 40 based on the current cooking program and the number of inner pots used in the current cooking program. For example, if there is a quick cooking program in the current cooking program and there are multiple inner pots used, the controller can determine the fan speed 40 to be 2800 r / min, and then control the fan 40 to operate at a speed of 2800 r / min. Or, if there is no quick cooking program in the current cooking program and / or there are not multiple inner pots used, the controller can determine the fan speed 40 to be 1800 r / min, and then control the fan 40 to operate at a speed of 1800 r / min.

[0068] For example, parameters for controlling the fan 40 to turn off may include a shutdown temperature, a shutdown stage, and a shutdown time. It is understood that the parameters for controlling the fan 40 to turn off may be constant or may vary based on the current cooking program and / or the number of inner pots used in the current cooking program. Optionally, the shutdown parameters may include one or more of a shutdown temperature, a shutdown stage, and a shutdown time.

[0069] In some embodiments of this application, such as Figure 6 As shown, the rice cooker 100 also includes a temperature measuring unit for detecting the temperature at a target location within the housing 10 and electrically connected to the controller. Therefore, when the parameter for controlling the fan 40 to turn on includes the fan 40's operating temperature, the controller can be configured to control the fan 40 to turn on when the temperature at the target location reaches the fan 40's operating temperature. Conversely, when the parameter for controlling the fan 40 to turn off includes the fan 40's closing temperature, the controller can be configured to control the fan 40 to turn off when the temperature at the target location reaches the fan 40's closing temperature.

[0070] In some embodiments of this application, such as Figure 1 and Figure 2As shown, the target position includes at least one of the following positions: a first target position P1 located at the bottom of the inner pot, a second target position P2 located at the lid of the inner pot, and a third target position P3 indicating the position near the fan 40. For example, the bottom of the inner pot is in contact with the center cover assembly, so the first target position P1 can correspond to the position of the center cover assembly, thus the temperature measuring unit can be disposed within the center cover assembly; the second target position P2 can be any position on the lid, thus the temperature measuring unit can also be disposed on the lid; the third target position P3 can be a position at a predetermined distance from the center of the fan 40, thus the temperature measuring unit can also be disposed near the fan 40. Optionally, the predetermined distance can be greater than or equal to the length or width of the fan 40. For example, the center cover assembly can float up and down, and it passes through the central hole of the heating device 30, and has positioning notches on both sides. The positioning notches can cooperate with the pillars on both sides of the central hole of the heating device 30 for positioning, thereby preventing the center cover assembly from shaking or shifting.

[0071] In some embodiments of this application, when there is no quick-cook program in the current cooking program and / or at least two inner pots are in use, the fan 40 is turned on at a first turning temperature; when there is a quick-cook program in the current cooking program and one inner pot is in use, the fan is turned on at a second turning temperature; wherein the second turning temperature is greater than the first turning temperature. This helps to ensure that when one inner pot is in quick-cooking mode, the fan 40 is not turned on prematurely, prioritizing the rate of temperature increase so that the rice in the quick-cooking pot is cooked as quickly as possible; and when there is no quick-cook program in the cooking program and / or multiple inner pots are working, there is no need to increase the turning temperature, thus ensuring that the temperature inside the rice cooker cavity does not become too high while meeting the cooking requirements.

[0072] Optionally, when the target location includes the first target location P1, the first opening temperature is less than 110℃, for example, it can be one of 95℃, 98℃, 100℃, 102℃, 105℃, or 108℃, and the second opening temperature is less than 120℃, for example, it can be one of 105℃, 108℃, 110℃, 112℃, or 115℃. Optionally, the second opening temperature is 5℃ to 15℃ higher than the first opening temperature. For example, when the first opening temperature is 100℃, the second opening temperature can be one of 105℃, 108℃, 110℃, 112℃, or 115℃. Optionally, when the target location includes the second target location P2, the first opening temperature is less than 90℃, for example, it can be one of 75℃, 78℃, 80℃, 82℃, 85℃, or 88℃, and the second opening temperature is less than 100℃, for example, it can be one of 80℃, 85℃, 90℃, 92℃, or 95℃. Optionally, when the target location includes the third target location P3, the first opening temperature is less than 70°C, for example, it can be one of 55°C, 60°C, or 65°C, and the second opening temperature is less than 80°C, for example, it can be one of 65°C, 70°C, or 75°C.

[0073] In some embodiments of this application, when there is no quick-cook program in the current cooking program and / or at least two inner pots are in use, the fan shut-off temperature is a first shut-off temperature; when there is a quick-cook program in the current cooking program and one inner pot is in use, the fan shut-off temperature is a second shut-off temperature; wherein, the second shut-off temperature is greater than the first shut-off temperature. This helps ensure that when one inner pot is in quick-cooking mode, the fan 40 is not shut off too late, prioritizing the heat within the quick-cooking pot; and when there is no quick-cook program in the cooking program and / or multiple inner pots are working, there is no need to increase the shut-off temperature, ensuring the fan 40 operates for a sufficient duration to meet cooking requirements while preventing the temperature inside the rice cooker cavity from becoming too high. Optionally, the first shut-off temperature is 10°C to 20°C lower than the first on temperature, and the second shut-off temperature is 10°C to 20°C lower than the second on temperature.

[0074] Optionally, when the target location includes the first target location P1, the first shut-off temperature is less than 100℃, for example, it can be 85℃, 88℃, 90℃, 92℃, 95℃, or 98℃, and the second shut-off temperature is less than 110℃, for example, it can be 95℃, 98℃, 102℃, 105℃, or 108℃. Optionally, the second shut-off temperature is 5℃ to 15℃ higher than the first shut-off temperature. For example, when the first shut-off temperature is 90℃, the second shut-off temperature can be one of 95℃, 98℃, 100℃, 102℃, or 105℃. Optionally, when the target location includes the first target location P2, the first shut-off temperature is less than 80℃, for example, it can be 65℃, 68℃, 70℃, 72℃, 75℃, or 78℃, and the second shut-off temperature is less than 90℃, for example, it can be 75℃, 78℃, 82℃, 85℃, or 88℃. Optionally, when the target location includes the third target location P3, the first shut-off temperature is less than 65°C, for example, it can be one of 50°C, 55°C, 60°C, and 63°C, and the second shut-off temperature is less than 75°C, for example, it can be one of 60°C, 65°C, 70°C, and 73°C.

[0075] Optionally, when there are multiple target locations, the controller can be configured to shut down fan 40 when the temperature at each of the multiple target locations reaches its respective fan shutdown temperature. This helps to ensure the operating time of fan 40, thereby further ensuring the heat dissipation effect.

[0076] In some embodiments of this application, the state adjustment parameters may include, in addition to parameters for controlling the fan 40 to turn on, the fan 40 speed. When only one inner pot is used in the current cooking program, the controller controls the fan to operate at a first speed; when multiple inner pots are used in the current cooking program, the controller controls the fan to operate at a second speed; wherein the second speed is greater than the first speed. It can be understood that when the temperature of the bottom and / or lid of multiple inner pots exceeds the fan's operating temperature, the fan can also operate at a speed greater than or equal to the second speed. This helps to ensure that the temperature inside the rice cooker cavity does not become too high while meeting cooking requirements. Optionally, the first rotational speed is less than 5000 r / min, for example, it can be 1000 r / min, 2000 r / min, 3000 r / min, 4000 r / min, or 4500 r / min, and the second rotational speed is less than or equal to 5000 r / min, for example, it can be 1500 r / min, 2500 r / min, 3500 r / min, 4500 r / min, or 5000 r / min.

[0077] Furthermore, the speed of fan 40 is positively correlated with the number of inner pots used in the current cooking program. In other words, the more inner pots used, the faster fan 40 rotates, resulting in better heat dissipation. Understandably, the increase in fan 40 speed is limited by the performance of the fan motor, thus there is a maximum speed for fan 40. Once the fan 40 reaches its maximum speed, even if the number of inner pots used continues to increase, the fan 40 speed will no longer increase.

[0078] In some embodiments of this application, when there is no fast cooking program in the current cooking program, the controller controls the fan 40 to operate at a third speed; when there is a fast cooking program in the current cooking program, the controller controls the fan 40 to operate at a fourth speed; wherein the fourth speed is greater than the third speed. This helps to ensure that the temperature inside the rice cooker cavity does not get too high while meeting cooking requirements. Optionally, the third speed is less than 5000 r / min, for example, it can be 1000 r / min, 2000 r / min, 3000 r / min, 4000 r / min, or 4500 r / min, and the fourth speed is less than or equal to 5000 r / min, for example, it can be 1500 r / min, 2500 r / min, 3500 r / min, 4500 r / min, or 5000 r / min.

[0079] Furthermore, when multiple inner pots are being used for rapid cooking in the current cooking program, the controller controls the fan 40 to operate at a fifth speed, which is higher than the fourth speed. This helps to meet the cooking needs of multiple pots being cooked quickly while ensuring that the temperature inside the rice cooker cavity does not become too high.

[0080] In some embodiments of this application, the state adjustment parameters may include, in addition to parameters for controlling the fan 40 to turn on, the fan 40's speed-up temperature; the controller is configured to control the fan to operate at a sixth speed when the temperature at the target location has not reached the fan's speed-up temperature; and to control the fan to operate at a seventh speed when the temperature at the target location has reached the fan's speed-up temperature; wherein the seventh speed is greater than the sixth speed. This helps to further ensure that the temperature inside the rice cooker cavity does not become too high while meeting cooking requirements. Optionally, the sixth speed is less than 5000 r / min, for example, it can be 1000 r / min, 2000 r / min, 3000 r / min, 4000 r / min, or 4500 r / min, and the seventh speed is less than or equal to 5000 r / min, for example, it can be 1500 r / min, 2500 r / min, 3500 r / min, 4500 r / min, or 5000 r / min. The fan speed-up temperature setting can also be changed depending on the selected target location. For example, when the target location includes the first target location P1, the speed-up temperature can be less than 120℃, such as 105℃, 108℃, 110℃, 112℃, or 115℃; when the target location includes the second target location P2, the speed-up temperature can be less than 100℃, such as 80℃, 85℃, 90℃, 92℃, or 95℃; when the target location includes the third target location P3, the speed-up temperature can be less than 80℃, such as 65℃, 70℃, or 75℃. Optionally, when there are multiple target locations, the controller can be configured to control the fan speed to increase when the temperature at multiple target locations reaches their respective corresponding fan speed-up temperatures. This helps to prevent the fan from speeding up too early and affecting the cooking effect.

[0081] In some embodiments of this application, the cooking process can be sequentially as follows: Figure 7The various operating stages shown include a first operating stage M1 and a second operating stage M2 following the first operating stage M1. Therefore, the state adjustment parameters, in addition to those controlling the fan 40 to turn on, can also include the operating stages of the cooking program. The controller is configured to control the fan to operate at an eighth speed when the current cooking program is in the first operating stage M1; and to control the fan to operate at a ninth speed when the current cooking program is in the second operating stage M2; wherein the ninth speed is greater than the eighth speed. This helps to ensure that the temperature inside the rice cooker cavity does not become too high at different stages of the cooking program while meeting the cooking requirements. Optionally, the eighth speed is less than 5000 r / min, for example, it can be 1000 r / min, 2000 r / min, 3000 r / min, 4000 r / min, or 4500 r / min; and the ninth speed is less than or equal to 5000 r / min, for example, it can be 1500 r / min, 2500 r / min, 3500 r / min, 4500 r / min, or 5000 r / min. Optionally, such as... Figure 7 As shown, the first operating stage M1 includes a preheating stage and a heating stage, and the second operating stage M2 includes a boiling heating and maintenance stage, a boiling to water-drying stage, a rice-simmering stage, and a heat-keeping stage. That is to say, in the first operating stage M1, the water in the inner pot has not yet boiled, while in the second operating stage M2, the water in the inner pot has boiled or dried up.

[0082] In some embodiments of this application, the rice cooker 100 also includes a powerful cooling mode. In this powerful cooling mode, the fan 40 operates at its highest speed to achieve rapid cooling. Optionally, this powerful cooling mode can be selected and input by the user, or it can be controlled by the controller when the controller detects that the temperature at any target location exceeds a preset temperature threshold.

[0083] In some embodiments of this application, the controller is configured to control the fan to start at an initial speed at a first moment, and to determine a tenth speed based on the cooking program and / or the number of inner pots used in the cooking program during the cooking program's runtime, and to control the fan 40 to operate based on the tenth speed. Optionally, the tenth speed is not equal to the initial speed. Optionally, the initial speed is less than the tenth speed, thereby saving power. By determining a tenth speed different from the initial speed of the fan 40 based on the cooking program and / or the number of inner pots used in the cooking program, that is, the tenth speed can adapt to the actual heating situation of multiple inner pots, thereby ensuring heat dissipation effect.

[0084] Furthermore, the status adjustment parameters include not only the operating parameters of the fan 40, but also parameters for controlling the fan 40 to turn off. The controller is configured to control the fan 40 to turn on at the first moment, and during the cooking program, determine the operating parameters of the fan 40 and the parameters for controlling the fan 40 to turn off based on the cooking program and / or the number of inner pots used during the cooking program, and control the fan 40 to run and turn off based on the operating parameters and the parameters for controlling the fan 40 to turn off. By controlling the operation and shutdown of the fan 40 during the cooking program, a suitable internal temperature can be ensured in the rice cooker 100, while avoiding the fan 40 running for too long and affecting the heat preservation effect.

[0085] In some embodiments of this application, the state adjustment parameters include parameters for controlling the fan 40 to turn off. The controller is configured to control the fan 40 to turn on at a first moment, and to determine the parameters for controlling the fan 40 to turn off during the cooking program's runtime based on the cooking program and / or the number of inner pots used during the cooking program, and to control the fan 40 to turn off based on the parameters for controlling the fan 40 to turn off. By controlling the fan 40 to turn off during the cooking program's runtime, a certain internal temperature can be maintained in the rice cooker 100, preventing the fan 40 from running for too long and affecting the heat preservation effect.

[0086] In some embodiments of this application, the parameters used to control the fan 40 to turn off may include the fan 40's shut-off temperature. For example, when one or more temperature measuring units at the aforementioned target location detect that the temperature at the target location reaches the fan 40's shut-off temperature, the controller may control the fan 40 to turn off.

[0087] In some embodiments of this application, the controller is also configured to control the fan 40 to turn off at or after a second moment. By turning off or delaying the fan 40 at the second moment after the cooking program ends, it is beneficial to further ensure the heat dissipation effect of the rice cooker 100 cavity.

[0088] In some embodiments of this application, when the number of fans 40 is at least two, the state adjustment parameters also include the number of fans 40 in operation, and the controller is configured to control the state of the fans 40 based on the number of fans 40 in operation. For example, when multiple fans 40 are provided in the rice cooker 100, if the cooking program is started, one fan 40 is turned on simultaneously. When the cooking program includes a quick-cooking program and / or multiple inner pots are used, it can be determined that the number of fans 40 in operation is two or more, and the state of the fans 40 can be changed based on the determined number of fans in operation, i.e., more fans 40 can be turned on. For example, when the cooking program includes a keep-warm program and / or the number of inner pots is reduced, it can be determined that the number of fans 40 in operation is reduced accordingly. For example, if originally three fans 40 were running, it can be determined that the number of fans 40 in operation is one or two, and the controller can change the state of the fans 40 based on the determined number of fans in operation, i.e., some fans 40 can be turned off. Through the coordinated control of multiple fans 40, it is beneficial to better ensure the heat dissipation and cooking effect of the rice cooker 100 cavity.

[0089] Furthermore, when at least two fans 40 are operating, the controller is configured to control the state of the other fans 40 based on the state of one fan 40. For example, taking two fans 40 as an example, when it is detected that one fan 40 is running at maximum speed for a prolonged period, the controller can control the other fan 40 to increase its speed to further ensure heat dissipation; when it is detected that one fan 40 suddenly shuts down during the cooking program, the controller can control the other fan 40 to increase its speed to ensure heat dissipation; when it is detected that one fan 40 reduces its speed, the controller can control the other fan 40 to also reduce its speed or shut down after a predetermined time to ensure the rice cooker 100 maintains its heat preservation effect.

[0090] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An electric rice cooker, characterized in that, include: The housing has an installation cavity formed inside it, the installation cavity includes a plurality of heating cavities, and the housing also has openings that correspond one-to-one with each of the heating cavities; Multiple inner pots, each inner pot is placed into a corresponding heating chamber through the opening, and each heating chamber is provided with a heating device to heat the inner pot; At least one fan is disposed within the mounting cavity; as well as, The controller, electrically connected to the heating device and the fan, is configured to determine at least one state adjustment parameter of the fan based on the cooking program and the number of times the inner pot is used during the cooking program, between a first moment when the cooking program starts and a second moment when the cooking program ends, and to change the state of the fan based on the determined state adjustment parameter.

2. The rice cooker according to claim 1, characterized in that, The state adjustment parameters include parameters for controlling the fan to turn on. The controller is configured to control the fan to remain off at the first moment, and to determine the parameters for controlling the fan to turn on based on the cooking program and / or the number of inner pots used in the cooking program during the cooking program's runtime, and to control the fan to turn on based on the parameters for controlling the fan to turn on.

3. The rice cooker according to claim 2, characterized in that, The rice cooker also includes at least one temperature measuring unit for detecting the temperature at a target location inside the casing and electrically connected to the controller; the parameters for controlling the fan to turn on include the fan's operating temperature, and the controller is configured to control the fan to turn on when the temperature at the target location reaches the fan's operating temperature.

4. The rice cooker according to claim 3, characterized in that, At least one of the multiple inner pots can be used for quick cooking; when there is no quick cooking program in the current cooking program and / or the number of inner pots used is at least two, the fan is turned on at a first turning temperature; when there is a quick cooking program in the current cooking program and the number of inner pots used is one, the fan is turned on at a second turning temperature; wherein, the second turning temperature is greater than the first turning temperature.

5. The rice cooker according to claim 4, characterized in that, The second opening temperature is 5°C to 15°C higher than the first opening temperature.

6. The rice cooker according to claim 3, characterized in that, The target position includes at least one of the following positions: the position at the bottom of the inner pot; the position at the lid of the inner pot; or a position at a predetermined distance from the center of the fan.

7. The rice cooker according to claim 3, characterized in that, The status adjustment parameters also include the fan speed.

8. The rice cooker according to claim 7, characterized in that, When the number of inner pots used in the current cooking program is one, the controller controls the fan to operate at a first speed; when the number of inner pots used in the current cooking program is multiple, the controller controls the fan to operate at a second speed; wherein the second speed is greater than the first speed.

9. The rice cooker according to claim 7, characterized in that, The fan speed is positively correlated with the number of inner pots used in the current cooking program.

10. The rice cooker according to claim 7, characterized in that, At least one of the multiple inner pots can perform rapid cooking; when there is no rapid cooking program in the current cooking program, the controller controls the fan to operate at a third speed; when there is a rapid cooking program in the current cooking program, the controller controls the fan to operate at a fourth speed; wherein the fourth speed is greater than the third speed.

11. The rice cooker according to claim 10, characterized in that, When multiple inner pots are cooking quickly in the current cooking program, the controller controls the fan to operate at a fifth speed; wherein the fifth speed is greater than the fourth speed.

12. The rice cooker according to claim 7, characterized in that, The state adjustment parameters also include the fan's acceleration temperature; the controller is configured to control the fan to operate at a sixth speed when the temperature at the target location does not reach the fan's acceleration temperature; and to control the fan to operate at a seventh speed when the temperature at the target location reaches the fan's acceleration temperature; wherein the seventh speed is greater than the sixth speed.

13. The rice cooker according to claim 7, characterized in that, The state adjustment parameters also include the operating phases of the cooking program, which include a first operating phase and a second operating phase following the first operating phase; the controller is configured to control the fan to operate at an eighth speed when the current cooking program is in the first operating phase; and to control the fan to operate at a ninth speed when the current cooking program is in the second operating phase; wherein the ninth speed is greater than the eighth speed.

14. The rice cooker according to claim 13, characterized in that, In the first operating phase, the water in the inner pot has not yet boiled, while in the second operating phase, the water in the inner pot has either boiled or boiled dry.

15. The rice cooker according to claim 7, characterized in that, The controller is configured to control the fan to start at an initial speed at the first moment, and to determine a tenth speed based on the cooking program and / or the number of inner pots used in the cooking program during the cooking program's runtime, and to control the fan to operate based on the tenth speed.

16. The rice cooker according to claim 15, characterized in that, The tenth rotational speed is not equal to the initial rotational speed.

17. The rice cooker according to claim 15, characterized in that, The state adjustment parameters also include parameters for controlling the fan to turn off. The controller is further configured to determine the parameters for controlling the fan to turn off based on the cooking program and / or the number of times the inner pot is used in the cooking program during the cooking program's runtime, and to control the fan to turn off based on the parameters for controlling the fan to turn off.

18. The rice cooker according to claim 16, characterized in that, The rice cooker further includes: at least one temperature measuring unit for detecting the temperature at a target location inside the housing and electrically connected to the controller; the parameters for controlling the fan to turn off include the fan's shut-off temperature, and the controller is configured to control the fan to turn off when the temperature at the target location reaches the fan's shut-off temperature.

19. The rice cooker according to claim 18, characterized in that, The controller is also configured to determine the fan's shut-off temperature based at least on the current cooking program, and to control the fan to shut off when the temperature at the target location reaches the fan's shut-off temperature.

20. The rice cooker according to claim 19, characterized in that, At least one of the multiple inner pots can perform rapid cooking; when there is no rapid cooking program in the current cooking program and / or the number of inner pots used is at least two, the fan is shut off at a first shut-off temperature; when there is a rapid cooking program in the current cooking program and the number of inner pots used is one, the fan is shut off at a second shut-off temperature; wherein, the second shut-off temperature is greater than the first shut-off temperature.

21. The rice cooker according to claim 20, characterized in that, The second shut-off temperature is 5°C to 15°C higher than the first shut-off temperature.

22. The rice cooker according to claim 1, characterized in that, The controller is also configured to control the fan to shut down at or after the second time.

23. The rice cooker according to claim 1, characterized in that, When the number of fans is at least two, the state adjustment parameters also include the number of fans in operation, and the controller is configured to control the state of the fans based on the number of fans in operation.

24. The rice cooker according to claim 23, characterized in that, When at least two of the fans are running, the controller is configured to control the state of the other fans based on the state of one of the fans.

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