CN112556204B - Safety control method and device for gas water heater and gas water heater - Google Patents
Safety control method and device for gas water heater and gas water heater Download PDFInfo
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- CN112556204B CN112556204B CN202011473847.3A CN202011473847A CN112556204B CN 112556204 B CN112556204 B CN 112556204B CN 202011473847 A CN202011473847 A CN 202011473847A CN 112556204 B CN112556204 B CN 112556204B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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Abstract
The application relates to a safety control method and device of a gas water heater and the gas water heater. The method comprises the following steps: when the gas water heater is detected to meet the preset normal operation condition, the first fan rotating speed and the first air volume coefficient of the fan of the gas water heater in the normal operation process are acquired in real time. And judging whether the gas water heater meets the fault protection condition or not according to the rotating speed of the first fan and the first air volume coefficient. And when the fault protection condition is determined to be met, controlling a gas proportional valve of the gas water heater to be closed. By adopting the method, whether the gas water heater breaks down or not can be determined in time according to the first fan rotating speed and the first air volume coefficient of the fan of the gas water heater, and the original feedback needle structure is not required to be adjusted to detect the combustion condition of the combustor. When the fault of the gas water heater is determined, the gas proportional valve of the gas water heater is controlled to be closed in time, gas supply is cut off, the situation that smoke flows backward and flame overflows is avoided, and the safety performance of the gas water heater in the using process is improved.
Description
Technical Field
The application relates to the technical field of electric appliance control, in particular to a safety control method and device of a gas water heater and the gas water heater.
Background
With the development of electrical control technology and the wide application of various electrical equipment in life and work of people, people pay more and more attention to the safety performance of the electrical equipment in practical application. For example, in a common gas water heater, under normal operation, gas is sprayed into the fire exhaust fins through the gas proportional valve and the nozzles on the segmented valve assembly, the gas is ignited by pulse discharge at the fire hole of the combustor to form stable flame, the gas is completely combusted in the combustion chamber to generate high-temperature flue gas, and the high-temperature flue gas flows through the heat exchanger and then is exhausted from the exhaust port through the direct current fan. However, when the flue gas pipeline of the water heater is blocked, the direct current fan running at a high rotating speed can adaptively improve the rotating speed of the direct current fan, and the flue gas cannot be discharged in time because the exhaust pipeline is blocked, the smoke exhaust area is reduced, and meanwhile, the rotating speed of the fan is increased, and the air volume coefficient is increased. And part of the flue gas which is not discharged in time flows back to the interior of the water heater, part of the flue gas which is sprayed to the fire discharging piece from the nozzle and is not burnt yet is taken away, and meanwhile, the flue gas is ignited when passing through the fire hole, so that the flame overflow phenomenon occurs.
The existing gas water heater mostly adopts a single feedback needle to detect the combustion condition of a single burner. However, when the water heater generates a flame overflow phenomenon, the conventional single feedback needle cannot accurately detect a combustion signal due to the fact that the conventional single feedback needle is only used for the combustion condition of a single burner, so that flame information cannot be fed back in time, a gas passage of the burner is correspondingly closed, the normal use of the gas water heater is affected, and potential safety hazards exist in the use process.
Disclosure of Invention
In view of the above, it is necessary to provide a safety control method and device for a gas water heater, and a gas water heater, which can improve the safety performance of the gas water heater during use.
A method of safety control of a gas water heater, the method comprising:
when the gas water heater is detected to meet the preset normal operation condition, acquiring a first fan rotating speed and a first air volume coefficient of a fan of the gas water heater in the normal operation process in real time;
judging whether the gas water heater meets fault protection conditions or not according to the first fan rotating speed and the first air volume coefficient;
and when the fault protection condition is determined to be met, controlling a gas proportional valve of the gas water heater to be closed.
In one embodiment, the determining the first air volume coefficient includes:
and determining a first air volume coefficient of the fan according to the total energy of the fan, the mechanical energy of the fan in rotation and the internal energy consumed by the fan in heating in the normal operation process of the gas water heater.
In one embodiment, the determining whether the gas water heater meets the fault protection condition according to the first fan speed and the first air volume coefficient includes:
determining an air volume coefficient abrupt change corresponding to the first air volume coefficient according to the lifting degree of the rotating speed of the first fan;
and judging whether the gas water heater meets fault protection conditions or not according to the sudden variable of the air volume coefficient.
In one embodiment, the determining whether the gas water heater meets the fault protection condition according to the sudden change of the air volume coefficient includes:
acquiring a preset mutation amount threshold corresponding to the air volume coefficient mutation amount;
comparing the preset mutation threshold with the air volume coefficient mutation;
and when the air volume coefficient mutation is determined to be larger than the preset mutation threshold, determining that the gas water heater meets the fault protection condition.
In one embodiment, the determining whether the gas water heater meets a fault protection condition according to the sudden change of the air volume coefficient further includes:
when the air volume coefficient mutation is determined to be smaller than the preset mutation threshold, the current fan rotating speed of the gas water heater is collected again;
comparing the current fan rotating speed with a corresponding preset rotating speed threshold;
and when the current fan rotating speed is determined to be greater than the preset rotating speed threshold value, determining that the gas water heater meets the fault protection condition.
In one embodiment, before the acquiring the fan speed and the air volume coefficient of the gas water heater during normal operation when it is detected that the gas water heater meets the preset normal operation condition, the method further includes:
acquiring a starting instruction aiming at the gas water heater;
responding to the starting instruction, and controlling the gas water heater to start;
controlling a fan of the gas water heater to perform self-cleaning within a preset cleaning time period;
and judging whether the self-cleaned gas water heater meets a preset normal operation condition or not.
In one embodiment, the determining whether the self-cleaned gas water heater meets a preset normal operation condition includes:
acquiring a second fan rotating speed and a second air volume coefficient of the self-cleaned gas water heater;
acquiring a preset air volume coefficient threshold corresponding to the second air volume coefficient;
and judging whether the second fan rotating speed and the second air volume coefficient of the gas water heater meet preset normal operation conditions or not according to the preset rotating speed threshold and the preset air volume coefficient threshold.
In one embodiment, the determining whether the second fan speed and the second air volume coefficient of the gas water heater satisfy preset normal operation conditions according to the preset speed threshold and the preset air volume coefficient threshold includes:
comparing the second fan rotating speed and the second air volume coefficient with the preset rotating speed threshold value and the preset air volume coefficient threshold value respectively;
and when the second fan rotating speed is determined to be greater than the preset rotating speed threshold value and the second air volume coefficient is determined to be greater than the preset air volume coefficient threshold value, determining that the second fan rotating speed and the second air volume coefficient of the gas water heater meet preset normal operation conditions.
In one embodiment, the method further comprises:
and when the second fan rotating speed is detected to be smaller than the preset rotating speed threshold value or the second air volume coefficient is detected to be smaller than the preset air volume coefficient threshold value, determining that the gas water heater meets the fault protection condition.
In one embodiment, said controlling the gas proportional valve of the gas water heater to close when it is determined that the fault protection condition is satisfied comprises:
and when the condition that the fault protection condition is met is determined, generating a corresponding wind pressure fault signal, controlling the closing of a gas proportional valve of the gas water heater according to the wind pressure fault signal, and displaying the wind pressure fault signal on a display panel of the gas water heater.
A safety control device for a gas water heater, the device comprising:
the acquisition module is used for acquiring a first fan rotating speed and a first air volume coefficient of a fan in the normal operation process of the gas water heater in real time when the gas water heater is detected to meet the preset normal operation condition;
the fault protection condition judgment module is used for judging whether the gas water heater meets a fault protection condition or not according to the first fan rotating speed and the first air volume coefficient;
and the gas proportional valve control module is used for controlling the closing of a gas proportional valve of the gas water heater when the fault protection condition is determined to be met.
A gas water heater comprises a gas water heater main body, and a fan, a gas proportional valve, a display screen, a memory and a processor which are arranged on the gas water heater main body, wherein the fan, the gas proportional valve and the display screen are connected with the processor; the memory stores a computer program that when executed by the processor performs the steps of:
when the gas water heater is detected to meet the preset normal operation condition, acquiring a first fan rotating speed and a first air volume coefficient of a fan of the gas water heater in the normal operation process in real time;
judging whether the gas water heater meets fault protection conditions or not according to the first fan rotating speed and the first air volume coefficient;
and when the fault protection condition is determined to be met, controlling a gas proportional valve of the gas water heater to be closed.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
when the gas water heater is detected to meet a preset normal operation condition, acquiring a first fan rotating speed and a first air volume coefficient of a fan of the gas water heater in a normal operation process in real time;
judging whether the gas water heater meets fault protection conditions or not according to the first fan rotating speed and the first air volume coefficient;
and when the fault protection condition is determined to be met, controlling a gas proportional valve of the gas water heater to be closed.
According to the safety control method and device for the gas water heater and the gas water heater, when the gas water heater is detected to meet the preset normal operation condition, the first fan rotating speed and the first air volume coefficient of the fan of the gas water heater in the normal operation process are obtained in real time, and whether the gas water heater meets the fault protection condition or not is judged according to the first fan rotating speed and the first air volume coefficient. And when the fault protection condition is determined to be met, controlling a gas proportional valve of the gas water heater to be closed. The method and the device have the advantages that whether the gas water heater breaks down or not can be timely determined according to the first fan rotating speed and the first air volume coefficient of the fan of the gas water heater, and the original feedback needle structure is not required to be adjusted to detect the combustion condition of the combustor. When the fault of the gas water heater is determined, the gas proportional valve of the gas water heater is controlled to be closed in time, gas supply is cut off, the situation that smoke flows backwards and flame overflows outside is avoided, and the safety performance of the gas water heater in the using process is improved.
Drawings
FIG. 1 is a schematic flow chart of a safety control method for a gas water heater according to an embodiment;
FIG. 2 is a schematic structural diagram of a gas water heater in one embodiment;
FIG. 3 is a schematic flow chart of a safety control method for a gas water heater according to another embodiment;
FIG. 4 is a block diagram of a safety control device of a gas water heater according to an embodiment;
FIG. 5 is an internal structural view of a gas water heater in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, as shown in fig. 1, a safety control method for a gas water heater is provided, and this embodiment is illustrated by applying this method to a gas water heater, it is to be understood that this method may also be applied to a server, and may also be applied to a system including a gas water heater and a server, and is implemented by interaction between the gas water heater and the server. In this embodiment, the method specifically includes the following steps:
and S102, when the gas water heater is detected to meet the preset normal operation condition, acquiring a first fan rotating speed and a first air volume coefficient of a fan of the gas water heater in the normal operation process in real time.
Specifically, a starting instruction of a user for the gas water heater is obtained, the starting instruction is responded, the gas water heater is controlled to be started, a fan of the gas water heater is controlled to perform self-cleaning within a preset cleaning time period, and whether the self-cleaned gas water heater meets preset normal operation conditions or not is judged. When the fact that the self-cleaned gas water heater meets the preset normal operation condition is determined, a first fan rotating speed and a first air volume coefficient of a fan of the gas water heater in the normal operation process are obtained in real time.
Wherein, the display panel to gas heater's start-up instruction accessible gas heater triggers, triggers including the touch key that clicks setting up on the display panel, or triggers through the button that predetermines on the gas heater shell, still can trigger corresponding start-up instruction through the terminal equipment who is connected with gas heater to send to gas heater through terminal equipment. The system comprises a gas water heater, a wind pressure fault self-checking module, a self-checking module and a control module, wherein the wind pressure fault self-checking module is used for carrying out wind pressure fault self-checking before the gas water heater operates and is provided with a corresponding self-checking period, and the wind pressure fault self-checking module is used for carrying out wind pressure fault self-checking in the self-checking period so as to ensure the safety of the operation environment of the gas water heater.
Further, after the gas water heater is started, the fan of the gas water heater is controlled to perform self-cleaning for several seconds at a high rotating speed, residual smoke in the gas water heater is discharged, whether the gas water heater subjected to self-cleaning has the problem of flue blockage is further judged, and whether the gas water heater subjected to self-cleaning meets preset normal operation conditions is judged. When the problem that the flue of the gas water heater is blocked after self-cleaning is determined, a wind pressure fault signal is generated, and wind pressure fault information is displayed on a display panel of the gas water heater to remind a user.
In one embodiment, the determining the first air volume coefficient specifically includes:
and determining a first air volume coefficient of the fan according to the total energy of the fan, the mechanical energy of the fan in rotation and the internal energy consumed by the fan in heating in the normal operation process of the gas water heater.
Specifically, a fan air volume model is constructed by acquiring the total energy of a fan, the mechanical energy of the rotation of the fan and the internal energy consumed by the heating of the fan in the normal operation process of the gas water heater, and according to the total energy of the fan, the mechanical energy of the rotation of the fan and the internal energy consumed by the heating of the fan in the normal operation process of the gas water heater, based on the law of energy conservation, so as to determine a first air volume coefficient of the fan.
The method comprises the following steps of (1) constructing a fan air volume model by adopting the following formula:
Ew＝Es-Ek-Er；
wherein E issTotal energy of fan of gas water heater, EkMechanical energy for rotation of the fan, ErInternal energy consumed for heating of fan, EwIs the first air quantity coefficient of the fan.
And further, constructing and obtaining an air quantity coefficient model according to the fan rotating speed and the current of the fan of the gas water heater. On the basis of a fan air quantity model, dividing the rotating speed of a fan and the external wind resistance into a plurality of grades from low to high respectively, taking test sample points according to average intervals, testing the rotating speed and current of the fan under each sample point, and carrying out simulation analysis on the test result by using MATLAB software to obtain a corresponding air quantity coefficient prediction result.
And step S104, judging whether the gas water heater meets the fault protection condition or not according to the first fan rotating speed and the first air volume coefficient.
Specifically, according to the lifting degree of the rotating speed of the first fan, an air volume coefficient abrupt variable corresponding to the first air volume coefficient is determined, and whether the gas water heater meets the fault protection condition or not is judged according to the air volume coefficient abrupt variable.
When the external wind pressure is increased or the flue is blocked, the rotating speed of the first fan is increased in a curve mode, the first air volume coefficient is changed, and the air volume coefficient mutation corresponding to the first air volume coefficient can be determined according to the increasing degree of the rotating speed of the first fan.
Further, according to the abrupt change of the air volume coefficient, the step of judging whether the gas water heater meets the fault protection condition specifically comprises:
acquiring a preset mutation threshold corresponding to the air volume coefficient mutation, and comparing the preset mutation threshold with the air volume coefficient mutation; and when the sudden change of the air volume coefficient is larger than a preset sudden change threshold value, determining that the gas water heater meets the fault protection condition.
Specifically, a preset sudden change threshold value is compared with an air volume coefficient sudden change, and when the air volume coefficient sudden change is larger than the preset sudden change threshold value, it is determined that the gas water heater meets a fault protection condition. And when the sudden change of the air volume coefficient is smaller than or equal to the preset sudden change threshold, the sudden change of the current air volume coefficient is caused by the change of external environment data, and in order to avoid the situation of error protection, the current fan rotating speed of the gas water heater needs to be collected again for further judgment.
Further, when the sudden change of the air volume coefficient is smaller than the preset sudden change threshold value, the current fan rotating speed of the gas water heater is collected again, and the current fan rotating speed is compared with the corresponding preset rotating speed threshold value. And when the current fan rotating speed is determined to be greater than the preset rotating speed threshold value, determining that the gas water heater meets the fault protection condition. When the air volume coefficient mutation is smaller than the preset mutation threshold and the newly acquired current fan rotating speed of the gas water heater is also smaller than the preset rotating speed threshold, the gas water heater is not required to be started for fault protection.
And acquiring a preset acquisition period when the sudden change of the air volume coefficient is smaller than a preset sudden change threshold, and acquiring the current fan rotating speed of the gas water heater again in the preset acquisition period. The sudden change of the air volume coefficient is smaller than a preset sudden change threshold value, the current fan rotating speed of the gas water heater is further collected again, when the current fan rotating speed is larger than the preset rotating speed threshold value, it is indicated that the external environment of the gas water heater is abnormal, the fan rotating speed is changed, the gas water heater possibly has the danger of flame overflow, and the gas proportional valve needs to be controlled to be closed quickly to cut off gas supply. And the length of the preset acquisition period is smaller than the self-checking period of the gas water heater before the gas water heater is started to heat.
And S106, controlling a gas proportional valve of the gas water heater to be closed when the fault protection condition is determined to be met.
Specifically, when the gas water heater is determined to meet the fault protection condition, a corresponding wind pressure fault signal is generated, the gas proportional valve of the gas water heater is controlled to be closed according to the wind pressure fault signal, and the wind pressure fault signal is displayed on a display panel of the gas water heater.
When the air volume coefficient sudden change is larger than the preset sudden change threshold value or the air volume coefficient sudden change is smaller than the preset sudden change threshold value, but the current fan rotating speed is larger than the preset rotating speed threshold value, the fact that the gas water heater meets the fault protection condition is indicated, a corresponding air pressure fault signal is generated, a gas proportional valve of the gas water heater is controlled to be closed according to the air pressure fault signal, gas supply is cut off, and the phenomenon that unburned gas is taken away by smoke flowing backwards to the combustor and flame overflow occurs on fire is avoided. Meanwhile, the wind pressure fault signal is required to be displayed on a display panel of the gas water heater so as to prompt a user.
According to the safety control method of the gas water heater, when the gas water heater is detected to meet the preset normal operation condition, the first fan rotating speed and the first air volume coefficient of the fan of the gas water heater in the normal operation process are obtained in real time, and whether the gas water heater meets the fault protection condition or not is judged according to the first fan rotating speed and the first air volume coefficient. And when the fault protection condition is determined to be met, controlling a gas proportional valve of the gas water heater to be closed. The method and the device have the advantages that whether the gas water heater breaks down or not can be timely determined according to the first fan rotating speed and the first air volume coefficient of the fan of the gas water heater, and the original feedback needle structure is not required to be adjusted to detect the combustion condition of the combustor. When the fault of the gas water heater is determined, the gas proportional valve of the gas water heater is controlled to be closed in time, gas supply is cut off, the situation that smoke flows backward and flame overflows is avoided, and the safety performance of the gas water heater in the using process is improved.
In one embodiment, the determining whether the self-cleaned gas water heater meets the preset normal operation condition specifically includes:
acquiring a second fan rotating speed and a second air volume coefficient of the self-cleaned gas water heater; acquiring a preset air volume coefficient threshold corresponding to the second air volume coefficient; and judging whether the second fan rotating speed and the second air volume coefficient of the gas water heater meet preset normal operation conditions or not according to a preset rotating speed threshold and a preset air volume coefficient threshold.
Specifically, the second fan rotating speed of the gas water heater after self-cleaning is obtained, the corresponding preset rotating speed threshold value is obtained, the second air volume coefficient of the gas water heater after self-cleaning is obtained, the corresponding preset air volume coefficient threshold value is obtained, the second fan rotating speed and the preset rotating speed threshold value are compared, the second air volume coefficient and the preset air volume coefficient threshold value are compared, a corresponding comparison result is generated, and whether the second fan rotating speed and the second air volume coefficient of the gas water heater meet the preset normal operation condition or not is determined according to the comparison result.
And further, when the second fan rotating speed is determined to be greater than the preset rotating speed threshold value and the second air volume coefficient is determined to be greater than the preset air volume coefficient threshold value, determining that the second fan rotating speed and the second air volume coefficient of the gas water heater meet the preset normal operation condition. And when the second fan rotating speed is detected to be smaller than the preset rotating speed threshold value or the second air volume coefficient is detected to be smaller than the preset air volume coefficient threshold value, the second fan rotating speed and the second air volume coefficient of the gas water heater do not meet the preset normal operation condition, namely the current gas water heater meets the fault protection condition, a corresponding air pressure fault signal needs to be generated, and the air pressure fault information is displayed on a display panel of the gas water heater to remind a user.
In this embodiment, whether the second fan rotation speed and the second air volume coefficient of the gas water heater satisfy the preset normal operation condition is determined by acquiring the second fan rotation speed and the second air volume coefficient of the self-cleaned gas water heater and according to the preset rotation speed threshold value and the preset air volume coefficient threshold value. The flue gas that remains of gas heater cleans earlier before formal operation heating to whether in time determine to satisfy and predetermine normal operating condition the second fan rotational speed and the second air volume coefficient of gas heater after cleaning, avoided starting gas heater under the unable normal operating's of flue jam condition and heat, and then promoted the security performance of gas heater in the use.
In one embodiment, as shown in fig. 2, a gas water heater is provided, and as can be seen from fig. 2, the gas water heater specifically includes a dc brushless fan 202, a heat exchanger 204, a burner 206, a gas proportional valve 208, a water outlet joint 210, a water inlet joint 212, a gas inlet joint 214, a flow sensor 216, and a controller 218, wherein:
the direct current brushless fan 202 is used for providing air required by gas combustion of the gas water heater and a device for discharging heat-exchanged flue gas, can regulate the speed, and has stable performance and strong wind resistance.
And the heat exchanger 204 is used for transferring heat energy of high-temperature flue gas obtained by igniting fuel gas and burning the fuel gas by the burner to water flowing in the pipeline through fin heat exchange so as to increase the temperature of water.
The gas proportional valve 208 and the gas distributing rod form a gas valve assembly, wherein gas enters through the gas inlet end, enters the gas distributing rod through the switch valve and the gas proportional valve 208, and is injected into the combustor 206 through the nozzle.
The water outlet joint 210 and the water inlet joint 212 are respectively used for realizing water outlet and water inlet, and the air inlet joint 214 is used for realizing gas introduction of the gas water heater.
The flow sensor 216 is used for performing a magnetic cutting action on the fluid flowing through the flow sensor 216 to generate a magnetic pulse signal, and can determine the water flow.
And a controller 218 for controlling the electrical components to cooperate.
Further, the controller 218 is configured to, when it is detected that the gas water heater meets the preset normal operation condition, obtain, in real time, a first fan rotation speed and a first air volume coefficient of the fan of the gas water heater during the normal operation process, and determine whether the gas water heater meets the fault protection condition according to the first fan rotation speed and the first air volume coefficient. And when it is determined that the fail-safe condition is satisfied, the gas proportional valve 208 of the gas water heater is controlled to be closed.
When the gas water heater works normally, gas is sprayed into the fire exhaust fin through the gas proportional valve and the nozzle on the sectional valve component, the gas is ignited by pulse discharge at a burner fire hole to form stable flame, and the gas is completely combusted in the combustion chamber to generate high-temperature flue gas. After the high-temperature flue gas flows through the heat exchanger, the direct current fan discharges the flue gas from the smoke outlet.
In one embodiment, when the smoke exhaust pipeline of the gas water heater is suddenly blocked or the external wind resistance is raised, the rotating speed of the fan is increased, and the controller monitors the rotating speed of the fan and continuously acquires the air volume coefficient at the rotating speed. When the sudden change of the air volume coefficient of the air volume in the set time is larger than the preset sudden change threshold value, an air volume sudden change protection module in the controller is triggered, the air volume sudden change protection module feeds back a wind pressure fault signal to the controller, the controller controls the gas proportional valve to be closed, the gas supply is stopped, and the generated wind pressure fault signal is displayed on a display screen of the gas water heater to remind a user. And when the rotating speed of the fan is greater than the preset rotating speed threshold value, the gas water heater reports a wind pressure fault and cuts off a gas source in time.
Further, if the sudden change of the air volume coefficient is smaller than a preset sudden change threshold value, the fan rotating speed module acquires the rotating speed again, when the rotating speed of the fan is larger than the preset rotating speed threshold value, a generated air pressure fault signal is fed back to the controller, the controller controls to close the gas proportional valve, the gas supply is cut off, and the flame overflow phenomenon occurs.
In the gas water heater, when the gas water heater is detected to meet the preset normal operation condition, the first fan rotating speed and the first air volume coefficient of the fan of the gas water heater in the normal operation process are acquired in real time, and whether the gas water heater meets the fault protection condition or not is judged according to the first fan rotating speed and the first air volume coefficient. And when the fault protection condition is determined to be met, controlling a gas proportional valve of the gas water heater to be closed. The method and the device have the advantages that whether the gas water heater breaks down or not can be timely determined according to the first fan rotating speed and the first air volume coefficient of the fan of the gas water heater, and the original feedback needle structure is not required to be adjusted to detect the combustion condition of the combustor. When the fault of the gas water heater is determined, the gas proportional valve of the gas water heater is controlled to be closed in time, gas supply is cut off, the situation that smoke flows backwards and flame overflows outside is avoided, and the safety performance of the gas water heater in the using process is improved.
In one embodiment, as shown in fig. 3, a safety control method for a gas water heater is provided, which specifically includes:
1) and acquiring a starting instruction aiming at the gas water heater, responding to the starting instruction, and controlling the gas water heater to start.
2) And controlling a fan of the gas water heater to perform self-cleaning within a preset cleaning time period.
3) And acquiring a second fan rotating speed and a second air volume coefficient of the self-cleaned gas water heater.
4) And comparing the rotating speed of the second fan and the second air volume coefficient with the corresponding preset rotating speed threshold value and preset air volume coefficient threshold value respectively.
5) And when the second fan rotating speed is determined to be greater than the preset rotating speed threshold value and the second air volume coefficient is determined to be greater than the preset air volume coefficient threshold value, determining that the second fan rotating speed and the second air volume coefficient of the gas water heater meet the preset normal operation condition.
6) When the gas water heater is detected to meet the preset normal operation condition, the first fan rotating speed and the first air volume coefficient of the fan of the gas water heater in the normal operation process are acquired in real time.
7) And determining an air volume coefficient abrupt change corresponding to the first air volume coefficient according to the lifting degree of the rotating speed of the first fan.
8) And acquiring a preset mutation threshold corresponding to the air volume coefficient mutation, and comparing the preset mutation threshold with the air volume coefficient mutation.
9) And when the sudden change of the air volume coefficient is larger than a preset sudden change threshold value, determining that the gas water heater meets the fault protection condition.
10) When the sudden change of the air volume coefficient is smaller than the preset sudden change threshold value, the current fan rotating speed of the gas water heater is collected again, and the current fan rotating speed is compared with the corresponding preset rotating speed threshold value.
11) And when the current fan rotating speed is determined to be greater than the preset rotating speed threshold value, determining that the gas water heater meets the fault protection condition.
12) And when the fault protection condition is determined to be met, controlling a gas proportional valve of the gas water heater to be closed.
According to the safety control method of the gas water heater, when the gas water heater is detected to meet the preset normal operation condition, the first fan rotating speed and the first air volume coefficient of the fan of the gas water heater in the normal operation process are obtained in real time, and whether the gas water heater meets the fault protection condition or not is judged according to the first fan rotating speed and the first air volume coefficient. And when the fault protection condition is determined to be met, controlling a gas proportional valve of the gas water heater to close. The method and the device have the advantages that whether the gas water heater breaks down or not can be timely determined according to the first fan rotating speed and the first air volume coefficient of the fan of the gas water heater, and the original feedback needle structure is not required to be adjusted to detect the combustion condition of the combustor. When the fault of the gas water heater is determined, the gas proportional valve of the gas water heater is controlled to be closed in time, gas supply is cut off, the situation that smoke flows backwards and flame overflows outside is avoided, and the safety performance of the gas water heater in the using process is improved.
It should be understood that, although the steps in the flowcharts related to the above embodiments are shown in sequence as indicated by the arrows, the steps are not necessarily executed in sequence as indicated by the arrows. The steps are not limited to being performed in the exact order illustrated and, unless explicitly stated herein, may be performed in other orders. Moreover, at least a part of the steps in each flowchart related to the above embodiments 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 order of performing the steps or stages is not necessarily sequential, but may be performed alternately or alternately with other steps or at least a part of the steps or stages in other steps.
In one embodiment, as shown in fig. 4, there is provided a safety control device of a gas water heater, including: an acquisition module 402, a fault protection condition determination module 404, and a gas proportional valve control module 406, wherein:
the acquisition module 402 is configured to acquire a first fan rotation speed and a first air volume coefficient of a fan of the gas water heater in a normal operation process in real time when it is detected that the gas water heater meets a preset normal operation condition.
And the fault protection condition judgment module 404 is configured to judge whether the gas water heater meets the fault protection condition according to the first fan rotation speed and the first air volume coefficient.
And the gas proportional valve control module 406 is used for controlling the gas proportional valve of the gas water heater to be closed when the fault protection condition is determined to be met.
In the safety control device of the gas water heater, when the gas water heater is detected to meet the preset normal operation condition, the first fan rotating speed and the first air volume coefficient of the fan of the gas water heater in the normal operation process are acquired in real time, and whether the gas water heater meets the fault protection condition is judged according to the first fan rotating speed and the first air volume coefficient. And when the fault protection condition is determined to be met, controlling a gas proportional valve of the gas water heater to be closed. The method and the device have the advantages that whether the gas water heater breaks down or not can be timely determined according to the first fan rotating speed and the first air volume coefficient of the fan of the gas water heater, and the original feedback needle structure is not required to be adjusted to detect the combustion condition of the combustor. When the fault of the gas water heater is determined, the gas proportional valve of the gas water heater is controlled to be closed in time, gas supply is cut off, the situation that smoke flows backward and flame overflows is avoided, and the safety performance of the gas water heater in the using process is improved.
In one embodiment, there is provided a safety control device of a gas water heater, further comprising:
the starting instruction acquisition module is used for acquiring a starting instruction for the gas water heater;
the starting instruction response module is used for responding to a starting instruction and controlling the gas water heater to start up;
the self-cleaning module is used for controlling a fan of the gas water heater to perform self-cleaning within a preset cleaning time period;
and the preset normal operation condition judgment module is used for judging whether the self-cleaned gas water heater meets the preset normal operation condition.
In one embodiment, the preset normal operation condition determining module is further configured to:
acquiring a second fan rotating speed and a second air volume coefficient of the self-cleaned gas water heater; acquiring a preset air volume coefficient threshold corresponding to the second air volume coefficient; and judging whether the second fan rotating speed and the second air volume coefficient of the gas water heater meet preset normal operation conditions or not according to the preset rotating speed threshold and the preset air volume coefficient threshold.
In this embodiment, whether the second fan rotation speed and the second air volume coefficient of the gas water heater meet the preset normal operation condition is determined by acquiring the second fan rotation speed and the second air volume coefficient of the self-cleaned gas water heater and according to the preset rotation speed threshold value and the preset air volume coefficient threshold value. The flue gas that remains that has realized earlier to gas heater cleans before carrying out formal operation heating to judge the second fan rotational speed and the second amount of wind coefficient of gas heater after cleaning, in time determine whether satisfy and predetermine normal operating condition, avoid starting gas heater and heat under the unable normal operating's of flue jam condition, and then promote the security performance of gas heater in the use.
In one embodiment, the preset normal operation condition determining module is further configured to:
comparing the rotating speed of the second fan and the second air volume coefficient with a preset rotating speed threshold value and a preset air volume coefficient threshold value respectively; and when the second fan rotating speed is determined to be greater than the preset rotating speed threshold value and the second air volume coefficient is determined to be greater than the preset air volume coefficient threshold value, determining that the second fan rotating speed and the second air volume coefficient of the gas water heater meet the preset normal operation condition.
In this embodiment, the second fan rotation speed and the second air volume coefficient are respectively compared with the preset rotation speed threshold and the preset air volume coefficient threshold, and when it is determined that the second fan rotation speed is greater than the preset rotation speed threshold and the second air volume coefficient is greater than the preset air volume coefficient threshold, it is determined that the second fan rotation speed and the second air volume coefficient of the gas water heater satisfy the preset normal operation condition. The flue gas that remains that has realized earlier to gas heater cleans before carrying out formal operation heating to judge the second fan rotational speed and the second amount of wind coefficient of gas heater after cleaning, in time determine whether satisfy and predetermine normal operating condition, avoid starting gas heater and heat under the unable normal operating's of flue jam condition, and then promote the security performance of gas heater in the use.
In one embodiment, there is provided a safety control device of a gas water heater, further comprising:
and the first air volume coefficient determining module is used for determining a first air volume coefficient of the fan according to the total energy of the fan, the mechanical energy of the rotation of the fan and the internal energy consumed by the heating of the fan in the normal operation process of the gas water heater.
In one embodiment, the fault protection condition determining module is further configured to:
determining an air volume coefficient abrupt change corresponding to the first air volume coefficient according to the lifting degree of the rotating speed of the first fan; and judging whether the gas water heater meets the fault protection condition or not according to the sudden change of the air volume coefficient.
In one embodiment, the fault protection condition determining module is further configured to:
acquiring a preset mutation amount threshold corresponding to the air volume coefficient mutation amount; comparing a preset mutation threshold value with an air volume coefficient mutation; and when the sudden change of the air volume coefficient is larger than a preset sudden change threshold value, determining that the gas water heater meets the fault protection condition.
In one embodiment, the fault protection condition determining module is further configured to:
when the sudden change of the air volume coefficient is smaller than the preset sudden change threshold value, the current fan rotating speed of the gas water heater is collected again; comparing the current fan rotating speed with a corresponding preset rotating speed threshold; and when the current fan rotating speed is determined to be greater than the preset rotating speed threshold value, determining that the gas water heater meets the fault protection condition.
In one embodiment, the fault protection condition determining module is further configured to:
and when the second fan rotating speed is detected to be smaller than the preset rotating speed threshold value or the second air volume coefficient is detected to be smaller than the preset air volume coefficient threshold value, determining that the gas water heater meets the fault protection condition.
In one embodiment, the gas proportional valve control module is further configured to:
and when the condition that the fault protection condition is met is determined, generating a corresponding wind pressure fault signal, controlling the closing of a gas proportional valve of the gas water heater according to the wind pressure fault signal, and displaying the wind pressure fault signal on a display panel of the gas water heater.
For specific limitations of the safety control device of the gas water heater, reference may be made to the above limitations of the safety control method of the gas water heater, which are not described herein again. The modules in the safety control device of the gas water heater can be wholly or partially 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, a computer device is provided, which may be a gas water heater, the internal structure of which may be as shown in fig. 5. The gas water heater comprises a gas water heater main body, and a fan, a gas proportional valve, a display screen, an input device, a memory and a processor which are arranged on the gas water heater main body, wherein the fan, the gas proportional valve, the display screen and the input device are connected with the processor. Wherein the processor of the gas water heater is used to provide computing and control capabilities. The memory of the gas water heater comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The computer program is executed by a processor to implement a safety control method for a gas water heater. The display screen of the gas water heater can be a liquid crystal display screen or an electronic ink display screen, and the input device of the gas water heater can be a touch layer covered on the display screen or a key, a track ball or a touch pad and the like arranged on the shell of the gas water heater.
Those skilled in the art will appreciate that the architecture shown in fig. 5 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
when the gas water heater is detected to meet the preset normal operation condition, acquiring a first fan rotating speed and a first air volume coefficient of a fan of the gas water heater in the normal operation process in real time;
judging whether the gas water heater meets fault protection conditions or not according to the rotating speed of the first fan and the first air volume coefficient;
and when the fault protection condition is determined to be met, controlling a gas proportional valve of the gas water heater to be closed.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
and determining a first air volume coefficient of the fan according to the total energy of the fan, the mechanical energy of the fan in rotation and the internal energy consumed by the fan in heating in the normal operation process of the gas water heater.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
determining an air volume coefficient abrupt change corresponding to the first air volume coefficient according to the lifting degree of the rotating speed of the first fan;
and judging whether the gas water heater meets the fault protection condition or not according to the sudden change of the air volume coefficient.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
acquiring a preset mutation amount threshold value corresponding to the air volume coefficient mutation amount;
comparing a preset mutation threshold value with an air volume coefficient mutation;
and when the sudden change of the air volume coefficient is larger than a preset sudden change threshold value, determining that the gas water heater meets the fault protection condition.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
when the sudden change of the air volume coefficient is smaller than the preset sudden change threshold value, the current fan rotating speed of the gas water heater is collected again;
comparing the current fan rotating speed with a corresponding preset rotating speed threshold;
and when the current fan rotating speed is determined to be greater than the preset rotating speed threshold value, determining that the gas water heater meets the fault protection condition.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
acquiring a starting instruction for the gas water heater;
responding to a starting instruction, and controlling the gas water heater to start;
controlling a fan of the gas water heater to perform self-cleaning within a preset cleaning time period;
and judging whether the self-cleaned gas water heater meets the preset normal operation condition or not.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
acquiring a second fan rotating speed and a second air volume coefficient of the self-cleaned gas water heater;
acquiring a preset air volume coefficient threshold value corresponding to the second air volume coefficient;
and judging whether the second fan rotating speed and the second air volume coefficient of the gas water heater meet preset normal operation conditions or not according to the preset rotating speed threshold and the preset air volume coefficient threshold.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
comparing the rotating speed of the second fan and the second air volume coefficient with a preset rotating speed threshold value and a preset air volume coefficient threshold value respectively;
and when the second fan rotating speed is determined to be greater than the preset rotating speed threshold value and the second air volume coefficient is determined to be greater than the preset air volume coefficient threshold value, determining that the second fan rotating speed and the second air volume coefficient of the gas water heater meet the preset normal operation condition.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
and when the second fan rotating speed is detected to be smaller than the preset rotating speed threshold value or the second air volume coefficient is detected to be smaller than the preset air volume coefficient threshold value, determining that the gas water heater meets the fault protection condition.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
and when the condition that the fault protection condition is met is determined, generating a corresponding wind pressure fault signal, controlling the closing of a gas proportional valve of the gas water heater according to the wind pressure fault signal, and displaying the wind pressure fault signal on a display panel of the gas water heater.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
when the gas water heater is detected to meet the preset normal operation condition, acquiring a first fan rotating speed and a first air volume coefficient of a fan of the gas water heater in the normal operation process in real time;
judging whether the gas water heater meets fault protection conditions or not according to the rotating speed of the first fan and the first air volume coefficient;
and when the fault protection condition is determined to be met, controlling a gas proportional valve of the gas water heater to be closed.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and determining a first air volume coefficient of the fan according to the total energy of the fan, the mechanical energy of the fan in rotation and the internal energy consumed by the fan in heating in the normal operation process of the gas water heater.
In one embodiment, the computer program when executed by the processor further performs the steps of:
determining an air volume coefficient abrupt change corresponding to the first air volume coefficient according to the lifting degree of the rotating speed of the first fan;
and judging whether the gas water heater meets the fault protection condition or not according to the sudden change of the air volume coefficient.
In one embodiment, the computer program when executed by the processor further performs the steps of:
acquiring a preset mutation amount threshold corresponding to the air volume coefficient mutation amount;
comparing a preset mutation threshold value with an air volume coefficient mutation;
and when the sudden change of the air volume coefficient is larger than a preset sudden change threshold value, determining that the gas water heater meets the fault protection condition.
In one embodiment, the computer program when executed by the processor further performs the steps of:
when the sudden change of the air volume coefficient is smaller than the preset sudden change threshold value, the current fan rotating speed of the gas water heater is collected again;
comparing the current fan rotating speed with a corresponding preset rotating speed threshold;
and when the current fan rotating speed is determined to be greater than the preset rotating speed threshold value, determining that the gas water heater meets the fault protection condition.
In one embodiment, the computer program when executed by the processor further performs the steps of:
acquiring a starting instruction for the gas water heater;
responding to a starting instruction, and controlling the gas water heater to start;
controlling a fan of the gas water heater to perform self-cleaning within a preset cleaning time period;
and judging whether the self-cleaned gas water heater meets the preset normal operation condition or not.
In one embodiment, the computer program when executed by the processor further performs the steps of:
acquiring a second fan rotating speed and a second air volume coefficient of the self-cleaned gas water heater;
acquiring a preset air volume coefficient threshold corresponding to the second air volume coefficient;
and judging whether the second fan rotating speed and the second air volume coefficient of the gas water heater meet preset normal operation conditions or not according to the preset rotating speed threshold and the preset air volume coefficient threshold.
In one embodiment, the computer program when executed by the processor further performs the steps of:
comparing the rotating speed of the second fan and the second air volume coefficient with a preset rotating speed threshold value and a preset air volume coefficient threshold value respectively;
and when the second fan rotating speed is determined to be greater than the preset rotating speed threshold value and the second air volume coefficient is determined to be greater than the preset air volume coefficient threshold value, determining that the second fan rotating speed and the second air volume coefficient of the gas water heater meet the preset normal operation condition.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and when the second fan rotating speed is detected to be smaller than the preset rotating speed threshold value or the second air volume coefficient is detected to be smaller than the preset air volume coefficient threshold value, determining that the gas water heater meets the fault protection condition.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and when the condition that the fault protection condition is met is determined, generating a corresponding wind pressure fault signal, controlling the closing of a gas proportional valve of the gas water heater according to the wind pressure fault signal, and displaying the wind pressure fault signal on a display panel of the gas water heater.
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, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. 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), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification 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 (9)
1. A safety control method for a gas water heater, the method comprising:
judging whether the self-cleaned gas water heater meets preset normal operation conditions or not;
when the gas water heater is detected to meet a preset normal operation condition, acquiring a first fan rotating speed and a first air volume coefficient of a fan of the gas water heater in a normal operation process in real time; the first air volume coefficient is determined according to the total energy of the fan, the mechanical energy of the fan in rotation and the internal energy consumed by the fan in heating in the normal operation process of the gas water heater;
determining an air volume coefficient abrupt change corresponding to the first air volume coefficient according to the lifting degree of the rotating speed of the first fan; when the external wind pressure is increased or the flue is blocked, the rotating speed of the first fan is increased in a curve manner, and the first air volume coefficient is caused to change;
judging whether the gas water heater meets fault protection conditions or not according to the sudden variable of the air volume coefficient; when the fault protection condition is met, controlling a gas proportional valve of the gas water heater to close;
and judging whether the gas water heater meets fault protection conditions or not according to the sudden variable of the air volume coefficient, wherein the judgment comprises the following steps: acquiring a preset mutation amount threshold corresponding to the air volume coefficient mutation amount; comparing the preset mutation quantity threshold value with the air volume coefficient mutation quantity; when the air volume coefficient mutation is determined to be larger than the preset mutation threshold, determining that the gas water heater meets the fault protection condition; when the sudden change of the air volume coefficient is determined to be smaller than or equal to the preset sudden change threshold, the fact that the sudden change of the current air volume coefficient is caused by the change of external environment data is indicated, the current fan rotating speed of the gas water heater is collected again, the current fan rotating speed is compared with the corresponding preset rotating speed threshold, when the current fan rotating speed is determined to be larger than the preset rotating speed threshold, the fact that the external environment of the gas water heater is abnormal is indicated, and the fact that the gas water heater meets a fault protection condition is determined;
judging whether the gas water heater through self-cleaning satisfies preset normal operating conditions or not, including: acquiring a second fan rotating speed and a second air volume coefficient of the gas water heater after self-cleaning; the second air volume coefficient is determined according to the total energy of the fan, the mechanical energy of the rotation of the fan and the internal energy consumed by the heating of the fan in the operation process of the self-cleaned gas water heater; acquiring a preset air volume coefficient threshold corresponding to the second air volume coefficient; and judging whether the second fan rotating speed and the second air volume coefficient of the gas water heater meet preset normal operation conditions or not according to the preset rotating speed threshold and the preset air volume coefficient threshold.
2. The method of claim 1, prior to said determining whether the self-purged gas water heater meets preset normal operating conditions, further comprising:
acquiring a starting instruction aiming at the gas water heater;
responding to the starting instruction, and controlling the gas water heater to start;
and controlling a fan of the gas water heater to perform self-cleaning within a preset cleaning time period.
3. The method according to claim 1, wherein the determining whether the second fan speed and the second air volume coefficient of the gas water heater satisfy preset normal operating conditions according to the preset speed threshold and the preset air volume coefficient threshold comprises:
comparing the second fan rotating speed and the second air volume coefficient with the preset rotating speed threshold value and the preset air volume coefficient threshold value respectively;
and when the second fan rotating speed is determined to be greater than the preset rotating speed threshold value and the second air volume coefficient is determined to be greater than the preset air volume coefficient threshold value, determining that the second fan rotating speed and the second air volume coefficient of the gas water heater meet preset normal operation conditions.
4. The method of claim 3, further comprising:
and when the second fan rotating speed is detected to be smaller than the preset rotating speed threshold value or the second air volume coefficient is detected to be smaller than the preset air volume coefficient threshold value, determining that the gas water heater meets the fault protection condition.
5. The method of any one of claims 1 to 4, wherein said controlling a gas proportional valve of the gas water heater to close when it is determined that a failsafe condition is satisfied comprises:
and when the condition that the fault protection condition is met is determined, generating a corresponding wind pressure fault signal, controlling the closing of a gas proportional valve of the gas water heater according to the wind pressure fault signal, and displaying the wind pressure fault signal on a display panel of the gas water heater.
6. A safety control device for a gas water heater, the device comprising:
the preset normal operation condition judgment module is used for judging whether the self-cleaned gas water heater meets the preset normal operation condition or not;
the acquisition module is used for acquiring a first fan rotating speed and a first air volume coefficient of a fan in the normal operation process of the gas water heater in real time when the gas water heater is detected to meet the preset normal operation condition; the first air volume coefficient is determined according to the total energy of a fan, the mechanical energy of the fan in rotation and the internal energy consumed by the fan in heating in the normal operation process of the gas water heater;
the fault protection condition judgment module is used for determining an air volume coefficient sudden change corresponding to the first air volume coefficient according to the lifting degree of the rotating speed of the first fan; when the external wind pressure is increased or the flue is blocked, the rotating speed of the first fan is increased in a curve manner, and the first air volume coefficient is caused to change; judging whether the gas water heater meets fault protection conditions or not according to the sudden variable of the air volume coefficient;
the gas proportional valve control module is used for controlling the closing of a gas proportional valve of the gas water heater when the fault protection condition is met;
the fault protection condition determining module is further configured to: acquiring a preset mutation amount threshold corresponding to the air volume coefficient mutation amount; comparing the preset mutation quantity threshold value with the air volume coefficient mutation quantity; when the air volume coefficient mutation is determined to be larger than the preset mutation threshold, determining that the gas water heater meets the fault protection condition; when the sudden change of the air volume coefficient is determined to be smaller than or equal to the preset sudden change threshold, the fact that the sudden change of the current air volume coefficient is caused by the change of external environment data is indicated, the current fan rotating speed of the gas water heater is collected again, the current fan rotating speed is compared with the corresponding preset rotating speed threshold, when the current fan rotating speed is determined to be larger than the preset rotating speed threshold, the fact that the external environment of the gas water heater is abnormal is indicated, and the fact that the gas water heater meets the fault protection condition is determined;
the preset normal operation condition judgment module is further used for:
acquiring a second fan rotating speed and a second air volume coefficient of the gas water heater after self-cleaning; the second air volume coefficient is determined according to the total energy of the fan, the mechanical energy of the rotation of the fan and the internal energy consumed by the heating of the fan in the operation process of the self-cleaned gas water heater; acquiring a preset air volume coefficient threshold corresponding to the second air volume coefficient; and judging whether the second fan rotating speed and the second air volume coefficient of the gas water heater meet preset normal operation conditions or not according to the preset rotating speed threshold and the preset air volume coefficient threshold.
7. The apparatus of claim 6, wherein the predetermined normal operating condition determining module is further configured to:
comparing the second fan rotating speed and the second air volume coefficient with the preset rotating speed threshold value and the preset air volume coefficient threshold value respectively; and when the second fan rotating speed is determined to be greater than the preset rotating speed threshold value and the second air volume coefficient is determined to be greater than the preset air volume coefficient threshold value, determining that the second fan rotating speed and the second air volume coefficient of the gas water heater meet preset normal operation conditions.
8. A gas water heater comprises a gas water heater main body, and a fan, a gas proportional valve, a display screen, a memory and a processor which are arranged on the gas water heater main body, wherein the fan, the gas proportional valve and the display screen are connected with the processor; the memory stores a computer program, characterized in that the processor implements the steps of the method of any one of claims 1 to 5 when executing the computer program.
9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 5.
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| CN202011473847.3A CN112556204B (en) | 2020-12-15 | 2020-12-15 | Safety control method and device for gas water heater and gas water heater |
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| FR2305054A1 (en) * | 1975-03-18 | 1976-10-15 | Saunier Duval | EXHAUST FAN MOTOR CONTROL SLAVE DEVICE FOR FORCED DRAFT GAS BOILERS |
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| CN202158666U (en) * | 2011-07-07 | 2012-03-07 | 海尔集团公司 | Internal pressure feedback regulation system of gas water heater |
| CN106931651A (en) * | 2017-04-21 | 2017-07-07 | 中山市樱雪集团有限公司 | Forced-ventilated type gas water heater and control method thereof |
| CN109869893A (en) * | 2019-01-29 | 2019-06-11 | 广东万和热能科技有限公司 | A kind of blower control method and system of gas heater |
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