CN111365850A - Water heater control method based on wind pressure - Google Patents
Water heater control method based on wind pressure Download PDFInfo
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- CN111365850A CN111365850A CN202010136586.XA CN202010136586A CN111365850A CN 111365850 A CN111365850 A CN 111365850A CN 202010136586 A CN202010136586 A CN 202010136586A CN 111365850 A CN111365850 A CN 111365850A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 140
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000002485 combustion reaction Methods 0.000 claims abstract description 45
- 239000007789 gas Substances 0.000 description 10
- 239000000779 smoke Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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Classifications
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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
Abstract
The invention discloses a water heater control method based on wind pressure, which comprises the following steps: step S1, setting the current normal and stable combustion wind pressure value of the water heater as Y1Detecting whether the real-time wind pressure is less than the insufficient combustion wind pressure threshold value Y2If so, the water quantity of the water heater is reduced, the load of the water heater is reduced, and Y is reduced2And step S2 is entered, if not, the combustion is normally ignited; step S2, detecting whether the real-time wind pressure is less than the alarm wind pressure threshold value Y3If yes, go to step S4, otherwise go to step S3; step S3, detecting that the real-time wind pressure is less than the insufficient combustion wind pressure threshold Y2Whether the duration of (D) reaches the time t1If yes, the water heater is shut down, otherwise, the step S1 is executed; step S4, detecting that the real-time wind pressure is smaller than the alarm wind pressure threshold value Y3Whether the duration of (D) reaches the time t2If so, the water heater is turned off, otherwise, the process proceeds to step S1. The invention can improve the wind pressure fluctuation resistance of the water heater, can normally work in a safe wind pressure range, and provides hot water.
Description
Technical Field
The invention belongs to the technical field of gas water heaters, and particularly relates to a water heater control method based on wind pressure.
Background
Most of the existing gas water heaters are alternating-current updraft gas water heaters, the fan of the existing gas water heaters cannot be adjusted, when a user uses water, the gas water heater detects a water flow signal, the fan is started to clean the water, waste gas in the water heater is discharged through a smoke tube, the air pressure switch detects a closing signal, then ignition is carried out, an air valve is opened, combustion is carried out, and water flows out through the water heater after being heated.
When the water heater in the prior art burns, the ignition combustion can be carried out only by ensuring the smoothness of the air channel, otherwise, the oxygen supply is insufficient, flame downward burning (flame overflow) is caused after 5s, the related electric connecting wire of the water heater is damaged, and the flame overflow can not be generated in 3s generally. After the fan is started and the air duct system is unobstructed, the air duct generates air pressure towards the smoke tube direction, and the air pressure switch is closed after detecting the air pressure. The wind pressure signal line outputs a low level signal. If the smoke pipe is blocked, the wind generated by the fan is not discharged outwards, and the wind pressure switch cannot detect a closing signal at the moment, and the corresponding wind pressure value of the closing signal is about 69 pa. The wind pressure value corresponding to the open circuit is about 30 pa. The inside mechanical contact structure that is of wind pressure switch, the time is easy for the oxidation to close for a long time, leads to the wind pressure testing result inaccurate. Before ignition or in the combustion process, whether a wind pressure switch is closed or not is judged, and the closing represents that the air channel is smooth and the wind pressure system is normal. Due to the fact that external wind is large, or the smoke tube is accidentally blocked, and the wind switch is not closed, flame overflow or insufficient combustion is possible, and the water heater can give an alarm. However, because the wind pressure switch only has two signals for opening and closing, alarm points are consistent under different installation environments (smoke tube length), partial alarm is not timely, or alarm is too early, or false alarm easily occurs under gust, and finally the water heater cannot effectively ignite and burn, and the water quantity and the workload cannot be adjusted, so that the normal use and the safety are affected.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a water heater control method based on wind pressure, which can reasonably and safely control the water heater to work according to the wind pressure.
In order to achieve the purpose, the invention provides a water heater control method based on wind pressure, which comprises the following steps:
step S1, setting the current normal and stable combustion wind pressure value of the water heater as Y1The threshold value of insufficient combustion wind pressure is Y2The alarm wind pressure threshold is Y3(ii) a Detecting whether the real-time wind pressure is less than the insufficient combustion wind pressure threshold value Y2If so, the water quantity of the water heater is reduced, the load of the water heater is reduced, and Y is reduced2And step S2 is entered, if not, the combustion is normally ignited;
step S2, detecting whether the real-time wind pressure is less than the alarm wind pressure threshold value Y3If yes, go to step S4, otherwise go to step S3;
step S3, detecting that the real-time wind pressure is less than the insufficient combustion wind pressure threshold Y2Whether the duration of (D) reaches the time t1If yes, the water heater is shut down, otherwise, the step S1 is executed;
step S4, detecting that the real-time wind pressure is smaller than the alarm wind pressure threshold value Y3Whether the duration of (D) reaches the time t2If so, the water heater is turned off, otherwise, the process proceeds to step S1.
Further, in step S1, after the water volume of the water heater is adjusted to be small, the remaining water volume is not less than half of the water heater capacity.
Further, the method comprises step S0, setting the quick ignition wind pressure value as Y4Before the water heater is ignited and combusted, whether the real-time air pressure is greater than the quick ignition air pressure value Y or not is detected4If yes, the water heater is started to ignite quickly, and the process goes to step S1, otherwise, the water heater is not ignited.
Further, the method also comprises a step S5, wherein whether the water heater is turned off or not is judged, if yes, the water heater is shut down, and if not, the method goes to a step S1.
Further, in step S1, if the detected real-time wind pressure is not less than the insufficient combustion wind pressure threshold Y2Then, the process proceeds to step S5.
Further, in step S4, if the detected real-time wind pressure is less than the warning wind pressure threshold Y3Does not reach the time t2The process proceeds to step S5.
Further, the wind pressure value of the last normal stable combustion is set as the initial wind pressure value Y of the current combustion0Quick ignition wind pressure value Y4Is in the range of 30% Y0-35％YO。
Further, an insufficient combustion wind pressure threshold Y2Is taken in the range of 20% Y1-30％Y1。
Further, alarm wind pressure threshold Y3Is taken in the range of 10% Y1-20％Y1。
Further, time t1Is in the range of 8-10s, time t2The value range of (A) is 1.5-3 s.
Compared with the prior art, the invention has the beneficial effects that: the wind pressure sensor is adopted to detect real-time wind pressure change in real time, the dynamic change according to the wind pressure is combined with an insufficient wind pressure threshold value of combustion, the wind pressure value of alarm wind pressure threshold value and current normal and stable combustion is realized, the ignition condition and the alarm flameout condition of the gas water heater are reasonably adjusted at every time, and the water quantity and the workload of the water heater are synchronously adjusted, so that the water heater can normally ignite and combust in a safe wind pressure range, hot water supply is ensured, the situation that the water heater is controlled by only two signals set by the wind pressure switch in the traditional water heater is avoided, the water quantity and the workload of the water heater and the ignition condition and flameout condition cannot be reasonably adjusted according to the actual wind pressure condition, and the situation that CO or flame overflow cannot be generated due to insufficient.
Drawings
Fig. 1 is a flowchart of a water heater control method based on wind pressure according to an embodiment of the present invention.
Concrete real-time mode
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the invention provides a water heater control method based on wind pressure, which comprises the following steps as shown in figure 1:
step S1, setting the current normal and stable combustion wind pressure value of the water heater as Y1The threshold value of insufficient combustion wind pressure is Y2The alarm wind pressure threshold is Y3(ii) a Detecting whether the real-time wind pressure is less than the insufficient combustion wind pressure threshold value Y2If so, the water quantity of the water heater is reduced, the load of the water heater is reduced, and Y is reduced2And step S2 is entered, if not, the combustion is normally ignited;
step S2, detecting whether the real-time wind pressure is less than the alarm wind pressure threshold value Y3If yes, go to step S4, otherwise go to step S3;
step S3, detecting that the real-time wind pressure is less than the insufficient combustion wind pressure threshold Y2Whether the duration of (D) reaches the time t1If yes, the water heater is shut down, otherwise, the step S1 is executed;
step S4, detecting that the real-time wind pressure is smaller than the alarm wind pressure threshold value Y3Whether the duration of (D) reaches the time t2If so, the water heater is turned off, otherwise, the process proceeds to step S1.
By adopting the method, the real-time wind pressure change is detected in real time by adopting the wind pressure sensor, the ignition condition and the alarm flameout condition of the gas water heater are reasonably adjusted according to the dynamic change of the wind pressure by combining the insufficient combustion wind pressure threshold value, the alarm wind pressure threshold value and the current wind pressure value of normal and stable combustion, and the water quantity and the working load of the water heater are synchronously adjusted, so that the water heater can normally ignite and combust in a safe wind pressure range, the hot water supply is ensured, and the flameout is accurately carried out under the unsafe wind pressure; simultaneously, the insufficient wind pressure threshold value Y of combustion is adjusted downwards2The wind pressure fluctuation resistance can be improved.
Setting a threshold Y of insufficient wind pressure2The dangerous situation that the combustion of gas is unstable or insufficient and high-concentration CO is generated when the water heater is ignited and combusted under small wind pressure can be avoided; setting alarm wind pressure threshold Y3Can stop in time under the condition that strong wind exists outside or the gas pipe of the water heater is blocked and is not smoothThe burning of the water heater is stopped, and the serious flame overflow caused by the continuous ignition burning of the water heater is prevented.
In step S1, after the water volume of the water heater is adjusted to be small, the remaining water volume is not less than half of the water heater capacity. Therefore, the phenomenon that the water quantity of the water heater is insufficient due to excessive water quantity reduction of the water heater can be avoided, and the normal hot water supply and use are influenced.
As shown in FIG. 1, before step S1, a step S0 is further included to set the quick-ignition wind pressure value Y4Before the water heater is ignited and combusted, whether the real-time air pressure is greater than the quick ignition air pressure value Y or not is detected4If yes, the water heater is started to ignite quickly, and the process goes to step S1, otherwise, the water heater is not ignited. Therefore, the water heater can be ignited quickly under safe wind pressure, and a user can use hot water quickly.
The embodiment further includes step S5, determining whether the water heater is turned off, if so, turning off the water heater, otherwise, entering step S1. Specifically, in step S1, if the detected real-time wind pressure is not less than the insufficient combustion wind pressure threshold Y2Then, go to step S5; in step S4, if the detected real-time wind pressure is less than the warning wind pressure threshold Y3Does not reach the time t2The process proceeds to step S5. Therefore, the water heater can be prevented from continuously burning after the user turns off the water supply.
In this embodiment, the wind pressure value of the normal and stable combustion of the water heater last time is set as the initial wind pressure value Y of the combustion at this time0Quick ignition wind pressure value Y4Is in the range of 30% Y0-35％YOIn this embodiment, Y4Preferably 30% Y0(ii) a Real-time wind pressure Y detected before ignition of water heater>Y4The current wind pressure is safe, the water heater can ignite quickly, hot water can be discharged quickly, and the water heater is convenient to use.
Insufficient combustion wind pressure threshold Y2Is taken in the range of 20% Y1-30％Y1(ii) a Alarm wind pressure threshold Y3Is taken in the range of 10% Y1-20％Y1(ii) a In this example Y2Preferably 30% Y1，Y3Preferably 20% Y1. Thus, the stability can be stabilized according to the current normalThe wind pressure value of combustion is Y1The ignition condition of the water heater is effectively set, so that the water heater can work normally and safely.
Time t1The value range of (a) is 8-10s, this example t1Preferably 8 s; because under the condition of external small gust, the condition that the wind pressure is lower is probably appeared, because gust duration is shorter, and time delay 8s, when the wind pressure was greater than 30% again in this period, the water heater wind pressure can automatic recovery to normal condition, can avoid the wrong report to the police and let the frequent ignition flame-out of water heater in the short time, influence normal use.
Time t2The value range of (A) is 1.5-3 s; example t2Preferably 2S; therefore, the device can accurately judge whether the outside has strong wind or the air duct of the water heater is blocked, so as to give an alarm in time for reminding, perform further troubleshooting and avoid serious flame overflow.
The specific method of the embodiment is as follows:
step S0, setting the wind pressure value of the normal and stable burning of the water heater last time as the initial wind pressure value Y of the burning of this time0Quick ignition wind pressure value Y4＝30％Y0Before the water heater is ignited and combusted, whether the real-time air pressure is greater than the quick ignition air pressure value Y or not is detected4If yes, the water heater is started to ignite quickly, and the step S1 is entered, otherwise, the water heater does not ignite and an alarm is given to wind pressure failure;
step S1, setting the current normal and stable combustion wind pressure value of the water heater as Y1Insufficient combustion wind pressure threshold Y2＝30％Y1Alarm wind pressure threshold value Y3＝20％Y1(ii) a Detecting whether the real-time wind pressure is less than the insufficient combustion wind pressure threshold value Y, reducing the water quantity of the water heater, reducing the load of the water heater and Y2And step S2 is proceeded, if not, step S5 is proceeded;
step S2, detecting whether the real-time wind pressure is less than the alarm wind pressure threshold value Y3If yes, go to step S4, otherwise go to step S3;
step S3, detecting that the real-time wind pressure is less than the insufficient combustion wind pressure threshold Y2If the duration of (2) reaches a time greater than 8s, if soThe water heater is flamed out and the wind pressure fault is alarmed, if not, the step S1 is carried out;
step S4, detecting that the real-time wind pressure is smaller than the alarm wind pressure threshold value Y3If the duration time reaches more than 2S, the water heater is shut down and the wind pressure fault is alarmed, otherwise, the step S5 is carried out;
and step S5, judging whether the water heater is turned off, if so, closing a flameout gas valve of the water heater, and if not, entering step S1.
This embodiment replaces the wind pressure switch among the prior art through wind pressure sensor, and analog signal replaces digital signal, and the accessible reads the concrete signal size of wind pressure of different states and judges the alarm point of each load state, and the electronic water regulating valve of accessible reduces the water heater water yield, and the anti-wind pressure fluctuation ability of lift system prevents to report to the police untimely or report to the police and appear reporting to the police easily under too early problem or the gust.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A water heater control method based on wind pressure is characterized by comprising the following steps:
step S1, setting the current normal and stable combustion wind pressure value of the water heater as Y1The threshold value of insufficient combustion wind pressure is Y2The alarm wind pressure threshold is Y3(ii) a Detecting whether the real-time wind pressure is less than the insufficient combustion wind pressure threshold value Y2If so, the water quantity of the water heater is reduced, the load of the water heater is reduced, and Y is reduced2And step S2 is entered, if not, the combustion is normally ignited;
step S2, detecting whether the real-time wind pressure is less than the alarm wind pressure threshold value Y3If yes, go to step S4, otherwise go to step S3;
step S3, detecting that the real-time wind pressure is less than combustionInsufficient wind pressure threshold Y2Whether the duration of (D) reaches the time t1If yes, the water heater is shut down, otherwise, the step S1 is executed;
step S4, detecting that the real-time wind pressure is smaller than the alarm wind pressure threshold value Y3Whether the duration of (D) reaches the time t2If so, the water heater is turned off, otherwise, the process proceeds to step S1.
2. The wind pressure-based water heater control method according to claim 1, wherein in step S1, after the water volume of the water heater is adjusted to be small, the remaining water volume is not less than half of the water heater capacity.
3. The wind pressure-based water heater control method according to claim 1, further comprising a step S0 of setting the rapid ignition wind pressure value to Y4Before the water heater is ignited and combusted, whether the real-time air pressure is greater than the quick ignition air pressure value Y or not is detected4If yes, the water heater is started to ignite quickly, and the process goes to step S1, otherwise, the water heater is not ignited.
4. The wind pressure-based water heater control method according to any one of claims 1 to 3, further comprising a step S5 of determining whether the water heater is turned off, if so, turning off the water heater, otherwise, proceeding to a step S1.
5. The wind pressure-based water heater control method according to claim 4, wherein in step S1, if the detected real-time wind pressure is not less than the insufficient combustion wind pressure threshold Y2Then, the process proceeds to step S5.
6. The wind pressure-based water heater control method according to claim 5, wherein in step S4, if the detected real-time wind pressure is less than the alarm wind pressure threshold Y3Does not reach the time t2The process proceeds to step S5.
7. The wind-based according to claim 3The control method of the water heater is characterized in that the wind pressure value of the last normal stable combustion is set as the initial wind pressure value Y of the current combustion0And the quick ignition wind pressure value Y4Is in the range of 30% Y0-35％YO。
8. The wind pressure based water heater control method according to claim 7, wherein the insufficient combustion wind pressure threshold Y2Is taken in the range of 20% Y1-30％Y1。
9. The wind pressure-based water heater control method according to claim 8, wherein the alarm wind pressure threshold Y is set3Is taken in the range of 10% Y1-20％Y1。
10. The wind pressure-based water heater control method according to claim 9, wherein the time t is t1Is in the range of 8-10s, the time t2The value range of (A) is 1.5-3 s.
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| CN202010136586.XA CN111365850B (en) | 2020-03-02 | 2020-03-02 | Water heater control method based on wind pressure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010136586.XA CN111365850B (en) | 2020-03-02 | 2020-03-02 | Water heater control method based on wind pressure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028652A (en) * | 2021-04-03 | 2021-06-25 | 中山百得厨卫有限公司 | Water heater control method based on wind pressure sensor and water heater |
| CN114151976A (en) * | 2021-11-29 | 2022-03-08 | 广东万和新电气股份有限公司 | Gas water heater and blockage protection method and device thereof |
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| CN103727676A (en) * | 2013-12-02 | 2014-04-16 | 芜湖美的厨卫电器制造有限公司 | Gas water heater |
| CN204478515U (en) * | 2015-01-26 | 2015-07-15 | 广东万和新电气股份有限公司 | Domestic gas-fired water heater |
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| JPS60185052A (en) * | 1984-02-29 | 1985-09-20 | Matsushita Electric Ind Co Ltd | Instantaneous water heater |
| KR20070033689A (en) * | 2005-09-22 | 2007-03-27 | 주식회사 경동나비엔 | How to cut off safety when burning boiler |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113028652A (en) * | 2021-04-03 | 2021-06-25 | 中山百得厨卫有限公司 | Water heater control method based on wind pressure sensor and water heater |
| CN114151976A (en) * | 2021-11-29 | 2022-03-08 | 广东万和新电气股份有限公司 | Gas water heater and blockage protection method and device thereof |
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