Method, system, water heater and medium for determining a start-up flow threshold for a water heater

Abstract

The present disclosure is a kind of water heater start-up flow threshold determination method, system, water heater and medium, and the start-up flow threshold determination method comprises: obtaining the minimum start-up water flow of the water heater;Under the first preset condition, the first water flow of the water heater is obtained;The first preset condition is that the other water-using equipment of the pipeline where the water heater is located uses cold water, and the hot water flow of the water heater is zero;Under the second preset condition, the second water flow of the water heater is obtained;The second preset condition is that the water heater runs with the minimum hot water outlet flow;According to the minimum start-up water flow, the first water flow and the second water flow, the start-up flow threshold for triggering the ignition of the water heater is determined.The ignition action of the water heater can be normally triggered under the condition that the pipeline water pressure is too high or too low after the start-up flow threshold is determined, which avoids the waste of gas caused by the mis-triggering of the ignition, and also ensures that the water heater can normally trigger the ignition to ensure good user experience.

Description

Technical Field

[0001] This disclosure relates to the field of home appliance technology, and in particular to a method, system, water heater, and medium for determining the start-up flow threshold of a water heater. Background Technology

[0002] Most water heaters on the market operate by setting a fixed water flow threshold. If the water flow in the pipes exceeds this threshold, the water heater ignites. However, since hot and cold water pipes are typically connected in homes, this can lead to cross-contamination: water flows between the water heater pipes and other water-using pipes (such as toilet pipes in the bathroom or kitchen water pipes). Cross-contamination causes unstable water pressure in the household, which in turn can cause abnormal ignition of the water heater, resulting in a poor user experience. Summary of the Invention

[0003] The problem to be solved by this disclosure is to overcome the defects of abnormal ignition in water heaters in the prior art, and to provide a method, system, water heater and medium for determining the start-up flow threshold of a water heater.

[0004] This disclosure solves the above-mentioned technical problems through the following technical solution:

[0005] This disclosure provides a method for determining the start-up flow threshold of a water heater, the method comprising:

[0006] Obtain the minimum starting water flow rate of the water heater;

[0007] Under a first preset condition, the first water flow rate of the water heater is obtained; the first preset condition is that other water-using devices in the pipeline where the water heater is located use cold water, and the hot water flow rate of the water heater is zero.

[0008] Under a second preset condition, the second water flow rate of the water heater is obtained; the second preset condition is that the water heater is running at the minimum hot water output.

[0009] The starting flow threshold for triggering water heater ignition is determined based on the minimum starting water flow, the first water flow, and the second water flow.

[0010] Preferably, obtaining the minimum starting water flow rate of the water heater includes:

[0011] Obtain the minimum heating power of the water heater;

[0012] The minimum temperature difference of the water in the water heater is obtained, and the minimum temperature difference is determined by the difference between the inlet water temperature and the minimum set temperature;

[0013] The minimum starting water flow rate is determined based on the minimum heating power and the minimum temperature difference.

[0014] Preferably, obtaining the first water flow rate of the water heater includes:

[0015] Monitor the real-time water flow rate of the pipes inside the water heater during a first preset time period;

[0016] The maximum value among the real-time water flow rates is taken as the first water flow rate.

[0017] Preferably, obtaining the second water flow rate of the water heater includes:

[0018] Monitor the real-time water flow rate of the pipes inside the water heater during a second preset time period;

[0019] The second water flow rate is determined based on the water flow rate value in the real-time water flow rate where the fluctuation amplitude does not exceed the fluctuation amplitude threshold.

[0020] Preferably, determining the starting flow threshold for triggering water heater ignition based on the minimum starting water flow rate, the first water flow rate, and the second water flow rate includes:

[0021] Determine the reference value of the starting water flow rate based on the first water flow rate and the second water flow rate;

[0022] The starting flow rate threshold is determined based on the comparison results between the minimum starting water flow rate and the first water flow rate, the second water flow rate, and the starting water flow rate reference value.

[0023] Preferably, determining the start-up flow rate threshold based on the comparison result between the minimum start-up water flow rate and the first water flow rate, the second water flow rate, and the start-up water flow rate reference value includes:

[0024] If the first water flow rate is greater than the minimum starting water flow rate, then the starting water flow rate reference value is used as the starting flow rate threshold.

[0025] If the minimum starting water flow rate is greater than or equal to the first water flow rate, and the minimum starting water flow rate is less than the starting water flow rate reference value, then the starting water flow rate reference value is used as the starting flow rate threshold.

[0026] Preferably, determining the start-up flow rate threshold based on the comparison result of the minimum start-up water flow rate with the first water flow rate, the second water flow rate, and the start-up water flow rate reference value further includes:

[0027] If the minimum starting water flow rate is greater than or equal to the first water flow rate, and the minimum starting water flow rate is greater than or equal to the starting water flow rate reference value, and the minimum starting water flow rate is greater than or equal to the second water flow rate, then the second water flow rate is used as the starting flow rate threshold.

[0028] If the minimum starting water flow rate is greater than or equal to the first water flow rate, and the minimum starting water flow rate is greater than or equal to the starting water flow rate reference value, and the minimum starting water flow rate is less than the second water flow rate, then the minimum starting water flow rate is used as the starting flow rate threshold.

[0029] This disclosure also provides a system for determining the start-up flow threshold of a water heater, the system comprising:

[0030] The acquisition module is used to acquire the minimum starting water flow rate of the water heater;

[0031] The acquisition module is further configured to acquire the first water flow rate of the water heater under a first preset condition; the first preset condition is that other water-using devices in the pipeline where the water heater is located use cold water, and the hot water flow rate of the water heater is zero.

[0032] The acquisition module is further configured to acquire the second water flow rate of the water heater under a second preset condition; the second preset condition is that the water heater is running at the minimum hot water output.

[0033] The determining module is used to determine the starting flow threshold for triggering the water heater ignition based on the minimum starting water flow, the first water flow, and the second water flow.

[0034] Preferably, the acquisition module includes:

[0035] The acquisition unit is used to acquire the minimum heating power of the water heater;

[0036] The acquisition unit is also used to acquire the minimum temperature difference of the water in the water heater, the minimum temperature difference being determined by the difference between the inlet water temperature and the minimum set temperature.

[0037] The first determining unit is used to determine the minimum starting water flow rate based on the minimum heating power and the minimum temperature difference.

[0038] Preferably, the acquisition module includes:

[0039] The monitoring unit is used to monitor the real-time water flow rate of the pipes inside the water heater during a first preset time period.

[0040] The monitoring unit is also used to take the maximum value of the real-time water flow as the first water flow.

[0041] Preferably, the acquisition module includes:

[0042] The monitoring unit is used to monitor the real-time water flow rate of the pipes inside the water heater during a second preset time period.

[0043] The monitoring unit is also used to determine the second water flow based on the water flow value in the real-time water flow where the fluctuation amplitude does not exceed the fluctuation amplitude threshold.

[0044] Preferably, the determining module includes:

[0045] The second determining unit is used to determine a reference value for the start-up water flow based on the first water flow and the second water flow.

[0046] The second determining unit is further configured to determine the starting flow rate threshold based on the comparison result between the minimum starting water flow rate and the first water flow rate, the second water flow rate, and the starting water flow rate reference value.

[0047] Preferably, the second determining unit is further configured to include:

[0048] If the first water flow rate is greater than the minimum starting water flow rate, then the starting water flow rate reference value is used as the starting flow rate threshold.

[0049] If the minimum starting water flow rate is greater than or equal to the first water flow rate, and the minimum starting water flow rate is less than the starting water flow rate reference value, then the starting water flow rate reference value is used as the starting flow rate threshold.

[0050] Preferably, the second determining unit is further configured to include:

[0051] If the minimum starting water flow rate is greater than or equal to the first water flow rate, and the minimum starting water flow rate is greater than or equal to the starting water flow rate reference value, and the minimum starting water flow rate is greater than or equal to the second water flow rate, then the second water flow rate is used as the starting flow rate threshold.

[0052] If the minimum starting water flow rate is greater than or equal to the first water flow rate, and the minimum starting water flow rate is greater than or equal to the starting water flow rate reference value, and the minimum starting water flow rate is less than the second water flow rate, then the minimum starting water flow rate is used as the starting flow rate threshold.

[0053] This disclosure also provides a water heater, including a memory, a processor, and a computer program stored in the memory and for running on the processor, wherein the processor executes the computer program to implement the aforementioned method for determining the start-up flow threshold of the water heater.

[0054] This disclosure also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the aforementioned method for determining the start-up flow threshold of a water heater.

[0055] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this disclosure.

[0056] The positive and progressive effects of this disclosure are as follows: the starting water flow rate is determined based on the minimum starting water flow rate, the first water flow rate, and the first water flow rate, and is used as the water flow rate threshold for triggering the water heater ignition. This ensures that the water heater can be ignited normally when the water pressure in the pipe is too high or too low. On the one hand, this avoids gas waste caused by erroneous ignition, and on the other hand, it ensures that the water heater can be ignited normally, thus ensuring a good user experience. Attached Figure Description

[0057] Figure 1 This is a flowchart of the method for determining the start-up flow threshold of a water heater according to Embodiment 1 of this disclosure.

[0058] Figure 2 This is a flowchart of a specific implementation of step S101 in the method for determining the start-up flow threshold of a water heater according to Embodiment 1 of this disclosure.

[0059] Figure 3 This is a flowchart of a specific implementation of step S102 in the method for determining the start-up flow threshold of a water heater according to Embodiment 1 of this disclosure.

[0060] Figure 4 This is a flowchart of a specific implementation of step S103 in the method for determining the start-up flow threshold of a water heater according to Embodiment 1 of this disclosure.

[0061] Figure 5 This is a flowchart of a specific implementation of step S104 in the method for determining the start-up flow threshold of a water heater according to Embodiment 1 of this disclosure.

[0062] Figure 6 This is a schematic diagram of the system for determining the start-up flow threshold of a water heater according to Embodiment 2 of this disclosure.

[0063] Figure 7 This is a schematic diagram of the structure of the water heater according to Embodiment 3 of this disclosure. Detailed Implementation

[0064] The present disclosure is further illustrated below by way of embodiments, but the present disclosure is not limited to the scope of the embodiments described herein.

[0065] Example 1

[0066] Figure 1A flowchart illustrating a method for determining the start-up flow threshold of a water heater, provided as an exemplary embodiment of this disclosure, includes the following steps:

[0067] S101. Obtain the minimum starting water flow rate of the water heater.

[0068] Among them, reference Figure 2 Step S101 includes the following steps:

[0069] S1011. Obtain the minimum heating power of the water heater.

[0070] In this step, the minimum heating power is determined by the water heater itself, specifically when the proportional valve of the gas inlet is at its minimum opening, i.e., when the gas intake is at its minimum.

[0071] S1012. Obtain the minimum temperature difference of the water in the water heater. The minimum temperature difference is determined by the difference between the inlet water temperature and the minimum set temperature.

[0072] In this step, the minimum temperature difference of the water in the water heater is the difference between the inlet water temperature and the minimum set temperature. For example, when the inlet water temperature is 0℃ and the user sets the minimum set temperature to 35℃, the minimum temperature difference is 35℃.

[0073] S1013. Determine the minimum starting water flow rate based on the minimum heating power and the minimum temperature difference.

[0074] In this step, the minimum starting water flow rate is to prevent scalding of the user. When setting the starting flow rate threshold in subsequent steps, it should never be less than this minimum starting water flow rate to ensure that the outlet water temperature does not exceed the set temperature, thus preventing scalding or discomfort to the user. Optionally, the formula for calculating the minimum starting water flow rate is: Q min =k1*P min / T min .

[0075] Among them, Q min The minimum starting water flow rate is given by k1, where k1 is a unit coefficient and P is the minimum starting water flow rate. min For minimum heating power, T min This represents the minimum temperature difference. In one embodiment, k1 is 1 L·℃ / W·min (liters·degrees Celsius / watts·minutes). It should be understood that the above formula is only a specific example, and the above variables or other parameters can be adjusted or added or removed according to actual needs.

[0076] S102. Under the first preset condition, obtain the first water flow rate of the water heater; the first preset condition is that other water-using devices in the pipeline where the water heater is located use cold water, and the hot water flow rate of the water heater is zero.

[0077] In this step, the first preset condition is a condition set to obtain the first water flow rate. This condition is to obtain the impact of water pressure changes in other pipes on the water flow rate in the water heater when the water heater is not producing hot water. It should be understood that the principle of water pressure changes affecting the water flow rate in the water heater is as follows: when the water heater is connected to other water-using appliances (e.g., kitchen faucets, dishwashers, toilets, etc.), the water pressure in the pipes changes when these appliances use a large amount of water. Since these appliances are interconnected through pipes, changes in water pressure in the pipes will affect the water flow rate in the water heater, and may even lead to adverse consequences such as "water leakage".

[0078] Optionally, refer to Figure 3 Step S102 includes the following steps:

[0079] S1021. Monitor the real-time water flow rate of the water heater's internal pipes during the first preset time period.

[0080] In this step, the real-time water flow is monitored by a water flow sensor. It should be understood that the first preset time period can be adjusted according to actual needs.

[0081] S1022. Take the maximum value in the real-time water flow as the first water flow.

[0082] In this step, the maximum value of the collected real-time water flow can be selected directly from all real-time water flow values, or the maximum value in a local interval of the real-time water flow can be selected as the maximum value.

[0083] S103. Under the second preset condition, obtain the second water flow rate of the water heater; the second preset condition is that the water heater operates at the minimum hot water output.

[0084] Optionally, refer to Figure 4 Step S103 includes the following steps:

[0085] S1031. Monitor the real-time water flow rate of the water heater's internal pipes during the second preset time period.

[0086] In this step, the real-time water flow is monitored by a water flow sensor. It should be understood that the first preset time period can be adjusted according to actual needs.

[0087] S1032. Determine the second water flow rate based on the water flow rate value whose fluctuation amplitude does not exceed the fluctuation amplitude threshold in the real-time water flow rate.

[0088] In this step, the second water flow rate is taken as the water flow rate in a stable state, that is, the value of the real-time water flow rate when the fluctuation amplitude does not exceed the fluctuation amplitude threshold. A specific method for determining this value is, for example, after obtaining the real-time water flow rate, selecting the data within the stable water flow range as the sampling interval, and then randomly selecting one value from the sampling interval as the second water flow rate, or selecting the average value of the sampling interval as the second water flow rate. Optionally, the fluctuation amplitude can be measured by variance or standard deviation. It should be understood that the fluctuation amplitude can be calculated using other methods to measure the dispersion of data, and the fluctuation amplitude threshold can be adjusted according to actual needs.

[0089] S104. Determine the starting flow threshold for triggering water heater ignition based on the minimum starting water flow, the first water flow, and the second water flow.

[0090] Optionally, the starting flow threshold for triggering water heater ignition is determined based on the minimum starting water flow, the first water flow, and the second water flow, including the following steps:

[0091] Reference Figure 5 Step S104 includes the following steps:

[0092] S1041. Determine the reference value of the starting water flow rate based on the first water flow rate and the second water flow rate.

[0093] In this step, the optional formula for calculating the reference value of the starting water flow rate is: Q ref = k2*(Q1+Q2).

[0094] Among them, Q ref The starting water flow rate is set as a reference value, k2 is a reference coefficient, Q1 is the first water flow rate, and Q2 is the second water flow rate. In one embodiment, k2 is 0.5. It should be understood that the above formula is only a specific example, and the above variables or other parameters can be adjusted or added or removed according to actual needs.

[0095] S1042. Determine the starting flow threshold based on the comparison results of the minimum starting water flow rate with the first water flow rate, the second water flow rate, and the reference value of the starting water flow rate.

[0096] Optionally, the starting flow rate threshold is determined based on the comparison results between the minimum starting water flow rate and the first water flow rate, the second water flow rate, and the reference value of the starting water flow rate, including the following four cases:

[0097] Scenario 1: If the first water flow rate is greater than the minimum starting water flow rate, then the starting water flow rate reference value will be used as the starting flow rate threshold.

[0098] Scenario 2: If the minimum starting water flow rate is greater than or equal to the first water flow rate, and the minimum starting water flow rate is less than the starting water flow rate reference value, then the starting water flow rate reference value will be used as the starting flow rate threshold.

[0099] The above scenarios 1 and 2 ensure that the starting flow threshold is greater than the first water flow, so that the water heater will not be falsely triggered due to changes in water flow caused by other water-using devices.

[0100] Scenario 3: If the minimum starting water flow rate is greater than or equal to the first water flow rate, and the minimum starting water flow rate is greater than or equal to the reference value of the starting water flow rate, and the minimum starting water flow rate is greater than or equal to the second water flow rate, then the second water flow rate shall be used as the starting flow rate threshold.

[0101] Scenario 4: If the minimum starting water flow rate is greater than or equal to the first water flow rate, and the minimum starting water flow rate is greater than or equal to the reference value of the starting water flow rate, and the minimum starting water flow rate is less than the second water flow rate, then the minimum starting water flow rate will be used as the starting flow rate threshold.

[0102] Situations 3 and 4 above ensure that the starting flow threshold can trigger ignition normally even under low water pressure. Furthermore, ensuring the starting flow threshold is not lower than the minimum starting water flow prevents scalding or discomfort caused by excessively high water temperature.

[0103] In the above embodiments, the activation flow threshold can ensure that the water flow threshold for triggering the water heater ignition is kept within a suitable range. On the one hand, this avoids gas waste caused by accidental ignition, and on the other hand, it ensures that the water heater can trigger ignition normally, thus ensuring a good user experience.

[0104] Example 2

[0105] Reference Figure 6 This is a schematic diagram of a system for determining the start-up flow threshold of a water heater, provided as an exemplary embodiment of this disclosure. This system corresponds to the aforementioned method for determining the start-up flow threshold of a water heater. The system for determining the start-up flow threshold includes:

[0106] Module 21 is used to obtain the minimum starting water flow of the water heater;

[0107] The acquisition module 21 is also used to acquire the first water flow rate of the water heater under the first preset condition; the first preset condition is that other water-using devices in the pipeline where the water heater is located use cold water, and the hot water flow rate of the water heater is zero.

[0108] The acquisition module 21 is also used to acquire the second water flow rate of the water heater under the second preset condition; the second preset condition is that the water heater is running at the minimum hot water output.

[0109] The determining module 22 is used to determine the starting flow threshold for triggering the water heater ignition based on the minimum starting water flow, the first water flow, and the second water flow.

[0110] Optionally, module 21 includes:

[0111] Acquisition unit 211 is used to acquire the minimum heating power of the water heater;

[0112] The acquisition unit 211 is also used to acquire the minimum temperature difference of the water in the water heater, which is determined by the difference between the inlet water temperature and the minimum set temperature.

[0113] The first determining unit 212 is used to determine the minimum starting water flow rate based on the minimum heating power and the minimum temperature difference.

[0114] Optionally, module 21 includes:

[0115] The monitoring unit 213 is used to monitor the real-time water flow rate of the pipes inside the water heater during a first preset time period.

[0116] The monitoring unit 213 is also used to take the maximum value in the real-time water flow as the first water flow.

[0117] Optionally, module 21 includes:

[0118] The monitoring unit 213 is used to monitor the real-time water flow rate of the pipes inside the water heater during a second preset time period.

[0119] The monitoring unit 213 is also used to determine the second water flow based on the water flow value whose fluctuation amplitude does not exceed the fluctuation amplitude threshold in the real-time water flow.

[0120] Optionally, module 22 is defined, including:

[0121] The second determining unit 221 is used to determine a reference value for the start-up water flow based on the first water flow and the second water flow.

[0122] The second determining unit 221 is also used to determine the starting flow threshold based on the comparison results of the minimum starting water flow with the first water flow, the second water flow and the starting water flow reference value.

[0123] Optionally, the second determining unit 221 is further configured to include:

[0124] If the first water flow rate is greater than the minimum starting water flow rate, then the starting water flow rate reference value will be used as the starting flow rate threshold.

[0125] If the minimum starting water flow rate is greater than or equal to the first water flow rate, and the minimum starting water flow rate is less than the starting water flow rate reference value, then the starting water flow rate reference value will be used as the starting flow rate threshold.

[0126] Optionally, the second determining unit 221 is further configured to include:

[0127] If the minimum starting water flow rate is greater than or equal to the first water flow rate, and the minimum starting water flow rate is greater than or equal to the starting water flow rate reference value, and the minimum starting water flow rate is greater than or equal to the second water flow rate, then the second water flow rate will be used as the starting flow rate threshold.

[0128] If the minimum starting water flow rate is greater than or equal to the first water flow rate, and the minimum starting water flow rate is greater than or equal to the reference value of the starting water flow rate, and the minimum starting water flow rate is less than the second water flow rate, then the minimum starting water flow rate will be used as the starting flow rate threshold.

[0129] The above system ensures that the water flow threshold for triggering water heater ignition is kept within a suitable range. On the one hand, this avoids gas waste caused by accidental ignition, and on the other hand, it ensures that the water heater can ignite normally, thus guaranteeing a good user experience.

[0130] Example 3

[0131] Figure 7 This is a schematic diagram of a water heater provided in this embodiment. The water heater includes a memory, a processor, and a computer program stored in the memory and used to run on the processor. When the processor executes the program, it implements the method for determining the start-up flow threshold of the water heater provided in any of the above embodiments. Figure 7 The water heater 300 shown is merely an example and should not be construed as limiting the functionality and scope of use of the embodiments disclosed herein.

[0132] Reference Figure 7 The water heater 300 can be represented as a general-purpose computing device, such as a server device. The components of the water heater 300 may include, but are not limited to: at least one processor 301, at least one memory 302, and a bus 303 connecting different system components (including memory 302 and processor 301).

[0133] Bus 303 includes a data bus, an address bus, and a control bus.

[0134] The memory 302 may include volatile memory, such as random access memory (RAM) 321 and / or cache memory 322, and may further include read-only memory (ROM) 323.

[0135] The memory 302 may also include a program / utility 325 having a set (at least one) of program modules 324, including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0136] The processor 301 executes various functional applications and data processing by running computer programs stored in the memory 302, such as the method for determining the start-up flow threshold of a water heater according to embodiments of the present disclosure.

[0137] The water heater 300 can also communicate with one or more external devices 304 (e.g., keyboard, pointing device, etc.). This communication can be performed via input / output (I / O) interface 305. Furthermore, the model-generated device 300 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 306. As shown in the figure, network adapter 306 communicates with other modules of the model-generated device 300 via bus 303. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with the model-generated device 300, 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.

[0138] It should be noted that although several units / modules or sub-units / modules of the water heater have been mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of this disclosure, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided and embodied by multiple units / modules.

[0139] Example 4

[0140] This embodiment also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method for determining the start-up flow threshold of a water heater provided in any of the above embodiments.

[0141] The readable storage medium may be more specifically adopted, including but not limited to: portable disk, hard disk, random access memory, read-only memory, erasable programmable read-only memory, optical storage device, magnetic storage device, or any suitable combination thereof.

[0142] In a possible implementation, this disclosure can also be implemented as a program product comprising program code that, when the program product is run on a terminal device, causes the terminal device to execute the method for determining the start-up flow threshold of the water heater provided in any of the above embodiments.

[0143] The program code for executing this disclosure can be written in any combination of one or more programming languages, and the program code can be executed entirely on a user device, partially on a user device, as a stand-alone software package, partially on a user device and partially on a remote device, or entirely on a remote device.

[0144] While specific embodiments of this disclosure have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this disclosure is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this disclosure, but all such changes and modifications fall within the scope of protection of this disclosure.

Claims

1. A method for determining the start-up flow threshold of a water heater, characterized in that, The method for determining the startup traffic threshold includes: Obtain the minimum starting water flow rate of the water heater; Under a first preset condition, the first water flow rate of the water heater is obtained; the first preset condition is that other water-using devices in the pipeline where the water heater is located use cold water, and the hot water flow rate of the water heater is zero. Under a second preset condition, the second water flow rate of the water heater is obtained; the second preset condition is that the water heater is running at the minimum hot water output. Determining the starting flow threshold for triggering water heater ignition based on the minimum starting water flow, the first water flow, and the second water flow includes: determining a starting water flow reference value based on the first water flow and the second water flow; The starting flow threshold is determined based on a comparison of the minimum starting water flow rate with the first water flow rate, the second water flow rate, and a reference value for the starting water flow rate. This includes: if the first water flow rate is greater than the minimum starting water flow rate, then the reference value for the starting water flow rate is used as the starting flow threshold; if the minimum starting water flow rate is greater than or equal to the first water flow rate and less than the reference value for the starting water flow rate, then the reference value for the starting water flow rate is used as the starting flow threshold; if the minimum starting water flow rate is greater than or equal to the first water flow rate and greater than or equal to the reference value for the starting water flow rate, and greater than or equal to the second water flow rate, then the second water flow rate is used as the starting flow threshold; if the minimum starting water flow rate is greater than or equal to the first water flow rate and greater than or equal to the reference value for the starting water flow rate, and less than the second water flow rate, then the minimum starting water flow rate is used as the starting flow threshold.

2. The method for determining the start-up flow threshold of a water heater according to claim 1, characterized in that, The step of obtaining the minimum starting water flow rate of the water heater includes: Obtain the minimum heating power of the water heater; The minimum temperature difference of the water in the water heater is obtained, and the minimum temperature difference is determined by the difference between the inlet water temperature and the minimum set temperature; The minimum starting water flow rate is determined based on the minimum heating power and the minimum temperature difference.

3. The method for determining the start-up flow threshold of a water heater according to claim 1, characterized in that, The step of obtaining the first water flow rate of the water heater includes: Monitor the real-time water flow rate of the pipes inside the water heater during a first preset time period; The maximum value among the real-time water flow rates is taken as the first water flow rate.

4. The method for determining the start-up flow threshold of a water heater according to claim 1, characterized in that, The step of obtaining the second water flow rate of the water heater includes: Monitor the real-time water flow rate of the pipes inside the water heater during a second preset time period; The second water flow rate is determined based on the water flow rate value in the real-time water flow rate where the fluctuation amplitude does not exceed the fluctuation amplitude threshold.

5. A system for determining the start-up flow threshold of a water heater, characterized in that, The system for determining the startup traffic threshold includes: The acquisition module is used to acquire the minimum starting water flow rate of the water heater; The acquisition module is further configured to acquire the first water flow rate of the water heater under a first preset condition; the first preset condition is that other water-using devices in the pipeline where the water heater is located use cold water, and the hot water flow rate of the water heater is zero. The acquisition module is further configured to acquire the second water flow rate of the water heater under a second preset condition; the second preset condition is that the water heater is running at the minimum hot water output. The determining module is used to determine the starting flow threshold for triggering the water heater ignition based on the minimum starting water flow, the first water flow, and the second water flow. The determining module includes a second determining unit, used to determine a reference value for the starting water flow based on the first water flow and the second water flow; and to determine the starting flow threshold based on a comparison result between the minimum starting water flow and the first water flow, the second water flow, and the reference value for the starting water flow. The second determining unit is further configured to: if the first water flow rate is greater than the minimum starting water flow rate, then use the starting water flow rate reference value as the starting water flow rate threshold; if the minimum starting water flow rate is greater than or equal to the first water flow rate, and the minimum starting water flow rate is less than the starting water flow rate reference value, then use the starting water flow rate reference value as the starting water flow rate threshold; if the minimum starting water flow rate is greater than or equal to the first water flow rate, and the minimum starting water flow rate is greater than or equal to the starting water flow rate reference value, and the minimum starting water flow rate is greater than or equal to the second water flow rate, then use the second water flow rate as the starting water flow rate threshold; if the minimum starting water flow rate is greater than or equal to the first water flow rate, and the minimum starting water flow rate is greater than or equal to the starting water flow rate reference value, and the minimum starting water flow rate is less than the second water flow rate, then use the minimum starting water flow rate as the starting water flow rate threshold.

6. A water heater, comprising a memory, a processor, and a computer program stored in the memory and for running on the processor, characterized in that, When the processor executes the computer program, it implements the method for determining the start-up flow threshold of the water heater as described in any one of claims 1 to 4.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the method for determining the start-up flow threshold of the water heater as described in any one of claims 1 to 4.

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