Efficient heating control device for electric rice cooker

Abstract

The utility model provides a kind of electric rice cooker efficient heating control device, belong to heating control device field, it is by electric rice cooker body, bottom shell, sliding mechanism, heating control mechanism and fixed mechanism constitute, in the scheme, the setting is used for the movable plug-in drawer box by jack, by drawer box movable plug-in on bottom shell, so that drawer box is conveniently removed from bottom shell, then realize main controller and unit module are conveniently removed from bottom shell, finally realize main controller and unit module are conveniently quickly overhauled, the setting is convenient for knob to rotate by rotary groove, by knob rotation can drive shaft rotation, by shaft rotation can drive threaded rod rotation, so that threaded rod is connected in screw hole, then realize drawer box is fixed in bottom shell, when disassembling drawer box, just rotate knob, so that threaded rod is disassembled and separated from screw hole, then realize drawer box from bottom shell slide out.

Description

Technical Field

[0001] This utility model belongs to the field of heating control devices, specifically relating to a high-efficiency heating control device for rice cookers. Background Technology

[0002] As an essential kitchen appliance in modern households, the core function of a rice cooker is to cook rice by heating the inner pot evenly and efficiently. The performance of the heating control device directly determines the energy efficiency of the rice cooker, the taste of the rice, and the user experience.

[0003] In the existing technology, the heating control device is installed in the bottom shell of the rice cooker. When the heating control device malfunctions, the entire bottom shell needs to be disassembled to see the heating control device inside. Disassembling the bottom shell requires turning the rice cooker upside down, and there are many screws, making the disassembly process very cumbersome. Therefore, there is a need for a more efficient heating control device for rice cookers. Utility Model Content

[0004] The purpose of this utility model is to provide a high-efficiency heating control device for rice cookers, which aims to solve the problem that in the prior art, when the heating control device malfunctions, the entire bottom shell needs to be disassembled to see the heating control device inside.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A high-efficiency heating control device for a rice cooker, comprising: The rice cooker itself; The bottom shell is detachably connected to the bottom of the rice cooker body by bolts; Its characteristic is that it further includes: The sliding mechanism is located on the bottom shell; A heating control mechanism is mounted on a sliding mechanism. The heating control mechanism moves along with the sliding mechanism, which facilitates maintenance. The fixing mechanism is located on the sliding mechanism and the bottom shell.

[0006] As a preferred embodiment of this utility model, the sliding mechanism includes: The sliding component is located on the bottom shell; The guide component is located on the bottom shell and the sliding component.

[0007] In a preferred embodiment of this utility model, the sliding component includes a drawer box and a socket, the socket being formed on the bottom shell, and the drawer box being movably inserted into the socket.

[0008] In a preferred embodiment of this utility model, the guide component includes a positioning baffle, side plates, T-shaped guide blocks, and guide grooves. Two guide grooves are provided, each located at one of the two sides of the drawer box and symmetrically arranged. Two side plates are provided, each fixedly connected to the bottom shell and symmetrically arranged. Two T-shaped guide blocks are provided, each fixedly connected to one side plate and slidably connected within one guide groove. The positioning baffle is fixedly connected between the two side plates.

[0009] In a preferred embodiment of this utility model, the heating control mechanism includes a main controller and a unit module, wherein the main controller is fixedly connected to the bottom shell and the unit module is fixedly connected to the bottom shell.

[0010] As a preferred embodiment of this utility model, the fixing mechanism includes a knob, a rotating groove, a rotating shaft, a threaded rod, and a threaded hole. The rotating groove is formed on the bottom shell. The rotating shaft is rotatably connected between the side walls of the drawer box, and both ends of the rotating shaft rotate through the drawer box and extend to the outside of the drawer box. The knob is fixedly connected to the rotating shaft. The threaded hole is formed on the positioning baffle. The threaded rod is fixedly connected to the rotating shaft, and the threaded rod is threaded into the threaded hole.

[0011] As a preferred embodiment of this utility model, the unit module includes: The heating unit, controlled by the main controller, is used to heat the inner pot of the rice cooker; A temperature detection unit is located at the bottom of the inner liner and is used to detect the temperature at the bottom of the inner liner in real time and transmit the temperature signal to the main controller. A power drive unit is connected between the main controller and the heating unit, and is used to adjust the input power of the heating unit according to the instructions of the main controller; The main controller is configured to perform the following control methods: Before the rice boils, based on the temperature of the bottom of the inner pot fed back by the temperature detection unit, the power drive unit dynamically adjusts the input power of the heating unit so that the temperature of the bottom of the inner pot follows a preset, steady heating curve until the boiling temperature is reached.

[0012] In a preferred embodiment of this invention, the main controller is configured to control the power drive unit via pulse width modulation to dynamically adjust the input power of the heating unit.

[0013] As a preferred embodiment of this utility model, the main controller pre-stores a target temperature-time curve for the pre-boiling stage; the main controller compares the real-time temperature fed back by the temperature detection unit with the target temperature at the corresponding moment on the target temperature-time curve, and adjusts the duty cycle of the PWM in real time according to the deviation value of the comparison result.

[0014] As a preferred embodiment of this utility model, the preset heating curve is a straight line with a constant slope or a smooth curve composed of multiple line segments with different slopes.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. In this solution, the drawer box is movably connected to the bottom shell through the setting of the socket. This allows the drawer box to be easily removed from the bottom shell, thereby enabling the main controller and unit modules to be easily removed from the bottom shell, and ultimately enabling the main controller and unit modules to be quickly inspected and repaired.

[0016] 2. In this solution, the side plate is used to connect the T-shaped guide block. The T-shaped guide block is slidably connected in the guide groove, which can ensure the guidance when the drawer box moves, so that the threaded rod can accurately align with the threaded hole. The positioning baffle is used to position the drawer box and ensure that the drawer box is installed in place.

[0017] 3. In this design, the rotating groove facilitates the rotation of the knob. Rotating the knob drives the rotating shaft to rotate, which in turn drives the threaded rod to rotate. This causes the threaded rod to be threaded into the threaded hole, thus fixing the drawer box inside the bottom shell. To disassemble the drawer box, simply rotate the knob to disassemble the threaded rod from the threaded hole, allowing the drawer box to slide out of the bottom shell.

[0018] 4. In this solution, the heating process is controlled by dynamic power adjustment before boiling, rather than the traditional simple full-power heating. This avoids problems such as undercooked rice, uneven gelatinization, or overflow caused by excessively rapid heating, achieving "efficient" heating. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the bottom shell of this utility model; Figure 3 This is a schematic diagram of the positioning baffle of this utility model; Figure 4This is an exploded view of the drawer box of this utility model.

[0020] In the diagram: 1. Rice cooker body; 2. Bottom shell; 3. Drawer box; 4. Knob; 5. Rotating groove; 6. Shaft; 7. Main controller; 8. Unit module; 9. Positioning baffle; 10. Side plate; 11. T-shaped guide block; 12. Guide groove; 13. Threaded rod; 14. Threaded hole; 15. Insertion hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 The technical solution provided in this embodiment is as follows: A high-efficiency heating control device for a rice cooker comprises a rice cooker body 1, a bottom shell 2, a sliding mechanism, a heating control mechanism, and a fixing mechanism. The bottom shell 2 is detachably connected to the bottom of the rice cooker body 1 by bolts.

[0023] In a specific embodiment of this utility model, the bottom shell 2 is used to connect the drawer box 3.

[0024] Specifically, the sliding component is located on the bottom shell 2. The sliding component includes a drawer box 3 and a socket 15. The socket 15 is located on the bottom shell 2, and the drawer box 3 is movably inserted into the socket 15.

[0025] In a specific embodiment of this utility model, the drawer box 3 is movably inserted into the socket 15. The drawer box 3 is movably inserted into the bottom shell 2, making it easy to remove the drawer box 3 from the bottom shell 2. This, in turn, makes it easy to remove the main controller 7 and the unit module 8 from the bottom shell 2, and ultimately makes it easy to quickly inspect and repair the main controller 7 and the unit module 8.

[0026] Specifically, the guide components are located on the bottom shell 2 and the sliding components. The guide components include a positioning baffle 9, a side plate 10, a T-shaped guide block 11, and a guide groove 12. There are two guide grooves 12, which are respectively opened on both sides of the drawer box 3 and are symmetrically arranged. There are two side plates 10, which are fixedly connected to the bottom shell 2 and are symmetrically arranged. There are two T-shaped guide blocks 11, each of which is fixedly connected to each side plate 10 and is slidably connected to each guide groove 12. The positioning baffle 9 is fixedly connected between the two side plates 10.

[0027] In a specific embodiment of this utility model, the side plate 10 is used to connect the T-shaped guide block 11. The T-shaped guide block 11 is slidably connected in the guide groove 12, which can ensure the guidance when the drawer box 3 moves, so that the threaded rod 13 can accurately mate with the threaded hole 14. The positioning baffle 9 is used to position the drawer box 3 to ensure that the drawer box 3 is installed in place.

[0028] Specifically, the heating control mechanism is located on the sliding mechanism and moves with the sliding mechanism, which facilitates maintenance. The heating control mechanism includes a main controller 7 and a unit module 8. The main controller 7 is fixedly connected inside the bottom shell 2, and the unit module 8 is fixedly connected inside the bottom shell 2.

[0029] In a specific embodiment of this utility model, the heating control mechanism includes a main controller 7 and a unit module 8. The main controller 7 is fixedly connected inside the bottom shell 2, and the unit module 8 is fixedly connected inside the bottom shell 2.

[0030] Specifically, the fixing mechanism is located on the sliding mechanism and the bottom shell 2. The fixing mechanism includes a knob 4, a rotating groove 5, a rotating shaft 6, a threaded rod 13, and a threaded hole 14. The rotating groove 5 is opened on the bottom shell 2. The rotating shaft 6 is rotatably connected between the side walls of the drawer box 3, and both ends of the rotating shaft 6 rotate through the drawer box 3 and extend to the outside of the drawer box 3. The knob 4 is fixedly connected to the rotating shaft 6. The threaded hole 14 is opened on the positioning baffle 9. The threaded rod 13 is fixedly connected to the rotating shaft 6, and the threaded rod 13 is threaded into the threaded hole 14.

[0031] In a specific embodiment of this utility model, the rotating groove 5 facilitates the rotation of the knob 4. Rotating the knob 4 drives the rotating shaft 6 to rotate, which in turn drives the threaded rod 13 to rotate, so that the threaded rod 13 is threaded into the threaded hole 14, thereby fixing the drawer box 3 inside the bottom shell 2. When disassembling the drawer box 3, simply rotate the knob 4 to disassemble the threaded rod 13 from the threaded hole 14, thereby allowing the drawer box 3 to slide out from the bottom shell 2.

[0032] Specifically, unit module 8 includes: The heating unit, controlled by the main controller 7, is used to heat the inner pot of the rice cooker; A temperature detection unit is located at the bottom of the inner liner to detect the temperature at the bottom of the inner liner in real time and transmit the temperature signal to the main controller 7. A power drive unit is connected between the main controller 7 and the heating unit, and is used to adjust the input power of the heating unit according to the instructions of the main controller 7. The main controller 7 is configured to execute the following control methods: Before the rice boils, based on the temperature feedback from the temperature detection unit at the bottom of the inner pot, the power drive unit dynamically adjusts the input power of the heating unit, so that the temperature at the bottom of the inner pot follows a preset, steady heating curve until it reaches the boiling temperature.

[0033] In a specific embodiment of this invention, the heating process is controlled by dynamic power adjustment before boiling, rather than by traditional simple full-power heating. This avoids problems such as undercooked rice, uneven gelatinization, or overflow caused by excessively rapid heating, achieving "efficient" heating.

[0034] Specifically, the main controller 7 is configured to control the power drive unit via pulse width modulation to dynamically adjust the input power of the heating unit.

[0035] In a specific embodiment of this invention, PWM control is employed to achieve stepless and smooth adjustment of the heating unit power, resulting in fast response and high control precision. Compared with traditional relay on / off control, PWM avoids abrupt changes in heating, making temperature control more stable and precise, and helping to more perfectly track the preset temperature rise curve.

[0036] Specifically, the main controller 7 has a pre-stored target temperature-time curve for the pre-boiling stage; the main controller 7 compares the real-time temperature fed back by the temperature detection unit with the target temperature at the corresponding moment on the target temperature-time curve, and adjusts the duty cycle of the PWM in real time according to the deviation value of the comparison result.

[0037] In a specific embodiment of this invention, highly precise and adaptive temperature control is achieved by comparing real-time measured values ​​with a high-precision target curve using closed-loop feedback, and by adjusting the PWM using advanced control algorithms such as the PI algorithm. This system can automatically compensate for interference caused by fluctuations in water volume, rice volume, initial water temperature, or grid voltage, ensuring consistency in the heating process under different cooking conditions.

[0038] Specifically, the preset heating curve is either a straight line with a constant slope or a smooth curve composed of multiple line segments with different slopes.

[0039] In specific embodiments of this utility model, two feasible curve schemes are provided. The linear scheme has simple control logic and a stable system. The multi-segment curve scheme is more intelligent. By simulating the cooking philosophy of an experienced chef—"first soaking over low heat, then heating over medium heat, and finally simmering over low heat"—it can better bring out the aroma and sweetness of the rice, achieving a superior cooking effect.

[0040] The working principle or process of the high-efficiency heating control device for rice cookers provided by this utility model is as follows: The drawer box 3 is movably inserted into the bottom shell 2 through the setting of the insertion hole 15. The drawer box 3 is movably inserted into the bottom shell 2, so that the drawer box 3 can be easily moved out of the bottom shell 2. Then, the main controller 7 and the unit module 8 can be easily moved out of the bottom shell 2. The side plate 10 is used to connect the T-shaped guide block 11. The T-shaped guide block 11 is slidably connected in the guide groove 12, which can ensure the guidance when the drawer box 3 moves, so that the threaded rod 13 can be accurately connected to the threaded hole 14. The positioning baffle 9 is used to position the drawer box 3 to ensure that the drawer box 3 is installed in place. The rotating groove 5 facilitates the rotation of the knob 4. The rotation of the knob 4 can drive the rotating shaft 6 to rotate. The rotation of the rotating shaft 6 can drive the threaded rod 13 to rotate, so that the threaded rod 13 is threadedly connected in the threaded hole 14. Then, the drawer box 3 is fixed in the bottom shell 2. When disassembling the drawer box 3, simply rotate the knob 4 to disassemble the threaded rod 13 from the threaded hole 14.

[0041] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-efficiency heating control device for a rice cooker, comprising: Rice cooker body (1); The bottom shell (2) is detachably connected to the bottom of the rice cooker body (1) by bolts; Its characteristic is that it further includes: A sliding mechanism is provided on the bottom shell (2); A heating control mechanism is mounted on a sliding mechanism. The heating control mechanism moves along with the sliding mechanism, which facilitates maintenance. The fixing mechanism is located on the sliding mechanism and the bottom shell (2).

2. The high-efficiency heating control device for a rice cooker according to claim 1, characterized in that, The sliding mechanism includes: A sliding component is provided on the bottom shell (2); The guide component is located on the bottom shell (2) and the sliding component.

3. The high-efficiency heating control device for a rice cooker according to claim 2, characterized in that: The sliding component includes a drawer box (3) and a socket (15). The socket (15) is located on the bottom shell (2), and the drawer box (3) is movably inserted into the socket (15).

4. The high-efficiency heating control device for a rice cooker according to claim 3, characterized in that: The guiding components include a positioning baffle (9), a side plate (10), a T-shaped guide block (11), and a guide groove (12). There are two guide grooves (12), which are respectively opened on both sides of the drawer box (3) and are symmetrically arranged. There are two side plates (10), which are fixedly connected to the bottom shell (2) and are symmetrically arranged. There are two T-shaped guide blocks (11), each of which is fixedly connected to each side plate (10) and is slidably connected to each guide groove (12). The positioning baffle (9) is fixedly connected between the two side plates (10).

5. The high-efficiency heating control device for a rice cooker according to claim 4, characterized in that: The heating control mechanism includes a main controller (7) and a unit module (8). The main controller (7) is fixedly connected inside the bottom shell (2), and the unit module (8) is fixedly connected inside the bottom shell (2).

6. The high-efficiency heating control device for a rice cooker according to claim 5, characterized in that: The fixing mechanism includes a knob (4), a rotating groove (5), a rotating shaft (6), a threaded rod (13), and a threaded hole (14). The rotating groove (5) is opened on the bottom shell (2). The rotating shaft (6) is rotatably connected between the side walls of the drawer box (3), and both ends of the rotating shaft (6) rotate through the drawer box (3) and extend to the outside of the drawer box (3). The knob (4) is fixedly connected to the rotating shaft (6). The threaded hole (14) is opened on the positioning baffle (9). The threaded rod (13) is fixedly connected to the rotating shaft (6), and the threaded rod (13) is threaded into the threaded hole (14).

7. The high-efficiency heating control device for a rice cooker according to claim 6, characterized in that, The unit module (8) includes: The heating unit, controlled by the main controller (7), is used to heat the inner pot of the rice cooker; A temperature detection unit is located at the bottom of the inner liner and is used to detect the temperature at the bottom of the inner liner in real time and transmit the temperature signal to the main controller (7). A power drive unit is connected between the main controller (7) and the heating unit, and is used to adjust the input power of the heating unit according to the instructions of the main controller (7); The main controller (7) is configured to perform the following control methods: Before the rice boils, based on the temperature of the bottom of the inner pot fed back by the temperature detection unit, the power drive unit dynamically adjusts the input power of the heating unit so that the temperature of the bottom of the inner pot follows a preset, steady heating curve until the boiling temperature is reached.

8. The high-efficiency heating control device for a rice cooker according to claim 7, characterized in that, The main controller (7) is configured to control the power drive unit via pulse width modulation to dynamically adjust the input power of the heating unit.

9. The high-efficiency heating control device for a rice cooker according to claim 8, characterized in that, The main controller (7) has a pre-stored target temperature-time curve for the pre-boiling stage; the main controller (7) compares the real-time temperature fed back by the temperature detection unit with the target temperature at the corresponding moment on the target temperature-time curve, and adjusts the duty cycle of the PWM in real time according to the deviation value of the comparison result.

10. A high-efficiency heating control device for a rice cooker according to claim 9, characterized in that, The preset heating curve is either a straight line with a constant slope or a smooth curve composed of multiple line segments with different slopes.

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