A layered linkage load-limiting multifunction oven control method

Abstract

The present application relates to the field of oven, specifically to a layered linkage load limiting multifunctional oven control method, a master control unit collects the opening and closing working state signals of two groups of lower layer ovens in real time through a hardware communication interface; the master control unit determines the number of opened lower layer ovens according to the collected state signals; and the master control unit sets the current maximum number threshold of the upper layer induction cooker that is allowed to be opened according to the number of opened lower layer ovens. According to the working load state of the lower layer ovens, the whole machine power is adaptively distributed, and the number of opened upper layer induction cookers is automatically limited to prevent overload damage.

Description

Technical Field

[0001] This invention relates to the field of ovens, and specifically to a multi-functional oven control method with layered linkage and load limiting. Background Technology

[0002] Existing large combination ovens typically consist of a lower oven and an upper induction cooktop, both usually controlled independently with no power linkage logic between their main control circuits. In practical use, due to the large total power consumption, especially in overseas export scenarios where grid voltage is often unstable, traditional equipment usually only has single total current overload protection, which can easily lead to problems such as the entire unit tripping, power overload causing burnout of core components (such as IGBTs and heating elements), and unexpected power outages.

[0003] Existing conventional combined equipment cannot dynamically adjust the load of the upper induction cooker based on the start / stop status of the lower oven, resulting in unreasonable load distribution, poor fault tolerance, and low safety. Therefore, an intelligent linkage load limiting control method that can achieve adaptive power distribution without manual intervention will greatly improve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-functional oven control method with layered linkage and load limiting, which adaptively allocates the power of the whole machine according to the working load status of the lower oven and automatically limits the number of upper induction cookers that can be turned on, so as to adapt to the wide voltage environment overseas and prevent overload damage.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: A layered, interconnected, load-limiting multi-functional oven control method is provided. The multi-functional oven includes a main control unit, two lower-layer ovens, and seven upper-layer induction cookers. The method includes the following control steps: Step S1: The main control unit collects the opening and closing status signals of the two sets of ovens on the lower layer in real time through the hardware communication interface. Step S2: The main control unit determines the number of lower-level ovens that are currently open based on the collected status signals; Step S3: The main control unit sets the current maximum allowed number threshold number of the upper induction cooker to be turned on based on the number of lower ovens that are turned on; When neither of the two ovens on the lower level is turned on, the maximum number of ovens allowed to be turned on on the upper induction cooker is set to 7. When any group of ovens on the lower level is turned on, the maximum number of ovens allowed to be turned on on the upper level is set to 5. When the two ovens on the lower level are turned on at the same time, the maximum number of ovens allowed to be turned on on the upper level is set to 3. Step S4: When the main control unit receives the user's instruction to turn on the upper induction cooker, it determines in real time whether the number of upper induction cookers that have been turned on has reached or exceeded the maximum number threshold set in step S3; if the threshold has not been reached, the start instruction is executed; if the threshold has been reached or exceeded, the start instruction is automatically locked, and the corresponding induction cooker is prohibited from starting.

[0006] Furthermore, in step S1, the main control unit collects the working status signal of the lower oven in the following way: when the lower oven is working, its heating circuit outputs a working level signal, which is converted into a high-low level duty cycle signal and transmitted to the main control unit through the communication interface between the oven computer board and the induction cooker computer board.

[0007] Furthermore, in step S4, when the number of upper-level induction cookers turned on exceeds the current maximum allowed threshold, the program self-locking executed by the main control unit is a hardware-level lossless protection, that is, it does not cut off the power supply of the currently running upper-level induction cooker, but only prevents the start of more than the allowed number of cooktops.

[0008] Furthermore, after step S4 is executed, the main control unit refreshes the current load level in real time. If the status of the lower oven changes during operation, the main control unit automatically restores the corresponding maximum allowable number of opening thresholds and releases the load limit.

[0009] By adopting the above solution, the present invention has the following advantages compared with the prior art: 1. Unlike traditional single overload protection, it dynamically allocates power according to the actual working load; 2. Solve the problems of unstable overseas voltage, easy tripping and burn-out of high-power combination ovens; 3. No need for manual power matching; the system automatically locks, ensuring safer use and a better user experience. 4. Avoids instantaneous power peak impacts, protecting core components such as the motherboard, IGBT, and heating elements. Attached Figure Description

[0011] Figure 1 This is the circuit diagram for an oven; Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0013] like Figure 1 As shown, the circuit of the layered linkage load-limiting multi-functional oven control method mainly includes: 1. Power input and distribution module (bottom right corner).

[0014] Terminal blocks: Includes L1, N, L2, and PE. This indicates that the equipment uses a two-phase power supply or a high-power single-phase dual-live-wire design, with N being the neutral wire and PE being the safety grounding wire.

[0015] Circuit breaker / fuse: There is a protective switch near the Distributor for switching on and off the main power supply and for overload protection.

[0016] Grounding protection: PE is connected to the metal casing of the equipment and each circuit board to ensure safe use.

[0017] 2. Main control and logic processing module (large central panel at the bottom).

[0018] Core Interfaces: The yellow main control board is the brain of the entire device, labeled with control ports such as HEAT-MAIN, B-TOP (top heating), B-BOTTOM (bottom heating), B-COOKING (cooking heating), and MAIN OVEN (main oven).

[0019] Relay / switch control: A row of resistor symbols (representing heating elements) is connected at the bottom of the main control board, labeled TOP (upper tube), BOTTOM (lower tube), CONV (convection tube), GRILL (grilling tube), ELEMENT (heating element), and TRAY (baking pan heating).

[0020] Motor and lighting control: Controls LAMP (lighting lamps), FAN (fans), MOTOR (rotary motors), LEFT / RIGHT (left and right side motors), etc., and has S-LAMP and S-MOTOR interfaces.

[0021] 3. Display the user interface (bottom left corner).

[0022] Display Board: This panel consists of an LCD screen and a matrix of multiple circular buttons. Users set parameters such as temperature, cooking mode, and time here. This panel communicates with the main control board via a ribbon cable (or data cable), transmitting commands to the main control board.

[0023] 4. Heating and sensing execution module (right side and top).

[0024] Independent heating plate (upper right corner): It is marked with NTC1 and NTC2 and contains temperature sensors (thermometers) to monitor the temperature of specific areas inside the oven cavity (such as the rear left and front left) and feed the data back to the main controller; it also controls the heating elements in some areas.

[0025] Zone heating control (top left): The board with the Hot logo connects to 8 zone terminals (Left Rear, Left Front, SYNC, etc.) for precise control of multi-point heating within the oven.

[0026] 5. Auxiliary load and decoration module.

[0027] Ambient Light (above): The Mood Light is a row of blue LED indicators used to create an atmosphere or display the current operating status of the device.

[0028] Cooling / circulation system (bottom left and bottom right): Case Fan and Oven Light are located below the circuitry. The M designation indicates motor-type loads.

[0029] This system achieves linkage through hardware signal sampling and software logic locking. The specific steps are as follows: Initialization: The device is powered on, the main control unit performs a self-test, and reads the default configuration.

[0030] Status monitoring: The main control unit scans the operating signals of the lower oven in real time.

[0031] If no current / level signal is detected in the oven circuit, it is determined to be "zero load".

[0032] If a signal is detected in only one oven circuit, it is determined to be "single load".

[0033] If signals are detected in both oven circuits, it is determined to be a "dual load".

[0034] Dynamic load limiting execution: Scenario 1: When it is detected that neither of the two lower-level ovens is turned on, the main control unit grants control access to all seven upper-level induction cookers. Users can then turn on any of the cookers.

[0035] Scenario 2: When any group of ovens on the lower level is detected to be operating, the main control unit refreshes the allowed operating threshold. If the user attempts to turn on the 6th oven, the main control unit recognizes that 5 are already on, determines that the limit has been exceeded, executes a lock command, and either disables the button or triggers a buzzer alarm.

[0036] Scenario 3: When the main control unit detects that the two sets of ovens on the lower level are operating simultaneously, it will lower the operating threshold to 3. If 3 ovens are already operating, the main control unit will block the activation command for the 4th oven to ensure that the total power of the entire machine remains within a safe range.

[0037] Recovery mechanism: When the lower oven is turned off and the load is reduced, the main control unit automatically releases the corresponding lock status and restores the available number of upper induction cookers.

[0038] The above are merely specific embodiments of the present invention. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in the present invention are for reference only and are not absolute limitations. Any non-substantial modifications made using the present invention shall be considered as infringing upon the protection scope of the present invention.

Claims

1. A multi-functional oven control method with layered linkage and load limiting, characterized in that: The multi-functional oven includes a main control unit, two lower ovens, and seven upper induction cookers, and includes the following control steps: Step S1: The main control unit collects the opening and closing status signals of the two sets of ovens on the lower layer in real time through the hardware communication interface. Step S2: The main control unit determines the number of lower-level ovens that are currently open based on the collected status signals; Step S3: The main control unit sets the current maximum allowed number threshold number of the upper induction cooker to be turned on based on the number of lower ovens that are turned on; When neither of the two ovens on the lower level is turned on, the maximum number of ovens allowed to be turned on on the upper induction cooker is set to 7. When any group of ovens on the lower level is turned on, the maximum number of ovens allowed to be turned on on the upper level is set to 5. When the two ovens on the lower level are turned on at the same time, the maximum number of ovens allowed to be turned on on the upper level is set to 3. Step S4: When the main control unit receives the user's instruction to turn on the upper induction cooker, it determines in real time whether the number of upper induction cookers that have been turned on has reached or exceeded the maximum number threshold set in step S3. If the threshold is not reached, the start command is executed; if the threshold has been reached or exceeded, the start command is automatically locked, and the corresponding induction cooker is prohibited from starting.

2. The multi-functional oven control method with layered linkage and load limiting according to claim 1, characterized in that: In step S1, the main control unit collects the working status signal of the lower oven in the following way: when the lower oven is working, its heating circuit outputs a working level signal, which is converted into a high-low level duty cycle signal and transmitted to the main control unit through the communication interface between the oven computer board and the induction cooker computer board.

3. The multi-functional oven control method with layered linkage and load limiting according to claim 1, characterized in that: In step S4, when the number of upper-level induction cookers turned on exceeds the current maximum allowed threshold, the program executed by the main control unit is a hardware-level lossless protection, that is, it does not cut off the power supply of the currently running upper-level induction cooker, but only prevents the number of cookers exceeding the allowed number from starting.

4. The multi-functional oven control method with layered linkage and load limiting according to claim 1, characterized in that: After step S4 is executed, the main control unit refreshes the current load level in real time. If the status of the lower oven changes during operation, the main control unit automatically restores the corresponding maximum allowable number of opening thresholds and releases the load limit.

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