Control Method, Central Range Hood System, Device, and Storage Medium

Abstract

The present invention relates to the technical field of central range hood systems, and more particularly to a control method, a central range hood system, a device, and a computer-readable storage medium. The system can adjust the damper opening angle and fan frequency based on the open state of terminals on different floors. The damper opening angle adjustment and fan frequency adjustment work in tandem, and the coordinated effect of damper opening angle adjustment on different floors enables simple, efficient, and reliable uniform flow distribution across floors.

Description

Technical Field

[0001] The present invention relates to the technical field of central range hood systems, and in particular to a control method, a central range hood system, a device, and a computer-readable storage medium. Background Art

[0002] Currently, most high-rise buildings utilize indoor range hoods, smoke ducts, check valves, and a public flue, connecting them. This allows kitchen fumes to be exhausted from the indoor powered range hood through the smoke duct into the public flue. Unlike cooking methods abroad, diverse cooking habits and cuisines in China result in a significant amount of fumes during the cooking process. Consequently, major range hood manufacturers have developed range hoods with high air volume and pressure. This, on the one hand, leads to uneven pressure distribution within the public flue, resulting in poor exhaust flow. This results in better exhaust efficiency on higher floors and worse exhaust efficiency on lower floors, particularly during peak cooking times. Furthermore, range hoods with high air volume and pressure are noisy and consume a lot of electricity.

[0003] The central range hood was invented to solve the problems of poor oil fume exhaust and high noise. It generates power by placing a fan at the top of the public flue, and adjusts the angle of the power distribution valve where the kitchen smoke pipe in the resident's home is connected to the public flue to achieve uniform flow distribution on each floor, thereby achieving the purpose of smooth smoke exhaust and reducing noise.

[0004] However, existing central range hoods cannot be adaptively adjusted according to the total number of floors and the power-on status of residents' homes, and cannot achieve optimal flow distribution. Summary of the Invention

[0005] According to one aspect of the present invention, a control method is proposed for controlling a central range hood system, which can achieve uniform flow distribution on each floor in a simple, efficient and reliable manner.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A control method for controlling a central range hood system, the central range hood system comprising:

[0008] A fan, located at the top of the building's public flue, is used to generate suction force;

[0009] Air valves are installed in the kitchen flues of users on different floors;

[0010] Terminal, located in the kitchen;

[0011] Wherein, the control method includes:

[0012] In response to a user on the current floor turning on the terminal, adjusting the opening angle of the air valve of the user on the current floor according to the opening status of the terminals below the current floor;

[0013] Sending the terminal power-on status to the fan, so that the fan adjusts the frequency of the fan according to the power-on status of the terminals on all floors;

[0014] The terminal opening status is sent to other floors so that the air valves of users on other floors adjust the opening angles of the air valves of users on other floors according to the opening status of the terminals below the other floors.

[0015] As a preferred solution, adjusting the opening angle of the air valve of the user on the current floor according to the opening status of the terminal below the current floor includes:

[0016] The opening angle is adjusted according to the following formula:

[0017] β=a-k1*b-k2*c;

[0018] Among them, a is the maximum angle of the air valve opening, k1 is the start-up coefficient, b is the number of the terminals below the current floor that are in the open state, k2 is the shutdown coefficient, and c is the number of the terminals below the current floor that are continuously closed starting from the lowest floor.

[0019] As a preferred solution, the method of adjusting the opening angle of the air valve of the users on other floors according to the opening state of the terminals below the other floors includes:

[0020] The opened air valve is adjusted to the opening angle according to the following formula:

[0021] β=a-k1*b-k2*c;

[0022] Among them, a is the maximum angle of the air valve opening; k1 is the start-up coefficient, b is the number of the terminals in the open state below the floor where the air valve is opened, k2 is the shutdown coefficient, and c is the number of the terminals below the floor where the air valve is opened that are closed continuously starting from the lowest floor.

[0023] As a preferred solution, k1 and k2 are determined by the following steps:

[0024] For the preset total number of floors, multiple corresponding β groups obtained through experiments 实验 、a 实验 、b 实验 and c 实验 ;

[0025] Based on the fitting algorithm, the β 实验 、a 实验 、b 实验 and c 实验 Perform data fitting to obtain k1 and k2 corresponding to the total number of preset floors;

[0026] For different preset total numbers of floors, the above steps are repeated to obtain k1 and k2 corresponding to different preset total numbers of floors.

[0027] As a preferred solution, the fitting algorithm adopts a linear fitting method.

[0028] As a preferred solution, the method of adjusting the frequency of the fan according to the power-on status of the terminals on all floors includes:

[0029] The frequency of the fan is adjusted according to the following formula:

[0030] f=k3*(x-1)+d;

[0031] Wherein, f is the frequency of the fan, k3 is the increment step, x is the number of terminals on all floors that are in the turned-on state, and d is the starting frequency of the fan.

[0032] As a preferred solution, the k3 and the d are determined by the following steps:

[0033] For the preset total number of floors, multiple sets of corresponding x obtained through experiments 实验 and f 实验 ;

[0034] Based on the fitting algorithm, multiple groups of corresponding x 实验 and f 实验 Performing data fitting to obtain k3 and d corresponding to the preset total number of floors;

[0035] Repeat the above steps for different preset total numbers of floors to obtain k3 and d corresponding to different preset total numbers of floors.

[0036] As a preferred solution, the fitting algorithm is a linear fitting method.

[0037] As a preferred solution, when the total number of floors exceeds N, k1 is 3 to 5 and k2 is 0.5 to 0.9; when the total number of floors does not exceed N, k1 is 1 to 3 and k2 is 0.1 to 0.4; N is the fan preset value.

[0038] As a preferred solution, when the total number of floors exceeds N, d is 25 to 30; when the total number of floors does not exceed N, d is 20 to 25; k3 is 1 to 5; N is the fan preset value.

[0039] As a preferred solution, the sending of the terminal power-on status to other floors includes:

[0040] The fan periodically sends the opening status of the terminals on all floors to all the air valves.

[0041] As a preferred solution, the control method further includes:

[0042] In response to a user on the current floor turning off the terminal, adjusting the air valve of the user on the current floor to close;

[0043] Sending the terminal off status to the fan, so that the fan adjusts the frequency of the fan according to the on status of the terminals on all floors;

[0044] The terminal closing status is sent to other floors so that the air valves of users on other floors adjust the opening angles of the air valves of users on other floors according to the opening status of the terminals below the other floors.

[0045] As a preferred solution, the terminal includes an unpowered terminal and / or a powered terminal.

[0046] As a preferred solution, the terminal is connected to the air valve via wired communication and / or wireless communication;

[0047] The air valve is connected to the fan via wired communication and / or wireless communication;

[0048] The air valves are connected to each other via wired communication and / or wireless communication.

[0049] According to another aspect of the present invention, a control method is proposed for controlling a central range hood system, which can achieve uniform flow distribution on each floor in a simple, efficient and reliable manner.

[0050] To achieve the above object, the present invention adopts the following technical solutions:

[0051] A control method for controlling a central range hood system, the central range hood system comprising:

[0052] A fan, located at the top of the building's public flue, is used to generate suction force;

[0053] Air valves are installed in the kitchen flues of users on different floors;

[0054] Terminal, located in the kitchen;

[0055] The control method includes:

[0056] In response to a user on the current floor turning on the terminal, the frequency of the fan is adjusted according to the turning-on status of the terminals on all floors.

[0057] As a preferred solution, the control method further includes:

[0058] In response to the user on the current floor turning off the terminal, the frequency of the fan is adjusted according to the opening status of the terminals on all floors.

[0059] As a preferred solution, adjusting the frequency of the fan according to the power-on status of the terminals on all floors includes:

[0060] The frequency of the fan is adjusted according to the following formula:

[0061] f=k3*(x-1)+d;

[0062] Wherein, f is the frequency of the fan, k3 is the increment step, x is the number of terminals in the turned-on state on all floors, and d is the starting frequency of the fan.

[0063] As a preferred solution, the k3 and the d are determined by the following steps:

[0064] For the preset total number of floors, multiple sets of corresponding x obtained through experiments 实验 and f 实验 ;

[0065] Based on the fitting algorithm, multiple groups of corresponding x 实验 and f 实验 Data fitting is performed to obtain k3 and d corresponding to the total number of preset floors.

[0066] Repeat the above steps for different preset total numbers of floors to obtain k3 and d corresponding to different preset total numbers of floors.

[0067] As a preferred solution, when the total number of floors exceeds N, d is 25 to 30; when the total number of floors does not exceed N, d is 20 to 25; k3 is 1 to 5; N is the fan preset value.

[0068] As a preferred solution, the control method further includes:

[0069] In response to the user on the current floor turning on the terminal, the terminal opening status is sent to other floors, so that the air valves of the users on other floors adjust the opening angles of the air valves of the users on other floors according to the opening status of the terminals below the other floors.

[0070] As a preferred solution, the method of adjusting the opening angle of the air valve of users on other floors according to the opening state of the terminals below the other floors includes:

[0071] The opened air valve is adjusted to the opening angle according to the following formula:

[0072] β=a-k1*b-k2*c;

[0073] Among them, a is the maximum angle of the air valve opening, k1 is the start-up coefficient, b is the number of the terminals in the open state below the floor where the air valve is opened, k2 is the shutdown coefficient, and c is the number of the terminals below the floor where the air valve is opened that are closed continuously starting from the lowest floor.

[0074] As a preferred solution, k1 and k2 are determined by the following steps:

[0075] For the preset total number of floors, multiple corresponding β groups obtained through experiments 实验 、a 实验 、b 实验 and c 实验 ;

[0076] Based on the fitting algorithm, multiple groups of corresponding β experiments, a 实验 、b 实验 and c 实验 Perform data fitting to obtain k1 and k2 corresponding to the total number of preset floors;

[0077] For different preset total numbers of floors, the above steps are repeated to obtain k1 and k2 corresponding to different preset total numbers of floors.

[0078] As a preferred solution, the fitting algorithm adopts a linear fitting method.

[0079] As a preferred solution, when the total number of floors exceeds N, k1 is 3 to 5 and k2 is 0.5 to 0.9; when the total number of floors does not exceed N, k1 is 1 to 3 and k2 is 0.1 to 0.4; N is the fan preset value.

[0080] As a preferred solution, in response to the only terminal in an open state being closed, the fan is adjusted to be closed.

[0081] As a preferred solution, the terminal includes an unpowered terminal and / or a powered terminal.

[0082] As a preferred solution, the terminal is connected to the air valve via wired communication and / or wireless communication;

[0083] The air valve is connected to the fan via wired communication and / or wireless communication;

[0084] The air valves are connected to each other via wired communication and / or wireless communication.

[0085] According to another aspect of the present invention, a control method is provided for controlling a central range hood system, which can achieve uniform flow distribution on each floor simply, efficiently and reliably.

[0086] To achieve the above object, the present invention adopts the following technical solutions:

[0087] A control method for controlling a central range hood system, the central range hood system comprising:

[0088] Air valves are installed in the kitchen flues of users on different floors;

[0089] Terminal, located in the kitchen;

[0090] The control method includes:

[0091] In response to the user on the current floor turning on the terminal, the opening angle of the air valve of the users on other floors is adjusted according to the opening status of the terminals below other floors.

[0092] As a preferred solution, the control method includes:

[0093] In response to the user on the current floor turning off the terminal, the opening angle of the air valve of the users on other floors is adjusted according to the opening status of the terminals below other floors.

[0094] As a preferred solution, adjusting the opening angle of the air valve of the users on other floors according to the opening status of the terminals below other floors includes:

[0095] The opening angle of the opened air valve is adjusted according to the following formula:

[0096] β=a-k1*b-k2*c;

[0097] Among them, a is the maximum opening angle of the air valve, k1 is the start-up coefficient, b is the number of terminals in the open state below the floor where the air valve is opened, k2 is the shutdown coefficient, and c is the number of terminals below the floor where the air valve is opened that are closed continuously starting from the lowest floor.

[0098] As a preferred solution, k1 and k2 are determined by the following steps:

[0099] For the preset total number of floors, multiple corresponding β groups obtained through experiments 实验 、a实验 、b 实验 and c 实验 ;

[0100] Based on the fitting algorithm, the β 实验 、a 实验 、b 实验 and c 实验 Perform data fitting to obtain k1 and k2 corresponding to the preset total number of floors;

[0101] For different preset total numbers of floors, the above steps are repeated to obtain k1 and k2 corresponding to different preset total numbers of floors.

[0102] As a preferred solution, the fitting algorithm is a linear fitting method.

[0103] As a preferred solution, when the total number of floors exceeds N, k1 is 3 to 5 and k2 is 0.5 to 0.9; when the total number of floors does not exceed N, k1 is 1 to 3 and k2 is 0.1 to 0.4; N is the fan preset value.

[0104] As a preferred solution, the terminal includes an unpowered terminal and / or a powered terminal.

[0105] As a preferred solution, the terminal is connected to the air valve via wired communication and / or wireless communication;

[0106] The air valve is connected to the fan via wired communication and / or wireless communication;

[0107] The air valves are connected to each other via wired communication and / or wireless communication.

[0108] According to another aspect of the present invention, a central range hood system is provided, which can achieve uniform flow distribution on each floor in a simple, efficient and reliable manner.

[0109] To achieve the above object, the present invention adopts the following technical solutions:

[0110] A central range hood system, comprising:

[0111] A fan, located at the top of the building's public flue, is used to generate suction force;

[0112] Air valves are installed in the kitchen flues of users on different floors;

[0113] Terminal, located in the kitchen;

[0114] The central range hood system also includes:

[0115] a damper adjustment module configured to, in response to the terminal on the current floor being in an open state, adjust the opening angle of the damper for the user on the current floor according to the open state of the terminals below the current floor;

[0116] The fan frequency adjustment module is configured to adjust the frequency of the fan according to the current power-on status of the terminals on all floors.

[0117] According to another aspect of the present invention, there is provided a device comprising:

[0118] one or more processors;

[0119] a storage device for storing one or more programs;

[0120] When the one or more programs are executed by the one or more processors, the one or more processors implement the control method described above.

[0121] According to another aspect of the present invention, a computer-readable storage medium is provided, on which a computer program is stored, wherein the program implements the control method described above when executed by a processor.

[0122] The beneficial effects of the present invention are:

[0123] The control method and central range hood system provided by the present invention can adjust the air valve opening angle and the fan frequency according to the opening status of the terminals on different floors. The air valve opening angle adjustment and the fan frequency adjustment work together, and the synergistic effect of the air valve opening angle adjustment on different floors can achieve the effect of simple, efficient and reliable uniform distribution of flow on each floor. BRIEF DESCRIPTION OF THE DRAWINGS

[0124] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without any creative work.

[0125] Figure 1 is a structural diagram of a central range hood system provided in Example 1 of the present invention;

[0126] Figure 2 is a flow chart of a control method provided in Embodiment 2 of the present invention;

[0127] Figure 3 is a flow chart of a control method provided in Embodiment 3 of the present invention;

[0128] Figure 4 is a flow chart of a control method provided by a fourth embodiment of the present invention;

[0129] Figure 5 This is a schematic diagram of the device provided in Example 5 of the present invention.

[0130] The following are marked in the figure:

[0131] 100-Central range hood system; 200-Cloud platform; 300-Building; 301-Floor;

[0132] 1- fan; 2- damper; 3- terminal; 4- public flue; 5- damper adjustment module; 6- fan frequency adjustment module; 7- household flue;

[0133] 12-Device; 14-External device; 16-Processing unit; 18-System memory; 20-Network adapter; 22-I / O interface; 24-Display; 28-Bus; 30-RAM; 32-Cache memory; 34-Storage system; 40-Program / Utility; 42-Program module. DETAILED DESCRIPTION

[0134] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate structural elements relevant to the present invention and not the entire structural structure.

[0135] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and may refer to the interconnection of structures within two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific contexts.

[0136] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0137] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0138] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0139] Example 1

[0140] This embodiment provides a central range hood system 100. Figure 1 As shown, building 300 includes multiple floors 301, and the central range hood system 100 includes a fan 1, dampers 2, terminals 3, and a public flue 4. The public flue 4 runs through the building 300 along its height. Each floor 301 is provided with a resident flue 7, which is connected to the public flue 4. The resident flue 7 is connected to the terminal 3 (primarily located in the kitchen) on the corresponding floor 301. A damper 2 is provided at the connection point between each resident flue 7 and the public flue 4. Fan 1 is installed at the air outlet of the public flue 4 at the roof of the building 300 to generate suction force. Fan 1 exhausts the oil smoke inside the public flue 4. Adjusting the frequency of fan 1 and the opening angle of damper 2 can jointly adjust the flow rate and exhaust volume of each floor 301, achieving a smooth exhaust effect for each terminal 3.

[0141] For example, the air valve 2 is an air valve that can be opened and closed by rotating a motor, and also has the function of a check valve, also called an electric check valve, which can solve the problem of smoke backflow and odor in the central range hood system 100.

[0142] For example, the terminal 3 can be an unpowered terminal and / or a powered terminal. Powered terminals include range hoods or integrated stoves. Unpowered terminals are range hoods without built-in exhaust motors. A central range hood system 100 constructed using unpowered terminals is a centralized central range hood system 100. A range hood is a range hood with a built-in exhaust motor. An integrated stove is a multifunctional kitchen appliance with a built-in exhaust motor that is integrated with other kitchen appliances (such as a dishwasher, gas stove, disinfection cabinet, and storage cabinet). A central range hood system 100 constructed using both a range hood and an integrated stove is a distributed central range hood system 100.

[0143] For example, the damper 2 and the fan 1 can be connected to the controller via wired or wireless communication, respectively. The controller can be a multifunctional control circuit that supports wireless communication (2G / 3G / 4G / 5G, NB-IoT, LoRa, WiFi, BT, ZigBee) and wired communication (CAN, RS485), and can output a control signal to the damper 2 to adjust the opening angle of the damper, and can also output a control signal to the fan 1 to adjust the speed of the fan 1, and can also detect the opening and closing status of the terminal 3. The controller can realize mutual communication between the terminal 3 and the damper 2 and the fan 1 respectively. In addition, the controller can also realize the linkage between the terminal 3 and the smart kitchen appliance by using functions such as WiFi, BT, ZigBee, etc. The controller can receive the linkage instruction to control the adjustment of the opening angle of the damper, and the smart kitchen appliance realizes linkage within the local area network, thereby enhancing the scalability of the central range hood system 100.

[0144] In addition, the central range hood system 100 further includes a controller, which includes a damper adjustment module 5 and a fan frequency adjustment module 6. The damper adjustment module 5 is configured to, in response to the terminal 3 on the current floor 301 being in the open state, adjust the opening angle of the damper 2 for users on the current floor 301 based on the open states of the terminals 3 below the current floor 301. The fan frequency adjustment module is configured to adjust the frequency of the fan 1 based on the open states of the terminals 3 on all current floors 301. This embodiment adjusts the opening angle of the damper 4 and the frequency of the fan 1 based on the open states of the terminals 3 on different floors 301. The adjustment of the damper 4 opening angle works in tandem with the adjustment of the fan 1 frequency. The coordinated effect of adjusting the damper 4 opening angle on different floors 301 enables simple, efficient, and reliable uniform flow distribution across all floors 301.

[0145] As a preferred solution, the air valve adjustment module 5 can adjust the opening angle of the air valve according to the following formula: β = a-k1*b-k2*c;

[0146] Where a is the maximum opening angle of the damper, k1 is the power-on coefficient, b is the number of terminals below the current floor that are in the open state, k2 is the power-off coefficient, and c is the number of terminals below the current floor that are closed consecutively, starting from the lowest floor. A more accurate reading of the damper opening angle on the current floor can further improve the uniform distribution of flow across all floors of the central range hood system 100. The greater the number of terminals below the current floor that are in the open state, the smaller the damper opening angle on that floor, achieving uniform distribution and adjustment of the common flue flow.

[0147] The air valve adjustment module 5 can also automatically adjust and fit the coefficients k1 and k2 of the above formula according to the total number of floors, so that the central range hood system 100 can adapt to buildings 300 with different total numbers of floors.

[0148] The air valve adjustment module 5 can also send a terminal opening signal to the fan frequency adjustment module 6 according to the corresponding terminal opening action. The fan frequency adjustment module 6 adjusts the frequency of the fan 1 according to the updated opening status of the terminals on all floors.

[0149] Specifically, fan frequency adjustment module 6 controls the frequency of fan 1 according to f = k3*(x-1)+d, where f is the fan frequency, k3 is the incremental step size, x is the number of terminals on all floors that are in the open state, and d is the fan's starting frequency. This formula allows for a more accurate fan frequency, further improving the uniform distribution of flow across all floors of the central range hood system 100. The greater the number of terminals on all floors that are open, the higher the fan frequency and the greater the air volume, achieving the goal of evenly distributing and adjusting the common flue flow.

[0150] In addition, if the fan frequency adjustment module 6 detects that the only terminal 5 in the on state is turned off, the fan frequency adjustment module 6 adjusts the fan 1 to turn off, which can achieve energy saving and avoid energy waste.

[0151] The current floor terminal 3, the current floor damper 2, or the fan 1 can all send the opening or closing signal of the terminal 3 on the current floor 301 to the dampers 2 on other floors 301. The dampers 2 on other floors can then adjust their opening angles based on the status of the dampers on all floors 301, thereby enabling better flow control on each floor 301 of the central range hood system 100. The adjustment formula for the dampers 2 on other floors is similar to the adjustment formula for the damper 4 on the current floor and will not be repeated here.

[0152] As a preferred solution, the fan frequency adjustment module 6 can also serve as a temporary storage unit for the opening status of the air valves 2 on all floors. That is to say, the fan frequency adjustment module 6 can obtain the opening status of the air valves 2 on different floors. The fan frequency adjustment module 6 periodically sends the opening status of the air valves 2 on all floors 301 to the air valve adjustment modules 5 on all floors 301, which can reduce the number of excessive information interactions between the fan frequency adjustment module 6 and all air valve adjustment modules 5, reduce redundant information in the controller, effectively improve the operating efficiency of the controller, avoid controller overheating, and increase the service life of the controller.

[0153] Furthermore, the existing central range hood system 100 includes a fan 1, a terminal 3, a controller, and a sensor. The sensor sets a preset air volume and detects the current air volume. The controller compares the preset air volume with the current air volume to control the gear position of the terminal 3 and the speed or frequency of the fan 1. The existing central range hood system 100 requires the sensor to provide feedback on the current air flow. This sensor is prone to failure after long-term operation in an oily fume environment, resulting in a failure to evenly distribute air flow across floors 301 and poor reliability. Furthermore, sensor maintenance and replacement are difficult, and the varying levels of finishes on different floors 301 make sensor maintenance and replacement costly.

[0154] The central range hood system 100 of this embodiment eliminates the need for sensors, overcoming the drawbacks of sensor failure leading to ineffective flow distribution and complex flow adjustment. It offers simple, efficient, and reliable installation. It also addresses the difficulties and high costs associated with maintaining and replacing the central range hood system 100 due to the sensor configuration.

[0155] The controller utilizes a baseboard and card design. By replacing the card, the aforementioned wired and wireless communication functions can be implemented. The card provides a variety of internal functions and interfaces to accommodate different types of terminals 3. Specifically, the card functions as a smart socket, with internal load current detection and position switch detection. For a centralized central range hood system 100, the position switch is used to identify the on / off status of an unpowered terminal. For a distributed central range hood system 100, the load current is used to identify the on / off status of the range hood / integrated stove. This makes it compatible with different brands and types of range hoods and integrated stoves, and the controller is applicable to distributed central range hood systems 100.

[0156] Specifically, the central range hood system 100 also includes a gear switch, which is electrically connected to the board card. The gear switch includes an open gear and a closed gear. When an unpowered terminal is required to exhaust air, the operator adjusts the gear switch to the open gear. The gear switch can send a signal to the board card, and the board card sends a corresponding signal to control the opening of the air valve 4 on the current floor. The board card can also send a corresponding signal to the fan 1 to adjust the frequency of the fan 1. The board card on the current floor 301 can also send a signal to the board cards on other floors 301, and the board cards on other floors control the opening angle of the corresponding air valve 4 for adjustment.

[0157] Specifically, the circuit of the powered terminal is electrically connected to the board card, and the board card can identify the power status of the powered terminal. When the powered terminal is powered on, the powered terminal sends a power-on signal to the board card. After the board card on the current floor 301 receives that the powered terminal is in a working state, it controls the corresponding air valve 4 to open to a certain degree, and can also control the frequency of fan 1 and the opening of the air valves on other floors 301.

[0158] In addition, the board has a sensor communication interface. Through the combined application and algorithm design of load current detection and sensor detection (wind pressure, wind speed, temperature, acceleration, particulate matter concentration, etc.), it can solve the problem that the range hood and integrated stove lighting power and weak gear power are close to each other and cannot accurately identify the gear position of the range hood and integrated stove. The sensor is based on the detection of the characteristics related to the fans of the range hood and integrated stove. The reliability of the combined detection is better than that of a single detection. Specifically, the board has a gear switch detection inside, which can be connected to various brands of non-powered terminals. For the centralized central range hood system 100, the terminal switch status can be identified through the gear switch, which can be applied to the centralized central range hood system 100.

[0159] In summary, the controller can be applied to both the distributed central range hood system 100 and the centralized central range hood system 100, enhancing the universality of the central range hood system 100 to terminals, range hoods, and integrated stoves of different brands and types, eliminating the dependence on the brands and types of terminals, range hoods, and integrated stoves, and also eliminating the dependence on the type of terminal 3.

[0160] In addition, the central range hood system 100 also includes a fire damper, which is also installed on the resident's flue 7. The setting of the fire damper can prevent the fire on a certain floor 301 from spreading to other floors 301, ensuring the personal safety and property safety of residents on other floors 301 to the greatest extent.

[0161] In addition, the central range hood system 100 also includes a hood and a control panel. The control panel is electrically connected to the air valve 2. When the user presses the power button on the control panel, the control panel sends a start signal to the air valve 2. The air valve 2 opens according to the start signal. After the air valve 2 opens, it sends its own operating condition information to the controller.

[0162] Example 2

[0163] Figure 2 This is a flow chart of a control method provided in the second embodiment of the present invention. This embodiment is applicable to the case of adjusting the flow rate of each floor of the central range hood system. The method can be executed by the air valve of the current floor user in the embodiment of the present invention. The air valve of the current floor user can be implemented in software and / or hardware, such as Figure 2 As shown, the method specifically includes the following steps:

[0164] S110 , in response to a user on the current floor turning on the terminal, adjusting the opening angle of the air valve of the user on the current floor according to the opening status of the terminals below the current floor.

[0165] The terminals include non-powered terminals and / or powered terminals, and the method has good universality for different types of terminals.

[0166] The terminal and the damper are connected via wired and / or wireless communication, for example, supporting wireless communication (2G / 3G / 4G / 5G, NB-IoT, LoRa, WiFi, BT, ZigBee) and wired communication (CAN, RS485).

[0167] Among them, since the opening state of the air valve on the previous floor is greatly affected by the opening state of the terminals below the current floor, the air valve on the current floor of this embodiment adjusts the opening angle of the air valve of the user on the current floor according to the opening state of the terminals below the current floor, which can achieve precise adjustment of the opening state of the air valve on the current floor.

[0168] As a preferred solution, the opening angle is adjusted using the following formula:

[0169] β=a-k1*b-k2*c;

[0170] Among them, a is the maximum angle of the air valve opening, k1 is the start-up coefficient, b is the number of the terminals below the current floor that are in the open state, k2 is the shutdown coefficient, and c is the number of the terminals below the current floor that are continuously closed starting from the lowest floor.

[0171] The above formula allows for a more accurate calculation of the damper opening angle on the current floor, further improving the uniform distribution of flow across all floors of the central range hood system 100. The more terminals powered on below the current floor, the smaller the damper opening angle on that floor, achieving uniform distribution of flow across the public flue.

[0172] For example, the current floor damper is on the 8th floor, with the 1st floor open, the 2nd floor open, the 3rd floor open, the 4th floor closed, the 5th floor closed, the 6th floor open, the 7th floor open, and the 8th floor open. b is 5 and c is 3. The current floor damper is on the 8th floor, with the 1st floor closed, the 2nd floor open, the 3rd floor open, the 4th floor closed, the 5th floor closed, the 6th floor open, the 7th floor open, and the 8th floor open. b is 4 and c is 0.

[0173] In addition, k1 and k2 are determined by the following steps:

[0174] For the preset total number of floors, multiple corresponding β groups obtained through experiments 实验 、a 实验 、b 实验 and c 实验 ;

[0175] Based on the fitting algorithm, the β 实验 、a 实验 、b 实验 and c 实验 Perform data fitting to obtain k1 and k2 corresponding to the total number of preset floors;

[0176] For different preset total numbers of floors, the above steps are repeated to obtain k1 and k2 corresponding to different preset total numbers of floors.

[0177] Automatically adjusting the fitting formula coefficients based on the total number of floors enables adaptive adjustment of the damper opening angle based on the total number of floors. This control method can adaptively adjust the fitting formula to accommodate buildings with varying numbers of floors, improving its universality. Exemplarily, the fitting algorithm uses a linear fitting method. The k1 and k2 values obtained by fitting the experimental data using this method are highly accurate. Specifically, linear fitting methods include the least squares method, the least absolute error regression method, and the bridge regression method.

[0178] The above fitting method can be used to obtain a relationship table between the total number of floors and k1 and k2 respectively, so that there is no need to preset the opening angle of the air valve in the controller. It is only necessary to obtain the total number of floors and the number of terminals below the current floor that are in the open state, and then the opening angle of the air valve of the user on the previous floor can be calculated in real time.

[0179] Exemplarily, the relationship table between the total number of floors and k1 and k2 is pre-stored in the air valve adjustment module 5. The relationship table between the total number of floors and k1 and k2 includes: first floor, corresponding k11 and corresponding k21; second floor, corresponding k12 and corresponding k22... Nth floor, corresponding k1N and corresponding k2N. In addition, the air valve adjustment module 5 is also connected to the cloud platform for communication. The relationship table between the total number of floors and k1 and k2 can be adjusted through the cloud platform 200, which can ensure the accuracy of the calculation of the central range hood control method. In addition, the cloud platform 200 can also be connected to the operation terminal for communication. The operator can input the relationship table between the total number of floors and k1 and k2 on the operation terminal. The operation terminal sends the relationship table between the total number of floors and k1 and k2 to the air valve adjustment module 5 to update the relationship table between the total number of floors and k1 and k2 in the air valve adjustment module 5.

[0180] As a preferred solution, when the total number of floors exceeds N, k1 is set to 3-5, and k2 is set to 0.5-0.9. When the total number of floors does not exceed N, k1 is set to 1-3, and k2 is set to 0.1-0.4. N is the fan preset value. The higher the total number of floors, the smaller the damper opening angle on that floor, achieving uniform distribution and adjustment of the public flue flow.

[0181] Exemplarily, a is preferably 90°. When a is 90°, the air valve on the current floor is in a fully open state.

[0182] S120: Send the terminal power-on status to the fan, so that the fan adjusts the frequency of the fan according to the power-on status of the terminals on all floors.

[0183] The damper and fan are connected via wired and / or wireless communication. For example, they support wireless communication (2G / 3G / 4G / 5G, NB-IoT, LoRa, WiFi, BT, ZigBee) and wired communication (CAN, RS485).

[0184] The fan frequency is mainly affected by the power-on status of the terminals on all floors, so in this embodiment, the fan frequency is adjusted according to the power-on status of the terminals on all floors.

[0185] In order to achieve precise adjustment of the fan frequency, the fan frequency is adjusted according to the following formula: f = k3*(x-1)+d;

[0186] Wherein, f is the frequency of the fan, k3 is the increment step, x is the number of terminals on all floors that are in the turned-on state, and d is the starting frequency of the fan.

[0187] The above formula allows for a more accurate fan frequency, further improving the uniform distribution of airflow across all floors of the central range hood system 100. The more terminals on all floors are powered on, the higher the fan frequency and the greater the airflow, achieving uniform distribution and adjustment of the common flue airflow.

[0188] In addition, the k3 and the d are determined by the following steps:

[0189] For the preset total number of floors, multiple sets of corresponding x obtained through experiments 实验 and f 实验 ;

[0190] Based on the fitting algorithm, multiple groups of corresponding x 实验 and f 实验 Performing data fitting to obtain k3 and d corresponding to the preset total number of floors;

[0191] Repeat the above steps for different preset total numbers of floors to obtain k3 and d corresponding to different preset total numbers of floors.

[0192] Automatically adjusting the fitting formula coefficients based on the total number of floors enables adaptive adjustment of the fan frequency. This control method can adaptively adjust the fitting formula to accommodate buildings with varying numbers of floors, improving its universal applicability. For example, the fitting algorithm uses a linear fitting method. The k³ and d values obtained by fitting the experimental data using this method are highly accurate. Specifically, linear fitting methods include the least squares method, the least absolute error regression method, and the bridge regression method.

[0193] The above fitting method can be used to obtain a relationship table between the total number of floors and k3 and d, respectively. This makes it possible to calculate the fan frequency of the user on the previous floor in real time by simply obtaining the total number of floors and the number of terminals in the open state on all floors without having to preset the fan frequency in the controller.

[0194] Exemplarily, a table of relationships between the total number of floors and k3 and d, respectively, is pre-stored in the fan frequency adjustment module 6. The table of relationships between the total number of floors and k3 and d, respectively, includes: first floor, corresponding k31 and corresponding d1; second floor, corresponding k32 and corresponding d2... Nth floor, corresponding k33 and corresponding d3. In addition, the fan frequency adjustment module 6 is also connected to the cloud platform for communication. The table of relationships between the total number of floors and k3 and d, respectively, can be adjusted via the cloud platform 200, thereby ensuring the accuracy of the calculations of the central range hood control method. In addition, the cloud platform 200 can also be connected to the operation terminal for communication. The operator can input the table of relationships between the total number of floors and k3 and d, respectively, on the operation terminal. The operation terminal sends the table of relationships between the total number of floors and k3 and d, respectively, to the fan frequency adjustment module 6, thereby updating the table of relationships between the total number of floors and k3 and d, respectively, within the fan frequency adjustment module 6.

[0195] As an optimal solution, when the total number of floors exceeds N, d is 25 to 30; when the total number of floors does not exceed N, d is 20 to 25; k3 is 1 to 5; N is the fan preset value. The higher the total number of floors, the greater the corresponding fan frequency, thereby achieving the purpose of uniform distribution and adjustment of the public flue flow.

[0196] S130, sending the opening status of the terminal to other floors, so that the air valves of users on other floors adjust the opening angles of the air valves of users on other floors according to the opening status of the terminals below the other floors.

[0197] The air valves are connected to each other via wired and / or wireless communication, for example, supporting wireless communication (2G / 3G / 4G / 5G, NB-IoT, LoRa, WiFi, BT, ZigBee) and wired communication (CAN, RS485).

[0198] Among them, other floors refer to floors other than the current floor. For example, if the terminal on the fifth floor is turned on, then the current floor refers to the fifth floor, and other floors refer to the first floor, second floor, third floor, etc.

[0199] Since the opening status of the terminal on the current floor has changed, it will affect the flow of the air valves of users on other floors. The opening status of the air valves of users on other floors needs to be adjusted according to the opening status of the air valves on the current floor to ensure uniform flow at each location.

[0200] The opening angles of the air valves on other floors that have been opened are adjusted according to the following formula:

[0201] β=a-k1*b-k2*c;

[0202] Among them, a is the maximum angle of the air valve opening; k1 is the start-up coefficient, b is the number of terminals in the open state below the floor where the air valve is opened, k2 is the shutdown coefficient, and c is the number of terminals below the floor where the air valve is opened that are closed continuously starting from the lowest floor.

[0203] The above formula allows for more accurate damper opening angles on other floors, further improving the uniform distribution of flow across all floors of the central range hood system 100. The greater the number of powered-on terminals below other floors, the smaller the damper opening angles below other floors, achieving uniform distribution of flow across the common flue.

[0204] Among them, sending the terminal opening status to other floors includes: making the fan periodically send the opening status of the terminals on all floors to all air valves, and periodically sending the opening status of the terminals on all floors to all air valves, which can avoid the problem of too high frequency of sending the terminal opening status, and can effectively improve the service life of the controller of the central range hood system 100.

[0205] S140, the control method further includes:

[0206] S141: In response to the user on the current floor turning off the terminal, the damper for the user on the current floor is adjusted to close. When the terminal is no longer in use, promptly closing the corresponding damper can prevent smoke backflow and odor in the public flue. The algorithm for determining the damper opening angle in this step is essentially the same as that in step S110 and will not be described in detail here.

[0207] S142: The terminal's shutdown status is transmitted to the fan, causing it to adjust its frequency based on the terminal's power status on all floors. The fan's frequency is also affected by the terminal's shutdown status on the current floor. Adjusting the fan frequency based on the latest terminal's power status on all floors ensures uniform flow across all floors. The fan frequency calculation algorithm in this step is essentially the same as that in step S120 and will not be detailed here.

[0208] S143: The terminal's shutdown status is transmitted to other floors, so that the damper opening angles of the users on these floors are adjusted based on the terminal's opening status below them. Shutting down the terminal on the previous floor will also affect the damper opening angles on other floors. These damper opening angles are adjusted based on the latest terminal opening status on all floors, ensuring uniform airflow across all floors. The algorithm for calculating the damper opening angle in this step is essentially the same as that in step S130 and will not be detailed here.

[0209] This embodiment can adjust the air valve opening angle and the fan frequency according to the opening status of the terminals on different floors. The air valve opening angle adjustment and the fan frequency adjustment work together, and the air valve opening angle adjustments on different floors work together, which can achieve the effect of simple, efficient and reliable uniform distribution of flow on each floor.

[0210] Example 3

[0211] Figure 3 This is a flow chart of a control method provided in the third embodiment of the present invention. This embodiment is applicable to the case of adjusting the flow rate of each layer of the central range hood system. The method can be executed by the fan in the embodiment of the present invention. The fan can be implemented in software and / or hardware. Figure 3 As shown, the method specifically includes the following steps:

[0212] S210: In response to a user on the current floor turning on the terminal, adjusting the frequency of the fan according to the turning-on status of the terminals on all floors.

[0213] The terminals include non-powered terminals and / or powered terminals, and the method has good universal applicability to different types of terminals.

[0214] The terminal and damper are connected to the fan via wired and / or wireless communication, supporting wireless communication (2G / 3G / 4G / 5G, NB-IoT, LoRa, WiFi, BT, ZigBee) and wired communication (CAN, RS485).

[0215] Among them, since the frequency of the fan is greatly affected by the opening status of the terminals on all floors, the frequency of the fan is adjusted according to the opening status of the terminals on each floor, which can achieve precise adjustment of the fan frequency.

[0216] In order to achieve precise adjustment of the fan frequency, the fan frequency is adjusted according to the following formula: f = k3*(x-1)+d;

[0217] Wherein, f is the frequency of the fan, k3 is the increment step, x is the number of terminals in the turned-on state on all floors, and d is the starting frequency of the fan.

[0218] The above formula allows for a more accurate fan frequency, further improving the uniform distribution of airflow across all floors of the central range hood system 100. The more terminals on all floors are powered on, the higher the fan frequency and the greater the airflow, achieving uniform distribution and adjustment of the common flue airflow.

[0219] In addition, the k3 and the d are determined by the following steps:

[0220] For the preset total number of floors, multiple sets of corresponding x obtained through experiments 实验 and f 实验 ;

[0221] Based on the fitting algorithm, multiple groups of corresponding x 实验 and f 实验 Performing data fitting to obtain k3 and d corresponding to the preset total number of floors;

[0222] Repeat the above steps for different preset total numbers of floors to obtain k3 and d corresponding to different preset total numbers of floors.

[0223] Automatically adjusting the fitting formula coefficients based on the total number of floors enables adaptive adjustment of the fan frequency. This control method can adaptively adjust the fitting formula to accommodate buildings with varying numbers of floors, improving its universal applicability. For example, the fitting algorithm uses a linear fitting method. The k³ and d values obtained by fitting the experimental data using this method are highly accurate. Specifically, linear fitting methods include the least squares method, the least absolute error regression method, and the bridge regression method.

[0224] The above fitting method can be used to obtain a relationship table between the total number of floors and k3 and d, respectively. This makes it possible to calculate the fan frequency of the user on the previous floor in real time by simply obtaining the total number of floors and the number of terminals in the open state on all floors without having to preset the fan frequency in the controller.

[0225] Exemplarily, a table of relationships between the total number of floors and k3 and d, respectively, is pre-stored in the fan frequency adjustment module 6. The table of relationships between the total number of floors and k3 and d, respectively, includes: first floor, corresponding k31 and corresponding d1; second floor, corresponding k32 and corresponding d2... Nth floor, corresponding k33 and corresponding d3. In addition, the fan frequency adjustment module 6 is also connected to the cloud platform for communication. The table of relationships between the total number of floors and k3 and d, respectively, can be adjusted via the cloud platform 200, thereby ensuring the accuracy of the calculations of the central range hood control method. In addition, the cloud platform 200 can also be connected to the operation terminal for communication. The operator can input the table of relationships between the total number of floors and k3 and d, respectively, on the operation terminal. The operation terminal sends the table of relationships between the total number of floors and k3 and d, respectively, to the fan frequency adjustment module 6, thereby updating the table of relationships between the total number of floors and k3 and d, respectively, within the fan frequency adjustment module 6.

[0226] As an optimal solution, when the total number of floors exceeds N, d is 25 to 30; when the total number of floors does not exceed N, d is 20 to 25; k3 is 1 to 5; N is the fan preset value. The higher the total number of floors, the greater the corresponding fan frequency, thereby achieving the purpose of uniform distribution and adjustment of the public flue flow.

[0227] S220: In response to the user on the current floor turning off the terminal, the fan frequency is adjusted based on the terminal's power-on status on all floors. Terminal shutdown in the system also affects the fan frequency. Adjusting the fan frequency based on the latest terminal's power-on status on all floors ensures uniform flow across all floors. The algorithm for determining the damper's opening angle in this step is essentially the same as that in step S210 and will not be detailed here.

[0228] S230: In response to the user on the current floor turning on the terminal, the terminal opening status is sent to other floors, so that the air valves of the users on other floors adjust the opening angles of the air valves of the users on other floors according to the opening status of the terminals below the other floors.

[0229] The damper and fan are connected via wired and / or wireless communication. For example, wireless communication (2G / 3G / 4G / 5G, NB-IoT, LoRa, WiFi, BT, ZigBee) and wired communication (CAN, RS485) are supported.

[0230] Among them, other floors refer to floors other than the current floor. For example, if the terminal on the fifth floor is turned on, then the current floor refers to the fifth floor, and other floors refer to the first floor, second floor, third floor, etc.

[0231] Since the opening status of the terminal on the current floor has changed, it will affect the flow of the air valves of users on other floors. The opening status of the air valves of users on other floors needs to be adjusted according to the opening status of the air valves on the current floor to ensure uniform flow at each location.

[0232] The opening angles of the air valves on other floors that have been opened are adjusted according to the following formula:

[0233] β=a-k1*b-k2*c;

[0234] Among them, a is the maximum angle of the air valve opening; k1 is the start-up coefficient, b is the number of terminals in the open state below the floor where the air valve is opened, k2 is the shutdown coefficient, and c is the number of terminals below the floor where the air valve is opened that are closed continuously starting from the lowest floor.

[0235] The above formula allows for more accurate damper opening angles on other floors, further improving the uniform distribution of flow across all floors of the central range hood system 100. The greater the number of powered-on terminals below other floors, the smaller the damper opening angles below other floors, achieving uniform distribution of flow across the common flue.

[0236] The algorithm for calculating the air valve opening angle in this step is basically the same as that in step S130 and will not be described in detail here.

[0237] Among them, sending the terminal opening status to other floors includes: making the fan periodically send the opening status of the terminals on all floors to all air valves. Periodically sending the opening status of the terminals on all floors to all air valves can avoid the problem of too high frequency of sending the terminal opening status, and can effectively improve the service life of the controller of the central range hood system 100.

[0238] S240: In response to the only terminal in the on state being turned off, adjusting the fan to turn off. When all terminals are in the off state, timely stopping of the fan can save energy for the central range hood system and avoid unnecessary energy waste.

[0239] The terminals include non-powered terminals and / or powered terminals, and the method has good universal applicability to different types of terminals.

[0240] Example 4

[0241] Figure 4 This is a flow chart of a control method provided in the fourth embodiment of the present invention. This embodiment is applicable to the case of adjusting the flow rate of each floor of the central range hood system. The method can be executed by the air valves of users on other floors in the embodiment of the present invention. The air valves of users on other floors can be implemented in software and / or hardware. Figure 4 As shown, the method specifically includes the following steps:

[0242] S310: In response to a user on the current floor turning on the terminal, adjusting the opening angles of the air valves of users on other floors according to the opening status of the terminals below other floors.

[0243] The air valves are connected to the terminals and the air valves are connected to each other via wired and / or wireless communication.

[0244] The terminals include non-powered terminals and / or powered terminals.

[0245] S320: In response to the user on the current floor turning off the terminal, adjusting the opening angle of the air valve of the users on other floors according to the opening status of the terminals below other floors.

[0246] In summary, the opening state of the opened air valve is greatly affected by the opening state of the terminal below the floor where the air valve is opened. Therefore, the opened air valve in this embodiment adjusts the opening angle of the opened air valve according to the opening state of the terminal below the floor where the air valve is opened, thereby achieving precise adjustment of the opening state of the opened air valve.

[0247] As a preferred solution, the opening angle is adjusted using the following formula:

[0248] β=a-k1*b-k2*c;

[0249] Among them, a is the maximum opening angle of the air valve, k1 is the start-up coefficient, b is the number of terminals in the open state below the floor where the air valve is opened, k2 is the shutdown coefficient, and c is the number of terminals below the floor where the air valve is opened that are closed continuously starting from the lowest floor.

[0250] The above formula allows for a more accurate calculation of the damper opening angle, further improving the uniform distribution of flow across all floors of the central range hood system 100. The greater the number of terminals below the floor with the damper opening, the smaller the damper opening angle, achieving uniform distribution of flow across the common flue.

[0251] For example, the opened damper is on the 8th floor, with the 1st floor open, the 2nd floor open, the 3rd floor open, the 4th floor closed, the 5th floor closed, the 6th floor open, the 7th floor open, and the 8th floor open. b is 5 and c is 3. The opened damper is on the 8th floor, with the 1st floor closed, the 2nd floor open, the 3rd floor open, the 4th floor closed, the 5th floor closed, the 6th floor open, the 7th floor open, and the 8th floor open. b is 4 and c is 0.

[0252] In addition, k1 and k2 are determined by the following steps:

[0253] For the preset total number of floors, multiple corresponding β groups obtained through experiments 实验 、a 实验 、b 实验 and c 实验 ;

[0254] Based on the fitting algorithm, the β 实验 、a 实验 、b 实验 and c 实验 Perform data fitting to obtain k1 and k2 corresponding to the total number of preset floors;

[0255] For different preset total numbers of floors, the above steps are repeated to obtain k1 and k2 corresponding to different preset total numbers of floors.

[0256] Automatically adjusting the fitting formula coefficients based on the total number of floors enables adaptive adjustment of the damper opening angle based on the total number of floors. This control method can adaptively adjust the fitting formula to accommodate buildings with varying numbers of floors, improving its universality. Exemplarily, the fitting algorithm uses a linear fitting method. The k1 and k2 values obtained by fitting the experimental data using this method are highly accurate. Specifically, linear fitting methods include the least squares method, the least absolute error regression method, and the bridge regression method.

[0257] The above fitting method can be used to obtain a relationship table between the total number of floors and k1 and k2 respectively, so that there is no need to preset the opening angle of the air valve in the controller. It is only necessary to obtain the total number of floors and the number of terminals in the open state below the opened air valve, and then the opening angle of the opened air valve can be calculated in real time.

[0258] Exemplarily, the relationship table between the total number of floors and k1 and k2 is pre-stored in the air valve adjustment module 5. The relationship table between the total number of floors and k1 and k2 includes: first floor, corresponding k11 and corresponding k21; second floor, corresponding k12 and corresponding k22... Nth floor, corresponding k1N and corresponding k2N. In addition, the air valve adjustment module 5 is also connected to the cloud platform for communication. The relationship table between the total number of floors and k1 and k2 can be adjusted through the cloud platform 200, which can ensure the accuracy of the calculation of the central range hood control method. In addition, the cloud platform 200 can also be connected to the operation terminal for communication. The operator can input the relationship table between the total number of floors and k1 and k2 on the operation terminal. The operation terminal sends the relationship table between the total number of floors and k1 and k2 to the air valve adjustment module 5 to update the relationship table between the total number of floors and k1 and k2 in the air valve adjustment module 5.

[0259] As a preferred solution, when the total number of floors exceeds N, k1 is set to 3-5, and k2 is set to 0.5-0.9. When the total number of floors does not exceed N, k1 is set to 1-3, and k2 is set to 0.1-0.4. N is the fan preset value. The higher the total number of floors, the smaller the opening angle of the open damper, achieving the goal of evenly distributing and adjusting the public flue flow.

[0260] Exemplarily, a is preferably 90°. When a is 90°, the opened air valve is in a fully open state.

[0261] For ease of understanding, the control method is now described in conjunction with the angle of the air valve 2 end, the angle of the fan 1 end, and the angle of the air valve end at other floors 301:

[0262] The user on the current floor turns on terminal 3;

[0263] The air valve adjustment module 5 of the current floor 301 receives the signal that the terminal 3 of the current floor is turned on;

[0264] The damper adjustment module 5 on the current floor 301 calculates the opening angle for the current floor based on the stored information about the opening status of the terminals 3 on all floors 301 and the formula β = a - k1 * b - k2 * c. The damper adjustment module 5 controls the damper 4 on the current floor 301 to open at the calculated opening angle and sends the information about the terminal 3 on the current floor being opened to the fan frequency adjustment module 6.

[0265] After receiving the power-on signal of the terminal 3 on the current floor, the fan frequency adjustment module 6 calculates the frequency of the fan 1 according to f=k3*(x-1)+d, and controls the fan 1 to adjust according to the calculated frequency of the fan 1;

[0266] The fan frequency adjustment module 6 periodically transmits the activation status of the terminals 3 on all floors 301 to the damper adjustment modules 5 on all floors 301. The damper adjustment modules 5 on floors other than the current floor 301 recalculate the opening angle β of the corresponding damper 4 based on the updated activation status of the terminals 3 on all floors 301 and the formula β = a-k1*b-k2*c. The dampers 4 on floors other than the current floor 301 are then re-adjusted based on the corresponding recalculated opening angle β.

[0267] The user on the current floor turns off terminal 3;

[0268] The air valve adjustment module 5 of the current floor 301 receives the signal of the terminal 3 being closed on the current floor and controls the air valve 4 of the current floor 301 to be closed, and sends the information of the terminal 3 being closed on the current floor to the fan frequency adjustment module 6;

[0269] After receiving the shutdown signal of the terminal 3 on the current floor, the fan frequency adjustment module 6 calculates the frequency of the fan 1 according to f=k3*(x-1)+d, and controls the fan 1 to adjust according to the calculated frequency of the fan 1;

[0270] The fan frequency adjustment module 6 periodically transmits the activation status of the terminals 3 on all floors 301 to the damper adjustment modules 5 on all floors 301. The damper adjustment modules 5 on floors other than the current floor 301 recalculate the opening angle β of the corresponding damper 4 based on the updated activation status of the terminals 3 on all floors 301 and the formula β = a-k1*b-k2*c. The dampers 4 on floors other than the current floor 301 are then readjusted based on the recalculated opening angle β.

[0271] The user on the current floor turns off terminal 3;

[0272] The air valve adjustment module 5 of the current floor 301 receives the signal that the terminal 3 of the current floor is closed;

[0273] The damper adjustment module 5 on the current floor 301 calculates the closing angle for the current floor based on the stored closing status information for all floors 301 and the formula β = a - k1 * b - k2 * c. The damper adjustment module 5 controls the damper 4 on the current floor 301 to close at the calculated closing angle and sends information indicating that the terminal 3 on the current floor is closed to the fan frequency adjustment module 6.

[0274] After receiving the power-on signal of the terminal 3 on the current floor, the fan frequency adjustment module 6 calculates the frequency of the fan 1 according to f=k3*(x-1)+d, and controls the fan 1 to adjust according to the calculated frequency of the fan 1;

[0275] The fan frequency adjustment module 6 periodically transmits the shutdown status of the terminals 3 on all floors 301 to the damper adjustment modules 5 on all floors 301. The damper adjustment modules 5 on floors other than the current floor 301 recalculate the closing angle β of the corresponding damper 4 based on the updated shutdown status of the terminals 3 on all floors 301 and the formula β = a-k1*b-k2*c. The dampers 4 on floors other than the current floor 301 are then readjusted based on the corresponding recalculated closing angle β.

[0276] Example 5

[0277] Figure 5 This is a structural diagram of a device in Example 5 of the present invention. Figure 5 A block diagram of an exemplary device 12 suitable for use in implementing embodiments of the present invention is shown. Figure 5 The device 12 shown is only an example and should not bring any limitation to the functionality and scope of use of the embodiments of the present invention.

[0278] like Figure 5 As shown, device 12 is implemented as a general-purpose computing device. Components of device 12 may include, but are not limited to, one or more processors or processing units 16, a system memory 28, and a bus 18 that connects various system components (including system memory 28 and processing unit 16).

[0279] Bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus architectures. Examples of these architectures include, but are not limited to, an Industry Standard Architecture (ISA) bus, a Micro Channel Architecture (MAC) bus, an Enhanced ISA bus, a Video Electronics Standards Association (VESA) local bus, and a Peripheral Component Interconnect (PCI) bus.

[0280] Device 12 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by device 12, including volatile and non-volatile media, removable and non-removable media.

[0281] System memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and / or cache memory 32. Device 12 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, storage system 34 may be configured to read and write non-removable, non-volatile magnetic media ( Figure 5 Not shown, often called a "hard drive"). Although Figure 5 Not shown, a magnetic disk drive for reading and writing to a removable non-volatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive for reading and writing to a removable non-volatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 via one or more data media interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of various embodiments of the present invention.

[0282] A program / utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28. Such program modules 42 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may include an implementation of a network environment. Program modules 42 generally perform the functions and / or methodologies of the embodiments described herein.

[0283] Device 12 can also communicate with one or more external devices 14 (e.g., a keyboard, pointing device, display 24, etc.), one or more devices that enable a user to interact with device 12, and / or any device that enables device 12 to communicate with one or more other computing devices (e.g., a network card, a modem, etc.). This communication can occur via input / output (I / O) interface 22. Furthermore, in this embodiment, device 12 and display 24 are not separate entities, but rather are embedded within the mirror. When the display surface of display 24 is not displayed, the display surface of display 24 and the mirror are visually integrated. Furthermore, device 12 can communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) via network adapter 20. As shown, network adapter 20 communicates with other modules of device 12 via bus 18. It should be understood that although not shown in the figures, other hardware and / or software modules may be used in conjunction with device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0284] The processing unit 16 executes various functional applications and data processing by running programs stored in the system memory 28, such as implementing a control method provided by the second, third or fourth embodiment of the present invention.

[0285] Example 6

[0286] Embodiment 6 of the present invention provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, a control method as provided in Embodiment 2, 3 or 4 of the present invention is implemented.

[0287] Any combination of one or more computer-readable media can be used. A computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or component, or any combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, device or device.

[0288] A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries computer-readable program code. Such a propagated data signal may take a variety of forms, including, but not limited to, electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0289] Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0290] Computer program code for performing the operations of the present invention may be written in one or more programming languages, or a combination thereof, including object-oriented programming languages such as Java, Smalltalk, C++, and conventional procedural programming languages such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0291] Note that the basic principles and main features of the present invention and the advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, which are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications are intended to fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A control method for controlling a central range hood system, the central range hood system comprising: A fan, located at the top of the building's public flue, is used to generate suction force; Air dampers are installed in the kitchen flues of users on different floors; Terminal, located in the kitchen; Characterized in that the control method includes: In response to a user on the current floor turning on the terminal, adjusting the opening angle of the air valve of the user on the current floor according to the opening status of the terminals below the current floor; Sending the terminal power-on status to the fan, so that the fan adjusts the frequency of the fan according to the power-on status of the terminals on all floors; The terminal opening status is sent to other floors so that the air valves of users on other floors adjust the opening angles of the air valves of users on other floors according to the opening status of the terminals below the other floors.

2. The control method according to claim 1, characterized in that: The adjusting the opening angle of the air valve of the user on the current floor according to the opening state of the terminal below the current floor includes: The opening angle is adjusted according to the following formula: β=a-k1*b-k2*c; Among them, a is the maximum angle of the air valve opening, k1 is the start-up coefficient, b is the number of the terminals below the current floor that are in the open state, k2 is the shutdown coefficient, and c is the number of the terminals below the current floor that are continuously closed starting from the lowest floor.

3. The control method according to claim 1, characterized in that: The method of adjusting the opening angle of the air valve of the users on the other floors according to the opening state of the terminals below the other floors includes: The opened air valve is adjusted to the opening angle according to the following formula: β=a-k1*b-k2*c; Among them, a is the maximum angle of the air valve opening; k1 is the start-up coefficient, b is the number of the terminals in the open state below the floor where the air valve is opened, k2 is the shutdown coefficient, and c is the number of the terminals below the floor where the air valve is opened that are closed continuously starting from the lowest floor.

4. The control method according to claim 2 or 3, characterized in that: The k1 and k2 are determined by the following steps: For the preset total number of floors, multiple corresponding β groups obtained through experiments 实验 、a 实验 、b 实验 and c 实验 ; Based on the fitting algorithm, the β 实验 、a 实验 、b 实验 and c 实验 Perform data fitting to obtain k1 and k2 corresponding to the total number of preset floors; For different preset total numbers of floors, the above steps are repeated to obtain k1 and k2 corresponding to different preset total numbers of floors.

5. The control method according to claim 4, characterized in that: The fitting algorithm adopts a linear fitting method.

6. The control method according to claim 1, characterized in that: The method of adjusting the frequency of the fan according to the power-on status of the terminals on all floors includes: The frequency of the fan is adjusted according to the following formula: ； Wherein, f is the frequency of the fan, k3 is the increment step, x is the number of terminals on all floors that are in the turned-on state, and d is the starting frequency of the fan.

7. The control method according to claim 6, characterized in that: The k3 and d are determined by the following steps: For the preset total number of floors, multiple sets of corresponding x obtained through experiments 实验 and f 实验 ; Based on the fitting algorithm, multiple groups of corresponding x 实验 and f 实验 Performing data fitting to obtain k3 and d corresponding to the preset total number of floors; Repeat the above steps for different preset total numbers of floors to obtain k3 and d corresponding to different preset total numbers of floors.

8. The control method according to claim 7, characterized in that: The fitting algorithm is a linear fitting method.

9. The control method according to claim 4, characterized in that: When the total number of floors exceeds the value of N, k1 is 3 to 5 and k2 is 0.5 to 0.9; When the total number of floors does not exceed N, k1 is 1 to 3 and k2 is 0.1 to 0.4; N is the fan preset value.

10. The control method according to claim 6, characterized in that: When the total number of floors exceeds N, d is set to 25-30; when the total number of floors does not exceed N, d is set to 20-25; k3 is set to 1-5; N is the fan preset value.

11. The control method according to claim 1, characterized in that: The sending of the terminal power-on status to other floors includes: The fan periodically sends the opening status of the terminals on all floors to all the air valves.

12. The control method according to claim 1, characterized in that: The control method further includes: In response to a user on the current floor turning off the terminal, adjusting the air valve of the user on the current floor to close; Sending the terminal off status to the fan, so that the fan adjusts the frequency of the fan according to the on status of the terminals on all floors; The terminal closing status is sent to other floors so that the air valves of users on other floors adjust the opening angles of the air valves of users on other floors according to the opening status of the terminals below the other floors.

13. The control method according to claim 1, characterized in that: The terminal includes an unpowered terminal and / or a powered terminal.

14. The control method according to claim 1, characterized in that: The terminal is connected to the air valve via wired communication and / or wireless communication; The air valve is connected to the fan via wired communication and / or wireless communication; The air valves are connected to each other via wired communication and / or wireless communication.

15. A control method for controlling a central range hood system, the central range hood system comprising: A fan, located at the top of the building's public flue, is used to generate suction force; Air dampers are installed in the kitchen flues of users on different floors; Terminal, located in the kitchen; Characterized in that the control method includes: In response to a user on the current floor turning on the terminal, adjusting the frequency of the fan according to the turning-on status of the terminals on all floors; In response to the user on the current floor turning on the terminal, the terminal opening status is sent to other floors, so that the air valves of the users on other floors adjust the opening angles of the air valves of the users on other floors according to the opening status of the terminals below the other floors.

16. The control method according to claim 15, characterized in that: The control method further includes: In response to a user on the current floor turning off the terminal, the frequency of the fan is adjusted according to the on-state of the terminals on all floors.

17. The control method according to claim 15 or 16, characterized in that: The adjusting the frequency of the fan according to the opening status of the terminals on all floors includes: The frequency of the fan is adjusted according to the following formula: ； Wherein, f is the frequency of the fan, k3 is the increment step, x is the number of terminals on all floors that are in the turned-on state, and d is the starting frequency of the fan.

18. The control method according to claim 17, characterized in that: The k3 and d are determined by the following steps: For the preset total number of floors, multiple sets of corresponding x obtained through experiments 实验 and f 实验 ; Based on the fitting algorithm, multiple groups of corresponding x 实验 and f 实验 Performing data fitting to obtain k3 and d corresponding to the preset total number of floors; Repeat the above steps for different preset total numbers of floors to obtain k3 and d corresponding to different preset total numbers of floors.

19. The control method according to claim 18, characterized in that: When the total number of floors exceeds N, d is set to 25-30; when the total number of floors does not exceed N, d is set to 20-25; k3 is set to 1-5; N is the fan preset value.

20. The control method according to claim 15, characterized in that: The method of adjusting the opening angle of the air valve of the users on other floors according to the opening state of the terminals below the other floors includes: The opened air valve is adjusted to the opening angle according to the following formula: β=a-k1*b-k2*c; Among them, a is the maximum angle of the air valve opening, k1 is the start-up coefficient, b is the number of the terminals in the open state below the floor where the air valve is opened, k2 is the shutdown coefficient, and c is the number of the terminals below the floor where the air valve is opened that are closed continuously starting from the lowest floor.

21. The control method according to claim 20, characterized in that: The k1 and k2 are determined by the following steps: For the preset total number of floors, multiple corresponding β groups obtained through experiments 实验 、a 实验 、b 实验 and c 实验 ; Based on the fitting algorithm, multiple groups of corresponding β experiments, a 实验 、b 实验 and c 实验 Perform data fitting to obtain k1 and k2 corresponding to the total number of preset floors; For different preset total numbers of floors, the above steps are repeated to obtain k1 and k2 corresponding to different preset total numbers of floors.

22. The control method according to claim 21, characterized in that: The fitting algorithm adopts a linear fitting method.

23. The control method according to claim 21, characterized in that: When the total number of floors exceeds the value of N, k1 is 3 to 5 and k2 is 0.5 to 0.9; When the total number of floors does not exceed N, k1 is 1 to 3 and k2 is 0.1 to 0.4; N is the fan preset value.

24. The control method according to claim 15, characterized in that: In response to the only terminal in the open state being closed, the fan is adjusted to be closed.

25. The control method according to claim 15, characterized in that: The terminal includes an unpowered terminal and / or a powered terminal.

26. The control method according to claim 15, characterized in that: The terminal is connected to the air valve via wired communication and / or wireless communication; The air valve is connected to the fan via wired communication and / or wireless communication; The air valves are connected to each other via wired communication and / or wireless communication.

27. A control method for controlling a central range hood system, the central range hood system comprising: Air dampers are installed in the kitchen flues of users on different floors; Terminal, located in the kitchen; Characterized in that the control method includes: In response to a user on the current floor turning on the terminal, the opening angles of the air valves of users on other floors are adjusted according to the opening status of the terminals on other floors and below.

28. The control method according to claim 27, characterized in that: The control method includes: In response to the user on the current floor turning off the terminal, the opening angle of the air valve of the users on other floors is adjusted according to the opening status of the terminals below other floors.

29. The control method according to claim 27 or 28, characterized in that: The adjusting the opening angle of the air valve of the users on other floors according to the opening status of the terminals below other floors includes: The opening angle of the opened air valve is adjusted according to the following formula: β=a-k1*b-k2*c; Among them, a is the maximum opening angle of the air valve, k1 is the start-up coefficient, b is the number of terminals in the open state below the floor where the air valve is opened, k2 is the shutdown coefficient, and c is the number of terminals below the floor where the air valve is opened that are closed continuously starting from the lowest floor.

30. The control method according to claim 29, characterized in that: The k1 and k2 are determined by the following steps: For the preset total number of floors, multiple corresponding β groups obtained through experiments 实验 、a 实验 、b 实验 and c 实验 ; Based on the fitting algorithm, the β 实验 、a 实验 、b 实验 and c 实验 Perform data fitting to obtain k1 and k2 corresponding to the preset total number of floors; For different preset total numbers of floors, the above steps are repeated to obtain k1 and k2 corresponding to different preset total numbers of floors.

31. The control method according to claim 30, characterized in that: The fitting algorithm is a linear fitting method.

32. The control method according to claim 30, characterized in that: When the total number of floors exceeds the value of N, k1 is 3 to 5 and k2 is 0.5 to 0.9; When the total number of floors does not exceed N, k1 is 1 to 3 and k2 is 0.1 to 0.4; N is the fan preset value.

33. The control method according to claim 27, characterized in that: The terminal includes an unpowered terminal and / or a powered terminal.

34. The control method according to claim 27, characterized in that: The terminal is connected to the air valve via wired communication and / or wireless communication; The air valve is connected to the fan via wired communication and / or wireless communication; The air valves are connected to each other via wired communication and / or wireless communication.

35. A central range hood system comprising: A fan, located at the top of the building's public flue, is used to generate suction force; Air dampers are installed in the kitchen flues of users on different floors; Terminal, located in the kitchen; Characterized in that, the central range hood system further comprises: a damper adjustment module configured to, in response to the terminal on the current floor being in an open state, adjust the opening angle of the damper for the user on the current floor according to the open state of the terminals below the current floor; The fan frequency adjustment module is configured to adjust the frequency of the fan according to the current power-on status of the terminals on all floors.

36. A device, characterized in that The device comprises: one or more processors; a storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the control method according to any one of claims 1 to 34.

37. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the control method according to any one of claims 1 to 34 is implemented.

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