Control method of a gas water heating device and gas water heating device

Abstract

This specification relates to the technical field of water heating devices, specifically disclosing a control method for a gas-fired water heating device and the gas-fired water heating device itself. The gas-fired water heating device includes a combustion device comprising at least two sets of burners. The control method for the gas-fired water heating device includes: determining whether the currently required load is within a pre-acquired common load range when a first preset condition is met; if so, controlling the burners or burner combinations corresponding to the common load segments to perform combustion; the power range corresponding to the common load segments includes the common load range. This solution can improve the temperature stability of the water heater and enhance the user experience.

Description

Technical Field

[0001] This specification relates to the technical field of water heating devices, and in particular to a control method for a gas-fired water heating device and the gas-fired water heating device itself. Background Technology

[0002] Most gas-fired water heaters currently use segmented combustion. Segmented combustion gas-fired water heaters divide multiple burners into segments, and the combustion power is controlled by the number of burners participating in the combustion. Each segment may include one burner or a combination of multiple burners.

[0003] When users' water demand or water environment changes, the existing segmented technology solution usually requires segmentation, which leads to large fluctuations in the outlet water temperature and thus affects the user's constant temperature experience.

[0004] There is currently no effective solution to the above problems. Summary of the Invention

[0005] This specification provides a control method and a gas-fired water heater, which can solve the problem in the prior art where gas-fired water heaters are prone to frequent switching when water demand or water environment changes, resulting in large fluctuations in outlet water temperature, and can improve the user's constant temperature experience.

[0006] This specification provides a control method for a gas-fired water heater, the gas-fired water heater including a combustion device, the combustion device including at least two sets of burners; the control method for the gas-fired water heater includes:

[0007] If the first preset condition is met, determine whether the current required load is within the range of commonly used loads obtained in advance;

[0008] If so, then control the burner or burner combination corresponding to the commonly used segment to perform combustion; the power range corresponding to the commonly used segment includes the commonly used load range.

[0009] In one embodiment, the first preset condition includes: receiving a user's water usage signal.

[0010] In one embodiment, determining whether the currently required load is within the range of pre-acquired common loads includes:

[0011] Obtain the common load range corresponding to the gas-fired water heater;

[0012] If the commonly used load range corresponding to the gas-fired water heater is obtained, determine whether the currently required load is within the commonly used load range.

[0013] In one embodiment, the control method for the gas-fired water heater further includes:

[0014] If the normal load range corresponding to the gas water heater is not obtained, the combustion device is controlled to burn in a preset segmented manner.

[0015] In one embodiment, the control method for the gas-fired water heater further includes:

[0016] If the common load range corresponding to the gas water heater is not obtained, record the user water usage data of the gas water heater within a preset period.

[0017] Based on the user water usage data within the preset period, the commonly used load range is determined.

[0018] In one embodiment, the control method for the gas-fired water heater further includes:

[0019] Given a common load range, obtain the power range corresponding to each segment in the multiple segments of the preset segmentation method;

[0020] If the power range corresponding to each segment does not include the commonly used load range, a commonly used segment is generated based on the commonly used load range.

[0021] In one embodiment, the control method for the gas-fired water heater further includes:

[0022] If the power range of at least one of the plurality of segments includes the commonly used load range, then any one of the at least one segments shall be identified as the commonly used segment.

[0023] In one embodiment, the control method for the gas-fired water heater further includes:

[0024] If the power range of at least one of the multiple segments includes the commonly used load range, the segment with the largest upper power limit among the at least one segment shall be determined as the commonly used segment.

[0025] In one embodiment, the control method for the gas-fired water heater further includes:

[0026] If the power range of at least one of the multiple segments includes the commonly used load range, the segment with the largest power range span among the at least one segment shall be determined as the commonly used segment.

[0027] In one embodiment, the control method for the gas-fired water heater further includes:

[0028] The user water usage data of the gas-fired water heater within a preset period is recorded once every preset time interval to update the commonly used load range.

[0029] In one embodiment, the control method for the gas-fired water heater further includes:

[0030] Under the condition that the second preset condition is met, the user water usage data of the gas water heater within a preset period starting from the current moment is recorded in order to update the commonly used load range.

[0031] In one embodiment, the second preset condition includes at least one of the following:

[0032] The temperature difference exceeds the first preset temperature difference range; the temperature difference is the difference between the set temperature and the inlet water temperature;

[0033] Water consumption changes beyond the preset range.

[0034] In one embodiment, the user water usage data within the preset period includes the inlet water temperature, set temperature, and inlet water flow rate at multiple times within the preset period.

[0035] In one embodiment, determining and storing a commonly used load range based on user water usage data within the preset period includes:

[0036] Based on the inlet water temperature, set temperature and inlet water flow rate at multiple times within the preset period, the load value at multiple times within the preset period is calculated to obtain the load data within the preset period.

[0037] Based on the load data within the preset period, the commonly used load range is determined.

[0038] In one embodiment, determining a commonly used load range based on load data within the preset period includes:

[0039] Load data that meets the third preset condition is selected from the load data within the preset period;

[0040] Based on the selected load data, the commonly used load range is determined.

[0041] In one embodiment, the third preset condition includes at least one of the following:

[0042] The load value is within the preset load range;

[0043] The water inflow rate is within the preset range;

[0044] The temperature difference is less than the preset temperature difference; the temperature difference is the difference between the set temperature and the inlet water temperature.

[0045] In one embodiment, determining a commonly used load range based on load data within the preset period includes:

[0046] The preset period is divided into multiple time periods;

[0047] Based on the load data within each of the multiple time periods, the commonly used load range corresponding to each time period is determined.

[0048] In one embodiment, the common load range includes the common load range corresponding to each time period in multiple time periods;

[0049] Accordingly, obtaining the common load range corresponding to the gas-fired water heater includes:

[0050] Determine the target time period corresponding to the current moment;

[0051] Obtain the typical load range of the gas-fired water heater during the target time period.

[0052] In one embodiment, the control method for the gas-fired water heater further includes:

[0053] If it is determined that the current required load is not within the range of the commonly used load obtained in advance, the combustion device is controlled to burn in a preset segmented manner.

[0054] In one embodiment, the control method for the gas-fired water heater further includes: when controlling the combustion device to burn in a preset segmented manner...

[0055] If the fourth preset condition is met, determine whether the current required load is within the range of the commonly used load.

[0056] When the required load is determined to be within the range of the commonly used load, the combustion device is controlled to switch to the burner or burner combination corresponding to the commonly used section for combustion.

[0057] In one embodiment, the fourth preset condition includes at least one of the following:

[0058] The change in influent flow rate or the change in effluent flow rate exceeds the first preset flow range;

[0059] The temperature difference exceeds the second preset temperature difference range; the temperature difference is the difference between the set temperature and the inlet water temperature.

[0060] In one embodiment, the control method for the gas-fired water heater further includes:

[0061] When controlling the burner or burner combination corresponding to the commonly used segment to perform combustion, if the fifth preset condition is met, it is determined whether the current required load is within the range of the commonly used load.

[0062] If it is determined that the current required load is within the normal load range, the opening degree of the gas proportional valve of the gas water heater is controlled based on the current required load.

[0063] In one embodiment, the control method for the gas-fired water heater further includes:

[0064] If it is determined that the current required load is not within the range of the commonly used load, the combustion device is controlled to switch to combustion according to a preset segmented mode.

[0065] In one embodiment, the fifth preset condition includes at least one of the following:

[0066] The change in influent flow rate or the change in effluent flow rate exceeds the second preset flow rate range;

[0067] The temperature difference exceeds the third preset temperature difference range; the temperature difference is the difference between the set temperature and the inlet water temperature.

[0068] This specification also provides an embodiment of a gas-fired hot water device, comprising:

[0069] In one embodiment, the gas-fired water heater further includes: at least two gas supply channels that can be independently opened and closed; the at least two gas supply channels are configured in a one-to-one correspondence with the at least two sets of burners;

[0070] The at least two sets of burners include a first set of burners and a second set of burners;

[0071] If the required load is within the range of the pre-obtained common load, and the burner or burner combination corresponding to the common segment includes the first group of burners and the second group of burners, then the first group of burners and the second group of burners are controlled to burn simultaneously.

[0072] In one embodiment, the at least two sets of burners further include a third set of burners located between the first set of burners and the second set of burners;

[0073] The third group of burners can be ignited by the first group of burners or the second group of burners that are in a state of combustion.

[0074] In one embodiment, if the burner or burner combination corresponding to the commonly used segment includes the third group of burners, and the current required load is within the range of the pre-acquired common load, then the first group of burners or the second group of burners is controlled to start combustion. After the first group of burners or the second group of burners in the combustion state ignites the third group of burners, the first group of burners and / or the second group of burners are controlled to remain in combustion or be turned off.

[0075] In one embodiment, the at least two sets of burners further include a third set of burners and a fourth set of burners located between the first set of burners and the second set of burners;

[0076] The third group of burners and the fourth group of burners can be ignited by the first group of burners and the second group of burners, which are in a state of combustion, respectively.

[0077] In one embodiment, if the current required load is within the range of a pre-obtained common load, and the burner or burner combination corresponding to the common segment includes the third group of burners and the fourth group of burners, then the first group of burners and the second group of burners are controlled to start combustion. After the first group of burners and the second group of burners, which are in the combustion state, respectively ignite the third group of burners and the fourth group of burners, the first group of burners and / or the second group of burners are controlled to remain in combustion or be turned off.

[0078] In one embodiment, the at least two sets of burners further include a fifth set of burners located between the third set of burners and the fourth set of burners;

[0079] The fifth group of burners can be ignited by the third group of burners or the fourth group of burners that are in a state of combustion; the third group of burners and the fourth group of burners can be ignited by the fifth group of burners that are in a state of combustion.

[0080] In one embodiment, if the current required load is within the range of a pre-acquired common load, and the burner or burner combination corresponding to the common segment includes the fifth group of burners, then the first group of burners or the second group of burners is controlled to start combustion, and the first group of burners or the second group of burners in combustion state is controlled to ignite the third group of burners or the fourth group of burners. After the third group of burners or the fourth group of burners in combustion state ignites the fifth group of burners, the first group of burners, the second group of burners, the third group of burners, and / or the fourth group of burners are controlled to remain in combustion or be turned off.

[0081] In one embodiment, the first group of burners has the same power range as the second group of burners; the third group of burners has the same power range as the fourth group of burners.

[0082] This specification also provides a control method for a gas-fired water heater, the gas-fired water heater including a combustion device, the combustion device including at least two sets of burners; the control method for the gas-fired water heater includes:

[0083] Obtain user water usage data for the gas-fired water heater within a preset period;

[0084] Based on user water usage data within the preset period, a target segmentation mode corresponding to the gas water heater is determined, and combustion control is performed based on the target segmentation mode; the target segmentation mode includes a commonly used segment; the power range corresponding to the commonly used segment includes the commonly used load range.

[0085] In one embodiment, determining the target segmentation method corresponding to the gas-fired water heater based on user water usage data within the preset period includes:

[0086] Obtain the power range corresponding to each of the at least two groups of burners;

[0087] Based on the user water consumption data within the preset period, determine the commonly used load range;

[0088] Based on the power range corresponding to each group of burners and the common load range, the target segmentation method corresponding to the gas water heating device is generated.

[0089] In one embodiment, determining the target segmentation method corresponding to the gas-fired water heater based on user water usage data within the preset period includes:

[0090] Obtain at least one preset segmentation method;

[0091] Based on the user water consumption data within the preset period, determine the commonly used load range;

[0092] Based on the user water usage data within the preset period, a target segmentation method is determined from at least one preset segmentation method.

[0093] In one embodiment, combustion control based on the target segmentation method includes:

[0094] If the first preset condition is met, determine whether the current required load is within the range of the commonly used load;

[0095] If so, then control the burner or burner combination corresponding to the commonly used segment for combustion.

[0096] This specification also provides a gas-fired water heating device, which includes a combustion device and a controller, wherein the combustion device includes at least two sets of burners;

[0097] The controller is used to: determine whether the current required load is within the pre-acquired common load range when a first preset condition is met; if so, control the burner or burner combination corresponding to the common segment to perform combustion; the power range corresponding to the common segment includes the common load range.

[0098] The technical solution in this specification has the following significant advantages:

[0099] Each time a user starts using water, the control method of the gas-fired water heater in this application can control the burner or burner combination corresponding to the commonly used segment to burn when the current required load is within the pre-acquired commonly used load range. Since the power range corresponding to the commonly used segment includes the commonly used load range, the required load may still be within the commonly used load range when the user's water demand or water environment changes. In this way, the demand can be met simply by adjusting the firepower through the gas proportional valve, without the need for segment switching operations. Therefore, temperature fluctuations can be reduced or avoided, the constant temperature effect of the water heater can be improved, and the user experience can be enhanced.

[0100] Specific embodiments of the invention are disclosed in detail below with reference to the description and accompanying drawings, indicating how the principles of the invention can be employed. It should be understood that the embodiments of the invention are not therefore limited in scope. Features described and / or shown for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0101] It should be emphasized that the term "comprising / including" as used herein refers to the presence of a feature, part, step, or component, but does not exclude the presence or addition of one or more other features, parts, steps, or components. Attached Figure Description

[0102] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, guided by the teachings of this invention, can select various possible shapes and proportions to implement the invention according to specific circumstances. In the drawings:

[0103] Figure 1 A schematic diagram of the structure of a gas-fired water heater according to one embodiment of this specification is shown;

[0104] Figure 2 A schematic diagram of the dispenser in one embodiment of this specification is shown;

[0105] Figure 3 A schematic diagram of the combustion device and distributor in one embodiment of this specification is shown;

[0106] Figure 4 A flowchart of a control method for a gas-fired hot water device according to one embodiment of this specification is shown;

[0107] Figure 5 A flowchart of a control method for a gas-fired hot water device according to one embodiment of this specification is shown;

[0108] Figure 6 A flowchart of a control method for a gas-fired hot water device according to one embodiment of this specification is shown;

[0109] Figure 7 A schematic diagram is shown illustrating the change of water outlet temperature over time during combustion in the prior art, where the temperature is controlled in a preset segmented manner.

[0110] Figure 8 A schematic diagram showing the change of outlet water temperature over time during combustion according to the target segmentation method in the embodiments of this specification is shown;

[0111] Figure 9 A schematic diagram of the control device of a gas-fired hot water device according to one embodiment of this specification is shown.

[0112] The reference numerals in the above figures are as follows:

[0113] 101. Gas valve; 102. Distributor; 103. Combustion device; 104. Heat exchanger; 105. Fan; 20. Main gas supply channel; 21. Gas supply channel; A. First gas supply channel; B. Second gas supply channel; C. Third gas supply channel; D. Fourth gas supply channel; E. Fifth gas supply channel; 201. On / off valve; 202. Nozzle; 301. Burner; 321. First ignition needle; 322. Second ignition needle; 311. First group of burners; 312. Second group of burners; 313. Third group of burners; 314. Fourth group of burners; 315. Fifth group of burners. Detailed Implementation

[0114] The principles and spirit of this specification will now be described with reference to several exemplary embodiments. It should be understood that these embodiments are given merely to enable those skilled in the art to better understand and implement this specification, and are not intended to limit the scope of this specification in any way. Rather, these embodiments are provided to make this disclosure more thorough and complete, and to fully convey the scope of this disclosure to those skilled in the art.

[0115] Those skilled in the art will recognize that the embodiments described in this specification can be implemented as a system, apparatus, method, or computer program product. Therefore, the disclosure of this specification can be specifically implemented in the following forms: entirely hardware, entirely software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.

[0116] The details of the present invention can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of the present invention described herein are for illustrative purposes only and should not be construed as limiting the invention in any way. Under the teachings of this invention, those skilled in the art can conceive of any possible modifications based on the invention, all of which should be considered within the scope of the invention. It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "mounted," "connected," and "connected" should be interpreted broadly, for example, they can refer to mechanical or electrical connections, or internal communication between two elements, and can be direct or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0117] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this specification. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0118] This manual provides a control method for a gas-fired water heater. Figure 1 A schematic diagram of the structure of a gas-fired hot water device according to an embodiment of the present invention is shown. Figure 1 As shown, a gas-fired water heater may include a gas valve 101, a distributor 102, a combustion device 103, a heat exchanger 104, and a fan 105. The gas valve 101 controls the opening and closing of the gas inlet. The distributor 102 forms a gas delivery channel, which can supply gas to the combustion device 103 when the gas valve 101 is open. The combustion device 103 may include at least two sets of burners. The distributor 102 can form at least two gas delivery channels. These at least two gas delivery channels can be opened and closed independently. The at least two gas delivery channels can be configured one-to-one with at least two sets of burners.

[0119] Figure 2 A schematic diagram of the dispenser in an embodiment of this specification is shown, such as... Figure 2As shown, the distributor 102 has a main gas supply channel 20, and at least two gas supply channels 21 are connected to the main gas supply channel 20 through corresponding through holes on the distributor 102. At least two on / off valves 201 are installed on the distributor 102, which control the opening and closing of the through holes. When the through hole is closed, the gas supply channel 21 is disconnected from the main gas supply channel 20, i.e., the gas supply channel 21 is closed. When the through hole is open, the gas supply channel 21 is connected to the main gas supply channel 20, i.e., the gas supply channel 21 is open. When the gas supply channel 21 is open, the gas is delivered to the combustion device 103 through the nozzles 202 on the distributor 102. Figure 2 Five gas supply channels 21 are illustrated in the example. Correspondingly, five sets of burners can be arranged in the combustion device, each set of burners having a corresponding gas supply channel 21. The gas supply channels 21 supply gas to the corresponding burners.

[0120] Please refer to Figure 3 This diagram illustrates the structure of the combustion device and distributor of a gas-fired hot water system according to one embodiment of this specification. Figure 3 As shown, in this embodiment, the combustion device 103 may include five sets of burners: a first set of burners 311, a second set of burners 312, a third set of burners 313, a fourth set of burners 314, and a fifth set of burners 315. The distributor 102 may include five gas supply channels: a first gas supply channel A, a second gas supply channel B, a third gas supply channel C, a fourth gas supply channel D, and a fifth gas supply channel E. Specifically, the first gas supply channel A supplies gas to the first set of burners 311; the second gas supply channel B supplies gas to the second set of burners 312; the third gas supply channel C supplies gas to the third set of burners 313; the fourth gas supply channel D supplies gas to the fourth set of burners 314; and the fifth gas supply channel E supplies gas to the fifth set of burners 315.

[0121] like Figure 3 As shown, each group of burners may include at least one burner 301. The number of nozzle rows corresponding to each gas delivery channel in the distributor is the same as the number of burners in the corresponding group of burners. Figure 3 As shown, the first group of burners 311 and the second group of burners 312 may each include two burner arrays 301. Correspondingly, the first gas supply channel A and the second gas supply channel B may each correspond to two rows of nozzles 202. The third group of burners 313 and the fourth group of burners 314 may each include three burner arrays 301. Correspondingly, the third gas supply channel C and the fourth gas supply channel D may each correspond to three rows of nozzles 202. The fifth group of burners 315 may include seven burner arrays 301. Correspondingly, the fifth gas supply channel E may correspond to seven rows of nozzles 202. Each row of nozzles 202 is used to supply gas to the corresponding burner array 301.

[0122] It is understood that the distributor can be configured with other numbers of gas delivery channels 21. For example, two gas delivery channels 21 can be configured, and the combustion device accordingly includes two sets of burners. As another example, three gas delivery channels 21 can be configured, and the combustion device accordingly includes three sets of burners. Yet another example, four gas delivery channels 21 can be configured, and the combustion device accordingly includes four sets of burners.

[0123] A blower 105 supplies air or oxygen to the combustion device 103. The combustion device 103 is used for gas combustion. The combustion device 103 is disposed opposite to the heat exchanger 104 and supplies heat energy to the heat exchanger 104. The combustion device 103 can be in a combustion state and a closed state. In the combustion state, it heats the heat exchanger 104. The heat exchanger 104 heats the water flowing through it under the heat energy supplied by the combustion device 103, thereby obtaining hot water that meets the user's temperature requirements. Alternatively, the heat exchanger 104 can be located above the combustion device 103, and the high-temperature flue gas generated by the combustion of the combustion device 103 flows through the heat exchanger 104. The entire combustion device 103 extends generally in a horizontal direction, and the heat exchanger 104 can also extend generally in the same horizontal direction corresponding to the combustion device 103.

[0124] In one embodiment, the combustion device may include a first group of burners and a second group of burners. Alternatively, the first group of burners and the second group of burners may be able to be turned on and off independently. The first group of burners may include at least one baffle burner. The second group of burners may include at least one baffle burner.

[0125] In one embodiment, the gas-fired water heating device may further include: a first ignition device disposed near a first set of burners; and a second ignition device disposed near a second set of burners. When the gas supply passage corresponding to the first set of burners is opened, and the first set of burners is started to ignite, the first ignition device can be used to ignite the first set of burners to start combustion. When the gas supply passage corresponding to the second set of burners is opened, thereby controlling the second set of burners to start combustion, the second ignition device can be used to ignite the second set of burners to start combustion. Figure 3 As shown, the first ignition device may include a first ignition needle 321. The second ignition device may include a second ignition needle 322. It is understood that when the first set of burners is in a combustion state, the first set of burners can also ignite the second set of burners to start combustion in the second set of burners.

[0126] Furthermore, in one embodiment, the combustion device may further include a third group of burners disposed between the first group of burners and the second group of burners. The third group of burners may include at least one combustor burner. The third group of burners has a corresponding gas supply passage that can be independently opened and closed. The first group of burners, the second group of burners, and the third group of burners may be arranged sequentially in a horizontal direction. The third group of burners can be ignited by either the first group of burners or the second group of burners that are in a combustion state.

[0127] Furthermore, in one embodiment, the combustion device may further include a third group of burners and a fourth group of burners disposed between the first group of burners and the second group of burners. The third group of burners may include at least one burner with a combustor. The fourth group of burners may include at least one burner with a combustor. The third group of burners and the fourth group of burners each have corresponding gas supply passages that can be independently opened and closed. The first group of burners, the second group of burners, the third group of burners, and the fourth group of burners may be arranged sequentially in a horizontal direction. The third group of burners can be ignited by either the first group of burners or the fourth group of burners that are in a combustion state. The fourth group of burners can be ignited by either the second group of burners or the third group of burners that are in a combustion state.

[0128] Furthermore, in one embodiment, the combustion device may further include a fifth group of burners disposed between the third and fourth groups of burners. The fifth group of burners may include at least one combustor. The fifth group of burners has a corresponding gas supply passage that can be independently opened and closed. The first, second, third, fourth, and fifth groups of burners may be arranged sequentially in a horizontal direction. The fifth group of burners can be ignited by the third or fourth group of burners in a combustion state. The third and fourth groups of burners can be ignited by the fifth group of burners in a combustion state.

[0129] In one embodiment, the power range of the first group of burners can be the same as that of the second group of burners. The power range of the third group of burners can be the same as that of the fourth group of burners. The power range of the fifth group of burners can be different from that of the first group of burners and / or the third group of burners. By combining the burners, different segments can be obtained, and different segments can correspond to different power ranges.

[0130] Figure 4A flowchart illustrating a control method for a gas-fired water heater according to one embodiment of this specification is provided. While this specification provides method operation steps or apparatus structures as shown in the following embodiments or figures, more or fewer operation steps or module units may be included in the method or apparatus based on conventional or non-inventive effort. In steps or structures where there is no logically necessary causal relationship, the execution order of these steps or the module structure of the apparatus is not limited to the execution order or module structure described in the embodiments and figures of this specification. When the method or module structure is applied in a practical device or end product, it can be executed sequentially or in parallel (e.g., in a parallel processor or multi-threaded processing environment, or even a distributed processing environment) according to the method or module structure shown in the embodiments or figures.

[0131] Specifically, such as Figure 4 As shown, a control method for a gas-fired water heater provided in one embodiment of this specification may include the following steps.

[0132] Step S401: If the first preset condition is met, determine whether the current required load is within the range of commonly used loads obtained in advance.

[0133] The control method in this embodiment can be applied to the controller of a gas-fired water heater. The gas-fired water heater may also include a combustion device, which may include at least two sets of burners.

[0134] In this step, if a first preset condition is met, the controller can determine whether the currently required load is within the pre-acquired normal load range. The first preset condition may include receiving a user's water usage signal, at which point the controller can determine whether the currently required load is within the pre-acquired normal load range.

[0135] The required load can be the heat load needed at the current moment. The controller can acquire the current inlet water temperature, outlet water temperature, and inlet water flow rate. Then, based on the current inlet water temperature, set temperature, and inlet water flow rate, the required load can be determined. In one embodiment, the gas-fired water heater may also include a memory, from which the controller can acquire the inlet water temperature, set temperature, and inlet water flow rate.

[0136] In one embodiment, a gas-fired water heater may include a temperature sensor and a flow sensor. The temperature sensor can detect the inlet and outlet water temperatures and send the detected temperatures to a memory for storage. The gas-fired water heater may also include an input device for user input of set temperatures, modes, and other data. The memory can also store user-input set temperatures and other data. The flow sensor can detect the inlet or outlet water flow rate and send the detected flow rate to the memory for storage.

[0137] In this embodiment, the commonly used load range can be obtained in advance. After obtaining the commonly used load range, the controller can determine whether the currently required load is within the commonly used load range.

[0138] In one embodiment, the common load range can be stored in the memory of the gas-fired water heater, and the controller can retrieve the common load range from the memory.

[0139] In another embodiment, the commonly used load range can be stored in a cloud server associated with a user identifier or a device identifier. In this embodiment, the gas-fired water heater may also include a communication module, through which the controller can obtain the commonly used load range from the cloud server. For example, the controller can send a request to the cloud server via the communication module. The request may include a user identifier or a device identifier. The controller can receive the corresponding commonly used load range from the cloud server via the communication module.

[0140] The common load range can be determined based on the water usage data of users when using gas water heaters. It is used to characterize the load range where users use gas water heaters frequently or for long periods of time.

[0141] In one embodiment, user water consumption data within a preset period can be acquired, and load data for each time point within multiple time points within the preset period can be determined based on the user water consumption data. Then, a commonly used load range can be determined based on the load data for each time point within the multiple time points.

[0142] In one exemplary embodiment, the user's commonly used load range can be determined based on the average value of the load data. For example, load data with excessively small or large load values ​​can be filtered out first, as can data with continuous water usage time less than a preset time, and data with water consumption per unit time less than a preset water consumption, resulting in filtered load data. The average load value of the filtered load data can be calculated, and the user's commonly used load range can be determined based on the average load value. For example, the load range span K can be preset. After calculating the average load value P, the commonly used load range can be determined as [PK / 2, P+K / 2].

[0143] In another exemplary embodiment, after filtering the data as described above to obtain the filtered load data, a load data curve can be generated based on the load data at each of the filtered multiple time points. The horizontal axis of the load data curve can be time, and the vertical axis can be the load value. The load range span can be preset based on the power range of each burner in at least two sets of burners in the gas-fired water heater. Then, the load data curve is segmented using two straight lines parallel to the horizontal axis and spaced apart by the load range span, resulting in multiple curve segments located between the two lines, and the duration corresponding to each curve segment is determined. By moving the two curves along the vertical axis to perform multiple segments, the commonly used load range is determined based on the durations obtained from the multiple segments.

[0144] In one embodiment, the total duration corresponding to the multiple curve segments obtained each time can be determined, resulting in multiple total durations. The load range corresponding to the longest total duration can be determined as the commonly used load range.

[0145] In another embodiment, the maximum value among the multiple durations corresponding to the multiple curve segments obtained each time can be used as the duration corresponding to that time segment, and multiple durations corresponding to multiple segments can be obtained. The load range corresponding to the maximum duration is determined as the common load range.

[0146] Step S402, if yes, control the burner or burner combination corresponding to the commonly used segment to perform combustion; the power range corresponding to the commonly used segment includes the commonly used load range.

[0147] The commonly used sections can correspond to one or more of the at least two sets of burners in the combustion device. After obtaining the commonly used load range, the commonly used sections corresponding to the commonly used load range can also be obtained.

[0148] If the required load is determined to be within the pre-acquired normal load range, the controller can control the burner or burner combination corresponding to the normal load segment to perform combustion. The power range corresponding to the normal load segment includes the normal load range; that is, the normal load range is within the power range corresponding to the normal load segment.

[0149] Each time a user starts using water, the control method of the gas-fired water heater in this application can control the burner or burner combination corresponding to the commonly used segment to burn when the current required load is within the pre-acquired commonly used load range. Since the power range corresponding to the commonly used segment includes the commonly used load range, the required load when the user's water demand or water environment changes may still be within the commonly used load range. In this way, the demand can be met simply by adjusting the firepower through the gas proportional valve, without the need for segment switching operations. Therefore, temperature fluctuations can be reduced or avoided, the constant temperature effect of the water heater can be improved, and the user experience can be enhanced.

[0150] In the initial stage of installation and use of a gas-fired water heater, since the user's water usage habits have not yet been learned, it is impossible to obtain the user's common load range and corresponding common segments. Therefore, in some embodiments of this specification, the control method of the gas-fired water heater may further include: controlling the combustion device to burn according to a preset segmentation method when the common load range corresponding to the gas-fired water heater is not obtained.

[0151] During the initial installation and use, the gas-fired water heater can store preset segmentation modes. These preset segmentation modes can include multiple segments, each corresponding to at least one set of burners and a power range. If the commonly used load range is not available, the controller can control the combustion device to burn according to the preset segmentation mode. In one embodiment, the controller can determine the first segment corresponding to the current required load from the multiple segments of the preset segmentation mode, and control the burner or burner combination corresponding to the first segment to burn. The power range corresponding to the first segment can include the current required load. If the subsequent heat load demand changes, it is determined whether the first segment can meet the demand. If so, the heat output is controlled by adjusting the opening of the proportional valve of the gas-fired water heater, without needing to switch segments. Otherwise, the preset segmentation mode is used for segmentation.

[0152] In the initial stage of installation and use of a gas water heater, in order to determine the user's usual load range, the user's water consumption data within a preset period can be recorded. Therefore, in some embodiments of this specification, the control method of the gas water heater may further include: recording the user's water consumption data of the gas water heater within a preset period when the usual load range corresponding to the gas water heater is not obtained; and determining the usual load range based on the user's water consumption data within the preset period.

[0153] In this embodiment, the preset period can be set according to actual needs. For example, the preset period can be one day, one week, one month, or one quarter. In this embodiment, the user water usage data within the preset period can include the inlet water temperature, set temperature, and inlet water flow rate at multiple times within the preset period. Based on the inlet water temperature, set temperature, and inlet water flow rate at multiple times within the preset period, the load values ​​at multiple times within the preset period can be calculated to obtain the load data within the preset period. Then, the commonly used load range can be determined based on the load data within the preset period.

[0154] In another embodiment, considering that the set temperature generally remains constant or fluctuates only slightly within a preset period, the user water usage data within the preset period can include the set temperature at a certain moment within the preset period, as well as the inlet water temperature and flow rate at multiple moments within the preset period. Based on the set temperature at a certain moment and the inlet water temperature and flow rate at multiple moments within the preset period, the load values ​​at multiple moments within the preset period can be calculated to obtain the load data for the preset period. Then, the commonly used load range can be determined based on the load data within the preset period.

[0155] In another embodiment, considering that the set temperature generally remains constant or fluctuates only slightly within a preset period, and the inlet water temperature changes only slightly within the preset period, the user water usage data within the preset period can include the set temperature and inlet water temperature at a certain moment within the preset period, as well as the inlet water flow rate at multiple moments within the preset period. In one embodiment, the load values ​​at multiple moments within the preset period can be calculated based on the set temperature and inlet water temperature at a certain moment and the inlet water flow rate at multiple moments within the preset period to obtain the load data within the preset period. Then, the commonly used load range can be determined based on the load data within the preset period. In another embodiment, the commonly used inlet water flow rate can be determined based on the inlet water flow rate at multiple moments within the preset period. Then, the commonly used load range can be determined based on the commonly used inlet water flow rate and the set temperature and inlet water temperature at a certain moment.

[0156] By recording user water usage data for gas water heaters within a preset period, user water usage habits can be learned. Based on these habits, the common load range of the gas water heater can be determined. Then, by controlling the combustion of the gas water heater within the common load range, temperature fluctuations can be reduced or avoided, improving the constant temperature effect of the water heater and thus enhancing the user experience.

[0157] To improve the accuracy of the commonly used load range, obviously abnormal user water usage data can be filtered out when determining the commonly used load range based on user water usage data. Therefore, in some embodiments of this specification, determining the commonly used load range based on load data within the preset period may include: filtering load data that meets a third preset condition from the load data within the preset period; and determining the commonly used load range based on the filtered load data.

[0158] In this embodiment, the third preset condition includes at least one of the following: water usage duration is greater than a preset time period; the load value is within a preset load range; the influent flow rate is within a preset influent flow rate range; and the temperature difference change is less than a preset temperature difference. The temperature difference is the difference between the set temperature and the influent temperature. By filtering load data with a water usage duration greater than the preset time period, load data with excessively short water usage durations can be filtered out. By filtering load data with a load value within the preset load range, load data with abnormally high or low load values ​​can be filtered out. By filtering load data with a temperature difference change less than the preset temperature difference, load data with excessively large or small temperature differences can be filtered out. By filtering load data with an influent flow rate within the preset influent flow rate range, load data with excessively large or small influent flow rates can be filtered out. After filtering, a commonly used load range can be determined based on the filtered load data. The accuracy of the commonly used load range can be improved through the above methods.

[0159] Considering that load variations can be significant across different time periods due to differences in temperature or water consumption, the commonly used load range may differ across time periods. For example, this could occur during the day and night, on weekdays and holidays, or in different seasons. Therefore, in some embodiments of this specification, determining the commonly used load range based on load data within the preset period may include: dividing the preset period into multiple time periods; and determining the commonly used load range corresponding to each time period based on load data within each of the multiple time periods.

[0160] After acquiring user water consumption data within a preset period, the data can be divided according to different time periods. In one embodiment, the user water consumption data within the preset period can be divided into first user water consumption data and second user water consumption data. The first user water consumption data refers to the user water consumption data within a first time period within the preset period. The second user water consumption data refers to the user water consumption data within a second time period within the preset period. For example, the first time period can be from 8:00 AM to 8:00 PM, and the second time period can be from 8:00 PM to 8:00 AM. Alternatively, the first time period can be a weekday, and the second time period can be a holiday.

[0161] In another embodiment, user water usage data within a preset period can be divided into first user water usage data, second user water usage data, and third user water usage data. First user water usage data refers to user water usage data within a first time period within the preset period. Second user water usage data refers to user water usage data within a second time period within the preset period. Third user water usage data refers to user water usage data within a third time period within the preset period. For example, the first time period could be from 8:00 AM to 6:00 PM, the second time period could be from 6:00 PM to 10:00 PM, and the third time period could be from 10:00 PM to 8:00 AM. Another example is that the first time period could be spring / autumn, the second time period could be summer, and the third time period could be winter. It is understood that the above time period division method is merely exemplary, and an appropriate method can be adopted based on the actual water usage environment or user water usage habits.

[0162] After dividing the user water consumption data within a preset period into user water consumption data corresponding to each time period, the method for calculating the common load range in the above embodiment can be used to calculate the common load range corresponding to each time period, resulting in multiple common load ranges. This method allows for the calculation of common load ranges for different time periods, making the common load ranges more targeted.

[0163] Furthermore, since the commonly used load range may include the commonly used load range corresponding to each time period in multiple time periods, obtaining the commonly used load range corresponding to the gas water heater may include: determining the target time period corresponding to the current moment; and obtaining the commonly used load range of the gas water heater in the target time period.

[0164] Specifically, the target time period corresponding to the current moment can be determined, and then the common load range of the gas water heater during the target time period can be obtained. The common load range obtained in this way has greater applicability, thereby improving the constant temperature effect of the water heater.

[0165] After determining the common load range, the corresponding common segments can be determined. The power range corresponding to each common segment can include the common load range. The common load range and common segments can be associated and stored in local storage or a cloud server. Therefore, in some embodiments of this specification, the control method of the gas-fired water heater may further include: when the common load range is determined, obtaining the power range corresponding to each segment in the multiple segments of the preset segmentation method; and when the power range corresponding to each segment does not include the common load range, generating common segments based on the common load range.

[0166] Gas-fired water heaters can pre-store preset segmentation methods. These preset segmentation methods can include multiple segments. Each segment can correspond to one or more burners. The gas-fired water heater can also pre-store the power range corresponding to each segment. Given a known common load range, the power range corresponding to each segment in the preset segmentation method can be obtained. It is then determined whether the power range corresponding to each segment includes the common load range. If the power range corresponding to each segment does not include the common load range, a common segment can be generated based on the common load range. A common segment can correspond to one or more burners. Using the above method, if no segment containing the common load range exists in the preset segmentation method, at least two burners can be recombine based on the common load range to generate a new segment, thus obtaining a common segment.

[0167] Furthermore, in some embodiments of this specification, if the power range of at least one of the plurality of segments includes the commonly used load range, any one of the at least one segments can be determined as the commonly used segment. In this embodiment, if there is at least one segment in the preset segmentation method that includes the commonly used load range, any one of the at least one segments can be determined as the commonly used segment.

[0168] Optionally, if the power range of at least one of the multiple segments includes the commonly used load range, multiple segments can be designated as commonly used segments, resulting in multiple commonly used segments. This allows for the rotation of multiple commonly used segments when controlling the combustion of the burners corresponding to those segments, avoiding the problem of prolonged heating and potential failure of the heat exchanger corresponding to the burner in a single segment due to prolonged heating. This, in turn, extends the service life of the gas-fired water heater.

[0169] Optionally, in some embodiments of this specification, when the power range of at least one of the plurality of segments includes the commonly used load range, the segment with the largest upper power limit among the at least one segment is determined as the commonly used segment. The larger the upper power limit of a segment, the more burners (or combi burners) are included in the corresponding burner or burner combination. This results in a lower load on a single burner during combustion, a lower fan speed, and consequently, lower noise. By designating the segment with the largest upper power limit that includes the commonly used load range as the commonly used segment, the noise of the gas-fired water heater can be reduced, improving the user experience.

[0170] Optionally, in some embodiments of this specification, if the power range of at least one of the plurality of segments includes the commonly used load range, the segment with the largest power range span among the at least one segment is determined as the commonly used segment. The larger the power range span of the commonly used segment, the greater the probability that the required heat load will still be within the commonly used segment when the user's water demand changes subsequently. Correspondingly, the number of subsequent segment cuts can be reduced, thereby reducing temperature fluctuations, improving the constant temperature effect, and enhancing the user's constant temperature experience.

[0171] Considering that users' water usage habits and environments may change, leading to variations in the commonly used load range, the commonly used load range can be updated periodically. Therefore, in some embodiments of this specification, the control method for the gas-fired water heater may further include: recording user water usage data for the gas-fired water heater within a preset period at preset time intervals to update the commonly used load range. By periodically updating the commonly used load range, the ineffectiveness of the commonly used load range due to changes in user water usage habits or the water environment can be avoided. Furthermore, by updating the commonly used load range in real time, the problem of large temperature fluctuations caused by temperature cuts can be further reduced, improving the temperature control effect of the gas-fired water heater.

[0172] The commonly used load range mainly depends on the user's water usage habits and / or the user's water usage environment. Therefore, the commonly used load range can be updated when relevant data changes significantly. Thus, in some embodiments of this specification, the control method for the gas-fired water heater may further include: recording user water usage data for a preset period starting from the current moment, under the condition that a second preset condition is met, to update the commonly used load range.

[0173] In this embodiment, the second preset condition may include at least one of the following: the temperature difference change exceeds the first preset temperature difference range; the temperature difference is the difference between the set temperature and the inlet water temperature; the water consumption change exceeds the preset water consumption range. A large temperature difference change may be due to a significant change in the user-set temperature or a significant change in the inlet water temperature caused by changes in ambient temperature. A significant change in water consumption may refer to a significant change in the user's total water consumption within a specified time period. It is understood that the second preset condition may also include other conditions, such as a change in inlet water flow exceeding a preset flow rate, or a change in water pressure exceeding a preset pressure. In this embodiment, by re-recording user water consumption data within a preset period to update the commonly used load range when there are significant changes in user water usage habits or the water environment, the commonly used load range can be prevented from becoming invalid due to changes in user water usage habits or the user water environment, thus improving the applicability of the commonly used load range and thereby enhancing the constant temperature effect of the gas-fired water heater.

[0174] In some embodiments of this specification, when it is determined that the current required load is not within the range of commonly used loads obtained in advance, the control method of the gas-fired water heater may further include: controlling the combustion device to burn in a preset segmented manner.

[0175] In this embodiment, the preset segmentation method may include multiple segments, each segment corresponding to at least one set of burners. When the commonly used load range is not obtained, the controller can control the combustion device to burn according to the preset segmentation method. In one embodiment, the controller can determine the first segment corresponding to the current required load based on the current required load, and control the burner or burner combination corresponding to the first segment to burn. The power range corresponding to the first segment may include the current required load. If the subsequent heat load demand changes, it is determined whether the first segment can meet the demand. If it can, the firepower is controlled by adjusting the opening of the proportional valve of the gas water heater, without needing to switch segments; otherwise, the segmentation is performed according to the preset segmentation method. In this embodiment, when the current required load is not within the commonly used load range, combustion is controlled in a conventional manner.

[0176] When a gas-fired water heater operates in a preset segmented combustion mode, if the heat demand changes, it can be reassessed to determine whether the current required load is within the normal load range. If so, the combustion device is controlled to switch to the burner or burner combination corresponding to the normal load segment. Therefore, in some embodiments of this specification, the control method for the gas-fired water heater further includes: when controlling the combustion device to operate in a preset segmented combustion mode, if a fourth preset condition is met, determining whether the current required load is within the normal load range; if the current required load is determined to be within the normal load range, controlling the combustion device to switch to the burner or burner combination corresponding to the normal load segment.

[0177] In this embodiment, the fourth preset condition includes at least one of the following: the change in inlet water flow rate or the change in outlet water flow rate exceeds the first preset flow rate range; the change in temperature difference exceeds the second preset temperature difference range; the temperature difference is the difference between the set temperature and the inlet water temperature. When the inlet water flow rate, the outlet water flow rate, or the temperature difference changes significantly, the current required load can be re-determined, and it can be re-evaluated whether the current required load is within the commonly used load range. If so, combustion can be switched to the commonly used segment, which can avoid frequent subsequent segment switching and improve the constant temperature effect.

[0178] To meet users' water demand, when controlling the burners or burner combinations corresponding to the commonly used segments for combustion, it is possible to monitor whether the heat demand has changed significantly. If so, it is necessary to re-determine whether the current required load is within the commonly used load range or the power range corresponding to the commonly used segment. Therefore, in some embodiments of this specification, the control method of the gas-fired water heater may further include: when controlling the burners or burner combinations corresponding to the commonly used segments for combustion, under the condition of satisfying a fifth preset condition, determining whether the current required load is within the commonly used load range or the power range corresponding to the commonly used segment; if it is determined that the current required load is within the commonly used load range or the power range corresponding to the commonly used segment, controlling the opening degree of the gas proportional valve of the gas-fired water heater based on the current required load. If the current required load after a change in heat demand is still within the commonly used load range or the power range corresponding to the commonly used segment, the heat output can be adjusted by adjusting the opening degree of the gas proportional valve to meet user needs, avoiding temperature fluctuations caused by segment switching.

[0179] In this embodiment, the fifth preset condition includes at least one of the following: the change in inlet water flow rate or the change in outlet water flow rate exceeds the second preset flow rate range; the change in temperature difference exceeds the third preset temperature difference range; the temperature difference is the difference between the set temperature and the inlet water temperature. It is understood that other fifth preset conditions can be set as needed.

[0180] Furthermore, in some embodiments of this specification, the control method of the gas-fired water heater may further include: when it is determined that the current required load is not within the range of the commonly used load or the power range corresponding to the commonly used segment, controlling the combustion device to switch to combustion according to a preset segmentation method. When the current required load after a change in heat demand exceeds the range of the commonly used load or the power range corresponding to the commonly used segment, the combustion device can be controlled to switch to a suitable segment in the preset segmentation method for combustion. In this embodiment, based on the re-determined current required load after the change in heat demand, a corresponding second segment can be selected from the preset segmentation method, and the combustion device can be switched from the commonly used segment to the second segment for combustion. The power range corresponding to the second segment may include the re-determined current required load. In this embodiment, when the current required load after a change in heat demand exceeds the power range of the commonly used segment, a segmentation operation can be performed to meet user needs.

[0181] In some embodiments of this specification, the gas-fired water heating device may further include at least two gas supply channels that can be independently opened and closed. The at least two gas supply channels are configured in a one-to-one correspondence with the at least two sets of burners. The at least two sets of burners include a first set of burners and a second set of burners. Correspondingly, the at least two gas supply channels include a first gas supply channel and a second gas supply channel. The first gas supply channel corresponds to the first set of burners and is used to supply gas to the first set of burners. The second gas supply channel corresponds to the second set of burners and is used to supply gas to the second set of burners.

[0182] Accordingly, if the current required load is within the range of the pre-obtained common load, and the burner or burner combination corresponding to the common segment includes the first group of burners and the second group of burners, the controller can control the first group of burners and the second group of burners to burn simultaneously.

[0183] Furthermore, in some embodiments of this specification, the at least two sets of burners may further include a third set of burners located between the first set of burners and the second set of burners. The third set of burners can be ignited by either the first set of burners or the second set of burners in a combustion state. Correspondingly, the at least two gas supply channels also include a third gas supply channel. The third gas supply channel corresponds to the third set of burners and is used to supply gas to the third set of burners.

[0184] Accordingly, in some embodiments of this specification, when the current required load is within a pre-obtained common load range, if the burner or burner combination corresponding to the common segment includes the third group of burners, the controller can control the first group of burners or the second group of burners to start combustion. After controlling the first group of burners or the second group of burners in the combustion state to ignite the third group of burners, the controller can control the first group of burners and / or the second group of burners to remain in combustion or be turned off. Specifically, after igniting the third group of burners, the controller can control the first group of burners and / or the second group of burners to remain in combustion or be turned off based on whether the common segment includes the first group of burners and / or the second group of burners.

[0185] Furthermore, in some embodiments of this specification, the at least two sets of burners may further include a third set of burners and a fourth set of burners located between the first set of burners and the second set of burners. The third set of burners may be adjacent to the first set of burners, and the fourth set of burners may be adjacent to the second set of burners. The third set of burners and the fourth set of burners can be ignited by the first set of burners and the second set of burners, respectively, while both are in a combustion state. The first set of burners may also be ignited by the third set of burners, while the second set of burners may also be ignited by the fourth set of burners, while both are in a combustion state. Correspondingly, the at least two gas supply channels may further include a third gas supply channel and a fourth gas supply channel. The third gas supply channel corresponds to the third set of burners and is used to supply gas to the third set of burners. The fourth gas supply channel corresponds to the fourth set of burners and is used to supply gas to the fourth set of burners.

[0186] Accordingly, in some embodiments of this specification, when the current required load is within a pre-obtained common load range, if the burner or burner combination corresponding to the common segment includes the third group of burners and the fourth group of burners, the first group of burners and the second group of burners can be controlled to start combustion. After the first group of burners and the second group of burners, which are in the combustion state, respectively ignite the third group of burners and the fourth group of burners, the first group of burners and / or the second group of burners can be controlled to remain in combustion or be turned off. Specifically, after igniting the third group of burners and the fourth group of burners, the first group of burners and / or the second group of burners can be controlled to remain in combustion or be turned off depending on whether the common segment includes the first group of burners and / or the second group of burners.

[0187] Furthermore, in some embodiments of this specification, the at least two sets of burners may further include a fifth set of burners located between the third set of burners and the fourth set of burners. The fifth set of burners can be ignited by either the third set of burners or the fourth set of burners that are in a combustion state. The third set of burners and the fourth set of burners can be ignited by the fifth set of burners that are in a combustion state. Correspondingly, the at least two gas supply channels also include a fifth gas supply channel. The fifth gas supply channel corresponds to the fifth set of burners and is used to supply gas to the fifth set of burners.

[0188] Accordingly, in some embodiments of this specification, when the current required load is within the pre-obtained common load range, if the burner or burner combination corresponding to the common segment includes the fifth group of burners, the first group of burners or the second group of burners can be controlled to start combustion. The first group of burners or the second group of burners in combustion state can then ignite the third group of burners or the fourth group of burners. After the third group of burners or the fourth group of burners in combustion state ignites the fifth group of burners, the first group of burners, the second group of burners, the third group of burners, and / or the fourth group of burners can be controlled to remain in combustion or be turned off. Specifically, after igniting the fifth group of burners, the first group of burners, the second group of burners, the third group of burners, and / or the fourth group of burners can be controlled to remain in combustion or be turned off depending on whether the common segment includes the first group of burners, the second group of burners, the third group of burners, and / or the fourth group of burners.

[0189] In some embodiments of this specification, the power range of the first group of burners and the second group of burners may be the same; the power range of the third group of burners and the fourth group of burners may be the same.

[0190] Please refer to Figure 5 A flowchart illustrating the control method of the gas-fired water heater in this embodiment is shown. Figure 5 As shown, the control method of the gas-fired water heater in this embodiment may include the following steps.

[0191] Step 1: Receive the user's water usage signal.

[0192] Step 2: Obtain the common load range; if the common load range is obtained, proceed to step 9; if the common load range is not obtained, proceed to step 3.

[0193] Step 3: Control combustion according to the preset segmentation method and continue combustion.

[0194] Step 4: Record user water usage data within the preset period.

[0195] Step 5: Determine and store the user's commonly used load range based on the user water usage data within the preset period;

[0196] Step 6: Determine whether the power range corresponding to each segment in the preset segmentation method includes the common load range; if yes, proceed to step 7; otherwise, proceed to step 8.

[0197] Step 7: Identify the frequently used segments from the multiple segments and associate the frequently used segments with the frequently used load ranges for storage.

[0198] Step 8: Select one or more sets of burners from at least two sets of burners according to the common load range to obtain the common segment. The power range corresponding to the common segment includes the common load range.

[0199] Step 9: Determine if the current required load is within the normal load range; if yes, proceed to step 10; otherwise, proceed to step 3.

[0200] Step 10: Control the burners or burner combinations corresponding to the commonly used segments to perform combustion.

[0201] Step 11: Determine in real time whether the current required load is within the normal load range. If yes, proceed to step 12; otherwise, proceed to step 13.

[0202] Step 12: Adjust the flame intensity by adjusting the opening of the gas proportional valve to continue combustion.

[0203] Step 13: Perform the segmentation operation.

[0204] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. For details, please refer to the foregoing descriptions of the relevant processing embodiments; they will not be repeated here.

[0205] The foregoing has described specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired result. In some embodiments, multitasking and parallel processing are possible or may be advantageous.

[0206] This specification also provides a control method for a gas-fired water heater, which includes a combustion device comprising at least two sets of burners. Please refer to... Figure 6 The diagram shows a flowchart of a control method for a gas-fired hot water device according to an embodiment of this specification. Figure 6 As shown, the control method for the gas-fired water heater in this embodiment may include the following steps:

[0207] Step S601: Obtain user water usage data of the gas-fired water heater within a preset period.

[0208] Step S602: Based on the user water usage data within the preset period, determine the target segmentation mode corresponding to the gas water heater, and perform combustion control based on the target segmentation mode; the target segmentation mode includes a commonly used segment; the power range corresponding to the commonly used segment includes the commonly used load range.

[0209] The method in this embodiment can be applied to the controller of a gas-fired water heater. The controller can acquire user water usage data for the gas-fired water heater within a preset period. Based on the user water usage data within the preset period, at least one commonly used load range for the user can be obtained. Based on at least one commonly used load range, a target segmentation method corresponding to the gas-fired water heater can be determined. The target segmentation method may include commonly used segments, and the power range corresponding to the commonly used segments may include the commonly used load range. The target segmentation method may also include other segments.

[0210] Please refer to Figure 2 To distinguish different gas delivery channels, A, B, C, D, and E can be used. Different combinations of gas delivery channels correspond to different burners or burner combinations, and thus different segments. For example, AB can be used to represent the segment when both gas delivery channels A and B are open. In one example, the target segmentation could be: A→B→AB→AE→ABE→ABECD. Here, ABE can correspond to a commonly used segment.

[0211] In some embodiments of this specification, determining the target segmentation method corresponding to the gas-fired water heater based on user water usage data within the preset period includes: obtaining the power range corresponding to each of the at least two groups of burners; determining the commonly used load range based on the user water usage data within the preset period; and generating the target segmentation method corresponding to the gas-fired water heater according to the power range corresponding to each group of burners and the commonly used load range. Alternatively, one or more groups of burners from the at least two burner combinations can be combined according to the power range corresponding to each group of burners and the commonly used load range to obtain multiple corresponding segments, forming the target segmentation method.

[0212] In some embodiments of this specification, determining the target segmentation method corresponding to the gas water heater based on user water usage data within the preset period may include: acquiring at least one preset segmentation method; determining a common load range based on user water usage data within the preset period; and determining the target segmentation method from at least one preset segmentation method based on the common load range.

[0213] Gas-fired water heating systems can pre-store at least one preset segmentation mode. After determining the commonly used load range, a target segmentation mode can be determined from the at least one preset segmentation mode based on the commonly used load range. The target segmentation mode includes commonly used segments, and the power range corresponding to the commonly used segments can include the commonly used load range.

[0214] For example, at least one preset segmentation method may include: A→B→AB→AE→ABE→ABECD; A→AD→ABD→BE→ABECD; A→B→BC→AE→ABE→ABECD; A→AD→ABC→ABE→ABECD. If the power range corresponding to segment BE can include the commonly used load range, then A→AD→ABD→BE→ABECD can be selected as the target segmentation method.

[0215] Understandably, if the power range corresponding to each segment in at least one preset segmentation method does not include the common load range, a target segmentation method corresponding to the gas water heater can be generated based on the power range corresponding to each group of burners and the common load range. For example, a common segment can be generated based on the common load range, and then a target segmentation method can be generated based on the common segment and the preset segmentation method.

[0216] In some embodiments of this specification, combustion control based on the target segmentation method may include: if a first preset condition is met, determining whether the current required load is within the range of the commonly used load; if so, controlling the burner or burner combination corresponding to the commonly used segment to perform combustion.

[0217] Please refer to Figure 7 This diagram illustrates the change in outlet water temperature over time during combustion in the prior art, which is controlled according to a preset segmentation method. Figure 7 In this case, the gas-fired water heater is set to 43℃. Due to multiple water usage points, the inlet water flow rate varies between 5.5L / min and 8L / min. This variation triggers a water cutoff, causing temperature fluctuations. Figure 7 As shown, in the prior art, when combustion is controlled according to a preset segmentation method, the maximum temperature drop caused by segmentation can reach 5°C when the heat demand changes.

[0218] Please refer to Figure 8 This diagram illustrates the change of outlet water temperature over time during combustion according to the target segmentation method in the embodiments of this specification. Figure 8 In this case, the gas-fired water heater is set to 43℃. Due to multiple water usage points, the inlet water flow rate varies between 5.5L / min and 8L / min. No switching is required during these changes, resulting in minimal temperature fluctuations. Figure 8As shown in the embodiments of this specification, when combustion is controlled according to the target segmentation method determined by the user's water usage habits, when the heat demand changes, since it is within the normal load range, there is no need to segment it. It is only necessary to adjust the firepower through the proportional valve. When the heat demand changes (such as multiple water usage points or sudden changes in water pressure), since there is no need to segment it, the maximum temperature drop is only 2.2℃.

[0219] Depend on Figure 7 and Figure 8 As can be seen, the control method in the embodiments of this specification can significantly reduce temperature fluctuations, improve the constant temperature effect of the gas water heater, and enhance the user's constant temperature experience.

[0220] This specification also provides a control device for a gas-fired water heater, as described in the following embodiments. Since the principle of the control device for a gas-fired water heater is similar to that of the control method for a gas-fired water heater, the implementation of the control device can be referenced from the implementation of the control method for a gas-fired water heater; repeated details will not be elaborated further. As used below, the terms "unit" or "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated. Figure 9 This is a structural block diagram of a control device for a gas-fired water heater according to an embodiment of this specification, such as... Figure 9 As shown, it includes: a determination module 901 and a control module 902. The structure is described below.

[0221] The determination module 901 is used to determine whether the current required load is within the range of commonly used loads obtained in advance, provided that the first preset condition is met.

[0222] The control module 902 is used to control the burner or burner combination corresponding to the common load segment to perform combustion when the current required load is within the pre-acquired common load range; the power range corresponding to the common load segment includes the common load range.

[0223] This specification also provides a gas-fired water heating device, which includes a combustion device and a controller. The combustion device includes at least two sets of burners. The controller is used to: determine whether the currently required load is within a pre-acquired common load range when a first preset condition is met; if so, control the burners or burner combinations corresponding to the common load segments to perform combustion; the power range corresponding to the common load segments includes the common load range.

[0224] In some embodiments of this specification, the gas-fired water heater further includes: at least two gas supply channels that can be independently opened and closed; the at least two gas supply channels are configured one-to-one with the at least two sets of burners; the at least two sets of burners include a first set of burners and a second set of burners; when the current required load is within the range of a pre-obtained common load, if the burner or burner combination corresponding to the common segment includes the first set of burners and the second set of burners, the controller controls the first set of burners and the second set of burners to burn simultaneously.

[0225] In some embodiments of this specification, when the current required load is within the range of a pre-obtained common load, if the burner or burner combination corresponding to the common segment includes the third group of burners, the controller controls the first group of burners or the second group of burners to start combustion. After controlling the first group of burners or the second group of burners in the combustion state to ignite the third group of burners, the controller controls the first group of burners and / or the second group of burners to remain in combustion or to be turned off.

[0226] In some embodiments of this specification, the at least two sets of burners further include a third set of burners and a fourth set of burners located between the first set of burners and the second set of burners; the third set of burners and the fourth set of burners can be ignited by the first set of burners and the second set of burners, which are in a state of combustion, respectively.

[0227] In some embodiments of this specification, when the current required load is within the range of a pre-obtained common load, if the burner or burner combination corresponding to the common segment includes the third group of burners and the fourth group of burners, the controller controls the first group of burners and the second group of burners to start combustion. After controlling the first group of burners and the second group of burners in the combustion state to ignite the third group of burners and the fourth group of burners respectively, the controller controls the first group of burners and / or the second group of burners to remain in combustion or to be turned off.

[0228] In some embodiments of this specification, the at least two sets of burners further include a fifth set of burners located between the third set of burners and the fourth set of burners; the fifth set of burners can be ignited by the third set of burners or the fourth set of burners in a burning state; the third set of burners and the fourth set of burners can be ignited by the fifth set of burners in a burning state.

[0229] In some embodiments of this specification, when the current required load is within the range of a pre-obtained common load, if the burner or burner combination corresponding to the common segment includes the fifth group of burners, the controller controls the first group of burners or the second group of burners to start combustion, controls the first group of burners or the second group of burners in combustion to ignite the third group of burners or the fourth group of burners, and after controlling the third group of burners or the fourth group of burners in combustion to ignite the fifth group of burners, the controller controls the first group of burners, the second group of burners, the third group of burners and / or the fourth group of burners to remain in combustion or be turned off.

[0230] In some embodiments of this specification, the first group of burners has the same power range as the second group of burners; the third group of burners has the same power range as the fourth group of burners.

[0231] In some embodiments of this specification, the gas-fired water heater further includes: a first ignition device disposed near a first set of burners; and a second ignition device disposed near a second set of burners.

[0232] In some embodiments of this specification, the gas-fired water heater further includes a gas proportional valve; when the controller controls the burner or burner combination corresponding to the commonly used section to perform combustion, if the fifth preset condition is met, the controller determines whether the currently required load is within the commonly used load range; if the controller determines that the currently required load is within the commonly used load range, the controller controls the opening degree of the gas proportional valve of the gas-fired water heater based on the current requirement.

[0233] In some embodiments of this specification, the gas-fired water heating device further includes a memory for storing common load ranges and / or common segments.

[0234] This specification also provides a computer storage medium for a control method based on a gas-fired water heater, wherein the computer storage medium contains computer program instructions that, when executed, implement the steps of the control method for the gas-fired water heater described in any of the above embodiments.

[0235] In this embodiment, the storage medium includes, but is not limited to, random access memory (RAM), read-only memory (ROM), cache, hard disk drive (HDD), or memory card. The memory can be used to store computer program instructions. The network communication unit can be an interface configured according to standards specified in the communication protocol for network connection communication.

[0236] In this embodiment, the specific functions and effects implemented by the program instructions stored in the computer storage medium can be explained by comparison with other embodiments, and will not be repeated here.

[0237] Obviously, those skilled in the art will understand that the modules or steps of the embodiments described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. Optionally, they can be implemented using computer-executable program code, thereby storing them in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those presented herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the embodiments of this specification are not limited to any particular combination of hardware and software.

[0238] It should be understood that the above description is for illustrative purposes and not for limitation. Many embodiments and applications beyond the provided examples will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this specification should not be determined by reference to the above description, but rather by reference to the foregoing claims and the full scope of their equivalents.

[0239] The above description is merely a preferred embodiment of this specification and is not intended to limit this specification. Various modifications and variations can be made to the embodiments described herein by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification should be included within the scope of protection of this specification.

Claims

1. A control method for a gas-fired hot water device, characterized in that, The gas-fired water heating device includes a combustion device, which includes at least two sets of burners; the control method of the gas-fired water heating device includes: Under the condition that the first preset condition is met, it is determined whether the current required load is within the range of commonly used loads obtained in advance; the range of commonly used loads is determined based on the user water consumption data of the gas water heater within a preset period; the user water consumption data within the preset period includes the inlet water temperature, set temperature and inlet water flow rate at multiple times within the preset period; If so, the burner or burner combination corresponding to the commonly used segment of the commonly used load range is controlled to burn during combustion. During combustion, if the current required load changes within the commonly used load range or within the power range corresponding to the commonly used segment, the opening of the gas proportional valve of the gas water heater is controlled based on the current required load, and the burner or burner combination corresponding to the commonly used segment is kept burning without the need for segment switching operation.

2. The control method for the gas-fired hot water device according to claim 1, characterized in that, The first preset condition includes: receiving a user's water usage signal.

3. The control method for the gas-fired hot water device according to claim 1, characterized in that, Determine whether the current required load is within the pre-acquired range of common loads, including: Obtain the common load range corresponding to the gas-fired water heater; If the commonly used load range corresponding to the gas-fired water heater is obtained, determine whether the currently required load is within the commonly used load range.

4. The control method for the gas-fired hot water device according to claim 3, characterized in that, The control method for the gas-fired hot water device also includes: If the normal load range corresponding to the gas water heater is not obtained, the combustion device is controlled to burn in a preset segmented manner.

5. The control method for the gas-fired hot water device according to claim 4, characterized in that, The control method for the gas-fired hot water device also includes: If the common load range corresponding to the gas water heater is not obtained, record the user water usage data of the gas water heater within a preset period. Based on the user water usage data within the preset period, the commonly used load range is determined.

6. The control method for a gas-fired hot water device according to claim 5, characterized in that, The control method for the gas-fired hot water device also includes: Given a common load range, obtain the power range corresponding to each segment in the multiple segments of the preset segmentation method; If the power range corresponding to each segment does not include the commonly used load range, a commonly used segment is generated based on the commonly used load range.

7. The control method for a gas-fired hot water device according to claim 6, characterized in that, The control method for the gas-fired hot water device also includes: If the power range of at least one of the plurality of segments includes the commonly used load range, then any one of the at least one segments shall be identified as the commonly used segment.

8. The control method for a gas-fired hot water device according to claim 6, characterized in that, The control method for the gas-fired hot water device also includes: If the power range of at least one of the multiple segments includes the commonly used load range, the segment with the largest upper power limit among the at least one segment shall be determined as the commonly used segment.

9. The control method for a gas-fired hot water device according to claim 6, characterized in that, The control method for the gas-fired hot water device also includes: If the power range of at least one of the multiple segments includes the commonly used load range, the segment with the largest power range span among the at least one segment shall be determined as the commonly used segment.

10. The control method for a gas-fired hot water device according to claim 5, characterized in that, The control method for the gas-fired hot water device also includes: The user water usage data of the gas-fired water heater within a preset period is recorded once every preset time interval to update the commonly used load range.

11. The control method for a gas-fired hot water device according to claim 5, characterized in that, The control method for the gas-fired hot water device also includes: Under the condition that the second preset condition is met, the user water usage data of the gas water heater within a preset period starting from the current moment is recorded in order to update the commonly used load range.

12. The control method for a gas-fired hot water device according to claim 11, characterized in that, The second preset condition includes at least one of the following: The temperature difference exceeds the first preset temperature difference range; the temperature difference is the difference between the set temperature and the inlet water temperature; Water consumption changes beyond the preset range.

13. The control method for a gas-fired hot water device according to claim 12, characterized in that, Based on user water usage data within the preset period, determine and store the commonly used load range, including: Based on the inlet water temperature, set temperature and inlet water flow rate at multiple times within the preset period, the load value at multiple times within the preset period is calculated to obtain the load data within the preset period. Based on the load data within the preset period, the commonly used load range is determined.

14. The control method for a gas-fired hot water device according to claim 13, characterized in that, Based on the load data within the preset period, the commonly used load range is determined, including: Load data that meets the third preset condition is selected from the load data within the preset period; Based on the selected load data, the commonly used load range is determined.

15. The control method for a gas-fired hot water device according to claim 14, characterized in that, The third preset condition includes at least one of the following: The load value is within the preset load range; The water inflow rate is within the preset range; The temperature difference is less than the preset temperature difference; the temperature difference is the difference between the set temperature and the inlet water temperature.

16. The control method for a gas-fired hot water device according to claim 13, characterized in that, Based on the load data within the preset period, the commonly used load range is determined, including: The preset period is divided into multiple time periods; Based on the load data within each of the multiple time periods, the commonly used load range corresponding to each time period is determined.

17. The control method for a gas-fired hot water device according to claim 3, characterized in that, The commonly used load range includes the commonly used load range corresponding to each time period in multiple time periods; Accordingly, obtaining the common load range corresponding to the gas-fired water heater includes: Determine the target time period corresponding to the current moment; Obtain the typical load range of the gas-fired water heater during the target time period.

18. The control method for a gas-fired hot water device according to claim 1, characterized in that, The control method for the gas-fired hot water device also includes: If it is determined that the current required load is not within the range of the commonly used load obtained in advance, the combustion device is controlled to burn in a preset segmented manner.

19. The control method for a gas-fired hot water device according to claim 18, characterized in that, The control method for the gas-fired water heater further includes: when controlling the combustion device to burn in a preset segmented manner... If the fourth preset condition is met, determine whether the current required load is within the range of the commonly used load. When the required load is determined to be within the range of the commonly used load, the combustion device is controlled to switch to the burner or burner combination corresponding to the commonly used section for combustion.

20. The control method for a gas-fired hot water device according to claim 19, characterized in that, The fourth preset condition includes at least one of the following: The change in influent flow rate or the change in effluent flow rate exceeds the first preset flow range; The temperature difference exceeds the second preset temperature difference range; the temperature difference is the difference between the set temperature and the inlet water temperature.

21. The control method for a gas-fired hot water device according to claim 1, characterized in that, The control method for the gas-fired hot water device also includes: When controlling the burner or burner combination corresponding to the commonly used segment to perform combustion, if the fifth preset condition is met, it is determined whether the current required load is within the range of the commonly used load. If it is determined that the current required load is within the normal load range, the opening degree of the gas proportional valve of the gas water heater is controlled based on the current required load.

22. The control method for a gas-fired hot water device according to claim 21, characterized in that, The control method for the gas-fired hot water device also includes: If it is determined that the current required load is not within the range of the commonly used load, the combustion device is controlled to switch to combustion according to a preset segmented mode.

23. The control method for a gas-fired hot water device according to claim 21, characterized in that, The fifth preset condition includes at least one of the following: The change in influent flow rate or the change in effluent flow rate exceeds the second preset flow rate range; The temperature difference exceeds the third preset temperature difference range; the temperature difference is the difference between the set temperature and the inlet water temperature.

24. The control method for a gas-fired hot water device according to claim 1, characterized in that, The gas-fired water heater further includes: at least two gas supply channels that can be opened and closed independently; the at least two gas supply channels are configured in a one-to-one correspondence with the at least two sets of burners; The at least two sets of burners include a first set of burners and a second set of burners; If the required load is within the range of the pre-obtained common load, and the burner or burner combination corresponding to the common segment includes the first group of burners and the second group of burners, then the first group of burners and the second group of burners are controlled to burn simultaneously.

25. The control method for a gas-fired hot water device according to claim 24, characterized in that, The at least two sets of burners also include a third set of burners located between the first set of burners and the second set of burners; The third group of burners can be ignited by the first group of burners or the second group of burners that are in a state of combustion.

26. The control method for a gas-fired hot water device according to claim 25, characterized in that, If the current required load is within the range of the pre-obtained common load, and the burner or burner combination corresponding to the common segment includes the third group of burners, then the first group of burners or the second group of burners is controlled to start combustion. After the first group of burners or the second group of burners in the combustion state ignites the third group of burners, the first group of burners and / or the second group of burners are controlled to remain in combustion or be turned off.

27. The control method for a gas-fired hot water device according to claim 24, characterized in that, The at least two sets of burners also include a third set of burners and a fourth set of burners located between the first set of burners and the second set of burners; The third group of burners and the fourth group of burners can be ignited by the first group of burners and the second group of burners, which are in a state of combustion, respectively.

28. The control method for a gas-fired hot water device according to claim 27, characterized in that, If the current required load is within the pre-obtained common load range, and the burner or burner combination corresponding to the common segment includes the third group of burners and the fourth group of burners, then the first group of burners and the second group of burners are controlled to start combustion. After the first group of burners and the second group of burners in the combustion state ignite the third group of burners and the fourth group of burners respectively, the first group of burners and / or the second group of burners are controlled to remain in combustion or be turned off.

29. The control method for a gas-fired hot water device according to claim 27, characterized in that, The at least two sets of burners also include a fifth set of burners located between the third set of burners and the fourth set of burners; The fifth group of burners can be ignited by the third group of burners or the fourth group of burners that are in a state of combustion; the third group of burners and the fourth group of burners can be ignited by the fifth group of burners that are in a state of combustion.

30. The control method for a gas-fired hot water device according to claim 29, characterized in that, If the current required load is within the pre-obtained common load range, and the burner or burner combination corresponding to the common segment includes the fifth group of burners, then the first group of burners or the second group of burners is controlled to start combustion, and the first group of burners or the second group of burners in combustion state is controlled to ignite the third group of burners or the fourth group of burners. After the third group of burners or the fourth group of burners in combustion state ignites the fifth group of burners, the first group of burners, the second group of burners, the third group of burners and / or the fourth group of burners are controlled to remain in combustion or be turned off.

31. The control method for a gas-fired hot water device according to claim 27, characterized in that, The first group of burners has the same power range as the second group of burners; the third group of burners has the same power range as the fourth group of burners.

32. A control method for a gas-fired hot water device, characterized in that, The gas-fired water heating device includes a combustion device, which includes at least two sets of burners; the control method of the gas-fired water heating device includes: Obtain user water usage data for the gas-fired water heater within a preset period; Based on the user water usage data within the preset period, a target segmentation mode corresponding to the gas water heater is determined, and combustion control is performed based on the target segmentation mode; the target segmentation mode includes a commonly used segment; the power range corresponding to the commonly used segment includes the commonly used load range; the user water usage data within the preset period includes the inlet water temperature, set temperature, and inlet water flow rate at multiple times within the preset period; Combustion control based on the target segmentation method includes: If the first preset condition is met, determine whether the current required load is within the range of the commonly used load; If so, the burner or burner combination corresponding to the commonly used segment of the commonly used load range is controlled to burn during combustion. During combustion, if the current required load changes within the commonly used load range or within the power range corresponding to the commonly used segment, the opening of the gas proportional valve of the gas water heater is controlled based on the current required load, and the burner or burner combination corresponding to the commonly used segment is kept burning without the need for segment switching operation.

33. The control method for a gas-fired hot water device according to claim 32, characterized in that, Based on user water usage data within the preset period, the target segmentation method corresponding to the gas-fired water heater is determined, including: Obtain the power range corresponding to each of the at least two groups of burners; Based on the user water consumption data within the preset period, determine the commonly used load range; Based on the power range corresponding to each group of burners and the common load range, the target segmentation method corresponding to the gas water heating device is generated.

34. The control method for a gas-fired hot water device according to claim 32, characterized in that, Based on user water usage data within the preset period, the target segmentation method corresponding to the gas-fired water heater is determined, including: Obtain at least one preset segmentation method; Based on the user water consumption data within the preset period, determine the commonly used load range; Based on the user water usage data within the preset period, a target segmentation method is determined from at least one preset segmentation method.

35. A gas-fired hot water device, characterized in that, The gas-fired water heating device includes a combustion device and a controller, and the combustion device includes at least two sets of burners; The controller is configured to: determine whether the current required load is within a pre-acquired common load range when a first preset condition is met, the common load range being determined based on user water usage data of the gas water heater within a preset period; the user water usage data within the preset period includes inlet water temperature, set temperature, and inlet water flow rate at multiple times within the preset period; if so, control the burner or burner combination corresponding to the common segment to perform combustion, and during combustion, if the current required load changes within the common load range or within the power range corresponding to the common segment, control the opening of the gas proportional valve of the gas water heater based on the current required load, and maintain the combustion of the burner or burner combination corresponding to the common segment without performing segment switching operation.

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