CN111256370B - Water heater control method capable of resisting self-starting - Google Patents
Water heater control method capable of resisting self-starting Download PDFInfo
- Publication number
- CN111256370B CN111256370B CN201811452384.5A CN201811452384A CN111256370B CN 111256370 B CN111256370 B CN 111256370B CN 201811452384 A CN201811452384 A CN 201811452384A CN 111256370 B CN111256370 B CN 111256370B
- Authority
- CN
- China
- Prior art keywords
- time
- water heater
- delay time
- control method
- self
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- 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)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
A self-starting resistant water heater control method is characterized by comprising the following steps: (1) standby; (2) judging whether t exceeds a set Ts, if so, circulating the step; if not, executing the next step; (3) taking the current t as sample time Ti, and adding 1 to the number n of samples; (4) judging whether N is more than or equal to N, if so, executing the next step; if not, returning to the step (2); (5) calculating by a clustering algorithm to obtain the class Ct with the largest quantity; (6) taking the maximum time in the Ct as Td; (7) judging whether the variation of Td for m times is less than Tmin, if so, turning to the step (9); if not, executing the next step; (8) removing the farthest time point, subtracting 1 from the number n of samples, and returning to the step (2); (9) the maximum value of Td is taken as the system final TT 0. The invention has the advantages that: according to the increase of the number of samples, the delay time parameters in the system are updated in real time, and meanwhile, the optimal boiling water delay time in the actual use process can be searched by adopting the clustering algorithm principle, so that the hot water performance is ensured, and the probability of false start is reduced.
Description
Technical Field
The invention relates to water heater equipment, in particular to a self-starting resistant water heater control method.
Background
In the prior art, a water flow signal is mostly adopted by a household gas water heater as a starting signal of the water heater, the water heater is started when the detected water flow is larger than a set flow value, and the water heater is closed when the detected water flow is smaller than the set flow value, however, in the actual use process, part of families have unreasonable arrangement of water pipes, and when cold water is boiled or a toilet bowl device is used, the change of the water pressure of a hot water pipeline can be brought, so that the detected water flow and the water flow signal can last for different time according to different pipelines, finally the false operation of the water heater is caused, and the phenomenon of self-starting of the traditional water heater can bring much inconvenience to users.
In the prior art, in order to prevent the water heater from being started automatically, a common method is to set a boiling water delay time, and start the water heater after a water flow signal is kept for a period of time, so as to ensure that the water heater is not started by mistake. For example, the existing Chinese patent invention 'water heater' with patent number ZL201210529781.4 discloses a water heater structure for preventing self-starting: the water flow control device comprises a water inlet pipe, a water flow switch, a heater, a water outlet pipe and a delay module, wherein the heater is used for heating water, the water flow switch is used for starting the heater when the water flow speed reaches a preset threshold value, and the heater is closed when the water flow speed is lower than the preset threshold value; the time delay module is used for starting timing when the water flow switch is turned off and resetting when the water flow switch is turned on; the water flow valve is used for starting the heater when the water flow reaches a preset threshold value and the time delay module times to reach preset time after the water flow valve is closed.
The existing boiled water delay method limits the time interval from each time the water heater is closed to the next time the water heater is started, a user closes the water faucet in the process of releasing hot water and then immediately opens the water faucet, and when the time difference does not reach the preset time, the water flow switch does not start the heater but releases residual hot water in the pipeline. However, the delay time adopted by the existing boiled water delay mode is a fixed value, namely the delay time is a preset fixed value, so that the delay time is not guaranteed to be suitable for different household pipelines, the possibility of over-short delay time of part of households exists, and the self-starting phenomenon still occurs; or the possibility of overlong delay time of part of families exists, the hot water performance is greatly sacrificed, and the use comfort of users is influenced.
Therefore, the boiled water delay time of different families and the boiled water habits of users have a large relationship with the design of household pipelines, and in order to ensure that the water heaters in the families of the users are not frequently started by mistake and ensure the hot water performance of the gas water heaters, a method capable of performing self-adaptive adjustment according to the water consumption conditions of different families needs to be designed, so that the optimal delay time is found.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a control method of a water heater with an anti-self-starting function, which can effectively prevent malfunction and ensure hot water performance, in view of the current state of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: 1. a control method of a self-starting resistant water heater is characterized by comprising the following steps:
(1) powering on, and keeping the water heater in a standby state;
(2) judging whether the water flow duration time t exceeds a set delay time threshold Ts, if so, circulating the step; if not, executing the next step;
(3) recording the water flow duration t as a sample time Ti, and adding 1 to the number n of samples, wherein n is an integer greater than or equal to 0;
(4) judging whether the number N of the samples is more than or equal to the set sampling number N, if so, executing the next step; if not, returning to the step (2);
(5) calculating the recorded sample by adopting a clustering algorithm to obtain a class with the largest number in sample time Ti, and recording the class as Ct;
(6) taking the maximum time in the Ct class with the maximum number of samples as the measured delay time Td;
(7) judging whether variation of the continuous m-time delay time Td is smaller than a set variation threshold Tmin, if so, turning to the step (9); if not, executing the next step;
(8) removing the time point farthest from the time delay Td in the sample, reserving other sample data, subtracting 1 from the number n of the samples, and returning to the step (2);
(9) and taking the maximum value of the delay time Td measured m times continuously, wherein the maximum value is the final delay time TT0 of the system.
Preferably, the clustering algorithm may adopt a K-means clustering algorithm. The K-means clustering algorithm is simple and easy to implement, and can meet the calculation requirements and conditions of an embedded control system.
Preferably, the Ts value ranges from 1.5s to 2.5 s. The preset startup delay time Ts is not set too small, the Ts is too small and is easy to malfunction, and the Ts is too large, so that the hot water outlet performance is greatly influenced, and the switch delay significance is lost.
Preferably, the sampling number N ranges from 80 to 120. The value of N is set to be in the range, so that the operation and the operation of the control system are facilitated, if the sampling quantity is too small, the rule cannot be identified through a clustering algorithm, and if the sampling quantity is too large, the cost and the time of software operation can be increased.
Preferably, m is selected from 3 to 8 times. If m is too small, the obtained detection result is not accurate enough, and if m is too large, the calculation amount is increased, and further the design cost and the calculation time are increased.
Preferably, the value of the set variation threshold Tmin ranges from 0.1s to 0.5 s. The Tmin value is not suitable to be too large or too small, and if the Tmin value is too small, the convergence effect cannot be achieved, so that the final delay time cannot be determined; if Tmin is too large, the finally obtained delay time is not accurate enough, the precision of a test result is influenced, and the reliability of equipment is influenced finally.
Compared with the prior art, the invention has the advantages that: according to the increase of the number of samples, the delay time parameters in the system are updated in real time, meanwhile, the clustering algorithm principle is adopted, the optimal boiling water delay time in the actual use process can be searched, the original preset boiling water delay time leaving the factory is automatically corrected, the hot water performance of normal use of a user is guaranteed, meanwhile, the probability of false start of the system is reduced, and the user experience and comfort are improved.
Drawings
Fig. 1 is a flowchart of a water heater control method according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The traditional water heater is generally provided with a water flow detection sensor, and the water flow detection sensor is used for detecting the water flow to control the opening and closing of the water heater. According to the starting logic of the existing water heater, when the water flow detection sensor detects that the water flow is more than or equal to 2.5L/min, the water heater is started, and when the water flow detection sensor detects that the water flow is less than or equal to 2.0L/min, the water heater is closed. When water pressure fluctuates or other equipment is used to cause water flow change, the starting mode can easily cause the false starting of the water heater, and therefore, the conventional water heater usually adopts a mode of prolonging the starting time to prevent the false starting. However, the startup delay time is generally set uniformly and fixed before the factory shipment, and cannot be adjusted according to the actual use condition of each user home, so that inconvenience and various problems still occur in actual use.
As shown in fig. 1, the present embodiment discloses a self-starting resistant water heater control method, which can implement adaptive adjustment of startup delay time, and includes the following steps:
(1) and when the water heater is powered on, the water heater is in a standby state.
(2) Detecting water flow by a water flow sensor, judging whether the water flow duration time t exceeds a set delay time threshold Ts when water flow is detected, and if yes, circulating the step; if not, executing the next step; the method comprises the steps that Ts is a preset maximum delay time inside a system, and if the duration time of water flow exceeds the delay time Ts, a user can be considered to normally use equipment needing to be heated by a water heater and does not collect a time sample;
the value range of Ts is preferably 1.5s to 2.5s, the value of Ts cannot be too small, generally, Ts is larger than the preset startup delay time when the equipment leaves a factory, but the value of Ts cannot be too large, otherwise, the final delay time of the system obtained through calculation is too large, so that the hot water performance is greatly sacrificed, and therefore, only a sample with the startup delay time not higher than 2.5 seconds is extracted in the embodiment.
(3) And recording the starting time t as sample time Ti, and adding 1 to the number n of samples, wherein the initial value of n is 0, and the value of n is an integer greater than or equal to 0.
(4) Judging whether the number N of the samples is more than or equal to the set sampling number N, if so, executing the next step; if not, returning to the step (2); the value range of the sampling number N in this embodiment is preferably set to 80-120, the calculation efficiency is reduced when the sampling number N is too large, and the accuracy of the analysis result is affected by the rule that data cannot be acquired when the sampling number N is too small.
(5) Calculating the recorded sample by adopting a clustering algorithm to obtain a class with the largest number in sample time Ti, and recording the class as Ct; considering that the embodiment adopts an embedded control system, in order to improve the operation efficiency, the clustering algorithm of the embodiment specifically adopts a K-means clustering algorithm, the operation is relatively simple, and the calculation conditions and requirements of the embedded system can be met.
(6) Taking the maximum time in the Ct class with the largest number of samples as the delay time Td measured after actual operation;
(7) in order to ensure the stability of the measured result and avoid errors and interference influence, judging whether the variation of the continuous m-time delay time Td is smaller than a set variation threshold Tmin, wherein the value range of m is 3-8 times, and if so, turning to the step (9); if not, executing the next step; the value range of the set change threshold Tmin is 0.1 s-0.5 s, if the delay time Td measured for m consecutive times is within the range of the set change threshold Tmin, the test result tends to be stable, if the fluctuation of the delay time Td in m consecutive times is large, the test result is influenced by error or other factors in the test process, the interference items are removed, and after sampling and analyzing for multiple times, stable data is taken as the final test result.
(8) In order to further improve the precision and accuracy of the test, removing the time point which is farthest away from the time delay Td in the sample, considering the time which is farthest away from the time concentration area as invalid, reserving other sample data to ensure that the sample data is more and more concentrated, calculating the time concentration area to be more and more accurate, simultaneously, reducing the number n of the samples by 1, returning to the step (2), and continuously acquiring new sample data;
(9) the boiling water delay time Td within the range of the set change threshold Tmin for m times is taken, the maximum value is read, the maximum value is the final delay time TT0 of the system, and the new delay time TT0 is taken as the optimal start-up delay time of the water heater every time a user starts the water heater, so that the problem of hot water performance loss or misoperation caused by the fact that the original factory-set delay time does not accord with the actual use environment can be effectively solved, and the use comfort is improved.
In the embodiment, a clustering algorithm theory is combined, and an aggregation point between samples is searched according to a boiled water delay time sample detected in real time, so that the optimal delay time is calculated in the aggregation point, the optimal startup delay time which is in accordance with the use habit of a user and is suitable for the use environment of the user can be customized for users, the intelligent degree of equipment is enhanced, the normal use hot water performance of the user is ensured, and the use experience of the user is improved.
Claims (6)
1. A control method of a self-starting resistant water heater is characterized by comprising the following steps:
(1) powering on, and keeping the water heater in a standby state;
(2) judging whether the water flow duration time t exceeds a set delay time threshold Ts, if so, circulating the step; if not, executing the next step;
(3) recording the water flow duration t as a sample time Ti, and adding 1 to the number n of samples, wherein n is an integer greater than or equal to 0;
(4) judging whether the number N of the samples is more than or equal to the set sampling number N, if so, executing the next step; if not, returning to the step (2);
(5) calculating the recorded sample by adopting a clustering algorithm to obtain a class with the largest number in sample time Ti, and recording the class as Ct;
(6) taking the maximum time in the Ct class with the maximum number of samples as the measured delay time Td;
(7) judging whether variation of the continuous m-time delay time Td is smaller than a set variation threshold Tmin, if so, turning to the step (9); if not, executing the next step;
(8) removing the time point farthest from the time delay Td in the sample, reserving other sample data, subtracting 1 from the number n of the samples, and returning to the step (2);
(9) and taking the maximum value of the delay time Td measured m times continuously, wherein the maximum value is the final delay time TT0 of the system.
2. The self-starting resistant water heater control method according to claim 1, characterized in that: the clustering algorithm adopts a K-means clustering algorithm.
3. The self-starting resistant water heater control method according to claim 1, characterized in that: the value range of Ts is 1.5 s-2.5 s.
4. The self-starting resistant water heater control method according to claim 1, characterized in that: the sampling number N ranges from 80 to 120.
5. The self-starting resistant water heater control method according to claim 1, characterized in that: the value range of m is 3-8 times.
6. The self-starting resistant water heater control method according to claim 1, characterized in that: the value range of the set change threshold Tmin is 0.1 s-0.5 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811452384.5A CN111256370B (en) | 2018-11-30 | 2018-11-30 | Water heater control method capable of resisting self-starting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811452384.5A CN111256370B (en) | 2018-11-30 | 2018-11-30 | Water heater control method capable of resisting self-starting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111256370A CN111256370A (en) | 2020-06-09 |
| CN111256370B true CN111256370B (en) | 2021-06-15 |
Family
ID=70946470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811452384.5A Active CN111256370B (en) | 2018-11-30 | 2018-11-30 | Water heater control method capable of resisting self-starting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111256370B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116221969A (en) * | 2021-08-24 | 2023-06-06 | 佛山市顺德区美的饮水机制造有限公司 | Instant heating device, control method and control device thereof, water treatment device and medium |
| CN114483554A (en) * | 2021-12-16 | 2022-05-13 | 威乐(中国)水泵系统有限公司 | Starting method and device of intelligent hot water circulating pump |
| CN115682095B (en) * | 2022-12-30 | 2023-03-28 | 唐山大通金属制品有限公司 | Wireless water heating frequency conversion intelligent control method and system |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2040757U (en) * | 1988-04-14 | 1989-07-12 | 刘忠宪 | Intelligence type gas-burning water heater |
| GB2418724A (en) * | 2004-09-30 | 2006-04-05 | Energy Control Systems Ltd | Boiler control unit |
| US7731096B2 (en) * | 2005-11-02 | 2010-06-08 | Emerson Electric Co. | Controller for two-stage heat source usable with single and two stage thermostats |
| CN201184439Y (en) * | 2008-03-13 | 2009-01-21 | 李建华 | Tap water run-away leakage automatic closing valve |
| CN104110883B (en) * | 2014-03-06 | 2019-03-22 | 芜湖美的厨卫电器制造有限公司 | Gas heater and its control method |
| KR101643867B1 (en) * | 2014-10-30 | 2016-08-01 | 린나이코리아 주식회사 | The initial ignition of the heater control method for stable water supply |
| CN205351795U (en) * | 2016-01-15 | 2016-06-29 | 华北理工大学 | Water heater section water control device that delays with constant temperature |
| CN206670084U (en) * | 2017-03-31 | 2017-11-24 | 杨庆辉 | A kind of device for reducing gas heater frequent starting |
| CN107449156B (en) * | 2017-08-10 | 2020-07-31 | 广州机智云物联网科技有限公司 | Water consumption condition monitoring method for electric water heater and electronic equipment |
| CN108469119A (en) * | 2018-02-24 | 2018-08-31 | 艾欧史密斯(中国)热水器有限公司 | The control method and its control device of hot water apparatus |
-
2018
- 2018-11-30 CN CN201811452384.5A patent/CN111256370B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111256370A (en) | 2020-06-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111256370B (en) | Water heater control method capable of resisting self-starting | |
| JP4994875B2 (en) | Gas appliance identification device | |
| CN106500342B (en) | A kind of hot water circuit control system with immediate thermal function | |
| CN109612111B (en) | Method for controlling gas water heater with storage tank | |
| JP5171142B2 (en) | Gas meter | |
| JP2008107262A (en) | Device for discriminating gas appliance | |
| CN111365829A (en) | Intelligent control method, system and platform of air conditioner | |
| CN104748356B (en) | Gallbladder-heat energy reaction cabin speed heat electric heater and its control method in double courages | |
| JP2008267740A (en) | Gas shut-off device | |
| US20140033993A1 (en) | Hydrogen gas buildup prevention in hot water heaters | |
| CN112194094B (en) | Water inlet control system with probe for water tank full of water | |
| CN106766216B (en) | A kind of intelligent backwater control method, controller and control system | |
| CN106885376B (en) | Overtemperature protection control method for gas water heater | |
| JP6084456B2 (en) | Gas usage identification system | |
| CN110575050B (en) | Cooking method, cooking device, cooking appliance and computer readable storage medium | |
| CN115143635B (en) | Combustion state management method of gas water heater and gas water heater | |
| CN110345638B (en) | Water saving method of water storage type water heater and water storage type water heater | |
| JP5076506B2 (en) | Flow measuring device and program thereof | |
| CN204478445U (en) | Gallbladder-heat energy reaction cabin speed heating electric water heater in two courage | |
| CN112944429B (en) | Heat pump unit and control method thereof | |
| JP5528598B2 (en) | Timer detection device and abnormality detection device | |
| CN110848968A (en) | Water heater and control method thereof | |
| CN112794276B (en) | Water storage device and control method | |
| CN113048656B (en) | Sterilization control method of electric water heater | |
| CN112902459B (en) | Water heater control method and electric water heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |