CN112378089A - Method for reducing minimum load of gas water heater and gas water heater using same - Google Patents
Method for reducing minimum load of gas water heater and gas water heater using same Download PDFInfo
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- CN112378089A CN112378089A CN202011134101.XA CN202011134101A CN112378089A CN 112378089 A CN112378089 A CN 112378089A CN 202011134101 A CN202011134101 A CN 202011134101A CN 112378089 A CN112378089 A CN 112378089A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 202
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 claims abstract description 91
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 abstract description 7
- 230000002093 peripheral effect Effects 0.000 abstract description 5
- 238000003287 bathing Methods 0.000 description 1
- 238000006467 substitution reaction 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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- Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
The invention discloses a method for reducing the minimum load of a gas water heater and the gas water heater using the same, wherein the method for reducing the minimum load of the gas water heater comprises the following steps: s1, when the gas water heater is at the minimum load, the fan is at the first rotating speed, and the proportional valve is at the standard current; s2, after the heating is continued for the first time, judging whether the water outlet temperature is not higher than the preset temperature, if so, continuing to heat, and if not, performing the next step; and S3, collecting water production load data to calculate a real-time water production value, and adjusting the rotating speed of the fan and the current of the proportional valve according to the real-time water production value so as to reduce the minimum load. The method for reducing the minimum load of the gas water heater adjusts the fan rotating speed and the proportional valve current of the gas water heater through the water production value, thereby avoiding the influence of difference of each device and peripheral gas supply pressure, not only intelligently adjusting and reducing the minimum load, but also ensuring the combustion stability, and even if the water inlet temperature is higher, the method can also meet the user requirements.
Description
Technical Field
The invention belongs to the technical field of load reduction, and particularly relates to a method for reducing the minimum load of a gas water heater and the gas water heater using the same.
Background
The minimum load of the existing gas water heater is generally higher, and the circulating flow is smaller. When the inlet water temperature of the gas water heater is high, for example, higher than 28 ℃, the outlet water temperature heated at the minimum load is far higher than the temperature required by a user, so that the gas water heater can not use a zero cold water function basically, or the outlet water temperature exceeds 10 ℃ when the gas water heater is used, so that the temperature of a pipeline after circulation is uneven.
Disclosure of Invention
In order to solve the problems, the invention provides a method for reducing the minimum load of a gas water heater, which can intelligently adjust and reduce the minimum load, ensure the combustion stability and meet the requirements of users even if the inlet water temperature is higher.
It is another object of the present invention to provide a gas water heater.
The technical scheme adopted by the invention is as follows:
a method of reducing minimum load for a gas water heater comprising the steps of:
s1, when the gas water heater is at the minimum load, the fan is at the first rotating speed, and the proportional valve is at the standard current;
s2, after the heating is continued for the first time, judging whether the water outlet temperature is not higher than the preset temperature, if so, continuing to heat, and if not, performing the next step;
and S3, collecting water production load data to calculate a real-time water production value, and adjusting the rotating speed of the fan and the current of the proportional valve according to the real-time water production value so as to reduce the minimum load.
Preferably, the S3 is specifically:
s31, collecting at least two groups of water production load data at fixed intervals and calculating the average value of real-time water production;
and S32, adjusting the rotating speed of the fan and the current of the proportional valve according to the real-time water production average value.
Preferably, the S32 is specifically:
when the real-time water production average value is larger than the first water production value, reducing the first fixed value of the proportional valve current and returning to S2;
when the real-time water production average value is larger than the second water production value and smaller than the first water production value, reducing the rotating speed of the motor to a second rotating speed, reducing the current of the proportional valve to a first fixed value, judging whether flameout occurs or not, if yes, returning to S1, and if not, returning to S2;
and when the real-time water production average value is smaller than a second water production value, reducing the rotating speed of the motor to a second rotating speed, increasing the first fixed value of the current of the proportional valve and judging whether flameout occurs or not, if yes, returning to S1, and if not, returning to S2.
Preferably, the water production load data includes inlet water temperature, outlet water temperature and water flow.
Preferably, the calculation formula of the real-time water production value P is as follows:
P＝L*(Tdischarging water-TInflow water)
Wherein P is the real-time water production value, L is the water flow, TDischarging waterIs the temperature of the outlet water, TInflow waterThe temperature of the inlet water is shown.
Preferably, the first water production value is greater than the second water production value, and the first rotation speed is greater than the second rotation speed.
Preferably, the preset temperature is the temperature set by the user plus 2-5 ℃.
Preferably, the first time is in the order of seconds and the fixed time is in the order of milliseconds.
Preferably, the first fixed value is in milliamps.
The other technical scheme of the invention is realized as follows:
a gas water heater comprises a method for reducing the minimum load by applying the gas water heater.
Compared with the prior art, the method for reducing the minimum load of the gas water heater adjusts the fan rotating speed and the proportional valve current of the gas water heater through the water production value, thereby avoiding the influence of difference of each device and peripheral gas supply pressure, not only reducing the minimum load through intelligent adjustment, but also ensuring the combustion stability, and even if the inlet water temperature is higher, meeting the user requirements.
Drawings
FIG. 1 is a flow chart of a method for reducing the minimum load of a gas water heater provided in embodiment 1 of the present invention;
fig. 2 is a specific flowchart of a method for reducing the minimum load of a gas water heater provided in embodiment 1 of the present invention.
Detailed Description
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.
Example 1
Embodiment 1 of the present invention provides a method for reducing a minimum load of a gas water heater, as shown in fig. 1-2, including the following steps:
s1, when the gas water heater is at the minimum load, the fan is at the first rotating speed, and the proportional valve is at the standard current;
s2, after the heating is continued for the first time, judging whether the water outlet temperature is not higher than the preset temperature, if so, continuing to heat, and if not, performing the next step;
and S3, collecting water production load data to calculate a real-time water production value, and adjusting the rotating speed of the fan and the current of the proportional valve according to the real-time water production value so as to reduce the minimum load.
Thus, when the gas water heater is in the minimum load, the fan is in the first rotating speed, and the proportional valve is in the standard current; after the heating is continuously carried out for the first time, judging whether the water outlet temperature is not greater than the preset temperature, if so, continuing to heat, and if not, carrying out the next step; the method comprises the steps of collecting water production load data to calculate a water production value, adjusting the rotating speed of a fan and the current of a proportional valve according to the water production value, and further reducing the minimum load, so that the influences of differences of various devices and peripheral air supply pressure are avoided, the minimum load can be intelligently adjusted and reduced, the combustion stability can be guaranteed, and the user requirements can be met even if the water inlet temperature is high.
Wherein the preset temperature is the temperature set by a user plus 2-5 ℃. For example, the preset temperature is the temperature of the user plus 2 degrees, so that the temperature of the outlet water is slightly higher than the preset temperature by a few degrees, and the bathing requirement of the user is better met.
Wherein the first time is in the order of seconds so that the gas water heater keeps burning for a few seconds at a minimum load. The water outlet temperature is more accurate.
The S3 specifically includes:
s31, collecting at least two groups of water production load data at fixed intervals and calculating the average value of real-time water production;
and S32, adjusting the rotating speed of the fan and the current of the proportional valve according to the real-time water production average value.
And adjusting the rotating speed of the fan and the current of the proportional valve according to the water production average value so as to ensure that the minimum load determined by the rotating speed of the fan and the current of the proportional valve meets the requirements of users.
Wherein, the water production load data comprises inlet water temperature, outlet water temperature and water flow.
The fixed time is in milliseconds so that multiple sets of produced water load data can be collected.
The calculation formula of the real-time water production value P is as follows:
P＝L*(Tdischarging water-TInflow water)
Wherein P is the real-time water production value, L is the water flow, TDischarging waterIs the temperature of the outlet water, TInflow waterThe temperature of the inlet water is shown.
The water inlet temperature and the water outlet temperature are collected through a temperature sensor in the gas water heater, the water flow is collected through a water flow sensor in the water heater, and therefore the real-time water production value can be calculated according to a calculation formula of the real-time water production value P.
The S32 specifically includes:
when the real-time water production average value is larger than the first water production value, reducing the first fixed value of the proportional valve current and returning to S2;
when the real-time water production average value is larger than the second water production value and smaller than the first water production value, reducing the rotating speed of the motor to a second rotating speed, reducing the current of the proportional valve to a first fixed value, judging whether flameout occurs or not, if yes, returning to S1, and if not, returning to S2;
and when the real-time water production average value is smaller than a second water production value, reducing the rotating speed of the motor to a second rotating speed, increasing the first fixed value of the current of the proportional valve and judging whether flameout occurs or not, if yes, returning to S1, and if not, returning to S2. Wherein the first water production value is greater than the second water production value, and the first rotating speed is greater than the second rotating speed.
Wherein the first fixed value is in milliampere order so as to slowly reduce the value of the proportional valve current.
Thus, when the average water production value is greater than the first water production value, the air pressure may be too high, resulting in a water production value higher than the factory standard setting, so the proportional valve current is reduced by a first fixed value (e.g., 1mA) and returned to S2; when the average water production value is larger than the second water production value and smaller than the first water production value, reducing the rotating speed of the motor to a second rotating speed, reducing the current of the proportional valve to a first fixed value, and judging whether flameout occurs or not, if yes, the external wind is probably larger at the moment, returning to S1, and if not, returning to S2; and when the average water production value is smaller than the second water production value, reducing the rotating speed of the motor to the second rotating speed, increasing the first fixed value of the proportional valve current and judging whether flameout occurs or not, if so, returning to S1 if the external wind is possibly large, and otherwise, returning to S2.
The specific working process is as follows:
the gas water heater starts the zero cold water function,
s1, when the combustion state of the water heater is at the lowest load (for example, the minimum opening degree of a 2-row proportional valve), the rotating speed of the fan is 2000r/min, and the proportional valve is standard current;
s2, keeping the load and heating for 2S, and judging TDischarging water≤TSetting up+2 ℃, if yes, keeping the load to continue heating, and if not, carrying out the next step;
s31, collecting 1 group of water production load data every 100ms, including inlet water temperature, outlet water temperature and water flow, collecting 10 groups in total to calculate the average value, and then calculating the water production value P through a calculation formula of real-time water production value: p ═ L ═ (T)Discharging water-TInflow water) Calculating a real-time water production value P;
s32, when the real-time water production value is larger than the first water production value (for example, the first water production value is 39L/min, and the water flow rate is 1L/min, the water can be heated by 39 degrees), the air pressure is possibly too large, the water production is higher than the factory standard setting, the 1mA proportional valve current is slowly adjusted and reduced, and the step returns to S2;
when the real-time water production average value is larger than the second water production value and smaller than the first water production value (for example, the first water production value is 39L/min, the second water production value is 20L/min, wherein 20L/min represents that 20 degrees can be heated when 1L/min water flow is generated), the rotating speed is reduced to 1500r/min, the current value of the 1mA proportional valve is slowly adjusted and reduced, whether flameout occurs or not is judged, if yes, the external wind is possibly large at the moment, the step returns to S1, and if not, the step returns to S2;
and when the real-time water production average value is smaller than a second water production value (for example, the second water production value is 20L/min, and the heating is performed for 20 degrees when the water flow is 1L/min), reducing the rotating speed to 1500r/min, increasing the current value of the 1mA proportional valve each time, judging whether flameout occurs, if so, returning to S1 if the external wind is possibly large, and otherwise, returning to S2.
The method for reducing the minimum load of the gas water heater adjusts the fan rotating speed and the proportional valve current of the gas water heater through the water production value, thereby avoiding the influence of difference of each device and peripheral gas supply pressure, not only intelligently adjusting and reducing the minimum load, but also ensuring the combustion stability, and even if the water inlet temperature is higher, the method can also meet the user requirements.
Example 2
The embodiment 2 of the invention also provides a gas water heater, which comprises a method for reducing the minimum load by applying the gas water heater.
According to the gas water heater, the fan rotating speed and the proportional valve current of the gas water heater are adjusted through the water production value, so that the influence of difference of each device and peripheral air supply pressure is avoided, the minimum load can be intelligently adjusted and reduced, the combustion stability can be ensured, and the user requirements can be met even if the water inlet temperature is high.
The above description is only for the 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 included in 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 method of reducing minimum load in a gas water heater, comprising the steps of:
s1, when the gas water heater is at the minimum load, the fan is at the first rotating speed, and the proportional valve is at the standard current;
s2, after the heating is continued for the first time, judging whether the water outlet temperature is not higher than the preset temperature, if so, continuing to heat, and if not, performing the next step;
and S3, collecting water production load data to calculate a real-time water production value, and adjusting the rotating speed of the fan and the current of the proportional valve according to the real-time water production value so as to reduce the minimum load.
2. The method for reducing the minimum load of a gas water heater according to claim 1, wherein the step S3 is specifically as follows:
s31, collecting at least two groups of water production load data at fixed intervals and calculating the average value of real-time water production;
and S32, adjusting the rotating speed of the fan and the current of the proportional valve according to the real-time water production average value.
3. The method for reducing the minimum load of a gas water heater according to claim 2, wherein the step S32 is specifically as follows:
when the real-time water production average value is larger than the real-time water production average value, reducing the current of the proportional valve by a first fixed value and returning to S2;
when the real-time water production average value is larger than the second water production value and smaller than the first water production value, reducing the rotating speed of the motor to a second rotating speed, reducing the current of the proportional valve to a first fixed value, judging whether flameout occurs or not, if yes, returning to S1, and if not, returning to S2;
and when the real-time water production average value is smaller than a second water production value, reducing the rotating speed of the motor to a second rotating speed, increasing the first fixed value of the current of the proportional valve and judging whether flameout occurs or not, if yes, returning to S1, and if not, returning to S2.
4. The method of reducing minimum load of a gas water heater of claim 2 or 3, wherein the water production load data includes inlet water temperature, outlet water temperature and water flow.
5. The method for reducing the minimum load of a gas water heater according to claim 4, wherein the real-time water production value P is calculated by the formula:
P＝L*(Tdischarging water-TInflow water)
Wherein P is the real-time water production value, L is the water flow, TDischarging waterIs the temperature of the outlet water, TInflow waterThe temperature of the inlet water is shown.
6. The method of reducing minimum load for a gas water heater of claim 5, wherein the first water production value is greater than the second water production value and the first rotational speed is greater than the second rotational speed.
7. A method of reducing the minimum load of a gas water heater as claimed in claim 2 or 3, wherein the preset temperature is the user set temperature plus 2-5 ℃.
8. The method of reducing minimum load for a gas water heater of claim 7, wherein said first time is on the order of seconds and said fixed time is on the order of milliseconds.
9. The method for reducing minimum load for a gas water heater of claim 7, wherein said first fixed value is in the milliamp range.
10. A gas water heater characterized in that it comprises a method for reducing the minimum load by applying a gas water heater according to any one of claims 1 to 9.
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| CN202011134101.XA CN112378089A (en) | 2020-10-21 | 2020-10-21 | Method for reducing minimum load of gas water heater and gas water heater using same |
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| CN202011134101.XA CN112378089A (en) | 2020-10-21 | 2020-10-21 | Method for reducing minimum load of gas water heater and gas water heater using same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113776199A (en) * | 2021-09-26 | 2021-12-10 | 广东万和热能科技有限公司 | Water mixing device control method for water heater, water mixing device and control device |
| CN113983694A (en) * | 2021-11-25 | 2022-01-28 | 华帝股份有限公司 | Control method for minimum load matching starting flow of gas water heater |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04203837A (en) * | 1990-11-30 | 1992-07-24 | Gastar Corp | Gas heater for supplying hot-water |
| CN206944500U (en) * | 2017-02-28 | 2018-01-30 | 芜湖美的厨卫电器制造有限公司 | Control system, gas heater and the Cloud Server of gas heater |
| CN110595075A (en) * | 2019-10-10 | 2019-12-20 | 宁波方太厨具有限公司 | Method and system for controlling outlet water temperature of gas water heater |
| CN210220210U (en) * | 2019-07-20 | 2020-03-31 | 陈雄 | Self-adaptive water heater |
| CN111059567A (en) * | 2018-10-17 | 2020-04-24 | 宁波方太厨具有限公司 | Combustion control method for reducing minimum heat load |
-
2020
- 2020-10-21 CN CN202011134101.XA patent/CN112378089A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04203837A (en) * | 1990-11-30 | 1992-07-24 | Gastar Corp | Gas heater for supplying hot-water |
| CN206944500U (en) * | 2017-02-28 | 2018-01-30 | 芜湖美的厨卫电器制造有限公司 | Control system, gas heater and the Cloud Server of gas heater |
| CN111059567A (en) * | 2018-10-17 | 2020-04-24 | 宁波方太厨具有限公司 | Combustion control method for reducing minimum heat load |
| CN210220210U (en) * | 2019-07-20 | 2020-03-31 | 陈雄 | Self-adaptive water heater |
| CN110595075A (en) * | 2019-10-10 | 2019-12-20 | 宁波方太厨具有限公司 | Method and system for controlling outlet water temperature of gas water heater |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113776199A (en) * | 2021-09-26 | 2021-12-10 | 广东万和热能科技有限公司 | Water mixing device control method for water heater, water mixing device and control device |
| CN113983694A (en) * | 2021-11-25 | 2022-01-28 | 华帝股份有限公司 | Control method for minimum load matching starting flow of gas water heater |
| CN113983694B (en) * | 2021-11-25 | 2023-06-02 | 华帝股份有限公司 | Control method for minimum load matching start flow of gas water heater |
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