Post-cleaning method of gas water heater, gas water heater and controller of gas water heater

Abstract

The invention relates to the technical field of water heaters, and discloses a post-cleaning method of a gas water heater, the gas water heater and a controller of the gas water heater, and the post-cleaning method comprises the steps that in response to a shutdown instruction of the water heater, the continuous operation duration from ignition to shutdown of the water heater is obtained; based on the continuous operation duration and pre-configured post-cleaning first configuration, the post-cleaning target rotating speed and the post-cleaning duration time of a draught fan of the water heater are determined; wherein the first post-cleaning configuration is used for representing the relationship among the continuous operation duration, the post-cleaning target rotating speed and the post-cleaning duration. Therefore, the post-cleaning rotation speed and the post-cleaning duration corresponding to the continuous operation duration are pre-configured, so that noise increase and sudden change caused by post-cleaning of the fan are effectively reduced under the condition that the operation time of the water heater is very short, and the user experience is remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of water heaters, and in particular to a post-cleaning method for a gas water heater, a gas water heater and a controller thereof. Background Art

[0002] After the gas water heater is shut down, the gas proportional valve will close, but the fan will perform post-cleaning at the set speed to remove the flue gas and residual gas that is not fully burned in the combustion chamber, while cooling the heat exchanger, thereby reducing the temperature rise of the gas water heater when the water is shut down.

[0003] In order to better cool the heat exchanger and meet the water-off temperature rise requirements, the related technology usually controls the fan to perform post-cleaning at a constant high speed, and then turns off the fan after a set time. In this way, the high speed of the fan will generate high noise, and the user experience is poor. Furthermore, when the gas water heater is working normally, the fan speed corresponds to the load, that is, medium load corresponds to medium fan speed, and low load corresponds to low fan speed. The fan speed is different, and the noise is also different. In the actual use of the gas water heater by the user, the water heater is in a medium load or low load operation state most of the time. Correspondingly, the fan is at a medium speed or low speed most of the time. If the fan stops at a medium speed or a low speed, at this time, the default setting of the fan post-cleaning speed is higher than the fan speed when the water heater is stopped. In this way, when the water heater is stopped, the fan turns to increase the speed for post-cleaning, which will bring a large noise increase or increase mutation, and the user experience is extremely unfriendly. Summary of the invention

[0004] In view of this, the present invention provides a post-cleaning method for a gas water heater, a gas water heater and a controller thereof, so as to effectively reduce the sudden increase in noise caused by the post-cleaning of the fan.

[0005] In a first aspect, the present invention provides a post-cleaning method for a gas water heater, the method comprising:

[0006] In response to a shutdown instruction of the water heater, obtaining the continuous operation time of the water heater from the current ignition to the shutdown;

[0007] Determine a post-cleaning target speed and a post-cleaning duration of a fan of the water heater based on the continuous operation time and a pre-configured post-cleaning first configuration;

[0008] The first post-cleaning configuration is used to characterize the relationship between the continuous operation time, the post-cleaning target speed, and the post-cleaning duration.

[0009] The post-cleaning method of the gas water heater of the embodiment of the present invention fully considers the continuous operation time of the water heater when the water heater is shut down normally, and determines the corresponding post-cleaning target speed of the fan and the post-cleaning duration based on the continuous operation time of the water heater. Thus, the post-cleaning speed and post-cleaning duration corresponding to the operation time are pre-configured, so that when the water heater operation time is short, the noise increase caused by the post-cleaning of the fan is effectively reduced, and the user experience is significantly improved.

[0010] In some optional implementations, before obtaining the continuous operation time of the water heater from the current ignition to the shutdown, the method further includes:

[0011] Detect shutdown conditions of water heaters;

[0012] When the shutdown condition indicates that the water heater is shut down due to a fault, the fan of the water heater is controlled to perform post-cleaning at a first target speed, and the post-cleaning duration of the fan is determined to be a first target time.

[0013] The post-cleaning method of the gas water heater in the embodiment of the present invention fully considers the situation where the water heater is shut down due to a fault. For the situation where the water heater is shut down due to a fault, a post-cleaning speed and a post-cleaning duration are pre-set that are different from those when the water heater is shut down due to a normal shutdown, thereby effectively reducing the sudden increase in noise caused by the fan post-cleaning and significantly improving the user experience.

[0014] In some optional implementations, detecting a shutdown condition of the water heater includes:

[0015] Detect fault signals of water heaters;

[0016] Based on the fact that the fault signal belongs to the set fault range, it is determined that the water heater is shut down due to a fault.

[0017] In some optional implementations, determining a post-cleaning target speed and a post-cleaning duration of a fan of the water heater based on the continuous operation time and the pre-configured post-cleaning first configuration includes:

[0018] When the continuous operation time is less than the first time threshold, the fan of the water heater is controlled to perform post-cleaning at a first target speed, and the post-cleaning duration of the fan is determined to be the first target time.

[0019] The post-cleaning method of the gas water heater in the embodiment of the present invention controls the fan of the water heater to perform post-cleaning at a first target speed when the continuous operation time is less than a first time threshold, and determines the post-cleaning duration of the fan to be the first target time. Therefore, when the water heater is normally ignited and shut down, full attention is paid to the situation that the heat exchanger of the water heater receives less heat and has a smaller water shut-off temperature rise when the normal combustion working time is less than the set time. Compared with the normal combustion working time reaching the set working time, a smaller speed is used for post-cleaning here, which effectively reduces the sudden change in large noise increase caused by the fan at a fixed higher speed, significantly improves the user experience, and at the same time effectively reduces the energy consumption caused by the post-cleaning of the water heater.

[0020] In some optional implementations, determining a post-cleaning target speed and a post-cleaning duration of a fan of the water heater based on the continuous operation time and the pre-configured post-cleaning first configuration includes:

[0021] When the continuous operation time reaches the first time threshold, the speed of the fan before shutdown is obtained within the set time before the water heater is shut down;

[0022] Determine the post-cleaning target speed and post-cleaning duration of the fan according to the speed before shutdown and the pre-configured post-cleaning second configuration;

[0023] The second post-cleaning configuration is used to characterize the relationship between the speed before shutdown and the post-cleaning target speed and the post-cleaning duration.

[0024] The post-cleaning method of the gas water heater of the embodiment of the present invention obtains the pre-shutdown speed of the fan within the set time before the water heater shuts down when the continuous operation time reaches the first time threshold, and determines the post-cleaning target speed and post-cleaning duration of the fan according to the pre-shutdown speed and the pre-configured post-cleaning second configuration. Thus, based on the pre-shutdown speed of the fan, the post-cleaning speed and post-cleaning duration that match it can be set, effectively reducing the sudden increase in noise caused by the fan at a fixed higher speed, significantly improving the user experience, and effectively reducing the energy consumption caused by the post-cleaning of the water heater.

[0025] In some optional implementations, determining the post-cleaning target speed and post-cleaning duration of the fan according to the pre-shutdown speed and the pre-configured post-cleaning second configuration includes:

[0026] When the speed before shutdown is less than the first speed, the post-cleaning target speed of the fan is determined to be the second target speed, and the post-cleaning duration is the second target time;

[0027] The second target speed is greater than the first target speed, and the first target speed is a target speed for the water heater to perform post-cleaning under a set operating state.

[0028] In some optional implementations, determining the post-cleaning target speed and post-cleaning duration of the fan according to the speed before shutdown and the pre-configured post-cleaning second configuration further includes:

[0029] When the speed reaches the first speed but is less than the second speed before shutdown, determining the post-cleaning target speed of the fan to be the third target speed, and the post-cleaning duration to be the third target time;

[0030] The third target speed is greater than the second target speed, and the third target time is greater than the second target time.

[0031] In some optional implementations, determining the post-cleaning target speed and post-cleaning duration of the fan according to the speed before shutdown and the pre-configured post-cleaning second configuration further includes:

[0032] When the speed reaches the second speed before shutdown, the post-cleaning target speed of the fan is determined to be a fourth target speed, and the post-cleaning duration is a fourth target time;

[0033] The fourth target speed is greater than the third target speed, and the fourth target time is greater than the third target time.

[0034] The post-cleaning method of the gas water heater in the embodiment of the present invention reasonably divides a plurality of speed intervals according to the speed before shutdown, and pre-configures a post-cleaning target speed and a post-cleaning duration that match the speed of the fan before the water heater is shut down, thereby effectively reducing the sudden increase in noise caused by the fan at a fixed higher speed, significantly improving the user experience, and effectively reducing the energy consumption caused by the post-cleaning of the water heater.

[0035] In a second aspect, the present invention provides a controller for a gas water heater, the controller comprising:

[0036] The memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the post-cleaning method of the gas water heater of the first aspect or any corresponding embodiment thereof by executing the computer instructions.

[0037] In a third aspect, the present invention provides a gas water heater, which includes the above-mentioned controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 Schematic diagram of an application scenario of the post-cleaning method of a gas water heater of the present invention;

[0040] Figure 2 is a schematic flow chart of a post-cleaning method for a gas water heater according to an embodiment of the present invention;

[0041] Figure 3 is a schematic flow chart of another post-cleaning method for a gas water heater according to an embodiment of the present invention;

[0042] Figure 4 is a flow chart of another post-cleaning method for a gas water heater according to an embodiment of the present invention;

[0043] Figure 5 is a flow chart for implementing a first specific application example of a post-cleaning method for a gas water heater according to an embodiment of the present invention;

[0044] Figure 6 is a flowchart for implementing a second specific application example of the post-cleaning method for a gas water heater according to an embodiment of the present invention;

[0045] Figure 7 It is a schematic diagram of the hardware structure of the controller of the gas water heater according to an embodiment of the present invention. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0047] Figure 1 Schematic diagram of the application scenario of the post-cleaning method of the gas water heater of the present invention, such as Figure 1 The overall structure and working principle of the gas water heater shown in the figure, the gas water heater includes a burner 101, a heat exchanger 102, a fan 103 and other components. Among them, one of the main functions of the fan 103 is to provide the air required for combustion, so as to fully burn the natural gas entering the gas interface 105 of the gas water heater. Another main function of the fan 103 is to perform post-cleaning after the gas water heater is shut down, so as to quickly discharge the combustion exhaust gas through the smoke outlet 104 of the gas water heater, and to reduce the temperature of the heat exchanger 102 by air cooling. In view of the post-cleaning process after the gas water heater is shut down, the present invention provides a post-cleaning method of a gas water heater, a gas water heater and a controller thereof, so as to effectively reduce the sudden increase in noise caused by the post-cleaning of the fan.

[0048] According to an embodiment of the present invention, an embodiment of a post-cleaning method for a gas water heater is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. And although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here.

[0049] In this embodiment, a post-cleaning method for a gas water heater is provided, which can be used for a gas water heater. Figure 2 It is a flowchart of the post-cleaning method for a gas water heater according to an embodiment of the present invention, as Figure 2 shown, and the process includes the following steps:

[0050] Step S201, in response to the shutdown instruction of the water heater, obtain the continuous operation duration of the water heater from the current ignition to shutdown.

[0051] In some alternative embodiments, when receiving the shutdown instruction of the water heater, the continuous operation duration of the water heater from the current ignition to shutdown can be directly obtained through the main controller of the water heater. It can also be obtained through other suitable means.

[0052] Here, after obtaining the continuous operation duration of the water heater from the current ignition to shutdown, it can be determined whether the hot water valve is closed again within a short time after the user opens the hot water switch based on the continuous operation duration.

[0053] Step S202, based on the continuous operation duration and a pre-configured first post-cleaning configuration, determine the post-cleaning target speed and the post-cleaning duration of the blower of the water heater.

[0054] Wherein, the first post-cleaning configuration is used to represent the relationship between the continuous operation duration and the post-cleaning target speed and the post-cleaning duration.

[0055] Specifically, the first configuration may include the mapping relationship between the continuous operation duration and the post-cleaning target speed and the post-cleaning duration, and may also include the determination rules for the post-cleaning target speed corresponding to the continuous operation duration and the determination rules for the post-cleaning duration. For example, the continuous operation duration can be divided into multiple intervals, and post-cleaning parameters or the determination rules for post-cleaning parameters are configured for different intervals. The post-cleaning parameters may include the post-cleaning target speed and the post-cleaning duration. For example: the continuous operation duration less than the first time threshold can be used as the first time interval. For the first time interval, a fixed post-cleaning target speed and a fixed post-cleaning duration can be configured. For the first time interval, the relationship between the post-cleaning target speed and the blower speed at the shutdown of the water heater, and the relationship between the post-cleaning duration and the continuous operation duration can also be configured.

[0056] The interval in which the continuous operation time is greater than or equal to the first time threshold can be used as the second time interval, and a post-cleaning parameter different from the first time interval can be configured, or a determination rule for the post-cleaning parameter different from the first time interval can be configured. For example, for the second time interval, fan operation parameters such as the fan speed before the water heater is shut down can be further obtained, and the post-cleaning time and post-cleaning duration can be determined based on the further obtained fan operation parameters.

[0057] In some optional embodiments, if the continuous operation time is short, it is possible that the user turns on the hot water switch of the water-using equipment such as the hot water valve and then quickly turns it off. In this case, the combustion working time of the heat exchanger of the water heater is short, the heat received by the heat exchanger is small, and the water-stop temperature rise is small. Compared with the case where the normal combustion work reaches the set working time, the user is not adapted to the sound generated by the operation of the water heater. If the cleaning is performed at a larger post-cleaning speed or the post-cleaning duration is long, a longer period of higher noise will be generated, which will bring a poor experience to the user. And at this time, controlling the fan to perform a longer post-cleaning operation also brings a large waste of energy. Therefore, when the continuous operation time of the water heater is short, it can be determined that the water heater performs the post-cleaning operation at a lower post-cleaning target speed, and the post-cleaning duration is set to a smaller value. For example, if the continuous operation time of the water heater is less than 2 minutes, the post-cleaning target speed of the fan of the water heater is determined to be 2000r / min (revolutions / minute), and the post-cleaning duration is determined to be 30s.

[0058] It should be noted that the specific numerical values ​​involved here and in other descriptions of the present invention are for illustrative purposes only and do not constitute a limitation on the technical solutions of the present invention. In practical applications, they can be set according to actual needs.

[0059] The post-cleaning method of the gas water heater of the embodiment of the present invention fully considers the continuous operation time of the water heater when the water heater is shut down normally, and determines the corresponding post-cleaning target speed of the fan and the post-cleaning duration based on the continuous operation time of the water heater. As a result, the post-cleaning speed and post-cleaning duration corresponding to the operation time can be pre-configured, so that when the water heater operation time is short, the sudden increase in noise caused by the post-cleaning of the fan can be effectively reduced, and the user experience can be significantly improved.

[0060] In this embodiment, a post-cleaning method for a gas water heater is provided, which can be used for a gas water heater. Figure 3 is a flow chart of a post-cleaning method for a gas water heater according to an embodiment of the present invention. Figure 3 As shown, the process includes the following steps:

[0061] Step S301, in response to a shutdown instruction of the water heater, detecting a shutdown condition of the water heater.

[0062] In some optional implementations, the shutdown conditions of the water heater may include two categories of situations: fault shutdown and normal shutdown. Among them, the fault shutdown may include shutdown under abnormal combustion conditions such as ignition failure and accidental flameout of the water heater.

[0063] In some optional implementations, step S301 may include:

[0064] Step S3011, detecting a fault signal of the water heater.

[0065] There are many types of water heater failures, and different failures can be fed back to the main controller of the water heater through appropriate failure signals such as different failure codes or instructions. Therefore, the water heater can detect whether the failure signal of the water heater is received at each set period.

[0066] Step S3012: based on the fault signal belonging to the set fault range, it is determined that the water heater is shut down due to a fault.

[0067] Different fault codes or instructions can be used as fault signals. Different fault codes or instructions are used to characterize different fault types. The fault signal of the water heater is detected, and the fault type represented by the fault signal is determined to be within the set fault range. For example, the pre-configured set fault range includes fault code 32 for characterizing smoke exhaust system blockage, fault code 11 for characterizing ignition failure, fault code 12 for characterizing the flameout of the water heater after ignition, and fault code 13 for characterizing water heater overheating, etc. Here, if fault code a for characterizing the fault of the water heater indicator light does not belong to the set fault range. When fault code 32, 11, 12 or 13 is received, it is determined that the water heater is shut down due to a fault. When fault code a is received, it is determined that the fault signal does not belong to the set fault range, and other processing operations of the embodiment of the present invention are not performed for the fault code.

[0068] Step S302, when the shutdown condition indicates that the water heater is shut down due to a fault, control the fan of the water heater to perform post-cleaning at a first target speed, and determine the post-cleaning duration of the fan to be a first target time.

[0069] For example, the first target speed is 2000r / min and the first target time is 30s. Here, when the shutdown condition indicates that the water heater is shut down due to a fault, the fan of the water heater is controlled to perform post-cleaning at 2000r / min and stop when the post-cleaning duration reaches 30s.

[0070] Step S303, when the shutdown condition indicates that the water heater is shut down normally, the continuous operation time of the water heater from the current ignition to the shutdown is obtained.

[0071] In some optional embodiments of the present invention, if no fault signal of the water heater is received, the water heater is determined to be shut down normally. In this case, the continuous operation time of the water heater from the current ignition to the shutdown is obtained, and subsequent operations are performed based on the obtained continuous operation time.

[0072] It should be noted that step S303 is one of the steps in a series of operations executed in response to the shutdown command of the water heater. Therefore, the judgment process of "if no fault signal of the water heater is received, it is determined that the water heater is shut down normally" here means that if the shutdown command of the water heater is received and no fault signal of the water heater is detected within the time before the shutdown command is received, it is determined that the water heater is shut down normally.

[0073] For detailed operations on obtaining the continuous operation time from the current ignition to the shutdown of the water heater, see Figure 2 Step S201 of the illustrated embodiment will not be described in detail here.

[0074] The post-cleaning method of the gas water heater in the embodiment of the present invention fully considers the situation where the water heater is shut down due to a fault. For the situation where the water heater is shut down due to a fault, a post-cleaning speed and a post-cleaning duration are pre-set that are different from those when the water heater is shut down due to a normal shutdown, thereby effectively reducing the sudden increase in noise caused by the fan post-cleaning and significantly improving the user experience.

[0075] Step S304: Determine the post-cleaning target speed and post-cleaning duration of the fan of the water heater based on the continuous operation time and the pre-configured post-cleaning first configuration. Figure 2 Step S202 of the illustrated embodiment will not be described in detail here.

[0076] In this embodiment, a post-cleaning method for a gas water heater is provided, which can be used for a gas water heater. Figure 4 is a flow chart of a post-cleaning method for a gas water heater according to an embodiment of the present invention. Figure 4 As shown, the process includes the following steps:

[0077] Step S401, in response to a shutdown instruction of the water heater, detecting a shutdown condition of the water heater.

[0078] For details, please see Figure 3 Step S301 of the illustrated embodiment will not be described in detail here.

[0079] Based on the detection of the water heater shutdown condition, it can be determined whether the water heater is shut down due to a fault. If so, step S402 is executed, and if not, it indicates that the water heater is shut down normally, and step S403 is executed.

[0080] Step S402, when the shutdown condition indicates that the water heater is shut down due to a fault, control the fan of the water heater to perform post-cleaning at a first target speed, and determine the post-cleaning duration of the fan to be a first target time.

[0081] For details, please see Figure 3 Step S302 of the illustrated embodiment will not be described in detail here.

[0082] Step S403, when the shutdown condition indicates that the water heater is shut down normally, the continuous operation time of the water heater from the current ignition to the shutdown is obtained.

[0083] For details, please see Figure 3 Step S303 of the illustrated embodiment will not be described in detail here.

[0084] Step S404: determining a post-cleaning target speed and a post-cleaning duration of the fan of the water heater based on the continuous operation time and the pre-configured post-cleaning first configuration.

[0085] In some optional implementations, step S404 may include:

[0086] Step S4041, when the continuous operation time is less than the first time threshold, control the fan of the water heater to perform post-cleaning at a first target speed, and determine the post-cleaning duration of the fan to be the first target time.

[0087] Specifically, the first time threshold can be set according to actual needs, for example, the first time threshold can be set to 90s or 120s. If the continuous operation time of the water heater from this ignition to shutdown is less than the first time threshold, the heat generated by the heat exchanger of the water heater is small, and the water shut-off temperature rise is small. Compared with the case where the water heater works normally and reaches the first time threshold, the user is not accustomed to the sound produced by the operation of the water heater. If the cleaning is performed at a larger post-cleaning speed or the post-cleaning duration is longer, a higher noise will be generated for a longer time, giving the user a poor experience. And at this time, controlling the fan to perform a longer post-cleaning operation also results in a large waste of energy. Therefore, here, for the case where the continuous operation time is less than the first time threshold, the water heater is pre-configured to perform the post-cleaning operation at the first target speed in this case, and the duration of the post-cleaning operation is the first target time. It should be noted that the post-cleaning parameters such as the first target speed and the first target time when the continuous operation duration is less than the first time threshold can be configured to be the same as the target speed and post-cleaning time when the water heater stops due to a fault, or the post-cleaning parameters such as the target speed and post-cleaning time when the water heater stops due to a fault can be configured separately according to actual conditions. Furthermore, when the continuous operation duration is less than the first time threshold, the first target speed for the fan to perform post-cleaning can also be a dynamic parameter. For example, the first target speed can be set to be equal to the speed of the fan when the water heater stops.

[0088] The post-cleaning method of the gas water heater in the embodiment of the present invention controls the fan of the water heater to perform post-cleaning at a first target speed when the continuous operation time is less than a first time threshold, and determines the post-cleaning duration of the fan to be the first target time. Therefore, when the water heater is normally ignited and shut down, full attention is paid to the situation that the heat exchanger of the water heater receives less heat and has a smaller water shut-off temperature rise when the normal combustion working time is less than the set time. Compared with the normal combustion working time reaching the set working time, a smaller speed is used for post-cleaning here, which effectively reduces the sudden increase in noise caused by the fan at a fixed higher speed, significantly improves the user experience, and at the same time effectively reduces the energy consumption caused by the post-cleaning of the water heater.

[0089] In some optional implementations, step S404 may further include:

[0090] Step S4042, when the continuous operation time reaches the first time threshold, the pre-shutdown speed of the fan within a set time before the water heater shuts down is obtained.

[0091] In some optional embodiments, the set time before the water heater stops can be set according to actual needs, for example, the set time tn is 10s. The speed before stopping can be set to the instantaneous speed of the fan at the moment when the set time tn is counted down from the stop moment. The speed before stopping can also be set to the set time tn counted down from the stop moment to determine the average speed of the fan during this period.

[0092] Step S4043, determining the post-cleaning target speed and post-cleaning duration of the fan according to the speed before shutdown and the pre-configured post-cleaning second configuration.

[0093] The second post-cleaning configuration is used to characterize the relationship between the speed before shutdown and the post-cleaning target speed and the post-cleaning duration.

[0094] Specifically, the second configuration may include a mapping relationship between the pre-stop speed and the post-cleaning target speed and the post-cleaning duration, and may also include a determination rule for the post-cleaning target speed corresponding to the pre-stop speed and the post-cleaning duration.

[0095] For example, the speed before shutdown can be divided into multiple intervals, and post-cleaning parameters or post-cleaning parameter determination rules can be configured for different intervals. The post-cleaning parameters can include a post-cleaning target speed and a post-cleaning duration. For example: the speed before shutdown can be less than the first speed as the first speed interval, and for the first speed interval, a fixed post-cleaning target speed and a fixed post-cleaning duration can be configured. For the first speed interval, the relationship between the post-cleaning target speed and the speed before shutdown, as well as the relationship between the post-cleaning duration and the continuous operation time of the water heater can also be configured.

[0096] The interval in which the speed before shutdown is greater than or equal to the first speed can be used as the second speed interval, and a post-cleaning parameter different from the first speed interval can be configured. The second speed interval greater than or equal to the first speed can also be further divided to configure a more accurate post-cleaning target speed and post-cleaning duration.

[0097] Specifically, a mapping between the speed before shutdown and the fan post-cleaning parameters can be pre-configured, and the post-cleaning parameters can include a post-cleaning target speed and a post-cleaning duration, etc. When the continuous operation time reaches a first set threshold, the fan post-cleaning speed and post-cleaning duration are determined according to the pre-configured mapping.

[0098] The post-cleaning method of the gas water heater of the embodiment of the present invention obtains the pre-shutdown speed of the fan within the set time before the water heater shuts down when the continuous operation time reaches the first time threshold, and determines the post-cleaning target speed and post-cleaning duration of the fan according to the pre-shutdown speed and the pre-configured post-cleaning second configuration. Thus, based on the pre-shutdown speed of the fan, the post-cleaning speed and post-cleaning duration that match it can be set, effectively reducing the sudden increase in noise caused by the fan at a fixed higher speed, significantly improving the user experience, and effectively reducing the energy consumption caused by the post-cleaning of the water heater.

[0099] In some optional implementations, step S4043 may include:

[0100] Step a1, when the speed before shutdown is less than the first speed, determining the post-cleaning target speed of the fan as the second target speed, and the post-cleaning duration as the second target time.

[0101] The second target speed is greater than the first target speed, and the first target speed is a target speed for the water heater to perform post-cleaning under a set operating state.

[0102] In some optional implementations, the set operating state may include a situation where the water heater is shut down due to a fault and a situation where the continuous operating time from the current ignition to the shutdown of the water heater is less than a first time threshold.

[0103] The second target speed may be a fixed speed, for example, 2400 r / min. The second target speed may also be configured as a dynamic parameter related to the speed of the fan before shutdown, for example, the second target speed is equal to the speed of the fan before shutdown. The second duration may be 30 s.

[0104] For example, the second target speed can be set to be equal to the speed before the fan stops. For example, the first speed is 2600r / min, and the speed before the fan stops is 2400r / min. Since 2400r / min is less than 2600r / min, the second target speed can be determined to be 2400r / min. The first speed is 2600r / min, and the speed before the fan stops is 2200r / min. Since 2200r / min is also less than 2600r / min, the second target speed can be determined to be 2200r / min.

[0105] Furthermore, the second target speed may also be set as the speed of the fan before shutdown minus a set value, or the speed of the fan before shutdown multiplied by the first set coefficient.

[0106] In some optional implementations, step S4043 may further include:

[0107] Step a2: when the speed reaches the first speed but is less than the second speed before shutdown, determine the post-cleaning target speed of the fan as the third target speed and the post-cleaning duration as the third target time.

[0108] The third target speed is greater than the second target speed, and the third target time is greater than the second target time.

[0109] The setting of the third target speed is similar to the setting of the second target speed. The third target speed can be set to a fixed value, or to a dynamic parameter related to the speed of the fan before shutdown. The third duration can be 40s.

[0110] For example, if the second speed is 2800r / min, the third target speed can be set to 2500r / min, or the third target speed can be set to the speed before the fan stops plus the set value or the speed before the fan stops multiplied by the second setting coefficient. The values ​​of the second setting coefficient and the first setting coefficient can be set according to actual needs.

[0111] In some optional implementations, step S4043 may further include:

[0112] Step a3, when the speed reaches the second speed before shutdown, determine the post-cleaning target speed of the fan as a fourth target speed, and the post-cleaning duration as a fourth target time.

[0113] The fourth target speed is greater than the third target speed, and the fourth target time is greater than the third target time.

[0114] The setting of the fourth target speed is similar to the setting of the second target speed and the third target speed. The fourth target speed can be set to a fixed value, or to a dynamic parameter related to the speed of the fan before shutdown. The fourth duration can be 60s.

[0115] For example, the second speed is 2800r / min, the fourth target speed can be set to 3300r / min, and the third target speed can also be set to the speed before the fan stops plus the set value or the speed before the fan stops multiplied by the second setting coefficient. The values ​​of the second setting coefficient and the first setting coefficient can be set according to actual needs.

[0116] The post-cleaning method of the gas water heater in the embodiment of the present invention reasonably divides a plurality of speed intervals according to the speed before shutdown, configures a post-cleaning target speed and a post-cleaning duration that match the speed of the fan before the water heater is shut down, effectively reduces the sudden increase in noise caused by the fan at a fixed higher speed, significantly improves the user experience, and effectively reduces the energy consumption caused by the post-cleaning of the water heater.

[0117] In this embodiment, a post-cleaning method for a gas water heater is provided, which can be used for a gas water heater. Figure 5 : is a flow chart of a first specific application example of a post-cleaning method for a gas water heater according to an embodiment of the present invention. Figure 5 As shown, the process includes the following steps:

[0118] Step S501, in response to a water heater shutdown instruction, detecting a water heater shutdown condition.

[0119] Here, the shutdown conditions of the water heater may include: the user turns off the water heater by clicking the "on / off key" on the water heater display interface, the user turns off the water heater by pressing the "on / off key" button on the water heater, the user turns off the water after using the hot water normally for a period of time, and the water heater automatically shuts down due to a fault. Among them, the automatic shutdown of the water heater due to a fault may include many situations, please refer to Figure 3 Steps S3011 and S3012 of the illustrated embodiment are not described in detail here.

[0120] Step S502: Based on the shutdown condition, determine whether the water heater is shut down due to a fault.

[0121] If yes, then go to step S503. If no, then go to step S504.

[0122] Step S503, controlling the fan of the water heater to perform post-cleaning at a first target speed, and determining the post-cleaning duration of the fan to be a first target time.

[0123] Among them, the first target speed may be 2000 r / min, and the first target time may be 30 s.

[0124] Step S504, obtaining the continuous operation time of the water heater from the current ignition to the shutdown.

[0125] Step S505, determining whether the continuous operation time reaches a first time threshold.

[0126] If yes, then execute step S506. If no, then execute step S403.

[0127] It should be noted that, here, when the continuous operation time of the water heater shutdown at the ignition value does not reach the first time threshold, it can be simply set to be the same as the post-cleaning parameter under the water heater failure shutdown, and step S503 is directly executed. It is also possible to configure a separate post-cleaning parameter for the case where the continuous operation time of the water heater shutdown at the ignition value does not reach the first time threshold according to actual needs. The specific configuration can be done as needed, and no further details are given here.

[0128] The first time threshold may be 2 minutes or other suitable time, such as 90s, 100s, etc.

[0129] Step S506, obtaining the pre-shutdown speed of the fan within a set time before the water heater shuts down.

[0130] For details, please see the above Figure 4 Step S4042 shown in the embodiment will not be repeated here.

[0131] Step S507, determining whether the rotation speed before shutdown is less than the first rotation speed.

[0132] If yes, then go to step S508. If no, then go to step S509.

[0133] Step S508, determining the post-cleaning target speed of the fan to be the second target speed, and the post-cleaning duration to be the second target time.

[0134] In some optional implementations, the first rotational speed is 2600 r / min, the second target rotational speed is the rotational speed of the fan before shutdown, and the second target time is 30 s.

[0135] Step S509, determining the post-cleaning target speed of the fan to be a fourth target speed, and the post-cleaning duration to be a fourth target time.

[0136] In some optional implementations, the first rotational speed is 2600 r / min, the fourth target rotational speed is 3300 r / min, and the fourth target time is 60 s.

[0137] In this embodiment, a post-cleaning method for a gas water heater is provided, which can be used for a gas water heater. Figure 6 is a flow chart of a second specific application example of the post-cleaning method for a gas water heater according to an embodiment of the present invention. Figure 6 As shown, the process includes the following steps:

[0138] Step S601, in response to a shutdown instruction of the water heater, detecting a shutdown condition of the water heater.

[0139] Please refer to Figure 5 Step S501 of the illustrated embodiment will not be described in detail here.

[0140] Step S602: Based on the shutdown condition, determine whether the water heater is shut down due to a fault.

[0141] If yes, then go to step S603. If no, then go to step S604.

[0142] Step S603, controlling the fan of the water heater to perform post-cleaning at a first target speed, and determining the post-cleaning duration of the fan to be a first target time.

[0143] Among them, the first target speed may be 2000 r / min, and the first target time may be 30 s.

[0144] Step S604, obtaining the continuous operation time of the water heater from the current ignition to the shutdown.

[0145] Step S605, determining whether the continuous operation time reaches a first time threshold.

[0146] If yes, then execute step S606. If no, then execute step S603.

[0147] It should be noted that, here, when the continuous operation time of the water heater shutdown at the ignition value does not reach the first time threshold, it can be simply set to be the same as the post-cleaning parameter under the water heater failure shutdown, and step S603 is directly executed. It is also possible to configure a separate post-cleaning parameter for the case where the continuous operation time of the water heater shutdown at the ignition value does not reach the first time threshold according to actual needs. The specific configuration can be done as needed, and no further details are given here.

[0148] The first time threshold may be 2 minutes or other suitable time, such as 90s, 100s, etc.

[0149] Step S606, obtaining the pre-shutdown speed of the fan within a set time before the water heater shuts down.

[0150] For details, please see the above Figure 4 Step S4042 shown in the embodiment will not be repeated here.

[0151] Step S607, determining whether the rotation speed before shutdown is less than the first rotation speed.

[0152] If yes, then go to step S608. If no, then go to step S609.

[0153] Step S608, determining the post-cleaning target speed of the fan to be the second target speed, and the post-cleaning duration to be the second target time.

[0154] In some optional embodiments, the first rotational speed is 2300 r / min, the second target rotational speed is 2000 r / min, and the second target time is 30 s.

[0155] Step S609, determining whether the rotation speed before shutdown is greater than or equal to the first rotation speed and less than the second rotation speed.

[0156] If yes, then execute step S610. If no, then the speed before shutdown is greater than the second speed, then execute step S611.

[0157] Step S610, determining that the post-cleaning speed of the fan is a third target speed and the post-cleaning duration is a third target time.

[0158] In some optional embodiments, the second rotational speed is 2800 r / min, the third target rotational speed is 2500 r / min, and the third target time is 40 s.

[0159] Step S611, determining the post-cleaning target speed of the fan to be a fourth target speed, and the post-cleaning duration to be a fourth target time.

[0160] The fourth target speed is 3300 r / min, and the fourth target time is 60 s.

[0161] above Figure 5 and Figure 6 For other details of the illustrated embodiment, please refer to the above Figure 2-Figure 4 The details of the illustrated embodiment will not be repeated here.

[0162] The embodiment of the present invention also provides a gas water heater controller and a gas water heater having the controller. Figure 7 , Figure 7 is a schematic diagram of the structure of a computer device provided by an optional embodiment of the present invention, such as Figure 7 As shown, the computer device includes: one or more processors 10, a memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components are connected to each other using different buses for communication, and can be installed on a common mainboard or installed in other ways as needed. The processor can process the instructions executed in the computer device, including instructions stored in or on the memory to display the graphical information of the GUI on an external input / output device (such as, a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple computer devices can be connected, and each device provides some necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 7 A processor 10 is taken as an example.

[0163] The processor 10 may be a central processing unit, a network processor or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be a dedicated integrated circuit, a programmable logic device or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic or any combination thereof.

[0164] The memory 20 stores instructions executable by at least one processor 10, so that at least one processor 10 executes the method shown in the above embodiment.

[0165] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 20 may optionally include a memory remotely arranged relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0166] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid state drive; the memory 20 may also include a combination of the above types of memory.

[0167] The computer device also includes an input device 30 and an output device 40. The processor 10, the memory 20, the input device 30 and the output device 40 may be connected via a bus or other means. Figure 7 The example of connecting through bus is taken in the following.

[0168] The input device 30 can receive input digital or character information, and generate key signal input related to the user settings and function control of the computer device, such as a touch screen, a keypad, a mouse, a track pad, a touch pad, an indicator bar, one or more mouse buttons, a trackball, a joystick, etc. The output device 40 may include a display device, an auxiliary lighting device (e.g., an LED) and a tactile feedback device (e.g., a vibration motor), etc. The above-mentioned display device includes but is not limited to a liquid crystal display, a light emitting diode, a display and a plasma display. In some optional embodiments, the display device can be a touch screen.

[0169] The embodiment of the present invention also provides a computer-readable storage medium. The method according to the embodiment of the present invention can be implemented in hardware, firmware, or can be implemented as a computer code that can be recorded in a storage medium, or can be implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and will be stored in a local storage medium through a network download, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state hard disk, etc.; further, the storage medium can also include a combination of the above types of memories. It can be understood that a computer, a processor, a microprocessor controller, or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor, or hardware, the method shown in the above embodiment is implemented.

[0170] A part of the present invention may be applied as a computer program product, such as a computer program instruction, which, when executed by a computer, can call or provide the method and / or technical solution according to the present invention through the operation of the computer. Those skilled in the art should understand that the existence of the computer program instruction in a computer-readable medium includes, but is not limited to, a source file, an executable file, an installation package file, etc., and accordingly, the way in which the computer program instruction is executed by the computer includes, but is not limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding installed program. Here, the computer-readable medium may be any available computer-readable storage medium or communication medium accessible to the computer.

[0171] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A post-cleaning method for a gas water heater, characterized in that: The method comprises: In response to a shutdown instruction of the water heater, obtaining the continuous operation time of the water heater from the current ignition to the shutdown; Determining a post-cleaning target speed and a post-cleaning duration of a fan of the water heater based on the continuous operation time and a pre-configured post-cleaning first configuration; The first post-cleaning configuration is used to characterize the relationship between the continuous operation time, the post-cleaning target speed, and the post-cleaning duration.

2. The method according to claim 1, characterized in that Before obtaining the continuous operation time of the water heater from the current ignition to the shutdown, the method further includes: detecting a shutdown condition of the water heater; When the shutdown condition indicates that the water heater is shut down due to a fault, the fan of the water heater is controlled to perform post-cleaning at a first target speed, and the post-cleaning duration of the fan is determined to be a first target time.

3. The method according to claim 2, characterized in that The detecting the shutdown condition of the water heater comprises: Detecting a fault signal of the water heater; Based on the fact that the fault signal belongs to a set fault range, it is determined that the water heater is shut down due to a fault.

4. The method according to claim 1, characterized in that The determining of the post-cleaning target speed and post-cleaning duration of the fan of the water heater based on the continuous operation time and the pre-configured post-cleaning first configuration includes: When the continuous operation time is less than the first time threshold, the fan of the water heater is controlled to perform post-cleaning at a first target speed, and the post-cleaning duration of the fan is determined to be the first target time.

5. The method according to claim 1, characterized in that: The determining of the post-cleaning target speed and post-cleaning duration of the fan of the water heater based on the continuous operation time and the pre-configured post-cleaning first configuration includes: When the continuous operation time reaches a first time threshold, obtaining the pre-shutdown speed of the fan within a set time before the water heater shuts down; Determining a post-cleaning target speed and a post-cleaning duration of the fan according to the pre-shutdown speed and a pre-configured post-cleaning second configuration; The second post-cleaning configuration is used to characterize the relationship between the speed before shutdown and the post-cleaning target speed and the post-cleaning duration.

6. The method according to claim 5, characterized in that The determining of the post-cleaning target speed and the post-cleaning duration of the fan according to the pre-shutdown speed and the pre-configured post-cleaning second configuration includes: When the speed before shutdown is less than the first speed, determining the post-cleaning target speed of the fan to be the second target speed, and the post-cleaning duration to be the second target time; The second target speed is greater than the first target speed, and the first target speed is a target speed for the water heater to perform post-cleaning in a set operating state.

7. The method according to claim 6, characterized in that The step of determining the post-cleaning target speed and post-cleaning duration of the fan according to the pre-shutdown speed and the pre-configured post-cleaning second configuration further includes: When the speed before shutdown reaches the first speed but is less than the second speed, determining the post-cleaning target speed of the fan to be a third target speed, and the post-cleaning duration to be a third target time; The third target speed is greater than the second target speed, and the third target time is greater than the second target time.

8. The method according to claim 7, characterized in that The step of determining the post-cleaning target speed and post-cleaning duration of the fan according to the pre-shutdown speed and the pre-configured post-cleaning second configuration further includes: When the speed before shutdown reaches the second speed, determining the post-cleaning target speed of the fan to be a fourth target speed, and the post-cleaning duration to be a fourth target time; The fourth target speed is greater than the third target speed, and the fourth target time is greater than the third target time.

9. A controller for a gas water heater, characterized in that: The controller comprises: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the post-cleaning method of the gas water heater according to any one of claims 1 to 8 by executing the computer instructions.

10. A gas water heater, characterized in that: The gas water heater comprises the controller according to claim 9.

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