Control method, device and equipment for gas water heater

Abstract

The invention discloses a control method, device and equipment for a gas water heater, relates to the technical field of control, and can solve the problem that a passive adjusting mechanism of a fan is very easy to trigger in a high altitude area. The method comprises the steps that in response to a starting instruction for the gas water heater, the current altitude is determined, and a target control mode is determined from all candidate control modes based on the current altitude; wherein different candidate control modes correspond to different rotating speed thresholds; the initial current driving signals corresponding to the candidate control modes are the same; controlling the gas water heater to start and operate based on the target control mode; and in the process of controlling the gas water heater to operate based on the target control mode, if it is determined that the real-time rotating speed of the draught fan is larger than or equal to a rotating speed threshold value corresponding to the target control mode, a current driving signal currently corresponding to the target control mode is increased based on a first preset adjusting rule.

Description

Technical Field

[0001] The present application relates to the field of control technology, and in particular to a control method, device, and equipment for a gas water heater. Background Art

[0002] At present, during the normal operation of the gas water heater, the main controller can drive the fan to operate by outputting a fixed current signal. When the external wind pressure is too large, the smoke exhaust port of the smoke duct of the gas water heater may be blocked, so at this time the fan will actively increase the speed to discharge the smoke in the smoke duct to clear the smoke exhaust port. When the external wind pressure is particularly large, it is difficult to clear the smoke exhaust port by relying solely on the fan's own adjustment mechanism. Therefore, in the prior art, when the fan speed increases to a predetermined speed, the main controller can increase the current signal sent to the fan (that is, the main controller's adjustment mechanism for the fan) to further increase the fan speed, thereby clearing the smoke exhaust port.

[0003] However, in some high-altitude areas, due to the low air density, the work required for the fan to operate is very small. In this way, when the main controller drives the fan to operate by outputting a fixed current signal, the speed of the fan will be very high, which can easily trigger the main controller's adjustment mechanism for the fan, affecting the normal operation of the gas water heater. Summary of the invention

[0004] The present application provides a control method, device, and equipment for a gas water heater, which can solve the problem that the passive adjustment mechanism of the fan is easily triggered in high-altitude areas, thereby ensuring the normal operation of the gas water heater.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] In a first aspect, the present application provides a control method for a gas water heater, which includes a fan, and the method includes: in response to a start-up instruction for the gas water heater, determining a current altitude, and determining a target control mode from each candidate control mode based on the current altitude; wherein different candidate control modes correspond to different speed thresholds; the initial current drive signal corresponding to each candidate control mode is the same; the current drive signal is a signal output to the fan for driving the fan to operate during the process of controlling the operation of the gas water heater; controlling the gas water heater to start operation based on the target control mode; during the process of controlling the operation of the gas water heater based on the target control mode, if it is determined that the real-time speed of the fan is greater than or equal to the speed threshold corresponding to the target control mode, then increasing the current drive signal currently corresponding to the target control mode based on a first preset adjustment rule.

[0007] In the technical solution provided by the present application, a plurality of candidate control modes can be set in advance according to different altitudes, and the initial current drive signals corresponding to these candidate control modes are the same. Among them, the current drive signal is a signal output to the fan for driving the fan to operate in the process of controlling the operation of the gas water heater, and the larger the current drive signal, the larger the fan speed, and the smaller the current drive signal, the smaller the fan speed. In addition, when setting each candidate control mode, different candidate control modes can be set to correspond to different speed thresholds, and the speed threshold is the speed threshold corresponding to when the air-increasing point of the fan is triggered (when the air-increasing point of the fan is triggered, the current drive signal sent to the fan can be increased, which is the passive adjustment mechanism of the fan). When receiving a start-up instruction for a gas water heater, the current altitude can be determined first, and then the target control mode corresponding to the current altitude can be determined from the preset candidate control modes; thereafter, the gas water heater can be controlled to start operation based on the target control mode; in the process of controlling the operation of the gas water heater based on the target control mode, if it is determined that the real-time speed of the fan is greater than or equal to the speed threshold corresponding to the target control mode, the air-adding point under the target control mode can be triggered, and the current drive signal currently corresponding to the target control mode can be increased based on the first preset adjustment rule. Since different candidate control modes are set for different altitudes, and different candidate control modes correspond to different speed thresholds, the timing of triggering the air-adding point of the fan is different under different candidate control modes, so the timing of triggering the air-adding point of the fan for the candidate control mode corresponding to the high altitude can be made later than the candidate control mode corresponding to the normal altitude (the speed threshold of the candidate control mode corresponding to the high altitude can be set to be greater than the speed threshold of the candidate control mode corresponding to the normal altitude). In this way, in high altitude areas, the fan's air addition point will no longer be easily triggered (that is, the fan's passive adjustment mechanism will not be easily triggered. For example, the passive adjustment mechanism may be the adjustment mechanism of the main controller of the gas water heater for the fan).

[0008] It can be seen that in the technical solution provided by the present application, by pre-setting different candidate control modes for different altitudes, it is possible to trigger the air addition point of the fan under high-altitude conditions later than the timing of triggering the air addition point of the fan under normal-altitude conditions, thereby solving the problem of the passive adjustment mechanism of the fan that is extremely easy to trigger in high-altitude areas, and ensuring the normal operation of the gas water heater.

[0009] Optionally, each candidate control mode includes a standard control mode and at least one high-altitude control mode, and a target control mode is determined from each candidate control mode based on the current altitude, a speed threshold corresponding to the high-altitude control mode is greater than a speed threshold corresponding to the standard control mode, and determining the target control mode from each candidate control mode based on the current altitude includes:

[0010] Determine whether the current altitude is less than the preset altitude; when the current altitude is less than the preset altitude, determine the standard control mode as the target control mode; when the current altitude is greater than or equal to the preset altitude, determine the target control mode from various high altitude control modes based on the current altitude.

[0011] Optionally, after the gas water heater is started and operated based on the target control mode, the control method of the gas water heater provided by the present application further includes:

[0012] In the process of controlling the operation of the gas water heater based on the target control mode, it is determined whether the target control mode is the standard control mode; if the target control mode is not the standard control mode, the execution is triggered to increase the current drive signal currently corresponding to the target control mode based on the first preset adjustment rule if it is determined that the real-time speed of the fan is greater than or equal to the speed threshold corresponding to the target control mode.

[0013] Optionally, the gas water heater further includes an oxygen content detection device; after determining whether the target control mode is the standard control mode, the control method of the gas water heater provided by the present application further includes:

[0014] When the target control mode is the standard control mode, determine whether the first oxygen content parameter currently detected by the oxygen content detection device is less than the preset oxygen content parameter; when the first oxygen content parameter is less than the preset oxygen content parameter, trigger the execution of the operation of increasing the current drive signal currently corresponding to the target control mode based on the first preset adjustment rule if it is determined that the real-time speed of the fan is greater than or equal to the speed threshold corresponding to the target control mode.

[0015] Optionally, when the first oxygen content parameter is less than the preset oxygen content parameter, after the operation of increasing the current drive signal currently corresponding to the target control mode based on the first preset adjustment rule, the control method of the gas water heater provided by the present application further includes:

[0016] After controlling the gas water heater to run for a first preset time based on the current target control mode, determine whether the second oxygen content parameter currently detected by the oxygen content detection device is less than the preset oxygen content parameter; if the second oxygen content parameter is less than the preset oxygen content parameter, issue a fault prompt message.

[0017] Optionally, issue a fault prompt message, including:

[0018] Based on the second preset adjustment rule, the current drive signal currently corresponding to the target control mode is increased again; after controlling the gas water heater to continue to run for the second preset time period based on the current target control mode, determine whether the speed change value of the real-time speed of the fan within the third preset time period is greater than the preset change value; when it is determined that the speed change value is greater than the preset change value, a fault prompt information of the water heater being blocked is issued.

[0019] Optionally, after determining whether the speed change value of the real-time speed of the fan within the third preset time period is greater than the preset change value, the control method of the gas water heater provided by the present application further includes:

[0020] When it is determined that the speed change value is less than or equal to the preset change value, the proportional valve current corresponding to the target control mode is increased, and a fault prompt message indicating that the current condition is negative pressure is issued.

[0021] Optionally, determining the current altitude includes: determining the current altitude based on a first oxygen content parameter currently detected by an oxygen content detection device.

[0022] In a second aspect, the present application provides a control device for a gas water heater, the gas water heater comprising a fan, the device comprising: a determination module, a control module and an adjustment module;

[0023] A determination module, for determining the current altitude in response to a start-up instruction for the gas water heater, and determining a target control mode from each candidate control mode based on the current altitude; wherein different candidate control modes correspond to different speed thresholds; the initial current drive signal corresponding to each candidate control mode is the same; the current drive signal is a signal output to the fan for driving the fan to operate in the process of controlling the operation of the gas water heater;

[0024] A control module, used for controlling the start-up and operation of the gas water heater based on a target control mode;

[0025] The adjustment module is used to increase the current drive signal currently corresponding to the target control mode based on the first preset adjustment rule if it is determined that the real-time speed of the fan is greater than or equal to the speed threshold corresponding to the target control mode during the process of controlling the operation of the gas water heater based on the target control mode.

[0026] Optionally, each candidate control mode includes a standard control mode and at least one high-altitude control mode, the rotation speed threshold corresponding to the high-altitude control mode is greater than the rotation speed threshold corresponding to the standard control mode, and the determination module is specifically used to:

[0027] Determine whether the current altitude is less than the preset altitude; when the current altitude is less than the preset altitude, determine the standard control mode as the target control mode; when the current altitude is greater than or equal to the preset altitude, determine the target control mode from various high altitude control modes based on the current altitude.

[0028] Optionally, the determination module is further configured to:

[0029] After the gas water heater is started and operated based on the target control mode, during the process of controlling the operation of the gas water heater based on the target control mode, it is determined whether the target control mode is the standard control mode; when the target control mode is not the standard control mode, the execution is triggered to increase the current drive signal currently corresponding to the target control mode based on the first preset adjustment rule if it is determined that the real-time speed of the fan is greater than or equal to the speed threshold corresponding to the target control mode.

[0030] Optionally, the gas water heater further includes an oxygen content detection device; the determination module is further used for:

[0031] After determining whether the target control mode is the standard control mode, if the target control mode is the standard control mode, determine whether the first oxygen content parameter currently detected by the oxygen content detection device is less than the preset oxygen content parameter; when the first oxygen content parameter is less than the preset oxygen content parameter, trigger the execution of the operation of increasing the current drive signal currently corresponding to the target control mode based on the first preset adjustment rule if it is determined that the real-time speed of the fan is greater than or equal to the speed threshold corresponding to the target control mode.

[0032] Optionally, the control device of the gas water heater provided in the present application further includes a fault prompt module;

[0033] The determination module is further used to: when the first oxygen content parameter is less than the preset oxygen content parameter, after increasing the operation of the current driving signal currently corresponding to the target control mode based on the first preset adjustment rule, control the gas water heater to operate for a first preset time based on the current target control mode, and then determine whether the second oxygen content parameter currently detected by the oxygen content detection device is less than the preset oxygen content parameter;

[0034] The fault prompt module is used to issue a fault prompt message when the second oxygen content parameter is less than a preset oxygen content parameter.

[0035] Optionally, the fault prompt module is specifically used for:

[0036] Based on the second preset adjustment rule, the current drive signal currently corresponding to the target control mode is increased again; after controlling the gas water heater to continue to run for the second preset time period based on the current target control mode, determine whether the speed change value of the real-time speed of the fan within the third preset time period is greater than the preset change value; when it is determined that the speed change value is greater than the preset change value, a fault prompt information of the water heater being blocked is issued.

[0037] Optionally, the fault prompt module is further used for:

[0038] After determining whether the speed change value of the real-time fan speed within the third preset time period is greater than the preset change value, if it is determined that the speed change value is less than or equal to the preset change value, the proportional valve current corresponding to the target control mode is increased, and a fault prompt information indicating that the current condition is negative pressure is issued.

[0039] Optionally, the determination module is specifically used to determine the current altitude according to a first oxygen content parameter currently detected by the oxygen content detection device.

[0040] In a third aspect, the present application provides a control device for a gas water heater, comprising a memory, a processor, a bus and a communication interface; the memory is used to store computer execution instructions, and the processor is connected to the memory through a bus; when the control device of the gas water heater is running, the processor executes the computer execution instructions stored in the memory, so that the control device of the gas water heater executes the control method of the gas water heater provided in the first aspect above.

[0041] The description of the second and third aspects in this application can refer to the detailed description of the first aspect; and the beneficial effects of the description of the second and third aspects can refer to the beneficial effect analysis of the first aspect, which will not be repeated here.

[0042] In this application, the names of the above-mentioned devices or functional modules are not limited. In actual implementation, these devices or functional modules may appear with other names. As long as the functions of each device or functional module are similar to those of this application, they are within the scope of this application and its equivalent technologies.

[0043] These and other aspects of the present application will become more apparent from the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A flow chart of a control method for a gas water heater provided in an embodiment of the present application;

[0045] Figure 2 A flow chart of another method for controlling a gas water heater provided in an embodiment of the present application;

[0046] Figure 3A flow chart of another method for controlling a gas water heater provided in an embodiment of the present application;

[0047] Figure 4 A schematic diagram of the structure of a control device for a gas water heater provided in an embodiment of the present application;

[0048] Figure 5 A schematic diagram of the structure of a control device for a gas water heater provided in an embodiment of the present application. DETAILED DESCRIPTION

[0049] The control method, device, and equipment of the gas water heater provided in the embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0050] The term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0051] The terms "first" and "second" and the like in the specification and drawings of this application are used to distinguish different objects, or to distinguish different processing of the same object, rather than to describe a specific order of objects.

[0052] In addition, the terms "including" and "having" and any variations thereof mentioned in the description of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include other steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0053] It should be noted that, in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0054] In the description of the present application, unless otherwise specified, “plurality” means two or more.

[0055] At present, during the normal operation of the gas water heater, the main controller can drive the fan to operate by outputting a fixed current signal. When the external wind pressure is too large, the smoke exhaust port of the smoke pipe of the gas water heater may be blocked, so at this time the fan will actively increase the speed to discharge the smoke in the smoke pipe to clear the smoke exhaust port (this is the active adjustment mechanism of the fan). When the external wind pressure is particularly large, it is difficult to clear the smoke exhaust port by relying solely on the fan's own active adjustment mechanism. Therefore, in the prior art, when the fan speed increases to a predetermined speed, the main controller can increase the current signal sent to the fan (this is the main controller's adjustment mechanism for the fan, that is, the fan's passive adjustment mechanism) to further increase the fan speed, thereby clearing the smoke exhaust port.

[0056] However, in some high-altitude areas, due to the low air density, the work required for the fan to operate is very small. In this way, when the main controller drives the fan to operate by outputting a fixed current signal, the speed of the fan will be very high, which can easily trigger the main controller's adjustment mechanism for the fan, affecting the normal operation of the gas water heater.

[0057] In response to the problems existing in the above-mentioned prior art, an embodiment of the present application provides a control method for a gas water heater. By pre-setting different candidate control modes for different altitudes, the method can trigger the air addition point of the fan under high-altitude conditions at a timing later than the timing of triggering the air addition point of the fan under normal altitude conditions, thereby solving the problem of the passive adjustment mechanism of the fan being extremely easy to trigger in high-altitude areas, and ensuring the normal operation of the gas water heater.

[0058] The control method of the gas water heater provided in the embodiment of the present application can be executed by the control device of the gas water heater provided in the embodiment of the present application, and the device can be implemented by software and / or hardware, and integrated in the control device of the gas water heater that executes the method. Exemplarily, the control device of the gas water heater can be the main controller of the gas water heater, or it can be the gas water heater itself. In the following description of the embodiment of the present application, the description will be carried out by taking the execution subject as the main controller of the gas water heater (that is, the control device of the gas water heater is the main controller of the gas water heater) as an example. In addition, the gas water heater in the embodiment of the present application includes a fan.

[0059] The control method of the gas water heater provided in the embodiment of the present application is described below with reference to the accompanying drawings.

[0060] Reference Figure 1 The control method of the gas water heater provided in the embodiment of the present application includes S101-S103:

[0061] S101. In response to a start-up instruction for a gas water heater, determine a current altitude, and determine a target control mode from candidate control modes based on the current altitude.

[0062] The start instruction may be an instruction triggered by a user to control the gas water heater to start running. In a possible implementation, the start instruction may be an instruction triggered by a user to turn on the gas water heater; or the start instruction may be an instruction triggered by a user pressing a confirmation start button on a control panel of the gas water heater.

[0063] In the embodiment of the present application, when the main controller detects the start instruction, it can first determine the current altitude. Exemplarily, the main controller can be connected to an altitude measuring instrument to obtain the current altitude collected by the altitude measuring instrument.

[0064] In a possible implementation, multiple altitude intervals can be pre-set, and then different candidate control modes can be pre-set for each altitude interval. After the main controller determines the current altitude, it can first determine the target altitude interval to which the current altitude belongs, and then determine the target control mode corresponding to the target altitude interval from the pre-set candidate control modes. Among them, different candidate control modes correspond to different speed thresholds, and the speed threshold is the speed threshold corresponding to the wind point of the fan is triggered; specifically, when the real-time speed of the fan reaches the speed threshold, the wind point of the fan is triggered (that is, the passive adjustment mechanism of the fan is triggered), and the current drive signal sent to the fan can be increased at this time to further increase the speed of the fan, thereby avoiding the blockage of the smoke exhaust port of the smoke pipe of the gas water heater. In addition, the initial current drive signal corresponding to each candidate control mode is the same, and the current drive signal is also the signal output to the fan for driving the fan to run in the process of controlling the operation of the gas water heater, and the larger the current drive signal, the larger the fan speed, and the smaller the current drive signal, the smaller the fan speed.

[0065] Optionally, each candidate control mode includes a standard control mode and at least one high-altitude control mode, the speed threshold corresponding to the high-altitude control mode is greater than the speed threshold corresponding to the standard control mode, and the target control mode is determined from each candidate control mode based on the current altitude, including: determining whether the current altitude is less than a preset altitude; when the current altitude is less than the preset altitude, determining the standard control mode as the target control mode; when the current altitude is greater than or equal to the preset altitude, determining the target control mode from each high-altitude control mode based on the current altitude.

[0066] The preset altitude may be an altitude determined in advance by humans, for example, 500 meters.

[0067] In a possible implementation, a standard height of a normal altitude can be predetermined (for example, it can be 0 meters), and then the candidate control modes can be divided based on the standard height as the dividing line. Exemplarily, the embodiment of the present application can set a standard control mode and four high-altitude control modes. Specifically, when the altitude is below 500 meters, it can correspond to the standard control mode; when the altitude is between 500 meters and 1500 meters, it can correspond to high-altitude control mode 1; when the altitude is between 1500 meters and 2500 meters, it can correspond to high-altitude control mode 2; when the altitude is between 2500 meters and 3500 meters, it can correspond to high-altitude control mode 3; when the altitude is above 3500 meters, it can correspond to high-altitude control mode 4. In addition, the speed thresholds corresponding to all high-altitude control modes are greater than the speed thresholds corresponding to the standard control mode. In different high-altitude control modes, the higher the corresponding altitude, the higher the corresponding speed threshold.

[0068] Under different working conditions (for example, high-altitude working conditions and non-high-altitude working conditions), even with the same control parameters, the operating state of the gas water heater will be different. In order to avoid excessive differences in the operating state of the gas water heater under different working conditions, in the embodiment of the present application, different control logics can be used to control the gas water heater to adapt to changes in working conditions. Therefore, in the embodiment of the present application, after determining the current altitude, the main controller can first determine whether the current working condition is a high-altitude working condition based on the current altitude (the high-altitude control mode corresponds to the high-altitude working condition, and the standard control mode corresponds to the non-high-altitude working condition).

[0069] S102: Control the gas water heater to start operation based on the target control mode.

[0070] After determining the target control mode, the main controller may first control the gas water heater to start operation with an initial current driving signal corresponding to the target control mode.

[0071] S103. In the process of controlling the operation of the gas water heater based on the target control mode, if it is determined that the real-time speed of the fan is greater than or equal to the speed threshold corresponding to the target control mode, the current drive signal currently corresponding to the target control mode is increased based on the first preset adjustment rule.

[0072] The first preset adjustment rule may be an adjustment rule determined in advance by humans. For example, the first preset adjustment rule may be to increase the current drive signal currently corresponding to the target control mode by a first preset signal value. The first preset signal value may be a fixed current drive signal determined in advance.

[0073] In the process of controlling the operation of the gas water heater with the initial current drive signal corresponding to the target control mode, if the real-time speed of the fan continues to increase, it means that the fan is actively increasing the speed to discharge the smoke in the smoke pipe; when the real-time speed of the fan increases to the speed threshold corresponding to the target control mode, it means that the external wind pressure at this time is particularly large, and it is difficult to clear the smoke exhaust port only by relying on the fan's own adjustment mechanism. At this time, the current drive signal corresponding to the current target control mode can be increased to further increase the fan speed, so that the smoke exhaust port can be cleared through the external adjustment mechanism.

[0074] Taking the candidate control modes including the standard control mode, high altitude control mode 1, high altitude control mode 2, high altitude control mode 3, and high altitude control mode 4 as an example, the speed threshold corresponding to the standard control mode is less than the speed threshold corresponding to the high altitude control mode 1, the speed threshold corresponding to the high altitude control mode 1 is less than the speed threshold corresponding to the high altitude control mode 2, the speed threshold corresponding to the high altitude control mode 2 is less than the speed threshold corresponding to the high altitude control mode 3, and the speed threshold corresponding to the high altitude control mode 3 is less than the speed threshold corresponding to the high altitude control mode 4. Moreover, the speed thresholds corresponding to all high altitude control modes are greater than the speed thresholds corresponding to the standard control mode, and in different high altitude control modes, the higher the corresponding altitude, the higher the corresponding speed threshold.

[0075] Since the speed threshold of the candidate control mode corresponding to high altitude is greater than the speed threshold of the candidate control mode corresponding to low altitude, the timing of triggering the wind increase point of the fan by the candidate control mode corresponding to high altitude is later than the timing of triggering the wind increase point of the fan by the candidate control mode corresponding to low altitude. Therefore, in high altitude areas, the wind increase point of the fan will no longer be easily triggered (that is, it is not easy to trigger the passive adjustment mechanism of the fan).

[0076] Optionally, after the gas water heater is started and operated based on the target control mode, the control method of the gas water heater also includes: in the process of controlling the operation of the gas water heater based on the target control mode, determining whether the target control mode is a standard control mode; when the target control mode is not the standard control mode, triggering the execution of the operation of increasing the current drive signal currently corresponding to the target control mode based on the first preset adjustment rule if it is determined that the real-time speed of the fan is greater than or equal to the speed threshold corresponding to the target control mode.

[0077] In the embodiment of the present application, different control logics can be set for high-altitude working conditions and non-high-altitude working conditions (the high-altitude control mode corresponds to the high-altitude working condition, and the standard control mode corresponds to the non-high-altitude working condition). Under high-altitude working conditions, the control logic can be simplified; specifically, if it is determined to be a high-altitude working condition, it can start to directly monitor the difference between the speed threshold corresponding to the target control mode and the real-time speed of the fan. If it is detected that the difference is not a positive value, the passive adjustment mechanism of the fan is triggered to increase the current drive signal currently corresponding to the target control mode.

[0078] Optionally, the gas water heater also includes an oxygen content detection device; after determining whether the target control mode is the standard control mode, the control method of the gas water heater provided in the embodiment of the present application also includes: when the target control mode is the standard control mode, determining whether the first oxygen content parameter currently detected by the oxygen content detection device is less than a preset oxygen content parameter; when the first oxygen content parameter is less than the preset oxygen content parameter, triggering the execution of the operation of increasing the current drive signal currently corresponding to the target control mode based on the first preset adjustment rule if it is determined that the real-time speed of the fan is greater than or equal to the speed threshold corresponding to the target control mode.

[0079] Among them, the oxygen content detection device can be an oxygen content detector; the preset oxygen content parameter can be an oxygen content value determined in advance by humans when the gas water heater is operating normally.

[0080] When it is determined that the target control mode is the standard control mode, that is, when the operating condition is not a high-altitude condition, it is possible to first determine whether the current oxygen content is normal, that is, to determine whether the first oxygen content parameter is less than the preset oxygen content parameter. When it is determined that the first oxygen content parameter is greater than or equal to the preset oxygen content parameter, it is determined that the current oxygen content is normal, and the gas water heater can continue to be controlled according to the pre-set control parameters. When it is determined that the first oxygen content parameter is not greater than the preset oxygen content parameter, it is determined that the current oxygen content is abnormal, indicating that an operational failure may have occurred at this time (for example, the exhaust port of the smoke pipe of the gas water heater is blocked, and the external wind pressure is particularly large, and it is difficult to clear the exhaust port only by relying on the fan's own adjustment mechanism). At this time, the difference between the speed threshold corresponding to the target control mode and the real-time speed of the fan can be monitored. If the difference is not a positive value, the passive adjustment mechanism of the fan is triggered.

[0081] Optionally, determining the current altitude includes: determining the current altitude based on a first oxygen content parameter currently detected by an oxygen content detection device.

[0082] Since the higher the altitude, the less oxygen there is in the air, the real-time oxygen content parameter of the gas water heater can also characterize the altitude. Specifically, the larger the oxygen content parameter, the lower the altitude, and the smaller the oxygen content parameter, the higher the altitude. Based on this, the embodiment of the present application can also determine the current altitude through the collected data of the oxygen content detection device.

[0083] Optionally, when the first oxygen content parameter is less than the preset oxygen content parameter, after the operation of increasing the current drive signal currently corresponding to the target control mode based on the first preset adjustment rule, the control method of the gas water heater provided in the embodiment of the present application also includes: after controlling the gas water heater to operate for a first preset time based on the current target control mode, determining whether the second oxygen content parameter currently detected by the oxygen content detection device is less than the preset oxygen content parameter; when the second oxygen content parameter is less than the preset oxygen content parameter, issuing a fault prompt message.

[0084] The first preset duration may be a predetermined duration, for example, 5 minutes.

[0085] When the blockage is not very serious, a short period of adding air (i.e., driving the fan to run with an increased current drive signal) can clear the blockage. Based on this, in the embodiment of the present application, after driving the fan to run for a period of time with an increased current drive signal, it is possible to judge again whether the current oxygen content is normal, that is, to determine whether the currently detected second oxygen content parameter is less than the preset oxygen content parameter. When the second oxygen content parameter is greater than or equal to the preset oxygen content parameter, it indicates that the gas water heater is fully burning, the fault has been repaired, and the current control parameters can be maintained to control the operation of the gas water heater. When the second oxygen content parameter is less than the preset oxygen content parameter, it indicates that the gas water heater is not fully burning, and the fault has not been repaired in a short period of time. A fault warning can be performed and a fault prompt message can be issued.

[0086] Optionally, issuing a fault warning message includes: raising the current drive signal currently corresponding to the target control mode again based on the second preset adjustment rule; after controlling the gas water heater to continue running for a second preset time based on the current target control mode, determining whether the speed change value of the real-time fan speed within a third preset time is greater than the preset change value; when it is determined that the speed change value is greater than the preset change value, issuing a fault warning message that the water heater is blocked.

[0087] The second preset adjustment rule may be an adjustment rule determined in advance manually. For example, the second preset adjustment rule may be to increase the current drive signal currently corresponding to the target control mode by a second preset signal value.

[0088] The second preset signal value may be a fixed current drive signal determined in advance. The second preset duration and the third preset duration may be durations determined in advance manually. In a possible implementation, the third preset duration may be a period of time in the past, and the third preset duration is less than the second preset duration. The preset change value may be a predetermined acceleration of the fan speed.

[0089] Under non-high altitude working conditions, insufficient oxygen content may not only be caused by the blockage of the exhaust port of the smoke pipe of the gas water heater, but also by the negative pressure working condition. For example, when the gas water heater is installed in the cabinet, the fan cannot bring out more wind during normal operation, and the air intake is very small, which will also lead to incomplete combustion. Based on this, in the embodiment of the present application, when it is determined that the fault has not been repaired in a short time, the cause of the fault can be further analyzed. Specifically, the fan can be aired twice (that is, the fan is driven to run with the current drive signal after the current is increased again). After the second preset time of the second airing, it can be determined whether the acceleration of the real-time speed of the fan is changing. If the acceleration is changing, it means that the fault is caused by blockage (at this time, the fan speed is high enough, and the fan is still using the active adjustment mechanism, that is, adaptive airing, indicating that the gas water heater is blocked. If it continues to burn, it is very dangerous, and a fault warning can be directly performed); if the acceleration is not changing, it means that the fault is caused by negative pressure.

[0090] Optionally, after determining whether the speed change value of the real-time fan speed within a third preset time period is greater than the preset change value, the control method of the gas water heater provided in the embodiment of the present application also includes: when it is determined that the speed change value is less than or equal to the preset change value, increasing the proportional valve current corresponding to the target control mode, and issuing a fault prompt information that the current is in a negative pressure condition.

[0091] When the fault is caused by negative pressure, the proportional valve current corresponding to the target control mode can be increased to increase the gas intake volume, so that the fan speed can match the flame state of the gas water heater to avoid the gas water heater from flameout or flameout.

[0092] In the control method of the gas water heater provided in the embodiment of the present application, a plurality of candidate control modes can be set in advance according to different altitudes, and the initial current drive signals corresponding to these candidate control modes are the same. Among them, the current drive signal is a signal output to the fan for driving the fan to operate in the process of controlling the operation of the gas water heater, and the larger the current drive signal, the larger the fan speed, and the smaller the current drive signal, the smaller the fan speed. In addition, when setting each candidate control mode, different candidate control modes can be set to correspond to different speed thresholds, and the speed threshold is the speed threshold corresponding to when the air-increasing point of the fan is triggered (when the air-increasing point of the fan is triggered, the current drive signal sent to the fan can be increased, which is the passive adjustment mechanism of the fan). When receiving a start-up instruction for a gas water heater, the current altitude can be determined first, and then the target control mode corresponding to the current altitude can be determined from the preset candidate control modes; thereafter, the gas water heater can be controlled to start operation based on the target control mode; in the process of controlling the operation of the gas water heater based on the target control mode, if it is determined that the real-time speed of the fan is greater than or equal to the speed threshold corresponding to the target control mode, the air-adding point under the target control mode can be triggered, and the current drive signal currently corresponding to the target control mode can be increased based on the first preset adjustment rule. Since different candidate control modes are set for different altitudes, and different candidate control modes correspond to different speed thresholds, the timing of triggering the air-adding point of the fan is different under different candidate control modes, so the timing of triggering the air-adding point of the fan for the candidate control mode corresponding to the high altitude can be made later than the candidate control mode corresponding to the normal altitude (the speed threshold of the candidate control mode corresponding to the high altitude can be set to be greater than the speed threshold of the candidate control mode corresponding to the normal altitude). In this way, in high altitude areas, the fan's air addition point will no longer be easily triggered (that is, the fan's passive adjustment mechanism will not be easily triggered. For example, the passive adjustment mechanism may be the adjustment mechanism of the main controller of the gas water heater for the fan).

[0093] It can be seen that the embodiment of the present application sets different candidate control modes for different altitudes in advance, so that the timing of triggering the air addition point of the fan under high-altitude conditions is later than the timing of triggering the air addition point of the fan under normal altitude conditions, thereby solving the problem of the passive adjustment mechanism of the fan that is extremely easy to trigger in high-altitude areas, and ensuring the normal operation of the gas water heater.

[0094] Based on the above description, optional, such as Figure 2 As shown, the embodiment of the present application also provides a control method for a gas water heater, which can be applied to a control device of a gas water heater (such as Figure 4 The method comprises the following steps:

[0095] S201. In response to a start-up instruction for a gas water heater, determine a current altitude according to a first oxygen content parameter currently detected by an oxygen content detection device.

[0096] S202: When the current altitude is less than the preset altitude, determine the standard control mode as the target control mode; when the current altitude is greater than or equal to the preset altitude, determine the target control mode from various high altitude control modes based on the current altitude.

[0097] S203: Control the gas water heater to start operation based on the target control mode.

[0098] S204. In the process of controlling the operation of the gas water heater based on the target control mode, if the target control mode is not the standard control mode, when it is determined that the real-time speed of the fan is greater than or equal to the speed threshold corresponding to the target control mode, the current drive signal currently corresponding to the target control mode is increased based on the first preset adjustment rule.

[0099] Optional, such as Figure 3 As shown, the embodiment of the present application also provides a control method for a gas water heater, which can be applied to a control device of a gas water heater (such as Figure 4 The method comprises the following steps:

[0100] S301. In response to a start-up instruction for a gas water heater, determine a current altitude, determine a target control mode from candidate control modes based on the current altitude, and control the gas water heater to start operation based on the target control mode.

[0101] S302: If the target control mode is the standard control mode, determine whether the first oxygen content parameter is less than a preset oxygen content parameter.

[0102] When the first oxygen content parameter is less than the preset oxygen content parameter, step S304 is executed; when the first oxygen content parameter is greater than or equal to the preset oxygen content parameter, step S303 is executed.

[0103] S303, continue to control the operation of the gas water heater according to the pre-set control parameters.

[0104] S304: Run for a first preset time period based on the current target control mode.

[0105] S305: Determine whether the second oxygen content parameter is less than a preset oxygen content parameter.

[0106] When the second oxygen content parameter is greater than or equal to the preset oxygen content parameter, step S306 is executed; when the second oxygen content parameter is less than the preset oxygen content parameter, step S307 is executed.

[0107] S306. Maintain the current control parameters to control the operation of the gas water heater.

[0108] S307: Based on the second preset adjustment rule, the current drive signal currently corresponding to the target control mode is again increased, and the gas water heater is controlled to continue to operate for a second preset time period based on the current target control mode.

[0109] S308: Determine whether a speed change value of the real-time speed of the fan within a third preset time period is greater than a preset change value.

[0110] If it is determined that the rotation speed change value is greater than the preset change value, step S309 is executed; if it is determined that the rotation speed change value is not greater than the preset change value, step S3010 is executed.

[0111] S309: Send out a fault prompt message indicating that the water heater is blocked.

[0112] S3010, increase the proportional valve current corresponding to the target control mode, and issue a fault prompt message indicating that the current working condition is in a negative pressure state.

[0113] like Figure 4 As shown, an embodiment of the present application further provides a control device for a gas water heater, the gas water heater includes a fan, and the device includes: a determination module 11, a control module 21 and an adjustment module 31.

[0114] The determination module 11 executes S101 in the above method embodiment, the control module 21 executes S102 in the above method embodiment, and the adjustment module 31 executes S103 in the above method embodiment.

[0115] Specifically, the determination module 11 is used to determine the current altitude in response to the start-up instruction for the gas water heater, and determine the target control mode from each candidate control mode based on the current altitude; wherein different candidate control modes correspond to different speed thresholds; the initial current drive signal corresponding to each candidate control mode is the same; the current drive signal is a signal output to the fan for driving the fan to operate in the process of controlling the operation of the gas water heater;

[0116] A control module 21, used to control the gas water heater to start and run based on a target control mode;

[0117] The adjustment module 31 is used to increase the current drive signal currently corresponding to the target control mode based on the first preset adjustment rule if it is determined that the real-time speed of the fan is greater than or equal to the speed threshold corresponding to the target control mode during the process of controlling the operation of the gas water heater based on the target control mode.

[0118] Optionally, each candidate control mode includes a standard control mode and at least one high-altitude control mode, and the rotation speed threshold corresponding to the high-altitude control mode is greater than the rotation speed threshold corresponding to the standard control mode. The determination module 11 is specifically configured to:

[0119] Determine whether the current altitude is less than the preset altitude; when the current altitude is less than the preset altitude, determine the standard control mode as the target control mode; when the current altitude is greater than or equal to the preset altitude, determine the target control mode from various high altitude control modes based on the current altitude.

[0120] Optionally, the determination module 11 is further used for:

[0121] After the gas water heater is started and operated based on the target control mode, during the process of controlling the operation of the gas water heater based on the target control mode, it is determined whether the target control mode is the standard control mode; when the target control mode is not the standard control mode, the execution is triggered to increase the current drive signal currently corresponding to the target control mode based on the first preset adjustment rule if it is determined that the real-time speed of the fan is greater than or equal to the speed threshold corresponding to the target control mode.

[0122] Optionally, the gas water heater further includes an oxygen content detection device; the determination module 11 is further used for:

[0123] After determining whether the target control mode is the standard control mode, if the target control mode is the standard control mode, determine whether the first oxygen content parameter currently detected by the oxygen content detection device is less than the preset oxygen content parameter; when the first oxygen content parameter is less than the preset oxygen content parameter, trigger the execution of the operation of increasing the current drive signal currently corresponding to the target control mode based on the first preset adjustment rule if it is determined that the real-time speed of the fan is greater than or equal to the speed threshold corresponding to the target control mode.

[0124] Optionally, the control device of the gas water heater provided in the present application further includes a fault prompt module;

[0125] The determination module 11 is further used to: when the first oxygen content parameter is less than the preset oxygen content parameter, after increasing the operation of the current driving signal currently corresponding to the target control mode based on the first preset adjustment rule, control the gas water heater to operate for a first preset time based on the current target control mode, and then determine whether the second oxygen content parameter currently detected by the oxygen content detection device is less than the preset oxygen content parameter;

[0126] The fault prompt module is used to issue a fault prompt message when the second oxygen content parameter is less than a preset oxygen content parameter.

[0127] Optionally, the fault prompt module is specifically used for:

[0128] Based on the second preset adjustment rule, the current drive signal currently corresponding to the target control mode is increased again; after controlling the gas water heater to continue to run for the second preset time period based on the current target control mode, determine whether the speed change value of the real-time speed of the fan within the third preset time period is greater than the preset change value; when it is determined that the speed change value is greater than the preset change value, a fault prompt information of the water heater being blocked is issued.

[0129] Optionally, the fault prompt module is further used for:

[0130] After determining whether the speed change value of the real-time fan speed within the third preset time period is greater than the preset change value, if it is determined that the speed change value is less than or equal to the preset change value, the proportional valve current corresponding to the target control mode is increased, and a fault prompt information indicating that the current condition is negative pressure is issued.

[0131] Optionally, the determination module 11 is specifically used to determine the current altitude according to a first oxygen content parameter currently detected by the oxygen content detection device.

[0132] Optionally, the control device of the gas water heater may further include a storage module, and the storage module is used to store program codes and the like of the control device of the gas water heater.

[0133] like Figure 5 As shown, the embodiment of the present application also provides a control device for a gas water heater. For example, the control device for the gas water heater may be a main controller of the gas water heater. The control device for the gas water heater includes a memory 41, a processor (such as Figure 5 42-1 and 42-2), a bus 43 and a communication interface 44; the memory 41 is used to store computer execution instructions, and the processor is connected to the memory 41 through the bus 43; when the control device of the gas water heater is running, the processor executes the computer execution instructions stored in the memory 41, so that the control device of the gas water heater executes the control method of the gas water heater provided in the above embodiment.

[0134] In a specific implementation, as an embodiment, the processor may include one or more central processing units (CPUs), such as Figure 5 As an embodiment, the control device of the gas water heater may include multiple processors, such as Figure 54 and 5. The processors 42-1 and 42-2 shown in FIG. Each of these processors may be a single-core processor (single-CPU) or a multi-core processor (multi-CPU). The processor here may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0135] The memory 41 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory 41 may exist independently and be connected to the processor via a bus 43. The memory 41 may also be integrated with the processor.

[0136] In a specific implementation, the memory 41 is used to store the data in this application and the computer execution instructions corresponding to the software program for executing this application. The processor can control various functions of the gas water heater by running or executing the software program stored in the memory 41 and calling the data stored in the memory 41.

[0137] The communication interface 44 uses any transceiver-like device for communicating with other devices or communication networks, such as a control system, a radio access network (RAN), a wireless local area network (WLAN), etc. The communication interface 44 may include a receiving unit to implement a receiving function, and a sending unit to implement a sending function.

[0138] The bus 43 may be an industry standard architecture (ISA) bus, a peripheral component interconnect (PCI) bus, or an extended industry standard architecture (EISA) bus. The bus 43 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 5 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0139] As an example, combining Figure 4 , the functions implemented by the adjustment module in the control device of the gas water heater are similar to Figure 5 When the control device of the gas water heater includes a storage module, the function implemented by the storage module is the same as Figure 5 The memory in implements the same function.

[0140] The explanation of the relevant contents in this embodiment can refer to the above method embodiment, which will not be repeated here.

[0141] Through the description of the above implementation methods, technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0142] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A control method for a gas water heater, characterized in that: The gas water heater includes a fan, and the method includes: In response to a start-up instruction for the gas water heater, a current altitude is determined, and a target control mode is determined from each candidate control mode based on the current altitude; wherein different candidate control modes correspond to different speed thresholds; the initial current drive signals corresponding to each candidate control mode are the same; the current drive signal is a signal output to the fan for driving the fan to operate in the process of controlling the operation of the gas water heater; Controlling the gas water heater to start operation based on the target control mode; In the process of controlling the operation of the gas water heater based on the target control mode, if it is determined that the real-time speed of the fan is greater than or equal to the speed threshold corresponding to the target control mode, the current drive signal currently corresponding to the target control mode is increased based on the first preset adjustment rule.

2. The control method of the gas water heater according to claim 1, characterized in that: The candidate control modes include a standard control mode and at least one high-altitude control mode, a rotation speed threshold corresponding to the high-altitude control mode is greater than a rotation speed threshold corresponding to the standard control mode, and determining a target control mode from the candidate control modes based on the current altitude includes: Determining whether the current altitude is less than a preset altitude; When the current altitude is less than the preset altitude, determining the standard control mode as the target control mode; In a case where the current altitude is greater than or equal to the preset altitude, the target control mode is determined from the high altitude control modes based on the current altitude.

3. The control method of the gas water heater according to claim 2, characterized in that: After controlling the gas water heater to start operation based on the target control mode, the method further includes: In the process of controlling the operation of the gas water heater based on the target control mode, determining whether the target control mode is the standard control mode; When the target control mode is not the standard control mode, the trigger executes an operation of increasing the current drive signal currently corresponding to the target control mode based on a first preset adjustment rule if it is determined that the real-time speed of the fan is greater than or equal to the speed threshold corresponding to the target control mode.

4. The control method of the gas water heater according to claim 3, characterized in that: The gas water heater further includes an oxygen content detection device; after determining whether the target control mode is the standard control mode, the method further includes: In a case where the target control mode is the standard control mode, determining whether a first oxygen content parameter currently detected by the oxygen content detection device is less than a preset oxygen content parameter; When the first oxygen content parameter is less than the preset oxygen content parameter, the operation of increasing the current drive signal currently corresponding to the target control mode based on a first preset adjustment rule is triggered if it is determined that the real-time speed of the fan is greater than or equal to the speed threshold corresponding to the target control mode.

5. The control method of the gas water heater according to claim 4, characterized in that: When the first oxygen content parameter is less than the preset oxygen content parameter, after the operation of increasing the current drive signal currently corresponding to the target control mode based on the first preset adjustment rule, the method further includes: After controlling the gas water heater to operate for a first preset time period based on the current target control mode, determining whether the second oxygen content parameter currently detected by the oxygen content detection device is less than the preset oxygen content parameter; When the second oxygen content parameter is less than the preset oxygen content parameter, a fault prompt message is issued.

6. The control method of the gas water heater according to claim 5, characterized in that: The sending of fault prompt information includes: Based on a second preset adjustment rule, the current driving signal currently corresponding to the target control mode is again increased; After the gas water heater is controlled to continue to operate for a second preset time period based on the current target control mode, determining whether a speed change value of the real-time speed of the fan within a third preset time period is greater than a preset change value; When it is determined that the rotation speed change value is greater than the preset change value, a fault prompt message indicating that the water heater is blocked is issued.

7. The control method of the gas water heater according to claim 6, characterized in that: After determining whether the speed change value of the real-time speed of the fan within the third preset time period is greater than the preset change value, the method further includes: When it is determined that the speed change value is less than or equal to the preset change value, the proportional valve current corresponding to the target control mode is increased, and a fault prompt message indicating that the current working condition is a negative pressure condition is issued.

8. The control method of the gas water heater according to any one of claims 4 to 7, characterized in that: Determining the current altitude includes: The current altitude is determined according to the first oxygen content parameter currently detected by the oxygen content detection device.

9. A control device for a gas water heater, characterized in that: The gas water heater includes a fan, and the device includes: a determination module, configured to determine the current altitude in response to a start-up instruction for the gas water heater, and determine a target control mode from each candidate control mode based on the current altitude; wherein different candidate control modes correspond to different speed thresholds; the initial current drive signals corresponding to each candidate control mode are the same; the current drive signal is a signal output to the fan for driving the fan to operate in the process of controlling the operation of the gas water heater; A control module, used for controlling the gas water heater to start and operate based on the target control mode; An adjustment module is used to increase the current drive signal currently corresponding to the target control mode based on a first preset adjustment rule if it is determined that the real-time speed of the fan is greater than or equal to a speed threshold corresponding to the target control mode during the process of controlling the operation of the gas water heater based on the target control mode.

10. A control device for a gas water heater, characterized in that: It includes a memory, a processor, a bus and a communication interface; the memory is used to store computer-executable instructions, and the processor is connected to the memory via the bus; When the control device of the gas water heater is running, the processor executes the computer execution instructions stored in the memory, so that the control device of the gas water heater executes the control method of the gas water heater according to any one of claims 1-8.

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