CN114992865B - Gas water heater and control method and storage medium thereof - Google Patents
Gas water heater and control method and storage medium thereof Download PDFInfo
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- CN114992865B CN114992865B CN202110199860.2A CN202110199860A CN114992865B CN 114992865 B CN114992865 B CN 114992865B CN 202110199860 A CN202110199860 A CN 202110199860A CN 114992865 B CN114992865 B CN 114992865B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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Abstract
本发明公开一种燃气热水器及其控制方法、存储介质，燃气热水器控制方法包括：获取多联燃烧机的功率需求值；根据功率需求值，确定每一燃烧器的功率分配值；控制每一燃烧器按照对应的功率分配值工作。本发明中，当多联燃烧机的总体的功率需求值已知，按照设定规则可确定出每一燃烧器的功率分配值，从而可以控制每一燃烧器按照对应的功率分配值进行燃烧工作。本发明提供的燃气热水器控制方法，能够满足燃气热水器的多种功率需求，且提供丰富的燃烧器工作方案，有助于提高燃气热水器的实用性及灵活性。
The present invention discloses a gas water heater and a control method and storage medium thereof. The gas water heater control method comprises: obtaining the power demand value of a multi-burner; determining the power allocation value of each burner according to the power demand value; and controlling each burner to work according to the corresponding power allocation value. In the present invention, when the overall power demand value of the multi-burner is known, the power allocation value of each burner can be determined according to the set rules, so that each burner can be controlled to perform combustion 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 and provide a variety of burner working schemes, which helps to improve the practicality and flexibility of the gas water heater.
Description
Technical Field
The invention relates to the technical field of water heater control, in particular to a gas water heater, a control method thereof and a storage medium.
Background
The existing gas water heater is generally provided with a burner, and heat is generated by burning the burner, so that the purpose of heat exchange of tap water is achieved. However, the combustion power of the existing gas water heater is generally single and fixed, so that the application of the gas water heater is limited.
Disclosure of Invention
The invention mainly aims to provide a gas water heater, a control method thereof and a storage medium, and aims to solve the problem of single combustion power of the traditional gas water heater.
In order to achieve the above purpose, the present invention provides a control method for a gas water heater, where the gas water heater includes a multi-connected burner, and the multi-connected burner includes a plurality of burners; the control method of the gas water heater comprises the following steps:
acquiring a power demand value of the multi-connected combustor;
determining a power distribution value for each of the burners based on the power demand values; and
And controlling each combustor to work according to the corresponding power distribution value.
In an embodiment, before the step of obtaining the power demand value of the multiple burner, the method further includes:
Acquiring the water inflow value of the gas water heater;
And when the inflow water flow value reaches a preset flow value, executing the step of acquiring the power demand value of the multi-connected combustor.
In one embodiment, the step of obtaining the power demand value of the multiple burner engine comprises:
acquiring water inflow and water inflow temperature of the gas water heater and setting the temperature by a user;
and calculating the power demand value of the multi-connected combustor according to the water inflow, the water inflow temperature and the user set temperature.
In an embodiment, the step of determining a power distribution value for each of the burners according to the power demand values comprises:
Determining the working number N of the combustors meeting the power demand value P0 according to the power demand value P0;
and if the determined working quantity N=1 of the burners, selecting one burner to work according to a preset rule, and determining the power distribution value of the working burner as the power requirement value P0.
In an embodiment, after the step of determining the number of burners N satisfying the power demand value P0 according to the power demand value P0, the method further includes:
if the working quantity N is more than 1, selecting N burners to work according to a preset rule;
And determining that the power distribution value of N-1 burners in N operating burners is a set power value P1, and the power distribution value of the rest burners is P0- (N-1) P1.
In one embodiment, the multiple-burner engine further comprises adjusting valves which are arranged in one-to-one correspondence with the plurality of burners, and the adjusting valves are used for adjusting the air inflow of the mixed gas of the corresponding burners;
The step of controlling each of the burners to operate according to the corresponding power distribution value includes:
determining a mixed gas distribution amount of each burner according to the power distribution value of each burner;
And controlling the corresponding regulating valve to work according to the mixed gas distribution amount of each burner so as to provide the mixed gas distribution amount corresponding to each burner.
In an embodiment, the multi-burner further comprises a premixer for introducing gas and air and premixing to provide mixed gas for a plurality of the burners, the premixer comprising a fan and a gas proportional valve;
After the step of obtaining the power demand value of the multi-connected combustor, the method further comprises the following steps:
determining the total mixed gas demand of the multi-connected combustors according to the power demand value;
And controlling the fan and the gas proportional valve to work according to the total amount of the mixed gas demand.
In an embodiment, after the step of controlling each of the burners to operate according to the corresponding power distribution value, the method further includes:
acquiring the actual water outlet temperature of the gas water heater and setting the temperature by a user;
calculating a deviation value of the actual water outlet temperature and the user set temperature according to the actual water outlet temperature and the user set temperature;
Calculating deviation power when the deviation value exceeds a preset deviation value;
and controlling at least one burner to work according to the deviation power.
In addition, in order to achieve the above object, the present invention also provides a gas water heater, comprising:
a body comprising a multi-burner, the multi-burner comprising a plurality of burners; and
The control device is used for controlling the main body to work and comprises a memory, a processor and a gas water heater control program which is stored in the memory and can run on the processor, and the gas water heater control program is configured to realize the steps of the gas water heater control method.
In addition, in order to achieve the above object, the present invention also provides a storage medium having stored thereon a gas water heater control program which, when executed by a processor, implements the steps of the gas water heater control method as described above.
In the technical scheme provided by the invention, when the gas water heater performs heat exchange work, the multi-connected combustion machine is required to generate a required heat load, and the heat load is related to a power demand value of the multi-connected combustion machine; when the total power demand value of the multi-connected combustors is known, the power distribution value of each combustor can be determined according to a set rule, so that each combustor can be controlled to perform combustion according to the corresponding power distribution value. The control method of the gas water heater can meet various power requirements of the gas water heater, provides rich burner working schemes, and is beneficial to improving the practicability and flexibility of the gas water heater.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a first embodiment of a control method of a gas water heater according to the present invention;
FIG. 2 is a schematic flow chart of a second embodiment of a control method of a gas water heater according to the present invention;
FIG. 3 is a schematic flow chart of a third embodiment of a control method of a gas water heater according to the present invention;
FIG. 4 is a schematic flow chart of a fourth embodiment of a control method of a gas water heater according to the present invention;
FIG. 5 is a schematic flow chart of a fifth embodiment of a control method of a gas water heater according to the present invention;
FIG. 6 is a schematic flow chart of a sixth embodiment of a control method of a gas water heater according to the present invention;
FIG. 7 is a schematic flow chart of a seventh embodiment of a control method of a gas water heater according to the present invention;
FIG. 8 is a schematic flow chart of an eighth embodiment of a control method of a gas water heater according to the present invention;
FIG. 9 is a schematic view of a multi-burner embodiment of the present invention;
FIG. 10 is an enlarged schematic view of FIG. 9A;
FIG. 11 is a schematic view in longitudinal section of a portion of the burner of FIG. 10;
FIG. 12 is an enlarged schematic view of the structure at B in FIG. 9;
Fig. 13 is a schematic structural diagram of a control device for a hardware running environment according to an embodiment of the present invention.
Reference numerals illustrate:
| Reference numerals | Name of the name | Reference numerals | Name of the name |
| 1 | Multi-connected burner | 220 | Preheating burner |
| 100 | Premixing device | 230 | Ejector device |
| 110 | Casing of machine | 300 | Regulating valve |
| 111 | Gas channel | 410 | Water flow sensor |
| 112 | Air passage | 420 | First temperature sensor |
| 113 | Mixing channel | 430 | Second temperature sensor |
| 120 | Blower fan | 440 | Inductor |
| 130 | Gas proportional valve | 500 | Pipeline |
| 200 | Burner with a burner body | 510 | Connecting pipeline |
| 210 | Shell body | 2 | Water inlet pipe |
| 211 | First combustion chamber | 3 | Water outlet pipe |
| 212 | Second combustion chamber | 4 | Exhaust pipe |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The existing gas water heater is generally provided with a burner, and heat is generated by burning the burner, so that the purpose of heat exchange of tap water is achieved. However, the combustion power of the existing gas water heater is generally single and fixed, so that the application of the gas water heater is limited.
In view of the above, the present invention provides a gas water heater comprising a main body including a multi-burner comprising a plurality of burners, and a control device; the control device is used for controlling the main body to work.
Referring to fig. 9 to 12, the drawings show an embodiment of a multi-split burner provided by the present invention.
The multi-connected combustor 1 provided by the invention comprises a premixer 100 and a plurality of combustors 200, wherein the premixer 100 is used for introducing fuel gas and air and premixing; the burner 200 is formed with a combustion chamber; the combustion chambers of the plurality of combustors 200 are respectively communicated with the premixer 100, and the combustion chamber of at least one multi-connected combustor 1 is used for connecting the mixed gas provided by the premixer 100 and igniting the mixed gas for combustion.
In the technical scheme provided by the invention, the premixer 100 pre-mixes fuel gas and air to form mixed gas; the plurality of burners 200 are all connected with the premixer 100, so that the plurality of burners 200 are connected in parallel; the premixer 100 can provide mixed gas required for combustion for each combustor 200, and can enable different combustion powers of the multi-connected combustor 1 by selecting a required number of combustors 200 to synchronously work, thereby obtaining different heat loads and generating different heat exchange effects.
It will be appreciated that the premixer 100 generally includes a casing 110, where the casing 110 is formed with a gas passage 111, an air passage 112, and a mixing passage 113, and the gas inlet of the mixing passage 113 is respectively communicated with the gas passage 111 and the air passage 112, and the gas outlet of the mixing passage 113 is respectively communicated with a plurality of combustion chambers. The gas passage 111 is used for introducing external gas, the air passage 112 is used for introducing external air, and the introduced gas and air are mixed in the mixing passage 113.
The ratio of the fuel gas to the air in the mixed gas premixed by the premixer 100 is set within a proper range to ensure that the burner 200 is sufficiently and efficiently burned in the mixed gas environment.
Based on this, in a further aspect, the premixer 100 may provide a proportional valve at the gas channel 111 and/or the air channel 112, which may be defined as a gas proportional valve 130 for distinction, and an air proportional valve at the air channel 112; by operating the gas proportional valve 130 and/or the air proportional valve, the amount of gas intake and/or the amount of air intake in the premixer 100 can be adjusted, so that a desired proportion of mixed gas can be obtained. In the present embodiment, the gas proportional valve 130 is provided at the gas passage 111, and the gas intake amount can be adjusted correspondingly by adjusting the opening degree of the gas proportional valve 130.
In addition, the premixer 100 may be provided with a fan 120, and the fan 120 may be configured to drive the flow of gas and/or air within the premixer 100 such that the gas flow may enter each combustion chamber in a generally desired direction and at a desired velocity. In a specific application, the fan 120 may be disposed at the air channel 112 to accelerate the circulation of air, and cooperate with the gas proportional valve 130 to realize the respective control of the air intake amount and the gas intake amount; alternatively, the blower 120 may be disposed at the mixing channel 113, so that not only the gas, air and mixed gas can be circulated, but also the gas and air can be dispersed under the turbulence of the rotating blades of the blower 120 to obtain more sufficient mixing.
The premixer 100 and the plurality of combustors 200 are generally communicated through a pipe 500, specifically, an air inlet of the pipe 500 is communicated with an outlet of the mixing channel 113 of the premixer 100, and an air outlet of the pipe 500 is provided in plurality and is respectively communicated with air inlets of a plurality of combustors. The provision of the pipe 500 helps to smooth the flow rate of the mixed gas, and can uniformly distribute the mixed gas outputted from the premixer 100 to the plurality of burners 200.
The number of premixers 100 is not limited in the present design, and may be one or more according to actual needs. Wherein, when the premixer 100 is provided in plurality, each of the premixers 100 of the plurality of premixers 100 is provided in communication with a plurality of combustors 200, i.e., the plurality of combustors 200 are connected in parallel at the mixed gas outlet of each of the premixers 100. The provision of the plurality of premixers 100 can increase the amount of premixing of the mixture gas, and thus can provide the plurality of burners 200 with sufficient mixture gas when the plurality of burners 200 are operated simultaneously.
The burner 200 is used to access the mixed gas provided by the premixer 100, ignite the mixed gas, and stably burn the mixed gas 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 arranged at any positions of the combustion chamber, for example, at two opposite sides of the combustion chamber or at a certain side surface of the combustion chamber at intervals. The flue gas outlet is communicated with a heat exchange chamber of the gas water heater, so that high-temperature flue gas generated by the combustion chamber can exchange heat with tap water, and finally hot water is prepared.
The plurality of burners 200 may be arranged in any suitable manner on the multiple burner 1 to accommodate different shapes, sizes and mounting orientations of the multiple burner 1. In one embodiment, a plurality of burners 200 are arranged in a side-by-side interval along a line. By such arrangement, the arrangement of the above-mentioned pipeline 500 can be simplified and facilitated, and the pipeline can be directly arranged along the arrangement direction of the plurality of combustion chambers.
The burner 200 may be a burner 200 for conventional combustion, which is not described in detail herein; or at least one of the plurality of burners 200 is configured as a burner capable of high temperature air combustion. It can be appreciated that the main characteristics of high temperature air combustion are: the chemical reaction needs to take place in a high temperature, low oxygen environment, where the reactant temperature is above its auto-ignition temperature and the maximum temperature rise during combustion is below its auto-ignition temperature, with the oxygen volume fraction being diluted to an extremely low concentration by the combustion products. Compared with conventional combustion, in the combustion state, pyrolysis of fuel is restrained, flame thickness is thickened, flame front disappears, so that the temperature of the whole hearth is very uniform, combustion peak temperature is low, noise is extremely low, and pollutant NOx and CO emissions are greatly reduced. But certain conditions are required to achieve high temperature air combustion: the oxygen concentration in most areas in the furnace is required to be lower than a certain value, generally lower than 5% -10%, so that the fuel gas is fully combusted and uniformly combusted, and the temperature is higher than the self-ignition point of the fuel, and the self-ignition is maintained.
Specifically, the burner 200 for realizing high-temperature air combustion includes a housing 210, a preheating burner 220, and an injector 230, wherein the housing 210 is formed with the combustion chamber, the combustion chamber includes a first combustion chamber 211 and a second combustion chamber 212 that are sequentially communicated, and the first combustion chamber 211 is used for accessing the mixed gas provided by the premixer 100; the preheating burner 220 is used for igniting the mixed gas in the first combustion chamber 211 and heating the temperature in the first combustion chamber 211 to a preset temperature; the injector 230 is configured to inject fuel gas and/or air into the second combustion chamber 212 such that a high temperature air combustion reaction is performed in the second combustion chamber 212.
The preheating burner 220 is disposed at the first combustion chamber 211, and may be specifically disposed at a 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 a preset high temperature is formed in the region, thereby enabling high temperature preheating to be achieved and forming high temperature smoke.
The injector 230 injects fuel gas and/or air toward the second combustion chamber 212, the fuel gas is ignited by the high temperature gas to be continuously combusted in the second combustion chamber 212 to form an injection combustion area, and the fuel gas and/or air injected according to a preset speed are matched with the high temperature flue gas to form a entrainment effect in the second combustion chamber 212 to form a flue gas backflow area, so that part of the high temperature flue gas (the waste gas rich in N2 and CO 2) circularly dilutes reactants in the second combustion chamber 212, and then the injected fuel gas and air are sufficiently diluted to form a lower oxygen concentration, so that the combustion reaction speed is reduced, the higher temperature in the second combustion chamber 212 is continuously maintained, the temperature in the second combustion chamber 212 is ensured to be higher than the self-ignition point of the fuel, and spontaneous combustion is realized, thereby realizing high temperature air combustion.
The injectors 230 may be disposed at sidewalls of the second combustion chamber 212, and a plurality of injectors 230 may be disposed at intervals along a circumferential direction of the second combustion chamber 212, and the plurality of injectors 230 may be uniformly disposed along each sidewall of the second combustion chamber 212 or may be disposed at opposite sidewalls 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 preheating burner 220.
Further, in an embodiment, the multiple combustor 1 further includes a plurality of adjusting valves 300 disposed in one-to-one correspondence with the plurality of combustors 200, and each adjusting valve 300 is disposed on a connecting pipeline 510 between the premixer 100 and the corresponding combustion chamber, so as to adjust the intake air amount of the mixed gas in the corresponding combustion chamber. The adjusting valve 300 can adjust the opening and closing of the corresponding connecting pipe 510 and circulate the mixed gas at any opening, so as to adjust the intake air amount of the mixed gas in the corresponding combustion chamber, and the intake air amount of the mixed gas in each combustion chamber can be respectively adjusted and controlled.
Based on the above, in an embodiment, the multi-burner 1 further comprises a sensing device and a controller, wherein the sensing device is used for sensing the power requirement value of the multi-burner 1; the controller is electrically connected with the sensing device and the plurality of regulating valves 300 respectively, so as to control at least one regulating valve 300 to work according to the power demand value, so that at least one burner 200 works to meet the power demand value.
The specific scheme of the sensing device is not limited, and in an embodiment, the sensing device may be an input device, and the input device may be, but is not limited to, various buttons, a touch screen, a microphone, etc., that is, a user may manually press, touch a display control structure of the gas water heater, or directly send out a power requirement value required by voice input. When the sensing device is an input device, the sensing device is not limited to the user only inputting the power value, and the user may input any parameter that can be finally converted into the power value according to different application conditions, for example, may input a temperature value, may input an application environment, may input a current season and region, and the like.
Of course, the sensing device may also be a detecting device, specifically, in an embodiment, the sensing device includes a water flow sensor 410 and a first temperature sensor 420, where the water flow sensor 410 is used to sense the water inflow of the gas water heater; the first temperature sensor 420 is used for detecting the water inlet temperature of the gas water heater; the controller is electrically connected with the water flow sensor 410 and the temperature detection component respectively, so as to obtain the power demand value according to the water flow sensor 410, the water inlet temperature and the received user set temperature.
The user set temperature can be directly obtained through communication connection with a 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 moved, the product of the temperature rise and the current water flow is converted, and the required heat load corresponding to the required temperature rise can be obtained.
Further, in an embodiment, the sensing device further includes a second temperature sensor 430, and the second temperature sensor 430 is used for sensing the actual water outlet temperature of the gas water heater; the controller is electrically connected to the second temperature sensor 430, so as to control the operation of the regulating valve 300 according to the deviation between the actual water outlet temperature and the user-set temperature.
It can be appreciated that the second temperature sensor 430 can detect the actual outlet water temperature value of the hot water obtained after the operation of the at least one burner 200, and in general, the actual outlet water temperature should be approximately the same as the user set temperature, and the deviation between the two should not exceed the preset deviation, at this time, the previous setting is not required to be changed, and the control valve 300 is controlled to continue to operate according to the previous setting; when a larger deviation occurs between the actual water outlet temperature and the user set temperature, for example, when the deviation exceeds the preset deviation, that is, the previous setting is problematic, the working scheme of the regulating valve 300 needs to be adjusted, for example, when the actual water outlet temperature is far smaller than the user set temperature, the opening degree of at least one regulating valve 300 can be appropriately increased, and more mixed gas is provided for the corresponding combustion chamber so as to increase the combustion power of the combustor 200; conversely, when the actual water outlet temperature is far greater than the user set temperature, the opening of the at least one adjusting valve 300 can be properly reduced to provide less mixed gas for the corresponding combustion, so as to reduce the combustion power of the burner 200.
In addition, when a large deviation occurs between the actual outlet water temperature and the user set temperature, it can also indicate that some components in the multiple combustion engine 1, such as a certain regulating valve 300, a certain preheating burner 220 or a certain injector 230, are abnormal, so that timely investigation can be performed.
In order to accurately obtain whether the user needs water currently, that is, to determine whether the multi-burner 1 needs to work currently, in an embodiment, the multi-burner 1 further includes an inductor 440, and the inductor 440 is used for triggering a water signal when sensing that the gas water heater is used; the controller is electrically connected to the sensor 440 to control the operation of the sensing device when the water signal is received.
The sensor 440 may be an input device for a user to directly input a confirmation of the need for water; alternatively, the sensor 440 may 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 performs the setting operation in the setting area. The setting operation of the setting area may be, but is not limited to: the water outlet is closed in a kitchen sink, dirty bowls are placed in the kitchen sink, or clothes are removed in a bathroom, and the like.
Of course, the sensor 440 may also directly employ the water flow sensor 410 mentioned above. When the current water flow rate is detected by the water flow rate sensor 410 to reach the set flow rate value, the current water demand is characterized, the sensing operation of the sensing device and the controller can be triggered, and the specific water flow rate can be detected after the water flow rate is stable.
It should be noted that, the water flow sensor 410, the first temperature sensor 420, and the second temperature sensor 430 may be set as a group, or may be set as a plurality corresponding to the plurality of combustors 200, so as to respectively sense the parameters of each combustor 200, thereby realizing flexible sensing control of each combustor 200.
Since the plurality of burners 200 operate at different powers, different amounts of mixed gas intake are required. Therefore, in an embodiment, when the multiple burner 1 includes the sensing device and the controller as described above, the controller may be configured 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 operate according to the power requirement value.
Specifically, for example, when the power requirement is larger, so that more combustors 200 need to be started and operated simultaneously, more premixing of fuel gas and air can be achieved by adjusting the opening of the fuel gas proportional valve 130 to be increased and the rotation speed of the fan 120 to be increased; conversely, when the power requirement is smaller, so that fewer combustors 200 need to be started and operated simultaneously, the premixing of the fuel gas and the air can be reduced by adjusting the opening of the fuel gas proportional valve 130 to be reduced and the rotation speed of the fan 120 to be slowed down.
The plurality of burners 200 may be in communication with the same exhaust pipe 4, the same inlet pipe 2 and the same outlet pipe 3. The first temperature sensor 420 and the water flow sensor 410 are provided on the water inlet pipe 2, and the second temperature sensor 430 is provided on the water outlet pipe 3.
Referring to fig. 13, fig. 13 is a schematic structural diagram of a control device for a hardware running environment according to an embodiment of the present invention. It should be noted that the control device may directly constitute the controller in the multiple combustion engine 1, or be electrically connected to the controller, so as to implement signal communication between the control device and the controller.
As shown in fig. 13, 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. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display, an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
It will be appreciated by those skilled in the art that the configuration shown in fig. 13 is not limiting of the control device and may include more or fewer components than shown, or may be combined with certain components, or may be arranged with different components.
As shown in fig. 13, an operating system, a network communication module, a user interface module, and a gas water heater control program may be included in a memory 1005 as one type of computer storage medium.
The control device shown in fig. 13 calls the gas water heater control program stored in the memory 1005 through the processor 1001, and performs the following operations:
the gas water heater comprises a multi-burner 1, wherein the multi-burner 1 comprises a plurality of burners 200; the control method of the gas water heater comprises the following steps:
acquiring a power demand value of the multi-connected combustor 1;
Determining a power distribution value for each of the burners 200 based on the power demand values; and
Each of the burners 200 is controlled to operate according to the corresponding power distribution value.
Further, the processor 1001 may call a gas water heater control program stored in the memory 1005, and further perform the following operations:
before the step of obtaining the power demand value of the multiple combustor 1, the method further comprises the following steps:
Acquiring the water inflow value of the gas water heater;
And when the inflow water flow value reaches a preset flow value, executing the step of acquiring the power demand value of the multi-connected combustor 1.
Further, the processor 1001 may call a gas water heater control program stored in the memory 1005, and further perform the following operations:
The step of obtaining the power demand value of the multiple combustor 1 includes:
acquiring water inflow and water inflow temperature of the gas water heater and setting the temperature by a user;
And calculating the power demand value of the multi-connected combustor 1 according to the water inflow, the water inflow temperature and the user set temperature.
Further, the processor 1001 may call a gas water heater control program stored in the memory 1005, and further perform the following operations:
The step of determining a power distribution value for each of the burners 200 according to the power demand values includes:
determining, from the power demand value P0, the number of operations N of the burners 200 satisfying the power demand value P0;
If the determined number of operation n=1 of the burners 200, selecting one of the burners 200 to operate according to a preset rule, and determining the power distribution value of the operated burner 200 as the power demand value P0.
Further, the processor 1001 may call a gas water heater control program stored in the memory 1005, and further perform the following operations:
after the step of determining the number N of operations of the burner 200 satisfying the power demand value P0 according to the power demand value P0, it further includes:
if the number of work N is greater than 1, selecting N burners 200 to work according to a preset rule;
Of the N operating burners 200, the power distribution value of N-1 burners 200 is determined to be the set power value P1, and the power distribution value of the remaining burner 200 is determined to be P0- (N-1) P1.
Further, the processor 1001 may call a gas water heater control program stored in the memory 1005, and further perform the following operations:
The multiple burner 1 further comprises a regulating valve 300 which is arranged in a one-to-one correspondence with the plurality of burners 200, wherein the regulating valve 300 is used for regulating the air inflow of the mixed gas of the corresponding burner 200;
The step of controlling each of the burners 200 to operate according to the corresponding power distribution value includes:
determining a mixed gas distribution amount of each of the burners 200 according to the power distribution value of each of the burners 200;
According to the mixed gas distribution amount of each burner 200, the corresponding regulating valve 300 is controlled to operate so as to provide the corresponding mixed gas distribution amount to each burner 200.
Further, the processor 1001 may call a gas water heater control program stored in the memory 1005, and further perform the following operations:
The multi-connected combustor 1 further comprises a premixer 100, wherein the premixer 100 is used for introducing fuel gas and air and premixing the fuel gas and the air to provide mixed gas for a plurality of combustors 200, and the premixer 100 comprises a fan 120 and a fuel gas proportional valve 130;
After the step of obtaining the power demand value of the multiple combustor 1, the method further comprises the following steps:
Determining the total amount of mixed gas demand of the multi-connected combustor 1 according to the power demand value;
and controlling the fan 120 and the fuel gas proportional valve 130 to work according to the total amount of the mixed gas demand.
Further, the processor 1001 may call a gas water heater control program stored in the memory 1005, and further perform the following operations:
after the step of controlling each of the burners 200 to operate according to the corresponding power distribution value, it further includes:
acquiring the actual water outlet temperature of the gas water heater and setting the temperature by a user;
calculating a deviation value of the actual water outlet temperature and the user set temperature according to the actual water outlet temperature and the user set temperature;
Calculating deviation power when the deviation value exceeds a preset deviation value;
at least one of the burners 200 is controlled to operate according to the deviation power.
In addition, based on the gas water heater, the invention also provides a gas water heater control method, referring to fig. 1 to 8, wherein the drawings show a specific embodiment of the gas water heater control method.
Referring to fig. 1, in a first embodiment of a gas water heater control method provided by the present invention, the gas water heater control method includes:
Step S100: acquiring a power demand value of the multi-connected combustor 1;
It can be understood that the gas water heater generates high-temperature flue gas through the operation of the multi-connected burner 1, and exchanges heat with tap water by using the high-temperature flue gas to finally prepare hot water. Thus, the combustion power of the combustion of the multiple burner 1 is related to the heat exchanging effect of the gas water heater. In practical application, the method can be set to directly and manually input the power demand value of the multi-connected combustor 1 or other parameters capable of determining the power demand value by a user; of course, it is also possible to provide that the gas water heater can obtain the power demand value of the multiple burner 1 by sensing by various sensors provided in itself, and the following embodiments can be referred to specifically.
Step S210: determining a power distribution value for each of the burners 200 based on the power demand values;
In this embodiment, the number of the burners 200 and the specific specifications of the multiple burner 1 are known, and when the current power demand value of the user is known, the power demand value may be allocated to the multiple burners 200 according to a preset rule, and the power value allocated to each burner 200 is the power allocation value. It will be appreciated that the specific values of the power split values are not limiting in this design, and that when the power split values are zero, that is, the burner 200 corresponding to the power split values is characterized as not being required to initiate combustion operations; when the power distribution value is greater than zero, the corresponding burner 200 is controlled to operate according to the power distribution value.
Step S300: each of the burners 200 is controlled to operate according to the corresponding power distribution value.
In this embodiment, when each burner 200 receives its own corresponding power distribution value, the corresponding power distribution value may be converted into a combustion parameter related to combustion, for example, a flow rate of the mixed gas, an air-fuel ratio in the mixed gas, and the like. Each burner 200 operates according to a corresponding power distribution value, wherein when the power distribution value is equal to zero, the corresponding burner 200 may be set to remain in a closed or standby state, or the corresponding burner 200 is turned on, but the mixed gas required for combustion cannot be accessed, the ignition device required for ignition cannot be started, etc.; when the power distribution value is greater than zero, the corresponding burner 200 is started, and can be directly connected with the required mixed gas, and the ignition operation is performed in time to start combustion.
In the technical scheme provided by the invention, when the gas water heater performs heat exchange work, the multi-connected combustor 1 is required to generate a required heat load, and the heat load is related to the power requirement value of the multi-connected combustor 1; when the overall power demand value of the multiple burner machine 1 is known, the power distribution value of each burner 200 can be determined according to a set rule, so that each burner 200 can be controlled to perform combustion operation according to the corresponding power distribution value. The control method of the gas water heater can meet various power requirements of the gas water heater, provides rich working schemes of the burner 200, and is beneficial to improving the practicability and flexibility of the gas water heater.
In addition, referring to fig. 2, in a second embodiment of the control method of the gas water heater provided by the present invention, in the step S100: before obtaining the power demand of the multiple burner 1, it further comprises:
Step S010: acquiring the water inflow value of the gas water heater;
Step S020: and when the inflow water flow value reaches a preset flow value, executing the step of acquiring the power demand value of the multi-connected combustor 1.
It will be appreciated that the above operations may be used to determine whether the user is currently in need of water. The hot gas water heater is provided with a water flow sensor 410 at the water inlet pipe 2, wherein the water flow sensor 410 can be used for sensing the circulation condition of water at the water inlet pipe 2, and a small amount of water body can flow at the water inlet pipe 2 due to the abnormal valve body near the water inlet pipe 2 or when the gas water heater is in a certain working mode. In order to avoid misjudgment of whether the water flow sensor 410 needs water currently, in this embodiment, when the water flow sensor 410 senses to obtain the water inlet flow value, the water inlet flow value is firstly compared with a preset flow value to judge, and when the water inlet flow value is smaller than the preset flow value, the water inlet flow value indicates that the current water flow cannot reach the normal water consumption of the user, and the user does not need water currently; otherwise, when the water inflow value is larger than or equal to the preset flow value, the current water flow is represented to reach the normal water use flow of the user, and the user needs water at present.
In an embodiment, on the basis of the obtained inflow rate value, the current working mode of the gas water heater may be further obtained, the water requirements of different working modes are different, and the control device may pre-establish a one-to-one mapping association between each working mode and different preset flow rates, so that when the inflow rate value reaches the preset flow rate value of the corresponding working mode, the step of obtaining the power requirement value of the multiple combustor 1 is performed.
Of course, when the inflow value reaches the preset flow value, whether the duration time when the inflow value reaches the preset flow value meets the preset condition or not can be further judged, and when the duration time when the inflow value reaches the preset flow value meets the preset condition, the current user needs water is represented.
In addition, referring to fig. 3, in a third embodiment of the control method of a gas water heater provided by the present invention, the step S100 is as follows: the acquisition of the power demand value of the multiple burner 1 comprises:
step S110: acquiring water inflow and water inflow temperature of the gas water heater and setting the temperature by a user;
Step S120: and calculating the power demand value of the multi-connected combustor 1 according to the water inflow, the water inflow temperature and the user set temperature.
In this embodiment, when the water flow sensor 410 has stabilized as in the second embodiment, the water flow measured by the water flow sensor 410 is the water inflow close to the accuracy; the first temperature sensor 420 arranged on the water inlet pipe 2 senses and obtains the water inlet temperature; the control device obtains the user set temperature through a manual input signal of a user, or obtains the user set temperature through obtaining temperature data associated with the current working mode. It should be noted that, the temperature data associated with the operation mode may be factory default of the gas water heater or preset by a user, which will not be described in detail herein.
When the water inflow, the water inflow temperature and the user set temperature are known, the control device can calculate the difference between the water inflow temperature and the user set temperature or needs to increase the temperature; the product of the required temperature rise and the water inflow is calculated, and the heat load value required for heating the water inflow, namely the power required value for heating the water inflow, can be obtained.
In addition, referring to fig. 4, in a fourth embodiment of the control method of a gas water heater provided by the present invention, the step S210: determining a power distribution value for each of the burners 200 based on the power demand values includes:
Step S211: determining, from the power demand value P0, the number of operations N of the burners 200 satisfying the power demand value P0;
Step S212: if the determined number of operation n=1 of the burners 200, selecting one of the burners 200 to operate according to a preset rule, and determining the power distribution value of the operated burner 200 as the power demand value P0.
In the present embodiment, when the power demand value P0 is known, the number of operations N of the burner 200 that satisfies the power demand value P0 is first determined. Specifically, the operating burners 200 first ensure that the operating burners 200 are able to operate properly, and the operating power of each burner 200, for example, the rated power, is determined among the plurality of operating burners 200 that are able to operate properly; the operating power of the plurality of burners 200 may be the same or may be at least partially different. Wherein, when the operating powers of the plurality of burners 200 are the same, dividing the power demand value by the operating power of each burner 200, the number of burners 200 operating N satisfying the power demand value P0 is obtained; when the operating powers of the plurality of burners 200 are at least partially different, the operating priorities of the plurality of burners 200 may be determined according to a preset rule, for example, a minimum starting-up number of the burners 200, a minimum combustion energy consumption of the burners 200, etc., and finally, the operating number N of the burners 200 satisfying the power demand value P0 is sequentially and orderly determined.
In an embodiment, when the working number n=1, that is, the power requirement 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 requirement value P0, where the power requirement value P0 is the power distribution value of the burner 200.
Based on the above embodiments, referring to fig. 5, in a fifth embodiment of the control method of a gas water heater provided by the present invention, step S211 is as follows: after determining the number of operations N of the burner 200 satisfying the power demand value P0 according to the power demand value P0, it further includes:
step S213: if the number of work N is greater than 1, selecting N burners 200 to work according to a preset rule;
step S214: of the N operating burners 200, the power distribution value of N-1 burners 200 is determined to be the set power value P1, and the power distribution value of the remaining burner 200 is determined to be P0- (N-1) P1.
In view of the above, when the number N of operations of the burner 200 satisfying the power demand value P0 is determined, and it is judged that N > 1:
In an embodiment, the power demand value P0 may be evenly distributed to all the burners 200, or orderly distributed according to a preset rule, such that all the burners 200 are involved in the operation; alternatively, N burners 200 may be purposefully selected from the plurality of burners 200 and the power demand P0 may be equally distributed among the plurality of N burners 200.
In the present embodiment, however, after the N burners 200 are purposefully selected from the plurality of burners 200, the allocation order of the N burners 200 may be determined randomly or according to a predetermined rule. Next, the N-1 burners 200 are arranged to operate at a set power value P1, i.e., the rated power or the maximum power described above as the set power value P1; when the N-1 burners 200 all operate according to the set power value P1, the remaining P0- (N-1) P1 power values are assigned to leave one burner 200, so as to ensure stable combustion of the N burners 200.
Next, referring to fig. 6, in a sixth embodiment of the control method of a gas water heater provided by the present invention, the multiple burner 1 further includes a regulating valve 300 disposed in one-to-one correspondence with the plurality of burners 200, and the regulating valve 300 is used for regulating the intake air amount of the mixed gas of the corresponding burner 200;
The step S300: controlling each of the burners 200 to operate according to the corresponding power distribution value includes:
Step S310: determining a mixed gas distribution amount of each of the burners 200 according to the power distribution value of each of the burners 200;
Step S320: according to the mixed gas distribution amount of each burner 200, the corresponding regulating valve 300 is controlled to operate so as to provide the corresponding mixed gas distribution amount to each burner 200.
In view of the above, after each burner 200 determines its own power distribution value, in order to enable each burner 200 to burn according to the corresponding power distribution value, it is necessary to provide each burner 200 with a required mixed gas intake amount, so in this embodiment, according to the determined power distribution value, the mixed gas distribution amount of the corresponding burner 200, that is, the mixed gas amount required when the corresponding burner 200 operates according to the power distribution value, can be calculated according to the prior art.
The adjusting valve 300 is provided on the connection line 510 between the premixer 100 and each burner 200, and the amount of intake air of the mixture gas from the premixer 100 into the combustion chamber can be adjusted correspondingly by adjusting the opening degree of the adjusting valve 300.
In addition, referring to fig. 7, in a seventh embodiment of the control method of the gas water heater provided by the present invention, in view of the foregoing, the multi-burner 1 further includes a premixer 100, the premixer 100 is used for introducing gas and air and premixing to provide mixed gas for a plurality of the burners 200, and the premixer 100 includes a fan 120 and a gas proportional valve 130;
The step S100: after obtaining the power demand value of the multiple combustor 1, the method further comprises:
Step S221: determining the total amount of mixed gas demand of the multi-connected combustor 1 according to the power demand value;
step S222: and controlling the fan 120 and the fuel gas proportional valve 130 to work according to the total amount of the mixed gas demand.
In the present embodiment, the total amount of the mixed gas demand may be calculated correspondingly according to the power demand value, or the total amount of the mixed gas demand may be calculated correspondingly according to each of the mixed gas distribution amounts corresponding to each of the burners 200. When the total amount of the mixed gas demand is known, the total amount of the gas and the total amount of the air in the total amount of the mixed gas demand can be determined, so that the total amount of the gas in the total amount of the mixed gas demand can be adjusted by controlling the operation of the gas proportional valve 130, and the total amount of the air in the total amount of the mixed gas demand and the flow rate of the mixed gas can be adjusted by controlling the operation of the blower 120. The specific manner of regulation is well established and will not be described in detail herein.
In addition, referring to fig. 8, in an eighth embodiment of the control method of a gas water heater, the step S300 is: after controlling each of the burners 200 to operate according to the corresponding power distribution value, further comprising:
step S410: acquiring the actual water outlet temperature of the gas water heater and setting the temperature by a user;
Step S420: calculating a deviation value of the actual water outlet temperature and the user set temperature according to the actual water outlet temperature and the user set temperature;
step S430: calculating deviation power when the deviation value exceeds a preset deviation value;
step S440: at least one of the burners 200 is controlled to operate according to the deviation power.
In this embodiment, the second temperature sensor 430 is disposed at the outlet pipe 3 of the gas water heater, and is used for sensing the actual outlet water temperature of the water body after heat exchange. Under normal conditions, the actual water outlet temperature is equivalent to the user set temperature; when the actual water outlet temperature is different from the user set temperature, a deviation value between the actual water outlet temperature and the user set temperature can be calculated, then the deviation value is judged, and when the deviation value is smaller than a preset deviation value, namely the deviation between the actual water outlet temperature and the user set temperature is represented to be in a normal range, and the deviation is allowed error and can be ignored temporarily, and the set burner 200 still works continuously according to the preset scheme; when the deviation value is larger than or equal to a preset deviation value, namely, the deviation between the actual water outlet temperature and the user set temperature is larger, partial components in the current multi-connected combustor 1 may work abnormally, and timely investigation is needed; or the current multiple burner 1 has an improper burning scheme and needs to be adjusted in time.
Specifically, if the actual water outlet temperature is far greater than the user set temperature, it can be determined that the actual combustion power in the combustion scheme of the current multi-connected combustor 1 is greater, and proper adjustment is required; on the contrary, if the actual outlet water temperature is far smaller than the user set temperature, it can be determined that the actual combustion power in the combustion scheme of the current multi-connected combustor 1 is smaller, and proper adjustment is needed.
In addition, in an embodiment, each burner 200 is configured with a set of first temperature sensor 420, second temperature sensor 430 and water flow sensor 410, and the deviation value between the actual outlet water temperature corresponding to each burner 200 and the user set temperature can be compared one by one, and when any deviation value exceeds the preset value, the position of the abnormal burner 200 can be determined, i.e. the abnormal burner 200 can be adjusted or overhauled.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (8)
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| CN1607363A (en) * | 2003-10-15 | 2005-04-20 | 中山华帝燃具股份有限公司 | Domestic gas instantaneous water heater capable of realizing gas-air proportional control |
| CN201173591Y (en) * | 2008-01-22 | 2008-12-31 | 默洛尼卫生洁具(中国)有限公司 | Heating system with multi- power automatic select function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HU185530B (en) * | 1982-05-18 | 1985-02-28 | Koezponti Valto Hitelbank | Gas- or oil-fired warm water, hot water or steam boiler |
| CN2731281Y (en) * | 2004-10-18 | 2005-10-05 | 佛山市顺德区万和集团有限公司 | Burner assembly for gas combustion water-heater |
| CN207945810U (en) * | 2017-11-17 | 2018-10-09 | 威能(无锡)供热设备有限公司 | Can provide multi-stage combustion gas hot water equipment |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1607363A (en) * | 2003-10-15 | 2005-04-20 | 中山华帝燃具股份有限公司 | Domestic gas instantaneous water heater capable of realizing gas-air proportional control |
| CN201173591Y (en) * | 2008-01-22 | 2008-12-31 | 默洛尼卫生洁具(中国)有限公司 | Heating system with multi- power automatic select function |
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