CN114739014A

CN114739014A - Method and device for controlling fan of gas water heater and gas water heater

Info

Publication number: CN114739014A
Application number: CN202210461785.7A
Authority: CN
Inventors: 卢楚鹏; 王杰盛; 张福昌; 张其
Original assignee: Guangdong Vanward New Electric Co Ltd
Current assignee: Guangdong Vanward New Electric Co Ltd
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-07-12

Abstract

The application relates to a fan control method and device for a gas water heater and the gas water heater. The control method of the fan of the gas water heater comprises the following steps: selecting an optimal fan control strategy from prestored fan control strategies based on the acquired actual fan rotating speed of the fan of the gas water heater and fan control parameters corresponding to the actual fan rotating speed according to a preset operation mode; each fan control strategy comprises a corresponding relation between the fan rotating speed and fan control parameters when the gas water heater operates under any combustion load, wherein the gas water heater of a smoke exhaust pipe type is positioned in an altitude range; the optimal fan control strategy is a fan control strategy matched with the type of a smoke exhaust pipe of the gas water heater and the altitude of the area where the gas water heater is located; and adjusting fan control parameters of the gas water heater during combustion based on the optimal fan control strategy so as to control the rotating speed of the fan. This application can effectively improve gas heater to the accuracy of fan wind speed control.

Description

Gas water heater fan control method and device and gas water heater

Technical Field

The application relates to the technical field of electric appliance control, in particular to a method and a device for controlling a fan of a gas water heater and the gas water heater.

Background

With the improvement of living standard of people, the requirement on the water heater is higher and higher. For the gas water heater with the fan, the corresponding air volume can be provided by controlling the rotating speed of the fan so as to maintain the gas water heater to execute the operation of the burner under a good condition. However, because the installation environment of each gas water heater may be different from the type of the smoke exhaust pipe of the gas water heater, if each gas water heater adopts the same fan control strategy, the deviation of the individual gas water heater is easily caused, which leads to inaccurate control of the wind speed of the fan of the gas water heater, and further causes the problems of incomplete combustion, vibration combustion, high exhaust emission and the like of the gas water heater.

In the implementation process, the inventor finds that at least the following problems exist in the conventional technology: the existing control method for the fan of the gas water heater has low accuracy.

Disclosure of Invention

In view of the above, it is necessary to provide a method and a device for controlling a fan of a gas water heater, and a gas water heater.

A fan control method for a gas water heater comprises the following steps:

acquiring an actual fan rotating speed of a fan of the gas water heater and a fan control parameter corresponding to the actual fan rotating speed according to a preset operation mode;

selecting an optimal fan control strategy from pre-stored fan control strategies according to the actual fan rotating speed and fan control parameters corresponding to the actual fan rotating speed; each fan control strategy comprises a corresponding relation between the fan rotating speed and fan control parameters when the gas water heater operates under any combustion load, wherein the gas water heater of one smoke exhaust pipe type is positioned in an altitude range; the optimal fan control strategy is a fan control strategy matched with the type of a smoke exhaust pipe of the gas water heater and the altitude of the area where the gas water heater is located;

and adjusting fan control parameters of the gas water heater during combustion based on the optimal fan control strategy so as to control the rotating speed of the fan.

In one embodiment, the preset operation mode includes a mode in which the gas water heater is in a non-combustion operation, and a mode in which the gas water heater is in a combustion operation.

In one embodiment, when the preset operation mode is a non-combustion operation mode of the gas water heater, selecting an optimal fan control strategy from pre-stored fan control strategies according to an actual fan rotation speed and fan control parameters corresponding to the actual fan rotation speed, and the method includes the following steps:

determining a first actual corresponding relation between the actual fan rotating speed and the fan control parameter according to the actual fan rotating speed and the fan control parameter corresponding to the actual fan rotating speed;

determining the actual altitude range of the current region of the gas water heater based on the altitude of the current region of the gas water heater;

selecting a first theoretical corresponding relation and a first actual corresponding relation from a prestored first theoretical corresponding relation set for first comparison, and determining the type of a smoke exhaust pipe of the gas water heater according to a first comparison result; the first theoretical corresponding relation is the corresponding relation between the fan rotating speed and the fan control parameter when any smoke exhaust pipe type gas water heater in the actual altitude range is in a non-combustion working mode;

and selecting the optimal fan control strategy from the fan control strategies based on the actual altitude range corresponding to the gas water heater and the type of the smoke exhaust pipe of the gas water heater.

In one embodiment, the step of selecting the first theoretical corresponding relation from the pre-stored first theoretical corresponding relation set and the first actual corresponding relation to perform the first comparison, and determining the type of the smoke exhaust pipe of the gas water heater according to the first comparison result includes:

and for each type of the smoke exhaust pipe, if the first comparison result shows that the first actual corresponding relationship is consistent with the first theoretical corresponding relationship corresponding to the type of the smoke exhaust pipe, determining that the type of the smoke exhaust pipe is the type of the smoke exhaust pipe of the gas water heater.

In one embodiment, when the preset operation mode is a mode in which the gas water heater is in combustion operation, the step of obtaining an actual fan rotation speed of a fan of the gas water heater and a fan control parameter corresponding to the actual fan rotation speed according to the preset operation mode includes:

controlling the gas water heater to operate under a preset combustion load according to a preset operation mode;

and acquiring the actual fan rotating speed of the gas water heater when the gas water heater operates under the preset combustion load and fan control parameters corresponding to the actual fan rotating speed.

In one embodiment, the step of selecting an optimal fan control strategy from pre-stored fan control strategies according to an actual fan rotation speed and a fan control parameter corresponding to the actual fan rotation speed includes:

determining a second actual corresponding relation between the actual fan rotating speed and the fan control parameter according to the actual fan rotating speed and the fan control parameter corresponding to the actual fan rotating speed;

selecting a second theoretical corresponding relation from a prestored second theoretical corresponding relation set to perform second comparison with a second actual corresponding relation, and determining the type of a smoke exhaust pipe of the gas water heater according to a second comparison result; the second theoretical corresponding relation is the corresponding relation between the fan rotating speed and the fan control parameter under the preset combustion load when the gas water heater with any smoke exhaust pipe type in the actual altitude range is in a combustion working mode;

In one embodiment, the step of selecting the second theoretical corresponding relationship from the pre-stored second theoretical corresponding relationship set to perform the second comparison with the second actual corresponding relationship, and determining the type of the smoke discharge pipe of the gas water heater according to the second comparison result includes:

and aiming at each type of the smoke exhaust pipe, if the second comparison result shows that the second actual corresponding relation is consistent with the second theoretical corresponding relation corresponding to the type of the smoke exhaust pipe, determining that the type of the smoke exhaust pipe is the type of the smoke exhaust pipe of the gas water heater.

A gas water heater fan control device comprising:

the data acquisition module is used for acquiring the actual fan rotating speed of the fan of the gas water heater and fan control parameters corresponding to the actual fan rotating speed according to a preset operation mode;

the data processing module is used for selecting an optimal fan control strategy from prestored fan control strategies according to the actual fan rotating speed and the fan control parameters corresponding to the actual fan rotating speed; each fan control strategy comprises a corresponding relation between the fan rotating speed and fan control parameters when the gas water heater operates under any combustion load, wherein the gas water heater of a smoke exhaust pipe type is positioned in an altitude range; the optimal fan control strategy is a fan control strategy matched with the type of a smoke exhaust pipe of the gas water heater and the altitude of the area where the gas water heater is located;

and the control module is used for adjusting fan control parameters of the gas water heater during combustion work based on the optimal fan control strategy so as to control the rotating speed of the fan.

A gas water heater comprising: the fan and the controller are connected with the fan;

the controller is used for executing the fan control method of the gas water heater.

In one embodiment, the device further comprises an atmospheric pressure sensor connected with the controller;

the atmospheric pressure sensor is used for detecting the atmospheric pressure of the area where the gas water heater is located at present and sending the atmospheric pressure to the controller;

the controller obtains the altitude of the current area of the gas water heater according to the atmospheric pressure.

One of the above technical solutions has at least the following advantages and beneficial effects:

the method considers the influence of the type of a smoke exhaust pipe of the gas water heater and the altitude of the current area of the gas water heater on the rotating speed of the fan, selects an optimal fan control strategy from pre-stored fan control strategies to control the rotating speed of the fan by acquiring the actual fan rotating speed of the fan of the gas water heater and fan control parameters corresponding to the actual fan rotating speed under a preset mode, wherein each fan control strategy comprises that the gas water heater with the type of the smoke exhaust pipe is positioned in an altitude range, the fan rotating speed of the gas water heater when the gas water heater operates under any combustion load is in corresponding relation with the fan control parameters, and the optimal fan control strategy selected according to the actual fan rotating speed of the fan of the gas water heater and the fan control parameters corresponding to the actual fan rotating speed is a fan control strategy matched with the type of the smoke exhaust pipe of the gas water heater and the altitude of the current area of the gas water heater, the optimal fan control strategy is adopted to adjust the fan control parameters of the gas water heater during combustion operation so as to control the rotating speed of the fan, so that the air speed adjustment of the gas water heater during operation under any combustion load is more accurate, the problem of system control deviation of the gas water heater due to the influence of the type of a smoke exhaust pipe or the altitude of the environment where the gas water heater is located is avoided or reduced, the operation of the gas water heater is more adaptive to the installation environment, and the problems of incomplete combustion, vibrating combustion, high waste gas emission and the like caused by inaccurate adjustment of the air speed of the fan of the gas water heater can be solved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a flow chart illustrating a fan control method for a gas water heater according to an embodiment;

FIG. 2 is a corresponding relationship between fan speed and fan current for gas water heaters of different flue pipe types operating under the same combustion load in the same altitude range;

FIG. 3 is a corresponding relationship between fan speed and fan current for a gas water heater of the same flue gas exhaust pipe type operating at different altitudes within the same combustion load;

fig. 4 is a corresponding relationship between the fan rotation speed and the fan current when the gas water heater of the same smoke discharge pipe type operates in the same altitude range and under the same combustion load in an example in which the gas water heater is in different operation modes;

fig. 5 is a schematic flow chart illustrating steps of selecting an optimal fan control strategy from pre-stored fan control strategies when the preset operation mode is a non-combustion operation mode of the gas water heater in one embodiment;

fig. 6 is a schematic flow chart illustrating a step of acquiring an actual fan rotation speed of a fan of the gas water heater and a fan control parameter corresponding to the actual fan rotation speed when the preset operation mode is a combustion operation mode of the gas water heater in one embodiment;

fig. 7 is a schematic flowchart illustrating a step of selecting an optimal fan control strategy from pre-stored fan control strategies when the preset operation mode is a combustion operation mode of the gas water heater in one embodiment;

FIG. 8 is a block diagram showing the structure of a fan control device of a gas water heater according to an embodiment;

FIG. 9 is a block diagram of a gas water heater in one embodiment;

fig. 10 is a block diagram of a gas water heater in another embodiment.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. In addition, "connection" in the following embodiments is understood to mean "electrical connection", "communication connection", and the like if there is a transfer of electrical signals or data between the connected objects.

As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.

In one embodiment, as shown in fig. 1, there is provided a fan control method for a gas water heater, which may include:

step 202, acquiring an actual fan rotating speed of a fan of the gas water heater and a fan control parameter corresponding to the actual fan rotating speed according to a preset operation mode;

204, selecting an optimal fan control strategy from pre-stored fan control strategies according to the actual fan rotating speed and fan control parameters corresponding to the actual fan rotating speed; each fan control strategy comprises a corresponding relation between the fan rotating speed and fan control parameters when the gas water heater operates under any combustion load, wherein the gas water heater of a smoke exhaust pipe type is positioned in an altitude range; the optimal fan control strategy is a fan control strategy matched with the type of a smoke exhaust pipe of the gas water heater and the altitude of the area where the gas water heater is located;

and step 206, adjusting fan control parameters of the gas water heater during combustion work based on the optimal fan control strategy so as to control the rotating speed of the fan.

The fan control parameters can be parameters used for controlling the fan speed, such as fan current or fan voltage, the fan speed can be correspondingly adjusted by adjusting the fan control parameters, the fan speed is controlled to provide the corresponding air volume of the gas water heater under any combustion load, so that the gas water heater is maintained to execute the operation of the combustor under a good condition, the combustion load is related to the opening degree of a gas proportional valve of the gas water heater, the gas volume entering the combustor is large when the opening degree of the gas proportional valve is large, the combustion load is high, the gas volume entering the combustor is small when the opening degree of the gas proportional valve is small, and the combustion load is low; the fan control strategy is the corresponding relation between the fan rotating speed and the fan control parameter when the gas water heater operates under any gas proportional valve opening degree (namely any combustion load).

Specifically, because the type and installation environment of each gas water heater are different, for example, the type of the smoke exhaust pipe (including the length of the smoke pipe) of the gas water heater is different and the altitude of the area where the gas water heater is located is different, the condition of different wind speeds occurs when the fan is controlled by the same fan control parameter when the gas water heater is operated under any combustion load. The altitude height of the current region of gas heater is different to the influence of the pipe resistance of discharging fume of different grade type, and the tobacco pipe that the resistance is big more, and in order to guarantee that the flue gas performance is good, under the same combustion load, its fan rotational speed just need increase to and the altitude is high more, and air density is big more, thereby gas heater needs the air just more just also under same combustion load, also increases the fan rotational speed like this. Fig. 2 shows a corresponding relationship between the fan speed and the fan current when the gas water heaters of different smoke exhaust pipe types operate under the same combustion load in the same altitude range in one example, and fig. 3 shows a corresponding relationship between the fan speed and the fan current when the gas water heaters of the same smoke exhaust pipe type operate under the same combustion load in the different altitude ranges in one example. If each gas water heater adopts the same fan control strategy, control deviation of individual gas water heaters is easily caused, and therefore the problems of incomplete combustion, vibration combustion, high waste gas emission and the like of the gas water heaters are caused.

And if the installer is required to adjust the main control program of the gas water heater according to the smoke exhaust pipe type and the altitude of the gas water heater, the method is complex and low in efficiency, the problem that the program is not matched with the smoke exhaust pipe type or the altitude due to adjustment errors easily occurs, and the problem that the fan of the gas water heater is inaccurate to be adjusted is also easily caused.

Each fan control strategy prestored in the application comprises the correspondence between the fan rotating speed and the fan control parameter when the gas water heater of one smoke exhaust pipe type is positioned in an altitude range, and the fan rotating speed and the fan control parameter when the gas water heater operates under any combustion load, so that all prestored fan control strategies can comprise the correspondence between the fan rotating speed and the fan control parameter when the gas water heaters of various smoke exhaust pipe types are positioned in different altitude ranges, each fan control strategy can be obtained by collecting the fan control parameters corresponding to the fan rotating speed and the fan rotating speed when the gas water heater of a certain smoke exhaust pipe type is installed in a certain altitude range in advance and operates under any combustion load, and each obtained fan control strategy is stored in a controller of the gas water heater, so that the gas water heater can select the optimal fan control strategy from the fan control strategies according to the actual installation condition in the actual combustion use process And controlling the wind speed.

By acquiring the actual fan rotating speed of the gas water heater in the preset operation mode and the fan control parameter corresponding to the actual fan rotating speed, namely, the fan control parameters corresponding to the actual fan rotating speed and the actual fan rotating speed are compared with the corresponding relation between the fan rotating speed and the fan control parameters when the gas water heater operates under any combustion load according to the condition that the gas water heater with one smoke exhaust pipe type included in each fan control strategy is positioned in an altitude range, therefore, the fan control strategy matched with the type of the smoke exhaust pipe of the gas water heater and the altitude of the current area of the gas water heater is selected from the pre-stored fan control strategies according to the comparison result as the optimal fan control strategy, the process is equivalent to determining the type of a smoke exhaust pipe of the gas water heater and the range of the altitude of the current area of the gas water heater according to the actual fan rotating speed and the fan control parameter corresponding to the actual fan rotating speed; the optimal fan control strategy is adopted to adjust the fan control parameters of the gas water heater during combustion operation so as to control the rotating speed of the fan, and the accurate adjustment of the rotating speed of the fan can be realized.

Further, the actual fan rotating speed of the fan of the gas water heater and the fan control parameter corresponding to the actual fan rotating speed are obtained, and according to the fan control parameter corresponding to the actual fan rotating speed and the actual fan rotating speed, the process of selecting the optimal fan control strategy from the pre-stored fan control strategies can be carried out in the formal use process of the gas water heater, namely the combustion of the burner of the gas water heater and the operation of the fan, and can also be carried out before the formal use of the gas water heater, namely the burner of the gas water heater does not combust and only operates the fan, and the determination can be specifically carried out according to the operation mode of the gas water heater.

The method obtains the actual fan rotating speed of the fan of the gas water heater and the fan control parameter corresponding to the actual fan rotating speed according to the preset operation mode of the gas water heater, selects the optimal fan control strategy matched with the type of the exhaust pipe of the gas water heater and the altitude of the area where the gas water heater is currently located from the prestored fan control strategies according to the fan control parameter corresponding to the actual fan rotating speed and the actual fan rotating speed so as to adjust the rotating speed of the fan when the gas water heater operates under any combustion load, thereby overcoming the problem that the altitude of the area where the gas water heater is currently located affects the resistance of the exhaust pipes of different types and causes inaccurate control of the fan, enabling the gas water heater to be more suitable for different use areas and installation environments, and further avoiding or reducing the problem of system deviation of the gas water heater, meanwhile, the limitation of the gas water heater is reduced, and the use requirements of more region groups are met.

In one embodiment, the preset operation modes include a mode in which the gas water heater is in non-combustion operation and a mode in which the gas water heater is in combustion operation.

Specifically, the gas water heater can acquire the actual rotating speed of the fan and the fan control parameter corresponding to the actual rotating speed of the fan in a non-combustion working mode, and can also acquire the actual rotating speed of the fan and the fan control parameter corresponding to the actual rotating speed of the fan in a combustion working mode. Fig. 4 shows the correspondence between the fan rotation speed and the fan current when the gas water heater is in different operation modes and the gas water heater of the same smoke exhaust pipe type is in the same altitude range and operates under the same combustion load.

In one embodiment, as shown in fig. 5, when the preset operation mode is a non-combustion operation mode of the gas water heater, the step 204 of selecting an optimal fan control strategy from the pre-stored fan control strategies according to the actual fan rotation speed and the fan control parameter corresponding to the actual fan rotation speed may include:

step 302, determining a first actual corresponding relation between the actual fan rotating speed and a fan control parameter according to the actual fan rotating speed and the fan control parameter corresponding to the actual fan rotating speed;

step 304, determining the actual altitude range of the current area of the gas water heater based on the altitude of the current area of the gas water heater;

step 306, selecting a first theoretical corresponding relation and a first actual corresponding relation from a prestored first theoretical corresponding relation set for first comparison, and determining the type of a smoke exhaust pipe of the gas water heater according to a first comparison result; the first theoretical corresponding relation is the corresponding relation between the fan rotating speed and the fan control parameter when any smoke exhaust pipe type gas water heater in the actual altitude range is in a non-combustion working mode;

and 308, selecting the optimal fan control strategy from the fan control strategies based on the actual altitude range corresponding to the gas water heater and the type of the smoke exhaust pipe of the gas water heater.

Specifically, when the gas water heater is in a non-combustion working mode, the rotating speed of the fan can be controlled by adjusting fan control parameters (such as fan current) of the gas water heater, and a first actual corresponding relation between the actual fan rotating speed and the fan current corresponding to the actual fan rotating speed is determined according to the actual fan rotating speed and the fan current corresponding to the actual fan rotating speed by collecting the actual fan rotating speed of the gas water heater and the fan current corresponding to the actual fan rotating speed. The process of determining the first actual correspondence between the actual fan rotation speed and the fan current may be determined as the actual correspondence between the actual fan rotation speed and the fan current corresponding to each of the actual fan rotation speeds by acquiring the fan currents corresponding to the actual fan rotation speeds and according to an actual correspondence curve formed by the acquired fan currents corresponding to the actual fan rotation speeds and the actual fan rotation speeds.

And, through the altitude of the area where the gas water heater is currently located, the actual altitude range of the area where the gas water heater is currently located can be determined, specifically, the atmospheric pressure of the area where the gas water heater is currently located can be obtained by acquiring the atmospheric pressure of the area where the gas water heater is currently located, and the altitude of the area where the gas water heater is currently located can be obtained based on the atmospheric pressure, wherein the atmospheric pressure of the area where the gas water heater is currently located can be detected by the gas water heater through an atmospheric pressure sensor arranged on the body, and the atmospheric pressure of the area where the gas water heater is currently located can also be acquired in other manners, and the specific acquisition manner is not limited here, and the controller can acquire the altitude of the area where the gas water heater is currently located according to the following models under the condition that the atmospheric pressure of the area where the gas water heater is currently located is acquired:

H＝44300*(1-(P/P₀)^(1/5.256)

h is the altitude of the area where the gas water heater is located, P is the atmospheric pressure, and P is₀The pressure was adjusted to a standard atmospheric pressure (0 ℃ C., 101.325 kPa).

Under the condition of acquiring the altitude of the current area of the gas water heater, the actual altitude range of the current area of the gas water heater can be directly determined according to the altitude of the current area of the gas water heater, whether the altitude of the current area of the gas water heater is within the reference altitude range or not can be judged firstly (the reference altitude range can be set according to the actual condition), if so, the reference altitude range is determined as the actual altitude range of the current area of the gas water heater, and if not, the actual altitude range of the current area of the gas water heater is found according to the altitude of the current area of the gas water heater.

Under the condition that a first actual corresponding relation between an actual fan rotating speed and a fan control parameter and an actual altitude range of an area where the gas water heater is located are determined, the controller selects the first theoretical corresponding relation and the first actual corresponding relation from a prestored first theoretical corresponding relation set to perform first comparison, and determines the type of a smoke exhaust pipe of the gas water heater according to a first comparison result; the first theoretical corresponding relation is the corresponding relation between the fan rotating speed and the fan control parameter when any smoke exhaust pipe type gas water heater located in the actual altitude range is in a non-combustion working mode. When the first actual corresponding relation and the actual altitude range of the area where the gas water heater is located are determined, the corresponding relation between the fan rotating speed and the fan control parameter when the gas water heater with any one type of smoke exhaust pipe located in the actual altitude range is in the non-combustion working mode can be found from the pre-stored first theoretical corresponding relation set according to the actual altitude range, and the corresponding relation is compared with the first actual corresponding relation.

Therefore, under the condition of determining the type of the smoke exhaust pipe of the gas water heater and the actual altitude range corresponding to the gas water heater, the optimal fan control strategy which is matched with the type of the smoke exhaust pipe of the gas water heater and the actual altitude range corresponding to the gas water heater can be selected from the prestored fan control strategies, the optimal fan control strategy is the corresponding relation between the fan rotating speed and the fan control parameter when the gas water heater operates under any combustion load within the actual altitude range, the fan control parameter is adjusted by adopting the optimal fan control strategy, the rotating speed of the fan can be accurately controlled, the problem of system control deviation caused by the influence of the type of the smoke exhaust pipe or the altitude of the environment of the gas water heater is solved, and further the problem of incomplete combustion caused by inaccurate adjustment of the fan wind speed of the gas water heater, Vibration combustion, exhaust emission and the like.

In one embodiment, the step of selecting the first theoretical corresponding relationship from the pre-stored first theoretical corresponding relationship set and performing a first comparison with the first actual corresponding relationship, and determining the type of the smoke discharge pipe of the gas water heater according to the first comparison result may include:

Specifically, when the altitude of the area where the gas water heater is located is determined, the controller may determine, from a prestored first theoretical correspondence set, a correspondence between the fan rotation speed and the fan control parameter when the gas water heater of various smoke exhaust pipe types located within the actual altitude range is in the non-combustion working mode, select any one of the first theoretical correspondences, that is, a correspondence between the fan rotation speed and the fan control parameter when the gas water heater of any smoke exhaust pipe type located within the actual altitude range is in the non-combustion working mode, perform a first comparison on the selected first theoretical correspondence and the first actual correspondence, and if the first comparison result is that the first theoretical correspondence and the second theoretical correspondence are the same, determine that the smoke exhaust pipe type is the smoke exhaust pipe type of the gas water heater; if the first comparison result is inconsistent, switching another first theoretical corresponding relation to the first actual corresponding relation for first comparison, and if the other first theoretical corresponding relation is the corresponding relation between the fan rotating speed and the fan control parameter when the gas water heater of another smoke exhaust pipe type in the actual altitude range is in the non-combustion working mode, if the first comparison result is inconsistent, continuing switching the first theoretical corresponding relation of the remaining any smoke exhaust pipe type to the first actual corresponding relation for first comparison until the first comparison result is consistent, and determining the smoke exhaust pipe type corresponding to the corresponding first theoretical corresponding relation as the smoke exhaust pipe type of the gas water heater.

When the error between the fan rotation speed and the fan control parameter in the non-combustion operation mode of the gas water heater with any smoke exhaust pipe type in the actual altitude range, which is included in the first actual corresponding relationship and a certain first theoretical corresponding relationship, is smaller than the preset error value, it can be determined that the first actual corresponding relationship and the fan rotation speed in the non-combustion operation mode of the gas water heater with any smoke exhaust pipe type in the actual altitude range, which is included in the first theoretical corresponding relationship, are consistent, i.e., the error between the actual fan rotation speed and the fan rotation speed in the fan current in the first theoretical corresponding relationship is smaller than the preset error value, and it can be determined that the first actual corresponding relationship and the first theoretical corresponding relationship, which is included in the first theoretical corresponding relationship, are consistent between the fan rotation speed and the fan control parameter when the gas water heater with any smoke exhaust pipe type in the actual altitude range, which is included in the first theoretical corresponding relationship, and are determined as the smoke exhaust pipe type of the gas water heater The tube type.

The method comprises the steps of firstly determining a first actual corresponding relation between the actual fan rotating speed and the fan control parameter according to the actual fan rotating speed of the fan and the fan control parameter corresponding to the actual fan rotating speed, which are obtained when the gas water heater is in a non-combustion working mode, and determining the actual altitude range of the current region of the gas water heater according to the altitude of the current region of the gas water heater, so that the corresponding relation between the fan rotating speed and the fan control parameter when the gas water heater of any smoke exhaust pipe type in the actual altitude range is in the non-combustion working mode can be selected from a pre-stored first theoretical corresponding relation set according to the actual altitude range of the gas water heater, namely the first theoretical corresponding relation is compared with the first actual corresponding relation, and under the condition that the first theoretical corresponding relation is consistent with the first actual corresponding relation, the method comprises the steps of determining the type of a smoke exhaust pipe corresponding to the first theoretical correspondence as the type of the smoke exhaust pipe of the gas water heater, and selecting the optimal fan control strategy matched with the type of the smoke exhaust pipe of the gas water heater and the altitude of the current area of the gas water heater from all fan control strategies based on the actual altitude range corresponding to the gas water heater and the type of the smoke exhaust pipe of the gas water heater, so that the accuracy of fan adjustment is effectively improved, the problem of system control deviation of the gas water heater due to the influence of the type of the smoke exhaust pipe or the altitude of the current environment is avoided or reduced, the gas water heater is enabled to be more suitable for the installation environment in operation, and the problems of incomplete combustion, vibrating combustion, high waste gas emission and the like caused by inaccurate adjustment of the wind speed of the fan for the gas water heater can be further improved.

In one embodiment, as shown in fig. 6, when the preset operation mode is a combustion operation mode of the gas water heater, the step 202 of obtaining an actual fan rotation speed of a fan of the gas water heater and a fan control parameter corresponding to the actual fan rotation speed according to the preset operation mode may include:

step 402, controlling the gas water heater to operate under a preset combustion load according to a preset operation mode;

and step 404, acquiring an actual fan rotating speed when the gas water heater operates under a preset combustion load and a fan control parameter corresponding to the actual fan rotating speed.

Specifically, when the gas water heater is in a combustion working mode, the controller controls the gas water heater to operate under a preset combustion load, and the preset combustion load can be set according to actual conditions, so that the actual fan rotating speed when the gas water heater operates under the preset combustion load and fan control parameters corresponding to the actual fan rotating speed are obtained.

In one embodiment, as shown in fig. 7, the step 204 of selecting an optimal fan control strategy from pre-stored fan control strategies according to the actual fan rotation speed and the fan control parameter corresponding to the actual fan rotation speed may include:

step 502, determining a second actual corresponding relation between the actual fan rotating speed and the fan control parameter according to the actual fan rotating speed and the fan control parameter corresponding to the actual fan rotating speed;

step 504, determining the actual altitude range of the current area of the gas water heater based on the altitude of the current area of the gas water heater;

step 506, selecting a second theoretical corresponding relation from a prestored second theoretical corresponding relation set and performing second comparison with a second actual corresponding relation, and determining the type of the smoke exhaust pipe of the gas water heater according to a second comparison result; the second theoretical corresponding relation is the corresponding relation between the fan rotating speed and the fan control parameter under the preset combustion load when the gas water heater with any smoke exhaust pipe type in the actual altitude range is in a combustion working mode;

and step 508, selecting the optimal fan control strategy from the fan control strategies based on the actual altitude range corresponding to the gas water heater and the type of the smoke exhaust pipe of the gas water heater.

Specifically, similar to the case where the gas water heater is in the non-combustion operation mode, when the gas water heater is in the combustion operation mode and operates at the preset combustion load, the rotation speed of the fan may be controlled by adjusting a fan control parameter (for example, fan current) of the gas water heater, and a second actual correspondence relationship between the actual fan rotation speed and the fan current corresponding to the actual fan rotation speed is determined according to the actual fan rotation speed and the fan current corresponding to the actual fan rotation speed by collecting the actual fan rotation speed of the gas water heater and the fan current corresponding to the actual fan rotation speed. The process of determining the second actual correspondence between the actual fan speeds and the fan currents may be determined as the actual correspondence between the actual fan speeds and the fan currents corresponding to the actual fan speeds by acquiring the fan currents corresponding to the actual fan speeds and the fan currents corresponding to the actual fan speeds according to actual correspondence curves formed by the acquired actual fan speeds and the fan currents corresponding to the actual fan speeds.

And the actual altitude range of the current area of the gas water heater can be determined through the altitude of the current area of the gas water heater, specifically, the atmospheric pressure of the current area of the gas water heater can be obtained through acquiring the atmospheric pressure of the current area of the gas water heater, and the altitude of the current area of the gas water heater can be obtained based on the atmospheric pressure, wherein the gas water heater can detect the atmospheric pressure of the current area of the gas water heater through an atmospheric pressure sensor arranged on the body, and can also obtain the atmospheric pressure of the current area of the gas water heater through other modes, the specific acquisition mode is not limited here, and the altitude of the current area of the gas water heater can be obtained according to the atmospheric pressure.

Under the condition that a second actual corresponding relation between the actual fan rotating speed and the fan control parameter and the actual altitude range of the current region of the gas water heater are determined, the controller selects a second theoretical corresponding relation from a prestored second theoretical corresponding relation set to perform second comparison with the second actual corresponding relation, and determines the type of a smoke exhaust pipe of the gas water heater according to a second comparison result; the second theoretical corresponding relation is the corresponding relation between the fan rotating speed and the fan control parameter under the preset combustion load when the gas water heater with any smoke exhaust pipe type in the actual altitude range is in the combustion working mode. When the second actual corresponding relation and the actual altitude range of the current area of the gas water heater are determined, the corresponding relation between the fan rotating speed and the fan control parameter under the preset combustion load can be found out from the prestored second theoretical corresponding relation set according to the actual altitude range, and the corresponding relation between the fan rotating speed and the fan control parameter in the second theoretical corresponding relation is compared with the second actual corresponding relation when the gas water heater of any smoke exhaust pipe type in the actual altitude range is in the combustion working mode, so that the smoke exhaust pipe type of the gas water heater can be determined according to the comparison result.

Therefore, under the condition of determining the type of the smoke exhaust pipe of the gas water heater and the actual altitude range corresponding to the gas water heater, the optimal fan control strategy which is matched with the type of the smoke exhaust pipe of the gas water heater and the actual altitude range corresponding to the gas water heater can be selected from all prestored fan control strategies, the optimal fan control strategy is the corresponding relation between the fan rotating speed and the fan control parameter when the gas water heater operates under any combustion load within the actual altitude range, the fan control parameter is adjusted by adopting the optimal fan control strategy, the rotating speed of the fan can be accurately controlled, the problem of system control deviation caused by the influence of the type of the smoke exhaust pipe or the altitude of the environment of the gas water heater is solved, and further the problems of incomplete combustion, incomplete combustion and incomplete air speed adjustment of the fan of the gas water heater are solved, Vibration combustion, exhaust emission and the like.

In one embodiment, the step of selecting the second theoretical corresponding relationship from the pre-stored second theoretical corresponding relationship set to perform the second comparison with the second actual corresponding relationship, and determining the type of the smoke discharge pipe of the gas water heater according to the second comparison result may include:

Specifically, similarly to the situation when the gas water heater is in the non-combustion working mode, when the altitude of the current area of the gas water heater is determined, the controller can determine that the gas water heater with various smoke exhaust pipe types located in the actual altitude range is in the combustion working mode from the prestored second theoretical corresponding relation set, firstly select any one of the second theoretical corresponding relations from the corresponding relations between the fan rotating speed and the fan control parameter under the preset combustion load when the corresponding relation between the fan rotating speed and the fan control parameter under the preset combustion load is in the combustion working mode, namely, when the gas water heater with any one of the smoke exhaust pipe types located in the actual altitude range is in the combustion working mode, the corresponding relation between the fan rotating speed and the fan control parameter under the preset combustion load of the gas water heater is subjected to second comparison with the selected second theoretical corresponding relation and the second actual corresponding relation, if the second comparison result is that the first comparison result and the second comparison result are consistent, the type of the smoke exhaust pipe can be determined to be the type of the smoke exhaust pipe of the gas water heater; if the second comparison result is inconsistent, switching another second theoretical corresponding relation to a second actual corresponding relation for second comparison, and if the other second theoretical corresponding relation is in a combustion working mode of the gas water heater of another smoke exhaust pipe type within the actual altitude range, continuing switching the second theoretical corresponding relation of any remaining smoke exhaust pipe type to the second actual corresponding relation for second comparison until the second comparison result is consistent, and determining the smoke exhaust pipe type corresponding to the corresponding second theoretical corresponding relation as the smoke exhaust pipe type of the gas water heater.

When the second actual corresponding relation and a certain second theoretical corresponding relation comprise any one of the smoke exhaust pipe type gas water heaters which are positioned in the actual altitude range and are in a combustion working mode, and the error between the fan rotating speed of the gas water heater under the preset combustion load and the corresponding relation between the fan control parameters is smaller than the preset error value, the consistency of the two relations can be confirmed, namely, when the error between the actual fan rotating speed corresponding to any fan control parameter in the second actual corresponding relation and the fan rotating speed corresponding to the fan current in a certain second theoretical corresponding relation is smaller than the preset error value, the consistency of the corresponding relation between the fan rotating speed and the fan control parameters of the gas water heater under the preset combustion load can be confirmed, therefore, it can be confirmed that the smoke exhaust pipe type corresponding to the second theoretical correspondence is determined as the smoke exhaust pipe type of the gas water heater.

In one embodiment, after the fan control parameter of the gas water heater during combustion operation is adjusted based on the optimal fan control strategy to control the rotation speed of the fan, the optimal fan control strategy selected when the gas water heater is in a combustion operating state or in a non-combustion operating mode can be verified to verify whether the optimal fan control strategy is accurate. The specific verification process is as follows:

controlling the gas water heater to be respectively at the maximum combustion load (namely, the opening of the gas proportional valve is maximum) and the minimum combustion load (namely, the opening of the gas proportional valve is minimum), and acquiring fan control parameters corresponding to the rotating speed of the fan when the gas water heater is at the maximum combustion load operation (or controlling the gas water heater to be respectively at a plurality of combustion loads and acquiring corresponding data), thereby acquiring the corresponding relation between the rotating speed of the fan when the gas water heater is at the maximum combustion load operation and the fan control parameters, and acquiring the fan control parameters corresponding to the rotating speed of the fan when the gas water heater is at the maximum combustion load operation and the rotating speed of the fan when the gas water heater is at the minimum combustion load operation, acquiring the corresponding relation between the rotating speed of the fan when the gas water heater is at the minimum combustion load operation and the fan control parameters, and acquiring the corresponding relation between the rotating speed of the fan when the gas water heater is at the maximum combustion load operation and the fan control parameters, comparing the corresponding relation between the fan rotating speed and the fan control parameter when the gas water heater operates under the maximum combustion load in the optimal fan control strategy selected when the gas water heater is in the non-combustion operation mode or the gas water heater operates in the combustion operation mode, comparing the corresponding relation between the fan rotating speed and the fan control parameter when the gas water heater operates under the minimum combustion load with the corresponding relation between the fan rotating speed and the fan control parameter when the gas water heater operates under the minimum combustion load in the optimal fan control strategy selected when the gas water heater operates in the non-combustion operation mode or the gas water heater operates in the combustion operation mode, if the similarity of the two is within the preset range, verifying that the optimal fan control strategy is accurate, and storing the optimal fan control strategy by the controller and exiting the verification program, therefore, the accuracy of controlling the rotating speed of the fan when the gas water heater works in a combustion mode is further improved. If the similarity of the two fan control strategies is not in the preset range in the comparison result, the optimal fan control strategy is reselected, if the comparison frequency exceeds the preset frequency, the controller outputs alarm information and indicates the display to give an alarm for reminding, so that the installer can detect whether the type of the smoke exhaust pipe of the installed gas water heater does not exist in the types of the smoke exhaust pipes contained in the pre-stored fan control strategies or the installation length exceeds the nominal maximum length and the like.

In the above, according to the actual fan rotating speed of the fan of the gas water heater and the fan control parameter corresponding to the actual fan rotating speed, which are obtained by the gas water heater in the preset operation mode, the fan control strategy matched with the type of the smoke exhaust pipe of the gas water heater and the altitude of the current area where the gas water heater is located is selected from the pre-stored fan control strategies as the optimal fan control strategy, each fan control strategy comprises that the gas water heater with one type of smoke exhaust pipe is located in an altitude range, the corresponding relation between the fan rotating speed and the fan control parameter when the gas water heater operates under any combustion load, the gas water heater adopts the optimal fan control strategy to adjust the fan control parameter, the rotating speed of the fan can be adjusted more accurately, and the influence of the altitude of the area where the gas water heater is located on the resistance of the smoke exhaust pipes of different types is overcome, make gas heater be adapted to different use area and installation environment more, thereby avoid or reduce the problem that gas heater system deviation appears, reduce the limitation that gas heater used, satisfy more region crowds' user demand, simultaneously through accurate control fan rotational speed, also can further solve gas heater burning incompletely, vibrations burning and exhaust emission are high problem, and after selecting best fan control strategy, still verify the control accuracy of best fan control strategy, thereby further guaranteed the accuracy of the fan rotational speed control to gas heater.

It should be understood that, although the steps in the flowcharts related to the embodiments as described above are sequentially displayed as indicated by arrows, the steps are not necessarily performed sequentially as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in the flowcharts related to the embodiments described above may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the execution order of the steps or stages is not necessarily sequential, but may be rotated or alternated with other steps or at least a part of the steps or stages in other steps.

Based on the same inventive concept, the embodiment of the application also provides a fan control device of the gas water heater, which is used for realizing the fan control method of the gas water heater. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the method, so the specific limitations in one or more embodiments of the fan control device for the gas water heater provided below can be referred to the limitations on the fan control method for the gas water heater in the above, and are not described again here.

In one embodiment, as shown in fig. 8, there is provided a fan control device for a gas water heater, which may include:

the data acquisition module 110 is configured to acquire an actual fan rotation speed of a fan of the gas water heater and a fan control parameter corresponding to the actual fan rotation speed according to a preset operation mode;

the data processing module 120 is configured to select an optimal fan control strategy from pre-stored fan control strategies according to the actual fan rotation speed and a fan control parameter corresponding to the actual fan rotation speed; each fan control strategy comprises a corresponding relation between the fan rotating speed and fan control parameters when the gas water heater operates under any combustion load, wherein the gas water heater of a smoke exhaust pipe type is positioned in an altitude range; the optimal fan control strategy is a fan control strategy matched with the type of a smoke exhaust pipe of the gas water heater and the altitude of the area where the gas water heater is located;

and the control module 130 is configured to adjust a fan control parameter of the gas water heater during combustion operation based on the optimal fan control strategy, so as to control a rotation speed of the fan.

In one embodiment, when the preset operation mode is a non-combustion operation mode of the gas water heater, the data processing module 120 is further configured to determine a first actual correspondence between the actual fan rotation speed and the fan control parameter according to the actual fan rotation speed and the fan control parameter corresponding to the actual fan rotation speed; determining the actual altitude range of the current region of the gas water heater based on the altitude of the current region of the gas water heater; selecting a first theoretical corresponding relation and a first actual corresponding relation from a prestored first theoretical corresponding relation set for first comparison, and determining the type of a smoke exhaust pipe of the gas water heater according to a first comparison result; the first theoretical corresponding relation is the corresponding relation between the fan rotating speed and the fan control parameter when any smoke exhaust pipe type gas water heater in the actual altitude range is in a non-combustion working mode; and selecting the optimal fan control strategy from the fan control strategies based on the actual altitude range corresponding to the gas water heater and the type of the smoke exhaust pipe of the gas water heater.

In one embodiment, the data processing module 120 is further configured to determine, for each smoke exhaust pipe type, that the smoke exhaust pipe type is the smoke exhaust pipe type of the gas water heater if the first comparison result indicates that the first actual corresponding relationship is consistent with the first theoretical corresponding relationship corresponding to the smoke exhaust pipe type.

In one embodiment, when the preset operation mode is a combustion operation mode of the gas water heater, the data acquisition module 110 is further configured to control the gas water heater to operate under a preset combustion load according to the preset operation mode; and acquiring the actual fan rotating speed when the gas water heater operates under the preset combustion load and fan control parameters corresponding to the actual fan rotating speed.

In one embodiment, the data processing module 120 is further configured to determine a second actual correspondence between the actual fan rotation speed and the fan control parameter according to the actual fan rotation speed and the fan control parameter corresponding to the actual fan rotation speed; determining the actual altitude range of the current region of the gas water heater based on the altitude of the current region of the gas water heater; selecting a second theoretical corresponding relation from a prestored second theoretical corresponding relation set to perform second comparison with a second actual corresponding relation, and determining the type of a smoke exhaust pipe of the gas water heater according to a second comparison result; the second theoretical corresponding relation is the corresponding relation between the fan rotating speed and the fan control parameter under the preset combustion load when the gas water heater with any smoke exhaust pipe type in the actual altitude range is in a combustion working mode; and selecting the optimal fan control strategy from the fan control strategies based on the actual altitude range corresponding to the gas water heater and the type of the smoke exhaust pipe of the gas water heater.

In one embodiment, the data processing module 120 is further configured to determine, for each smoke exhaust pipe type, that the smoke exhaust pipe type is the smoke exhaust pipe type of the gas water heater if the second comparison result indicates that the second actual corresponding relationship is consistent with the second theoretical corresponding relationship corresponding to the smoke exhaust pipe type.

All or part of the modules in the fan control device of the gas water heater can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.

In one embodiment, as shown in fig. 9, there is provided a gas water heater, which may include: the fan and the controller are connected with the fan;

The gas water heater can select the optimal fan control strategy matched with the current installation environment from the prestored fan control strategies, the fan control parameters are adjusted, the altitude range of the current region is considered by the optimal fan control strategy, and the type of the smoke exhaust pipe of the gas water heater, so that the rotating speed of the fan can be accurately controlled by adjusting the fan control parameters by adopting the optimal fan control strategy, the problem of system control deviation of the gas water heater is avoided or reduced, and the problems of incomplete combustion, vibration combustion, high waste gas emission and the like of the gas water heater can be improved.

In one embodiment, as shown in fig. 10, the gas water heater may further include an atmospheric pressure sensor connected to the controller;

Specifically, the atmospheric pressure sensor detects the atmospheric pressure of the area where the water heater is located currently, and sends the detected atmospheric pressure data to the controller, and the controller obtains the altitude of the area where the gas water heater is located currently according to the atmospheric pressure, and the specific processing procedure is as follows:

H＝44300*(1-(P/P₀)^(1/5.256)

According to the actual altitude range of the current region of the gas water heater determined according to the altitude of the current region of the gas water heater and the actual corresponding relation determined according to the actual fan rotating speed and the fan control parameters corresponding to the actual fan rotating speed, the optimal fan control strategy which is matched with the type of the smoke exhaust pipe of the gas water heater and the altitude of the current region of the gas water heater can be selected from all fan control strategies.

Above, the gas heater of this application can overcome the influence of gas heater place height above sea level to the different grade type pipe resistance of discharging fume, has effectively improved the accuracy to fan wind speed control, and then can improve gas heater incomplete combustion, vibrations burning and exhaust emission scheduling problem. And the gas heater of this application can adapt to different use area and installation environment to can avoid gas heater the problem of system's deviation to appear, the limitation of the use of the gas heater of this application is little simultaneously, can satisfy more regional crowds' user demand.

In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.

In an embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, carries out the steps in the method embodiments described above.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, databases, or other media used in the embodiments provided herein can include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high-density embedded nonvolatile Memory, resistive Random Access Memory (ReRAM), Magnetic Random Access Memory (MRAM), Ferroelectric Random Access Memory (FRAM), Phase Change Memory (PCM), graphene Memory, and the like. Volatile Memory can include Random Access Memory (RAM), external cache Memory, and the like. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), for example. The databases referred to in various embodiments provided herein may include at least one of relational and non-relational databases. The non-relational database may include, but is not limited to, a block chain based distributed database, and the like. The processors referred to in the various embodiments provided herein may be, without limitation, general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, or the like.

In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.

All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A fan control method for a gas water heater is characterized by comprising the following steps:

selecting an optimal fan control strategy from pre-stored fan control strategies according to the actual fan rotating speed and fan control parameters corresponding to the actual fan rotating speed; each fan control strategy comprises a corresponding relation between the fan rotating speed and the fan control parameter when the gas water heater operates under any combustion load, wherein the gas water heater of a smoke exhaust pipe type is positioned in an altitude range; the optimal fan control strategy is a fan control strategy matched with the type of a smoke exhaust pipe of the gas water heater and the altitude of the area where the gas water heater is located;

2. The gas water heater blower control method according to claim 1, wherein the preset operation modes include a mode in which the gas water heater is in a non-combustion operation, and a mode in which the gas water heater is in a combustion operation.

3. The fan control method of the gas water heater according to claim 2, wherein when the preset operation mode is a non-combustion operation mode of the gas water heater, the step of selecting an optimal fan control strategy from pre-stored fan control strategies according to the actual fan rotation speed and the fan control parameters corresponding to the actual fan rotation speed comprises:

selecting a first theoretical corresponding relation from a prestored first theoretical corresponding relation set and carrying out first comparison on the first theoretical corresponding relation and the first actual corresponding relation, and determining the type of a smoke exhaust pipe of the gas water heater according to a first comparison result; the first theoretical corresponding relation is the corresponding relation between the fan rotating speed and the fan control parameter when any smoke exhaust pipe type gas water heater located in the actual altitude range is in a non-combustion working mode;

4. The fan control method of the gas water heater according to claim 3, wherein the step of selecting a first theoretical correspondence from a set of prestored first theoretical correspondences and the first actual correspondence for first comparison, and determining the type of the smoke discharge pipe of the gas water heater according to a first comparison result comprises:

5. The method for controlling the fan of the gas water heater according to claim 2, wherein when the preset operation mode is a combustion operation mode of the gas water heater, the step of obtaining an actual fan rotation speed of the fan of the gas water heater and a fan control parameter corresponding to the actual fan rotation speed according to the preset operation mode includes:

controlling the gas water heater to operate under a preset combustion load according to the preset operation mode;

6. The fan control method of the gas water heater according to claim 5, wherein the step of selecting an optimal fan control strategy from pre-stored fan control strategies according to the actual fan rotation speed and the fan control parameters corresponding to the actual fan rotation speed comprises:

determining the actual altitude range of the current area of the gas water heater based on the altitude of the current area of the gas water heater;

selecting a second theoretical corresponding relation from a prestored second theoretical corresponding relation set and carrying out second comparison with the second actual corresponding relation, and determining the type of the smoke exhaust pipe of the gas water heater according to a second comparison result; the second theoretical correspondence is a correspondence between the fan rotation speed and the fan control parameter under the preset combustion load when the gas water heater of any smoke exhaust pipe type within the actual altitude range is in a combustion working mode;

7. The fan control method for the gas water heater according to claim 6, wherein the step of selecting a second theoretical correspondence from a set of prestored second theoretical correspondences to perform a second comparison with the second actual correspondence, and determining the type of the smoke discharge pipe of the gas water heater according to a second comparison result comprises:

and for each type of the smoke exhaust pipe, if the second comparison result shows that the second actual corresponding relationship is consistent with the second theoretical corresponding relationship corresponding to the type of the smoke exhaust pipe, determining that the type of the smoke exhaust pipe is the type of the smoke exhaust pipe of the gas water heater.

8. The utility model provides a gas heater fan controlling means which characterized in that includes:

the data processing module is used for selecting an optimal fan control strategy from prestored fan control strategies according to the actual fan rotating speed and the fan control parameters corresponding to the actual fan rotating speed; each fan control strategy comprises a corresponding relation between the fan rotating speed and the fan control parameter when the gas water heater operates under any combustion load, wherein the gas water heater of a smoke exhaust pipe type is positioned in an altitude range; the optimal fan control strategy is a fan control strategy matched with the type of a smoke exhaust pipe of the gas water heater and the altitude of the area where the gas water heater is located;

9. A gas water heater, comprising: the fan and the controller are connected with the fan;

the controller is used for executing the fan control method of the gas water heater in any one of claims 1 to 7.

10. The gas water heater of claim 9, further comprising an atmospheric pressure sensor connected to the controller;

the atmospheric pressure sensor is used for detecting the atmospheric pressure of the area where the gas water heater is located currently and sending the atmospheric pressure to the controller;

and the controller obtains the altitude of the current area of the gas water heater according to the atmospheric pressure.