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

Abstract

The present specification relates to the technical field of water heating device, and specifically discloses a control method of a gas water heating device and the gas water heating device, wherein the gas water heating device comprises a combustion device, and the combustion device comprises at least two groups of burners; the control method of the gas water heating device comprises: determining a target segment and an auxiliary segment corresponding to a current required load in the case of meeting a first preset condition; a power range corresponding to the target segment contains the current required load; controlling the burners or the combination of burners corresponding to the target segment and the auxiliary segment to combust; and controlling the burners or the combination of burners corresponding to the auxiliary segment to stop combustion in the case of meeting a second preset condition. The above method can quickly heat, shorten the time for users to wait for hot water, and improve 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] When users use hot water, gas-fired instantaneous water heaters require a certain amount of time to heat cold water to the set temperature, leading to frequent complaints about long waiting times, especially in the kitchen when water usage is low. Additionally, during hot water usage, increased flow due to multiple water outlets increases the machine's heat load. The heat load switching process involves ignition, and switching to the target load takes time, meaning the hot water may not heat up quickly enough. Furthermore, if hot water usage is interrupted for a short period, the load adjustment after ignition also takes time, causing the hot water to cool down noticeably – a phenomenon known as the "cold water sandwich" – resulting in a poor hot water experience.

[0003] There is currently no effective solution to the above problems. Summary of the Invention

[0004] This specification provides a control method and a gas-fired water heater to solve the problem of poor hot water experience for users when they first start using water or when they use water at multiple points in the prior art.

[0005] 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:

[0006] Under the condition that the first preset condition is met, the target segment and auxiliary segment corresponding to the current required load are determined; the power range corresponding to the target segment includes the current required load;

[0007] The burners or burner combinations corresponding to the target segment and the auxiliary segment are controlled to perform combustion;

[0008] Under the condition that the second preset condition is met, the burner or burner combination corresponding to the auxiliary segment is controlled to stop combustion.

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

[0010] In one embodiment, the first preset condition includes at least one of the following:

[0011] The temperature difference increases beyond the preset temperature difference range; the temperature difference is the difference between the set temperature and the inlet water temperature;

[0012] The increase in water intake exceeds the preset water volume range.

[0013] In one embodiment, the second preset condition includes:

[0014] The burner or burner combination corresponding to the auxiliary segment continues to burn for a first preset time period.

[0015] In one embodiment, the second preset condition includes:

[0016] The temperature difference between the set temperature and the outlet water temperature is within the preset temperature difference range.

[0017] In one embodiment, determining the target segment and auxiliary segment corresponding to the currently required load includes:

[0018] Determine the target segments based on the current required load;

[0019] Determine the auxiliary segment corresponding to the target segment;

[0020] Based on the target segment and the auxiliary segment, the auxiliary combustion time period corresponding to the current required load is determined.

[0021] In one embodiment, determining the target segment corresponding to the currently required load includes:

[0022] Obtain the target data table; the target data table includes the correspondence between load range and target segments;

[0023] Determine the target load range corresponding to the current required load;

[0024] Based on the target load range, query the target segment corresponding to the current required load from the target data table.

[0025] In one embodiment, the target data table may further include the correspondence between target segments and auxiliary segments;

[0026] Accordingly, determine the auxiliary segments corresponding to the current required load, including:

[0027] Based on the target segment corresponding to the current required load, query the auxiliary segment corresponding to the current required load from the target data table.

[0028] In one embodiment, the target data table may further include the correspondence between the target segment, the auxiliary segment, and the auxiliary combustion time period;

[0029] Accordingly, determine the auxiliary segments corresponding to the current required load, including:

[0030] Based on the target segment corresponding to the current required load, query the auxiliary segment and auxiliary combustion time period corresponding to the current required load from the target data table.

[0031] In one embodiment, the second preset condition includes:

[0032] The auxiliary segment corresponds to a burner or burner combination that continuously burns the auxiliary combustion time period corresponding to the current required load.

[0033] 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;

[0034] The at least two sets of burners include a first set of burners and a second set of burners;

[0035] The gas-fired hot water device also includes:

[0036] A first ignition device is disposed near the first group of burners and is used to ignite the first group of burners;

[0037] The second ignition device is located near the second group of burners and is used to ignite the second group of burners.

[0038] In one embodiment, if the burner or burner combination corresponding to the target segment includes the first group of burners, the burner or burner combination corresponding to the auxiliary segment includes the second group of burners.

[0039] Accordingly, when the first preset condition is met, the first group of burners and the second group of burners are controlled to start combustion; when the second preset condition is met, the second group of burners is controlled to shut down.

[0040] In one embodiment, the at least two sets of burners further include a third set of burners disposed between the first set of burners and the second set of burners;

[0041] The third group of burners can be ignited by the first ignition device or the second ignition device; or, the third group of burners can be ignited by the first group of burners or the second group of burners that are in a burning state.

[0042] In one embodiment, if the burner or burner combination corresponding to the target segment includes the third group of burners, the burner or burner combination corresponding to the auxiliary segment includes the first group of burners or the second group of burners.

[0043] Accordingly, when the first preset condition is met, the third group of burners is controlled to start combustion with the first group of burners or the second group of burners; when the second preset condition is met, the first group of burners or the second group of burners is controlled to shut down.

[0044] In one embodiment, if the burner or burner combination corresponding to the target segment includes a first group of burners and a third group of burners, the burner or burner combination corresponding to the auxiliary segment includes a second group of burners.

[0045] Accordingly, when the first preset condition is met, the first group of burners, the second group of burners, and the third group of burners are controlled to start combustion; when the second preset condition is met, the second group of burners is controlled to shut down.

[0046] In one embodiment, if the burner or burner combination corresponding to the target segment includes the first group of burners and the second group of burners, the burner or burner combination corresponding to the auxiliary segment includes the third group of burners.

[0047] Accordingly, when the first preset condition is met, the first group of burners, the second group of burners, and the third group of burners are controlled to start combustion; when the second preset condition is met, the third group of burners is controlled to shut down.

[0048] In one embodiment, the at least two sets of burners further include a third set of burners, a fourth set of burners, and a fifth set of burners disposed between the first set of burners and the second set of burners; the third set of burners is disposed adjacent to the first set of burners; the fourth set of burners is disposed adjacent to the second set of burners; and the fifth set of burners is disposed between the third set of burners and the fourth set of burners.

[0049] The third group of burners can be ignited by the first ignition device, or can be ignited by the first group of burners that are in a burning state;

[0050] The fourth group of burners can be ignited by the second ignition device, or can be ignited by the second group of burners in a burning state;

[0051] 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.

[0052] In one embodiment, if the burner or burner combination corresponding to the target segment includes the first group of burners and the third group of burners, the burner or burner combination corresponding to the auxiliary segment includes the second group of burners or the fourth group of burners.

[0053] Accordingly, when the first preset condition is met, the first group of burners, the second group of burners, and the third group of burners are controlled to start combustion; when the second preset condition is met, the second group of burners is controlled to shut down; or,

[0054] Under the condition of satisfying the first preset condition, the first group of burners and the third group of burners are controlled to start combustion, and the third group of burners in the combustion state is controlled to ignite the fourth group of burners; under the condition of satisfying the second preset condition, the fourth group of burners is controlled to shut down.

[0055] In one embodiment, if the burner or burner combination corresponding to the target segment includes the fifth group of burners, the burner or burner combination corresponding to the auxiliary segment includes the third group of burners or the fourth group of burners.

[0056] Accordingly, under the condition that the first preset condition is met, the third group of burners is controlled to start combustion, and the third group of burners in combustion state is controlled to ignite the fifth group of burners; under the condition that the second preset condition is met, the third group of burners is controlled to shut down; or,

[0057] Under the condition that the first preset condition is met, the fourth group of burners is controlled to start combustion, and the fourth group of burners in the combustion state is controlled to ignite the fifth group of burners; under the condition that the second preset condition is met, the fourth group of burners is controlled to shut down.

[0058] In one embodiment, if the burner or burner combination corresponding to the target segment includes the first group of burners, the second group of burners, the third group of burners, and the fifth group of burners, then the burner or burner combination corresponding to the auxiliary segment includes the fourth group of burners.

[0059] Accordingly, when the first preset condition is met, the first group of burners, the second group of burners, the third group of burners, and the fourth group of burners are controlled to ignite, and the third group of burners or the fourth group of burners in the combustion state is controlled to ignite the fifth group of burners; when the second preset condition is met, the fourth group of burners is controlled to shut down.

[0060] 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.

[0061] This specification also provides a control device 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 device for the gas-fired water heater includes:

[0062] The load removal module is used to determine the target segment and auxiliary segment corresponding to the current required load when a first preset condition is met; the power range corresponding to the target segment includes the current required load.

[0063] The first control module is used to control the burners or burner combinations corresponding to the target segment and the auxiliary segment to perform combustion.

[0064] The second control module is used to control the burner or burner combination corresponding to the auxiliary segment to stop combustion when the second preset condition is met.

[0065] This specification also provides a computer device, including a processor and a memory for storing processor-executable instructions, wherein the processor executes the instructions to implement the steps of the control method for the gas-fired water heater described in any of the above embodiments.

[0066] This specification also provides a computer-readable storage medium storing computer instructions that, when executed, implement the steps of the control method for the gas-fired water heater described in any of the above embodiments.

[0067] 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;

[0068] The controller is configured to: determine the target segment and auxiliary segment corresponding to the current required load when a first preset condition is met; the power range corresponding to the target segment includes the current required load; control the burners or burner combinations corresponding to the target segment and the auxiliary segment to perform combustion; and control the burners or burner combinations corresponding to the auxiliary segment to stop combustion when a second preset condition is met.

[0069] The technical solution in this specification has the following significant advantages:

[0070] Each time a user starts using water, the control method of the gas-fired water heater in this application can determine the target segment and auxiliary segment corresponding to the current required load, and control the burners or burner combinations corresponding to the target segment and auxiliary segment to ignite. The power range corresponding to the target segment includes the current required load. Since the burners or burner combinations corresponding to the target segment and auxiliary segment are ignited simultaneously, the heat exchanger's heating area and heating intensity can be increased, thus enabling rapid heating, shortening the user's waiting time for hot water, and improving the user's hot water experience. Furthermore, under the condition of meeting the second preset condition, controlling the burner or burner combination corresponding to the auxiliary segment to stop ignition can save energy and prevent the water temperature from becoming too high, improving the user's constant temperature experience.

[0071] 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.

[0072] 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

[0073] 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:

[0074] Figure 1 A schematic diagram of the structure of a gas-fired water heater according to one embodiment of this specification is shown;

[0075] Figure 2 A schematic diagram of the dispenser in one embodiment of this specification is shown;

[0076] Figure 3 A schematic diagram of the combustion device and distributor in one embodiment of this specification is shown;

[0077] Figure 4 A flowchart of a control method for a gas-fired hot water device according to one embodiment of this specification is shown;

[0078] Figure 5 A schematic diagram of the target segment and the corresponding auxiliary segment in one embodiment of this specification is shown;

[0079] Figure 6 A schematic diagram of the target segment and the corresponding auxiliary segment in one embodiment of this specification is shown;

[0080] Figure 7 A schematic diagram of the target segment and the corresponding auxiliary segment in one embodiment of this specification is shown;

[0081] Figure 8 A schematic diagram of the target segment and the corresponding auxiliary segment in one embodiment of this specification is shown;

[0082] Figure 9 A schematic diagram of the target segment and the corresponding auxiliary segment in one embodiment of this specification is shown;

[0083] Figure 10 A schematic diagram of the target segment and the corresponding auxiliary segment in one embodiment of this specification is shown;

[0084] Figure 11 A schematic diagram of the target segment and the corresponding auxiliary segment in one embodiment of this specification is shown;

[0085] Figure 12 A schematic diagram of the target segment and the corresponding auxiliary segment in one embodiment of this specification is shown;

[0086] Figure 13 A schematic diagram of the target segment and the corresponding auxiliary segment in one embodiment of this specification is shown;

[0087] Figure 14 A schematic diagram of the target segment and the corresponding auxiliary segment in one embodiment of this specification is shown;

[0088] Figure 15 A schematic diagram of the target segment and the corresponding auxiliary segment in one embodiment of this specification is shown;

[0089] Figure 16 A schematic diagram of the target segment and the corresponding auxiliary segment in one embodiment of this specification is shown;

[0090] Figure 17 A schematic diagram of the target segment and the corresponding auxiliary segment in one embodiment of this specification is shown;

[0091] Figure 18 A schematic diagram of the target segment and the corresponding auxiliary segment in one embodiment of this specification is shown;

[0092] Figure 19 The graphs showing the change of outlet water temperature over time are shown for two methods: with and without auxiliary heating.

[0093] Figure 20 The graphs showing the change of outlet water temperature over time are shown for two methods: with and without auxiliary heating.

[0094] Figure 21 A schematic diagram of the control device of a gas-fired hot water device according to one embodiment of this specification is shown.

[0095] The reference numerals in the above figures are as follows:

[0096] 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

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] Figure 2 A schematic diagram of the dispenser in an embodiment of this specification is shown, such as... Figure 2 As 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.

[0103] 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 3As 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.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] In one embodiment, when the gas supply passages corresponding to the first group of burners and the second group of burners are opened, the first and second groups of burners can be ignited by a first ignition device to start combustion. It is understood that while the first group of burners is in combustion, the second group of burners can also be ignited by the first group of burners to start combustion.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] Step S401: Under the condition of satisfying the first preset condition, determine the target segment and auxiliary segment corresponding to the current required load; the power range corresponding to the target segment includes the current required load.

[0117] 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.

[0118] In this step, if the first preset condition is met, the controller can determine the target segment and auxiliary segment corresponding to the currently required load. The power range corresponding to the target segment includes the currently required load.

[0119] In some embodiments of this specification, the first preset condition includes receiving a user's water usage signal. That is, when the user starts using water, since it takes a certain amount of time for the combustion device to heat the cold water to the set temperature, the burners and burner combinations corresponding to the target segment and auxiliary segment can be activated to start combustion, so as to quickly heat the water and shorten the time the user waits for hot water.

[0120] In some embodiments of this specification, the first preset condition includes at least one of the following: the temperature difference increases beyond a preset temperature difference range; the temperature difference is the difference between the set temperature and the inlet water temperature; the inlet water volume increases beyond a preset water volume range.

[0121] Specifically, in one embodiment, if the increase in temperature difference exceeds the preset temperature difference range, it may indicate that the set temperature suddenly increases or the inlet water temperature suddenly decreases, causing the current required load to increase beyond the preset range. In order to shorten the user's waiting time for hot water, the burners and burner combinations corresponding to the target segment and auxiliary segment can be started to start combustion.

[0122] In another embodiment, in the case of multiple water usage points, if the increase in water inflow exceeds the preset water inflow range, causing the current required load to increase beyond the preset range, in order to shorten the user's waiting time for hot water, the burners and burner combinations corresponding to the target segment and auxiliary segment can be activated to start combustion.

[0123] The required load can be the heat load needed at the current moment. The controller can acquire the current inlet water temperature, set 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.

[0124] 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.

[0125] In one implementation, the controller can directly determine the corresponding target segment and auxiliary segment based on the current required load. For example, the controller can retrieve a preset segmentation method from memory, which may include multiple segments, each segment corresponding to a set of burners or a combination of burners. The memory may store the power range corresponding to each of the multiple segments. The controller can determine the target segment containing the current required load from the multiple segments based on the current required load. Then, the controller can determine the auxiliary segment based on the target segment corresponding to the current required load. As another example, the controller can retrieve the power range corresponding to each burner in at least two sets of burners. Then, based on the current required load and the power range corresponding to each burner, the controller selects one or more sets of burners from the at least two sets of burners to form the burner or burner combination corresponding to the target segment.

[0126] In one implementation, the controller can determine the auxiliary segment corresponding to the current required load based on the target segment according to preset rules. In one embodiment, the preset rules include at least one of the following: the burner or burner combination corresponding to the auxiliary segment does not overlap with the burner or burner combination corresponding to the target segment; the upper limit power of the power range corresponding to the auxiliary segment is less than the upper limit power of the power range corresponding to the target segment; and the location of the burner or burner combination corresponding to the auxiliary segment is as far away as possible from the location of the burner or burner combination corresponding to the target segment.

[0127] When determining the auxiliary segment corresponding to the current required load, the burner or burner combination corresponding to the auxiliary segment can be determined from burners other than the burner or burner combination corresponding to the target segment from at least two sets of burners.

[0128] By setting the upper limit of the power range of the auxiliary segment corresponding to the target segment to be lower than the upper limit of the power range of the target segment, excessive power can be avoided from causing the water temperature to be too high, and energy can also be saved.

[0129] By positioning the burners or burner combinations corresponding to the auxiliary section as far away as possible from the burners or burner combinations corresponding to the target section, the heat exchanger's heating area can be increased, thereby reducing heating time. Furthermore, maximizing the distance between the burners corresponding to the target section and the auxiliary section allows for simultaneous ignition and flame propagation from both sides, effectively reducing ignition and flame propagation time, and thus further reducing heating time.

[0130] Step S402: Control the burners or burner combinations corresponding to the target segment and the auxiliary segment to perform combustion.

[0131] Step S403: If the second preset condition is met, control the burner or burner combination corresponding to the auxiliary segment to stop combustion.

[0132] After determining the target segment and auxiliary segment corresponding to the current required load, the controller can control the burners or burner combinations corresponding to the target segment and auxiliary segment to ignite. If a second preset condition is met, the controller can control the burners or burner combinations corresponding to the auxiliary segment to stop ignition, while only allowing the burners or burner combinations corresponding to the target segment to continue ignition.

[0133] In some embodiments of this specification, the second preset condition may include: the burner or burner combination corresponding to the auxiliary segment continuously burns for a first preset time period.

[0134] In this embodiment, the controller can read a pre-set first preset time period from the memory. After the burner or burner combination corresponding to the auxiliary segment starts combustion, if the burner or burner combination corresponding to the auxiliary segment continues to burn for the first preset time period, the controller will control the burner or burner combination corresponding to the auxiliary segment to stop combustion.

[0135] In some embodiments of this specification, the second preset condition may include: the temperature difference between the set temperature and the outlet water temperature is within a preset temperature difference range.

[0136] In this embodiment, the controller can read the outlet water temperature from the memory in real time. When the temperature difference between the set temperature and the outlet water temperature is within the preset temperature difference range, for example, when the difference between the set temperature and the outlet water temperature is less than or equal to the preset temperature difference, the controller controls the burner or burner combination corresponding to the auxiliary segment to stop combustion.

[0137] In the above embodiments, each time a user starts using water, the control method of the gas-fired water heater in this application can determine the target segment and auxiliary segment corresponding to the current required load, and control the burners or burner combinations corresponding to the target segment and auxiliary segment to ignite. The power range corresponding to the target segment includes the current required load. Since the burners or burner combinations corresponding to the target segment and auxiliary segment are ignited simultaneously, the heat exchanger's heating area and heating intensity can be increased, thus enabling rapid heating, shortening the user's waiting time for hot water, and improving the user's hot water experience. Furthermore, under the condition of meeting the second preset condition, controlling the burner or burner combination corresponding to the auxiliary segment to stop ignition can save energy and prevent the water temperature from becoming too high, improving the user's constant temperature experience.

[0138] In some embodiments of this specification, determining the target segment and auxiliary segment corresponding to the current required load may include: determining the target segment based on the current required load; determining the auxiliary segment corresponding to the target segment; and determining the auxiliary combustion time period corresponding to the current required load based on the target segment and the auxiliary segment.

[0139] In one embodiment, the controller can directly determine the corresponding target segment and auxiliary segment based on the current required load. In another embodiment, the controller can send the identification information of the gas water heater and the current required load to the server, which then determines the corresponding target segment and auxiliary segment and returns it to the controller.

[0140] In one embodiment, the controller can retrieve a preset segmentation method from a memory. This preset segmentation method may include multiple segments, each corresponding to one or more burners. The memory may store the power ranges corresponding to each of the multiple segments. The controller can determine a target segment from the multiple segments that includes the currently required load. Then, the controller can determine auxiliary segments based on the target segment corresponding to the currently required load. For example, the controller can retrieve the power ranges corresponding to each burner in at least two sets of burners. Then, based on the currently required load and the power ranges corresponding to each burner, the controller selects one or more sets of burners from the at least two sets of burners to form the burners or burner combinations corresponding to the target segment.

[0141] In one implementation, the controller can determine the auxiliary segment corresponding to the current required load based on the target segment according to preset rules. In one embodiment, the preset rules include at least one of the following: the burner or burner combination corresponding to the auxiliary segment does not overlap with the burner or burner combination corresponding to the target segment; the upper limit power of the power range corresponding to the auxiliary segment is less than the upper limit power of the power range corresponding to the target segment; and the location of the burner or burner combination corresponding to the auxiliary segment is as far away as possible from the location of the burner or burner combination corresponding to the target segment.

[0142] In one implementation, after determining the target segment and the auxiliary segment, the combustion time period of the auxiliary segment can be determined based on the target segment and the auxiliary segment. Different target segments and / or different auxiliary segments can correspond to different auxiliary combustion times. In one embodiment, the combustion time period of the auxiliary segment can be determined based on the target segment, the auxiliary segment, and the current required load. For example, the time required to heat water to a set temperature can be determined based on the current required load, the target segment, and the auxiliary segment, and then the combustion time period of the auxiliary segment can be determined based on that time. Another example is that the time required to heat water to a set temperature minus a preset temperature can be determined based on the current required load, the target segment, and the auxiliary segment, and the combustion time period of the auxiliary segment can be determined based on that time. Through this embodiment, the corresponding target segment, auxiliary segment, and combustion time period of the auxiliary segment can be determined based on the current required load.

[0143] In some embodiments of this specification, determining the target segment corresponding to the currently required load may include: obtaining a target data table; the target data table includes the correspondence between load ranges and target segments; determining the target load range corresponding to the currently required load; and querying the target segment corresponding to the currently required load from the target data table based on the target load range.

[0144] In this embodiment, the controller can obtain a target data table from local storage or a server. The target data table may store the correspondence between load ranges and target segments. After determining the currently required load, the controller can determine the target load range corresponding to the currently required load from the target data table. Then, based on the target load range, the controller can query the target segment corresponding to the currently required load from the target data table. In this embodiment, the currently required load may correspond to at least one target load range. In one embodiment, when multiple target load ranges are involved, the controller may randomly select one. In another embodiment, when multiple target load ranges are involved, the controller may select the target load range with the largest power limit. In yet another embodiment, when multiple target load ranges are involved, the controller may select the target load range with the largest power range span. This application does not impose any limitations on this. Using the above method, the target segment can be determined using the target data table.

[0145] In some embodiments of this specification, the target data table may further include the correspondence between target segments and auxiliary segments. Accordingly, determining the auxiliary segment corresponding to the currently required load may include: querying the target data table for the auxiliary segment corresponding to the currently required load based on the target segment corresponding to the currently required load.

[0146] In this embodiment, the target data table may further include the correspondence between target segments and auxiliary segments. In one embodiment, one target segment corresponds to one auxiliary segment. In another embodiment, one target segment corresponds to multiple auxiliary segments. After the target segment is determined, the auxiliary segment corresponding to the currently required load can be queried from the target data table.

[0147] In one embodiment, when the target segment corresponding to the current required load corresponds to multiple auxiliary segments, one auxiliary segment can be randomly selected as the auxiliary segment corresponding to the current required load. In another embodiment, when the target segment corresponding to the current required load corresponds to multiple auxiliary segments, the controller can select the auxiliary segment corresponding to the current required load from the multiple auxiliary segments based on the mode data set by the user. For example, if the mode selected by the user indicates that the user wants to minimize the hot water waiting time, the auxiliary segment with the highest power limit can be selected as the auxiliary segment corresponding to the current required load. As another example, if the user selects an energy-saving mode, the auxiliary segment with the lowest power limit can be selected as the auxiliary segment corresponding to the current required load. Through the above methods, the target segment and auxiliary segment corresponding to the current required load can be determined based on the target data table.

[0148] In some embodiments of this specification, the target data table may further include the correspondence between target segments, auxiliary segments, and auxiliary combustion time periods. Accordingly, determining the auxiliary segment corresponding to the current required load may include: based on the target segment corresponding to the current required load, querying the target data table for the auxiliary segment and auxiliary combustion time period corresponding to the current required load.

[0149] Specifically, the target data table may also include the correspondence between target segments, auxiliary segments, and auxiliary combustion time periods. After determining the target segment, the controller can determine the corresponding auxiliary segment and auxiliary combustion time period from the target data table. In one embodiment, in the target data table, one target segment may correspond to at least one auxiliary segment, and one auxiliary segment may correspond to one auxiliary combustion time period. In one embodiment, when a target segment corresponds to multiple auxiliary segments and multiple auxiliary combustion time periods, the controller may randomly select one auxiliary segment and its corresponding auxiliary combustion time period as the auxiliary segment and auxiliary combustion time period corresponding to the current required load. In another embodiment, when a target segment corresponds to multiple auxiliary segments and multiple auxiliary combustion time periods, the controller may select the auxiliary segment and auxiliary combustion time period corresponding to the current required load based on user-defined mode data. Through the above method, the target segment, auxiliary segment, and auxiliary combustion time period corresponding to the current required load can be determined based on the target data table.

[0150] Accordingly, in some embodiments of this specification, the second preset condition may include: the burner or burner combination corresponding to the auxiliary segment continuously burns for the auxiliary combustion period corresponding to the current required load. When the burner or burner combination corresponding to the auxiliary segment continuously burns for the auxiliary combustion period, the burner or burner combination corresponding to the auxiliary segment can be controlled to stop burning. Setting corresponding target segments, auxiliary segments, and auxiliary combustion periods for different current required loads can effectively shorten the user's hot water waiting time and improve the user experience.

[0151] In some embodiments of this specification, the gas-fired water heater 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 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. The gas-fired water heater may further include a first ignition device and a second ignition device. The first ignition device is disposed near the first set of burners and is used to ignite the first set of burners. The second ignition device is disposed near the second set of burners and is used to ignite the second set of burners.

[0152] Accordingly, in some embodiments of this specification, when the burner or burner combination corresponding to the target segment includes the first group of burners, the burner or burner combination corresponding to the auxiliary segment includes the second group of burners. Accordingly, when a first preset condition is met, the first group of burners and the second group of burners are controlled to start combustion. When a second preset condition is met, the second group of burners is controlled to shut down.

[0153] Similarly, if the burner or burner combination corresponding to the target segment includes the second group of burners, then the burner or burner combination corresponding to the auxiliary segment includes the first group of burners. Accordingly, under a first preset condition, the first group of burners and the second group of burners are controlled to start combustion. Under a second preset condition, the first group of burners is controlled to stop combustion.

[0154] In some embodiments of this specification, the at least two sets of burners may further include a third set of burners disposed between the first set of burners and the second set of burners. The third set of burners can be ignited by the first ignition device or the second ignition device. Alternatively, the third set of burners can be ignited by the first set of burners or the second set of burners that are already in a burning state.

[0155] In some embodiments of this specification, when the burner or burner combination corresponding to the target segment includes the third group of burners, the burner or burner combination corresponding to the auxiliary segment includes the first group of burners or the second group of burners. Accordingly, when a first preset condition is met, the third group of burners is controlled to start combustion together with the first group of burners or the second group of burners; when a second preset condition is met, the first group of burners or the second group of burners is controlled to shut down.

[0156] In some embodiments of this specification, when the burner or burner combination corresponding to the target segment includes a first group of burners and a third group of burners, the burner or burner combination corresponding to the auxiliary segment includes a second group of burners. Accordingly, under a first preset condition, the first group of burners, the second group of burners, and the third group of burners can be controlled to start combustion. Under a second preset condition, the second group of burners is controlled to shut down.

[0157] Similarly, when the burner or burner combination corresponding to the target segment includes a second group of burners and a third group of burners, the burner or burner combination corresponding to the auxiliary segment includes the first group of burners. Accordingly, under the condition of a first preset condition, the first group of burners, the second group of burners, and the third group of burners can be controlled to start combustion. Under the condition of a second preset condition, the first group of burners is controlled to shut down.

[0158] In some embodiments of this specification, when the burner or burner combination corresponding to the target segment includes the first group of burners and the second group of burners, the burner or burner combination corresponding to the auxiliary segment includes the third group of burners. Accordingly, when a first preset condition is met, the first group of burners, the second group of burners, and the third group of burners are controlled to start combustion. When a second preset condition is met, the third group of burners is controlled to shut down.

[0159] 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 disposed between the first set of burners and the second set of burners. The third set of burners is disposed adjacent to the first set of burners. The fourth set of burners is disposed adjacent to the second set of burners. The third set of burners can be ignited by the first ignition device. Alternatively, the third set of burners can be ignited by the first set of burners which is in a burning state. The fourth set of burners can be ignited by the second ignition device. Alternatively, the fourth set of burners can be ignited by the second set of burners which is in a burning state.

[0160] In some embodiments of this specification, when the burner or burner combination corresponding to the target segment includes the third group of burners, the burner or burner combination corresponding to the auxiliary segment includes the second group of burners. Accordingly, when a first preset condition is met, the second group of burners and the third group of burners are controlled to start combustion. When a second preset condition is met, the second group of burners is controlled to shut down.

[0161] In some embodiments of this specification, when the burner or burner combination corresponding to the target segment includes the first group of burners and the third group of burners, the burner or burner combination corresponding to the auxiliary segment includes the second group of burners or the fourth group of burners. Accordingly, when a first preset condition is met, the first group of burners, the second group of burners, and the third group of burners are controlled to start combustion; when a second preset condition is met, the second group of burners is controlled to shut down. Alternatively, when the first preset condition is met, the first group of burners and the third group of burners are controlled to start combustion, and the third group of burners in combustion state ignites the fourth group of burners; when the second preset condition is met, the fourth group of burners is controlled to shut down.

[0162] In some embodiments of this specification, when the burner or burner combination corresponding to the target segment includes the first group of burners and the second group of burners, the burner or burner combination corresponding to the auxiliary segment includes the third group of burners or the fourth group of burners.

[0163] Accordingly, when the first preset condition is met, the first group of burners, the second group of burners, and the third group of burners or the fourth group of burners are controlled to start combustion. When the second preset condition is met, the third group of burners or the fourth group of burners is controlled to shut down.

[0164] In some embodiments of this specification, the at least two sets of burners may further include a third set of burners, a fourth set of burners, and a fifth set of burners disposed between the first set of burners and the second set of burners. The third set of burners is disposed adjacent to the first set of burners. The fourth set of burners is disposed adjacent to the second set of burners. The fifth set of burners is disposed between the third set of burners and the fourth set of burners. The third set of burners can be ignited by the first ignition device, or can be ignited by the first set of burners or the fifth set of burners that are in a burning state. The fourth set of burners can be ignited by the second ignition device, or can be ignited by the second set of burners or the fifth set of burners that are in a burning state. The fifth set of burners can be ignited by the third set of burners or the fourth set of burners that are in a burning state.

[0165] In some embodiments of this specification, when the burner or burner combination corresponding to the target segment includes the first group of burners and the third group of burners, the burner or burner combination corresponding to the auxiliary segment may include the second group of burners or the fourth group of burners. Accordingly, under a first preset condition, the first group of burners, the second group of burners, and the third group of burners can be controlled to start combustion. Under a second preset condition, the second group of burners is controlled to shut down. Alternatively, under the first preset condition, the first group of burners and the third group of burners can be controlled to start combustion, and the third group of burners in combustion state can be controlled to ignite the fourth group of burners. Under the second preset condition, the fourth group of burners can be controlled to shut down.

[0166] In some embodiments of this specification, when the burner or burner combination corresponding to the target segment includes the fifth group of burners, the burner or burner combination corresponding to the auxiliary segment may include the third group of burners or the fourth group of burners. Accordingly, under a first preset condition, the third group of burners can be controlled to start combustion, and the third group of burners in combustion state can be controlled to ignite the fifth group of burners; under a second preset condition, the third group of burners can be controlled to shut down. Alternatively, under the first preset condition, the fourth group of burners can be controlled to start combustion, and the fourth group of burners in combustion state can be controlled to ignite the fifth group of burners; under the second preset condition, the fourth group of burners can be controlled to shut down.

[0167] In some embodiments of this specification, when the burner or burner combination corresponding to the target segment includes the first group of burners, the second group of burners, the third group of burners, and the fifth group of burners, the burner or burner combination corresponding to the auxiliary segment may include the fourth group of burners. Accordingly, under a first preset condition, the first group of burners, the second group of burners, the third group of burners, and the fourth group of burners can be controlled to ignite, and the third group of burners or the fourth group of burners in combustion can be controlled to ignite the fifth group of burners. Under a second preset condition, the fourth group of burners can be controlled to shut off.

[0168] 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.

[0169] like Figure 3As 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.

[0170] like Figure 2 and Figure 3 As shown, different gas delivery channels can be distinguished using A, B, C, D, and E. Different combinations of gas delivery channels correspond to different burners or burner combinations, and thus to different sections. For example, AB can be used to represent the section corresponding to when both gas delivery channels A and B are open.

[0171] Please refer to Figures 5 to 18 The diagrams shown below illustrate the target segment and auxiliary segment in different embodiments of this specification.

[0172] like Figure 5 As shown, if the target segment is A, the auxiliary segment can be B, and the auxiliary combustion time period can be 5 seconds. Figure 6 As shown, with the target segment being C, the auxiliary segment can be B, and the auxiliary heating time period can be 7 seconds. Figure 7 As shown, when the target segment is AC, the auxiliary segment can be D, and the auxiliary combustion time period can be 6 seconds. Figure 8 As shown, when the target segment is AE, the auxiliary segment can be BD, and the auxiliary combustion time period can be 5 seconds. Figure 9 As shown, when the target segment is ACE, the auxiliary segment can be BD, and the auxiliary combustion time period can be 8 seconds. When the target segment is ABCDE, simultaneous ignition from both sides can reduce the number of ignition cycles, thereby reducing the ignition time and achieving rapid heating.

[0173] like Figure 10 As shown, when the target segment is AB, the auxiliary segment can be C or D. Figure 11 As shown, when the target segment is AD, the auxiliary segment can be C or B. Figure 12 As shown, if the target segment is ACD, the auxiliary segment can be B. Figure 13As shown, if the target segment is ABC, the auxiliary segment can be D. Figure 14 As shown, when the target segment is CE, the auxiliary segment can be BD. Figure 15 As shown, when the target segment is E, the auxiliary segment can be C or D. Figure 16 As shown, if the target segment is CD, the auxiliary segment is either A or B. Figure 17 As shown, if the target segment is ABCE, the auxiliary segment can be D. Figure 18 As shown, when the target segment is ACDE, the auxiliary segment can be B.

[0174] Please refer to Figure 19 and Figure 20 The graphs show the changes in outlet water temperature over time under different inlet water flow rates, with and without auxiliary heating. Figure 19 As shown, with a set temperature of 42°C and an inlet water flow rate of 3.5L, the heating time of the auxiliary heating method (i.e., the control method in the embodiments of this specification) is 9 seconds shorter than that of the method without auxiliary heating (i.e., the method in the prior art). Figure 20 As shown, with a set temperature of 42°C and an inlet water flow rate of 5L, the heating time of the auxiliary heating method (i.e., the control method in the embodiments of this specification) is 10 seconds shorter than that of the method without auxiliary heating (i.e., the method in the prior art). Figure 19 and Figure 2 As can be seen, the method in this embodiment can greatly shorten the time users wait for hot water, achieve rapid heating, and improve user experience.

[0175] 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.

[0176] 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.

[0177] Based on the same inventive concept, this specification also provides a control device for a gas-fired water heater, which includes a combustion device comprising at least two sets of burners, as described in the following embodiments. Since the principle of the control device for the gas-fired water heater is similar to that of the control method for the gas-fired water heater, the implementation of the control device can refer to the implementation of the control method for the gas-fired water heater, and 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 21 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 21 As shown, it includes: a determination module 2101, a first control module 2102, and a second control module 2103. The structure is described below.

[0178] The determining module 2101 is used to determine the target segment and auxiliary segment corresponding to the current required load when the first preset condition is met; the power range corresponding to the target segment includes the current required load.

[0179] The first control module 2102 is used to control the burners or burner combinations corresponding to the target segment and the auxiliary segment to perform combustion.

[0180] The second control module 2103 is used to control the burner or burner combination corresponding to the auxiliary segment to stop combustion when the second preset condition is met.

[0181] This specification also provides a gas-fired water heating device. The gas-fired water heating device may include a combustion device and a controller, the combustion device including at least two sets of burners. The controller is configured to: determine a target segment and an auxiliary segment corresponding to the currently required load when a first preset condition is met; the power range corresponding to the target segment includes the currently required load; control the burners or burner combinations corresponding to the target segment and the auxiliary segment to perform combustion; and control the burners or burner combinations corresponding to the auxiliary segment to stop combustion when a second preset condition is met.

[0182] This specification also provides a computer device based on the control method for a gas-fired water heater provided in the embodiments of this specification. Specifically, the computer device may include an input device, a processor, and a memory. The memory stores processor-executable instructions. When the processor executes the instructions, it implements the steps of the control method for the gas-fired water heater described in any of the above embodiments.

[0183] In this embodiment, the input device can specifically be one of the main devices for information exchange between the user and the computer system. The input device may include a keyboard, mouse, camera, scanner, light pen, handwriting input tablet, voice input device, etc.; the input device is used to input raw data and programs for processing these data into the computer. The input device can also receive data transmitted from other modules, units, and devices. The processor can be implemented in any suitable manner. For example, the processor can take the form of a microprocessor or processor and a computer-readable medium storing computer-readable program code (e.g., software or firmware) executable by the (micro)processor, logic gates, switches, application-specific integrated circuits (ASICs), programmable logic controllers, and embedded microcontrollers, etc. The memory can specifically be a memory device used to store information in modern information technology. The memory can include multiple layers; in digital systems, anything that can store binary data can be considered memory; in integrated circuits, a circuit without physical form but with storage function is also called memory, such as RAM, FIFO, etc.; in a system, a storage device with physical form is also called memory, such as a memory stick, TF card, etc.

[0184] In this embodiment, the specific functions and effects implemented by the computer device can be explained in comparison with other embodiments, and will not be repeated here.

[0185] This specification also provides a computer storage medium for a control method based on a gas-fired water heater, wherein the computer storage medium stores 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.

[0186] 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.

[0187] 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.

[0188] 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.

[0189] 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.

[0190] 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 of a gas water heating device, characterized by, The gas water heating device comprises a combustion device, the combustion device comprising at least two groups of burners; the gas water heating device further comprises at least two gas supply channels capable of being independently opened and shut off, the at least two gas supply channels being arranged in one-to-one correspondence with the at least two groups of burners; the at least two groups of burners comprising a first group of burners and a second group of burners; the gas water heating device further comprises a first ignition device and a second ignition device; the first ignition device being arranged near the first group of burners and used for igniting the first group of burners; the second ignition device being arranged near the second group of burners and used for igniting the second group of burners; The control method of the gas water heating device comprises: In the case that a first preset condition is met, a target segment and an auxiliary segment corresponding to a current required load are determined; a power range corresponding to the target segment contains the current required load; an upper limit power of a power range corresponding to the auxiliary segment is smaller than an upper limit power of the power range corresponding to the target segment; the current required load is determined based on an inlet water temperature, a set temperature and an inlet water flow at a current time; combustion of burners or a burner combination corresponding to the target segment and the auxiliary segment is controlled; In the case that a second preset condition is met, combustion of the burners or the burner combination corresponding to the auxiliary segment is stopped; The first preset condition comprises at least one of the following: a user's water use signal is received; an increase amplitude of a temperature difference exceeds a preset temperature difference range; the temperature difference is a difference between the set temperature and the inlet water temperature; an increase amplitude of an inlet water amount exceeds a preset water amount range.

2. The control method of the gas water heating device according to claim 1, characterized in that, The second preset condition comprises: the burners or the burner combination corresponding to the auxiliary segment continue to combust for a first preset time period.

3. The control method of the gas water heating device according to claim 1, characterized in that, The second preset condition comprises: a temperature difference between the set temperature and an outlet water temperature is within a preset temperature difference range.

4. The control method of the gas water heating device according to claim 1, characterized in that, Determining the target segment and the auxiliary segment corresponding to the current required load comprises: determining the target segment according to the current required load; determining the auxiliary segment corresponding to the target segment; determining an auxiliary combustion time period corresponding to the current required load based on the target segment and the auxiliary segment.

5. The control method of the gas water heating device according to claim 1, characterized in that, Determining the target segment corresponding to the current required load comprises: obtaining a target data table; the target data table comprising a corresponding relationship between a load range and a target segment; determining a target load range corresponding to the current required load; querying, from the target data table, the target segment corresponding to the current required load based on the target load range.

6. The control method of a gas water heating device according to claim 5, characterized in that, The target data table can further comprise a corresponding relationship between the target segment and the auxiliary segment; Correspondingly, determining the auxiliary segment corresponding to the current required load comprises: querying, from the target data table, the auxiliary segment corresponding to the current required load based on the target segment corresponding to the current required load.

7. The control method of the gas water heating device according to claim 5, characterized by, The target data table can further comprise a corresponding relationship between the target segment, the auxiliary segment and an auxiliary combustion time period; Correspondingly, determining the auxiliary segment corresponding to the current required load comprises: querying, from the target data table, the auxiliary segment and the auxiliary combustion time period corresponding to the current required load based on the target segment corresponding to the current required load.

8. The control method of a gas water heating device according to claim 4 or 7, characterized in that, The second preset condition comprises: The auxiliary segment corresponds to the burner or the burner combination that continues to burn the auxiliary combustion time period corresponding to the current required load.

9. The control method of the gas water heating device according to claim 1, characterized by, In the case where the target segment corresponds to the burner or the burner combination including the first group of burners, the auxiliary segment corresponds to the burner or the burner combination including the second group of burners. Correspondingly, in the case where the first preset condition is met, the first group of burners and the second group of burners are controlled to be turned on; in the case where the second preset condition is met, the second group of burners is controlled to be turned off.

10. The control method of the gas water heating device according to claim 1, characterized in that, The at least two groups of burners further include a third group of burners arranged between the first group of burners and the second group of burners; The third group of burners can be ignited by the first ignition device or the second ignition device; or the third group of burners can be ignited by the first group of burners or the second group of burners in the combustion state.

11. The control method of the gas water heating device according to claim 10, characterized in that, In the case where the target segment corresponds to the burner or the burner combination including the third group of burners, the auxiliary segment corresponds to the burner or the burner combination including the first group of burners or the second group of burners; Correspondingly, in the case where the first preset condition is met, the third group of burners and the first group of burners or the second group of burners are controlled to be turned on; in the case where the second preset condition is met, the first group of burners or the second group of burners is controlled to be turned off.

12. The control method of the gas water heating device according to claim 10, characterized by, In the case where the target segment corresponds to the burner or the burner combination including the first group of burners and the third group of burners, the auxiliary segment corresponds to the burner or the burner combination including the second group of burners; Correspondingly, in the case where the first preset condition is met, the first group of burners, the second group of burners and the third group of burners are controlled to be turned on; in the case where the second preset condition is met, the second group of burners is controlled to be turned off.

13. The control method of the gas water heating device according to claim 10, characterized by, In the case where the target segment corresponds to the burner or the burner combination including the first group of burners and the second group of burners, the auxiliary segment corresponds to the burner or the burner combination including the third group of burners; Correspondingly, in the case where the first preset condition is met, the first group of burners, the second group of burners and the third group of burners are controlled to be turned on; in the case where the second preset condition is met, the third group of burners is controlled to be turned off.

14. The control method of the gas water heating device according to claim 1, characterized by, The at least two groups of burners further include a third group of burners, a fourth group of burners and a fifth group of burners arranged between the first group of burners and the second group of burners; the third group of burners is arranged adjacent to the first group of burners; the fourth group of burners is arranged adjacent to the second group of burners; the fifth group of burners is arranged between the third group of burners and the fourth group of burners; The third group of burners can be ignited by the first ignition device, or can be ignited by the first group of burners in the combustion state; The fourth group of burners can be ignited by the second ignition device, or can be ignited by the second group of burners in the combustion state; The fifth group of burners can be ignited by the third group of burners or the fourth group of burners in the combustion state.

15. The control method of the gas water heating device according to claim 14, characterized in that, In the case that the target segment corresponding burner or burner combination comprises the first group of burners and the third group of burners, the auxiliary segment corresponding burner or burner combination comprises the second group of burners or the fourth group of burners; Correspondingly, in the case that the first preset condition is met, the first group of burners, the second group of burners and the third group of burners are controlled to be ignited; in the case that the second preset condition is met, the second group of burners is controlled to be turned off. Or, In the case that the first preset condition is met, the first group of burners and the third group of burners are controlled to be ignited, and the third group of burners in the burning state is controlled to ignite the fourth group of burners; in the case that the second preset condition is met, the fourth group of burners is controlled to be turned off.

16. The control method of the gas water heating device according to claim 14, characterized by, In the case that the target segment corresponding burner or burner combination comprises the fifth group of burners, the auxiliary segment corresponding burner or burner combination comprises the third group of burners or the fourth group of burners; Correspondingly, in the case that the first preset condition is met, the third group of burners is controlled to be ignited, and the third group of burners in the burning state is controlled to ignite the fifth group of burners; in the case that the second preset condition is met, the third group of burners is controlled to be turned off; or, In the case that the first preset condition is met, the fourth group of burners is controlled to be ignited, and the fourth group of burners in the burning state is controlled to ignite the fifth group of burners; in the case that the second preset condition is met, the fourth group of burners is controlled to be turned off.

17. The control method of the gas water heating device according to claim 14, characterized by, In the case that the target segment corresponding burner or burner combination comprises the first group of burners, the second group of burners, the third group of burners and the fifth group of burners, the auxiliary segment corresponding burner or burner combination comprises the fourth group of burners; Correspondingly, in the case that the first preset condition is met, the first group of burners, the second group of burners, the third group of burners and the fourth group of burners are controlled to be ignited, and the third group of burners or the fourth group of burners in the burning state is controlled to ignite the fifth group of burners; in the case that the second preset condition is met, the fourth group of burners is controlled to be turned off.

18. The control method of the gas water heating device according to claim 14, characterized by, The power range of the first group of burners and the second group of burners is the same; the power range of the third group of burners and the fourth group of burners is the same.

19. A gas water heating apparatus characterised by The gas water heating device comprises a combustion device and a controller, the combustion device comprises at least two groups of burners; the gas water heating device further comprises at least two gas supply channels which can be independently turned on and turned off, and the at least two gas supply channels are arranged in one-to-one correspondence with the at least two groups of burners; the at least two groups of burners comprise a first group of burners and a second group of burners; the gas water heating device further comprises a first ignition device and a second ignition device; the first ignition device is arranged near the first group of burners and is used for igniting the first group of burners; The second ignition device is arranged near the second group of burners and is used for igniting the second group of burners; The controller is configured to: determine a target segment and an auxiliary segment corresponding to a current required load when a first preset condition is met; a power range corresponding to the target segment contains the current required load; the current required load is determined based on an inlet water temperature, a set temperature and an inlet water flow at a current time; an upper limit power of a power range corresponding to the auxiliary segment is less than an upper limit power of a power range corresponding to the target segment; control a burner or a burner combination corresponding to the target segment and the auxiliary segment to combust; control the burner or the burner combination corresponding to the auxiliary segment to stop combusting when a second preset condition is met; wherein the first preset condition comprises at least one of the following: receiving a water use signal of a user; a temperature difference increase amplitude exceeding a preset temperature difference range; the temperature difference is a difference between the set temperature and the inlet water temperature; an inlet water flow increase amplitude exceeding a preset water flow range.

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