Fan control method, device and controller of heating stove and heating stove

Abstract

This invention relates to the field of combustion equipment technology, and discloses a fan control method, device, controller, and boiler for a heating boiler. The method includes: detecting the real-time speed of the fan corresponding to the current combustion load of the heating boiler; when it is determined that the real-time speed increases and is less than the preset maximum speed of the fan, increasing the fan power according to a mapping relationship and applying compensation power; when it is determined that the real-time speed increases and is greater than or equal to the preset maximum speed of the fan, controlling the fan to operate at the preset maximum speed; detecting the real-time power of the fan; and when it is determined that the real-time power is less than the maximum power, reducing the combustion load of the heating boiler. When an increase in speed is detected, increasing the fan power according to compensation power reduces noise caused by drastic fluctuations in power and speed. Simultaneously, reducing the combustion load ensures smooth smoke exhaust while further avoiding long-term high-power operation of the fan, achieving a balance between noise reduction and energy saving, and improving the user experience.

Description

Technical Field

[0001] This invention relates to the field of combustion equipment technology, and in particular to a fan control method, device, controller, and heating furnace for a heating boiler. Background Technology

[0002] Gas-fired boilers generate heat through gas combustion, which is then used to heat water for indoor heating systems or provide domestic hot water. A flue gas system expels the combustion gases outdoors to ensure combustion safety and indoor air quality. This system typically includes a fan, which performs ventilation and provides the necessary air for combustion. However, in practice, the boiler's flue pipes are prone to blockage due to the accumulation of dust and debris over time, leading to increased exhaust resistance and poor ventilation. Related technologies address this issue by continuously increasing the fan's power to a higher speed to meet the airflow requirements of the boiler. However, excessively rapid fan speed increases noise and energy consumption, negatively impacting the user experience. Summary of the Invention

[0003] The technical problem solved by this invention is to provide a fan control method, device, controller and heating boiler for a heating furnace, which can reduce the operating noise and power consumption of the fan and improve the user experience when there is poor smoke exhaust in the flue.

[0004] The above-mentioned technical problems are solved by the following technical solutions: A method for controlling the fan of a heating boiler, the method comprising: The mapping relationship between the speed range of multiple fans and the compensation power of the fans is preset; The real-time speed of the fan corresponding to the current combustion load of the heating boiler is detected; When it is determined that the real-time speed increases and the real-time speed is less than the preset maximum speed of the fan, the speed range to which the real-time speed belongs is determined, the power of the fan is increased according to the mapping relationship and the compensation power is increased, the fan is controlled to run at the compensated fan power in the current speed range, and the process returns to the step of detecting the real-time speed of the fan corresponding to the current combustion load of the heating boiler. When it is determined that the real-time rotation speed increases and the real-time rotation speed is greater than or equal to the preset maximum rotation speed of the fan, the fan is controlled to run at the preset maximum rotation speed, and the power of the fan corresponding to the real-time rotation speed decreasing to the preset maximum rotation speed of the fan is recorded as the maximum power. Detect the real-time power of the fan; When it is determined that the real-time power is less than the maximum power, the combustion load of the heating boiler is reduced.

[0005] Compared with the prior art, the fan control method for heating boilers described in this invention has the following advantages: This method, through a preset mapping relationship between fan speed range and compensation power, detects the real-time fan speed during boiler operation. If the current real-time speed is greater than the previously detected speed, it indicates that the flue is blocked or the external wind pressure is high, and the boiler's exhaust is obstructed. The method then determines the speed range to which the current real-time speed belongs, increases the fan power according to the compensation power corresponding to the speed range, and controls the fan to operate at the compensated power within the current speed range. In this way, this segmented power control method avoids continuous and rapid increases in fan power, allowing the fan to maintain a relatively constant power operation within each speed range, thereby reducing noise caused by excessively rapid increases in fan speed due to excessively rapid increases in fan power. Meanwhile, when it is determined that the fan is already running at the preset maximum speed, the real-time power of the fan is detected and compared with the maximum power of the fan. When the real-time power is less than the maximum power, it indicates that the current flue blockage is aggravated or the external wind pressure is continuing to increase. By reducing the combustion load, while reducing combustion noise and ensuring that the air volume meets the current combustion load, the burner is further prevented from running at a high load for a long time. Therefore, when there is poor flue exhaust, the control method of the present invention can reduce the operating noise and energy consumption of the fan, achieve a balance between noise reduction and energy saving, and improve the user experience.

[0006] In one embodiment, when it is determined that the real-time rotational speed increases and the real-time rotational speed is less than the preset maximum rotational speed of the fan, determining the rotational speed range to which the real-time rotational speed belongs, and increasing the power of the fan according to the mapping relationship and the compensation power, includes: When it is determined that the real-time rotational speed is greater than the first rotational speed threshold and less than or equal to the second rotational speed threshold, the power of the fan is increased to the first power, wherein the first power is used to characterize the fan power corresponding to the real-time rotational speed being in the rotational speed range formed by the first rotational speed threshold and the second rotational speed threshold before the flue gas exceeds the standard.

[0007] In one embodiment, when it is determined that the real-time rotational speed increases and the real-time rotational speed is less than the preset maximum rotational speed of the fan, determining the rotational speed range to which the real-time rotational speed belongs, and increasing the power of the fan according to the mapping relationship and the compensation power, includes: When it is determined that the real-time rotational speed is greater than the second rotational speed threshold and less than the preset maximum rotational speed of the fan, the power of the fan is increased to the second power, wherein the second power is greater than the first power. The second power is used to characterize the fan power corresponding to the real-time rotational speed being in the rotational speed range formed by the second rotational speed threshold and the preset maximum rotational speed before the flue gas exceeds the standard.

[0008] In one embodiment, reducing the combustion load of the heating boiler includes: When it is determined that the current power of the fan is less than the maximum power and greater than or equal to the preset power threshold, the current combustion load of the heating boiler is controlled to decrease to the first combustion load; Wherein, the first combustion load is less than the rated combustion load of the heating furnace.

[0009] In one embodiment, reducing the combustion load of the heating boiler further includes: When it is determined that the current power of the fan is less than a preset power threshold, the current combustion load of the heating boiler is controlled to decrease to the second combustion load; Wherein, the second combustion load is less than the rated combustion load of the heating boiler, and the second combustion load is less than the first combustion load.

[0010] In one embodiment, after reducing the combustion load of the heating boiler, the method further includes: Detect the current combustion load of the heating boiler; When it is determined that the current combustion load is less than the preset minimum combustion load of the heating boiler, the heating boiler is controlled to stop and a fault prompt is issued.

[0011] A fan control device for a heating boiler includes: The preset module is used to preset the mapping relationship between the speed range of multiple fans and the compensation power of the fans; The speed detection module is used to detect the real-time speed of the fan corresponding to the current combustion load of the heating boiler; The first power enhancement module is used to determine the speed range to which the real-time speed belongs when it is determined that the real-time speed increases and the real-time speed is less than the preset maximum speed of the fan, increase the power of the fan according to the mapping relationship and the compensation power according to the compensation power, control the fan to run at the compensated fan power in the current speed range, and return to execute the step of detecting the real-time speed of the fan corresponding to the current combustion load of the heating boiler. The second power enhancement module is used to control the fan to run at the preset maximum speed when it is determined that the real-time speed increases and the real-time speed is greater than or equal to the preset maximum speed of the fan, and to record the power of the fan at this time as the maximum power. A power detection module is used to detect the real-time power of the fan; The load reduction module is used to reduce the combustion load of the heating boiler when it is determined that the real-time power is less than the maximum power.

[0012] A controller, comprising: The system includes a memory and a processor, which are interconnected. The memory stores computer instructions, and the processor executes these computer instructions to perform the aforementioned fan control method for the heating boiler.

[0013] A heating furnace, wherein the controller of the heating furnace is described above. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic flowchart of a fan control method for a heating furnace according to an embodiment of the present invention; Figure 2 This is a flowchart illustrating another method for controlling the fan of a heating boiler according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the fan control device for a heating furnace according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the controller according to an embodiment of the present invention. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] In the description of this application, it should be understood that 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 indicated technical features. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0018] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0019] According to an embodiment of the present invention, a fan control method for a heating boiler is provided. Figure 1 This is a flowchart of a fan control method for a heating boiler according to an embodiment of the present invention, such as... Figure 1 As shown, the process includes the following steps: Step S101: Preset the mapping relationship between the speed range of multiple fans and the compensation power of the fans.

[0020] This invention is used in heating boilers to adjust the boiler's fan. The fan can be a DC fan or an AC fan. A DC fan adjusts its speed by regulating the current, while an AC fan adjusts its speed by regulating the voltage. The fan's speed from rest to its maximum speed is divided into multiple continuous, non-overlapping speed ranges, and a corresponding power compensation value, i.e., compensation power, is assigned to each range.

[0021] Step S102: Detect the real-time speed of the fan corresponding to the current combustion load of the heating boiler.

[0022] The system collects the real-time speed of the fan under the current combustion load of the heating boiler. Specifically, this can be achieved through real-time data acquisition via sensors. By obtaining the fan's instantaneous operating status parameters, data support is provided for subsequent assessments of conditions such as flue pipe patency and changes in external air pressure. For example, when the flue pipe is blocked, the fan load decreases, and the speed will change accordingly.

[0023] Step S103: When it is determined that the real-time speed increases and the real-time speed is less than the preset maximum speed of the fan, the speed range to which the real-time speed belongs is determined, the power of the fan is increased according to the mapping relationship and the power of the fan is increased by compensation, the fan is controlled to run at the compensated fan power in the current speed range, and the process returns to the step of detecting the real-time speed of the fan corresponding to the current combustion load of the heating boiler.

[0024] After detecting the real-time fan speed, if the real-time speed shows an increasing trend compared to the previously detected speed, the speed range to which the real-time speed belongs is determined. Based on a preset relationship, the compensation power corresponding to that speed range is found, and then the fan power is adjusted using the compensation power corresponding to that speed range. After adjusting the fan power to the compensation power corresponding to that speed range, the fan is controlled to operate at that compensation power. After adjusting the power, the real-time fan speed is continuously detected, as detailed in step S102.

[0025] Step S104: When it is determined that the real-time speed increases and the real-time speed is greater than or equal to the preset maximum speed of the fan, the fan is controlled to run at the preset maximum speed, and the power of the fan corresponding to the real-time speed decreasing to the preset maximum speed of the fan is recorded as the maximum power.

[0026] After detecting the real-time fan speed, if the real-time speed shows an increasing trend relative to the previously detected speed, and the real-time speed is greater than or equal to the fan's preset maximum speed, then the fan speed is controlled to remain at the preset maximum speed. When the fan speed is reduced to the preset maximum speed, the fan power is taken as the maximum power, and the fan is controlled to operate at the maximum power to maintain the smoke exhaust function to the maximum extent and ensure that the air volume meets the current combustion load.

[0027] Step S105: Detect the real-time power of the fan.

[0028] When the fan is running at the preset maximum speed, the real-time power of the fan is detected. If the blockage of the flue pipe worsens or the external wind pressure increases, the fan load decreases, and the real-time power of the fan will decrease.

[0029] Step S106: When it is determined that the real-time power is less than the maximum power, reduce the combustion load of the heating boiler.

[0030] If a real-time power decrease is detected, i.e., less than the maximum power, it indicates that the flue is gradually becoming blocked. In this case, the amount of flue gas that needs to be discharged is reduced by decreasing the combustion load, thereby matching the current limited exhaust capacity.

[0031] The boiler fan control method provided in this invention, through a preset mapping relationship between fan speed range and compensation power, determines the current speed range of the boiler by detecting the real-time fan speed during boiler operation. If the current real-time speed is greater than the previously detected speed, it indicates that the flue is blocked or the external wind pressure is high, and the boiler's exhaust is obstructed. The method then determines the speed range to which the current real-time speed belongs, increases the fan power according to the compensation power corresponding to the speed range, and controls the fan to operate at the compensated fan power within the current speed range. In this way, this segmented power control method can avoid continuous and rapid increases in fan power, allowing the fan to maintain a relatively constant power operation within each speed range, thereby reducing the noise caused by excessively rapid increases in fan speed due to excessively rapid increases in fan power. Meanwhile, when it is determined that the fan is already running at the preset maximum speed, the real-time power of the fan is detected and compared with the maximum power of the fan. When the real-time power is less than the maximum power, it indicates that the current smoke pipe blockage is aggravated or the external wind pressure is continuing to increase. By reducing the combustion load, while reducing combustion noise and ensuring that the air volume meets the current combustion load, the burner is further prevented from running at high power for a long time. Therefore, when there is poor smoke exhaust in the smoke pipe, the control method of the present invention can reduce the operating noise and power consumption of the fan, achieve a balance between noise reduction and energy saving, and improve the user experience.

[0032] In some optional implementations, step S103 includes: when it is determined that the real-time rotational speed is greater than a first rotational speed threshold and less than or equal to a second rotational speed threshold, increasing the power of the fan to a first power.

[0033] The first power is used to characterize the fan power before the flue gas exceeds the standard when the real-time speed is within the speed range formed by the first speed threshold and the second speed threshold.

[0034] The first and second speed thresholds are pre-determined starting speeds for compensation. If the real-time fan speed is greater than the first speed threshold but less than the second speed threshold, power compensation is applied, increasing the current DC fan power to the first power corresponding to the range formed by the first and second speed thresholds. The first power is the fan power before the flue gas exceeded the standard. Flue gas exceeding the standard refers to an excessive CO content in the flue gas.

[0035] If the real-time speed of the fan is less than the first speed threshold, the fan will be controlled to maintain the current speed.

[0036] In some optional implementations, step S103 includes: when it is determined that the real-time rotational speed is greater than the second rotational speed threshold and less than the preset maximum rotational speed of the fan, increasing the power of the fan to the second power.

[0037] The second power is greater than the first power. The second power characterizes the speed range defined by the second speed threshold and the preset maximum speed. If the real-time fan speed is greater than the second speed threshold but less than the preset maximum speed before the flue gas exceeds the standard, the power is compensated, increasing the current fan power to the second power. The second power corresponds to the fan speed range defined by the second speed threshold and the preset maximum speed. The second power is greater than the first power.

[0038] It should be noted that the speed range formed by the first speed threshold and the second speed threshold can be set to multiple speed ranges, and correspondingly, multiple speed ranges correspond to different first power; similarly, the fan speed range formed by the second speed threshold and the preset maximum speed can be set to multiple speed ranges, and correspondingly, multiple speed ranges correspond to different second power.

[0039] In some optional implementations, step S106 above includes: When it is determined that the current power of the fan is less than the maximum power but greater than or equal to the preset power threshold, the current combustion load of the heating boiler is controlled to decrease to the first combustion load; The first combustion load is less than the rated combustion load of the heating boiler.

[0040] If the current power of the fan is detected to be greater than or equal to the preset power threshold, but less than the maximum power, it indicates that the current flue blockage is worsening or the external wind pressure is continuing to increase. In this case, the combustion load is controlled to decrease to the first combustion load. By controlling the decrease in combustion load, the speed is kept within an acceptable noise range. The reduced combustion load (i.e., partial combustion of the rated heat load) allows for sufficient margin in the flue gas CO content to achieve higher wind resistance. The first combustion load is less than the rated combustion load of the heating boiler. In some optional implementations, step S106 above further includes: When it is determined that the current power of the fan is less than the preset power threshold, the current combustion load of the heating boiler is reduced to the second combustion load.

[0041] The second combustion load is less than the rated combustion load of the heating boiler, and the second combustion load is less than the first combustion load.

[0042] If the current power of the fan is detected to be less than the preset power threshold, indicating that the flue blockage is worsening or the external wind pressure is continuing to increase, the combustion load will be reduced to the second combustion load. Specifically, the combustion load will be reduced from the first combustion load to the second combustion load, where the second combustion load is less than the first combustion load. Both the first and second combustion loads are set based on the rated combustion load of the boiler, for example, the first combustion load accounts for 80% of the rated combustion load, and the second combustion load accounts for 60% of the rated combustion load. The specific settings can be adjusted according to the actual application.

[0043] In some alternative implementations, after step S106 above, such as Figure 2 As shown, the method also includes: Step S201: Detect the current combustion load of the heating boiler; Step S202: When it is determined that the current combustion load is less than the preset minimum combustion load of the heating boiler, the heating boiler is controlled to stop and a fault prompt is issued.

[0044] The boiler's load detection module collects the load value corresponding to the heat generated by combustion per unit time in real time, i.e., the current combustion load. The third combustion load is a reasonable value given based on a portion of the load range during long-term operation of the boiler in heating mode; the third combustion load is less than the second combustion load. If the current combustion load is detected to be less than the third combustion load, the boiler's protection program is activated to automatically stop operation and issue a fault warning.

[0045] According to an embodiment of the present invention, a fan control device for a heating boiler is provided. Figure 3 This is a schematic diagram of a fan control device for a heating boiler according to an embodiment of the present invention, as shown below. Figure 3 As shown, the device includes: The preset module is used to preset the mapping relationship between the speed range of multiple fans and the compensation power of the fans; The speed detection module is used to detect the real-time speed of the fan corresponding to the current combustion load of the heating boiler; The first power enhancement module is used to determine the speed range to which the real-time speed belongs when it is determined that the real-time speed increases and the real-time speed is less than the preset maximum speed of the fan, increase the power of the fan according to the mapping relationship and the compensation power according to the compensation power, control the fan to run at the compensated fan power in the current speed range, and return to execute the step of detecting the real-time speed of the fan corresponding to the current combustion load of the heating boiler. The second power enhancement module is used to control the fan to run at the preset maximum speed when it is determined that the real-time speed increases and the real-time speed is greater than or equal to the preset maximum speed of the fan, and to record the power of the fan at this time as the maximum power. A power detection module is used to detect the real-time power of the fan; The load reduction module is used to reduce the combustion load of the heating boiler when it is determined that the real-time power is less than the maximum power.

[0046] In some alternative implementations, the first power boosting module includes: The first boosting unit is used to boost the power of the fan to a first power when it is determined that the real-time rotational speed is greater than a first rotational speed threshold and less than or equal to a second rotational speed threshold. The first power is used to characterize the fan power corresponding to the real-time rotational speed being in the rotational speed range formed by the first rotational speed threshold and the second rotational speed threshold before the flue gas exceeds the standard.

[0047] In some alternative implementations, the second power boosting module includes: The second boosting unit is used to boost the power of the fan to a second power when it is determined that the real-time rotational speed is greater than the second rotational speed threshold and less than the preset maximum rotational speed of the fan. The second power is greater than the first power. The second power is used to characterize the fan power corresponding to the time before the flue gas exceeds the standard when the real-time rotational speed is in the rotational speed range formed by the second rotational speed threshold and the preset maximum rotational speed.

[0048] In some alternative implementations, the load reduction module includes: The first load reduction unit is used to control the current combustion load of the heating boiler to decrease to the first combustion load when it is determined that the current power of the fan is less than the maximum power and greater than or equal to a preset power threshold. Wherein, the first combustion load is less than the rated combustion load of the heating furnace.

[0049] In some alternative implementations, the load reduction module further includes: The second load reduction unit is used to control the current combustion load of the heating boiler to decrease to the second combustion load when it is determined that the current power of the fan is less than a preset power threshold. Wherein, the second combustion load is less than the rated combustion load of the heating boiler, and the second combustion load is less than the first combustion load.

[0050] In some alternative embodiments, the apparatus further includes: The fault indication module is used to detect the current combustion load of the heating boiler; when it is determined that the current combustion load is less than the preset minimum combustion load of the heating boiler, the module controls the heating boiler to stop and issues a fault indication.

[0051] Please see Figure 4 , Figure 4 This is a schematic diagram of the structure of a controller provided in an optional embodiment of the present invention, such as... Figure 4As shown, the controller includes one or more processors 10, memory 20, and interfaces for connecting the components, including high-speed interfaces and low-speed interfaces. The components communicate with each other via different buses and can be mounted on a common motherboard or otherwise as required. The processors can process instructions executed within the controller, including instructions stored in or on memory to display graphical information of a GUI on external input / output devices (such as display devices coupled to the interfaces). In some alternative implementations, multiple processors and / or multiple buses can be used with multiple memories and multiple memory modules, if desired. Similarly, multiple controllers can be connected, each providing some of the necessary operations (e.g., as a server array, a group of blade servers, or a multiprocessor system). Figure 4 Take a processor 10 as an example.

[0052] Processor 10 may be a central processing unit, a network processor, or a combination thereof. Processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The programmable logic device may be a complex programmable logic device (CAMP), a field-programmable gate array (FPGA), a general-purpose array logic (GDA), or any combination thereof.

[0053] The memory 20 stores instructions executable by at least one processor 10 to cause the at least one processor 10 to perform the method shown in the above embodiments.

[0054] The memory 20 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the controller. Furthermore, the memory 20 may include high-speed random access memory and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some alternative embodiments, the memory 20 may optionally include memory remotely located relative to the processor 10, and these remote memories may be connected to the controller via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0055] The memory 20 may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, hard disk or solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0056] The controller also includes a communication interface 30 for communicating with other devices or communication networks.

[0057] An optional embodiment of the present invention provides a heating furnace, including the controller described above.

[0058] This invention also provides a computer-readable storage medium. The methods described above according to embodiments of the invention can be implemented in hardware or firmware, or implemented as computer code that can be recorded on a storage medium, or implemented as computer code downloaded via a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and then stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that computers, processors, microprocessor controllers, or programmable hardware include storage components capable of storing or receiving software or computer code, which, when accessed and executed by the computer, processor, or hardware, implements the methods shown in the above embodiments.

[0059] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0060] The specific embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A method for controlling the fan of a heating boiler, characterized in that, The method includes: The mapping relationship between the speed range of multiple fans and the compensation power of the fans is preset; The real-time speed of the fan corresponding to the current combustion load of the heating boiler is detected; When it is determined that the real-time speed increases and the real-time speed is less than the preset maximum speed of the fan, the speed range to which the real-time speed belongs is determined, the power of the fan is increased according to the mapping relationship and the compensation power is increased, the fan is controlled to run at the compensated fan power in the current speed range, and the process returns to the step of detecting the real-time speed of the fan corresponding to the current combustion load of the heating boiler. When it is determined that the real-time rotation speed increases and the real-time rotation speed is greater than or equal to the preset maximum rotation speed of the fan, the fan is controlled to run at the preset maximum rotation speed, and the power of the fan corresponding to the real-time rotation speed decreasing to the preset maximum rotation speed of the fan is recorded as the maximum power. Detect the real-time power of the fan; When it is determined that the real-time power is less than the maximum power, the combustion load of the heating boiler is reduced; When it is determined that the real-time rotational speed increases and the real-time rotational speed is less than the preset maximum rotational speed of the fan, the rotational speed range to which the real-time rotational speed belongs is determined, and the power of the fan is increased according to the mapping relationship and the compensation power, including: When it is determined that the real-time rotational speed is greater than the first rotational speed threshold and less than or equal to the second rotational speed threshold, the power of the fan is increased to the first power, wherein the first power is used to characterize the fan power corresponding to the real-time rotational speed being in the rotational speed range formed by the first rotational speed threshold and the second rotational speed threshold before the flue gas exceeds the standard. When it is determined that the real-time rotational speed is greater than the second rotational speed threshold and less than the preset maximum rotational speed of the fan, the power of the fan is increased to the second power, wherein the second power is greater than the first power. The second power is used to characterize the fan power corresponding to the real-time rotational speed being in the rotational speed range formed by the second rotational speed threshold and the preset maximum rotational speed before the flue gas exceeds the standard.

2. The fan control method for a heating boiler according to claim 1, characterized in that, The reduction of the combustion load of the heating boiler includes: When it is determined that the current power of the fan is less than the maximum power and greater than or equal to the preset power threshold, the current combustion load of the heating boiler is controlled to decrease to the first combustion load; Wherein, the first combustion load is less than the rated combustion load of the heating furnace.

3. The fan control method for a heating boiler according to claim 2, characterized in that, The reduction of the combustion load of the heating boiler also includes: When it is determined that the current power of the fan is less than a preset power threshold, the current combustion load of the heating boiler is controlled to decrease to the second combustion load; Wherein, the second combustion load is less than the rated combustion load of the heating boiler, and the second combustion load is less than the first combustion load.

4. The fan control method for a heating boiler according to claim 1, characterized in that, After reducing the combustion load of the heating boiler, the method further includes: Detect the current combustion load of the heating boiler; When it is determined that the current combustion load is less than the preset minimum combustion load of the heating boiler, the heating boiler is controlled to stop and a fault prompt is issued.

5. A fan control device for a heating boiler, characterized in that, A fan control method for performing any one of claims 1 to 4 of a heating boiler, the apparatus comprising: The preset module is used to preset the mapping relationship between the speed range of multiple fans and the compensation power of the fans; The speed detection module is used to detect the real-time speed of the fan corresponding to the current combustion load of the heating boiler; The first power enhancement module is used to determine the speed range to which the real-time speed belongs when it is determined that the real-time speed increases and the real-time speed is less than the preset maximum speed of the fan, increase the power of the fan according to the mapping relationship and the compensation power according to the compensation power, control the fan to run at the compensated fan power in the current speed range, and return to execute the step of detecting the real-time speed of the fan corresponding to the current combustion load of the heating boiler. The second power enhancement module is used to control the fan to run at the preset maximum speed when it is determined that the real-time speed increases and the real-time speed is greater than or equal to the preset maximum speed of the fan, and to record the power of the fan when the real-time speed decreases to the preset maximum speed of the fan as the maximum power. A power detection module is used to detect the real-time power of the fan; The load reduction module is used to reduce the combustion load of the heating boiler when it is determined that the real-time power is less than the maximum power.

6. The apparatus according to claim 5, characterized in that, The device further includes: The fault indication module is used to detect the current combustion load of the heating boiler; when it is determined that the current combustion load is less than the preset minimum combustion load of the heating boiler, the module controls the heating boiler to stop and issues a fault indication.

7. A controller, characterized in that, include: The system includes a memory and a processor, which are communicatively connected to each other. The memory stores computer instructions, and the processor executes the computer instructions to perform the fan control method of the heating boiler according to any one of claims 1 to 4.

8. A heating stove, characterized in that, The heating furnace includes the controller as described in claim 7.

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