Range hood control method and system with filter screen self-cleaning function

Abstract

The invention relates to the technical field of ventilation equipment, in particular to a range hood control method and system with a filter screen self-cleaning function. According to the scheme, the method comprises the steps that a self-cleaning controller of the range hood is arranged, and the heating duration of secondary self-cleaning and the cooling duration of secondary self-cleaning are calculated; when the range hood is in a power failure state, a power failure self-cleaning mode is started; regular self-cleaning timing is started after each time of self-cleaning, and regular self-cleaning is started regularly; a sensor is arranged on the surface of the filter screen to detect the surface temperature and perform over-temperature protection; and an online control button is arranged on the self-cleaning controller to carry out manual self-cleaning control. According to the scheme, by means of the design that refrigeration and heating are alternately used, the optimal cooling, heating and spraying duration is used for online oil stain cleaning in combination with automatic learning, most of oil stains in the filter screen can be removed, and the filter screen can be cleaned with a smaller amount of water in combination with water flushing.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilation equipment, and more specifically, to a control method and system for a range hood with a filter self-cleaning function. Background Art

[0002] In the field of ventilation equipment, it is of great significance and importance to study the control method of range hoods with self-cleaning filter function. This innovative design can not only effectively improve the working efficiency and service life of the range hood, but also significantly improve the indoor air quality. By integrating advanced sensor technology and intelligent control system, the range hood can monitor the degree of contamination of the filter in real time and automatically start the cleaning program to keep the filter clean and efficient. In addition, the application of this technology reduces the frequency and intensity of manual maintenance, reduces the cost of use, and improves the user experience. Therefore, it is of great significance to develop and apply the control method and system of range hoods with self-cleaning filter function.

[0003] Prior to the present invention, the existing control methods for range hoods with self-cleaning filters mainly adopted timed cleaning or trigger mechanisms based on simple sensor feedback. These methods usually rely on a preset time interval or start the cleaning program when the pressure difference on the filter reaches a certain level. The technical difficulties and key points include: Insufficient accuracy: the timed cleaning cannot be adjusted according to the actual usage, which may lead to excessive or insufficient cleaning; and the trigger mechanism based on pressure difference, although relatively intelligent, may still cause misjudgment or delayed cleaning due to the filter being susceptible to the viscosity of oil smoke. Inefficiency: Traditional methods often require the range hood to be stopped for cleaning, which not only affects the continuous ventilation effect of the kitchen, but also reduces the user experience. High maintenance cost: Frequent manual intervention and component replacement increase maintenance costs and also bring inconvenience to users. Limited degree of intelligence: lack of adaptive adjustment to different cooking modes and oil smoke concentrations, and cannot achieve true intelligent management. Summary of the invention

[0004] In view of the above problems, the present invention proposes a range hood control method and system with a filter self-cleaning function. Through the design of alternating cooling and heating, combined with automatic learning, the optimal cooling, heating and spraying time are used for online oil cleaning. Most of the oil in the filter can be removed, and combined with water flushing, the purpose of cleaning the filter can be achieved with less water.

[0005] According to a first aspect of an embodiment of the present invention, a control method for a range hood with a filter self-cleaning function is provided.

[0006] In one or more embodiments, preferably, the control method of a range hood with a filter self-cleaning function comprises:

[0007] Start the range hood and set the range hood self-cleaning process;

[0008] Setting the self-cleaning controller of the range hood and calculating the heating time of the secondary self-cleaning and the cooling time of the secondary self-cleaning;

[0009] When the range hood is in a power outage state, the power-off self-cleaning mode is activated;

[0010] After each self-cleaning, start the regular self-cleaning timer and start the regular self-cleaning regularly;

[0011] A sensor is set on the filter surface to detect the surface temperature and provide over-temperature protection;

[0012] An online control button is provided on the self-cleaning controller for manual self-cleaning control.

[0013] In one or more embodiments, preferably, the starting of the range hood and setting of the range hood self-cleaning process specifically include:

[0014] During the start-up process of the range hood, the program controls the refrigeration unit, wherein the refrigeration unit is a resistance refrigeration sheet, so that the filter temperature is reduced, and the refrigeration time is issued by the refrigeration controller, wherein the refrigeration time is the controlled cooling time;

[0015] The inhaled oil smoke condenses and freezes the oil in the low-temperature filter, and the oil mist freezes. The refrigeration controller controls the filter temperature to increase, and the condensed oil drops into the oil collection tray. Among them, the heating time is the heat control time;

[0016] The refrigeration controller controls the spraying water to clean the filter surface and rinse the residual oil in the filter. The duration of the spraying water is the spraying time.

[0017] In one or more embodiments, preferably, the self-cleaning controller of the range hood is set, and the heating time of the secondary self-cleaning and the cooling time of the secondary self-cleaning are calculated, specifically including:

[0018] A self-cleaning controller is provided inside the range hood, and the self-cleaning controller starts taking pictures after each self-cleaning is completed and before starting. The camera used for taking pictures takes pure white pictures when it is completely cleaned.

[0019] The area of ​​a pure white region is extracted from the photographed content before the self-cleaning is started, which is the first area;

[0020] The pure white area is extracted from the photographed content after the self-cleaning is completed as the second area;

[0021] After receiving the self-cleaning command each time, short-term self-cleaning is started first. During the short-term self-cleaning, a short-term self-cleaning duration is randomly generated;

[0022] According to the short-time self-cleaning time, the short-time heating time is calculated using a first calculation formula, and the short-time cooling time is calculated using a second calculation formula;

[0023] The third calculation formula is used to calculate the short-time self-cleaning degree;

[0024] Obtain all historical data of short-time self-cleaning degrees, read the short-time heating duration and short-time cooling duration corresponding to the scheme with the smallest short-time self-cleaning degree, and calculate the heating duration and cooling duration of the secondary self-cleaning by using the fourth calculation formula;

[0025] The first calculation formula is:

[0026] JR=0.7×(T-DJ)

[0027] Among them, T is the total test time set in advance, JR is the short-time heating time, and DJ is the short-time self-cleaning time;

[0028] The second calculation formula is:

[0029] LR=0.3×(T-DJ)

[0030] Among them, LR is the short-term cooling time;

[0031] The third calculation formula is:

[0032] Z=M1d÷M2d

[0033] Wherein, Z is the degree of short-time self-cleaning, M1d is the first area generated during short-time self-cleaning, and M2d is the second area generated during short-time self-cleaning;

[0034] The fourth calculation formula is:

[0035] R1=K1×LR

[0036] R2=K2×JR

[0037] Among them, R1 is the cooling time of the secondary self-cleaning, K1 is the preset first coefficient, R2 is the heating time of the secondary self-cleaning, and K2 is the preset second coefficient.

[0038] In one or more embodiments, preferably, when the range hood is in a power-off state, the method of starting the power-off self-cleaning specifically includes:

[0039] When the range hood is in a power outage state, determine whether other forms of self-cleaning have occurred between the last power outage and the present time. If not, calculate the total operating time of the range hood from the last power outage to the present time.

[0040] When the total operating time of the range hood exceeds the preset value, the power off self-cleaning will be started. After the power off self-cleaning is started, the self-cleaning controller will start a short-time self-cleaning, update the heating time of the second self-cleaning and the cooling time of the second self-cleaning, and complete one self-cleaning.

[0041] In one or more embodiments, preferably, starting the periodic self-cleaning timer after each self-cleaning and regularly starting the periodic self-cleaning specifically includes:

[0042] After each self-cleaning, start the regular self-cleaning timer;

[0043] When the periodic self-cleaning timing exceeds the preset timing upper limit, the periodic self-cleaning is started. After the periodic self-cleaning process is started, the self-cleaning controller will start a short-time self-cleaning, update the heating time of the second self-cleaning and the cooling time of the second self-cleaning, and complete a self-cleaning.

[0044] In one or more embodiments, preferably, the step of providing a sensor on the filter surface to detect the surface temperature and perform over-temperature protection specifically includes:

[0045] A sensor is arranged on the filter surface to detect the surface temperature;

[0046] When the surface temperature exceeds 80°C, reduce the heating power;

[0047] When the surface temperature exceeds 100°C, stop heating immediately.

[0048] In one or more embodiments, preferably, an online control button is provided on the self-cleaning controller to perform manual self-cleaning control, specifically including:

[0049] An online control button is provided on the self-cleaning controller, and when the button is pressed, manual self-cleaning will be started;

[0050] After starting manual self-cleaning, the self-cleaning controller will start a short self-cleaning, update the heating time of the second self-cleaning and the cooling time of the second self-cleaning, and complete a self-cleaning.

[0051] According to a second aspect of an embodiment of the present invention, a range hood control system with a filter self-cleaning function is provided.

[0052] In one or more embodiments, preferably, the range hood control system with filter self-cleaning function includes:

[0053] Start the self-cleaning module, which is used to start the range hood and set the range hood self-cleaning process;

[0054] A self-cleaning control analysis module, used to set the self-cleaning controller of the range hood and calculate the heating time of the secondary self-cleaning and the cooling time of the secondary self-cleaning;

[0055] A power-off self-cleaning module is used to start the power-off self-cleaning mode when the range hood is in a power-off state;

[0056] The periodic self-cleaning module is used to start the periodic self-cleaning timer after each self-cleaning and regularly start the periodic self-cleaning;

[0057] Over-temperature protection module, used to set a sensor on the filter surface to detect the surface temperature and perform over-temperature protection;

[0058] The manual working module is used to set an online control button on the self-cleaning controller to perform manual self-cleaning control.

[0059] According to a third aspect of an embodiment of the present invention, there is provided a computer-readable storage medium on which computer program instructions are stored. When the computer program instructions are executed by a processor, the method as described in any one of the first aspect of the embodiment of the present invention is implemented.

[0060] According to a fourth aspect of an embodiment of the present invention, there is provided an electronic device, comprising a memory and a processor, wherein the memory is used to store one or more computer program instructions, wherein the one or more computer program instructions are executed by the processor to implement any one of the methods described in the first aspect of the embodiment of the present invention.

[0061] The technical solution provided by the embodiments of the present invention may have the following beneficial effects:

[0062] In the technical solution of the present invention, the self-cleaning time is dynamically adjusted based on the comparison and calculation of photos, which is specifically reflected in the self-cleaning control analysis link. By taking photos with a camera after the range hood completes self-cleaning and before starting, the area of ​​the pure white area is extracted to calculate the short-term self-cleaning degree, and then combined with the corresponding calculation formula, the duration corresponding to the scheme with the smallest short-term self-cleaning degree in historical data is referred to, and the heating time and cooling time of the secondary self-cleaning are further calculated. And in different self-cleaning scenarios (such as power outage self-cleaning, regular self-cleaning), the secondary self-cleaning time calculated in this way is used to perform specific self-cleaning operations. This method can dynamically adjust the self-cleaning time according to the actual cleanliness level of the filter, avoiding insufficient cleaning (too short a time) or energy waste (too long a time) that may occur in fixed-time self-cleaning, so that the self-cleaning process is more in line with the current oil pollution condition of the filter and ensures the cleaning effect. In addition, the setting of the self-cleaning time is continuously optimized based on past data, and the time required for heating, cooling and other links is reasonably allocated, which helps to improve energy utilization efficiency, reduce unnecessary energy consumption, and extend the service life of equipment-related components (such as refrigeration units, heating units, etc.).

[0063] In the scheme of the present invention, a self-cleaning trigger and control mechanism is designed for multiple scenarios, and a variety of different self-cleaning trigger scenarios are set, including power outage self-cleaning (in the power outage state, the total operating time of the range hood from the last power outage self-cleaning to the current time is judged, and it is started if it exceeds the preset value, and the secondary self-cleaning time is used), periodic self-cleaning (the timing is started after each self-cleaning, and it is started if it exceeds the preset timing upper limit, and the secondary self-cleaning time is also used), and manual self-cleaning (manually started through the online control button on the self-cleaning controller, the secondary self-cleaning time is updated and the self-cleaning is completed), which fully covers the self-cleaning needs of the range hood under different usage conditions. Therefore, whether it is during normal use, the time requirement for regular cleaning is met, or when a sudden power outage occurs, or when the user actively wants to clean, the corresponding self-cleaning process can be triggered, meeting the diverse needs of actual usage scenarios, improving user experience, and ensuring that the range hood can always maintain a good clean state. In addition, starting self-cleaning in time in different scenarios can effectively prevent the long-term accumulation of oil and dirt and cause damage to the range hood filter and other components, maintain the good working performance of the range hood, reduce problems such as decreased suction and odor caused by oil and dirt accumulation, and extend the overall service life of the equipment.

[0064] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings.

[0065] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0067] Figure 1 The present invention is a flowchart of a control method for a range hood with a filter self-cleaning function according to an embodiment of the present invention.

[0068] Figure 2 The present invention is a flow chart of starting a range hood and setting a self-cleaning process of the range hood in a control method of a range hood with a filter self-cleaning function according to an embodiment of the present invention.

[0069] Figure 3The present invention is a flow chart of setting a self-cleaning controller of a range hood in a control method of a range hood with a filter self-cleaning function according to an embodiment of the present invention, and calculating a heating time of a secondary self-cleaning and a cooling time of a secondary self-cleaning.

[0070] Figure 4 The present invention is a flow chart of a control method for a range hood with a filter self-cleaning function according to an embodiment of the present invention, in which the range hood is in a power-off state and the power-off self-cleaning mode is started.

[0071] Figure 5 The present invention is a flow chart of a range hood control method with a filter self-cleaning function, in which a periodic self-cleaning timer is started after each self-cleaning, and periodic self-cleaning is started regularly.

[0072] Figure 6 The present invention is a flow chart of a range hood control method with a filter self-cleaning function, in which a sensor is arranged on the filter surface, the surface temperature is detected, and over-temperature protection is performed.

[0073] Figure 7 The present invention is a flow chart of a control method for a range hood with a filter self-cleaning function in which an online control button is provided on a self-cleaning controller for manual self-cleaning control.

[0074] Figure 8 It is a structural diagram of a range hood control system with a filter self-cleaning function according to an embodiment of the present invention.

[0075] Fig. 9 It is a structural diagram of an electronic device in one embodiment of the present invention. DETAILED DESCRIPTION

[0076] In some of the processes described in the specification and claims of the present invention and the above-mentioned figures, multiple operations that appear in a specific order are included, but it should be clearly understood that these operations may not be executed in the order in which they appear in this article or executed in parallel. The serial numbers of the operations, such as 101, 102, etc., are only used to distinguish different operations, and the serial numbers themselves do not represent any execution order. In addition, these processes may include more or fewer operations, and these operations may be executed in sequence or in parallel. It should be noted that the descriptions of "first", "second", etc. in this article are used to distinguish different messages, devices, modules, etc., do not represent the order of precedence, and do not limit the "first" and "second" to be different types.

[0077] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0078] In the field of ventilation equipment, it is of great significance and importance to study the control method of range hoods with self-cleaning filter function. This innovative design can not only effectively improve the working efficiency and service life of the range hood, but also significantly improve the indoor air quality. By integrating advanced sensor technology and intelligent control system, the range hood can monitor the degree of contamination of the filter in real time and automatically start the cleaning program to keep the filter clean and efficient. In addition, the application of this technology reduces the frequency and intensity of manual maintenance, reduces the cost of use, and improves the user experience. Therefore, it is of great significance to develop and apply the control method and system of range hoods with self-cleaning filter function.

[0079] Prior to the present invention, the existing control methods for range hoods with self-cleaning filters mainly adopted timed cleaning or trigger mechanisms based on simple sensor feedback. These methods usually rely on a preset time interval or start the cleaning program when the pressure difference on the filter reaches a certain level. The technical difficulties and key points include: Insufficient accuracy: the timed cleaning cannot be adjusted according to the actual usage, which may lead to excessive or insufficient cleaning; and the trigger mechanism based on pressure difference, although relatively intelligent, may still cause misjudgment or delayed cleaning due to the filter being susceptible to the viscosity of oil smoke. Inefficiency: Traditional methods often require the range hood to be stopped for cleaning, which not only affects the continuous ventilation effect of the kitchen, but also reduces the user experience. High maintenance cost: Frequent manual intervention and component replacement increase maintenance costs and also bring inconvenience to users. Limited degree of intelligence: lack of adaptive adjustment to different cooking modes and oil smoke concentrations, and cannot achieve true intelligent management.

[0080] In the embodiment of the present invention, a range hood control method and system with a filter self-cleaning function are provided. The solution uses a design of alternating cooling and heating, combined with automatic learning to make the optimal cooling, heating and spraying time for online oil cleaning, so that most of the oil in the filter can be removed, and combined with water flushing, the purpose of cleaning the filter can be achieved with less water.

[0081] According to a first aspect of an embodiment of the present invention, a control method for a range hood with a filter self-cleaning function is provided.

[0082] Figure 1 The present invention is a flowchart of a control method for a range hood with a filter self-cleaning function according to an embodiment of the present invention.

[0083] In one or more embodiments, preferably, the control method of a range hood with a filter self-cleaning function comprises:

[0084] S101, start the range hood and set the range hood self-cleaning process;

[0085] S102, setting a self-cleaning controller of the range hood, and calculating a heating time of a secondary self-cleaning and a cooling time of a secondary self-cleaning;

[0086] S103, when the range hood is in a power-off state, starting a power-off self-cleaning mode;

[0087] S104, starting the regular self-cleaning timer after each self-cleaning, and regularly starting the regular self-cleaning;

[0088] S105, setting a sensor on the filter surface to detect the surface temperature and perform over-temperature protection;

[0089] S106. An online control button is provided on the self-cleaning controller for manual self-cleaning control.

[0090] In an embodiment of the present invention, efficient self-cleaning control of the range hood in different usage scenarios is achieved by dynamically adjusting the self-cleaning time. Specifically, when the range hood is started, the system will set a self-cleaning process, including cooling, heating, and spraying steps to clean the filter. At the same time, the self-cleaning controller will analyze the cleanliness of the filter based on the image taken by the camera, and use a series of calculation formulas to dynamically adjust the heating and cooling time of the secondary self-cleaning to ensure the cleaning effect while improving energy efficiency. In addition, the solution also takes into account a variety of scenarios such as power outage self-cleaning, regular self-cleaning, and manual work, fully covering the self-cleaning needs under different usage conditions, effectively preventing the accumulation of oil stains from damaging the equipment, and extending the service life of the range hood.

[0091] Figure 2 The present invention is a flow chart of starting a range hood and setting a self-cleaning process of the range hood in a control method of a range hood with a filter self-cleaning function according to an embodiment of the present invention.

[0092] like Figure 2 As shown, in one or more embodiments, preferably, the starting of the range hood and setting of the range hood self-cleaning process specifically include:

[0093] S201, the process of starting the range hood, the program controls the refrigeration unit, wherein the refrigeration unit is a resistance refrigeration plate, so that the filter temperature is reduced, and the refrigeration time is issued by the refrigeration controller, wherein the refrigeration time is the controlled cooling time;

[0094] S202, the oil smoke sucked in condenses and freezes the oil in the low-temperature filter, the oil mist freezes, the refrigeration controller controls the filter temperature to increase, and the condensed oil drops into the oil collecting pan, wherein the heating time is the heating control time;

[0095] S203, the refrigeration controller controls the spraying water to clean the filter surface, and rinses away the residual oil in the filter. The duration of the spraying water is the spraying duration.

[0096] In an embodiment of the present invention, the implementation method of the range hood self-cleaning process is as follows: when the range hood is started, the range hood is immediately set to enter the self-cleaning process. During the start-up process of the range hood, the refrigeration unit is controlled by the program, and the refrigeration unit here uses a resistance refrigeration plate (the resistance refrigeration plate is a component that uses the Joule heat effect generated by the current passing through the resistor to realize the refrigeration function. Its working principle is that when the current passes through the resistor, the resistor will absorb electrical energy and convert it into heat energy. Through the special heat dissipation design and structure, it can achieve the refrigeration effect on the surrounding objects). The program sends instructions through the refrigeration controller to control the resistance refrigeration plate to work, so that the filter temperature is reduced. The duration of this refrigeration process is the cooling control time. For example, the cooling control time is set to 5 minutes. After the filter temperature is reduced, the oil smoke sucked in will be condensed and frozen in the low-temperature filter, and the oil mist will also freeze. Subsequently, the refrigeration controller controls the filter temperature to increase. At this time, the condensed oil droplets will drip into the oil collection tray due to the increase in temperature. The duration of this heating process is the heating control time. Assume that the heating control time is 3 minutes. Finally, the refrigeration controller controls the spraying water to clean the filter surface and rinse the residual oil in the filter. The duration of the spraying water is the spraying time. For example, the spraying time is set to 4 minutes. By controlling the cooling time, heat control time and spraying time, the self-cleaning process of the range hood is completed.

[0097] Figure 3 The present invention is a flow chart of setting a self-cleaning controller of a range hood in a control method of a range hood with a filter self-cleaning function according to an embodiment of the present invention, and calculating a heating time of a secondary self-cleaning and a cooling time of a secondary self-cleaning.

[0098] like Figure 3 As shown, in one or more embodiments, preferably, the self-cleaning controller of the range hood is set, and the heating time of the secondary self-cleaning and the cooling time of the secondary self-cleaning are calculated, specifically including:

[0099] S301, a self-cleaning controller is provided inside the range hood, and the self-cleaning controller starts taking pictures after each self-cleaning is completed and before starting, wherein the camera used for taking pictures takes pure white pictures when it is in a completely clean state;

[0100] S302, extracting a pure white area from the photographed content before the self-cleaning is started as a first area;

[0101] S303, extracting the pure white area from the photographed content after self-cleaning is completed as the second area;

[0102] S304, after each self-cleaning command is obtained, first start short-time self-cleaning, and during the short-time self-cleaning, randomly generate a short-time self-cleaning duration;

[0103] S305, according to the short-time self-cleaning time, using a first calculation formula to calculate the short-time heating time, and using a second calculation formula to calculate the short-time cooling time;

[0104] S306, calculating the short-time self-cleaning degree using the third calculation formula;

[0105] S307, obtaining all historical data of short-time self-cleaning degrees, reading the short-time heating duration and short-time cooling duration corresponding to the scheme with the smallest short-time self-cleaning degree, and calculating the heating duration and cooling duration of the secondary self-cleaning by using the fourth calculation formula;

[0106] The first calculation formula is:

[0107] JR=0.7×(T-DJ)

[0108] Among them, T is the total test time set in advance, JR is the short-time heating time, and DJ is the short-time self-cleaning time;

[0109] The second calculation formula is:

[0110] LR=0.3×(T-DJ)

[0111] Among them, LR is the short-term cooling time;

[0112] The third calculation formula is:

[0113] Z=M1d÷M2d

[0114] Wherein, Z is the degree of short-time self-cleaning, M1d is the first area generated during short-time self-cleaning, and M2d is the second area generated during short-time self-cleaning;

[0115] The fourth calculation formula is:

[0116] R1=K1×LR

[0117] R2=K2×JR

[0118] Among them, R1 is the cooling time of the secondary self-cleaning, K1 is the preset first coefficient, R2 is the heating time of the secondary self-cleaning, and K2 is the preset second coefficient.

[0119] In an embodiment of the present invention, a self-cleaning controller is provided inside the range hood, and the controller has a specific self-cleaning control function. After each self-cleaning is completed and before starting, the self-cleaning controller will start the camera to take pictures. Here, when the range hood is in a completely clean state, the camera used for taking pictures presents pure white content. Before the self-cleaning is started, the self-cleaning controller will extract the pure white area from the picture content at this time, and define it as the first area; after the self-cleaning is completed, the pure white area is also extracted from the picture content, and recorded as the second area. When the self-cleaning command is obtained each time, the range hood will first start a short-time self-cleaning. In this process, the system will randomly generate a set of short-time self-cleaning durations. Then, the short-time heating duration is calculated according to the first calculation formula JR=0.7×(T-DJ), where T is the total test duration set in advance, JR is the short-time heating duration, and DJ is the short-time self-cleaning duration; and then the short-time cooling duration is calculated using the second calculation formula LR=0.3×(T-DJ), where LR is the short-time cooling duration. Then, the short-time self-cleaning degree is calculated by the third calculation formula Z=M1d÷M2d, where Z represents the short-time self-cleaning degree, M1d is the first area generated during the short-time self-cleaning, and M2d is the second area generated during the short-time self-cleaning. The self-cleaning controller will obtain all the historical data of the short-time self-cleaning degree, read the short-time heating duration and short-time cooling duration corresponding to the scheme with the minimum short-time self-cleaning degree, and finally use the fourth calculation formula R1=K1×LR, R2=K2×JR to calculate the heating duration of the secondary self-cleaning and the cooling duration of the secondary self-cleaning, where R1 is the cooling duration of the secondary self-cleaning, K1 is the preset first coefficient, R2 is the heating duration of the secondary self-cleaning, and K2 is the preset second coefficient. In this way, the heating duration and cooling duration of the secondary self-cleaning of the range hood can be accurately set to achieve efficient self-cleaning control.

[0120] Figure 4 The present invention is a flow chart of a control method for a range hood with a filter self-cleaning function according to an embodiment of the present invention, in which the range hood is in a power-off state and the power-off self-cleaning mode is started.

[0121] like Figure 4 As shown, in one or more embodiments, preferably, when the range hood is in a power-off state, the method of starting the power-off self-cleaning specifically includes:

[0122] S401, when the range hood is in a power-off state, determining whether other forms of self-cleaning have occurred between the last power-off self-cleaning and the present time, and if not, calculating the total operating time of the range hood from the last power-off self-cleaning to the present time;

[0123] S402. When the total operation time of the range hood exceeds a preset value, the power-off self-cleaning is started. After the power-off self-cleaning is started, the self-cleaning controller will start a short-time self-cleaning, update the heating time of the secondary self-cleaning and the cooling time of the secondary self-cleaning, and complete a self-cleaning.

[0124] In an embodiment of the present invention, when the range hood is in a power-off state, a corresponding power-off self-cleaning operation will be performed. First, the control system inside the range hood will determine whether other forms of self-cleaning have occurred between the last power-off self-cleaning and the current moment. For example, if the range hood has not performed other self-cleaning operations such as conventional self-cleaning in the power-on state after the last power-off self-cleaning, then the system will calculate the total running time of the range hood from the last power-off self-cleaning to the current moment. Assuming that the preset value is 50 hours, when the total running time of the range hood exceeds the preset value of 50 hours, the power-off self-cleaning will be started. After the power-off self-cleaning is started, the self-cleaning controller will start a short-time self-cleaning, and update the heating time of the secondary self-cleaning and the cooling time of the secondary self-cleaning, and finally complete one self-cleaning, thereby ensuring that in the power-off state, if the range hood running time reaches a certain extent, it can also perform self-cleaning and maintain a good working state.

[0125] Figure 5 The present invention is a flow chart of a range hood control method with a filter self-cleaning function, in which a periodic self-cleaning timer is started after each self-cleaning, and periodic self-cleaning is started regularly.

[0126] like Figure 5 As shown, in one or more embodiments, preferably, starting the periodic self-cleaning timer after each self-cleaning and regularly starting the periodic self-cleaning specifically includes:

[0127] S501, after each self-cleaning, start the regular self-cleaning timer;

[0128] S502. When the periodic self-cleaning timing exceeds the preset timing upper limit, the periodic self-cleaning is started. After the periodic self-cleaning process is started, the self-cleaning controller will start a short-time self-cleaning, update the heating time of the second self-cleaning and the cooling time of the second self-cleaning, and complete one self-cleaning.

[0129] In an embodiment of the present invention, after the range hood completes self-cleaning each time, the periodic self-cleaning timing function will be started. For example, when the range hood completes a deep self-cleaning, the periodic self-cleaning timing will start working. When the periodic self-cleaning timing exceeds the preset timing upper limit, the periodic self-cleaning will be started. Assuming that the preset timing upper limit is 7 days, when the timing starts from the last self-cleaning completion and reaches the time point of 7 days, the periodic self-cleaning process is started. During the periodic self-cleaning process, the self-cleaning controller will start a short-term self-cleaning, and at the same time update the heating time of the secondary self-cleaning and the cooling time of the secondary self-cleaning, and then complete a self-cleaning, thereby ensuring that the range hood can perform self-cleaning according to a certain time period and maintain its cleaning performance.

[0130] Figure 6 The present invention is a flow chart of a range hood control method with a filter self-cleaning function, in which a sensor is arranged on the filter surface, the surface temperature is detected, and over-temperature protection is performed.

[0131] like Figure 6 As shown, in one or more embodiments, preferably, a sensor is provided on the filter surface to detect the surface temperature and perform over-temperature protection, which specifically includes:

[0132] S601, setting a sensor on the filter surface to detect the surface temperature;

[0133] S602, when the surface temperature exceeds 80°C, reduce the heating power;

[0134] S603. When the surface temperature exceeds 100°C, stop heating immediately.

[0135] In an embodiment of the present invention, a sensor is provided on the filter surface of the range hood, and the function of the sensor is to detect the temperature of the filter surface in real time. When the sensor detects that the surface temperature of the filter exceeds 80°C, the heating device of the range hood will reduce the heating power. For example, if the original heating power is 1000 watts, it will be reduced to 800 watts when the temperature exceeds 80°C. When the sensor detects that the surface temperature of the filter exceeds 100°C, the heating device will stop heating immediately. In this way, it can effectively prevent the filter and other parts of the range hood from being damaged due to excessive temperature, play the role of over-temperature protection, and extend the service life of the range hood.

[0136] Figure 7 The present invention is a flow chart of a control method for a range hood with a filter self-cleaning function in which an online control button is provided on a self-cleaning controller for manual self-cleaning control.

[0137] like Figure 7 As shown, in one or more embodiments, preferably, an online control button is provided on the self-cleaning controller to perform manual self-cleaning control, specifically including:

[0138] S701, an online control button is provided on the self-cleaning controller, and when the button is pressed, manual self-cleaning is started;

[0139] S702, after starting manual self-cleaning, the self-cleaning controller will start short-time self-cleaning, update the heating time of the second self-cleaning and the cooling time of the second self-cleaning, and complete one self-cleaning.

[0140] In an embodiment of the present invention, an online control button is provided on the self-cleaning controller of the range hood. When the user presses this online control button, the manual self-cleaning function will be activated. After the manual self-cleaning is activated, the self-cleaning controller will activate a short-time self-cleaning, and at the same time, the self-cleaning controller will update the heating time of the secondary self-cleaning and the cooling time of the secondary self-cleaning, and finally complete one self-cleaning. For example, if the user finds that the range hood is dirty during daily use, the user can press this online control button at any time to let the range hood perform manual self-cleaning, thereby meeting the user's need to flexibly control the self-cleaning of the range hood.

[0141] According to a second aspect of an embodiment of the present invention, a range hood control system with a filter self-cleaning function is provided.

[0142] Figure 8 It is a structural diagram of a range hood control system with a filter self-cleaning function according to an embodiment of the present invention.

[0143] In one or more embodiments, preferably, the range hood control system with filter self-cleaning function includes:

[0144] The self-cleaning module 801 is started to start the range hood and set the self-cleaning process of the range hood;

[0145] The self-cleaning control analysis module 802 is used to set the self-cleaning controller of the range hood and calculate the heating time of the secondary self-cleaning and the cooling time of the secondary self-cleaning;

[0146] The power-off self-cleaning module 803 is used to start the power-off self-cleaning mode when the range hood is in a power-off state;

[0147] The periodic self-cleaning module 804 is used to start the periodic self-cleaning timer after each self-cleaning and regularly start the periodic self-cleaning;

[0148] The over-temperature protection module 805 is used to set a sensor on the filter surface to detect the surface temperature and perform over-temperature protection;

[0149] The manual working module 806 is used to set an online control button on the self-cleaning controller to perform manual self-cleaning control.

[0150] In the embodiment of the present invention, a system suitable for different structures is realized through a series of modular designs. The system can achieve closed-loop, reliable and efficient execution through collection, analysis and control.

[0151] According to a third aspect of an embodiment of the present invention, there is provided a computer-readable storage medium on which computer program instructions are stored. When the computer program instructions are executed by a processor, the method as described in any one of the first aspect of the embodiment of the present invention is implemented.

[0152] According to a fourth aspect of an embodiment of the present invention, an electronic device is provided. Fig. 9 It is a structural diagram of an electronic device in one embodiment of the present invention. Fig. 9 The electronic device shown is a universal range hood control device with a filter self-cleaning function. The electronic device can be a smart phone, a tablet computer, or other devices. As shown, the electronic device 900 includes a processor 901 and a memory 902. The processor 901 is electrically connected to the memory 902. The processor 901 is the control center of the terminal 900, which uses various interfaces and lines to connect various parts of the entire terminal, and executes various functions of the terminal and processes data by running or calling computer programs stored in the memory 902, and calling data stored in the memory 902, thereby monitoring the terminal as a whole.

[0153] In this embodiment, the processor 901 in the electronic device 900 will load the instructions corresponding to the processes of one or more computer programs into the memory 902 according to the following steps, and the processor 901 will run the computer program stored in the memory 902 to realize various functions: start the range hood and set the self-cleaning process of the range hood; set the self-cleaning controller of the range hood and calculate the heating time of the secondary self-cleaning and the cooling time of the secondary self-cleaning; when the range hood is in a power-off state, start the power-off self-cleaning mode; start the periodic self-cleaning timer after each self-cleaning, and start the periodic self-cleaning regularly; set a sensor on the surface of the filter to detect the surface temperature and perform over-temperature protection; and set an online control button on the self-cleaning controller for manual self-cleaning control.

[0154] The memory 902 may be used to store computer programs and data. The computer programs stored in the memory 902 include instructions that can be executed in the processor. The computer programs may constitute various functional modules. The processor 901 executes various functional applications and data processing by calling the computer programs stored in the memory 902.

[0155] The technical solution provided by the embodiments of the present invention may have the following beneficial effects:

[0156] In the technical solution of the present invention, the self-cleaning time is dynamically adjusted based on the comparison and calculation of photos, which is specifically reflected in the self-cleaning control analysis link. By taking photos with a camera after the range hood completes self-cleaning and before starting, the area of ​​the pure white area is extracted to calculate the short-term self-cleaning degree, and then combined with the corresponding calculation formula, the duration corresponding to the scheme with the smallest short-term self-cleaning degree in historical data is referred to, and the heating time and cooling time of the secondary self-cleaning are further calculated. And in different self-cleaning scenarios (such as power outage self-cleaning, regular self-cleaning), the secondary self-cleaning time calculated in this way is used to perform specific self-cleaning operations. This method can dynamically adjust the self-cleaning time according to the actual cleanliness level of the filter, avoiding insufficient cleaning (too short a time) or energy waste (too long a time) that may occur in fixed-time self-cleaning, so that the self-cleaning process is more in line with the current oil pollution condition of the filter and ensures the cleaning effect. In addition, the setting of the self-cleaning time is continuously optimized based on past data, and the time required for heating, cooling and other links is reasonably allocated, which helps to improve energy utilization efficiency, reduce unnecessary energy consumption, and extend the service life of equipment-related components (such as refrigeration units, heating units, etc.).

[0157] In the scheme of the present invention, a self-cleaning trigger and control mechanism is designed for multiple scenarios, and a variety of different self-cleaning trigger scenarios are set, including power outage self-cleaning (in the power outage state, the total operating time of the range hood from the last power outage self-cleaning to the current time is judged, and it is started if it exceeds the preset value, and the secondary self-cleaning time is used), periodic self-cleaning (the timing is started after each self-cleaning, and it is started if it exceeds the preset timing upper limit, and the secondary self-cleaning time is also used), and manual self-cleaning (manually started through the online control button on the self-cleaning controller, the secondary self-cleaning time is updated and the self-cleaning is completed), which fully covers the self-cleaning needs of the range hood under different usage conditions. Therefore, whether it is during normal use, the time requirement for regular cleaning is met, or when a sudden power outage occurs, or when the user actively wants to clean, the corresponding self-cleaning process can be triggered, meeting the diverse needs of actual usage scenarios, improving user experience, and ensuring that the range hood can always maintain a good clean state. In addition, starting self-cleaning in time in different scenarios can effectively prevent the long-term accumulation of oil and dirt and cause damage to the range hood filter and other components, maintain the good working performance of the range hood, reduce problems such as decreased suction and odor caused by oil and dirt accumulation, and extend the overall service life of the equipment.

[0158] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) containing computer-usable program code.

[0159] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0160] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0161] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0162] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A control method for a range hood with a filter self-cleaning function, characterized in that: The method includes: Start the range hood and set the range hood self-cleaning process; Setting the self-cleaning controller of the range hood and calculating the heating time of the secondary self-cleaning and the cooling time of the secondary self-cleaning; When the range hood is in a power outage state, the power-off self-cleaning mode is activated; After each self-cleaning, start the regular self-cleaning timer and start the regular self-cleaning regularly; A sensor is set on the filter surface to detect the surface temperature and provide over-temperature protection; An online control button is provided on the self-cleaning controller for manual self-cleaning control.

2. A control method for a range hood with a filter self-cleaning function as claimed in claim 1, characterized in that: The starting of the range hood and setting of the range hood self-cleaning process specifically include: During the start-up process of the range hood, the program controls the refrigeration unit, wherein the refrigeration unit is a resistance refrigeration sheet, so that the filter temperature is reduced, and the refrigeration time is issued by the refrigeration controller, wherein the refrigeration time is the controlled cooling time; The inhaled oil smoke condenses and freezes the oil in the low-temperature filter, and the oil mist freezes. The refrigeration controller controls the filter temperature to increase, and the condensed oil drops into the oil collection tray. Among them, the heating time is the heat control time; The refrigeration controller controls the spraying water to clean the filter surface and rinse the residual oil in the filter. The duration of the spraying water is the spraying time.

3. A control method for a range hood with a filter self-cleaning function as claimed in claim 1, characterized in that: The self-cleaning controller of the range hood is set, and the heating time of the secondary self-cleaning and the cooling time of the secondary self-cleaning are calculated, specifically including: A self-cleaning controller is provided inside the range hood, and the self-cleaning controller starts taking pictures after each self-cleaning is completed and before starting. The camera used for taking pictures takes pure white pictures when it is completely cleaned. The area of ​​a pure white region is extracted from the photographed content before the self-cleaning is started, which is the first area; The pure white area is extracted from the photographed content after the self-cleaning is completed as the second area; After receiving the self-cleaning command each time, short-term self-cleaning is started first. During the short-term self-cleaning, a short-term self-cleaning duration is randomly generated; According to the short-time self-cleaning time, the short-time heating time is calculated using a first calculation formula, and the short-time cooling time is calculated using a second calculation formula; The third calculation formula is used to calculate the short-time self-cleaning degree; Obtain all historical data of short-time self-cleaning degrees, read the short-time heating duration and short-time cooling duration corresponding to the scheme with the smallest short-time self-cleaning degree, and calculate the heating duration and cooling duration of the secondary self-cleaning by using the fourth calculation formula; The first calculation formula is: JR=0.7×(T-DJ) Among them, T is the total test time set in advance, JR is the short-time heating time, and DJ is the short-time self-cleaning time; The second calculation formula is: LR=0.3×(T-DJ) Among them, LR is the short-term cooling time; The third calculation formula is: Z=M1d÷M2d Wherein, Z is the degree of short-time self-cleaning, M1d is the first area generated during short-time self-cleaning, and M2d is the second area generated during short-time self-cleaning; The fourth calculation formula is: R1=K1×LR R2=K2×JR Among them, R1 is the cooling time of the secondary self-cleaning, K1 is the preset first coefficient, R2 is the heating time of the secondary self-cleaning, and K2 is the preset second coefficient.

4. A control method for a range hood with a filter self-cleaning function as claimed in claim 1, characterized in that: When the range hood is in a power-off state, the method of starting the power-off self-cleaning specifically includes: When the range hood is in a power outage state, determine whether other forms of self-cleaning have occurred between the last power outage and the present time. If not, calculate the total operating time of the range hood from the last power outage to the present time. When the total operating time of the range hood exceeds the preset value, the power off self-cleaning will be started. After the power off self-cleaning is started, the self-cleaning controller will start a short-time self-cleaning, update the heating time of the second self-cleaning and the cooling time of the second self-cleaning, and complete one self-cleaning.

5. A control method for a range hood with a filter self-cleaning function as claimed in claim 1, characterized in that: The periodic self-cleaning timing is started after each self-cleaning, and the periodic self-cleaning is started regularly, specifically including: After each self-cleaning, start the regular self-cleaning timer; When the periodic self-cleaning timing exceeds the preset timing upper limit, the periodic self-cleaning is started. After the periodic self-cleaning process is started, the self-cleaning controller will start a short-time self-cleaning, update the heating time of the second self-cleaning and the cooling time of the second self-cleaning, and complete a self-cleaning.

6. A control method for a range hood with a filter self-cleaning function as claimed in claim 1, characterized in that: The sensor is arranged on the filter surface to detect the surface temperature and perform over-temperature protection, specifically including: A sensor is arranged on the filter surface to detect the surface temperature; When the surface temperature exceeds 80°C, reduce the heating power; When the surface temperature exceeds 100°C, stop heating immediately.

7. A control method for a range hood with a filter self-cleaning function as claimed in claim 1, characterized in that: The self-cleaning controller is provided with an online control button for manual self-cleaning control, which specifically includes: An online control button is provided on the self-cleaning controller, and when the button is pressed, manual self-cleaning will be started; After starting manual self-cleaning, the self-cleaning controller will start a short self-cleaning, update the heating time of the second self-cleaning and the cooling time of the second self-cleaning, and complete a self-cleaning.

8. A range hood control system with a filter self-cleaning function, characterized in that: The system is used to implement the method according to any one of claims 1 to 7, and the system comprises: Start the self-cleaning module, which is used to start the range hood and set the range hood self-cleaning process; A self-cleaning control analysis module, used to set the self-cleaning controller of the range hood and calculate the heating time of the secondary self-cleaning and the cooling time of the secondary self-cleaning; A power-off self-cleaning module is used to start the power-off self-cleaning mode when the range hood is in a power-off state; The periodic self-cleaning module is used to start the periodic self-cleaning timer after each self-cleaning and regularly start the periodic self-cleaning; Over-temperature protection module, used to set a sensor on the filter surface to detect the surface temperature and perform over-temperature protection; The manual working module is used to set an online control button on the self-cleaning controller to perform manual self-cleaning control.

9. A computer-readable storage medium storing computer program instructions, characterized in that: The computer program instructions implement the method according to any one of claims 1 to 7 when executed by a processor.

10. An electronic device comprising a memory and a processor, characterized in that: The memory is used to store one or more computer program instructions, wherein the one or more computer program instructions are executed by the processor to implement the method according to any one of claims 1-7.

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