Self-cleaning method of wall-hanging stove, controller and wall-hanging stove

Abstract

The invention relates to the technical field of wall-hanging stoves, and discloses a wall-hanging stove self-cleaning method, a controller and a wall-hanging stove.The wall-hanging stove self-cleaning method comprises the steps that if the wall-hanging stove is in a combustion state, a cleaning request for the wall-hanging stove is received, and the rotating speed of a draught fan of the wall-hanging stove and / or the opening degree of a gas proportional valve of the wall-hanging stove are / is adjusted so that a combustion chamber of the wall-hanging stove can generate vibration; recording corresponding target vibration parameters when the combustion chamber of the wall-hanging stove vibrates; and the wall-hanging stove is controlled to burn based on the target vibration parameters, and the wall-hanging stove is controlled to be shut down after burning reaches a first preset duration. According to the method, after a self-cleaning mode is started, a combustion chamber of the wall-hanging stove generates specific vibration by precisely adjusting the rotating speed of a fan of the wall-hanging stove and / or the opening degree of a gas proportional valve, dirt attached to the key parts is gradually loosened and falls off under the vibration effect, self-cleaning is achieved, a user can operate the method by himself / herself, and the user experience is improved. Manual cleaning by professional technicians is not needed, the cleaning cost is saved, and meanwhile the cleaning efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wall-mounted boilers, and in particular to a self-cleaning method for a wall-mounted boiler, a controller, and the wall-mounted boiler. Background Art

[0002] Gas wall-mounted boilers, as efficient and flexible stand-alone heating and domestic hot water equipment, have been widely used in homes, businesses, and small public buildings. The boiler's combustion chamber is used to mix fuel and air for full combustion. However, when the boiler is in operation for a long time, it produces combustion byproducts while burning, and also introduces environmental particles with the combustion-supporting air. Environmental particles, combustion byproducts, and other substances are deposited inside the combustion chamber, at the smoke duct outlet, and at the smoke duct inlet. Furthermore, because the high-temperature flue gas produced by combustion contains a large amount of steam, the steam easily condenses into water droplets when it encounters cold air at the smoke duct outlet. When the ambient temperature is below freezing, the water droplets freeze into ice and adhere to the inner wall of the smoke duct. Therefore, the operation of the wall-mounted boiler is easily affected by garbage blockage. Existing technologies usually require manual cleaning, which is costly and inefficient. Summary of the Invention

[0003] The technical problem solved by the present invention is to provide a self-cleaning method, a controller and a wall-mounted boiler for a wall-mounted boiler, which effectively solves the problem of low cleaning efficiency due to garbage blockage in the wall-mounted boiler.

[0004] The above technical problems are solved by the following technical solutions:

[0005] A self-cleaning method for a wall-mounted boiler, the method comprising:

[0006] If the wall-mounted boiler is in a combustion state, receiving a cleaning request for the wall-mounted boiler, adjusting a fan speed of the wall-mounted boiler and / or an opening of a gas proportional valve of the wall-mounted boiler to vibrate a combustion chamber of the wall-mounted boiler;

[0007] Recording target vibration parameters corresponding to the vibration of the combustion chamber of the wall-mounted boiler, wherein the target vibration parameters include a fan speed of the wall-mounted boiler and an opening of a gas proportional valve of the wall-mounted boiler;

[0008] The wall-mounted boiler is controlled to burn based on the target vibration parameter, and the wall-mounted boiler is controlled to be extinguished after the combustion reaches a first preset time.

[0009] Compared with the background technology, the self-cleaning method of the wall-mounted boiler described in the present invention has the following beneficial effects: after the self-cleaning mode is turned on, the method accurately adjusts the fan speed of the wall-mounted boiler and / or the opening of the gas proportional valve to generate specific vibrations in the combustion chamber of the wall-mounted boiler. This vibration not only acts on the combustion chamber itself, but can also be effectively transmitted to components such as the heat exchanger and the smoke pipe, so that the dirt attached to these key parts gradually loosens and falls off under the action of vibration, thereby achieving self-cleaning. Users can operate it by themselves without the need for manual cleaning by professional technicians, which saves cleaning costs and significantly improves cleaning efficiency.

[0010] In one embodiment, adjusting the fan speed of the wall-mounted boiler and / or the opening of the gas proportional valve of the wall-mounted boiler to cause the combustion chamber of the wall-mounted boiler to vibrate includes:

[0011] Adjusting the fan speed of the wall-mounted boiler to a preset fan speed and adjusting the opening of the gas proportional valve to cause the combustion chamber of the wall-mounted boiler to vibrate;

[0012] Alternatively, the opening of the gas proportional valve of the wall-mounted boiler is adjusted to a preset proportional valve opening, and the fan speed is adjusted to cause the combustion chamber of the wall-mounted boiler to vibrate;

[0013] Alternatively, the fan speed or the opening of the gas proportional valve is adjusted to cause the combustion chamber of the wall-mounted boiler to vibrate.

[0014] In one embodiment, the method further includes: controlling the wall-mounted boiler to turn off the flame, and then including:

[0015] The wall-mounted boiler is controlled to ignite again, the wall-mounted boiler is controlled to burn based on the target vibration parameter, and the wall-mounted boiler is controlled to extinguish after the combustion reaches a second preset time.

[0016] In one embodiment, the method further includes: controlling the wall-mounted boiler to ignite again and recording the number of ignitions;

[0017] After controlling the wall-mounted boiler to extinguish after the combustion reaches a second preset duration, the method further includes:

[0018] Return to execute the operation of controlling the wall-mounted boiler to ignite again and record the number of ignitions. When the number of ignitions reaches the preset number of ignitions, control the wall-mounted boiler to extinguish and increase the fan speed to the preset purge speed.

[0019] In one embodiment, the method further includes: controlling the wall-mounted boiler to turn off the flame, and then including:

[0020] The wall-mounted boiler is controlled to ignite again and then extinguish.

[0021] In one embodiment, the method further includes: controlling the wall-mounted boiler to extinguish after ignition again and recording the number of ignitions; repeatedly performing the operation of controlling the wall-mounted boiler to extinguish after ignition again and recording the number of ignitions, and when the number of ignitions reaches a preset number of ignitions, controlling the wall-mounted boiler to extinguish and increasing the fan speed to a preset purge speed.

[0022] In one embodiment, the method further includes: when the fan runs at the preset purge speed for a third preset time, determining that the wall-mounted boiler completes the cleaning request.

[0023] In one embodiment, after controlling the wall-mounted boiler to ignite again, the method further includes:

[0024] Adjusting the opening of the gas proportional valve and detecting the combustion chamber pressure;

[0025] determining a target opening of the gas proportional valve when the combustion chamber pressure is equal to a preset explosion pressure or the combustion chamber pressure is equal to a maximum explosion pressure;

[0026] The wall-mounted boiler is controlled to ignite again and then extinguish, and the gas proportional valve is adjusted to the target opening.

[0027] A self-cleaning device for a wall-mounted boiler, comprising:

[0028] a request receiving module, configured to receive a cleaning request for the boiler if the boiler is in a combustion state, and adjust a fan speed of the boiler and / or an opening of a gas proportional valve of the boiler to vibrate the combustion chamber of the boiler;

[0029] a data recording module, configured to record target vibration parameters corresponding to vibrations generated in the combustion chamber of the wall-mounted boiler, the target vibration parameters including a fan speed of the wall-mounted boiler and an opening of a gas proportional valve of the wall-mounted boiler;

[0030] a flameout module, configured to control the combustion of the wall-mounted boiler based on the target vibration parameter, and to control the flameout of the wall-mounted boiler after the combustion reaches a first preset time;

[0031] A controller for a wall-mounted boiler, comprising:

[0032] A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the above-mentioned self-cleaning method of the wall-mounted boiler by executing the computer instructions.

[0033] A wall-mounted boiler comprises the above-mentioned controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 A schematic diagram of a self-cleaning method for a wall-mounted boiler according to an embodiment of the present invention;

[0036] Figure 2 A schematic diagram of a self-cleaning method for a wall-mounted boiler according to an embodiment of the present invention;

[0037] Figure 3 Schematic diagram of a self-cleaning device for a wall-mounted boiler according to an embodiment of the present invention;

[0038] Figure 4 Schematic diagram of the structure of a controller according to an embodiment of the present invention;

[0039] Figure 5 Schematic diagram of the structure of a wall-mounted boiler according to an embodiment of the present invention.

[0040] Reference numerals:

[0041] 1. Oxygen sensor; 2. Exhaust pipe; 3. Stepper motor gas proportional valve; 4. Adjustable speed fan; 5. Main control board; 6. Oxygen sensor signal line; 7. Adjustable speed fan power line; 8. Pressure sensor; 9. Wall-mounted boiler; 10. Combustion chamber. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0043] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0044] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0045] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0046] Gas wall-mounted boilers, as efficient and flexible standalone heating and domestic hot water systems, have become popular in homes, businesses, and small public buildings. However, during long-term operation, the combustion of fuel and air in the combustion chamber not only produces byproducts but also introduces ambient particulate matter. These substances, along with combustion byproducts, tend to accumulate in the combustion chamber and at the flue inlet and outlet. Furthermore, the high-temperature flue gas produced by combustion is rich in water vapor, which easily condenses into water droplets at the flue outlet when exposed to cold air. At low temperatures, this condensation forms ice that adheres to the flue walls. The resulting blockages are currently primarily handled manually, which is costly and inefficient.

[0047] According to an embodiment of the present invention, a self-cleaning method for a wall-mounted boiler is provided. Figure 1 Flowchart of the self-cleaning method of the wall-mounted boiler according to an embodiment of the present invention. Figure 1 As shown, the process includes the following steps:

[0048] Step S101: If the boiler is in a combustion state, a request for cleaning the boiler is received, and the fan speed of the boiler and / or the opening of the gas proportional valve of the boiler are adjusted to vibrate the combustion chamber of the boiler.

[0049] When the boiler is burning, it receives a cleaning request and initiates self-cleaning mode. The boiler can be equipped with a control interface that connects to an external terminal device, such as a mobile phone, computer, or tablet. Users can issue control commands through the control interface or through the external terminal device. Specifically, when the boiler is operating normally and burning, the user can trigger a cleaning request by pressing a button on the control interface or by issuing a cleaning request through an external terminal device. Upon receiving the cleaning request, the boiler initiates self-cleaning mode.

[0050] After entering self-cleaning mode, the boiler's fan speed and gas proportional valve opening are adjusted. Both the fan speed and the gas proportional valve opening can be adjusted, or just the fan speed or the gas proportional valve opening. The boiler's fan speed affects the air supply to the combustion chamber, while the gas proportional valve opening affects the gas supply. By adjusting the fan speed and the target gas proportional valve opening, the combustion state within the combustion chamber can be altered, thereby affecting the boiler's vibration state. The purpose of this adjustment is to bring the boiler's vibration state to a preset state. This state can be detected using multiple parameters, including vibration amplitude and frequency. When the boiler's vibration state reaches the preset state and the boiler is in combustion mode, vibration loosens and shakes off impurities such as dust and carbon deposits adhering to the boiler's interior.

[0051] Combustion vibration occurs when the periodic fluctuations in the flame's heat release during combustion match the acoustic or structural resonant frequency of the combustion chamber. When the flame release periodically fluctuates due to flame instability (such as flame lift or flashback, which is caused by gradually increasing the oxygen content by 1% to cause flame lift, resulting in periodic vibrations; or gradually decreasing the oxygen content to cause flashback, resulting in periodic vibrations), and the frequency of the heat release matches the natural frequency of the system, it stimulates pressure fluctuations that conform to the Rayleigh criterion, resulting in oscillatory combustion. The corresponding vibration frequency is sensed by the pressure sensor and maintained at that frequency for operation.

[0052] In some optional embodiments, the fan speed and target opening of the gas proportional valve of the wall-mounted boiler can be adjusted in either a sequential order or simultaneously. If so, the fan speed can be adjusted first, followed by the target opening of the gas proportional valve; alternatively, the target opening of the gas proportional valve can be adjusted first, followed by the fan speed. Fan speed is directly related to power; adjusting fan speed effectively adjusts fan power. Excessively high or low power can lead to uncontrollable vibration.

[0053] In some optional embodiments, the method also includes: determining that the vibration state of the wall-mounted boiler reaches a preset state based on the following conditions: the pressure value of the combustion chamber of the wall-mounted boiler reaches a preset pressure threshold, the vibration amplitude reaches a preset vibration amplitude, and the vibration frequency reaches a preset vibration frequency.

[0054] The preset pressure threshold is pre-set based on the boiler's design parameters, combustion characteristics, and self-cleaning requirements. If the combustion chamber pressure is too low, it may indicate insufficient gas supply or excessive air supply, resulting in incomplete combustion and insufficient heat and vibration to loosen impurities inside the boiler. If the combustion chamber pressure is too high, it may cause excessive combustion and excessive pressure fluctuations, which not only affect the safe operation of the boiler but may also damage internal components. Therefore, only when the combustion chamber pressure value reaches the preset pressure threshold does it indicate that the combustion state is at a relatively stable and appropriate level, providing the basic conditions for the vibration state to reach the preset state. The boiler is equipped with a pressure sensor for real-time monitoring of the combustion chamber pressure value.

[0055] Vibration amplitude refers to the maximum displacement of the vibration generated during the operation of the wall-mounted boiler, and vibration frequency refers to the speed of the vibration generated during the operation of the wall-mounted boiler. The vibration amplitude and vibration frequency of the combustion chamber are detected in real time by a pressure sensor.

[0056] Step S102: Record target vibration parameters corresponding to the vibration of the combustion chamber of the wall-mounted boiler.

[0057] The target vibration parameters include the fan speed of the wall-mounted boiler and the opening of the gas proportional valve of the wall-mounted boiler.

[0058] When the combustion chamber of the wall-mounted boiler vibrates, current target vibration parameters are stored. The target vibration parameters include the fan speed of the wall-mounted boiler and the opening of the gas proportional valve of the wall-mounted boiler.

[0059] Step S103: Control the wall-mounted boiler to burn based on the target vibration parameter, and control the wall-mounted boiler to turn off after the combustion reaches a first preset time.

[0060] When the combustion chamber of the wall-mounted boiler vibrates and the duration reaches a first preset time, the wall-mounted boiler is controlled to be extinguished. When the wall-mounted boiler vibrates, impurities such as dust and carbon deposits attached to the inside of the wall-mounted boiler will loosen and fall off.

[0061] The self-cleaning method for a wall-mounted boiler provided in an embodiment of the present invention includes: if the wall-mounted boiler is in a combustion state, receiving a cleaning request for the wall-mounted boiler, adjusting the fan speed of the wall-mounted boiler and / or the opening of the gas proportional valve of the wall-mounted boiler to cause the combustion chamber of the wall-mounted boiler to vibrate; recording target vibration parameters corresponding to the vibration of the combustion chamber of the wall-mounted boiler, the target vibration parameters including the fan speed of the wall-mounted boiler and the opening of the gas proportional valve of the wall-mounted boiler; controlling the combustion of the wall-mounted boiler based on the target vibration parameters, and controlling the wall-mounted boiler to extinguish after the combustion reaches a first preset duration. After the self-cleaning mode is activated, the method accurately adjusts the fan speed of the wall-mounted boiler and / or the opening of the gas proportional valve of the wall-mounted boiler to cause the combustion chamber of the wall-mounted boiler to generate specific vibrations. This vibration not only acts on the combustion chamber itself, but can also be effectively transmitted to components such as the heat exchanger and the smoke pipe, causing dirt attached to these key parts to gradually loosen and fall off under the action of the vibration, thereby achieving self-cleaning. The user can operate it by themselves, eliminating the need for manual cleaning by professional technicians, saving cleaning costs and significantly improving cleaning efficiency.

[0062] In some optional embodiments, in step S101, the fan speed of the wall-mounted boiler and / or the opening of the gas proportional valve of the wall-mounted boiler are adjusted to vibrate the combustion chamber of the wall-mounted boiler, such as Figure 2 Shown, including:

[0063] Step S201: adjusting the fan speed of the wall-mounted boiler to a preset fan speed, and adjusting the opening of the gas proportional valve to cause the combustion chamber of the wall-mounted boiler to vibrate.

[0064] First, adjust the fan speed to the preset setting. This speed directly affects the amount of air entering the boiler's combustion chamber. The preset speed is a pre-set value based on the boiler's design parameters, combustion characteristics, and self-cleaning requirements. For example, a higher fan speed provides more air, promoting more complete fuel combustion. However, a speed that is too high may cause excessive airflow, affecting combustion stability. A speed that is too low may result in insufficient air supply, leading to incomplete combustion.

[0065] After the fan speed reaches the preset value, the gas proportional valve opening is adjusted. The gas proportional valve controls the amount of gas entering the combustion chamber. By adjusting the gas proportional valve opening, the gas-air mixture ratio is altered, thereby affecting the intensity and stability of combustion. During the adjustment process, the boiler's vibration status is monitored in real time. When the vibration level reaches the preset level, the gas proportional valve opening adjustment is stopped.

[0066] With the boiler's fan running at a preset speed, the gas proportional valve opening is adjusted while the boiler's vibration status is monitored in real time. Changes in the gas proportional valve opening directly affect the amount of gas entering the combustion chamber. Increasing the opening increases the gas supply, while decreasing it decreases it. By varying the gas supply, the gas-air mixture ratio can be adjusted, thereby affecting the intensity and stability of combustion.

[0067] When adjusting the gas proportional valve opening, the boiler's vibration status needs to be monitored in real time. This can be achieved using a pressure sensor installed on the boiler. The pressure sensor collects real-time vibration data and transmits it to the control system. Based on this data, the control system determines whether the boiler's vibration status is changing, as well as the direction and extent of the change.

[0068] When vibration is detected in real time, it indicates that the current gas-air mixture ratio and combustion state meet the requirements for self-cleaning. The gas proportional valve opening at this time is recorded. This opening value is the parameter that causes the vibration state of the wall-mounted boiler to reach the preset state at the current fan speed.

[0069] In step S202, the boiler's gas proportional valve opening is adjusted to a preset opening, and the fan speed is adjusted to vibrate the boiler's combustion chamber. The gas proportional valve opening is first adjusted to a preset opening, which is pre-set based on the boiler's design and self-cleaning requirements. A suitable gas proportional valve opening ensures a gas-air mixture ratio that is conducive to combustion and cleaning. For example, in self-cleaning mode, a relatively stable gas supply may be required to ensure combustion stability and effective cleaning of the boiler's internal components.

[0070] After the gas proportional valve opening reaches the preset value, the fan speed begins to adjust. The purpose of adjusting the fan speed at this point is to further optimize combustion and airflow conditions within the boiler and generate vibration in the combustion chamber. An appropriate gas proportional valve opening ensures that the appropriate amount of gas enters the combustion chamber, matching the amount of air introduced by the subsequent fan speed adjustment, thereby creating a gas-air mixture ratio that is conducive to combustion and cleaning. Specifically, the boiler's control system sends commands to the gas proportional valve to adjust the opening to the preset value. The gas proportional valve contains an adjustable valve core or similar mechanism that changes its position through a motor or electromagnetic force, thereby controlling the size of the gas passageway. During the adjustment process, the control system monitors the actual opening of the gas proportional valve in real time to ensure it is consistent with the preset value. If the actual opening deviates from the preset value, the control system promptly adjusts the command and fine-tunes the drive mechanism until the actual opening reaches the preset value.

[0071] After the gas proportional valve opening reaches the preset value, the fan speed is adjusted to further optimize combustion and airflow conditions within the boiler. The fan speed directly affects the amount of air entering the combustion chamber. By varying the air volume, the gas-air mixture ratio is adjusted, which in turn affects the intensity of combustion and the resulting vibrations. The boiler's control system sends a command to the fan to start operation and adjust its speed. Fans are typically driven by electric motors. The motor's speed is adjusted by varying the motor's power supply frequency, voltage, or current, thereby varying the fan blade speed and generated air volume. During the adjustment process, the control system gradually increases or decreases the fan speed according to a preset adjustment strategy until the boiler's combustion chamber vibrates.

[0072] Step S203: adjusting the fan speed or the opening of the gas proportional valve to vibrate the combustion chamber of the wall-mounted boiler.

[0073] Adjust the fan speed and continuously monitor for vibration until the combustion chamber of the wall-mounted boiler vibrates, recording the corresponding fan speed. Alternatively, adjust only the opening of the gas proportional valve and continuously monitor for vibration until the combustion chamber of the wall-mounted boiler vibrates, recording the corresponding fan speed.

[0074] During the actual execution process, one of the steps S201 to S203 is selected for execution, and specific settings can be made according to actual needs.

[0075] In some optional embodiments, after the above step S103, the method further includes: controlling the wall-mounted boiler to ignite again, controlling the wall-mounted boiler to burn based on the target vibration parameters, and controlling the wall-mounted boiler to extinguish after the combustion reaches a second preset time.

[0076] After the boiler is turned off, the system controls the boiler to ignite again. After ignition, the system controls the operation of the boiler based on the previously recorded target vibration parameters. The fan speed is controlled to run at the recorded speed, and the opening of the gas proportional valve is adjusted to the recorded opening.

[0077] Reigniting a wall-mounted boiler can cause deflagration and vibration, shaking off dust, dirt, ice, and blockages in the combustion chamber. Deflagration and vibration occur when a gas (such as natural gas or liquefied petroleum gas) mixed with air reaches a specific concentration (usually 5%-15%) and encounters an open flame or ignition source in a confined or semi-confined space, resulting in a sudden, intense combustion and release of large amounts of energy. This phenomenon is characterized by a rapid reaction and a sudden increase in pressure. Only by shutting down the entire boiler and then re-igniting it can deflagration occur, generating a sudden surge of high pressure.

[0078] After the boiler has been running for a second preset time based on the target vibration parameters, indicating that the cleaning process has progressed for a certain period of time, the boiler will be controlled to stop vibrating. The user can manually request to stop cleaning to exit self-cleaning mode, or the system can automatically exit self-cleaning mode to stop vibration.

[0079] In some optional embodiments, the method further includes: controlling the wall-mounted boiler to ignite again and recording the number of ignitions.

[0080] After controlling the wall-mounted boiler to shut down and ignite again, start recording the number of ignitions.

[0081] After controlling the wall-mounted boiler to extinguish after the combustion reaches a second preset time, the method also includes: returning to execute the operation of controlling the wall-mounted boiler to ignite again and recording the number of ignitions. When the number of ignitions reaches the preset number of ignitions, controlling the wall-mounted boiler to extinguish and increasing the fan speed to the preset purge speed.

[0082] The boiler is re-ignited and shuts down after burning for a second preset time. The process then returns to the step of controlling the boiler's re-ignition and recording the number of ignitions, creating a cycle of multiple ignitions followed by shutting down and re-igniting. During the ignition-shutdown-reignition process, the second ignition can cause a deflagration, which in turn shakes out and removes internal dirt with greater force. This cycle ensures that the boiler's interior is thoroughly cleaned.

[0083] Monitor the number of ignitions in real time and compare it with the preset number of ignitions. The preset number of ignitions is determined based on factors such as the model of the wall-mounted boiler, usage, and cleaning requirements. When the number of ignitions reaches the preset number of ignitions, it indicates that the preset number of cleaning cycles has been completed, and the entire self-cleaning process needs to be ended. Once it is determined that the number of ignitions has reached the preset number of ignitions, the system will immediately control the wall-mounted boiler to extinguish and stop the combustion process. Increase the fan speed to the preset purge speed. Increasing the fan speed can generate a stronger airflow, which can quickly and effectively blow out the dirt and dust shaken off from the inside of the wall-mounted boiler during the cleaning process to the outside of the wall-mounted boiler. The preset purge speed is set according to the structure and cleaning requirements of the wall-mounted boiler, which can ensure that the inside of the wall-mounted boiler is cleaned in a short time, while avoiding damage to the internal components of the wall-mounted boiler due to excessively high fan speed.

[0084] In some optional embodiments, after controlling the boiler to shut down, the method further includes controlling the boiler to re-ignite and then shut down. After the boiler shuts down, the control system issues an ignition command again, controlling the boiler to re-ignite and shut down after continuous combustion for a preset time period. After shutting down, the boiler is re-ignited and burned. By repeating the ignition-shutdown-reignition-shutdown process, vibration after the first ignition and deflagration after the second ignition are achieved.

[0085] Furthermore, the method also includes: controlling the wall-mounted boiler to ignite again and then turn off the flame and record the number of ignitions; repeatedly controlling the wall-mounted boiler to ignite again and then turn off the flame and record the number of ignitions, and when the number of ignitions reaches the preset number of ignitions, controlling the wall-mounted boiler to turn off the flame and increasing the fan speed to the preset purge speed.

[0086] The wall-mounted boiler is ignited again and extinguished after burning for a second preset time, and returns to the step of controlling the wall-mounted boiler to ignite again and record the number of ignitions. The repeated execution process forms multiple cleaning cycles.

[0087] Monitor the number of ignitions in real time and compare it with the preset number of ignitions. The preset number of ignitions is determined based on factors such as the model of the wall-mounted boiler, usage, and cleaning requirements. When the number of ignitions reaches the preset number of ignitions, it indicates that the preset number of cleaning cycles has been completed, and the entire self-cleaning process needs to be ended. Once it is determined that the number of ignitions has reached the preset number of ignitions, the system will immediately control the wall-mounted boiler to extinguish and stop the combustion process. Increase the fan speed to the preset purge speed. Increasing the fan speed can generate a stronger airflow, which can quickly and effectively blow out the dirt and dust shaken off from the inside of the wall-mounted boiler during the cleaning process to the outside of the wall-mounted boiler. The preset purge speed is set according to the structure and cleaning requirements of the wall-mounted boiler, which can ensure that the inside of the wall-mounted boiler is cleaned in a short time, while avoiding damage to the internal components of the wall-mounted boiler due to excessively high fan speed.

[0088] In some optional implementations, the method further includes: when the fan runs at the preset purge speed for a third preset time period, determining that the wall-mounted boiler completes the cleaning request.

[0089] The preset purge speed is determined based on a combination of factors, including the boiler's internal structure, component characteristics, and cleaning requirements. For example, a boiler with a long flue pipe and complex internal structure may require a higher fan speed to generate sufficient airflow to remove dirt from every corner. For simpler boilers with less contamination, the preset purge speed can be lowered. When the fan begins operating at the preset purge speed, it continuously draws in external air and accelerates it, creating a high-speed airflow. This airflow passes through various channels within the boiler, such as the combustion chamber, heat exchanger, and flue pipe, impacting and sweeping away any dirt adhering to the surface. This process lifts dirt from the component surfaces and carries it out of the boiler, achieving the desired cleaning effect.

[0090] The third preset duration is set based on factors such as the boiler's cleaning requirements, fan performance, and the amount of dirt. If the boiler is heavily soiled or requires a high level of cleaning, a longer run time may be required to ensure complete removal. If the boiler is lightly soiled or requires less cleaning, the run time can be shortened.

[0091] When the fan runs at the preset purge speed for the third preset time, the system will determine that the boiler has completed the cleaning request based on preset logic and conditions. Once the boiler has completed the cleaning request, the system will stop the fan, ending the entire self-cleaning process.

[0092] In some optional implementations, after controlling the wall-mounted boiler to ignite again, the method further includes:

[0093] Step S301, adjusting the opening of the gas proportional valve and detecting the combustion chamber pressure;

[0094] Step S302, determining the target opening of the gas proportional valve when the combustion chamber pressure is equal to the preset explosion pressure or the combustion chamber pressure is equal to the maximum explosion pressure;

[0095] Step S303: Control the wall-mounted boiler to ignite again and then extinguish, and adjust the gas proportional valve to the target opening.

[0096] After controlling the boiler to reignite, the system gradually adjusts the opening of the gas proportional valve according to a preset strategy or algorithm. Different openings alter the gas flow rate entering the combustion chamber, thereby affecting the gas-air mixture ratio. For example, increasing the opening increases the gas supply, while decreasing the opening decreases the gas supply. While adjusting the gas proportional valve opening, the system monitors the combustion chamber pressure in real time. Combustion chamber pressure is a key parameter reflecting the combustion state. Using a pressure sensor, the system obtains real-time pressure data within the combustion chamber. The preset deflagration pressure is an ideal pressure value set based on factors such as the boiler's design requirements, safety standards, and cleaning effectiveness. When the combustion chamber pressure reaches this preset value, it indicates that the combustion is generating sufficient energy and vibration to help remove dirt from the boiler's interior.

[0097] While adjusting the gas proportional valve opening and monitoring the combustion chamber pressure, the system continuously compares the actual measured combustion chamber pressure with the preset and maximum explosion pressures. When the combustion chamber pressure equals the preset explosion pressure, the gas proportional valve opening is set to one of the target openings that meets the preset explosion conditions. If, during the adjustment process, the combustion chamber pressure never reaches the preset explosion pressure but does reach the maximum explosion pressure, the gas proportional valve opening is set to another target opening. In this way, the system can find the gas proportional valve opening that produces the appropriate explosion pressure under different conditions.

[0098] After the target opening is determined, the gas proportional valve is adjusted to the target opening during each ignition-extinguishing-reignition process, thereby achieving deflagration after multiple extinguishing and re-ignition.

[0099] For example, assume that ignition and deflagration are performed at a valve opening of 10% with an oxygen content, and detect whether the pressure generated by the deflagration can meet the requirements of the pressure sensor. If not, continue to ignite and deflagration at a valve opening of 9% with an oxygen content, and so on, until the generated deflagration pressure reaches the required value of the pressure sensor or the maximum deflagration pressure is recorded during the process, and ignition and deflagration continue in this state.

[0100] This embodiment also provides a self-cleaning device for a wall-mounted boiler, which is used to implement the above-mentioned embodiments and preferred embodiments. Details already described will not be repeated here. As used below, the term "module" may refer to a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation using hardware, or a combination of software and hardware, is also possible and contemplated.

[0101] This embodiment provides a self-cleaning device for a wall-mounted boiler. Figure 3 Shown, including:

[0102] a request receiving module, configured to receive a cleaning request for the boiler if the boiler is in a combustion state, and adjust a fan speed of the boiler and / or an opening of a gas proportional valve of the boiler to vibrate the combustion chamber of the boiler;

[0103] a data recording module, configured to record target vibration parameters corresponding to vibrations generated in the combustion chamber of the wall-mounted boiler, the target vibration parameters including a fan speed of the wall-mounted boiler and an opening of a gas proportional valve of the wall-mounted boiler;

[0104] The flameout module is used to control the combustion of the wall-mounted boiler based on the target vibration parameter, and to control the flameout of the wall-mounted boiler after the combustion reaches a first preset time.

[0105] The further functional description of each of the above modules is the same as that of the above corresponding embodiments and will not be repeated here.

[0106] The self-cleaning device of the wall-mounted boiler in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions.

[0107] The embodiment of the present invention also provides a wall-mounted boiler controller having the above Figure 2 The self-cleaning device of the wall-mounted boiler is shown.

[0108] See also Figure 4 , Figure 4: is a schematic diagram of the structure of a controller of a wall-mounted boiler provided by an optional embodiment of the present invention, such as Figure 4 As shown, the controller of the wall-mounted boiler includes: one or more processors 11, a memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. The various components are connected to each other using different buses for communication, and can be installed on a common mainboard or installed in other ways as needed. The processor can process instructions executed in the controller of the wall-mounted boiler, including instructions stored in or on the memory to display graphical information of the GUI on an external input / output device (such as a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple wall-mounted boiler controllers can be connected, and each device provides some necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 4 A processor 11 is taken as an example.

[0109] The processor 11 may be a central processing unit, a network processor, or a combination thereof. The processor 11 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic, or any combination thereof.

[0110] The memory 20 stores instructions that can be executed by at least one processor 11, so that the at least one processor 11 executes the method shown in the above embodiment.

[0111] The memory 20 may include a program storage area and a data storage area. The program storage area may store an operating system and application programs required for at least one function; the data storage area may store data generated based on the use of the boiler controller. Furthermore, the memory 20 may include high-speed random access memory and non-transient memory, such as at least one disk storage device, flash memory device, or other non-transient solid-state memory device. In some optional embodiments, the memory 20 may optionally include a memory remotely located relative to the processor 11, and such remote memory may be connected to the boiler controller via a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0112] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0113] The controller of the wall-mounted boiler further comprises a communication interface 30 for the controller of the wall-mounted boiler to communicate with other devices or a communication network.

[0114] The embodiment of the present invention also provides a computer-readable storage medium. The above-mentioned method according to the embodiment of the present invention can be implemented in hardware, firmware, or implemented as a computer code that can be recorded in a storage medium, or implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and downloaded through a network and will be stored in a local storage medium, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state drive, etc.; further, the storage medium can also include a combination of the above-mentioned types of memory. It can be understood that a computer, a processor, a microprocessor controller or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor or hardware, the method shown in the above embodiment is implemented.

[0115] Figure 5 This is a structural schematic diagram of a wall-mounted boiler provided by an optional embodiment of the present invention, including: an oxygen sensor 1, a smoke exhaust pipe 2, a stepper motor gas proportional valve 3, an adjustable speed fan 4, a main control board 5, an oxygen sensor signal line 6, an adjustable speed fan power line 7, a pressure sensor 8, a wall-mounted boiler 9, and a combustion chamber 10.

[0116] The main control board 5 can preset the maximum and minimum fan speeds, as well as the maximum and minimum step counts of the stepper motor's gas proportional valve. The actual fan speed and proportional valve steps are fed back to the main control board 5 in real time. An oxygen sensor 1, placed in the combustion chamber 10, provides real-time feedback on the oxygen content in the flue gas. The pressure sensor 8 provides real-time feedback on pressure changes during combustion.

[0117] A portion of the present invention may be applied as a computer program product, such as a computer program instruction, which, when executed by a computer, can call or provide the method and / or technical solution according to the present invention through the operation of the computer. Those skilled in the art should understand that the form in which the computer program instruction exists in a computer-readable medium includes, but is not limited to, a source file, an executable file, an installation package file, etc. Accordingly, the way in which the computer program instruction is executed by the computer includes, but is not limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding installed program. Here, the computer-readable medium may be any available computer-readable storage medium or communication medium that can be accessed by the computer.

[0118] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0119] The specific contents of the above-mentioned specific embodiments merely represent several embodiments of the present invention. While the description is relatively specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the scope of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the appended claims.

Claims

1. A self-cleaning method for a wall-mounted boiler, characterized in that: The method comprises: If the wall-mounted boiler is in a combustion state, receiving a cleaning request for the wall-mounted boiler, adjusting a fan speed of the wall-mounted boiler and / or an opening of a gas proportional valve of the wall-mounted boiler to vibrate a combustion chamber of the wall-mounted boiler; Recording target vibration parameters corresponding to the vibration of the combustion chamber of the wall-mounted boiler, wherein the target vibration parameters include a fan speed of the wall-mounted boiler and an opening of a gas proportional valve of the wall-mounted boiler; The wall-mounted boiler is controlled to burn based on the target vibration parameter, and the wall-mounted boiler is controlled to be extinguished after the combustion reaches a first preset time.

2. The method according to claim 1, characterized in that The adjusting the fan speed of the wall-mounted boiler and / or the opening of the gas proportional valve of the wall-mounted boiler to cause the combustion chamber of the wall-mounted boiler to vibrate includes: Adjusting the fan speed of the wall-mounted boiler to a preset fan speed and adjusting the opening of the gas proportional valve to cause the combustion chamber of the wall-mounted boiler to vibrate; Alternatively, the opening of the gas proportional valve of the wall-mounted boiler is adjusted to a preset proportional valve opening, and the fan speed is adjusted to cause the combustion chamber of the wall-mounted boiler to vibrate.

3. The method according to claim 1, characterized in that The method further includes: controlling the wall-mounted boiler to extinguish, and then including: The wall-mounted boiler is controlled to ignite again, the wall-mounted boiler is controlled to burn based on the target vibration parameter, and the wall-mounted boiler is controlled to extinguish after the combustion reaches a second preset time.

4. The method according to claim 3, characterized in that The method further comprises: Controlling the wall-mounted boiler to ignite again and recording the number of ignitions; The step of controlling the wall-mounted boiler to extinguish after the combustion reaches a second preset time period includes: Return to execute the operation of controlling the wall-mounted boiler to ignite again and record the number of ignitions. When the number of ignitions reaches the preset number of ignitions, control the wall-mounted boiler to extinguish and increase the fan speed to the preset purge speed.

5. The method according to claim 1, wherein The method further includes: controlling the wall-mounted boiler to extinguish, and then including: The wall-mounted boiler is controlled to ignite again and then extinguish.

6. The method according to claim 5, characterized in that The method also includes: controlling the wall-mounted boiler to ignite again and then turn off the flame and record the number of ignitions; repeatedly performing the operation of controlling the wall-mounted boiler to ignite again and then turn off the flame and record the number of ignitions, and when the number of ignitions reaches a preset number of ignitions, controlling the wall-mounted boiler to turn off the flame and increasing the fan speed to a preset purge speed.

7. The method according to claim 4 or 6, characterized in that The method further includes: when the fan runs at the preset purge speed for a third preset time, determining that the wall-mounted boiler completes the cleaning request.

8. The method according to claim 3, characterized in that After controlling the wall-mounted boiler to ignite again, the method further includes: Adjusting the opening of the gas proportional valve and detecting the combustion chamber pressure; determining a target opening of the gas proportional valve when the combustion chamber pressure is equal to a preset explosion pressure or the combustion chamber pressure is equal to a maximum explosion pressure; The wall-mounted boiler is controlled to ignite again and then extinguish, and the gas proportional valve is adjusted to the target opening.

9. A controller for a wall-mounted boiler, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the self-cleaning method of the wall-mounted boiler according to any one of claims 1 to 7 by executing the computer instructions.

10. A wall-mounted boiler, characterized in that: The wall-mounted boiler includes the controller according to claim 9.

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