CN111981699B - Water heater and control method - Google Patents
Water heater and control method Download PDFInfo
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- CN111981699B CN111981699B CN202010834356.0A CN202010834356A CN111981699B CN 111981699 B CN111981699 B CN 111981699B CN 202010834356 A CN202010834356 A CN 202010834356A CN 111981699 B CN111981699 B CN 111981699B
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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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- General Engineering & Computer Science (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
The invention relates to the technical field of water heaters, and discloses a water heater and a control method, wherein the water heater comprises: the water flow sensor is used for detecting the water flow of the water path system; the controller is configured to: acquiring the water flow of the waterway system detected by the water flow sensor in a standby state of the water heater; when the water flow of the water path system is larger than 0 and smaller than the starting water flow of the water heater, further determining the water leakage amount of the water path system within a preset time t according to the water flow; and when the water leakage amount of the water path system in the preset time t is greater than or equal to the set water amount, judging that the water heater is in a water leakage state, and controlling the stop valve to close. The invention can detect the water leakage condition of the water heater in time and ensure the safety of using the water heater.
Description
Technical Field
The invention relates to the technical field of water heaters, in particular to a water heater and a control method.
Background
The corrosion and water leakage of the heat exchanger are one of the main after-sale maintenance problems of the gas water heater, and the corrosion and water leakage of the heat exchanger often occurs in some areas due to the large difference of local water supply and the difference of the pH value of the water supply. The water leakage amount in the early stage of corrosion water leakage is usually small, the water leakage amount cannot reach the starting water flow amount of the water heater, the gas water heater does not react on the water flow lower than the starting water flow amount and is still in a standby state, serious waste of water resources can be caused for a long time, the water leakage fault cannot be found all the time, and certain danger exists when the water heater is used.
Disclosure of Invention
The purpose of the invention is: the water heater can detect the water leakage condition in time and ensure the safety of using the water heater.
In order to achieve the above object, the present invention provides a water heater comprising: the water flow sensor is used for detecting the water flow of the water path system;
the controller is configured to:
acquiring the water flow of the waterway system detected by the water flow sensor in a standby state of the water heater;
when the water flow of the water path system is larger than 0 and smaller than the starting water flow of the water heater, further determining the water leakage amount of the water path system within a preset time t according to the water flow;
and when the water leakage amount of the water path system in the preset time t is greater than or equal to the set water amount, judging that the water heater is in a water leakage state, and controlling the stop valve to close.
Further, the water flow of the waterway system is greater than 0 and less than the starting water flow of the water heater, and the method specifically further comprises the following steps: and in the preset time t, the water flow of the water path system is continuously larger than 0 and smaller than the starting water flow of the water heater.
Further, when the water leakage amount of the water path system in the preset time t is smaller than the set water amount, whether the water flow amount of the water path system is equal to 0 is judged again.
Further, the calculation formula of the water leakage amount is as follows: and V is delta t, wherein V represents the water leakage amount, and delta represents the water flow rate of the water path system.
Further, when the water flow of the waterway system is equal to 0, the water heater continues to stand by.
Furthermore, when the water flow of the water path system is larger than or equal to the starting water flow of the water heater, the water heater is normally started to work.
Further, the water circulation system comprises a burner and a fan, wherein the burner is used for heating water passing through the water path system, the fan is installed below the burner, and the controller is configured to: and when the water heater is normally started, the fan is controlled to be turned on so as to introduce air into the water heater and further evacuate waste gas in the water heater.
Further, the device comprises an alarm device, and the controller is configured to: and under the standby state of the water heater, when the stop valve is closed, the alarm device is controlled to send out an alarm prompt signal.
Further, a display device is included, and the controller is configured to: and under the standby state of the water heater, when the stop valve is closed, the display device is controlled to display fault information.
A control method of a water heater, the water heater comprising: the water path system is provided with a water inlet and a water outlet, and the stop valve is arranged at the water inlet;
the control method comprises the following steps: acquiring the water flow of the waterway system detected by the water flow sensor in a standby state of the water heater;
when the water flow of the water path system is larger than 0 and smaller than the starting water flow of the water heater, further determining the water leakage amount of the water path system within a preset time t according to the water flow;
and when the water leakage amount of the water path system in the preset time t is greater than or equal to the set water amount, judging that the water heater is in a water leakage state, and controlling the stop valve to close.
Compared with the prior art, the water heater and the control method provided by the invention have the beneficial effects that: through the discharge when detecting the water heater standby, and then calculate corresponding water leakage, judge whether the water heater leaks according to the size of water leakage, in time close the valve and prevent to continue to leak when judging to leak, avoided the waste of water resource, the user can in time overhaul according to this condition simultaneously, has ensured water heater safe in utilization.
Drawings
FIG. 1 is a schematic view of the water heater configuration of the present invention;
fig. 2 is a flow chart of the control method of the present invention.
In the figure, 1, a body; 2. a heat exchanger; 3. a burner; 4. a waterway system; 5. a main control board; 6. a water flow sensor; 7. a stop valve; 8. a fan; 9. an air inlet; 10. a proportional valve; 11. a water inlet; 12. a water outlet; 13. a smoke exhaust pipe.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Example 1: a water heater.
As shown in fig. 1, a water heater according to a preferred embodiment of the present invention includes a body 1, a heat exchanger 2 and a waterway system 4 are disposed in the body 1, the waterway system 4 passes through the heat exchanger 2, a burner 3 is disposed below the heat exchanger 2, a fan 8 and an air inlet 9 are disposed below the burner 3, a smoke exhaust pipe 13 is disposed at the top of the body 1, a main control board 5 is disposed in the body 1, the waterway system 4 is provided with a water inlet 11 and a water outlet 12, a stop valve 7 and a water flow sensor 6 are sequentially disposed on the waterway system 4 from the water inlet 11 to the water outlet 12, and the stop valve 7 is in a long-term open state.
The operating principle of the water heater that this embodiment provided is as follows, water gets into waterway system 4 via water inlet 11, and the gas gets into 3 burning of combustor through air inlet 9, and the heat that the burning produced is through heat exchanger 2 heat transfer to waterway system 4, and the water heating back is discharged via delivery port 12, and exhaust pipe 13 is used for discharging the flue gas that the burning produced.
Based on the scheme, the water flow sensor 6 is used for detecting the water flow of the waterway system 4; the main control board 5 is configured to:
acquiring the water flow of the waterway system detected by the water flow sensor in a standby state of the water heater;
when the water flow of the water path system is larger than 0 and smaller than the starting water flow of the water heater, further determining the water leakage amount of the water path system within a preset time t according to the water flow;
and when the water leakage amount of the water path system in the preset time t is greater than or equal to the set water amount, judging that the water heater is in a water leakage state, and controlling the stop valve to close.
Based on the above scheme, the water heater is in the standby state, and the water flow of the waterway system of the water heater under the state is monitored in real time, and whether the water leakage condition exists is preliminarily judged for the detected water flow of the waterway system. When the detected water flow delta is between [0, delta 1], judging that water leakage exists, in this case, further detection and judgment are needed, and by calculating the water leakage amount V within the preset time t, when the V is larger than or equal to the set water amount V0, judging that the water heater leaks, and controlling the stop valve to be closed. The set water quantity value V0 can be set according to the conditions of different water heater types, capacities and the like, and the optimal set water quantity value V0 is set according to the actual conditions, so that the accuracy of the detection result is ensured.
Preferably, the water flow of the water path system is greater than 0 and less than the starting water flow of the water heater, and the method specifically further includes: and in the preset time t, the water flow of the water path system is more than 0 and less than the starting water flow of the water heater. The detected water flow delta of the water path system is in the range of [0, delta 1], and delta 1 is the starting water flow of the water heater, namely the water heater starts to heat when the water flow is larger than the starting water flow, which shows that the water flow of the current water path system is abnormal, water leakage possibly exists, the next detection step needs to be carried out, namely a water leakage detection program is carried out, whether water leakage exists is further determined through the detection step in the water leakage detection program, and the detection accuracy is improved.
Preferably, when the water leakage amount of the water path system in the preset time t is smaller than the set water amount, whether the water flow amount of the water path system is equal to 0 is judged again. When the water leakage amount is smaller than the set water amount value, the current condition is not in accordance with the limit of water leakage, and other conditions possibly exist, and the detection process returns to the judgment of the flow interval. In this way, the misjudgment caused by the fact that a user uses water instantly is avoided, and the water heater can judge whether water leakage is continuous or not again because a pre-cleaning process with 2s action exists between the time when the water flow of the water path system is detected and the time when the water heater is ignited and burnt, namely air blown by a fan enters the pre-cleaning process to clean waste gas in the water heater, and only water flows pass through the pre-cleaning process but the water heater is not burnt.
In order to further improve the accuracy of detection judgment, the calculation formula of the water leakage amount is as follows: and V is delta t, wherein V represents the water leakage amount, and delta represents the water flow rate of the water path system. The total water flow of the water channel system in the duration is obtained by multiplying the water flow of the water channel system by the duration, and the total water flow of the water channel system is used as a reference value of water leakage, so that the judgment is more accurate and reliable.
Preferably, the water heater continues to stand by when the water flow rate of the water circuit system is equal to 0. The water flow of the water channel system is equal to 0, which indicates that no water passes through the current water channel, and under the condition, no water leakage exists, the water heater does not need to be started to work, the standby state is kept, and the energy consumption is reduced.
Preferably, when the water flow rate of the water path system is greater than or equal to the starting water flow rate delta 1 of the water heater, the water heater is started to work normally. The delta 1 is used as a starting water flow value of the water heater and needs to be set according to actual requirements, and the water heater works normally under the condition of meeting the water flow requirement.
Preferably, the controller is configured to: and when the water heater is normally started, the fan is controlled to be turned on so as to introduce air into the water heater and further evacuate waste gas in the water heater. Preferably, the controller further comprises an alarm device and a display device, and is configured to: and under the standby state of the water heater, when the stop valve is closed, the alarm device is controlled to send out an alarm prompt signal, and the display device is controlled to display fault information. The water heater system sends out warning prompt signal and reminds the user that the water heater leaks and needs to be overhauled, and only when the trouble is got rid of the back, the water heater just can continue to use, has avoided using under the trouble and has taken place dangerous accident. The alarm prompt signal can be that an LED lamp flickers, no fault is indicated in green light, and a fault occurs in red light; the buzzer can also send out an alarm prompt tone; the display device of the water heater can display a fault signal; or may be combined in the above manner.
Preferably, a proportional valve 10 is connected between the intake port 9 and the burner 3, and the proportion of intake air is adjusted by the proportional valve 10. The shutoff valve is preferably a long open solenoid valve which is closed only after the water leakage failure program is triggered, and is in a passage state in other cases, and the solenoid valve is again in a long open state after the water leakage failure is cleared.
In order to ensure the use safety of the gas water heater, the gas water heater needs to be cleaned before starting, namely, the fan 8 blows air into the gas water heater to empty the waste gas inside, and unnecessary influence on subsequent work caused by the residual waste gas is avoided.
In summary, the water leakage detection method for the water heater provided by the embodiment determines whether the water heater leaks water by detecting the water leakage amount when the hot water is in a standby state, the detection result is accurate and efficient, the water leakage condition of the water heater can be found in time and the user can be informed to overhaul in time, the safety accident caused by using the water heater under the fault is avoided, the fault of the water heater can be guaranteed to be handled in time, and the service life of the water heater is prolonged.
Example 2: a control method of a water heater.
As shown in fig. 2, the present embodiment provides a control method of a water heater, the water heater including: the water path system is provided with a water inlet and a water outlet, and the stop valve is arranged at the water inlet;
the control method comprises the following steps:
acquiring the water flow of the waterway system detected by the water flow sensor in a standby state of the water heater;
when the water flow of the water path system is larger than 0 and smaller than the starting water flow of the water heater, further determining the water leakage amount of the water path system within a preset time t according to the water flow;
and when the water leakage amount of the water path system in the preset time t is greater than or equal to the set water amount, judging that the water heater is in a water leakage state, and controlling the stop valve to close.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (5)
1. A water heater, comprising:
a waterway system having a water inlet and a water outlet;
a stop valve installed at the water inlet;
a water flow sensor for detecting a water flow of the waterway system; and
a controller configured to:
acquiring the water flow of the waterway system detected by the water flow sensor in a standby state of the water heater;
when the water flow of the water path system in the preset time t is continuously larger than 0 and smaller than the starting water flow of the water heater, further determining the water leakage amount of the water path system in the preset time t, wherein the calculation formula of the water leakage amount is as follows: v = δ × t, where V represents water leakage and δ represents water flow rate of the water circuit system; when the water leakage amount of the water path system in the preset time t is less than the set water amount, judging whether the water flow of the water path system is equal to 0 again;
when the water flow of the waterway system is equal to 0, the water heater is continuously standby;
and when the water flow of the water path system is larger than or equal to the starting water flow of the water heater, the water heater is normally started to work.
2. The water heater of claim 1, further comprising a burner for heating water passing in the water circuit system and a fan mounted below the burner, the controller configured to:
and when the water heater is normally started, the fan is controlled to be turned on so as to introduce air into the water heater and further evacuate waste gas in the water heater.
3. The water heater as recited in claim 1, further comprising an alarm device, the controller configured to:
and under the standby state of the water heater, when the stop valve is closed, the alarm device is controlled to send out an alarm prompt signal.
4. The water heater as recited in claim 1, further comprising a display device, the controller configured to:
and under the standby state of the water heater, when the stop valve is closed, the display device is controlled to display fault information.
5. A control method of a water heater, characterized in that the water heater comprises:
a waterway system having a water inlet and a water outlet;
a stop valve installed at the water inlet;
a water flow sensor for detecting a water flow of the waterway system;
the control method comprises the following steps: acquiring the water flow of the waterway system detected by the water flow sensor in a standby state of the water heater;
when the water flow of the water path system in the preset time t is continuously larger than 0 and smaller than the starting water flow of the water heater, further determining the water leakage amount of the water path system in the preset time t, wherein the calculation formula of the water leakage amount is as follows: v = δ × t, where V represents water leakage and δ represents water flow rate of the water circuit system; when the water leakage amount of the water path system in the preset time t is larger than or equal to the set water amount, judging that the water heater is in a water leakage state, and controlling the stop valve to be closed; when the water leakage amount of the waterway system in the preset time t is smaller than the set water amount, judging whether the water flow amount of the waterway system is equal to 0 again;
when the water flow of the waterway system is equal to 0, the water heater is continuously standby;
and when the water flow of the water path system is larger than or equal to the starting water flow of the water heater, the water heater is normally started to work.
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| CN202010834356.0A CN111981699B (en) | 2020-08-18 | 2020-08-18 | Water heater and control method |
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| CN202010834356.0A CN111981699B (en) | 2020-08-18 | 2020-08-18 | Water heater and control method |
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| CN114360220A (en) * | 2021-12-03 | 2022-04-15 | 深圳安吉尔饮水产业集团有限公司 | Method for monitoring water leakage and electronic equipment |
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| KR101143481B1 (en) * | 2012-02-09 | 2012-05-08 | 유백천 | A leak sensing device for a meter |
| CN103322417A (en) * | 2012-03-20 | 2013-09-25 | 江苏正本净化节水科技实业有限公司 | Water leakage protection device and water purification system adopting same, and water leakage prevention method of system |
| CN109237796A (en) * | 2018-07-24 | 2019-01-18 | 广东万家乐燃气具有限公司 | It is a kind of to use water spot water leakage monitoring method and gas heater |
| CN210567573U (en) * | 2019-08-20 | 2020-05-19 | 深圳市名雕装饰股份有限公司 | Intelligent home decoration water supply pipe network water leakage monitoring and protecting system |
| CN111503526A (en) * | 2020-05-15 | 2020-08-07 | 赛欧缇(北京)物联网科技股份有限公司 | Water leakage prevention control device |
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