Gas water heater and control method and storage medium thereof

Abstract

The present invention discloses a gas water heater and a control method and storage medium thereof. The gas water heater control method includes: obtaining the power demand value of a multi-burner and determining the working order of multiple burners; determining the power allocation value of each burner in turn according to the power demand value and the working order; and controlling each burner to work according to the corresponding power allocation value. In the present invention, the working order of multiple burners represents the working priority of multiple burners, ensuring that burners with higher priorities can participate in the combustion work; when the overall power demand value of the multi-burner is known, the power allocation value of each burner is determined according to the determined working order, so that each burner can be controlled to perform combustion work according to the corresponding power allocation value. The gas water heater control method provided by the present invention can meet the various power requirements of the gas water heater, provide a variety of burner working schemes, and can flexibly configure the working priorities of multiple burners.

Description

Technical Field

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

[0002] Existing gas water heaters are generally provided with a burner, which generates heat through combustion to achieve the purpose of heat exchange with tap water. However, the combustion power of existing gas water heaters is generally single and fixed, which limits the application of gas water heaters. Summary of the invention

[0003] The main purpose of the present invention is to provide a gas water heater and a control method and storage medium thereof, aiming to solve the problem of single combustion power of traditional gas water heaters.

[0004] To achieve the above object, the present invention proposes a gas water heater control method, wherein the gas water heater comprises a multi-combustion machine, and the multi-combustion machine comprises a plurality of burners; the gas water heater control method comprises:

[0005] Obtain the power demand value of the multi-burner and determine the working order of multiple burners;

[0006] Determining the power allocation value of each of the burners in turn according to the power demand value and the working order; and

[0007] Control each of the burners to operate according to the corresponding power distribution value.

[0008] In one embodiment, the step of determining the working order of the plurality of burners comprises:

[0009] respectively obtaining the state parameters of each of the burners;

[0010] The state parameters of the plurality of burners are compared, and the plurality of state parameters are arranged in sequence according to a preset rule, and the arrangement sequence of the plurality of state parameters corresponds to the working sequence of the plurality of burners.

[0011] In one embodiment, the state parameter includes working time;

[0012] The step of determining the working order of the plurality of burners comprises:

[0013] respectively obtaining the working time of each of the burners;

[0014] The working hours of the plurality of burners are compared, and the plurality of working hours are arranged in order from small to large, and the arrangement order of the plurality of working hours corresponds to the working order of the plurality of burners.

[0015] In one embodiment, the state parameter includes cumulative power duration;

[0016] The step of determining the working order of the plurality of burners comprises:

[0017] respectively obtaining the accumulated power duration of each of the burners;

[0018] Comparing a plurality of accumulated power durations of the plurality of burners, and arranging the plurality of accumulated power durations in order from small to large, wherein the arrangement order of the plurality of accumulated power durations corresponds to the working order of the plurality of burners;

[0019] The cumulative power duration satisfies the following relationship:

[0020]

[0021] Among them, T w is the cumulative power duration of the burner, i is the working duration of the burner, and w is the operating power of the burner during the working duration.

[0022] In one embodiment, the steps of comparing the state parameters of the plurality of burners and sequentially arranging the plurality of state parameters according to a preset rule, wherein the arrangement order of the plurality of state parameters corresponds to the working order of the plurality of burners, include:

[0023] Comparing a plurality of state parameters of a plurality of the burners, and obtaining a maximum value and a minimum value of the plurality of state parameters;

[0024] Obtaining a parameter difference between the maximum value of the parameter and the minimum value of the parameter;

[0025] When the parameter difference reaches a preset difference, the multiple state parameters are arranged in sequence according to a preset rule, and the arrangement order of the multiple state parameters corresponds to the working order of the multiple burners.

[0026] In one embodiment, the state parameter includes working time or accumulated power time;

[0027] After the step of respectively obtaining the state parameters of each of the burners, the method further includes:

[0028] When the state parameter reaches a preset life value, a prompt message is issued.

[0029] In one embodiment, before the step of obtaining the power demand value of the multi-combustion engine and determining the working order of the multiple burners, the step further includes:

[0030] Get the water inlet flow value of the gas water heater;

[0031] When the water inlet flow value reaches a preset flow value, the step of obtaining the power demand value of the multi-burner is performed.

[0032] In one embodiment, the step of obtaining the power demand value of the multi-combustion engine includes:

[0033] Obtain the water inlet volume, water inlet temperature and user-set temperature of the gas water heater;

[0034] The power demand value of the multi-combustion engine is calculated according to the water inlet volume, the water inlet temperature and the user-set temperature.

[0035] In one embodiment, the step of determining the power allocation value of each of the burners in sequence according to the power demand value and the working order comprises:

[0036] According to the power demand value P0, determining the working number N of the burners that meet the power demand value P0;

[0037] If the determined working number N of the burners is 1, one of the burners is selected to work according to the working sequence, and the power allocation value of the working burner is determined to be the power demand value P0.

[0038] In one embodiment, after the step of determining the working number N of burners that meet the power demand value P0 according to the power demand value P0, the method further includes:

[0039] If the working number N>1, select N burners to work according to the working order;

[0040] Among the N burners that are determined to be in operation, the power allocation values ​​of N-1 burners are the set power value P1, and the power allocation value of the remaining burner is P0-(N-1)*P1.

[0041] In one embodiment, the multi-combustion machine further comprises a regulating valve arranged in one-to-one correspondence with the plurality of burners, the regulating valve being used to adjust the mixed gas intake amount of the corresponding burner;

[0042] The step of controlling each of the burners to operate according to the corresponding power allocation value comprises:

[0043] Determining the mixed gas distribution amount of each of the burners according to the power distribution value of each of the burners;

[0044] According to the mixed gas distribution amount of each of the burners, the corresponding regulating valve is controlled to operate so as to provide the corresponding mixed gas distribution amount to each of the burners.

[0045] In one embodiment, the multi-combustion engine further comprises a premixer, the premixer is used to receive gas and air and premix them to provide mixed gas for the multiple burners, the premixer comprises a fan and a gas regulating valve;

[0046] After the step of obtaining the power demand value of the multi-combustion engine, the method further includes:

[0047] Determining the total amount of mixed gas required by the multi-combustion engine according to the power demand value;

[0048] The fan and the gas regulating valve are controlled to operate according to the total amount of the mixed gas demand.

[0049] In one embodiment, after the step of controlling each of the burners to operate according to the corresponding power allocation value, the method further comprises:

[0050] Get the actual water outlet temperature of the gas water heater and the user-set temperature;

[0051] Calculating a deviation between the actual outlet water temperature and the user set temperature according to the actual outlet water temperature and the user set temperature;

[0052] When the deviation value exceeds a preset deviation value, calculating the deviation power;

[0053] At least one of the burners is controlled to operate according to the deviation power.

[0054] In addition, to achieve the above object, the present invention also provides a gas water heater, comprising:

[0055] A main body, the main body comprising a multi-combustion machine, the multi-combustion machine comprising a plurality of burners; and

[0056] A control device, which is used to control the operation of the main body. The control device includes a memory, a processor, and a gas water heater control program stored in the memory and executable on the processor. The gas water heater control program is configured to implement the steps of the gas water heater control method as described above.

[0057] In addition, to achieve the above-mentioned purpose, the present invention also provides a storage medium, on which a gas water heater control program is stored, and when the gas water heater control program is executed by a processor, the steps of the gas water heater control method as described above are implemented.

[0058] In the technical solution provided by the present invention, the working order of multiple burners represents the working priority of multiple burners, ensuring that burners with higher priorities can participate in the combustion work; when the overall power demand value of the multi-burner is known, the power allocation value of each burner is determined according to the determined working order, so that each burner can be controlled to perform combustion work according to the corresponding power allocation value. The gas water heater control method provided by the present invention can meet the various power requirements of the gas water heater, provide a rich burner working scheme, and can flexibly configure the working priorities of multiple burners. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0060] Figure 1 It is a flow chart of the first embodiment of the gas water heater control method of the present invention;

[0061] Figure 2 It is a flow chart of a second embodiment of the gas water heater control method of the present invention;

[0062] Figure 3 It is a flow chart of a third embodiment of a gas water heater control method of the present invention;

[0063] Figure 4 It is a flow chart of a fourth embodiment of a gas water heater control method of the present invention;

[0064] Figure 5 It is a flow chart of a fifth embodiment of a gas water heater control method of the present invention;

[0065] Figure 6 It is a flow chart of a sixth embodiment of a gas water heater control method of the present invention;

[0066] Figure 7 It is a flow chart of the seventh embodiment of the gas water heater control method of the present invention;

[0067] Figure 8 It is a flow chart of an eighth embodiment of a gas water heater control method of the present invention;

[0068] Fig. 9 It is a flow chart of a ninth embodiment of a gas water heater control method of the present invention;

[0069] Fig.10It is a flow chart of the tenth embodiment of the gas water heater control method of the present invention;

[0070] Fig.11 It is a flow chart of the eleventh embodiment of the gas water heater control method of the present invention;

[0071] Fig.12 It is a flow chart of the twelfth embodiment of the gas water heater control method of the present invention;

[0072] Fig.13 A schematic flow chart of a thirteenth embodiment of a gas water heater control method provided by the present invention;

[0073] Fig.14 A schematic structural diagram of an embodiment of a multi-combustion engine provided by the present invention;

[0074] Fig.15 for Fig.14 The enlarged schematic diagram of point A in the middle;

[0075] Fig.16 for Fig.15 A longitudinal section diagram of part of the structure of the burner;

[0076] Fig.17 for Fig.14 A schematic diagram of the enlarged structure at B in the middle;

[0077] Fig.18 It is a schematic diagram of the structure of a control device for a hardware operating environment involved in an embodiment of the present invention.

[0078] Description of Figure Numbers:

[0079]

[0080]

[0081] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0082] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0083] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0084] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0085] Existing gas water heaters are generally provided with a burner, which generates heat through combustion to achieve the purpose of heat exchange with tap water. However, the combustion power of existing gas water heaters is generally single and fixed, which limits the application of gas water heaters.

[0086] In view of the above, the present invention provides a gas water heater, which includes a main body and a control device. The main body includes a multi-burner, and the multi-burner includes multiple burners; the control device is used to control the operation of the main body.

[0087] See also Figures 14 to 17 , the accompanying drawings show a specific embodiment of the multi-combustion engine provided by the present invention.

[0088] The multi-burner 1 provided by the present invention includes a premixer 100 and a plurality of burners 200, wherein the premixer 100 is used to receive gas and air for premixing; the burner 200 forms a combustion chamber; the combustion chambers of the plurality of burners 200 are respectively connected to the premixer 100, and at least one combustion chamber of the multi-burner 1 is used to receive the mixed gas provided by the premixer 100 and ignite it for combustion.

[0089] In the technical solution provided by the present invention, the premixer 100 premixes the fuel gas and the air to form a mixed gas; multiple burners 200 are connected to the premixer 100 to realize parallel connection of multiple burners 200; the premixer 100 can provide each burner 200 with the mixed gas required for combustion, and by selecting the required number of burners 200 to work synchronously, different combustion powers of the multi-combustion machine 1 can be enabled, thereby obtaining different heat loads and producing different heat exchange effects.

[0090] It can be understood that the premixer 100 generally includes a housing 110, and the housing 110 is formed with a gas channel 111, an air channel 112 and a mixing channel 113. The air inlet of the mixing channel 113 is respectively connected to the gas channel 111 and the air channel 112, and the air outlet of the mixing channel 113 is respectively connected to the plurality of combustion chambers. The gas channel 111 is used to access external gas, and the air channel 112 is used to access external air, and the gas and air are mixed in the mixing channel 113.

[0091] In the mixed gas premixed by the premixer 100, the ratio of fuel gas to air needs to be set within an appropriate range, so as to ensure that the burner 200 can be fully and efficiently burned in the mixed gas environment.

[0092] Based on this, in a further solution, the premixer 100 may be provided with a proportional valve at the gas channel 111 and / or the air channel 112. For distinction, the proportional valve provided at the gas channel 111 may be defined as a gas proportional valve 130, and the proportional valve provided at the air channel 112 may be defined as an air proportional valve; by operating the gas proportional valve 130 and / or the air proportional valve, the gas intake amount and / or the air intake amount in the premixer 100 may be adjusted, so that a mixed gas of a desired proportion may be obtained. In this embodiment, a gas proportional valve 130 is provided at the gas channel 111, and the gas intake amount may be correspondingly adjusted by adjusting the opening of the gas proportional valve 130.

[0093] In addition, the premixer 100 may also be provided with a fan 120, which can drive the airflow composed of gas and / or air in the premixer 100 to flow, so that the airflow can enter each combustion chamber roughly along the desired direction and at the desired speed. In specific applications, the fan 120 can be set at the air channel 112 to accelerate the circulation of air, and cooperate with the gas proportional valve 130 to achieve separate control of the air intake and gas intake; or, the fan 120 can be set at the mixing channel 113, which can not only drive the circulation of gas, air and mixed gas, but also the gas and air can be dispersed under the disturbance of the rotating blades of the fan 120 to obtain a more complete mixing.

[0094] The premixer 100 is generally connected to the multiple burners 200 through a pipe 500. Specifically, the air inlet of the pipe 500 is connected to the outlet of the mixing channel 113 of the premixer 100. The pipe 500 has multiple air outlets, which are respectively connected to the air inlets of multiple combustion chambers. The provision of the pipe 500 helps to stabilize the flow rate of the mixed gas and can evenly distribute the mixed gas output by the premixer 100 to the multiple burners 200.

[0095] The number of the premixer 100 is not limited in the present design, and can be set to one or more according to actual needs. When the premixer 100 is set to multiple, each of the multiple premixers 100 is connected to multiple burners 200, that is, multiple burners 200 are connected in parallel at the mixed gas outlet of each premixer 100. The setting of multiple premixers 100 can increase the premixing amount of the mixed gas, so that when multiple burners 200 are working at the same time, sufficient mixed gas can be provided for multiple burners 200.

[0096] The burner 200 is used to receive the mixed gas provided by the premixer 100, ignite the mixed gas, and make the mixed gas stably burn in the combustion chamber of the burner 200, thereby obtaining high-temperature flue gas. The combustion chamber is generally provided with a mixed gas inlet and a flue gas outlet, and the mixed gas inlet and the flue gas outlet can be set at any position of the combustion chamber, for example, on opposite sides of the combustion chamber, or arranged at intervals on a certain side surface of the combustion chamber. The flue gas outlet is used to communicate with the heat exchange chamber of the gas water heater, so that the high-temperature flue gas generated in the combustion chamber can exchange heat with tap water, and finally produce hot water.

[0097] The multiple burners 200 can be arranged on the multi-combustion machine 1 in any suitable manner to adapt to different shapes, sizes and installation orientations of the multi-combustion machine 1. In one embodiment, the multiple burners 200 are arranged linearly and side by side at intervals. Such an arrangement can also make the arrangement of the above-mentioned pipeline 500 simpler and more convenient, and directly extend and arrange along the arrangement direction of the multiple combustion chambers.

[0098] The burner 200 may be a burner 200 for conventional combustion, which will not be described in detail here; or, among the multiple burners 200, at least one of the burners 200 is configured as a burner capable of high-temperature air combustion. It can be understood that the main characteristics of high-temperature air combustion are: the chemical reaction needs to occur in a high-temperature, low-oxygen environment, the reactant temperature is higher than its auto-ignition temperature, and the maximum temperature rise during the combustion process is lower than its auto-ignition temperature, and the oxygen volume fraction is diluted to an extremely low concentration by the combustion products. Compared with conventional combustion, in this combustion state, the pyrolysis of the fuel is suppressed, the flame thickness becomes thicker, and the flame front disappears, so that the temperature in the entire furnace is very uniform, the peak combustion temperature is low and the noise is extremely small, and the pollutant NOx and CO emissions are greatly reduced. However, achieving high-temperature air combustion requires certain conditions: it is necessary to ensure that the oxygen concentration in most areas of the furnace is lower than a certain value, generally lower than 5% to 10%, to ensure that the gas is fully combusted and burned evenly, and the temperature is higher than the auto-ignition point of the fuel to maintain auto-ignition.

[0099] Specifically, the burner 200 for realizing high-temperature air combustion includes a shell 210, a preheating burner 220 and an injector 230, wherein the shell 210 forms the combustion chamber, and the combustion chamber includes a first combustion chamber 211 and a second combustion chamber 212 which are connected in sequence, and the first combustion chamber 211 is used to receive the mixed gas provided by the premixer 100; the preheating burner 220 is used to ignite the mixed gas in the first combustion chamber 211 and heat the temperature in the first combustion chamber 211 to a preset temperature; the injector 230 is used to inject gas and / or air into the second combustion chamber 212, so that a high-temperature air combustion reaction is carried out in the second combustion chamber 212.

[0100] The preheating burner 220 is arranged in the first combustion chamber 211, and can be specifically arranged at the mixed gas inlet of the first combustion chamber 211; the preheating burner 220 ignites the mixed gas in the first combustion chamber 211, so that the mixed gas burns and forms a preset high temperature in the area, thereby achieving high-temperature preheating and forming high-temperature flue gas.

[0101] The injector 230 injects gas and / or air into the second combustion chamber 212. The gas is ignited by the high-temperature gas and continues to burn in the second combustion chamber 212, forming a jet combustion area. In addition, the gas and / or air injected at a preset speed cooperate with the above-mentioned high-temperature flue gas to form a suction effect in the second combustion chamber 212, forming a flue gas reflux zone, so that part of the high-temperature flue gas (waste gas rich in N2 and CO2) circulates inside the second combustion chamber 212 to dilute the reactants, and then fully dilutes the injected gas and air to form a lower oxygen concentration, reduce the combustion reaction rate, and continue to maintain a higher temperature in the second combustion chamber 212, ensuring that the temperature in the second combustion chamber 212 is higher than the auto-ignition point of the fuel, achieving auto-ignition, and thus realizing high-temperature air combustion.

[0102] The injector 230 may be disposed on the side wall of the second combustion chamber 212, and a plurality of the injectors 230 may be arranged at intervals along the circumference of the second combustion chamber 212. The plurality of injectors 230 may be evenly arranged along each side wall of the second combustion chamber 212, or may be concentrated on the opposite side walls of the second combustion chamber 212. The injection direction of the injector 230 is not limited, and may be injected in any horizontal direction, or slightly inclined toward the direction of the preheating burner 220.

[0103] Furthermore, in one embodiment, the multi-combustion machine 1 further includes a plurality of regulating valves 300 corresponding to the plurality of burners 200, each regulating valve 300 being arranged on the connecting pipeline 510 between the premixer 100 and the corresponding combustion chamber to adjust the mixed gas intake amount of the corresponding combustion chamber. The regulating valve 300 can adjust the opening and closing of the corresponding connecting pipeline 510, and circulate the mixed gas at any opening, so as to adjust the mixed gas intake amount of the corresponding combustion chamber, so that the mixed gas intake amount of each combustion chamber can be adjusted and controlled.

[0104] Based on the above, in one embodiment, the multi-burner 1 also includes a sensing device and a controller, wherein the sensing device is used to sense the power demand value of the multi-burner 1; the controller is electrically connected to the sensing device and the plurality of regulating valves 300, respectively, to control at least one of the regulating valves 300 to operate according to the power demand value, so that at least one of the burners 200 operates to meet the power demand value.

[0105] The specific scheme of the sensing device is not limited. In one embodiment, the sensing device can be an input device, and the input device can be but not limited to various buttons, touch screens, microphones, etc., that is, the user can manually press, touch the display and control structure of the gas water heater, or directly make a voice input to enter the required power demand value. It should be noted that when the sensing device is an input device, it is not limited to the user only inputting the power value. According to different application situations, the user can input any parameter that can be ultimately converted into a power value, for example, the temperature value, the application environment, the current season and region, etc. can be input.

[0106] Of course, the sensing device can also be a detection device. Specifically, in one embodiment, the sensing device includes a water flow sensor 410 and a first temperature sensor 420, wherein the water flow sensor 410 is used to sense the water inlet amount of the gas water heater; the first temperature sensor 420 is used to detect the water inlet temperature of the gas water heater; wherein the controller is electrically connected to the water flow sensor 410 and the temperature detection component, respectively, to obtain the power demand value according to the water flow sensor 410, the water inlet temperature and the received user-set temperature.

[0107] The user set temperature can be directly obtained by communicating with the control device of the gas water heater. Specifically, when the water inlet temperature and the user set temperature are known, the required temperature rise can be calculated, and the product of the temperature rise and the current water flow rate can be converted to obtain the required heat load corresponding to the required temperature rise. Since the specification parameters of each burner 200 are known, the required heat load can determine the corresponding power demand value.

[0108] Furthermore, in one embodiment, the sensing device also includes a second temperature sensor 430, which is used to sense the actual water outlet temperature of the gas water heater; the controller is electrically connected to the second temperature sensor 430 to control the operation of the regulating valve 300 according to the deviation value between the actual water outlet temperature and the user-set temperature.

[0109] It can be understood that the second temperature sensor 430 can detect the actual water outlet temperature value of the hot water produced after the at least one burner 200 is working. Under normal circumstances, the actual water outlet temperature should be roughly the same as the user-set temperature, and the deviation between the two will not exceed the preset deviation. At this time, there is no need to change the previous setting, and the control valve 300 continues to work according to the previous setting; and when there is a large deviation between the actual water outlet temperature and the user-set temperature, for example, when the deviation exceeds the preset deviation, it indicates that there is a problem with the previous setting, and the working scheme of the regulating valve 300 needs to be adjusted. For example, when the actual water outlet temperature is much lower than the user-set temperature, the opening of at least one regulating valve 300 can be appropriately increased to provide more mixed gas to the corresponding combustion chamber to increase the combustion power of the burner 200; conversely, when the actual water outlet temperature is much higher than the user-set temperature, the opening of at least one regulating valve 300 can be appropriately reduced to provide less mixed gas for the corresponding combustion to reduce the combustion power of the burner 200.

[0110] In addition, when there is a large deviation between the actual water outlet temperature and the user set temperature, it can also indicate that some components in the multi-burner 1, such as a regulating valve 300, a preheating burner 220 or an injector 230, are abnormal and can be checked in time.

[0111] In order to accurately determine whether the user currently needs water, that is, to determine whether the multi-burner 1 currently needs to work, in one embodiment, the multi-burner 1 also includes a sensor 440, and the sensor 440 is used to trigger a water use signal when it senses that the gas water heater is using water; the controller is electrically connected to the sensor 440 to control the sensing device to work when the water use signal is received.

[0112] Similarly to the above, the sensor 440 can be an input device for the user to directly input whether water is needed; or the sensor 440 can be any sensor, such as a human body sensor 440, which can determine that the user has a water demand when it senses that the user is performing a setting operation in the setting area. The setting operation of the setting area can be, but is not limited to: closing the water outlet and placing dirty dishes in the kitchen sink, or taking off clothes in the bathroom, etc.

[0113] Of course, the sensor 440 can also directly use the water flow sensor 410 mentioned above. When the water flow sensor 410 senses that the current water flow reaches the set flow value, it indicates that there is a current water demand, which can trigger the sensing and control work of the above-mentioned sensing device and controller, and after the water flow stabilizes, the specific water flow can be detected.

[0114] It should be noted that the water flow sensor 410, the first temperature sensor 420 and the second temperature sensor 430 mentioned above can be set as a group, or set as multiple corresponding to multiple burners 200, so as to respectively sense the above parameters of each burner 200 and realize flexible sensing control of each burner 200.

[0115] Since the multiple burners 200 require different mixed gas intake amounts when working at different powers, in one embodiment, when the multi-combustion burner 1 includes a sensing device and a controller as described above, the controller can be set to be electrically connected to the sensing device, the gas proportional valve 130, and the fan 120, respectively, so as to control the gas proportional valve 130 and the fan 120 to work according to the power demand value.

[0116] For example, when the power demand value is large, so that more burners 200 need to be started and operated at the same time, the opening of the gas proportional valve 130 can be increased and the speed of the fan 120 can be increased to achieve more premixing of gas and air; conversely, when the power demand value is small, so that fewer burners 200 need to be started and operated at the same time, the opening of the gas proportional valve 130 can be reduced and the speed of the fan 120 can be slowed down to reduce the premixing of gas and air.

[0117] A plurality of burners 200 may be connected to the same exhaust pipe 4, the same water inlet pipe 2 and the same water outlet pipe 3. The first temperature sensor 420 and the water flow sensor 410 are arranged on the water inlet pipe 2, and the second temperature sensor 430 is arranged on the water outlet pipe 3.

[0118] See also Fig.18 , Fig.18 It is a schematic diagram of the structure of the control device of the hardware operating environment involved in the embodiment of the present invention. It should be noted that the control device can directly constitute the controller in the multi-combustion machine 1, or be electrically connected to the controller to achieve signal communication between the control device and the controller.

[0119] like Fig.18As shown, the control device may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface). The memory 1005 may be a high-speed RAM memory, or it may be a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0120] Those skilled in the art will understand that Fig.18 The structure shown in the figure does not constitute a limitation on the control device, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0121] like Fig.18 As shown, the memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module and a gas water heater control program.

[0122] Fig.18 The control device shown calls the gas water heater control program stored in the memory 1005 through the processor 1001, and performs the following operations:

[0123] The gas water heater comprises a multi-combustion machine 1, and the multi-combustion machine 1 comprises a plurality of burners 200; the gas water heater control method comprises:

[0124] Obtain the power demand value of the multi-combustion engine 1;

[0125] Determining the operating order of the plurality of burners 200;

[0126] Determining the power distribution value of each of the burners 200 in turn according to the power demand value and the working order; and

[0127] Each of the burners 200 is controlled to operate according to the corresponding power allocation value.

[0128] Furthermore, the processor 1001 may call the gas water heater control program stored in the memory 1005, and further perform the following operations:

[0129] The step of determining the working order of the plurality of burners 200 comprises:

[0130] Respectively obtaining state parameters of each of the burners 200;

[0131] The state parameters of the plurality of burners 200 are compared, and the plurality of state parameters are arranged in sequence according to a preset rule, and the arrangement sequence of the plurality of state parameters corresponds to the working sequence of the plurality of burners 200 .

[0132] Furthermore, the processor 1001 may call the gas water heater control program stored in the memory 1005, and further perform the following operations:

[0133] The state parameters include working hours;

[0134] The step of determining the working order of the plurality of burners 200 comprises:

[0135] Obtaining the working time of each of the burners 200 respectively;

[0136] The working hours of the plurality of burners 200 are compared, and the plurality of working hours are arranged in order from small to large, and the arrangement order of the plurality of working hours corresponds to the working order of the plurality of burners 200.

[0137] Furthermore, the processor 1001 may call the gas water heater control program stored in the memory 1005, and further perform the following operations:

[0138] The state parameters include cumulative power duration;

[0139] The step of determining the working order of the plurality of burners 200 comprises:

[0140] Obtaining the accumulated power duration of each of the burners 200 respectively;

[0141] Comparing the multiple accumulated power durations of the multiple burners 200, and arranging the multiple accumulated power durations in order from small to large, the arrangement order of the multiple accumulated power durations corresponding to the working order of the multiple burners 200;

[0142] The cumulative power duration satisfies the following relationship:

[0143]

[0144] Among them, T w is the cumulative power duration of the burner 200, i is the working duration of the burner 200, and w is the operating power of the burner 200 during the working duration.

[0145] Furthermore, the processor 1001 may call the gas water heater control program stored in the memory 1005, and further perform the following operations:

[0146] The step of comparing the state parameters of the plurality of burners 200 and sequentially arranging the plurality of state parameters according to a preset rule, wherein the arrangement order of the plurality of state parameters corresponds to the working order of the plurality of burners 200, comprises:

[0147] Comparing a plurality of state parameters of the burners 200, and obtaining a maximum value and a minimum value of the state parameters;

[0148] Obtaining a parameter difference between the maximum value of the parameter and the minimum value of the parameter;

[0149] When the parameter difference reaches a preset difference, the multiple state parameters are arranged in sequence according to a preset rule, and the arrangement sequence of the multiple state parameters corresponds to the working sequence of the multiple burners 200.

[0150] Furthermore, the processor 1001 may call the gas water heater control program stored in the memory 1005, and further perform the following operations:

[0151] The state parameters include working time or accumulated power time;

[0152] After the step of respectively obtaining the state parameters of each of the burners 200, the method further includes:

[0153] When the state parameter reaches a preset life value, a prompt message is issued.

[0154] In addition, the present invention also provides a gas water heater control method, please refer to Figures 1 to 14 , which is a specific embodiment of the gas water heater control method provided by the present invention.

[0155] See also Figure 1 In a first embodiment of the gas water heater provided by the present invention, the gas water heater control method includes:

[0156] Step S100: obtaining the power demand value of the multi-combustion engine 1;

[0157] In this embodiment, the gas water heater generates high-temperature flue gas through the operation of the multi-burner 1, and uses the high-temperature flue gas to exchange heat with tap water, and finally produces hot water. Therefore, the combustion power of the multi-burner 1 is related to the heat exchange effect of the gas water heater. In actual application, it can be set so that the user directly manually inputs the power demand value of the multi-burner 1 or other parameters that can determine the power demand value; of course, it can also be set so that the gas water heater can obtain the power demand value of the multi-burner 1 through various sensors set by itself. For details, please refer to the following embodiments.

[0158] Step S200: determining the working order of the plurality of burners 200;

[0159] In this embodiment, since a plurality of burners 200 are arranged in parallel in the multi-burner 1, in order to balance the working conditions of the burners 200 and ensure that the burners 200 that are working each time are within their service life and in the best use state, the working order of the plurality of burners 200 can be determined according to preset rules, that is, the working priority of each burner 200 can be determined.

[0160] It should be noted that since both step S100 and step S200 are for obtaining the required parameters, the present design does not restrict the order in which the two are performed. In one embodiment, the working order of the multiple burners 200 may be determined first, and then the power demand value of the multi-burner 1 may be obtained; or, as in the present embodiment, the power demand value of the multi-burner 1 may be obtained first, and then the working order of the multiple burners 200 may be determined.

[0161] Step S310: determining the power allocation value of each of the burners 200 in turn according to the power demand value and the working order; and,

[0162] In this embodiment, the working number and specific specifications of the burners 200 included in the multi-combustion machine 1 are known. When the user's current power demand value and working order are known, the power demand value can be allocated to multiple burners 200 according to the preset rules, and the power value allocated to each burner 200 is the power allocation value. It can be understood that the specific value of the power allocation value is not limited in this design. When the power allocation value is zero, it means that the burner 200 corresponding to the power allocation value does not need to start the combustion work; when the power allocation value is greater than zero, the corresponding burner 200 can be controlled to work according to the power allocation value.

[0163] Step S400: Control each of the burners 200 to operate according to the corresponding power allocation value.

[0164] In this embodiment, when each burner 200 receives its corresponding power allocation value, the corresponding power allocation value can be converted into combustion parameters related to combustion, such as the flow rate of the mixed gas, the air-gas ratio in the mixed gas, etc. Each burner 200 works according to the corresponding power allocation value, wherein when the power allocation value is equal to zero, the corresponding burner 200 can be set to remain closed or in a standby state, or the corresponding burner 200 is turned on, but the mixed gas required for combustion cannot be connected, and the ignition device required for ignition cannot be started, etc.; when the power allocation value is greater than zero, the corresponding burner 200 is turned on, and can directly connect to the required mixed gas, and perform the ignition operation in time to start combustion.

[0165] In the technical solution provided by the present invention, the working order of multiple burners 200 represents the working priority of multiple burners 200, ensuring that burners 200 with higher priorities can participate in the combustion work; when the overall power demand value of the multi-burner 1 is known, the power allocation value of each burner 200 is determined according to the determined working order, so that each burner 200 can be controlled to perform combustion work according to the corresponding power allocation value. The gas water heater control method provided by the present invention can meet the various power requirements of the gas water heater, provide a rich burner 200 working scheme, and can flexibly configure the working priorities of multiple burners 200.

[0166] Next, see Figure 2 In the second embodiment of the gas water heater provided by the present invention, the step S200: determining the working order of the plurality of burners 200 comprises:

[0167] Step S210: respectively obtaining the state parameters of each of the burners 200;

[0168] Step S220: comparing the state parameters of the plurality of burners 200 , and arranging the plurality of state parameters in sequence according to a preset rule, wherein the arrangement sequence of the plurality of state parameters corresponds to the working sequence of the plurality of burners 200 .

[0169] In this embodiment, each burner 200 has a corresponding state parameter, and the state parameter may include but is not limited to working time, cumulative power time, cumulative power consumption, etc. The state parameter is used to characterize the use frequency and health status of each burner 200. The state parameters of multiple burners 200 are compared one by one, and then arranged in a manner from large to small, from small to large, from average to two extremes, from single stage to average, etc. For example, when the value of a state parameter is larger, it indicates that the use frequency of the corresponding burner 200 is larger and the health status is worse, the working order can be determined in the order from small to large, or from the average value, to the minimum value, to the maximum value; on the contrary, when the value of a state parameter is smaller, it indicates that the use frequency of the corresponding burner 200 is larger and the health status is worse, the working order can be determined in the order from large to small, or from the average value, to the maximum value, to the minimum value, etc.

[0170] Next, see Figure 3 In the third embodiment of the gas water heater provided by the present invention, if the state parameter includes the working time, the step S200: determining the working order of the plurality of burners 200 includes:

[0171] Step S210a: respectively obtaining the working time of each of the burners 200;

[0172] Step S220a: compare the working hours of the plurality of burners 200, and arrange the working hours in order from small to large, and the arrangement order of the working hours corresponds to the working order of the plurality of burners 200.

[0173] In this embodiment, when each burner 200 is working, the control device will record each working time of the burner 200 and accumulate each working time. Since the longer the working time, the more frequently the corresponding burner 200 is used and the worse the health state, when it is necessary to redefine the working order, multiple working times can be arranged in order from small to large, so that when allocating power, the burner 200 with a smaller working time is allocated first.

[0174] Alternatively, see Figure 4 In the fourth embodiment of the gas water heater provided by the present invention, if the state parameter includes the accumulated power duration; then the step S200: determining the working order of the plurality of burners 200 includes:

[0175] Step S210b: respectively obtaining the accumulated power duration of each of the burners 200;

[0176] Comparing the multiple accumulated power durations of the multiple burners 200, and arranging the multiple accumulated power durations in order from small to large, the arrangement order of the multiple accumulated power durations corresponding to the working order of the multiple burners 200;

[0177] The cumulative power duration satisfies the following relationship:

[0178]

[0179] Among them, T w is the cumulative power duration of the burner 200, i is the working duration of the burner 200, and w is the operating power of the burner 200 during the working duration.

[0180] Similarly to the above, in this embodiment, when each burner 200 is working, the control device will record each power duration of the burner 200, that is, the operating power value under a single working duration, and accumulate each power duration. Since the larger the cumulative power duration, the more frequently the corresponding burner 200 is used and the worse the health status, when it is necessary to redefine the working order, multiple cumulative power durations can be arranged in order from small to large, so that when allocating power, the burner 200 with a smaller cumulative power duration is preferentially allocated. According to the cumulative power duration, the state of each burner 200 can be determined more accurately, so that the working order of multiple burners 200 determined is more accurate.

[0181] Also, see Figure 5 In the fifth embodiment of the gas water heater provided by the present invention, the step S220: comparing the state parameters of the plurality of burners 200, and arranging the plurality of state parameters in sequence according to a preset rule, the arrangement sequence of the plurality of state parameters corresponding to the working sequence of the plurality of burners 200 includes:

[0182] Step S221: comparing a plurality of state parameters of the burners 200, and obtaining a maximum value and a minimum value of the state parameters;

[0183] Step S222: Obtaining a parameter difference between the maximum value of the parameter and the minimum value of the parameter;

[0184] Step S223: When the parameter difference reaches a preset difference, the multiple state parameters are arranged in sequence according to a preset rule, and the arrangement order of the multiple state parameters corresponds to the working order of the multiple burners 200.

[0185] It can be understood that the present design does not limit the rearrangement of the working order of the multiple burners 200 before each operation of the gas water heater. Specifically, after obtaining the state parameters of the multiple burners 200, the multiple state parameters can be compared one by one, and the maximum value and the minimum value of the parameter in the multiple state parameters can be selected; then, the parameter difference between the maximum value and the minimum value of the parameter is calculated, and it is determined whether the parameter difference reaches the preset difference. When the parameter difference is less than the preset difference, there is no need to re-shoot the working order of the multiple burners 200, and the previous working order can be followed; when the parameter difference is greater than or equal to the preset difference, according to the above rules, the working order of the multiple burners 200 is re-shot.

[0186] For further information, see Figure 6 In the sixth embodiment of the gas water heater provided by the present invention, the state parameter includes the working time or the accumulated power time; after the step S210: respectively obtaining the state parameter of each burner 200, it also includes:

[0187] Step S230: When the state parameter reaches a preset life value, a prompt message is issued.

[0188] In this embodiment, taking the working time as the state parameter as an example, it is determined whether the working time reaches the preset life value. When the working time is less than the preset life value, it indicates that the burner 200 corresponding to the working time is in a normal state, and power can be allocated and corresponding combustion work can be performed according to the above steps; when the working time is greater than or equal to the preset life value, it indicates that the burner 200 corresponding to the working time is in a fatigue state, or there is a safety hazard. The control device can issue a prompt message to prompt relevant personnel to inspect or replace the burner 200 to ensure that the combustion work of the entire multi-burner 1 is safe and efficient.

[0189] Also, see Figure 7 In the seventh embodiment of the gas water heater control method provided by the present invention, before the step S100: obtaining the power demand of the multi-combustion engine 1, it also includes:

[0190] Step S010: obtaining the water inlet flow value of the gas water heater;

[0191] Step S020: When the water inlet flow value reaches a preset flow value, the step of obtaining the power demand value of the multi-combustion engine 1 is executed.

[0192] It can be understood that the above operation can be used to determine whether the user currently needs water. The hot gas water heater is provided with a water flow sensor 410 at the water inlet pipe 2. The water flow sensor 410 can be used to sense the flow of water at the water inlet pipe 2. Due to the abnormality of the valve body near the water inlet pipe 2, or when the gas water heater is in a certain working mode, a small amount of water will flow at the water inlet pipe 2. In order to avoid the water flow sensor 410 from misjudging whether the user currently needs water, in this embodiment, when the water flow sensor 410 senses the water inlet flow value, the water inlet flow value is first compared with the preset flow value. When the water inlet flow value is less than the preset flow value, it indicates that the current water flow cannot reach the user's normal water consumption, and the user does not need water at present; on the contrary, when the water inlet flow value is greater than or equal to the preset flow value, it indicates that the current water flow can reach the user's normal water consumption, and the user currently needs water.

[0193] In one embodiment, based on the above-mentioned acquisition of the water inlet flow value, the current working mode of the gas water heater can be further obtained. The water demand of different working modes is different. The control device can pre-establish a one-to-one mapping association between each working mode and different preset flow values, so that when the water inlet flow value reaches the preset flow value of the corresponding working mode, the step of obtaining the power demand value of the multi-burner 1 is executed.

[0194] Of course, when the water inlet flow value reaches the preset flow value, it can be further determined whether the duration of the water inlet flow value reaching the preset flow value meets the preset conditions. When the duration of the water inlet flow value reaching the preset flow value meets the preset conditions, it means that the current user needs to use water.

[0195] Also, see Figure 8 In the eighth embodiment of the gas water heater control method provided by the present invention, the step S100: obtaining the power demand value of the multi-combustion machine 1 includes:

[0196] Step S110: obtaining the water inlet volume, water inlet temperature and user set temperature of the gas water heater;

[0197] Step S120: Calculate the power demand value of the multi-combustion engine 1 according to the water inlet volume, the water inlet temperature and the user-set temperature.

[0198] In this embodiment, when the water flow sensor 410 has become stable as in the second embodiment, the water flow measured by the water flow sensor 410 is close to the accurate water inflow; the first temperature sensor 420 provided in the water inlet pipe 2 senses the water inlet temperature; the control device obtains the user-set temperature through a user's manual input signal, or the control device obtains the user-set temperature by obtaining the temperature data associated with the current working mode. It should be noted that the temperature data associated with the working mode can be the factory default of the gas water heater or the pre-set confirmation of the user, which will not be described in detail here.

[0199] When the water inlet volume, water inlet temperature and user-set temperature are known, the control device can calculate the difference between the water inlet temperature and the user-set temperature, or the required temperature rise; by calculating the product of the required temperature rise and the water inlet volume, the heat load value required to heat the water inlet volume, that is, the power requirement value for heating the water inlet volume, can be obtained.

[0200] Also, see Fig. 9 In the ninth embodiment of the gas water heater control method provided by the present invention, the step S310: determining the power allocation value of each burner 200 according to the power demand value comprises:

[0201] Step S311: according to the power demand value P0, determining the working number N of the burners 200 that meets the power demand value P0;

[0202] Step S312: If the determined working number N of the burner 200 is 1, select one of the burners 200 to work according to a preset rule, and determine the power allocation value of the working burner 200 to be the power demand value P0.

[0203] In this embodiment, when the power requirement value P0 is known, the working number N of the burners 200 that meet the power requirement value P0 is first determined. Specifically, the burners 200 involved in the work must first ensure that they can work normally. Among the multiple burners 200 that can work normally, the working power of each burner 200 is determined, and the working power is, for example, the rated power; the working powers of the multiple burners 200 can be set the same, or at least partially different. Among them, when the working powers of the multiple burners 200 are the same, the power requirement value is divided by the working power of each burner 200 to obtain the working number N of the burners 200 that meet the power requirement value P0; when the working powers of the multiple burners 200 are at least partially different, the working priorities of the multiple burners 200 can be determined according to the preset rules, and the preset rules, for example, adopt the principle of the minimum number of burners 200 to start, adopt the principle of the minimum combustion energy consumption of the burners 200, etc., and finally determine the working number N of the burners 200 that meet the power requirement value P0 in an orderly manner.

[0204] In one embodiment, when the number of jobs N=1, that is, the power demand value P0 is less than or equal to the working power of the burner 200, the burner 200 is directly started and the working power of the burner 200 is adjusted to meet the power demand value P0. At this time, the power demand value P0 is the power allocation value of the burner 200.

[0205] Based on the above embodiments, please refer to Fig.10 In the tenth embodiment of the gas water heater control method provided by the present invention, after the step S311: determining the working number N of the burner 200 that meets the power demand value P0 according to the power demand value P0, it also includes:

[0206] Step S313: if the working number N>1, select N burners 200 to work according to a preset rule;

[0207] Step S314: Determine that among the N burners 200 in operation, the power allocation values ​​of N-1 of the burners 200 are the set power value P1, and the power allocation value of the remaining burner 200 is P0-(N-1)*P1.

[0208] In view of the above, when the number N of burners 200 that meet the power requirement value P0 is determined and it is determined that N>1:

[0209] In one embodiment, the power demand value P0 can be evenly distributed to all burners 200 or distributed in order according to preset rules, so that all burners 200 participate in the work; alternatively, N burners 200 can be purposefully selected from multiple burners 200, and the power demand value P0 can be evenly distributed to multiple N burners 200.

[0210] In this embodiment, after N burners 200 are purposefully selected from a plurality of burners 200, the allocation order of the N burners 200 can be determined randomly or according to a preset rule. Next, N-1 burners 200 are configured to work according to the set power value P1, and the set power value P1 is also the rated power or maximum power mentioned above; when the N-1 burners 200 all work according to the set power value P1, the remaining P0-(N-1)*P1 power value is allocated to the remaining burner 200 to ensure that the N burners 200 burn stably.

[0211] Next, see Fig.11 In the eleventh embodiment of the gas water heater control method provided by the present invention, the multi-combustion machine 1 further includes a regulating valve 300 corresponding to each of the plurality of burners 200, and the regulating valve 300 is used to adjust the mixed gas intake amount of the corresponding burner 200;

[0212] The step S400: controlling each of the burners 200 to operate according to the corresponding power allocation value comprises:

[0213] Step S410: determining the mixed gas distribution amount of each of the burners 200 according to the power distribution value of each of the burners 200;

[0214] Step S420: According to the mixed gas distribution amount of each of the burners 200 , the corresponding regulating valve 300 is controlled to operate so as to provide each of the burners 200 with the corresponding mixed gas distribution amount.

[0215] In view of the above, it can be known that after each burner 200 determines its own power distribution value, in order for each burner 200 to burn according to the corresponding power distribution value, it is necessary to provide the required mixed gas intake amount for each burner 200. Therefore, in this embodiment, based on the determined power distribution value, the mixed gas distribution amount of the corresponding burner 200 can be calculated according to the existing technology, that is, the mixed gas amount required when the corresponding burner 200 works according to the power distribution value.

[0216] The regulating valve 300 is disposed on the connecting pipeline 510 between the premixer 100 and each burner 200 . By adjusting the opening of the regulating valve 300 , the intake amount of the mixed gas from the premixer 100 into the combustion chamber can be correspondingly adjusted.

[0217] Also, see Fig.12 In the twelfth embodiment of the gas water heater control method provided by the present invention, in view of the above, the multi-burner 1 further includes a premixer 100, the premixer 100 is used to receive gas and air and premix them to provide mixed gas for the multiple burners 200, and the premixer 100 includes a fan 120 and a gas proportional valve 130;

[0218] After the step S100: obtaining the power demand value of the multi-combustion engine 1, the following steps are further included:

[0219] Step S321: determining the total amount of mixed gas required by the multi-combustion engine 1 according to the power demand value;

[0220] Step S322: Control the fan 120 and the gas proportional valve 130 to operate according to the total amount of the mixed gas demand.

[0221] In this embodiment, the total amount of mixed gas demand can be calculated according to the power demand value, or the total amount of mixed gas demand can be calculated according to each mixed gas distribution amount corresponding to each burner 200. When the total amount of mixed gas demand is known, the total amount of gas and the total amount of air in the total amount of mixed gas demand can be determined, so that the total amount of gas in the total amount of mixed gas demand can be adjusted by controlling the operation of the gas proportional valve 130, and the total amount of air in the total amount of mixed gas demand and the flow rate of the mixed gas can be adjusted by controlling the operation of the fan 120. The specific adjustment method is a mature technology and will not be described in detail here.

[0222] Also, see Fig.13 In the thirteenth embodiment of the gas water heater control method provided by the present invention, after the step S400: controlling each of the burners 200 to work according to the corresponding power allocation value, the method further includes:

[0223] Step S510: obtaining the actual outlet water temperature of the gas water heater and the user set temperature;

[0224] Step S520: Calculating a deviation value between the actual outlet water temperature and the user set temperature according to the actual outlet water temperature and the user set temperature;

[0225] Step S530: when the deviation value exceeds a preset deviation value, calculating the deviation power;

[0226] Step S540: Control at least one of the burners 200 to operate according to the deviation power.

[0227] In this embodiment, the second temperature sensor 430 is arranged at the outlet pipe 3 of the gas water heater to sense the actual outlet water temperature of the water body after heat exchange. Under normal circumstances, the actual outlet water temperature is equivalent to the user-set temperature; when the actual outlet water temperature is different from the user-set temperature, the deviation value between the actual outlet water temperature and the user-set temperature can be calculated, and then the deviation value is judged. When the deviation value is less than the preset deviation value, it indicates that the deviation between the actual outlet water temperature and the user-set temperature is within the normal range, which is an allowable error and can be temporarily ignored. The burner 200 is set to continue working according to the pre-set scheme; when the deviation value is greater than or equal to the preset deviation value, it indicates that the deviation between the actual outlet water temperature and the user-set temperature is large, and some components in the current multi-combustion machine 1 may be abnormal, which needs to be checked in time; or the combustion scheme of the current multi-combustion machine 1 is improper and needs to be adjusted in time.

[0228] Specifically, if the actual water outlet temperature is much higher than the user-set temperature, it can be determined that the actual combustion power in the current combustion scheme of the multi-burner 1 is large and needs to be appropriately reduced; conversely, if the actual water outlet temperature is much lower than the user-set temperature, it can be determined that the actual combustion power in the current combustion scheme of the multi-burner 1 is small and needs to be appropriately increased.

[0229] In addition, in one embodiment, each burner 200 is configured with a set of first temperature sensors 420, second temperature sensors 430 and water flow sensors 410, and the deviation values ​​between the actual water outlet temperature corresponding to each burner 200 and the user-set temperature can be compared one by one. When any of the deviation values ​​exceeds the preset value, the location of the abnormal burner 200 can be determined, that is, the abnormal burner 200 can be adjusted or repaired.

[0230] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A gas water heater control method, characterized in that: The gas water heater comprises a multi-combustion machine, and the multi-combustion machine comprises a plurality of burners; the burner comprises a shell, a preheating burner and an injector, wherein the shell forms a combustion chamber, and the combustion chamber comprises a first combustion chamber and a second combustion chamber which are connected in sequence, and the first combustion chamber is used to receive the mixed gas provided by the premixer; the preheating burner is used to ignite the mixed gas in the first combustion chamber and heat the temperature in the first combustion chamber to a preset temperature; the injector is used to inject gas and / or air into the second combustion chamber, so that a high-temperature air combustion reaction is carried out in the second combustion chamber; The gas water heater control method comprises: Obtain the power demand value of the multi-burner and determine the working order of multiple burners; Determining the power allocation value of each of the burners in turn according to the power demand value and the working order; and Controlling each of the burners to operate according to the corresponding power allocation value; The step of sequentially determining the power allocation value of each of the burners according to the power demand value and the working order comprises: According to the power demand value P0, determining the working number N of the burners that meet the power demand value P0; If the determined working number N of the burners is 1, one of the burners is selected to work according to the working order, and the power allocation value of the working burner is determined to be the power demand value P0; After the step of determining the working number N of the burners that meet the power demand value P0 according to the power demand value P0, the method further includes: If the working number N>1, select N burners to work according to the working order; Among the N burners that are determined to be in operation, the power allocation values ​​of N-1 burners are the set power value P1, and the power allocation value of the remaining burner is P0-(N-1)*P1.

2. The gas water heater control method according to claim 1, characterized in that: The step of determining the working order of the plurality of burners comprises: respectively obtaining the state parameters of each of the burners; The state parameters of the plurality of burners are compared, and the plurality of state parameters are arranged in sequence according to a preset rule, and the arrangement sequence of the plurality of state parameters corresponds to the working sequence of the plurality of burners.

3. The gas water heater control method according to claim 2, characterized in that: The state parameters include working hours; The step of determining the working order of the plurality of burners comprises: respectively obtaining the working time of each of the burners; The working hours of the plurality of burners are compared, and the plurality of working hours are arranged in order from small to large, and the arrangement order of the plurality of working hours corresponds to the working order of the plurality of burners.

4. The gas water heater control method according to claim 2, characterized in that: The state parameters include cumulative power duration; The step of determining the working order of the plurality of burners comprises: respectively obtaining the accumulated power duration of each of the burners; Comparing a plurality of accumulated power durations of the plurality of burners, and arranging the plurality of accumulated power durations in order from small to large, wherein the arrangement order of the plurality of accumulated power durations corresponds to the working order of the plurality of burners; The cumulative power duration satisfies the following relationship: in, is the cumulative power duration of the burner, is the working time of the burner, is the operating power of the burner during this working time.

5. The gas water heater control method according to any one of claims 2 to 4, characterized in that: The step of comparing the state parameters of the plurality of burners and arranging the plurality of state parameters in sequence according to a preset rule, wherein the arrangement sequence of the plurality of state parameters corresponds to the working sequence of the plurality of burners comprises: Comparing a plurality of state parameters of a plurality of the burners, and obtaining a maximum value and a minimum value of the plurality of state parameters; Obtaining a parameter difference between the maximum value of the parameter and the minimum value of the parameter; When the parameter difference reaches a preset difference, the multiple state parameters are arranged in sequence according to a preset rule, and the arrangement order of the multiple state parameters corresponds to the working order of the multiple burners.

6. The gas water heater control method according to claim 2, characterized in that: The state parameters include working time or accumulated power time; After the step of respectively obtaining the state parameters of each of the burners, the method further includes: When the state parameter reaches a preset life value, a prompt message is issued.

7. The gas water heater control method according to claim 1, characterized in that: Before the step of obtaining the power demand value of the multi-combustion burner and determining the working order of the multiple burners, the method further includes: Get the water inlet flow value of the gas water heater; When the water inlet flow value reaches a preset flow value, the step of obtaining the power demand value of the multi-burner is performed.

8. The gas water heater control method according to claim 1, characterized in that: The step of obtaining the power demand value of the multi-combustion engine comprises: Obtain the water inlet volume, water inlet temperature and user-set temperature of the gas water heater; The power demand value of the multi-combustion engine is calculated according to the water inlet volume, the water inlet temperature and the user-set temperature.

9. The gas water heater control method according to claim 1, characterized in that: The multi-combustion machine further comprises a regulating valve arranged in one-to-one correspondence with the plurality of burners, the regulating valve being used to adjust the mixed gas intake amount of the corresponding burner; The step of controlling each of the burners to operate according to the corresponding power allocation value comprises: Determining the mixed gas distribution amount of each of the burners according to the power distribution value of each of the burners; According to the mixed gas distribution amount of each of the burners, the corresponding regulating valve is controlled to operate so as to provide the corresponding mixed gas distribution amount to each of the burners.

10. The gas water heater control method according to claim 1, characterized in that: The multi-combustion machine further comprises a premixer, which is used to receive gas and air and premix them to provide mixed gas for the multiple burners, and the premixer comprises a fan and a gas regulating valve; After the step of obtaining the power demand value of the multi-combustion engine, the method further includes: Determining the total amount of mixed gas required by the multi-combustion engine according to the power demand value; The fan and the gas regulating valve are controlled to operate according to the total amount of the mixed gas demand.

11. The gas water heater control method according to claim 1, characterized in that: After the step of controlling each of the burners to operate according to the corresponding power allocation value, the method further includes: Get the actual water outlet temperature of the gas water heater and the user-set temperature; Calculating a deviation between the actual outlet water temperature and the user set temperature according to the actual outlet water temperature and the user set temperature; When the deviation value exceeds a preset deviation value, calculating the deviation power; At least one of the burners is controlled to operate according to the deviation power.

12. A gas water heater, characterized in that: include: A main body, the main body comprising a multi-combustion machine, the multi-combustion machine comprising a plurality of burners; and A control device, the control device is used to control the operation of the main body, the control device includes a memory, a processor and a gas water heater control program stored in the memory and executable on the processor, the gas water heater control program is configured to implement the steps of the gas water heater control method as described in any one of claims 1 to 11.

13. A storage medium, characterized in that: The storage medium stores a gas water heater control program, and when the gas water heater control program is executed by the processor, the steps of the gas water heater control method according to any one of claims 1 to 11 are implemented.

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