A voltage-based heat control system and steam oven

Abstract

The application relates to a voltage-based heating control system and a steam oven, and is applied to the field of electric appliances, wherein the voltage-based heating control system comprises a resistance value change module, a heat detection module and a voltage detection module; the resistance value change module is connected with the voltage detection module and the heat detection module respectively; a sliding resistance component is arranged in the resistance value change module, and the resistance value of the sliding resistance component changes with the change of the moving speed of the sliding resistance component; the voltage detection module is used for detecting the voltage value of an electric appliance to be controlled; the heat detection module is used for detecting the heat of a heating pipe; and the resistance value change module determines the moving speed and the moving direction of the sliding resistance component according to the voltage value and the placement position of a heating component, until the heat detection module detects that the heat of the heating pipe reaches a preset heating amount. Through the application, the influence of different voltage fluctuations on the heating condition of the electric appliance is solved.

Description

Technical Field

[0001] This application relates to the field of home appliances, and in particular to a voltage-based heating control system and a steam oven. Background Technology

[0002] Mains electricity refers to alternating current (AC) supplied by the public power grid, which users access through their home power grid. Household appliances are also typically powered by mains electricity to meet various daily needs.

[0003] Most household appliances, such as steam ovens, are designed with an ideal voltage range within which they can heat most effectively. However, in practical applications, due to variations in electricity demand, fluctuations in grid load, and other factors during power transmission, the mains power supplied to appliances can differ at different times and in different regions. Therefore, different voltages supplied to appliances result in different heating patterns. Current technologies typically control the heating state of appliances through temperature and time, but this approach cannot adapt to various voltage conditions and their corresponding heating patterns, thus failing to address the impact of voltage fluctuations on appliance heating.

[0004] There is currently no effective solution to the problem that existing technologies cannot address the impact of varying voltage fluctuations on the heating of home appliances. Summary of the Invention

[0005] This embodiment provides a voltage-based heating control system and a steam oven to solve the problem in related technologies that cannot address the impact of different voltage fluctuations on the heating of home appliances.

[0006] Firstly, this embodiment provides a voltage-based heating control system, wherein the system is disposed in an electrical appliance to be controlled; the electrical appliance to be controlled is provided with a component to be heated and a heating element;

[0007] The system includes a resistance change module, a heat detection module, and a voltage detection module; the resistance change module is connected to the voltage detection module and the heat detection module respectively; the resistance change module is provided with a sliding resistor component, and the resistance value of the sliding resistor component changes with the moving speed and moving direction of the sliding resistor component;

[0008] The voltage detection module is used to detect the voltage value connected to the electrical appliance to be controlled;

[0009] The heat detection module is used to detect the heat of the heating element;

[0010] The resistance change module determines the moving speed and direction of the sliding resistor component based on the voltage value and the placement position of the component to be heated, until the heat detection module detects that the heat of the heating tube has reached the preset heat output.

[0011] In some of these embodiments, the sliding resistor assembly includes: a heating resistor, a movable electromagnet, and an inductor coil;

[0012] The heating resistor is connected in parallel with the inductor coil; the movable electromagnet and the heating resistor are slidably connected.

[0013] The inductor coil is used to generate electromagnetic force according to the voltage value applied to the electrical appliance to be controlled;

[0014] The movable electromagnet is used to generate displacement according to the electromagnetic force, and to change the resistance value of the heating resistor according to the moving speed determined by the placement position of the component to be heated and the displacement.

[0015] In some embodiments, the resistance change module includes multiple valve control components, a heating resistor, and a control unit; the valve control components include valves; the valve control components and the heating resistor are connected in series; and the control unit is connected to the voltage detection module.

[0016] The control unit is used to control the opening and closing of the valve in the valve control assembly according to the voltage value connected to the electrical appliance to be controlled.

[0017] In some embodiments, the valve control assembly includes a first valve control unit and a second valve control unit;

[0018] The first valve control unit and the second valve control unit are connected in parallel;

[0019] The first valve control unit includes a first control resistor and a first valve; the first control resistor and the first valve are connected in series.

[0020] The second valve control unit includes a second control resistor and a second valve; the second control resistor and the second valve are connected in series.

[0021] In some embodiments, the control unit is further configured to, when determining that the voltage value connected to the electrical appliance to be controlled does not exceed a preset rated voltage value, sequentially close the first valve and the second valve and / or move the movable electromagnet to reduce the resistance value of the heating resistor until the heat generated by the heating tube reaches a preset heat output value.

[0022] In some embodiments, the control unit is further configured to, upon determining that the voltage value connected to the electrical appliance to be controlled exceeds a preset rated voltage value, sequentially open the first valve and the second valve and / or move the movable electromagnet to increase the resistance value of the heating resistor until the heat generated by the heating tube reaches a preset heat output value.

[0023] In some embodiments, the control unit is further configured to, when determining that the placement position of the component to be heated is in a first position, sequentially open the first valve and the second valve and / or move the movable electromagnet to increase the resistance value of the heating resistor until the heat of the heating tube reaches a preset heat output; the first position is a preset placement position close to one end of the heating tube.

[0024] In some embodiments, the control unit is further configured to, when determining that the placement position of the component to be heated is in the second position, sequentially close the first valve and the second valve and / or move the movable electromagnet to increase the resistance value of the heating resistor until the heat of the heating tube reaches a preset heat output; the second position is a preset placement position away from one end of the heating tube.

[0025] In some embodiments, a quality monitoring module is provided on the component to be heated; the quality monitoring module is connected to the control unit;

[0026] The quality monitoring module is used to monitor the quality of the food on the heating component;

[0027] The control unit is also used to move the movable electromagnet according to the quality of the food to change the resistance value of the heating resistor until the heat generated by the heating tube reaches a preset heat output.

[0028] Secondly, this embodiment provides a steam oven, which includes the voltage-based heating control system described in the first aspect above.

[0029] Compared with related technologies, the voltage-based heating control system and steam oven provided in this embodiment detect the voltage value of the appliance to be connected and the placement position of the component to be heated, and then change the resistance value of the resistor component so that the heat of the heating tube reaches a stable preset heat output. This avoids the influence of different voltage fluctuations on the heating of the appliance and achieves stable control of the heat output of the appliance to be controlled.

[0030] Details of one or more embodiments of this application are set forth in the following drawings and description to make other features, objects and advantages of this application more readily apparent. Attached Figure Description

[0031] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0032] Figure 1 A schematic diagram of the electrical appliance to be controlled is provided in the embodiments of this application;

[0033] Figure 2 This is a circuit diagram of the valve control assembly provided in an embodiment of this application;

[0034] Figure 3 This is a circuit diagram of the sliding resistor assembly provided in this specific embodiment;

[0035] Figure 4 This is a flowchart of the valve-controlled heating method provided in this specific embodiment;

[0036] Figure 5 This is a flowchart of the electromagnet-controlled heating method provided in this specific embodiment.

[0037] Reference numerals: 1. Electrical appliance to be controlled; 11. Heating control system; 111. Voltage detection module; 112. Heat detection module; 113. Resistance change module; 12. Component to be heated; 13. Heating tube; 31. Inductor coil; 32. Movable energized electromagnet; 33. Heating resistor. Detailed Implementation

[0038] To better understand the purpose, technical solution, and advantages of this application, the application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0039] Unless otherwise defined, the technical or scientific terms used in this application shall have the general meaning understood by one of ordinary skill in the art to which this application pertains. Words such as “a,” “an,” “an,” “the,” “the,” and “these” used in this application do not indicate quantitative limitation and may be singular or plural. The terms “comprising,” “including,” “having,” and any variations thereof used in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that comprises a series of steps or modules (units) is not limited to the listed steps or modules (units) but may include steps or modules (units) not listed, or may include other steps or modules (units) inherent to these processes, methods, products, or devices. Words such as “connected,” “linked,” and “coupled” used in this application are not limited to physical or mechanical connections but may include electrical connections, whether direct or indirect. “Multiple” used in this application refers to two or more. “And / or” describes the relationship between related objects, indicating that three relationships may exist; for example, “A and / or B” can represent: A alone, A and B simultaneously, and B alone. Normally, the character " / " indicates that the objects before and after it are in an "or" relationship. The terms "first," "second," "third," etc., used in this application are merely to distinguish similar objects and do not represent a specific order of objects.

[0040] Currently, due to variations in electricity demand across different regions and fluctuations in grid load, these factors can cause deviations between the actual supply voltage and the ideal voltage range designed for appliances, thus affecting their efficiency and lifespan. For example, for household appliances such as steam ovens, voltage fluctuations can cause changes in the actual power of heating elements, resulting in different heat outputs and impacting heating performance and energy consumption.

[0041] To achieve stable control of the heat output of the appliance under control, this embodiment provides a voltage-based heating control system; the voltage-based heating control system is installed in the appliance under control. Figure 1 This application provides a schematic diagram of the structure of the electrical appliance to be controlled, as shown in the embodiments. (Refer to...) Figure 1 The electrical appliance to be controlled 1 is equipped with a heating component 12 and a heating tube 13.

[0042] The voltage-based heating control system 11 includes a resistance change module 113, a heat detection module 112, and a voltage detection module 111. The resistance change module 113 is connected to the voltage detection module 111 and the heat detection module 112, respectively. A sliding resistor component is provided in the resistance change module 113, and the resistance value of the sliding resistor component changes with the moving speed and moving direction of the sliding resistor component.

[0043] The voltage detection module 111 is used to detect the voltage value connected to the electrical appliance 1 to be controlled.

[0044] The heat detection module 112 is used to detect the heat of the heating tube 13.

[0045] The resistance change module 113 determines the moving speed and direction of the sliding resistor component based on the voltage value and the placement position of the component to be heated 12, until the heat detection module 112 detects that the heat of the heating tube 13 has reached the preset heat output.

[0046] Among them, the electrical appliance to be controlled 1 includes appliances whose heat generation fluctuates due to changes in power supply voltage, and whose heat generation fluctuations need to be controlled; such as microwave ovens, induction cookers, steam ovens and air fryers in household appliances, etc., without specific limitations.

[0047] A voltage detection module 111 is installed inside the electrical appliance 1 to detect the voltage value of the power supplied to the electrical appliance 1. Based on the result of judging whether there is a difference between the voltage value supplied to the electrical appliance 1 and the rated voltage of the electrical appliance 1, it is determined whether the heat generation of the electrical appliance 1 fluctuates. When it is determined that the heat generation of the electrical appliance 1 fluctuates, based on the voltage value supplied to the electrical appliance 1 and the placement position of the heating component 12, the moving speed and moving direction of the sliding resistor component in the resistance change module 113 in the electrical appliance 1 are obtained; then, the resistance value of the sliding resistor component is changed according to the moving speed and moving direction of the sliding resistor component. When the resistance value of the sliding resistor component changes, the heat detection module 112 detects the heat of the heating tube 13 in real time until the heat of the heating tube 13 reaches the preset heat output. At this time, it indicates that the heat output of the heating tube 13 in the controlled electrical appliance 1 has reached stability, avoiding the influence of different voltage fluctuations on the heating of the electrical appliance, realizing stable control of the heat output of the controlled electrical appliance 1, and reducing the error generated by the controlled electrical appliance 1 during heating operation.

[0048] In some embodiments, the resistance change module in the heating control system includes a sliding resistor assembly, which includes: a heating resistor, a movable electromagnet, and an inductor coil; the heating resistor and the inductor coil are connected in parallel; the movable electromagnet and the heating resistor are slidably connected.

[0049] An inductor coil is used to generate electromagnetic force based on the voltage applied to the electrical appliance being controlled.

[0050] A movable electromagnet is used to generate displacement based on electromagnetic force. The moving speed and displacement are determined by the placement position of the component to be heated, thereby changing the resistance value of the heating resistor.

[0051] In this process, when a voltage is applied to the appliance being controlled, changes in its current generate a magnetic field, which in turn produces an electromagnetic force. When the current changes (e.g., increases or decreases), the strength of this magnetic field also changes accordingly, thus altering the electromagnetic force. An inductor coil generates this electromagnetic force based on the voltage change, converting it into electromagnetic force. This energizes a movable electromagnet, which is then controlled by this electromagnetic force to move mechanically. The movable electromagnet is slidably connected to a heating resistor. The movement of the movable electromagnet adjusts the relative position of the two resistors. Changes in the position of the movable electromagnet affect the resistance of the heating resistor, which in turn affects the heat generated by the heating element in the controlled appliance.

[0052] Specifically, the resistance value of the heating resistor is changed by a movable electromagnet, and the resistance value is changed by the electromagnetic force generated by the inductor coil.

[0053] In some embodiments, the resistance change module includes multiple valve control components, a heating resistor, and a control unit; the valve control component includes a valve; the valve control component and the heating resistor are connected in series; the control unit is connected to the voltage detection module; the control unit is used to control the opening and closing of the valve in the valve control component according to the voltage value connected to the electrical appliance to be controlled.

[0054] In this embodiment, another valve control component that changes the resistance value of the heating resistor is provided; exemplarily, Figure 2 This is a circuit diagram of the valve control assembly provided in an embodiment of this application. (Reference) Figure 2 The valve control assembly contains multiple valves and multiple resistors; namely valves 1 to 8 and resistors 1 to 8; one valve and one resistor are connected in series, and then the circuit formed by the series connection of the valves and resistors is connected in parallel to form the valve control assembly, which is connected in series with the heating resistor.

[0055] In some embodiments, the valve control assembly includes a first valve control unit and a second valve control unit; the first valve control unit and the second valve control unit are connected in parallel; the first valve control unit includes a first control resistor and a first valve; the first control resistor and the first valve are connected in series; the second valve control unit includes a second control resistor and a second valve; the second control resistor and the second valve are connected in series.

[0056] The first valve control unit and the second valve control unit here are not limited to a single circuit consisting of a valve and a resistor connected in series; they can refer to, for example... Figure 2 The valve control unit shown is not specifically limited here.

[0057] In some embodiments, the control unit is further configured to, upon determining that the voltage value connected to the electrical appliance to be controlled does not exceed the preset rated voltage value, sequentially close the first valve and the second valve and / or move the movable electromagnet to reduce the resistance value of the heating resistor until the heat of the heating tube reaches the preset heat output.

[0058] The control unit is also used to, when it is determined that the voltage value connected to the electrical appliance to be controlled exceeds the preset rated voltage value, sequentially open the first valve and the second valve and / or move the moving electromagnet to increase the resistance value of the heating resistor until the heat of the heating tube reaches the preset heat output value.

[0059] In a voltage-based heating control system, by determining whether the voltage value connected to the appliance to be controlled exceeds the preset rated voltage value, the resistance value of the heating resistor in the resistance change module is changed, so that the heat generated by the heating element in the appliance to be heated can reach the preset heat output state according to the changed resistance value of the heating resistor.

[0060] Specifically, the resistance value of the heating resistor is changed by controlling the sliding resistor assembly and / or the valve control assembly. When it is determined that the voltage value connected to the electrical appliance to be controlled does not exceed the preset rated voltage value, it indicates that the heat output of the heating element in the electrical appliance is lower than the preset heat output. It is necessary to change the resistance value by sensing the change in the resistance value through the electromagnetic coil, and then control the position of the moving electromagnet in the sliding resistor assembly to change the resistance value of the heating resistor.

[0061] In a sliding resistor assembly, after the controlled electrical appliance starts working, when the voltage value connected to the controlled electrical appliance is detected to be lower than the rated voltage of 220V, according to Joule's law: Q=(U / R)^2×RT, where Q represents the heat generated, U represents the voltage value, R represents the resistance value, and T represents the heating time.

[0062] It is known that voltage is directly proportional to total heat output; when the voltage decreases, the heat output of the heating element decreases. Furthermore, based on the electromagnetic formula: F = B × U × L / R, where F represents electromagnetic force, B represents magnetic flux density, U represents voltage, R represents resistance, and L represents wire length, it is known that electromagnetic force is directly proportional to voltage and inversely proportional to resistance. When the voltage decreases, the electromagnetic force of the electromagnetic coil decreases, affecting the displacement of the moving electromagnet. This movement of the moving electromagnet reduces the resistance of the heating resistor. According to Joule's law, when the resistance of the heating resistor decreases, the heat output of the heating element increases. By controlling the resistance of the heating resistor in the resistance change module, the preset heat output of the heating element is ensured.

[0063] In a parallel circuit of a valve control assembly, adding an additional resistor in parallel will reduce the total resistance of the heating resistor. For example, refer to... Figure 2The steps for changing the resistance value of the heating resistor according to the valve control component include: at the start of operation, gates 1 to 4 are closed, and gates 5 to 8 are open. When the voltage value connected to the controlled electrical appliance is detected to be lower than the rated voltage of 220V and lower than the preset voltage value X, gate 5 is closed. When the voltage value is lower than the preset voltage value 2X, gates 5 and 6 are closed. Each additional parallel resistor in the parallel circuit will reduce the total resistance of the parallel circuit, which will affect the resistance of the entire series circuit, increase the current, and thus increase the heat generation to compensate for the effect of the voltage being less than 220V.

[0064] When the detected voltage is higher than 220V, gate 1 is opened when it is higher than X, and gates 1 and 2 are closed when it is lower than 2X. This continues downwards. Each time the parallel circuit reduces one of the parallel resistors, the total resistance of the parallel circuit increases. This will affect the resistance of the entire series circuit, reduce the current, and thus increase the heat generation to compensate for the effect of the voltage being higher than 220V.

[0065] In some embodiments, the control unit is further configured to, when determining that the placement position of the component to be heated is in a first position, sequentially open the first valve and the second valve and / or move the movable electromagnet to increase the resistance value of the heating resistor until the heat of the heating tube reaches a preset heat output; the first position is a preset placement position close to one end of the heating tube.

[0066] The control unit is also used to, when determining that the placement position of the component to be heated is in the second position, sequentially close the first valve and the second valve and / or move the moving electromagnet to increase the resistance value of the heating resistor until the heat of the heating tube reaches the preset heat output; the second position is a preset placement position away from the end of the heating tube.

[0067] In this design, the heating resistor can be set as a thermistor, whose resistance increases with temperature. When the component to be heated is placed in the upper layer of the cavity inside the appliance to be controlled, heat accumulation results in lower heat dissipation efficiency in the upper layer and higher heat dissipation efficiency in the lower layer. Since the heating element is generally located in the upper part of the cavity inside the appliance to be controlled, the low heat dissipation efficiency in the upper layer of the cavity leads to heat accumulation near the heating element, increasing the resistance value of the heating resistor. This results in a faster heating speed. Therefore, it is necessary to control the valve in the valve control component to close, thereby reducing the resistance value of the heating resistor; and / or control the position of the electromagnet in the sliding resistor component to move, thereby reducing the resistance value of the heating resistor.

[0068] Furthermore, by determining the different placement positions of the component to be heated within the cavity of the controlled electrical appliance, the moving speed and direction of the energized electromagnet in the sliding resistor assembly are determined. Specifically, when the component to be heated is determined to be in the first position, close to the heating tube, the resistance value of the heating resistor needs to be reduced. In this case, the moving speed of the energized electromagnet decreases, and the moving direction is in the direction of reducing the resistance value. When the component to be heated is determined to be in the second position, far from the heating tube, the resistance value of the heating resistor needs to be increased. In this case, the moving speed of the energized electromagnet increases, and the moving direction is in the direction of increasing the resistance value.

[0069] In some embodiments, a quality monitoring module is provided on the component to be heated; the quality monitoring module is connected to the control unit; the quality monitoring module is used to monitor the quality of the food on the component to be heated; the control unit is also used to move the electromagnet according to the quality of the food to change the resistance value of the heating resistor until the heat of the heating tube reaches the preset heat output.

[0070] Furthermore, the resistance value of the heating resistor is changed according to the initial temperature of the food on the heating element until the heating element generates the preset heat output.

[0071] The following describes and illustrates this embodiment through specific examples.

[0072] Taking a steam oven as an example, this embodiment provides a steam oven, which includes the voltage-based heating control system described above.

[0073] Figure 3 This is a circuit diagram of the sliding resistor assembly provided in this specific embodiment, for reference. Figure 3 Here, the movable electromagnet is exemplified by the movable energized electromagnet 32. The heating resistor 33 is connected in parallel with the inductor coil 31; the movable energized electromagnet 32 ​​and the heating resistor 33 are slidably connected; the inductor coil 31 is used to generate electromagnetic force according to the voltage value connected to the electrical appliance to be controlled; the movable energized electromagnet 32 ​​is used to generate displacement according to the electromagnetic force, and to change the resistance value of the heating resistor 33 according to the moving speed and displacement determined by the placement position of the component to be heated.

[0074] Figure 4 This is a flowchart of the valve-controlled heating method provided in this specific embodiment. (Reference) Figure 4After identifying the voltage value of the appliance to be controlled, valves 1 to 4 are closed, and valves 5 to 8 are opened. Then, the current voltage value is determined. If the current voltage value is lower than a preset voltage value X, any one of valves 5 to 8 is closed sequentially; if the current voltage value is higher than a preset voltage value X, any one of valves 1 to 3 is opened sequentially. By judging the preset total heat output and the current heat output, multiple settings for the appliance to be controlled are determined. These settings include setting 1, setting 2, and setting 3. Setting 1 involves the heating element releasing heat for 5 seconds and then turning off for 10 seconds; setting 2 involves the heating element releasing heat for 10 seconds and then turning off for 10 seconds; setting 3 involves the heating element continuously releasing heat. Then, based on Joule's law and the heating time formula determined by the heat output, resistance, and voltage value calculated using Joule's law, the total heat output and total heating time of the heating element are calculated.

[0075] Figure 5 This is a flowchart of the electromagnet-controlled heating method provided in this specific embodiment. (Reference) Figure 5 Once the voltage value of the appliance to be controlled is identified, the voltage value affects the movement of the electromagnet, which in turn causes the heating resistor to slide until the heating element generates the preset total heat. At this point, the heating resistor is set as a thermistor, and the resistance value of the thermistor increases with the increase of temperature. By changing the resistance value of the heating resistor, the heat generation affected by the resistance value is compensated.

[0076] Next, the position of the baking tray in the steam oven was determined. When the baking tray was on the upper rack, the heat dissipation efficiency was lower than that of the lower rack. Lower heat dissipation efficiency on the upper rack leads to heat buildup near the heating element, increasing the heating element resistance more quickly, and thus reducing the heating element's heat output more quickly. Conversely, lower heat dissipation efficiency on the lower rack results in less heat buildup near the heating element, increasing the heating element resistance more slowly, and thus reducing the heating element's heat output more slowly.

[0077] After determining the position of the baking tray in the steam oven, the heat output of the heating element is recorded in real time. It is then determined whether the heat output of the heating element has reached the preset heat output. If so, the heating control is stopped; otherwise, the heat output of the heating element is controlled by the sliding resistor component.

[0078] The resistance value of the heating resistor can be updated by using the sliding resistor component alone, or by using the valve control component alone, or by combining the valve control component and the sliding resistor component. No specific limitation is made here.

[0079] It should be noted that the steps shown in the above process or in the flowchart of the accompanying figures can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0080] It should be noted that the specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementations, and will not be repeated in this embodiment.

[0081] It should be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. All other embodiments derived by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0082] Obviously, the accompanying drawings are merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar situations based on these drawings without any creative effort. Furthermore, it is understood that although the work done in this development process may be complex and lengthy, for those skilled in the art, certain design, manufacturing, or production modifications made based on the technical content disclosed in this application are merely conventional technical means and should not be considered as insufficient disclosure of this application.

[0083] The term "embodiment" in this application refers to a specific feature, structure, or characteristic described in connection with an embodiment that may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily imply the same embodiment, nor does it imply that it is mutually exclusive with or independent of other embodiments. It will be clearly or implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0084] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of patent protection. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the appended claims.

Claims

1. A voltage-based heating control system, characterized in that, The system is installed in the electrical appliance to be controlled; the electrical appliance to be controlled is equipped with a component to be heated and a heating element. The system includes a resistance change module, a heat detection module, and a voltage detection module; the resistance change module is connected to the voltage detection module and the heat detection module respectively; the resistance change module is provided with a sliding resistor component, and the resistance value of the sliding resistor component changes with the moving speed and moving direction of the sliding resistor component; The sliding resistor assembly includes: a heating resistor, a movable electromagnet, and an inductor coil; the heating resistor and the inductor coil are connected in parallel; the movable electromagnet and the heating resistor are slidably connected; the inductor coil is used to generate electromagnetic force according to the voltage value connected to the electrical appliance to be controlled; the movable electromagnet is used to generate displacement according to the electromagnetic force, and to change the resistance value of the heating resistor according to the moving speed determined by the placement position of the component to be heated and the displacement; The resistance change module includes multiple valve control components, heating resistors, and a control unit; the valve control component includes a valve; the valve control component and the heating resistor are connected in series; the control unit is connected to the voltage detection module; the control unit is used to control the opening and closing of the valve in the valve control component according to the voltage value connected to the electrical appliance to be controlled; The voltage detection module is used to detect the voltage value connected to the electrical appliance to be controlled; The heat detection module is used to detect the heat of the heating element; The resistance change module determines the moving speed and direction of the sliding resistor component based on the voltage value and the placement position of the component to be heated, until the heat detection module detects that the heat of the heating tube has reached the preset heat output.

2. The voltage-based heating control system according to claim 1, characterized in that, The valve control assembly includes a first valve control unit and a second valve control unit; The first valve control unit and the second valve control unit are connected in parallel; The first valve control unit includes a first control resistor and a first valve; the first control resistor and the first valve are connected in series. The second valve control unit includes a second control resistor and a second valve; the second control resistor and the second valve are connected in series.

3. The voltage-based heating control system according to claim 2, characterized in that, The control unit is further configured to, when determining that the voltage value connected to the electrical appliance to be controlled does not exceed the preset rated voltage value, sequentially close the first valve and the second valve and / or move the movable electromagnet to reduce the resistance value of the heating resistor until the heat generated by the heating tube reaches the preset heat output value.

4. The voltage-based heating control system according to claim 2, characterized in that, The control unit is further configured to, when determining that the voltage value connected to the electrical appliance to be controlled exceeds the preset rated voltage value, sequentially open the first valve and the second valve and / or move the movable electromagnet to increase the resistance value of the heating resistor until the heat generated by the heating tube reaches the preset heat output value.

5. The voltage-based heating control system according to claim 2, characterized in that, The control unit is further configured to, when determining that the placement position of the component to be heated is in the first position, sequentially open the first valve and the second valve and / or move the movable electromagnet to increase the resistance value of the heating resistor until the heat of the heating tube reaches the preset heat output; the first position is a preset placement position close to one end of the heating tube.

6. The voltage-based heating control system according to claim 2, characterized in that, The control unit is further configured to, when determining that the placement position of the component to be heated is in the second position, sequentially close the first valve and the second valve and / or move the movable electromagnet to increase the resistance value of the heating resistor until the heat of the heating tube reaches the preset heat output; the second position is a preset placement position away from the end of the heating tube.

7. The voltage-based heating control system according to claim 1, characterized in that, The component to be heated is equipped with a quality monitoring module; the quality monitoring module is connected to the control unit. The quality monitoring module is used to monitor the quality of the food on the heating component; The control unit is also used to move the movable electromagnet according to the quality of the food to change the resistance value of the heating resistor until the heat generated by the heating tube reaches a preset heat output.

8. A steam oven, characterized in that, The steam oven includes a voltage-based heating control system as described in any one of claims 1 to 7.

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