CN116412547A - Gas water heater, control method and device thereof and storage medium - Google Patents
Gas water heater, control method and device thereof and storage medium Download PDFInfo
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- CN116412547A CN116412547A CN202111648796.8A CN202111648796A CN116412547A CN 116412547 A CN116412547 A CN 116412547A CN 202111648796 A CN202111648796 A CN 202111648796A CN 116412547 A CN116412547 A CN 116412547A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 266
- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000001105 regulatory effect Effects 0.000 claims abstract description 57
- 238000012937 correction Methods 0.000 claims abstract description 30
- 239000007789 gas Substances 0.000 claims description 257
- 238000002485 combustion reaction Methods 0.000 claims description 66
- 239000002737 fuel gas Substances 0.000 claims description 37
- 239000000446 fuel Substances 0.000 claims description 22
- 230000002159 abnormal effect Effects 0.000 claims description 10
- 239000000779 smoke Substances 0.000 description 17
- 238000001514 detection method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 10
- 238000004590 computer program Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
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- 238000005259 measurement Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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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
The invention discloses a gas water heater, a control method, a device and a storage medium thereof, wherein the method comprises the following steps: acquiring a rotating speed regulating value of an air inlet fan of the gas water heater, and acquiring a reference pressure value according to the rotating speed regulating value; acquiring a first measured pressure value in a flue of the gas water heater; and acquiring a correction value according to the first measured pressure value and the reference pressure value, correcting a preset pressure threshold value and the reference pressure value of the gas water heater by adopting the correction value, and storing the corrected preset pressure threshold value and the corrected reference pressure value, wherein the preset pressure threshold value comprises a first pressure threshold value and a second pressure threshold value. The invention improves the control accuracy of the gas water heater in practical application.
Description
Technical Field
The invention relates to the technical field of control of electrical equipment, in particular to a gas water heater, a control method and device thereof and a storage medium.
Background
The gas water heater is also called as gas water heater, which uses gas as fuel to transfer heat to cold water flowing through heat exchanger by combustion heating mode to obtain a gas appliance for preparing hot water.
At present, when the gas water heater is produced in a large scale, the pressure value detected by the pressure detection device (such as a pressure sensor) of each gas water heater has a difference in a reasonable range, if the fixed same preset pressure threshold value is used as a comparison critical value of the pressure value in the flue of each gas water heater, the operation parameters of the gas water heater cannot be adjusted in time, and the control accuracy of the gas water heater in practical application is reduced.
Disclosure of Invention
The embodiment of the application aims to solve the technical problem that the accuracy of gas water heater control in actual application is reduced by taking a fixed same preset pressure threshold value as a comparison critical value of the pressure value in a flue of each gas water heater due to the fact that the difference exists between the pressure values detected by the pressure detection device of each gas water heater in the gas water heater for mass production.
The embodiment of the application provides a control method of a gas water heater, which comprises the following steps:
acquiring a rotating speed regulating value of an air inlet fan of the gas water heater, and acquiring a reference pressure value according to the rotating speed regulating value; the reference pressure value is a pressure value in a flue, which is measured by an air inlet fan in a reference gas water heater prototype according to a preset rotating speed regulating value;
Acquiring a first measured pressure value in a flue of the gas water heater; and
and acquiring a correction value according to the first measured pressure value and the reference pressure value, correcting a preset pressure threshold value and the reference pressure value of the gas water heater by adopting the correction value, and storing the corrected preset pressure threshold value and the corrected reference pressure value.
In one embodiment, the step of obtaining the correction value according to the first measured pressure value and the reference pressure value includes:
and obtaining a difference value between the first measured pressure value and the reference pressure value, and taking the difference value as the correction value.
In an embodiment, the preset pressure threshold includes a first pressure threshold and a second pressure threshold, the first pressure threshold is smaller than the second pressure threshold, and the step of correcting the preset pressure threshold and the reference pressure value of the gas water heater by using the correction value includes:
summing the correction value and the first pressure threshold value to obtain a corrected first pressure threshold value;
summing the correction value and the second pressure threshold value to obtain a corrected second pressure threshold value;
Summing the corrected value and the reference pressure value to obtain a corrected reference pressure value;
wherein the corrected second pressure threshold is greater than the corrected first pressure threshold.
In an embodiment, the gas water heater control method further includes:
acquiring a second measured pressure value in a flue of the gas water heater;
and when the second measured pressure value is larger than the corrected first pressure threshold value, adjusting an air-fuel ratio example in a combustion chamber of the gas water heater.
In an embodiment, after the step of obtaining the second measured pressure value of the flue of the gas water heater, the method further includes:
when the second measured pressure value is larger than the corrected first pressure threshold value, acquiring a current second measured pressure value of a flue of the gas water heater;
when the current second measured pressure value is greater than or equal to the corrected second pressure threshold value, turning off the water heater and/or outputting alarm information of abnormal pressure value;
and executing the step of adjusting the air-fuel ratio in the combustion chamber of the gas water heater when the current second measured pressure value is smaller than the corrected second pressure threshold value.
In one embodiment, the step of adjusting the air-fuel ratio in the combustion chamber of the gas water heater comprises:
and increasing the rotating speed regulating value of the air inlet fan of the gas water heater to increase the air proportion in the combustion chamber of the gas water heater and/or reducing the opening regulating value of the gas proportional valve of the gas water heater to reduce the gas proportion of the gas water heater.
In one embodiment, the step of increasing the rotational speed adjustment value of the air intake fan of the gas water heater includes:
acquiring a preset rotation speed adjustment increment of the air inlet fan;
and increasing the rotating speed regulating value of the air inlet fan according to the preset rotating speed regulating increment.
In an embodiment, the step of reducing the opening adjustment value of the gas proportional valve of the gas water heater includes:
acquiring a preset opening adjustment increment of the fuel gas proportional valve;
and reducing the opening regulating value of the fuel gas proportional valve according to the preset opening regulating increment.
In an embodiment, the step of obtaining the rotation speed adjustment value of the air intake fan of the gas water heater includes:
obtaining the required hot water yield of the gas water heater;
and obtaining the rotating speed regulating value of the air inlet fan according to the required hot water yield and the corresponding relation between the preset required hot water yield and the preset rotating speed regulating value.
In addition, in order to achieve the above object, the present invention also provides a gas water heater control device, including: the gas water heater control system comprises a memory, a processor and a gas water heater control program which is stored in the memory and can run on the processor, wherein the gas water heater control program realizes the steps of the gas water heater control method when being executed by the processor.
In addition, in order to achieve the above object, the present invention also provides a gas water heater comprising: the gas water heater control method comprises the steps of a memory, a processor and a gas water heater control program which is stored in the memory and can run on the processor, wherein the gas water heater control program is executed by the processor to realize the gas water heater control method; or the gas water heater comprises the gas water heater control device.
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 described above.
The technical scheme of the gas water heater, the control method, the control device and the storage medium thereof provided by the embodiment of the application has at least the following technical effects or advantages:
The technical scheme that the preset pressure threshold value and the reference pressure value of the gas water heater are corrected by the corrected value and the corrected preset pressure threshold value and the corrected reference pressure value are stored is adopted, the technical problem that the difference exists between the pressure values detected by the pressure detection device of each gas water heater in the gas water heater in mass production, the fixed same preset pressure threshold value is used as a comparison critical value of the pressure values in the flue of each gas water heater in practical application, and the control accuracy of the gas water heater in practical application is reduced is solved.
Drawings
FIG. 1 is a schematic diagram of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the gas water heater according to the present invention;
FIG. 3 is a schematic flow chart of a first embodiment of a control method of a gas water heater according to the present invention;
FIG. 4 is a schematic flow chart of a second embodiment of a control method of a gas water heater according to the present invention;
FIG. 5 is a schematic flow chart of a third embodiment of a control method of a gas water heater according to the present invention;
FIG. 6 is a flow chart of a fourth embodiment of a control method of a gas water heater according to the present invention;
FIG. 7 is a graph showing the relationship between the rotational speed adjustment value of the intake fan and the first measured pressure value and the reference pressure value;
FIG. 8 is a graph showing the relationship between the hot water yield and the operating parameters of the gas water heater according to the present invention.
Detailed Description
In order that the above-described aspects may be better understood, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The method comprises the steps that a fixed same preset pressure threshold value is used as a comparison critical value of pressure values in flues of all gas water heaters, the technical problem of accuracy of gas water heater control in practical application is solved, a rotating speed adjusting value of an air inlet fan of the gas water heater is obtained, a reference pressure value is obtained according to the rotating speed adjusting value, the reference pressure value is a pressure value in a flue measured by an air inlet fan in a reference gas water heater model machine according to the preset rotating speed adjusting value, then a first actual measurement pressure value in the flue of the gas water heater is obtained, a correction value is obtained according to the first actual measurement pressure value and the reference pressure value, the preset pressure threshold value and the reference pressure value of the gas water heater are corrected by the correction value, the corrected preset pressure threshold value and the corrected reference pressure value are stored, and the accuracy of gas water heater control in practical application is improved.
As shown in fig. 1, fig. 1 is a schematic structural diagram of a hardware running environment according to an embodiment of the present invention.
It should be noted that fig. 1 may be a schematic structural diagram of a hardware operating environment of the gas water heater.
As shown in fig. 1, the gas water heater may include: a processor 1001, such as a CPU, memory 1005, user interface 1003, network interface 1004, communications bus 1002. 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 gas water heater structure shown in FIG. 1 is not limiting of the gas water heater and may include more or fewer components than shown, or certain components may be combined, or a different arrangement of components.
As shown in fig. 1, an operating system, a network communication module, a user interface module, and a gas water heater control program may be included in the memory 1005 as one type of storage medium. The operating system is a program for managing and controlling hardware and software resources of the gas water heater, a gas water heater control program and other software or running of the program.
In the gas water heater shown in fig. 1, the user interface 1003 is mainly used for connecting a terminal, and is in data communication with the terminal; the network interface 1004 is mainly used for a background server and is in data communication with the background server; the processor 1001 may be used to invoke a gas water heater control program stored in the memory 1005.
In this embodiment, the gas water heater includes: a memory 1005, a processor 1001, and a gas water heater control program stored on the memory 1005 and operable on the processor, wherein:
when the processor 1001 calls the gas water heater control program stored in the memory 1005, the following operations are performed:
acquiring a rotating speed regulating value of an air inlet fan of the gas water heater, and acquiring a reference pressure value according to the rotating speed regulating value; the reference pressure value is a pressure value in a flue, which is measured by an air inlet fan in a reference gas water heater prototype according to a preset rotating speed regulating value;
Acquiring a first measured pressure value in a flue of the gas water heater; and
and acquiring a correction value according to the first measured pressure value and the reference pressure value, correcting a preset pressure threshold value and the reference pressure value of the gas water heater by adopting the correction value, and storing the corrected preset pressure threshold value and the corrected reference pressure value.
Embodiments of the present invention provide embodiments of a gas water heater control method, it being noted that although a logic sequence is shown in the flow chart, in some cases the steps shown or described may be performed in a different order than that shown or described herein.
As shown in fig. 2, 101 denotes an intake fan, which is also called a blower, 102 denotes a gas proportional valve, 103 denotes a burner, 104 denotes a combustion chamber, 105 denotes a heat exchanger, and 106 denotes a smoke exhaust pipe. The gas water heater comprises a shell, an air inlet fan, a gas proportional valve, a combustor, a combustion chamber and a heat exchanger are arranged in the shell, the combustion chamber comprises the combustor and the heat exchanger, the combustor and the heat exchanger are arranged at intervals, the combustor is located at the bottom of the combustion chamber, and the heat exchanger is located at the upper portion of the combustion chamber. The air inlet fan and the gas proportional valve are both arranged at the bottom of the burner, the air inlet fan is used for conveying air (providing oxygen required by gas combustion) into the combustion chamber, the gas proportional valve is connected with a gas pipeline, wherein the gas quantity entering the combustion chamber can be regulated by regulating the opening regulating value of the gas proportional valve, such as increasing the gas inflow or reducing the gas inflow; by adjusting the rotational speed adjustment value of the air intake fan, the air amount entering the combustion chamber can be adjusted, such as increasing the air amount entering the combustion chamber or decreasing the air amount entering the combustion chamber; the opening adjustment value of the fuel gas proportional valve and/or the rotation speed adjustment value of the air inlet fan are/is adjusted, so that the air-fuel ratio in the combustion chamber can be adjusted. The burner is used for burning the fuel gas, and the heat generated by the combustion of the fuel gas can heat the water in the heat exchanger, so that hot water required by life is provided for users. The smoke exhaust pipe is arranged at the top of the shell, and smoke generated by burning fuel gas in the combustion chamber can be discharged into the external environment of the shell through the smoke exhaust pipe.
When the gas water heater works, air exhausted by the air outlet of the air inlet fan enters the combustion chamber through the burner, smoke generated in the combustion chamber is exhausted to the external environment of the shell through the smoke exhaust pipe, the air outlet of the air inlet fan, the burner, the combustion chamber and the smoke exhaust pipe are communicated in sequence, namely, a passage is formed, and the passage from the air outlet of the air inlet fan to the outlet of the smoke exhaust pipe can be understood as a flue of the gas water heater.
As shown in fig. 3, in a first embodiment of the present application, the gas water heater control method of the present application includes the following steps:
step S110: and acquiring a rotating speed regulating value of an air inlet fan of the gas water heater, and acquiring a reference pressure value according to the rotating speed regulating value.
In this embodiment, the reference pressure value is a pressure value in a flue measured by an air inlet fan in a reference gas water heater prototype operating according to a preset rotation speed adjustment value, and the reference gas water heater prototype can be understood as a reference gas water heater preset when a designer designs equipment specifications, and when gas water heaters are produced in a large scale, each produced gas water heater is produced according to performance indexes of the reference gas water heater prototype. After the standard gas water heater prototype is set, the air inlet fan in the standard gas water heater prototype is operated according to different preset rotating speed adjusting values, so that the pressure value in the flue can be measured, the measured pressure value is the standard pressure value, and accordingly different standard pressure values can be obtained when the air inlet fan in the standard gas water heater prototype is operated according to different preset rotating speed adjusting values.
When the air inlet fan in the standard gas water heater prototype operates according to different preset rotation speed adjusting values, the different preset rotation speed adjusting values refer to a group of rotation speed adjusting values, and particularly a range value. For example, the range of values is 50-200, in this test environment, the 2 speed adjustment values are used (50, 200), the 4 adjustment values are used (50,100,150,200), etc. And operating the measured pressure value in the flue according to the rotating speed regulating values to obtain a reference pressure value, wherein the pressure value in the flue is a group of pressure values, and the pressure value corresponds to each rotating speed regulating value one by one. Further, the preset rotation speed adjusting value is denoted by PR, the reference pressure value is denoted by h0, if the reference pressure value measured when the air intake fan operates according to the preset rotation speed adjusting value PR is h0, then a corresponding relationship exists between the rotation speed adjusting value of the air intake fan in the reference gas water heater model machine and the reference pressure value, namely, the PR corresponds to h0, and then a corresponding relationship between the rotation speed adjusting value of the air intake fan in the reference gas water heater model machine and the measured reference pressure value can be established.
Specifically, when the gas water heater is produced, a pressure detection device, such as a pressure sensor, is arranged in the flue, the pressure sensor is provided with a pressure detection probe, and the pressure detection probe is arranged at a position in the flue. In one example, the pressure sensing probe may be positioned between the outlet of the air intake blower and the burner, within the smoke evacuation tube, and so forth. When the gas water heater produces hot water, the pressure sensor detects pressure detection data in the flue of the gas water heater in real time, and the gas water heater acquires a pressure value in the flue according to the pressure detection data.
Because the difference in reasonable range exists between the pressure value detected by the pressure detection device (such as a pressure sensor) of each produced gas water heater and the pressure value detected by the pressure detection device (such as a pressure sensor) of other gas water heaters when the produced gas water heater is produced in mass production, after the produced gas water heater is applied to the actual life, the produced gas water heater can be compared with the actual measurement pressure value in the flue of the gas water heater according to the fixed same preset pressure threshold value and the standard pressure value, so that the control of the gas water heater is realized, namely, the operation parameters (such as the rotating speed regulation value of a blower) of the gas water heater are regulated, and the problem of inaccurate control of the gas water heater often occurs. Based on this, in order to improve the accuracy of gas water heater control in practical application, the preset pressure threshold value and the reference pressure value of each gas water heater need to be corrected. The correction of the preset pressure threshold value and the reference pressure value requires that the gas water heater is operated in a test environment, and after the gas water heater is operated, the rotation speed regulating value of the air inlet fan of the gas water heater is obtained. The rotation speed adjusting value can be understood as a PWM fan control setting value, or a fan control adjusting setting value, or a fan control adjusting value.
Step S120: and obtaining a first measured pressure value in a flue of the gas water heater.
In this embodiment, after the rotation speed adjustment value is obtained, the rotation speed of the air intake fan is adjusted by the rotation speed adjustment value, so as to obtain the rotation speed required by operation, namely the required rotation speed, and the air intake fan is controlled to work according to the required rotation speed. After the gas water heater is operated, a first measured pressure value is obtained, wherein the first measured pressure value is the pressure value measured by a pressure sensor when the gas water heater is operated in a test environment. After the first measured pressure value is obtained, a correspondence relationship among the rotation speed adjustment value, the reference pressure value, and the first measured pressure value may be established.
As shown in fig. 7, the x-axis represents a preset rotation speed adjustment value PR of the air intake fan, the y-axis represents a first measured pressure value hn and a reference pressure value h0, wherein the preset rotation speed adjustment value PR of the air intake fan and a corresponding group hn and h0, and n represents what number of production the gas water heater is. If the 3 rd gas water heater is operated in the test environment, the measured first measured pressure value is h3, and the current operating rotation speed adjusting value of the air intake fan installed in the 3 rd gas water heater is PR, then a set of first measured pressure value and reference pressure value, namely h3 and h0, can be found according to PR according to fig. 7; in another example, when the produced 4 th gas water heater operates in the test environment, the current rotation speed adjusting value of the air inlet fan installed in the produced 4 th gas water heater is PR, and then a set of first measured pressure value and reference pressure value, namely h4 and h0, can be found according to PR according to FIG. 7. The measured hn of each n gas water heaters adopts the h0 corresponding to the same group PR and PR to control each water heater, namely, no matter how many gas water heaters are produced, each gas water heater is controlled by using the h0 corresponding to the same group PR and PR.
Step S130: and acquiring a correction value according to the first measured pressure value and the reference pressure value, correcting a preset pressure threshold value and the reference pressure value of the gas water heater by adopting the correction value, and storing the corrected preset pressure threshold value and the corrected reference pressure value.
In this embodiment, for the same gas water heater, after the reference pressure value and the first measured pressure value of the same gas water heater are obtained, the difference between the first measured pressure value and the reference pressure value is obtained, and the difference is used as the correction value, that is, the correction value=the first measured pressure value-the reference pressure value. In this embodiment, dn is represented as a correction value, and dn=hn-h 0, n represents what number of gas water heaters are produced. It is assumed that the gas water heater is the 5 th stage at production, i.e. d5=h5-h 0.
The preset pressure threshold includes a first pressure threshold and a second pressure threshold, the first pressure threshold being less than the second pressure threshold. Further, after the correction value is obtained, the preset pressure threshold value and the reference pressure value are corrected according to the correction value, that is, the first pressure threshold value, the second pressure threshold value and the reference pressure value are respectively increased by adopting the correction value. Specifically, summing the correction value and the first pressure threshold value to obtain a corrected first pressure threshold value; summing the corrected value and the second pressure threshold value to obtain a corrected second pressure threshold value; and summing the corrected value and the reference pressure value to obtain a corrected reference pressure value. The corrected second pressure threshold is greater than the corrected first pressure threshold. In this embodiment, H1 is denoted as the first pressure threshold, H2 is denoted as the second pressure threshold, H1 is denoted as the corrected first pressure threshold, H2 is denoted as the corrected second pressure threshold, that is, h1=h1+dn, h2=h2+dn, and if the currently produced gas water heater is the 5 th stage, h1=h1+d5, h2=h2+d5, and H2 > H1.
And further, after the first pressure threshold value, the second pressure threshold value and the reference pressure value are corrected, the corrected first pressure threshold value, the corrected second pressure threshold value and the corrected reference pressure value are stored, and when the gas water heater is actually applied, the corrected first pressure threshold value, the corrected second pressure threshold value and the corrected reference pressure value are compared with a second actually measured pressure value in a flue of the gas water heater, so that the control of the gas water heater is realized, and the control accuracy of the gas water heater in actual application is improved.
As shown in fig. 4, in a second embodiment of the present application, the gas water heater control method further includes the steps of:
step S140: and obtaining a second measured pressure value in the flue of the gas water heater.
Step S141: judging whether the second measured pressure value is greater than the corrected first pressure threshold value, if so, executing step S142; if not, the process returns to step S140.
Step S142: and adjusting the air-fuel ratio in the combustion chamber of the gas water heater.
In practical application, when the gas water heater produces hot water, under normal ambient pressure, the pressure in the flue of the gas water heater has pressure difference with the pressure in the external environment, and the pressure in the flue is greater than the pressure in the external environment, and the flue gas generated by combustion of gas in the combustion chamber can be discharged to the external environment through the smoke exhaust pipe. If the pressure of the external environment is increased, the pressure increase in the external environment can possibly cause unsmooth smoke exhaust of a smoke exhaust pipe of the gas water heater, so that smoke generated by gas combustion cannot be discharged in time, and air in the external environment is difficult to enter a combustion chamber from an air inlet fan, so that the air in the combustion chamber cannot be supplemented in time.
In this embodiment, whether the smoke exhaust pipe of the gas water heater is unsmooth is judged by the corrected first pressure threshold value and the acquired second measured pressure value in the flue. Specifically, after the second measured pressure value in the flue is obtained, judging whether the second measured pressure value is greater than the corrected first pressure threshold value, if the second measured pressure value is greater than the corrected first pressure threshold value, judging that the smoke exhaust pipe of the gas water heater is not smooth, and adjusting the air-fuel ratio in the combustion chamber of the gas water heater, wherein the air-fuel ratio refers to the ratio of air to gas. The air-fuel ratio adjusting method comprises the steps of adjusting the air-fuel ratio in a combustion chamber of the gas water heater, namely increasing the rotating speed adjusting value of an air inlet fan and/or reducing the opening adjusting value of a gas proportional valve of the gas water heater, namely increasing the rotating speed of the air inlet fan and/or reducing the opening of the gas proportional valve of the gas water heater. Thus, the air-fuel ratio in the combustion chamber of the gas water heater can be adjusted. The required rotation speed of the air intake fan=original rotation speed+rotation speed regulating value, the required opening of the fuel gas proportional valve=original opening-opening regulating value, after the rotation speed regulating value of the air intake fan is increased, the rotation speed of the air intake fan is increased, and after the opening regulating value of the fuel gas proportional valve is reduced, the opening of the fuel gas proportional valve is reduced. If the second measured pressure value is greater than or equal to the corrected reference pressure value and the second measured pressure value is less than or equal to the corrected first pressure threshold value, the gas water heater is good in running state, and the air-fuel ratio in the combustion chamber of the gas water heater does not need to be adjusted.
Increasing the rotational speed adjustment value of the intake fan includes: and acquiring a preset rotating speed adjusting increment of the air inlet fan, and increasing the rotating speed adjusting value of the air inlet fan according to the preset rotating speed adjusting increment. In an example, assuming that the rotation speed adjustment value of the air intake fan is PR, the preset rotation speed adjustment increment is dP1, the second measured pressure value obtained in the flue is H, the corrected first pressure threshold value is H1, the rotation speed adjustment value of the increased air intake fan is PR1, and if H is less than or equal to H1, PR is kept unchanged; if H > H1, pr1=pr+dp 1. After the rotation speed regulating value of the air inlet fan is increased, the rotation speed of the air inlet fan is increased, and the air quantity entering the combustion chamber is increased, so that the air proportion in the combustion chamber is increased. That is, under the condition that the smoke exhaust pipe is not smooth, the air ratio in the combustion chamber is low and the air inflow of the fuel gas in the combustion chamber is not changed, the fuel gas is comburent by increasing the air ratio in the combustion chamber, so that sufficient oxygen exists in the combustion chamber to burn the fuel gas in the combustion chamber sufficiently, and the waste of the fuel gas is reduced.
Reducing the opening adjustment value of the gas proportional valve includes: and acquiring a preset opening adjustment increment of the fuel gas proportional valve, and then reducing the opening adjustment value of the fuel gas proportional valve according to the preset opening adjustment increment. In an example, assuming that the current opening adjustment value of the fuel gas proportional valve is PV, the preset opening adjustment increment is dP2, the acquired second measured pressure value in the flue is H, the corrected first pressure threshold value is H1, and the opening adjustment value of the reduced proportional valve is PV1, namely if H is less than or equal to H1, the PV is kept unchanged; if H > H1, pv1=pv-dP 2. After the opening adjustment value of the fuel gas proportional valve is reduced, the opening of the fuel gas proportional valve is reduced, and the air inflow of fuel gas entering the combustion chamber is reduced, so that the fuel gas proportion in the combustion chamber is reduced, namely, under the condition that the smoke exhaust pipe is not smooth and the air proportion in the combustion chamber is low, the fuel gas in the combustion chamber can be combusted more fully by reducing the fuel gas proportion in the combustion chamber, and the waste of the fuel gas is reduced.
Further, the air quantity entering the combustion chamber can be increased by increasing the rotating speed adjusting value of the air inlet fan, and/or the air quantity of the fuel gas entering the combustion chamber can be reduced by reducing the opening adjusting value of the fuel gas proportional valve, so that the air-fuel ratio in the combustion chamber is adjusted, the fuel gas in the combustion chamber is more fully combusted, and the waste of the fuel gas is reduced.
As shown in fig. 5, in the third embodiment of the present application, step S140 may further include the following steps:
step S1411: when the second measured pressure value is larger than the corrected first pressure threshold value, acquiring a current second measured pressure value of a flue of the gas water heater;
step S1412, judging whether the current second measured pressure value is greater than or equal to the corrected second pressure threshold value, if yes, executing step S1413 and/or step S1414; if not, step S1415 is performed.
Step S1413: and closing the water heater.
Step S1414: and outputting alarm information of abnormal pressure value.
Step S1415: and adjusting the air-fuel ratio in the combustion chamber of the gas water heater.
In this embodiment, the corrected second pressure threshold may be understood as an abnormal pressure alarm value in the flue, and whether the pressure in the flue of the gas water heater is abnormal or not is judged according to the corrected second pressure threshold and the obtained current second measured pressure value in the flue, and whether the gas water heater has potential safety hazard or not is judged. Specifically, if the second actually measured pressure value obtained before is greater than the corrected first pressure threshold value, the current second actually measured pressure value in the flue is H ', the corrected second pressure threshold value is H2, after the current second actually measured pressure value H' in the flue is obtained, whether H 'is greater than or equal to H2 is judged, if H' < H2, the air-fuel ratio in the combustion chamber of the gas water heater is adjusted, the air amount entering the combustion chamber is increased, and/or the air amount of the gas entering the combustion chamber is reduced, so that the air-fuel ratio is adjusted, and the gas in the combustion chamber is combusted more fully. If H is more than or equal to H2, judging that the pressure in the flue of the gas water heater is abnormal, wherein potential safety hazards possibly occur due to overlarge pressure in the flue of the gas water heater, in this case, the gas water heater can be controlled to be directly closed, alarm information of abnormal pressure value of the gas water heater can be sent to a user, and the gas water heater can be controlled to be directly closed, and meanwhile, alarm information of abnormal pressure value of the gas water heater is sent, and the user is timely reminded of carrying out abnormal response of the gas water heater through the alarm information, so that the occurrence of the potential safety hazards is reduced; the alarm information can be the sound of warning reminding, abnormal prompt voice and the like.
The air-fuel ratio adjusting method comprises the steps of adjusting the air-fuel ratio in a combustion chamber of the gas water heater, namely increasing the rotating speed adjusting value of an air inlet fan and/or reducing the opening adjusting value of a gas proportional valve of the gas water heater, namely increasing the rotating speed of the air inlet fan and/or reducing the opening of the gas proportional valve of the gas water heater. Specifically, increasing the rotational speed adjustment value of the intake fan includes: and acquiring a preset rotating speed adjusting increment of the air inlet fan, and increasing the rotating speed adjusting value of the air inlet fan according to the preset rotating speed adjusting increment. Assuming that the rotating speed regulating value of the air inlet fan is PR, the preset rotating speed regulating increment is dP1, the second measured pressure value in the flue is H, the corrected first pressure threshold value is H1, the rotating speed regulating value of the air inlet fan is PR1, and if H is less than or equal to H1, PR is kept unchanged; if H > H1, pr1=pr+dp 1. After the rotation speed regulating value of the air inlet fan is increased, the rotation speed of the air inlet fan is increased, and the air quantity entering the combustion chamber is increased, so that the air proportion in the combustion chamber is increased. Reducing the opening adjustment value of the gas proportional valve includes: and acquiring a preset opening adjustment increment of the fuel gas proportional valve, and then reducing the opening adjustment value of the fuel gas proportional valve according to the preset opening adjustment increment. Assuming that the current opening adjustment value of the fuel gas proportional valve is PV, the preset opening adjustment increment is dP2, the second measured pressure value in the flue is H, the corrected first pressure threshold value is H1, and the opening adjustment value of the reduced proportional valve is PV1, namely if H is less than or equal to H1, the PV is kept unchanged; if H > H1, pv1=pv-dP 2. After the opening adjustment value of the gas proportional valve is reduced, the opening of the gas proportional valve is reduced, and the intake air amount of the gas entering the combustion chamber is reduced, thereby reducing the gas proportion in the combustion chamber. The air quantity entering the combustion chamber can be increased by increasing the rotating speed regulating value of the air inlet fan, and/or the air quantity of the fuel gas entering the combustion chamber can be reduced by reducing the opening regulating value of the fuel gas proportional valve, so that the regulation of the air-fuel ratio in the combustion chamber is realized, the fuel gas in the combustion chamber is more fully combusted, and the waste of the fuel gas is reduced.
As shown in fig. 6, in a fourth embodiment of the present application, step S210, the obtaining the rotation speed adjustment value of the air intake fan of the gas water heater includes the following steps:
step S001: and obtaining the required hot water yield of the gas water heater.
Step S002: and obtaining the rotating speed regulating value of the air inlet fan according to the required hot water yield and the corresponding relation between the preset required hot water yield and the preset rotating speed regulating value.
In this embodiment, the required hot water yield is obtained according to the water flow rate and the water inlet temperature, that is, the water flow rate, the water inlet temperature and the user set temperature of the water entering the heat exchanger are obtained, and the required hot water yield of the gas water heater is calculated according to the water flow rate, the water temperature and the set temperature. The different hot water yields are corresponding to different operation parameters, and the operation parameters comprise a rotating speed adjusting value of the air inlet fan and an opening adjusting value of the fuel gas proportional valve. As shown in fig. 8, the horizontal axis represents the preset required hot water yield, and the vertical axis represents the preset rotation speed adjustment value PR of the air intake fan and the preset opening adjustment value PV of the gas proportional valve, and each preset required hot water yield corresponds to the preset rotation speed adjustment value of one air intake fan and the preset opening adjustment value of one gas proportional valve. According to the preset hot water yield and the preset rotating speed adjusting value, the rotating speed adjusting value of the air inlet fan is adjusted according to the hot water yield requirement during operation so as to meet the hot water yield requirement.
After the current required hot water yield of the gas water heater is obtained, the relation between the required hot water yield and the operation parameters in fig. 8 is searched through the current required hot water yield, the rotation speed regulating value of the air inlet fan corresponding to the current required hot water yield and the opening regulating value of the gas proportional valve can be obtained, the obtained rotation speed regulating value and the obtained opening regulating value can be understood to be the required rotation speed regulating value and the required opening regulating value, the gas water heater is controlled to operate according to the required rotation speed regulating value and the required opening regulating value, and then the related steps of correcting the preset pressure threshold value and the reference pressure value are executed.
Further, the invention also provides a control device of the gas water heater, which comprises: the gas water heater control system comprises a memory, a processor and a gas water heater control program which is stored in the memory and can run on the processor, wherein the gas water heater control program realizes the steps of the gas water heater control method when being executed by the processor.
Further, in order to achieve the above object, the present invention also provides a gas water heater, including: the gas water heater control method comprises the steps of a memory, a processor and a gas water heater control program which is stored in the memory and can run on the processor, wherein the gas water heater control program is executed by the processor to realize the gas water heater control method; or the gas water heater comprises the gas water heater control device.
Further, 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 described above.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (12)
1. The control method of the gas water heater is characterized by comprising the following steps of:
acquiring a rotating speed regulating value of an air inlet fan of the gas water heater, and acquiring a reference pressure value according to the rotating speed regulating value; the reference pressure value is a pressure value in a flue, which is measured by an air inlet fan in a reference gas water heater prototype according to a preset rotating speed regulating value;
acquiring a first measured pressure value in a flue of the gas water heater; and
and acquiring a correction value according to the first measured pressure value and the reference pressure value, correcting a preset pressure threshold value and the reference pressure value of the gas water heater by adopting the correction value, and storing the corrected preset pressure threshold value and the corrected reference pressure value.
2. The method of claim 1, wherein the step of obtaining a correction value based on the first measured pressure value and the reference pressure value comprises:
and obtaining a difference value between the first measured pressure value and the reference pressure value, and taking the difference value as the correction value.
3. The method of claim 2, wherein the preset pressure threshold comprises a first pressure threshold and a second pressure threshold, the first pressure threshold being less than the second pressure threshold, the step of correcting the preset pressure threshold and the reference pressure value of the gas water heater using the correction value comprising:
summing the correction value and the first pressure threshold value to obtain a corrected first pressure threshold value;
summing the correction value and the second pressure threshold value to obtain a corrected second pressure threshold value;
summing the corrected value and the reference pressure value to obtain a corrected reference pressure value;
wherein the corrected second pressure threshold is greater than the corrected first pressure threshold.
4. The method of claim 3, wherein the gas water heater control method further comprises:
Acquiring a second measured pressure value in a flue of the gas water heater;
and when the second measured pressure value is larger than the corrected first pressure threshold value, adjusting an air-fuel ratio example in a combustion chamber of the gas water heater.
5. The method of claim 4, wherein after the step of obtaining a second measured pressure value for the flue of the gas water heater, further comprising:
when the second measured pressure value is larger than the corrected first pressure threshold value, acquiring a current second measured pressure value of a flue of the gas water heater;
when the current second measured pressure value is greater than or equal to the corrected second pressure threshold value, turning off the water heater and/or outputting alarm information of abnormal pressure value;
and executing the step of adjusting the air-fuel ratio in the combustion chamber of the gas water heater when the current second measured pressure value is smaller than the corrected second pressure threshold value.
6. The method of claim 4, wherein the step of adjusting the air-fuel ratio in the combustion chamber of the gas water heater comprises:
and increasing the rotating speed regulating value of the air inlet fan of the gas water heater to increase the air proportion in the combustion chamber of the gas water heater and/or reducing the opening regulating value of the gas proportional valve of the gas water heater to reduce the gas proportion of the gas water heater.
7. The method of claim 6, wherein the step of increasing the rotational speed adjustment value of the air intake fan of the gas water heater comprises:
acquiring a preset rotation speed adjustment increment of the air inlet fan;
and increasing the rotating speed regulating value of the air inlet fan according to the preset rotating speed regulating increment.
8. The method of claim 6, wherein the step of reducing the opening adjustment value of the gas proportional valve of the gas water heater comprises:
acquiring a preset opening adjustment increment of the fuel gas proportional valve;
and reducing the opening regulating value of the fuel gas proportional valve according to the preset opening regulating increment.
9. The method of claim 1, wherein the step of obtaining a rotational speed adjustment value of an intake fan of the gas water heater comprises:
obtaining the required hot water yield of the gas water heater;
and obtaining the rotating speed regulating value of the air inlet fan according to the required hot water yield and the corresponding relation between the preset required hot water yield and the preset rotating speed regulating value.
10. A gas water heater control device, comprising: memory, a processor and a gas water heater control program stored on the memory and operable on the processor, which gas water heater control program, when executed by the processor, realizes the steps of the gas water heater control method as claimed in any one of claims 1-9.
11. A gas water heater, characterized in that it comprises: a memory, a processor and a gas water heater control program stored on the memory and operable on the processor, which when executed by the processor, performs the steps of the gas water heater control method of any one of claims 1-9; alternatively, the gas water heater comprises a gas water heater control device as claimed in claim 10.
12. A storage medium having stored thereon a gas water heater control program which when executed by a processor performs the steps of the gas water heater control method of any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111648796.8A CN116412547A (en) | 2021-12-29 | 2021-12-29 | Gas water heater, control method and device thereof and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111648796.8A CN116412547A (en) | 2021-12-29 | 2021-12-29 | Gas water heater, control method and device thereof and storage medium |
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