Ignition control method and device of wall-hanging stove, controller and wall-hanging stove

Abstract

The invention relates to the technical field of wall-hanging stoves, and discloses an ignition control method and device of a wall-hanging stove, a controller and the wall-hanging stove.The ignition control method comprises the steps that when ignition of the wall-hanging stove fails, the valve opening current of a gas proportional valve of the wall-hanging stove is detected, and when the valve opening current is smaller than a preset current threshold value, the valve opening current is increased, and the wall-hanging stove is controlled to execute ignition operation again; when the valve opening current is larger than or equal to the preset current threshold value, the fan rotating speed of the wall-hanging stove is detected; and when the rotating speed of the fan is larger than the preset rotating speed threshold value, the rotating speed of the fan is adjusted to the preset rotating speed threshold value, and the wall-hanging stove is controlled to execute re-ignition operation. According to the method, the valve opening current is firstly adjusted when the execution of the ignition operation fails, so that the ignition success rate of the wall-hanging stove is increased by increasing the air inlet pressure, and the rotating speed of the fan is adjusted when the valve opening current is greater than the preset current threshold value, so that the ignition failure caused by flame separation and fire transfer failure is avoided by reducing the air inlet amount of cold air; the ignition success rate of the wall-hanging stove is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wall-mounted boilers, and in particular to an ignition control method, device, controller and wall-mounted boiler. Background Art

[0002] Wall-mounted boilers are commonly used for heating and water supply. To ensure a good user experience, it's crucial to ensure a consistent and stable ignition success rate. Related technologies typically increase the ignition power gradually when ignition fails to ignite, improving the boiler's success rate. However, this success rate is affected by a variety of factors, such as low gas pressure and low ambient temperature leading to low intake air temperature. Simply adjusting the ignition power has limited impact on improving the success rate. Summary of the Invention

[0003] The first technical problem solved by the present invention is to provide an ignition control method for a wall-mounted boiler, which effectively solves the problem that the related technology has limited effect on improving the ignition success rate of the wall-mounted boiler.

[0004] The second technical problem solved by the present invention is to provide an ignition control device for a wall-mounted boiler, which effectively solves the problem that the related art has limited effect on improving the success rate of ignition of the wall-mounted boiler.

[0005] The third technical problem solved by the present invention is to provide a controller for a wall-mounted boiler, which effectively solves the problem that the related technology has limited effect on improving the ignition success rate of the wall-mounted boiler.

[0006] The fourth technical problem solved by the present invention is to provide a wall-mounted boiler, which effectively solves the problem that the related technology has limited effect on improving the ignition success rate of the wall-mounted boiler.

[0007] The first technical problem mentioned above is solved by the following technical solution:

[0008] A method for controlling ignition of a wall-mounted boiler, the method comprising:

[0009] In response to a start-up instruction of the wall-mounted boiler, controlling the wall-mounted boiler to perform an ignition operation;

[0010] Determine whether the ignition of the wall-mounted boiler is successful;

[0011] When the boiler fails to ignite, the valve opening current of the boiler's gas proportional valve is detected. When the valve opening current is less than a preset current threshold, the valve opening current is increased and the boiler is controlled to perform a re-ignition operation, and then the operation of determining whether the boiler ignition is successful is returned. The preset current threshold is the valve opening current value when the boiler ignites without explosion.

[0012] When the valve opening current is greater than or equal to the preset current threshold, the fan speed of the wall-mounted boiler is detected;

[0013] When the fan speed is greater than the preset speed threshold, the fan speed is adjusted to the preset speed threshold, and the wall-mounted boiler is controlled to perform the re-ignition operation, and return to execute the operation of determining whether the ignition of the wall-mounted boiler is successful; wherein the preset speed threshold is the value of the fan speed of the wall-mounted boiler when no explosion occurs during ignition.

[0014] Compared with the background technology, the ignition control method of the wall-mounted boiler described in the present invention has the following beneficial effects: when the ignition operation fails, the valve opening current is first adjusted; when the valve opening current is less than a preset current threshold, the valve opening current is increased to increase the opening of the gas proportional valve, thereby improving the ignition success rate of the wall-mounted boiler by increasing the intake pressure; further, when the valve opening current is greater than or equal to the preset current threshold, the fan speed is adjusted; by reducing the fan speed, the air flow is reduced, thereby reducing the amount of cold air intake to avoid ignition failure caused by flame separation and flame transfer failure, thereby improving the ignition success rate of the wall-mounted boiler; thus, the ignition operation of the wall-mounted boiler is controlled by combining the adjustment of the valve opening current and the fan speed, thereby improving the ignition success rate from two aspects of increasing the intake pressure and reducing the cold air intake, which can greatly improve the ignition success rate of the wall-mounted boiler.

[0015] In one embodiment, when the valve opening current is less than or equal to a preset current threshold, increasing the valve opening current and controlling the wall-mounted boiler to perform a re-ignition operation includes:

[0016] When the valve opening current is less than or equal to the preset current threshold, the valve opening current is increased to the preset current threshold and the wall-mounted boiler is controlled to perform a re-ignition operation.

[0017] In one embodiment, after detecting the fan speed of the wall-mounted boiler, the method further includes:

[0018] When the fan speed is less than or equal to the preset speed threshold, a reminder message is issued to indicate that there is an ignition fault in the wall-mounted boiler.

[0019] In one embodiment, the preset current threshold is the maximum valve opening current of the wall-mounted boiler, and the maximum valve opening current is used to represent the maximum value of the valve opening current when the wall-mounted boiler is ignited without explosion;

[0020] The preset speed threshold is the minimum fan speed of the wall-mounted boiler. The minimum fan speed is used to limit the minimum value of the fan speed when the wall-mounted boiler is ignited without explosion.

[0021] In one embodiment, after controlling the wall-mounted boiler to perform the ignition operation, the method further includes:

[0022] Detecting the ion current of the feedback pin of the wall-mounted boiler, where the feedback pin is provided on the burner of the wall-mounted boiler;

[0023] When the ion current is detected, it is determined that the wall-mounted boiler is successfully ignited.

[0024] In one embodiment, the start instruction carries a target temperature;

[0025] After determining that the wall-mounted boiler is successfully ignited, the method further includes:

[0026] Based on the target temperature, the boiler load is adjusted.

[0027] In one embodiment, after controlling the wall-mounted boiler to perform the ignition operation, the method further includes:

[0028] If no ion current is detected within the set time, it is determined that the ignition of the wall-mounted boiler has failed.

[0029] The second technical problem mentioned above is solved by the following technical solution:

[0030] An ignition control device for a wall-mounted boiler, comprising:

[0031] An ignition module, configured to control the boiler to perform an ignition operation in response to a start-up instruction of the boiler;

[0032] Ignition operation determination module, used to determine whether the ignition of the wall-mounted boiler is successful;

[0033] a current detection module, configured to detect the valve opening current of the gas proportional valve of the wall-mounted boiler when the ignition of the wall-mounted boiler fails, and to increase the valve opening current and control the wall-mounted boiler to perform a re-ignition operation when the valve opening current is less than a preset current threshold;

[0034] The speed detection module is used to detect the fan speed of the wall-mounted boiler when the valve opening current is greater than or equal to the preset current threshold;

[0035] The speed regulating module is used to regulate the fan speed to the preset speed threshold when the fan speed is greater than the preset speed threshold, and control the wall-mounted boiler to perform a re-ignition operation.

[0036] The third technical problem mentioned above is solved by the following technical solution:

[0037] A controller for a wall-mounted boiler, comprising:

[0038] The memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the computer instructions to implement the ignition control method of the wall-mounted boiler in any of the above embodiments.

[0039] The fourth technical problem mentioned above is solved by the following technical solution:

[0040] A wall-mounted boiler comprises: the controller of the wall-mounted boiler described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] 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.

[0042] Figure 1 This is a structural diagram of a combustion system in a wall-mounted boiler according to an embodiment of the present invention;

[0043] Figure 2 This is a flow chart of an ignition control method for a wall-mounted boiler according to an embodiment of the present invention;

[0044] Figure 3 This is a flow chart of an ignition control method for a wall-mounted boiler according to an embodiment of the present invention;

[0045] Figure 4 This is a structural schematic diagram of an ignition control device for a wall-mounted boiler according to an embodiment of the present invention;

[0046] Figure 5 It is a structural schematic diagram of a controller of a wall-mounted boiler according to an embodiment of the present invention.

[0047] Description of reference numerals:

[0048] 1. Burner; 2. Feedback needle; 3. Ignition needle; 4. Ignition probe. DETAILED DESCRIPTION

[0049] 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.

[0050] 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.

[0051] Wall-mounted boilers are commonly used heating and water supply equipment. To ensure a good user experience, it's crucial to ensure a high ignition success rate and stability. Related technologies typically increase the ignition power gradually when ignition fails to occur to improve the boiler's ignition success rate. However, this success rate is affected by multiple factors. Simply adjusting the ignition power alone cannot address ignition failures caused by other factors, such as low gas pressure, and thus has limited impact on improving the ignition success rate.

[0052] Based on this, the present invention provides an ignition control method for a wall-mounted boiler, comprising responding to a start-up instruction of the wall-mounted boiler, controlling the wall-mounted boiler to perform an ignition operation; judging whether the ignition of the wall-mounted boiler is successful, and when an ignition failure is detected, increasing the valve opening current and controlling the wall-mounted boiler to perform a re-ignition operation, and returning to execute the operation of judging whether the ignition of the wall-mounted boiler is successful; when the valve opening current is greater than a preset current threshold, detecting the fan speed of the wall-mounted boiler; when the fan speed is greater than a preset speed threshold, adjusting the fan speed to the preset speed threshold, and controlling the wall-mounted boiler to perform a re-ignition operation. When the ignition operation fails, the valve opening current is first adjusted. When the valve opening current is less than the preset current threshold, the valve opening current is increased to increase the opening of the gas proportional valve, thereby increasing the ignition success rate of the wall-mounted boiler by increasing the air intake pressure. When the valve opening current is greater than the preset current threshold, the fan speed is adjusted. By reducing the fan speed, the air flow is reduced, and the ignition failure caused by flame separation and flame transmission failure is avoided by reducing the cold air intake volume, thereby improving the ignition success rate of the wall-mounted boiler. Therefore, the ignition operation of the wall-mounted boiler is controlled by combining the adjustment of the valve opening current and the fan speed, and the ignition success rate is improved from two aspects of increasing the air intake pressure and reducing the cold air intake volume, which can greatly improve the ignition success rate of the wall-mounted boiler.

[0053] The following combination Figures 1 to 5 , describing embodiments of the present invention.

[0054] According to an embodiment of the present invention, on the one hand, a wall-mounted boiler is provided, which includes at least a combustion system and a controller, wherein the controller is used to execute the ignition control method of the wall-mounted boiler shown in the following embodiment to control the ignition operation of the combustion system, thereby achieving the effect of improving the ignition success rate of the wall-mounted boiler. Figure 1 This is a structural diagram of a combustion system in a wall-mounted boiler according to an embodiment of the present invention. Figure 1As shown, the combustion system includes: a burner 1, a feedback pin 2, an ignition pin 3, and an ignition probe 4; wherein, the feedback pin 2, ignition pin 3, and ignition probe 4 are all mounted on the burner 1. When the wall-mounted boiler is ignited, the ignition pin 3 discharges high voltage and breaks down, generating an arc between it and the air between it and the ignition probe 4. This arc ignites the gas-air mixture ejected from the burner 1 and transmits the flame. The flame burns the feedback pin 2, generating an ion current. If the controller detects this ion current and combustion is maintained, ignition is successful; otherwise, ignition fails.

[0055] According to an embodiment of the present invention, on the other hand, a method for controlling the ignition of a wall-mounted boiler is provided, which can be applied to the controller of the wall-mounted boiler shown above. Figure 2 FIG. 1 is a flow chart of an ignition control method for a wall-mounted boiler according to an embodiment of the present invention. Figure 2 As shown, the method may include the following steps:

[0056] Step S201: In response to a start-up instruction of the wall-mounted boiler, the wall-mounted boiler is controlled to perform an ignition operation.

[0057] In the embodiment of the present invention, when the wall-mounted boiler is started, a start-up instruction of the wall-mounted boiler is generated. At this time, the controller responds to the start-up instruction of the wall-mounted boiler and controls the wall-mounted boiler to perform an ignition operation. Figure 1 The combustion system of the wall-mounted boiler shown in FIG. 1 performs combustion to generate flames.

[0058] Step S202, determining whether the ignition of the wall-mounted boiler is successful.

[0059] Step S203, when it is detected that the ignition failure of the wall-mounted boiler is detected, the valve opening current of the gas proportional valve of the wall-mounted boiler is detected. When the valve opening current is less than the preset current threshold, the valve opening current is increased and the wall-mounted boiler is controlled to perform the re-ignition operation, and the operation of determining whether the ignition of the wall-mounted boiler is successful is returned to be executed.

[0060] In an embodiment of the present invention, when it is detected that the ignition failure of the wall-mounted boiler is detected, the valve opening current of the gas proportional valve of the wall-mounted boiler is detected to be less than a preset current threshold, and the valve opening current is increased to increase the opening of the gas proportional valve, thereby increasing the intake pressure and controlling the wall-mounted boiler to perform a re-ignition operation, wherein the preset current threshold is the value of the valve opening current of the wall-mounted boiler when no explosion occurs during ignition.

[0061] In one embodiment, the valve opening current can be detected in real time, and the valve opening current can be obtained when the ignition failure of the wall-mounted boiler is detected, so as to adjust the air intake pressure of the combustion system of the wall-mounted boiler based on the adjustment of the valve opening current, and thereby control the wall-mounted boiler to perform the re-ignition operation.

[0062] Step S204: When the valve opening current is greater than or equal to the preset current threshold, the fan speed of the wall-mounted boiler is detected.

[0063] In this embodiment of the present invention, the valve opening current is compared with its corresponding preset current threshold to determine the specific adjustment operation. If the valve opening current is greater than the preset current threshold, it indicates that the valve opening current can no longer be adjusted. In this case, the fan speed of the fan is adjusted. The fan speed of the wall-mounted boiler is detected and the cold air intake of the combustion system of the wall-mounted boiler is adjusted based on the fan speed.

[0064] In one embodiment, the fan speed can be detected in real time, and the fan speed can be obtained when the valve opening current is greater than a preset current threshold, so as to adjust the cold air intake of the combustion system of the wall-mounted boiler based on the fan speed.

[0065] In one embodiment, when the valve opening current is less than a preset current threshold, the boiler is controlled to perform a re-ignition operation and adjust the valve opening current to the preset current threshold. Specifically, if the valve opening current is less than or equal to the preset current threshold, it indicates that there is still room for adjustment of the valve opening current. Therefore, the boiler is controlled to perform a re-ignition operation and adjust the valve opening current to the preset current threshold.

[0066] The control unit controls the wall-mounted boiler to perform the ignition operation again, and gradually increases the valve opening current within the ignition time corresponding to the ignition operation until the preset current threshold is reached, or detects that the ignition operation is successfully performed and the wall-mounted boiler is successfully ignited and started, or detects that the ignition operation fails, and stops adjusting the valve opening current. If the wall-mounted boiler still fails to ignite successfully when the valve opening current increases to the preset current threshold within the ignition time corresponding to the ignition operation, or detects that the ignition failure occurs when the ignition time corresponding to the ignition operation is reached, then the above-mentioned step S204 is executed to adjust the cold air intake of the combustion system of the wall-mounted boiler based on the fan speed.

[0067] Step S205, when the fan speed is greater than the preset speed threshold, adjust the fan speed to the preset speed threshold, control the wall-mounted boiler to perform the re-ignition operation, and return to the operation of determining whether the ignition of the wall-mounted boiler is successful.

[0068] In an embodiment of the present invention, the fan speed is compared with its corresponding preset speed threshold to determine a specific adjustment operation. If the fan speed is greater than the preset speed threshold, the fan speed adjustment operation is performed. Specifically, when the wall-mounted boiler performs an ignition operation again, the fan speed is gradually reduced within the ignition time corresponding to the previous ignition operation until the fan speed is less than or equal to the preset speed threshold. Alternatively, the fan speed adjustment is stopped upon detecting that the ignition operation is successful and the wall-mounted boiler is successfully ignited and started, or upon detecting that the ignition operation fails and the wall-mounted boiler has an ignition fault. The preset speed threshold is the value of the fan speed when the wall-mounted boiler is ignited without explosion.

[0069] Among them, since in an ignition operation of a wall-mounted boiler, the fan needs to be started for pre-cleaning before the combustion equipment is ignited, the fan is started for pre-cleaning when the wall-mounted boiler performs the ignition operation. After the pre-cleaning is completed, the fan speed is adjusted once, that is, the fan speed is reduced, and the wall-mounted boiler is controlled to perform the ignition operation and the combustion system to ignite and burn. At the same time, within the ignition time corresponding to an ignition operation, the fan speed is gradually reduced until the fan speed is less than or equal to the preset speed threshold, or, it is detected that the ignition is successful and the wall-mounted boiler is successfully ignited and started, or it is detected that the ignition fails and there is an ignition failure in the wall-mounted boiler, and the adjustment of the fan speed is stopped.

[0070] In one embodiment, after the fan speed of the wall-mounted boiler is detected in the above step S204, and after the fan speed is adjusted in the above step S205, there is still a situation where the fan speed is less than or equal to the preset speed threshold. Since the ignition control of the wall-mounted boiler is performed by first adjusting the valve opening current and then adjusting the fan speed, when the fan speed is less than or equal to the preset speed threshold, the execution of the ignition operation of the wall-mounted boiler is still detected, indicating that there is an ignition fault in the wall-mounted boiler, and successful ignition cannot be achieved by only adjusting the combustion-related working parameters. Therefore, when the fan speed is less than or equal to the preset speed threshold, a reminder message is issued to indicate that there is an ignition fault in the wall-mounted boiler.

[0071] In one embodiment, the ignition of the wall-mounted boiler can also be controlled by adjusting the fan speed first and then adjusting the valve opening current; accordingly, Figure 3 FIG. 1 is a flow chart of an ignition control method for a wall-mounted boiler according to an embodiment of the present invention. Figure 3 As shown, the method may include the following steps:

[0072] Step S301: In response to the start-up instruction of the wall-mounted boiler, the wall-mounted boiler is controlled to perform an ignition operation. Figure 2 Step S201 in the illustrated embodiment will not be described in detail here.

[0073] Step S302: determine whether the ignition of the wall-mounted boiler is successful.

[0074] Step S303, when it is detected that the ignition failure of the wall-mounted boiler is detected, the fan speed of the wall-mounted boiler is detected. When the fan speed is greater than the preset speed threshold, the fan speed is reduced and the wall-mounted boiler is controlled to perform the ignition operation again, and the operation of determining whether the ignition of the wall-mounted boiler is successful is returned to be executed.

[0075] In an embodiment of the present invention, when it is detected that an ignition operation is to be executed, the fan speed of the wall-mounted boiler is detected, and based on the adjustment of the fan speed, the cold air intake volume of the combustion system of the wall-mounted boiler is adjusted, and based on this, the wall-mounted boiler is controlled to perform the ignition operation again.

[0076] In one embodiment, the fan speed can be detected in real time, and the fan speed is obtained when the ignition operation is detected, so as to adjust the cold air intake of the combustion system of the wall-mounted boiler based on the fan speed.

[0077] Step S304: When the fan speed is less than or equal to the preset speed threshold, the valve opening current of the gas proportional valve of the wall-mounted boiler is detected.

[0078] In this embodiment of the present invention, the fan speed is compared with its corresponding preset speed threshold to determine the specific adjustment operation. If the fan speed is less than or equal to the preset speed threshold, it indicates that the fan speed can no longer be adjusted. At this time, the valve opening current of the gas proportional valve is adjusted. The valve opening current of the gas proportional valve of the wall-mounted boiler is detected and the intake pressure of the combustion system of the wall-mounted boiler is adjusted based on the valve opening current.

[0079] In one embodiment, the valve opening current can be detected in real time, and the valve opening current can be obtained when the fan speed is less than or equal to a preset speed threshold, so as to adjust the air intake pressure of the combustion system of the wall-mounted boiler based on the valve opening current.

[0080] In one embodiment, the fan speed is compared with a corresponding preset speed threshold to determine a specific adjustment operation. If the fan speed is greater than the preset speed threshold, the fan speed adjustment operation is performed. Specifically, when the wall-mounted boiler performs an ignition operation again, the fan speed is gradually reduced within the ignition time corresponding to the previous ignition operation until the fan speed is less than or equal to the preset speed threshold, or when it is detected that the ignition operation is successfully executed and the wall-mounted boiler is successfully ignited and started, or when it is detected that the ignition operation fails, the fan speed adjustment is stopped. Taking into account that the fan needs to be started for pre-cleaning before the combustion equipment is ignited, the fan is started for pre-cleaning when the wall-mounted boiler performs the ignition operation. After the pre-cleaning is completed, the fan speed is adjusted once, that is, the fan speed is reduced, and the wall-mounted boiler is controlled to perform the ignition operation and the combustion system to ignite and burn. At the same time, within the ignition time corresponding to an ignition operation, the fan speed is gradually reduced until the fan speed is less than or equal to the preset speed threshold, or, if it is detected that the ignition operation is successfully performed and the wall-mounted boiler is successfully ignited and started, or if it is detected that the ignition operation fails, the above step S304 is executed to adjust the air intake pressure of the combustion system of the wall-mounted boiler based on the valve opening current.

[0081] Step S305, when the valve opening current is less than or equal to the preset current threshold, the wall-mounted boiler is controlled to perform a re-ignition operation, and the valve opening current is adjusted to the preset current threshold, and the operation of determining whether the ignition of the wall-mounted boiler is successful is returned to.

[0082] In an embodiment of the present invention, the valve opening current is compared with its corresponding preset current threshold to determine a specific adjustment operation. When the valve opening current is less than or equal to the preset current threshold, the adjustment operation of the valve opening current is performed; specifically, when the wall-mounted boiler is controlled to perform the ignition operation again, the valve opening current is gradually increased within the ignition time corresponding to one ignition operation until the preset current threshold is reached, or, if it is detected that the ignition operation is successfully performed and the wall-mounted boiler is successfully ignited and started, or if it is detected that the ignition operation fails to be performed, the adjustment of the valve opening current is stopped. Among them, within the ignition time corresponding to one ignition operation, if the valve opening current increases to the preset current threshold and the wall-mounted boiler still fails to ignite successfully, or, if it is detected that the ignition operation fails to be performed and there is an ignition fault in the wall-mounted boiler when the ignition time corresponding to one ignition operation is reached, the adjustment of the valve opening current is stopped.

[0083] In the above embodiment, the preset current threshold is the maximum valve-opening current of the boiler, which represents the maximum value of the valve-opening current when the boiler is ignited without deflagration. When the valve-opening current exceeds the preset current threshold, the intake pressure is excessive, and there is a risk of deflagration when the boiler is ignited. The preset speed threshold is the boiler's minimum fan speed, which limits the minimum fan speed to which the boiler can reach when ignited without deflagration. When the fan speed is less than or equal to the minimum fan speed, the cold air intake is insufficient, and there is a risk of deflagration when the boiler is ignited.

[0084] In one embodiment, although the ignition success rate of the wall-mounted boiler is improved by combining the valve opening current with the fan speed, the ignition success rate of the wall-mounted boiler can be improved to a certain extent by adjusting only the valve opening current or the fan speed. Therefore, at least one parameter of the valve opening current and the fan speed can be selected to control the ignition of the wall-mounted boiler.

[0085] In one embodiment, in steps S202 and S302, the ion current of the feedback pin can be detected to determine whether the ignition operation of the wall-mounted boiler is successful. Specifically, the ion current of the feedback pin of the wall-mounted boiler is detected, wherein the feedback pin is provided on the burner of the wall-mounted boiler. When the ion current is detected, it is determined that the wall-mounted boiler has successfully performed the ignition operation. When the ion current is not detected within a set time, it is determined that the wall-mounted boiler has failed to perform the ignition operation.

[0086] In one embodiment, in steps S201 and S301, the boiler startup instruction carries a target temperature, where the target temperature is a desired temperature set by the user based on water supply or heating needs. After determining that the boiler has successfully ignited, the boiler load is adjusted based on the target temperature to ensure that the water outlet temperature reaches the target temperature, thereby meeting the user's needs.

[0087] The ignition control method for a wall-mounted boiler provided in an embodiment of the present invention includes controlling the wall-mounted boiler to perform an ignition operation in response to a start-up instruction of the wall-mounted boiler; when it is detected that the ignition operation fails, detecting the valve opening current of the gas proportional valve of the wall-mounted boiler; when the valve opening current is greater than a preset current threshold, detecting the fan speed of the wall-mounted boiler; when the fan speed is greater than a preset speed threshold, adjusting the fan speed to the preset speed threshold, and controlling the wall-mounted boiler to perform a re-ignition operation. When the ignition operation fails, the valve opening current is first adjusted. By increasing the valve opening current to increase the opening of the gas proportional valve, the ignition success rate of the wall-mounted boiler is improved by increasing the air intake pressure. When the valve opening current is greater than the preset current threshold, the fan speed is adjusted. By reducing the fan speed, the ignition failure caused by flame separation and flame transmission failure is avoided by reducing the cold air intake volume, so as to improve the ignition success rate of the wall-mounted boiler. Therefore, the ignition operation of the wall-mounted boiler is controlled by combining the adjustment of the valve opening current and the fan speed, and the ignition success rate is improved from two aspects of increasing the air intake pressure and reducing the cold air intake volume, which can greatly improve the ignition success rate of the wall-mounted boiler.

[0088] According to another aspect of the present invention, an ignition control device for a wall-mounted boiler is provided. The device is used to implement the above-described embodiments and preferred embodiments, and details already described are omitted. 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.

[0089] Figure 4 FIG. 1 is a structural diagram of an ignition control device for a wall-mounted boiler according to an embodiment of the present invention. Figure 4 As shown, the device includes:

[0090] The ignition module 401 is used to control the boiler to perform an ignition operation in response to a start-up instruction of the boiler;

[0091] The ignition operation determination module 402 is used to determine whether the ignition of the wall-mounted boiler is successful;

[0092] The current detection module 403 is used to detect the valve opening current of the gas proportional valve of the wall-mounted boiler when the ignition fails. When the valve opening current is less than a preset current threshold, the valve opening current is increased and the wall-mounted boiler is controlled to perform a re-ignition operation;

[0093] The speed detection module 404 is used to detect the fan speed of the wall-mounted boiler when the valve opening current is greater than a preset current threshold;

[0094] The speed regulating module 405 is used to regulate the fan speed to the preset speed threshold when the fan speed is greater than or equal to the preset speed threshold, and control the wall-mounted boiler to perform a re-ignition operation.

[0095] In one embodiment, the apparatus comprises:

[0096] The current regulating module is used to control the wall-mounted boiler to perform a re-ignition operation when the valve opening current is less than or equal to the preset current threshold, and to adjust the valve opening current to the preset current threshold.

[0097] In one embodiment, the apparatus further comprises:

[0098] The fault reminder module is used to send a reminder message indicating that there is an ignition fault in the wall-mounted boiler when the fan speed is less than or equal to a preset speed threshold.

[0099] In one embodiment, the preset current threshold is the maximum valve opening current of the wall-mounted boiler, and the maximum valve opening current is used to represent the maximum value of the valve opening current when the wall-mounted boiler is ignited without explosion;

[0100] The preset speed threshold is the minimum fan speed of the wall-mounted boiler. The minimum fan speed is used to limit the minimum value of the fan speed when the wall-mounted boiler is ignited without explosion.

[0101] In one embodiment, the apparatus further comprises:

[0102] An ion current detection module is used to detect the ion current of the feedback pin of the wall-mounted boiler, which is set on the burner of the wall-mounted boiler;

[0103] The ignition operation determination module is used to determine whether the wall-mounted boiler has successfully performed the ignition operation when the ion current is detected.

[0104] In one embodiment, the start instruction carries a target temperature;

[0105] The device also includes:

[0106] The load adjustment module is used to adjust the load of the wall-mounted boiler based on the target temperature when it is detected that the wall-mounted boiler is ignited successfully.

[0107] In one embodiment, the apparatus further comprises:

[0108] The ignition operation determination module is further configured to determine that the ignition operation of the wall-mounted boiler has failed when no ion current is detected within a set time.

[0109] The further functional description of each of the above modules and units is the same as that of the above corresponding embodiments and will not be repeated here.

[0110] The ignition control 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.

[0111] According to an embodiment of the present invention, on the other hand, a controller for a wall-mounted boiler is provided, which has the above Figure 4 The ignition control device of the wall-mounted boiler.

[0112] See also Figure 5 , Figure 5 Schematic diagram of the structure of a controller of a wall-mounted boiler according to an embodiment of the present invention. Figure 5 As shown, the controller of the wall-mounted boiler includes: one or more processors 10, 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 5 A processor 10 is taken as an example.

[0113] The processor 10 may be a central processing unit, a network processor, or a combination thereof. The processor 10 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.

[0114] The memory 20 stores instructions that can be executed by at least one processor 10, so that the at least one processor 10 executes the method shown in the above embodiment.

[0115] 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 wall-mounted 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 10. Such remote memory may be connected to the wall-mounted 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.

[0116] 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.

[0117] 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.

[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 specific embodiments merely represent several embodiments of the present invention. Although 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 such modifications and improvements shall fall within the scope of protection of the present invention.

Claims

1. A method for controlling the ignition of a wall-mounted boiler, characterized in that: The method comprises: In response to a start-up instruction of the wall-mounted boiler, controlling the wall-mounted boiler to perform an ignition operation; Determining whether the ignition of the wall-mounted boiler is successful; When the ignition of the wall-mounted boiler fails, the valve opening current of the gas proportional valve of the wall-mounted boiler is detected. When the valve opening current is less than a preset current threshold, the valve opening current is increased and the wall-mounted boiler is controlled to perform a re-ignition operation, and the operation of determining whether the ignition of the wall-mounted boiler is successful is returned to. The preset current threshold is the value of the valve opening current when the ignition of the wall-mounted boiler does not cause deflagration; When the valve opening current is greater than or equal to a preset current threshold, detecting a fan speed of the wall-mounted boiler; When the fan speed is greater than a preset speed threshold, the fan speed is adjusted to the preset speed threshold, and the wall-mounted boiler is controlled to perform a re-ignition operation, and returns to execute an operation to determine whether the ignition of the wall-mounted boiler is successful; wherein, the preset speed threshold is the value of the fan speed of the wall-mounted boiler when no explosion occurs during ignition.

2. The method according to claim 1, characterized in that When the valve opening current is less than a preset current threshold, increasing the valve opening current and controlling the wall-mounted boiler to perform a re-ignition operation includes: When the valve opening current is less than a preset current threshold, the valve opening current is increased to the preset current threshold and the wall-mounted boiler is controlled to perform a re-ignition operation.

3. The method according to claim 1, characterized in that After detecting the fan speed of the wall-mounted boiler, the method further includes: When the fan speed is less than or equal to the preset speed threshold, a reminder message is issued to indicate that an ignition failure exists in the wall-mounted boiler.

4. The method according to any one of claims 1 to 3, characterized in that The preset current threshold is the maximum valve opening current of the wall-mounted boiler, and the maximum valve opening current is used to represent the maximum value of the valve opening current when the wall-mounted boiler is ignited without explosion; The preset speed threshold is the minimum fan speed of the wall-mounted boiler, and the minimum fan speed is used to limit the minimum value of the fan speed when the wall-mounted boiler is ignited without explosion.

5. The method according to any one of claims 1 to 3, characterized in that After controlling the wall-mounted boiler to perform an ignition operation, the method further includes: detecting an ion current of a feedback needle of the wall-mounted boiler, wherein the feedback needle is provided on a burner of the wall-mounted boiler; When the ion current is detected, it is determined that the wall-mounted boiler is ignited successfully.

6. The method according to claim 5, characterized in that The start instruction carries a target temperature; After determining that the wall-mounted boiler is successfully ignited, the method further includes: Based on the target temperature, the load of the wall-mounted boiler is adjusted.

7. The method according to any one of claims 1 to 3, characterized in that After controlling the wall-mounted boiler to perform an ignition operation, the method further includes: When no ion current is detected within the set time, it is determined that the ignition of the wall-mounted boiler has failed.

8. An ignition control device for a wall-mounted boiler, characterized in that: The device comprises: an ignition module, configured to control the boiler to perform an ignition operation in response to a start-up instruction of the boiler; An ignition operation determination module, used to determine whether the ignition of the wall-mounted boiler is successful; a current detection module, configured to detect the valve opening current of the gas proportional valve of the wall-mounted boiler when the ignition of the wall-mounted boiler fails, and to increase the valve opening current and control the wall-mounted boiler to perform a re-ignition operation when the valve opening current is less than a preset current threshold; A speed detection module, configured to detect the fan speed of the wall-mounted boiler when the valve opening current is greater than or equal to a preset current threshold; The speed regulating module is used to regulate the fan speed to the preset speed threshold when the fan speed is greater than the preset speed threshold, and control the wall-mounted boiler to perform a re-ignition operation.

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 ignition control 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: include: The controller for the wall-mounted boiler according to claim 9.

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