CN110207390B - Shutdown control method for gas water heater - Google Patents
Shutdown control method for gas water heater Download PDFInfo
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- CN110207390B CN110207390B CN201811259602.3A CN201811259602A CN110207390B CN 110207390 B CN110207390 B CN 110207390B CN 201811259602 A CN201811259602 A CN 201811259602A CN 110207390 B CN110207390 B CN 110207390B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 366
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000007423 decrease Effects 0.000 claims description 12
- 239000008399 tap water Substances 0.000 claims description 4
- 235000020679 tap water Nutrition 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000003287 bathing Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material 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 shutdown control method for a gas water heater, wherein a water outlet pipeline of the gas water heater is connected with a water return pipeline of the gas water heater through a first three-way valve to form a circulating pipeline, a water inlet pipeline is connected to the circulating pipeline through a second three-way valve, and one or more water using devices are arranged on the water outlet pipeline and the water inlet pipeline; according to the invention, after the water utilization equipment is determined to be closed by a user according to the change condition of the water flow in the water inlet pipeline, the water pump is closed, and then whether the gas water heater is closed or not is determined according to the condition of the water flow in the water outlet pipeline, so that the intelligent shutdown control of the water heater is realized, and the inconvenience caused by misoperation is avoided due to double judgment.
Description
Technical Field
The invention belongs to the technical field of gas water heaters, and particularly relates to a shutdown control method for a gas water heater.
Background
The zero-cold-water gas water heater is characterized in that a zero-cold-water function is started under the condition that no water is boiled, a water pump in the water heater is started, after the water pump is started, hot water in a hot water pipeline flows up and flows out through a water outlet pipe of the water heater, the outflow water flows back to the water heater through a water return pipeline to form a circulating pipeline, after a water flow signal is detected by the water heater, combustion heating is started, after 3-5 minutes, all water in the whole circulating pipeline can be heated to a set temperature, when a user bathes, hot water exists in a shower head, cold water cannot flow out firstly, namely zero cold water; in order to improve the bathing experience, generally can increase the pressure boost function, however, because the user opens behind the pressure boost function, the water pump can start, even the user closes tap, because the water pump is in the on-state this moment, the water heater still can detect discharge, consequently can't judge whether the user closes water.
Disclosure of Invention
The invention aims to provide a shutdown control method for a gas water heater, which can intelligently identify whether a user shuts off water or not, further timely shuts down the gas water heater and avoids energy waste.
The technical scheme adopted by the invention is as follows:
a shutdown control method for a gas water heater is characterized in that a water outlet pipeline of the gas water heater is connected with a water return pipeline of the gas water heater through a first three-way valve to form a circulating pipeline, a water inlet pipeline of the gas water heater is connected to the circulating pipeline through a second three-way valve, and one or more water-using devices are arranged on the water outlet pipeline and the water inlet pipeline;
starting at least one water using device, starting a water pump of the gas water heater, supplying tap water to the water using device through a water inlet pipeline, and supplying hot water heated by the gas water heater to the water using device through a water outlet pipeline; continuously acquiring water flow data groups of a plurality of groups of water inlet pipelines in real time, and determining whether water flow continuously decreases or not according to the size relationship among the water flow data groups; when the water flow is determined to continuously decrease, acquiring the current water flow of a water inlet pipeline, and determining whether water consuming equipment is closed or not according to the relation between the current water flow and a first group of water flow data group in a plurality of groups of water flow data groups; and when the water utilization equipment is determined to be closed, closing a water pump of the gas water heater, and determining whether to close the gas water heater according to the water flow in the water outlet pipeline.
The invention is also characterized in that:
the plurality of groups of water flow data sets comprise at least 10 groups of A (1), A (2) and A (3) … … A (n), wherein n is more than or equal to 10, and A (1) is a water flow data set acquired for the first time.
Each group of the water flow data set comprises at least 10 water flow values, namely a (1), a (2) a (3) … … a (m), wherein m is more than or equal to 10, and a (1) is a water flow value acquired for the first time.
And any one of the water flow data sets in the plurality of water flow data sets comprises all the water flow values after the 2 nd water flow value in the previous water flow data set and the currently acquired water flow value.
The method for determining whether the water flow continuously decreases according to the size relationship among a plurality of groups of water flow data groups collected in real time specifically comprises the following steps: determining that the water flow rate continuously decreases when sum (1) < sum (2) < sum (3) … … sum (n); otherwise, the water flow is not continuously reduced, and the water flow data set of the water inlet pipeline (3) is continuously collected;
wherein sum (1) is the sum of all water flow values in the water flow data set A (1), and sum (2) is the sum … … sum (n) of all water flow values in the water flow data set A (2), and is the sum of all water flow values in the water flow data set A (n).
The step of determining whether the water consuming equipment is closed or not according to the relationship between the current water flow and the plurality of water flow data sets specifically comprises the following steps:
when the current water flow L' < sum (1)/m-1, reducing the water flow by at least 1L/min, and determining that the user turns off the water using equipment; whereas water-using devices are in use.
Whether the gas water heater is turned off or not is determined according to the condition of the water flow in the water outlet pipeline, and the method specifically comprises the following steps:
when the water flow is smaller than the flow threshold value, the gas water heater is turned off; and when the water flow is more than or equal to the flow threshold value, the gas water heater continues to work.
When water flow is more than or equal to the flow threshold, the gas heater continues to work, afterwards, still include: and when the temperature of the water inlet pipeline acquired in real time is less than the temperature threshold value, the water pump is restarted.
The temperature threshold is Ts-M, wherein Ts is the set temperature of the gas water heater, and M is more than 2 and less than 5.
The water flow rate values are collected every 20ms interval.
Compared with the prior art, the intelligent shutdown control method has the advantages that the water shutdown of the user is determined according to the change condition of the water flow in the water inlet pipeline, the water pump is further turned off, and then whether the gas water heater is turned off or not is determined according to the water flow condition in the water outlet pipeline, so that the intelligent shutdown control of the water heater is realized, the double judgment is realized, and the inconvenience caused by misoperation is avoided.
Drawings
Fig. 1 is a schematic diagram of a gas water heater circulation pipeline in an intelligent shutdown control method for a gas water heater according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following 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.
Embodiment 1 of the present invention provides a shutdown control method for a gas water heater, as shown in fig. 1, a water outlet pipeline 2 of the gas water heater is connected with a water return pipeline 4 of the gas water heater through a first three-way valve 1 to form a circulation pipeline, a water inlet pipeline 3 of the gas water heater is connected to the circulation pipeline through a second three-way valve 5, and one or more water-using devices 6 are arranged on the water outlet pipeline 2 and the water inlet pipeline 3; the method specifically comprises the following steps:
step 1, starting at least one water using device 6, starting a water pump of a gas water heater, supplying tap water to the water using device 6 through a water inlet pipeline 3, and supplying hot water heated by the gas water heater to the water using device 6 through a water outlet pipeline 2; continuously acquiring water flow data groups of a plurality of groups of water inlet pipelines 3 in real time, wherein the water flow data groups are A (1), A (2) and A (3) … … A (n), n is more than or equal to 10, and A (1) is a water flow data group acquired for the first time;
each water flow data set comprises at least 10 water flow values which are a (1), a (2) a (3) … … a (m), wherein m is more than or equal to 10, and a (1) is a water flow value acquired for the first time;
any one group of water flow data groups in the plurality of groups of water flow data groups comprises all water flow values after the 2 nd water flow value in the previous group of water flow data groups and the currently acquired water flow value;
wherein sum (1) is the sum of all water flow values in the water flow data set A (1), and sum (2) is the sum … … sum (n) of all water flow values in the water flow data set A (2), and is the sum of all water flow values in the water flow data set A (n);
when the current water flow L' < sum (1)/m-1, reducing the water flow by at least 1L/min, determining that the water utilization equipment 6 is closed, and then closing a water pump of the gas water heater; otherwise, determining that the user is using the water utilization equipment 6, maintaining the starting state of the water pump, and continuing to work the gas water heater;
when the water flow is smaller than the flow threshold value, the gas water heater is turned off; otherwise, the gas water heater continues to work, and then, the method further comprises the following steps: and when the temperature of the inlet water acquired in real time is less than a temperature threshold value, restarting the water pump, wherein the temperature threshold value is Ts-M, the Ts is the set temperature of the gas water heater, and M is more than 2 and less than 5.
In addition, the water flow rate values are collected every 20ms interval.
step 1, starting at least one water using device 6, starting a water pump of a gas water heater, supplying tap water to the water using device 6 through a water inlet pipeline 3, and supplying hot water heated by the gas water heater to the water using device 6 through a water outlet pipeline 2; continuously acquiring water flow data groups of a plurality of groups of water inlet pipelines 3 in real time, wherein the water flow data groups are A (1), A (2) and A (3) … … A (10), and A (1) is a water flow data group acquired for the first time;
each water flow data set comprises 10 water flow values, namely a (1) and a (2) a (3) … … a (10), wherein a (1) is the water flow value acquired for the first time, and any one water flow data set in the water flow data set comprises all the water flow values after the 2 nd in the previous water flow data set and the currently acquired water flow value;
wherein sum (1) is the sum of all water flow values in the water flow data set A (1), and sum (2) is the sum … … sum (10) of all water flow values in the water flow data set A (2) is the sum of all water flow values in the water flow data set A (10);
According to the invention, the water is turned off by the user according to the change condition of the water flow in the water inlet pipeline, the water pump is further turned off, and then whether the gas water heater is turned off or not is determined according to the water flow condition in the water outlet pipeline, so that the intelligent shutdown control of the water heater is realized, and the inconvenience caused by misoperation is avoided due to double judgment.
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 also 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 (9)
1. A shutdown control method for a gas water heater is characterized in that a water outlet pipeline (2) of the gas water heater is connected with a water return pipeline (4) of the gas water heater through a first three-way valve (1) to form a circulating pipeline, a water inlet pipeline (3) of the gas water heater is connected to the circulating pipeline through a second three-way valve (5), and one or more water utilization devices (6) are arranged on the water outlet pipeline (2) and the water inlet pipeline (3);
the method is characterized in that at least any one water using device (6) is started, a water pump of the gas water heater is started, tap water supplies water to the water using device (6) through a water inlet pipeline (3), and hot water heated by the gas water heater supplies water to the water using device (6) through a water outlet pipeline (2); continuously acquiring water flow data groups of a plurality of groups of water inlet pipelines (3) in real time, and determining whether water flow continuously decreases or not according to the size relationship among the water flow data groups; when the water flow is determined to continuously decrease, acquiring the current water flow of the water inlet pipeline (3), and determining whether the water utilization equipment (6) is closed or not according to the relation between the current water flow and a first group of water flow data group in a plurality of groups of water flow data groups; when the water using equipment (6) is determined to be closed, the water pump of the gas water heater is closed, and whether the gas water heater is closed or not is determined according to the condition of the water flow in the water outlet pipeline (2);
the step of determining whether the water consumption equipment (6) is closed or not according to the relationship between the current water flow and a first group of water flow data groups in the plurality of groups of water flow data groups comprises the following specific steps:
when the current water flow L' < sum (1)/m-1, reducing the water flow by at least 1L/min, and determining that the user turns off the water using equipment (6); whereas the water-consuming equipment (6) is in use;
sum (1) is the sum of all water flow values in a water flow data set A (1), A (1) is a water flow data set acquired for the first time, n is the number of the acquired water flow data sets, and m is the number of the water flow values included in the water flow data set A (1).
2. The shutdown control method for the gas water heater according to claim 1, wherein the plurality of sets of water flow data sets include at least 10 sets, respectively A (1), A (2), A (3) … … A (n), wherein n is greater than or equal to 10, and A (1) is the first collected water flow data set.
3. The shut-down control method for a gas water heater according to claim 2, wherein each set of water flow data sets comprises at least 10 water flow values, a (1), a (2) a (3) … … a (m), respectively, wherein m ≧ 10, and a (1) is the first collected water flow value.
4. The shut-down control method for a gas water heater according to claim 3, wherein any one of the plurality of sets of water flow data sets includes all water flow values after the 2 nd and the currently collected water flow values of the previous set of water flow data sets.
5. The shutdown control method for the gas water heater according to claim 4, wherein the determining whether the water flow rate is continuously decreased according to the size relationship among the plurality of water flow rate data sets is specifically: determining that the water flow rate continuously decreases when sum (1) < sum (2) < sum (3) … … sum (n); otherwise, the water flow is not continuously reduced, and the water flow data set of the water inlet pipeline (3) is continuously collected;
wherein sum (1) is the sum of all water flow values in the water flow data set A (1), and sum (2) is the sum … … sum (n) of all water flow values in the water flow data set A (2), and is the sum of all water flow values in the water flow data set A (n).
6. The shutdown control method for a gas water heater according to claim 5, wherein the determination of whether to shut down the gas water heater is based on the water flow in the water outlet pipeline (2), specifically:
when the water flow is smaller than the flow threshold value, the gas water heater is turned off; and when the water flow is more than or equal to the flow threshold value, the gas water heater continues to work.
7. The shutdown control method for the gas water heater according to claim 6, wherein when the water flow is greater than or equal to a flow threshold value, the gas water heater continues to operate, and then, the method further comprises: and when the temperature of the water inlet pipeline (3) acquired in real time is less than the temperature threshold value, the water pump is restarted.
8. The shutdown control method for a gas water heater according to claim 7, wherein the temperature threshold is Ts-M, where Ts is a gas water heater set temperature, 2 < M < 5.
9. A shutdown control method for a gas water heater according to any one of claims 3-8, characterized in that the water flow rate values are collected every 20ms interval.
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| CN201811259602.3A CN110207390B (en) | 2018-10-26 | 2018-10-26 | Shutdown control method for gas water heater |
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| CN201811259602.3A CN110207390B (en) | 2018-10-26 | 2018-10-26 | Shutdown control method for gas water heater |
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| CN110207390B true CN110207390B (en) | 2021-07-09 |
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| CN113126555A (en) * | 2019-12-31 | 2021-07-16 | 青岛海尔滚筒洗衣机有限公司 | Internet of things control method of gas equipment and gas system |
| CN111486502B (en) * | 2020-04-17 | 2021-09-07 | 海信(广东)厨卫系统有限公司 | Water supply system and control method thereof |
| CN113865111A (en) * | 2021-10-27 | 2021-12-31 | 华帝股份有限公司 | Control method for pressurization function of gas water heater |
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| CN110207390A (en) | 2019-09-06 |
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