CN113357821A - Control method of water heater - Google Patents
Control method of water heater Download PDFInfo
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- CN113357821A CN113357821A CN202110485282.9A CN202110485282A CN113357821A CN 113357821 A CN113357821 A CN 113357821A CN 202110485282 A CN202110485282 A CN 202110485282A CN 113357821 A CN113357821 A CN 113357821A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 222
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000009467 reduction Effects 0.000 claims description 8
- 230000006872 improvement Effects 0.000 description 10
- 230000008859 change Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001960 triggered effect Effects 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control For Baths (AREA)
Abstract
The invention provides a control method of a water heater, which comprises the following steps: step S101, the water heater enters a pressurization operation mode; step S102, detecting the pressurization flow of the water heater in a pressurization operation mode, and judging whether the pressurization flow is greater than the sum of the circulation flow and a program preset sudden drop amount; if yes, go to step S103; if not, the step S104 is executed; step S103, keeping the water heater running in a pressurization running mode; and step S104, judging water shutoff. The water pump is suitable for the condition that a plurality of users use water, and the problem that the water pump is repeatedly started and stopped due to multi-point water utilization is solved.
Description
Technical Field
The invention relates to the technical field of water heaters, in particular to a control method of a water heater.
Background
When a user closes the hot water faucet, the stored water in the pipeline circularly flows under the action of the water pump, the water heater still has a water flow signal, the water heater continuously heats the stored water until the temperature of the return water is raised to a preset temperature or the temperature of the outlet water is over-temperature protected, the pump is shut down, and a large amount of gas and electric power are wasted; when the user reopens the hot water faucet, the temperature of the discharged water is too hot, which is very easy to cause scalding accidents. The identification technology for sudden water drop of part manufacturers judges that a user turns off water when the measured water flow drop in unit time is larger than the pump turning-off identification amount during supercharging operation, and turns off a water pump in a short time. And if the water flow exists after the pump is turned off, restarting the water pump for pressurizing. However, when water is used at multiple points, large water quantity fluctuation is generated, water closing identification of a program is easily triggered, and a water pump is started and stopped repeatedly until bathing experience of a user is influenced.
Disclosure of Invention
The present invention solves, to some extent, one of the problems of the related art, and therefore the present invention is directed to a control method of a water heater,
the above purpose is realized by the following technical scheme:
a control method of a water heater comprises the following steps:
step S101, the water heater enters a pressurization operation mode;
step S102, detecting the pressurization flow of the water heater in a pressurization operation mode, and judging whether the pressurization flow is greater than the sum of the circulation flow and a program preset sudden drop amount;
if yes, go to step S103; if not, the step S104 is executed;
step S103, keeping the water heater running in a pressurization running mode;
and step S104, judging water shutoff.
As a further improvement of the present invention, in step S104, the step of performing the water shutoff judgment specifically includes:
step S201, detecting whether water flow descends in unit time;
if yes, go to step S202; if not, returning to the step S201;
step S202, detecting the water flow descending quantity;
step S203, judging whether the water flow falling amount in unit time is larger than a preset reduction amount;
if yes, go to step S204; if not, returning to the step S103;
and step S204, closing the water pump.
As a further improvement of the present invention, after the water pump is turned off in step S202, the method further includes the following steps:
step S301, detecting the current water flow;
step S302, detecting whether the current water flow is smaller than a preset shutdown flow;
if yes, go to step S303; if not, go to step S304;
step S303, flameout and shutdown are carried out, and the water heater enters a pressurization standby mode;
and step S304, the water pump is turned on again, and the water heater enters a pressurization running mode.
As a further improvement of the present invention, before step S101, the following steps are further included:
step S401, collecting circulation flow when the water heater is in a preheating operation mode;
step S402, the water heater enters a pressurization standby mode;
step S403, detecting the real-time water flow, and judging whether to enter step S101 according to the relation between the real-time water flow and the preset starting water flow.
As a further improvement of the present invention, in step S403, the step of determining whether to enter step S101 according to the relationship between the real-time water flow and the preset startup water flow specifically includes:
if the real-time water flow is larger than the preset starting-up water flow, starting up ignition, controlling a water pump to be started, and enabling the water heater to enter the step S101;
and if the real-time water flow is smaller than the preset starting water flow, keeping the water heater in a pressurization standby mode.
As a further improvement of the present invention, in step S402, the method for entering the pressurization standby mode of the water heater is as follows: the water heater enters a pressurization standby mode by pressing a pressurization key to start a pressurization function.
As a further improvement of the invention, the unit time is 5-10 s.
As a further improvement of the invention, the programmed preset overshoot and undershoot amount is 0.5-3L/min.
As a further improvement of the invention, the preset starting-up flow is 2.4-2.8L/min.
As a further improvement of the invention, the preset shutdown flow is 1.8-2.3L/min.
Compared with the prior art, the invention at least comprises the following beneficial effects:
1. the invention provides a control method of a water heater, which is suitable for the condition that a plurality of users use water and solves the problem that a water pump is repeatedly started and stopped due to multi-point water consumption.
Drawings
Fig. 1 is a flowchart of a control method of a water heater in an embodiment.
Detailed Description
The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications to the embodiments of the invention or equivalent substitutions of parts of technical features without departing from the spirit of the invention are intended to be covered by the scope of the claims of the invention.
A control method of a water heater comprises the following steps:
step S101, the water heater enters a pressurization operation mode;
step S102, detecting the real-time supercharging flow of the water heater in a supercharging operation mode, and judging whether the real-time supercharging flow is larger than the sum of the circulation flow and a program preset sudden-reduction amount;
if yes, go to step S103; if not, the step S104 is executed;
step S103, keeping the water heater running in a pressurization running mode;
and step S104, judging water shutoff.
In step S102, the programmed predetermined amount of overshoot is 0.5-3L/min.
The invention provides a control method of a water heater, which judges whether water is shut down or not by judging whether the real-time supercharging flow is larger than the sum of the circulation flow and the program preset sudden drop when the water heater enters a supercharging operation mode.
The water heater enters a shower mode, a preheating key is pressed to enable the water heater to enter a preheating operation mode, and when the water heater enters the preheating operation mode, the controller controls the water flow sensor to automatically acquire the circulating flow; when the water heater is in a preheating operation mode, a pressure increasing key is pressed, and a pressure increasing function is started to enable the water heater to enter a pressure increasing standby mode.
In this embodiment, when the real-time water flow is greater than the preset starting water flow, the starting ignition is performed, the water pump is controlled to be started, and the water heater enters a pressurization operation mode.
In step S102, when the water heater is in the preheating operation mode, the controller controls the water flow sensor to automatically collect the circulation flow, the program preset sudden-decrease amount is preset, that is, the circulation flow and the program preset sudden-decrease amount are constant values, and the real-time pressurization flow fluctuates according to the change of the number of users, the change of the water consumption of the users, and other factors.
In the prior art, whether the water flow falling amount in the unit time is larger than the preset reduction amount is judged to be closed, when the water is used by a plurality of users, the water stops being used by the users in the unit time, namely the water flow falling amount in the unit time is larger than the preset reduction amount, the water pump is closed at the moment, the water continues to be used by other users, the user experience is poor, the water pump is switched between the opening state and the closing state, and the service life of the water pump is influenced.
The control method of the water heater is suitable for the condition that a plurality of users use water, and solves the problem that the water pump is repeatedly started and stopped due to multi-point water use.
Detecting the real-time supercharging flow of the water heater in a supercharging operation mode, if the real-time supercharging flow is larger than the sum of the circulation flow and the program preset sudden drop, indicating that the water consumption is large, and indicating that a plurality of users use the water heater, keeping the water heater to operate in the supercharging operation mode; if the real-time supercharging flow is smaller than the sum of the circulating flow and the program preset sudden drop, the water consumption is reduced, and the possible reason for reducing the water consumption is the reduction of the number of water users, the adjustment of the water users from large water amount to small water amount and the like.
In step S104, the step of performing the water shutoff judgment specifically includes:
step S201, detecting whether water flow descends in unit time;
if yes, go to step S202; if not, returning to the step S201;
step S202, detecting the water flow descending quantity;
step S203, judging whether the water flow falling amount in unit time is larger than a preset reduction amount;
if yes, go to step S204; if not, returning to the step S103;
and step S204, closing the water pump.
When the real-time supercharging flow is smaller than the sum of the circulating flow and the program preset sudden drop, the water consumption is reduced, and water turning-off judgment is carried out.
For example, the water heater enters a boost mode of operation. When the water heater is in a preheating operation mode, the controller controls the water flow sensor to automatically acquire the circulating flow of 5L/min, the program preset sudden drop amount is 2L/min, and if the real-time supercharging flow of the water heater in the supercharging operation mode is detected to be 10L/min, and 10 is greater than 2+5, the water heater is kept to operate in the supercharging operation mode. And (3) changing the pressurization flow in real time, and entering water shut-off judgment when the detected real-time pressurization flow of the water heater in the pressurization operation mode is 6L/min and 6 is less than 2+ 5.
After water is turned off, detecting whether water flow is reduced in unit time, wherein the water flow is changed from 6L/min to 4L/min, namely, the water flow is reduced, detecting that the water flow reduction in unit time is 2L/min, and the preset reduction is 1L/min, and then closing the water pump; and if the water flow falling amount in unit time is detected to be 0.5L/min, the water heater is kept to operate in a pressurization operation mode.
If the real-time supercharging flow is smaller than the sum of the circulating flow and the program preset sudden drop amount, the water consumption is reduced, the water is shut down, after the water is shut down, the water amount is obviously reduced in unit time, and the condition that a plurality of users shut down water simultaneously or a plurality of users reduce the water amount simultaneously in unit time is indicated.
In step S203, the unit time is 5-10S.
The method also comprises the following steps after the water pump is turned off in the step S204:
step S301, detecting the current water flow;
step S302, detecting whether the current water flow is smaller than a preset shutdown flow;
if yes, go to step S303; if not, go to step S304;
step S303, flameout and shutdown are carried out, and the water heater enters a pressurization standby mode;
and step S304, the water pump is turned on again, and the water heater enters a pressurization running mode.
Although the water pump is turned off in step S204, the supercharging operation mode is not completely exited and the supercharging standby mode is switched. Detecting the current water flow, comparing the current water flow with the preset shutdown flow, if the current water flow is larger than the preset shutdown flow, showing that the water is still used by a user even though the water amount is obviously reduced in unit time, and at the moment, newly starting the water pump, and enabling the water heater to enter a pressurization operation mode; if the water flow is smaller than the preset shutdown flow, the water quantity is obviously reduced within the water level time, and no water is used by the user, the water heater is shut down when the water heater is shut down, and the water heater enters a pressurization standby mode.
In step S302, the preset shutdown flow rate is 1.8 to 2.3L/min. In this embodiment, the preset shutdown flow rate is 2.0L/min.
The following steps are also included before step S101:
step S401, collecting circulation flow when the water heater is in a preheating operation mode;
step S402, the water heater enters a pressurization standby mode;
step S403, detecting the real-time water flow, and judging whether to enter step S101 according to the relation between the real-time water flow and the preset starting water flow.
The method for entering step S402 in step S401 is: when the water heater is in a preheating operation mode, a pressure increasing key is pressed, and a pressure increasing function is started to enable the water heater to enter a pressure increasing standby mode.
In step S403, it is determined whether to enter the supercharging operation mode according to the relationship between the real-time water flow and the preset startup water flow. Intelligent control and intelligent switching.
In step S402, the method for the water heater to enter the pressurization standby mode includes: the water heater enters a pressurization standby mode by pressing a pressurization key to start a pressurization function.
In step S403, the preset boot flow is 2.4-2.8L/min. In this embodiment, the preset boot flow is 2.5L/min. The preset startup flow is larger than the preset shutdown flow, so that the switching back and forth between entering the supercharging operation mode and exiting the supercharging operation mode is avoided, namely, the switching back and forth between the supercharging operation mode and the supercharging standby mode is avoided.
In step S403, the step of determining whether to enter step S101 according to the relationship between the real-time water flow and the preset startup water flow specifically includes:
if the real-time water flow is larger than the preset starting-up water flow, starting up ignition, controlling a water pump to be started, and enabling the water heater to enter the step S101;
and if the real-time water flow is smaller than the preset starting water flow, keeping the water heater in a pressurization standby mode.
The above preferred embodiments should be considered as examples of the embodiments of the present application, and technical deductions, substitutions, improvements and the like similar to, similar to or based on the embodiments of the present application should be considered as the protection scope of the present patent.
Claims (10)
1. A control method of a water heater is characterized by comprising the following steps:
step S101, the water heater enters a pressurization operation mode;
step S102, detecting the pressurization flow of the water heater in a pressurization operation mode, and judging whether the pressurization flow is greater than the sum of the circulation flow and a program preset sudden drop amount;
if yes, go to step S103; if not, the step S104 is executed;
step S103, keeping the water heater running in a pressurization running mode;
and step S104, judging water shutoff.
2. The method for controlling a water heater according to claim 1, wherein in step S104, the step of performing the water-off judgment specifically comprises:
step S201, detecting whether water flow descends in unit time;
if yes, go to step S202; if not, returning to the step S201;
step S202, detecting the water flow descending quantity;
step S203, judging whether the water flow falling amount in unit time is larger than a preset reduction amount;
if yes, go to step S204; if not, returning to the step S103;
and step S204, closing the water pump.
3. The control method of the water heater according to claim 2, further comprising the following steps after turning off the water pump in step S204:
step S301, detecting the current water flow;
step S302, detecting whether the current water flow is smaller than a preset shutdown flow;
if yes, go to step S303; if not, go to step S304;
step S303, flameout and shutdown are carried out, and the water heater enters a pressurization standby mode;
and step S304, the water pump is turned on again, and the water heater enters a pressurization running mode.
4. The control method of the water heater according to claim 1, further comprising the following steps before the step S101:
step S401, collecting circulation flow when the water heater is in a preheating operation mode;
step S402, the water heater enters a pressurization standby mode;
step S403, detecting the real-time water flow, and judging whether to enter step S101 according to the relation between the real-time water flow and the preset starting water flow.
5. The method as claimed in claim 4, wherein in step S403, the step of determining whether to enter step S101 according to the relationship between the real-time water flow and the preset startup water flow is specifically:
if the real-time water flow is larger than the preset starting-up water flow, starting up ignition, controlling a water pump to be started, and enabling the water heater to enter the step S101;
and if the real-time water flow is smaller than the preset starting water flow, keeping the water heater in a pressurization standby mode.
6. The method as claimed in claim 4, wherein in step S402, the method for entering the water heater to the pressurization standby mode comprises:
the water heater enters a pressurization standby mode by pressing a pressurization key to start a pressurization function.
7. The control method of a water heater as claimed in claim 2, wherein the unit time is 5-10 s.
8. The control method of a water heater as claimed in claim 2, wherein the programmed predetermined amount of overshoot and undershoot is 0.5-3L/min.
9. The control method of the water heater according to claim 4, wherein the preset starting-up flow is 2.4-2.8L/min.
10. The control method of the water heater according to claim 3, wherein the preset shutdown flow rate is 1.8-2.3L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110485282.9A CN113357821A (en) | 2021-04-30 | 2021-04-30 | Control method of water heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110485282.9A CN113357821A (en) | 2021-04-30 | 2021-04-30 | Control method of water heater |
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| CN113357821A true CN113357821A (en) | 2021-09-07 |
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| CN202110485282.9A Pending CN113357821A (en) | 2021-04-30 | 2021-04-30 | Control method of water heater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754499A (en) * | 2022-02-22 | 2022-07-15 | 重庆海尔热水器有限公司 | Gas water heater, control method of booster pump of gas water heater and readable storage medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449134A (en) * | 2017-09-26 | 2017-12-08 | 广东万家乐燃气具有限公司 | Central hot water gas heater and its application system and control method |
| CN110806013A (en) * | 2019-11-08 | 2020-02-18 | 华帝股份有限公司 | Control method of zero-cold-water gas water heater and zero-cold-water gas water heater |
| CN110986373A (en) * | 2019-11-18 | 2020-04-10 | 华帝股份有限公司 | Intelligent supercharged gas water heater and control method |
| CN111397200A (en) * | 2019-01-02 | 2020-07-10 | 芜湖美的厨卫电器制造有限公司 | Gas water heater |
| CN111720999A (en) * | 2020-05-21 | 2020-09-29 | 华帝股份有限公司 | Circulating current-limiting zero-cold-water gas water heater and preheating and pressurizing control method |
| CN112361611A (en) * | 2020-11-05 | 2021-02-12 | 珠海格力电器股份有限公司 | Gas water heater control method, device and system and gas water heater |
| CN112393432A (en) * | 2020-10-09 | 2021-02-23 | 华帝股份有限公司 | Intelligent automatic pressurization control method for water heater |
-
2021
- 2021-04-30 CN CN202110485282.9A patent/CN113357821A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449134A (en) * | 2017-09-26 | 2017-12-08 | 广东万家乐燃气具有限公司 | Central hot water gas heater and its application system and control method |
| CN111397200A (en) * | 2019-01-02 | 2020-07-10 | 芜湖美的厨卫电器制造有限公司 | Gas water heater |
| CN110806013A (en) * | 2019-11-08 | 2020-02-18 | 华帝股份有限公司 | Control method of zero-cold-water gas water heater and zero-cold-water gas water heater |
| CN110986373A (en) * | 2019-11-18 | 2020-04-10 | 华帝股份有限公司 | Intelligent supercharged gas water heater and control method |
| CN111720999A (en) * | 2020-05-21 | 2020-09-29 | 华帝股份有限公司 | Circulating current-limiting zero-cold-water gas water heater and preheating and pressurizing control method |
| CN112393432A (en) * | 2020-10-09 | 2021-02-23 | 华帝股份有限公司 | Intelligent automatic pressurization control method for water heater |
| CN112361611A (en) * | 2020-11-05 | 2021-02-12 | 珠海格力电器股份有限公司 | Gas water heater control method, device and system and gas water heater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754499A (en) * | 2022-02-22 | 2022-07-15 | 重庆海尔热水器有限公司 | Gas water heater, control method of booster pump of gas water heater and readable storage medium |
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Application publication date: 20210907 |