Gas water heater, control method thereof, control device and storage medium

Abstract

The present invention discloses a gas water heater and its control method, control device and storage medium. The control method includes the following steps: if it is monitored that the water flow rate change value of the water outlet of the gas water heater exceeds a preset threshold value within a first preset time, then the water flow rate of the water outlet corresponding to the starting point of the first preset time period is set as the initial water flow rate, the water flow rate of the water outlet corresponding to the end point of the first preset time period is set as the target water flow rate, and the water flow rate of the water outlet is adjusted to restore to the initial water flow rate; the water flow rate of the water outlet is adjusted from the initial water flow rate to the target water flow rate within a second preset time period and the water outlet temperature of the water outlet is controlled to be within a preset range of the set temperature. The present invention solves the problem in the prior art of gas water heaters that the total water flow rate of the water outlet causes a temporary sudden change in the water outlet temperature, ensures a stable water outlet temperature, and improves user experience.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a gas water heater and a control method, a control device and a storage medium thereof. Background Art

[0002] The gas water heater products currently on the market cannot provide stable constant temperature water supply when the number of water points changes. For example, when using water for bathing, if other water points are turned on and used at this time, the corresponding bathing water point will have colder water than the original water outlet temperature for a period of time. Or, when multiple water points are in the open state, if one water point stops being used, other water points will have short periods of hotter water. Especially in winter, the outlet water temperature changes suddenly, and the user experience is poor.

[0003] The current common practice is to directly adjust the combustion load when the total water flow at the outlet changes, so that the outlet water temperature quickly reaches the set temperature. However, although adjusting the combustion load can speed up the speed at which the outlet water temperature reaches the set temperature, it takes a long time to actually achieve the temperature change, which affects the user experience. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defect in the prior art that the outlet water temperature temporarily changes suddenly when the total water flow at the outlet changes, and to provide a gas water heater and its control method, control device and storage medium.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] In a first aspect, a control method for a gas water heater is provided, the control method comprising the following steps:

[0007] If it is monitored that the water flow rate change value of the water outlet of the gas water heater exceeds a preset threshold value within a first preset time period, the water flow rate of the water outlet corresponding to the starting point of the first preset time period is set as the initial water flow rate, the water flow rate of the water outlet corresponding to the end point of the first preset time period is set as the target water flow rate, and the water flow rate of the water outlet is adjusted to return to the initial water flow rate;

[0008] The water flow rate of the water outlet is adjusted to reach the target water flow rate from the initial water flow rate within the second preset time and the outlet water temperature of the water outlet is controlled to be within the preset range of the set temperature.

[0009] Preferably, if the monitored water flow rate change value of the water outlet exceeds a preset threshold value within a first preset time, setting the water flow rate of the water outlet corresponding to the starting point of the first preset time period as the initial water flow rate, and setting the water flow rate of the water outlet corresponding to the end point of the first preset time period as the target water flow rate further includes:

[0010] Real-time monitoring of water flow changes at the outlet.

[0011] Preferably, the method further includes:

[0012] Real-time monitoring of water flow at the outlet;

[0013] If it is monitored that the water flow rate of the water outlet exceeds the preset water flow rate, the step of real-time monitoring of the change value of the water flow rate of the water outlet is performed.

[0014] Preferably, the water flow rate of the water outlet is adjusted from the initial water flow rate to the target water flow rate within the second preset time as follows:

[0015] Determining the corresponding actual adjustment time based on the water flow change value of the water outlet;

[0016] adjusting the water flow rate of the water outlet from the initial water flow rate to the target water flow rate based on the actual adjustment time;

[0017] Different water flow rate change values ​​correspond to different actual adjustment times, and the actual adjustment time is no greater than the second preset time.

[0018] Preferably, the step of adjusting the water flow rate of the water outlet from the initial water flow rate to the target water flow rate specifically includes:

[0019] Adjust the opening of the water flow regulating valve of the water heater, or adjust the water flow rate of the water outlet pipe of the water heater to achieve the water flow rate at the water outlet from the initial water flow rate to the target water flow rate.

[0020] Preferably, controlling the outlet water temperature of the water outlet to be within a preset range of the set temperature specifically includes:

[0021] Real-time detection of the outlet water temperature;

[0022] Adjusting the combustion load of the combustion chamber according to the real-time temperature so that the outlet water temperature is within a preset range of the set temperature. Preferably, the step of adjusting the combustion load of the combustion chamber according to the real-time temperature so that the outlet water temperature is within a preset range of the set temperature specifically includes:

[0023] The difference between the real-time temperature and the set temperature is used as a feedback parameter to adjust the combustion load through PID regulation.

[0024] In a second aspect, a control device for a gas water heater is provided, the control device comprising:

[0025] a first control module, configured to, when detecting that a change in the water flow rate at the water outlet of the gas water heater exceeds a preset threshold value within a first preset time period, set the water flow rate at the water outlet corresponding to the starting point of the first preset time period as an initial water flow rate, set the water flow rate at the water outlet corresponding to the end point of the first preset time period as a target water flow rate, and adjust the water flow rate at the water outlet to return to the initial water flow rate;

[0026] The second control module adjusts the water flow rate of the water outlet from the initial water flow rate to the target water flow rate within a second preset time period and controls the outlet water temperature of the water outlet to be within a preset range of the set temperature.

[0027] Preferably, the control device further comprises a third control module, and the third control module is used to monitor the change value of the water flow rate of the water outlet in real time.

[0028] Preferably, the control device also includes a fourth control module, which is used to monitor the water flow of the water outlet in real time. If the water flow of the water outlet is monitored to exceed the preset water flow, the third control module is controlled to execute the step of real-time monitoring of the change value of the water flow of the water outlet.

[0029] Preferably, the first control module includes:

[0030] a first control unit, wherein the first control unit determines a corresponding actual adjustment time based on a change value of the water flow rate of the water outlet;

[0031] A second control unit, the second control unit adjusts the water flow rate of the water outlet from the initial water flow rate to the target water flow rate based on the actual adjustment time; wherein different water flow rate change values ​​correspond to different actual adjustment times, and the actual adjustment time is not greater than the second preset time.

[0032] Preferably, the first control module further includes:

[0033] The third control unit is used to adjust the opening of the water flow regulating valve of the water heater, or adjust the water flow rate of the water outlet pipe of the water heater to achieve the water flow rate of the water outlet from the initial water flow rate to the target water flow rate.

[0034] Preferably, the second control module includes:

[0035] A fourth control unit is configured to detect the real-time temperature of the water outlet at the water outlet in real time, and adjust the combustion load of the combustion chamber according to the real-time temperature so that the water outlet temperature is within a preset range of the set temperature. Preferably, the step of adjusting the combustion load of the combustion chamber according to the real-time temperature so that the water outlet temperature is within the preset range of the set temperature specifically includes:

[0036] The difference between the real-time temperature and the set temperature is used as a feedback parameter to adjust the combustion load through PID regulation.

[0037] In a third aspect, a gas water heater is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any of the above-mentioned control methods when executing the computer program.

[0038] In a fourth aspect, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, any of the control methods described above is implemented.

[0039] The positive progressive effect of the present invention is to solve the problem of temporary sudden changes in water outlet temperature caused by changes in the total water flow at the water outlet in the existing gas water heater technology, ensure stable water outlet temperature, and improve user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a flow chart of a method for controlling a gas water heater provided in Example 1 of the present invention.

[0041] Figure 2 This is a flow chart of another method for controlling a gas water heater provided in Example 1 of the present invention.

[0042] Figure 3 This is a module schematic diagram of a control device for a gas water heater provided in Example 2 of the present invention.

[0043] Figure 4 This is a schematic structural diagram of an electronic device of a gas water heater provided in Example 3 of the present invention. DETAILED DESCRIPTION

[0044] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0045] Example 1

[0046] This embodiment provides a control method for a gas water heater, wherein the gas water heater includes: a water tank, a water flow regulating valve, a water flow meter, a combustion chamber, and a water outlet temperature sensor.

[0047] Reference Figure 1 , the control method of the gas water heater includes the following steps:

[0048] Step 101. If it is monitored that the water flow rate change value of the water outlet of the gas water heater exceeds a preset threshold value within a first preset time, the water flow rate of the water outlet corresponding to the starting point of the first preset time period is set as the initial water flow rate, the water flow rate of the water outlet corresponding to the end point of the first preset time period is set as the target water flow rate, and the water flow rate of the water outlet is adjusted to restore to the initial water flow rate.

[0049] In a specific example, the preset threshold value in the water heater is set to 1L, the first preset time period is set to 1 second, and the water flow rate at the water outlet refers to the total water flow rate of all water use points; assuming that the target user uses water at a certain water use point, the water flow rate at the water outlet is 5L at this time. If the water flow meter detects that the water flow rate at the water outlet changes to 7L within 1 second, that is, the change in water flow rate is 2L, which is greater than the preset threshold value of 1L, then it means that the number of water use points has increased or the water flow rate of some of the existing multiple water use points has increased; at this time, 5L is set as the initial water flow rate and 7L is set as the target water flow rate; in order to prevent the outlet water temperature from suddenly dropping, the water flow rate at the water outlet at this time is restored from 7L to 5L by adjusting the water flow regulating valve. The effect that can be achieved by this operation is that due to the increase in water use points or the increase in the water flow rate of some of the existing multiple water use points, the water flow rate at the water outlet remains unchanged, so the water flow rate at the target user's water use point will be appropriately reduced accordingly. However, precisely because the water flow rate at the water outlet has not changed, the outlet water temperature will not be affected.

[0050] In another specific example, the preset threshold in the water heater is also set to 1L, the first preset time period is set to 1 second, and the water flow rate at the water outlet refers to the total water flow rate of all water use points; assuming that the target user uses water at a certain water use point, the water flow rate at the water outlet is 5L at this time. If the water flow meter detects that the water flow rate at the water outlet changes to 3L within 1 second, that is, the change in water flow rate is 2L, which is greater than the preset threshold of 1L, it means that the number of water use points has decreased or the water flow rate of some of the existing multiple water use points has decreased; at this time, 5L is set as the initial water flow rate and 3L is set as the target water flow rate; in order to prevent the outlet water temperature from suddenly increasing, the water flow rate at the water outlet at this time is restored from 3L to 5L by adjusting the water flow regulating valve. The effect that can be achieved by this operation is that due to the reduction in water use points or the reduction in the water flow rate of some of the existing multiple water use points, the water flow rate at the water outlet remains unchanged, so the water flow rate at the target user's water use point will increase accordingly. However, precisely because the water flow rate at the water outlet has not changed, the outlet water temperature will not be affected.

[0051] In an optional embodiment, Figure 2 As shown, step 101 also includes steps 1000 and 1001.

[0052] Step 1000: monitor the water flow rate of the water outlet in real time. If the water flow rate of the water outlet is monitored to exceed the preset water flow rate, execute step 1001.

[0053] Step 1001: monitor the change in water flow at the water outlet in real time.

[0054] In a specific example, the preset water flow rate in the water heater is set to 1L. The preset water flow rate is the minimum flow value for using hot water. Its purpose is to determine whether the user is using hot water. If not, there is obviously no need for subsequent steps to control the water temperature. If the water flow rate at the water outlet is monitored to be 1.5L, which is greater than the preset water flow rate of 1L, it is determined that the user is using hot water, and the next step is to perform real-time monitoring of the water flow change value at the water outlet.

[0055] Step 102: Adjust the water flow rate of the water outlet from the initial water flow rate to the target water flow rate within a second preset time and control the outlet water temperature of the water outlet to be within a preset range of the set temperature.

[0056] In an optional embodiment, when step 102 is specifically implemented, a corresponding actual adjustment time is determined based on the water flow rate change value of the water outlet, and the water flow rate of the water outlet is adjusted from the initial water flow rate to the target water flow rate based on the actual adjustment time; wherein different water flow rate change values ​​correspond to different actual adjustment times, and the actual adjustment time is no greater than the second preset time. Simultaneously, the real-time temperature of the water outlet is detected in real time, and the combustion load of the combustion chamber is adjusted based on the real-time temperature so that the water outlet temperature is within the preset range of the set temperature.

[0057] In an optional embodiment, the water flow rate at the water outlet is adjusted from the initial water flow rate to the target water flow rate by adjusting the opening of the water flow regulating valve of the water heater or adjusting the water flow rate of the water outlet pipe of the water heater.

[0058] In the above example, the second preset time in the water heater is set to 10 seconds, the initial water flow rate is 5L, and the target water flow rate is 7L. The water flow rate at the outlet needs to reach 7L from 5L within 10 seconds. The corresponding actual adjustment time is determined based on the water flow change value of 2L at this time. The significance of the actual adjustment time is that when it does not take 10 seconds (i.e., the second preset time) for the initial water flow rate to adjust to the target water flow rate, the required actual adjustment time is matched according to the water flow change value to improve the user experience. The smaller the water flow change value, the shorter the actual adjustment time required, and vice versa, but it shall not exceed the second preset time at most. Assuming that the actual adjustment time for the water flow change value of 1-2L is 3 seconds, the actual adjustment time for 3-4L is 5 seconds, the actual adjustment time for 5-6L is 7 seconds, and the actual adjustment time for 7-8L is 8 seconds, etc. In this example, the water flow change value is 2L, and the corresponding actual adjustment time is 3 seconds. In order to achieve an actual adjustment time of 3 seconds, the opening of the water flow regulating valve of the water heater can be increased, or the water flow speed of the water outlet pipe of the water heater can be increased. In an optional embodiment, the step of adjusting the combustion load of the combustion chamber according to the real-time temperature so that the outlet water temperature is within a preset range of the set temperature specifically includes:

[0059] The difference between the real-time temperature and the set temperature is used as a feedback parameter to adjust the combustion load through PID regulation.

[0060] The PID adjustment method is to fine-tune the target combustion load based on the ideal value according to the actual water outlet temperature; after the water heater is set to the set temperature, the initial combustion load is calculated using the following calculation formula: W = Q*|T1-T2|; W is the combustion load, Q is the real-time water flow, T1 is the set temperature, and T2 is the water inlet temperature.

[0061] In this embodiment, it is first determined whether the target user is using hot water. A preset threshold is then set to limit the change in water flow at the water outlet. This preset threshold can trigger the setting of the initial and target water flows. The water flow at the water outlet is first adjusted back to the set initial flow, and then the water flow regulating valve and combustion chamber are controlled to adjust the water flow and heat load, respectively. Ultimately, the target user's water point reaches the target water flow and the set water outlet temperature. The control method for a gas water heater provided in this embodiment can address the problem of transient sudden changes in water outlet temperature caused by changes in the total water flow at the water outlet in existing gas water heater technologies, ensuring a stable water outlet temperature and improving the user experience.

[0062] Example 2

[0063] This embodiment provides a control device 10 for a gas water heater. Figure 3 As shown, the control device includes:

[0064] The first control module 11 is configured to, when detecting that a change in the water flow rate at the water outlet of the gas water heater exceeds a preset threshold value within a first preset time period, set the water flow rate at the water outlet corresponding to the starting point of the first preset time period as an initial water flow rate, set the water flow rate at the water outlet corresponding to the end point of the first preset time period as a target water flow rate, and adjust the water flow rate at the water outlet to return to the initial water flow rate;

[0065] The second control module 12 adjusts the water flow rate of the water outlet from the initial water flow rate to the target water flow rate within a second preset time period and controls the outlet water temperature of the water outlet to be within a preset range of the set temperature;

[0066] In an optional embodiment, the control device 10 further includes a third control module 13, and the third control module 13 is used to monitor the change value of the water flow rate of the water outlet in real time.

[0067] In an optional embodiment, the control device also includes a fourth control module 14, which is used to monitor the water flow of the water outlet in real time. If the water flow of the water outlet is monitored to exceed the preset water flow, the third control module 13 is controlled to execute the step of real-time monitoring of the change value of the water flow of the water outlet.

[0068] In an optional embodiment, the first control module 11 includes:

[0069] A first control unit 111, wherein the first control unit 111 determines a corresponding actual adjustment time based on a change value of the water flow rate of the water outlet;

[0070] The second control unit 112, the second control unit 112 adjusts the water flow rate of the water outlet from the initial water flow rate to the target water flow rate based on the actual adjustment time; wherein, different water flow rate change values ​​correspond to different actual adjustment times, and the actual adjustment time is not greater than the second preset time.

[0071] In an optional embodiment, the first control module further includes:

[0072] The third control unit 113 is used to adjust the opening of the water flow regulating valve of the water heater, or adjust the water flow rate of the water outlet pipe of the water heater to achieve the water flow rate of the water outlet from the initial water flow rate to the target water flow rate.

[0073] In an optional embodiment, the second control module includes:

[0074] The fourth control unit 124 is configured to detect the real-time temperature of the water outlet at the water outlet in real time, and adjust the combustion load of the combustion chamber according to the real-time temperature so that the water outlet temperature is within a preset range of the set temperature. In an optional embodiment, the step of adjusting the combustion load of the combustion chamber according to the real-time temperature so that the water outlet temperature is within the preset range of the set temperature specifically includes:

[0075] The difference between the real-time temperature and the set temperature is used as a feedback parameter to adjust the combustion load through PID regulation.

[0076] In this embodiment, it is first determined whether the target user is using hot water. A preset threshold is then set to limit the change in water flow at the water outlet. This preset threshold can trigger the setting of the initial and target water flows. The water flow at the water outlet is first adjusted back to the set initial flow, and then the water flow regulating valve and combustion chamber are controlled to adjust the water flow and heat load, respectively, ultimately ensuring that the target user's water point reaches the target water flow and the set water outlet temperature. The control device for a gas water heater provided in this embodiment can address the problem of transient sudden changes in water outlet temperature caused by changes in the total water flow at the water outlet in prior art gas water heaters, ensuring a stable water outlet temperature and improving the user experience.

[0077] Example 3

[0078] This embodiment provides a gas water heater, which includes an electronic device, Figure 4 This is a schematic structural diagram of an electronic device for a gas water heater provided in this embodiment. The electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the control method for the gas water heater in the above-mentioned embodiment 1 is implemented. Figure 4 The gas water heater 80 shown is only an example and should not limit the functions and scope of use of the embodiments of the present invention. Figure 4 As shown, the electronic device 80 may be a general-purpose computing device, such as a server device. Components of the electronic device 80 may include, but are not limited to, the at least one processor 81, the at least one memory 82, and a bus 83 connecting different system components (including the memory 82 and the processor 81).

[0079] The bus 83 includes a data bus, an address bus, and a control bus.

[0080] The memory 82 may include a volatile memory, such as a random access memory (RAM) 821 and / or a cache memory 822 , and may further include a read-only memory (ROM) 823 .

[0081] The memory 82 may also include a program tool 825 (or utility) having a set (at least one) of program modules 824, such program modules 824 including but not limited to: an operating system, one or more application programs, other program modules and program data, each of which or some combination may include an implementation of a network environment.

[0082] The processor 81 executes various functional applications and data processing by running computer programs stored in the memory 82 , such as the water heater control method in the above-mentioned embodiment 1.

[0083] The electronic device 80 can also communicate with one or more external devices 84. Such communication can be performed through an input / output (I / O) interface 85. In addition, the model generating electronic device 80 can also communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN) and / or a public network such as the Internet) through a network adapter 86. Figure 4 As shown, the network adapter 86 communicates with other modules of the electronic device 80 via the bus 83. Figure 4 Not shown, other hardware and / or software modules may be used in conjunction with the electronic device 80, including but not limited to microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems.

[0084] It should be noted that although the detailed description above refers to several units / modules or sub-units / modules of the water heater, this division is merely exemplary and not mandatory. In fact, according to embodiments of the present invention, the features and functions of two or more units / modules described above may be embodied in a single unit / module. Conversely, the features and functions of a single unit / module described above may be further divided and embodied by multiple units / modules.

[0085] Example 4

[0086] This embodiment provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the control method of the gas water heater in the above-mentioned embodiment 1 is implemented.

[0087] The readable storage medium may include, but is not limited to, a portable disk, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory, an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0088] In a possible implementation, the present invention can also be implemented in the form of a program product, which includes program code. When the program product runs on a terminal device, the program code is used to enable the terminal device to execute the steps of the control method for the gas water heater in the above embodiment 1.

[0089] The program code for executing the present invention may be written in any combination of one or more programming languages, and may be executed entirely on the user device, partially on the user device, as a standalone software package, partially on the user device and partially on a remote device, or entirely on the remote device.

[0090] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A method for controlling a gas water heater, characterized in that: The control method comprises the following steps: If it is monitored that the water flow rate change value of the water outlet of the gas water heater exceeds a preset threshold value within a first preset time period, the water flow rate of the water outlet corresponding to the starting point of the first preset time period is set as the initial water flow rate, the water flow rate of the water outlet corresponding to the end point of the first preset time period is set as the target water flow rate, and the water flow rate of the water outlet is adjusted to restore to the initial water flow rate; Adjusting the water flow rate of the water outlet from the initial water flow rate to the target water flow rate within a second preset time period and controlling the outlet water temperature of the water outlet to be within a preset range of the set temperature; The method of adjusting the water flow rate of the water outlet from the initial water flow rate to the target water flow rate within the second preset time period is as follows: Determining the corresponding actual adjustment time based on the water flow change value of the water outlet; adjusting the water flow rate of the water outlet from the initial water flow rate to the target water flow rate based on the actual adjustment time; Different water flow rate change values ​​correspond to different actual adjustment times, and the actual adjustment time is no longer than the second preset time period.

2. The control method of the gas water heater according to claim 1, characterized in that: If it is monitored that the water flow rate change value of the water outlet of the gas water heater exceeds a preset threshold value within a first preset time period, the water flow rate of the water outlet corresponding to the starting point of the first preset time period is set as the initial water flow rate, and the water flow rate of the water outlet corresponding to the end point of the first preset time period is set as the target water flow rate, the method further includes: Real-time monitoring of water flow changes at the outlet.

3. The control method of the gas water heater according to claim 2, characterized in that: The real-time monitoring of the water flow change value of the water outlet also includes: Real-time monitoring of water flow at the outlet; If it is monitored that the water flow rate of the water outlet exceeds the preset water flow rate, the step of real-time monitoring of the change value of the water flow rate of the water outlet is performed.

4. The control method of the gas water heater according to claim 1, characterized in that: The step of adjusting the water flow rate of the water outlet from the initial water flow rate to the target water flow rate specifically includes: Adjust the opening of the water flow regulating valve of the water heater, or adjust the water flow rate of the water outlet pipe of the water heater to achieve the water flow rate at the water outlet from the initial water flow rate to the target water flow rate.

5. The control method of the gas water heater according to claim 1, characterized in that: The controlling of the outlet water temperature to be within the preset range of the set temperature specifically includes: Real-time detection of the outlet water temperature; The combustion load of the combustion chamber is adjusted according to the real-time temperature so that the outlet water temperature is within a preset range of the set temperature.

6. The control method of the gas water heater according to claim 5, characterized in that: The step of adjusting the combustion load of the combustion chamber according to the real-time temperature so that the outlet water temperature is within a preset range of the set temperature specifically includes: The difference between the real-time temperature and the set temperature is used as a feedback parameter to adjust the combustion load through PID regulation.

7. A control device for a gas water heater, characterized in that: The control device comprises: a first control module, configured to, when detecting that a change in the water flow rate at the water outlet of the gas water heater exceeds a preset threshold value within a first preset time period, set the water flow rate at the water outlet corresponding to the starting point of the first preset time period as an initial water flow rate, set the water flow rate at the water outlet corresponding to the end point of the first preset time period as a target water flow rate, and adjust the water flow rate at the water outlet to return to the initial water flow rate; a second control module, configured to adjust the water flow rate of the water outlet from the initial water flow rate to the target water flow rate within a second preset time period and to control the outlet water temperature of the water outlet to be within a preset range of the set temperature; The second control module is specifically used to determine the corresponding actual adjustment time based on the water flow change value of the water outlet; and adjust the water flow of the water outlet from the initial water flow to the target water flow based on the actual adjustment time; wherein, different water flow change values ​​correspond to different actual adjustment times, and the actual adjustment time is not greater than the second preset time period.

8. A gas water heater comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the control method according to any one of claims 1 to 6 is implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the control method according to any one of claims 1 to 6 is implemented.

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