CN110068152B - Control method of gas water heater and gas water heater - Google Patents
Control method of gas water heater and gas water heater Download PDFInfo
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- CN110068152B CN110068152B CN201810064952.8A CN201810064952A CN110068152B CN 110068152 B CN110068152 B CN 110068152B CN 201810064952 A CN201810064952 A CN 201810064952A CN 110068152 B CN110068152 B CN 110068152B
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- water heater
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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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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
The invention belongs to the technical field of gas water heaters, and discloses a control method of a gas water heater and the gas water heater. The control method of the gas water heater comprises the following control steps: detecting a water flow signal and judging whether the water flow signal is greater than a safe flow value or not; if the water flow signal is larger than the safe flow value, further judging whether the duration time of the water flow signal is larger than an interference set value; if the interference value is larger than the interference set value, controlling the gas water heater to start heating; and judging whether the water flow signal is greater than a maximum flow value, if so, judging whether the duration of the water flow signal is greater than a record replacement value, and if so, re-determining the safe flow value according to the water flow signal. The gas water heater is controlled by using the control method of the gas water heater. The invention can eliminate instantaneous interference water flow signals such as toilet flushing and the like on the basis of not prolonging the water flow detection time.
Description
Technical Field
The invention relates to the technical field of gas water heaters, in particular to a control method of a gas water heater and the gas water heater.
Background
The gas water heater is also called as a gas water heater, and refers to a gas appliance which takes gas as fuel and transfers heat to cold water flowing through a heat exchanger in a combustion heating mode so as to achieve the purpose of preparing hot water. The existing gas water heater is started usually by detecting a water flow signal, a water flow sensor on the gas water heater detects the water flow signal when a user opens a water valve to supply water, after the signal is output to a water heater control board, the water heater control board starts a fan, an igniter discharges to ignite, a gas valve is opened, and the water heater starts to burn to supply hot water.
In the in-service use, because the structural problem of domestic water pipe way, after the bath of bath closestool finishes, can produce a reverse impact rivers signal in the pipeline, water heater water flow sensor detects this impact rivers signal after, can start the fan immediately for at every turn the closestool washes by water and finishes, the water heater fan all can work, causes the puzzlement for the user.
In order to solve the problem, the prior art scheme is to prolong the water flow detection time, so as to eliminate water flow interference signals like flushing a toilet and the like, but the prolonging of the detection time increases the amount of cold water discharged by a user, causes waste, and also causes slow ignition start of the gas water heater during normal use of bathing and the like.
Disclosure of Invention
The invention aims to provide a control method of a gas water heater and the gas water heater, which can eliminate an interference water flow signal on the basis of not prolonging the water flow detection time so as to solve the problem of false start of the conventional gas water heater in the use process.
In order to achieve the purpose, the invention adopts the following technical scheme:
a control method of a gas water heater comprises the following steps:
detecting a water flow signal and judging whether the water flow signal is greater than a safe flow value or not;
if the water flow signal is larger than the safe flow value, further judging whether the duration time of the water flow signal is larger than an interference set value;
if the interference value is larger than the interference set value, controlling the gas water heater to start heating;
and judging whether the water flow signal is greater than a maximum flow value, if so, judging whether the duration of the water flow signal is greater than a record replacement value, and if so, re-determining the safe flow value according to the water flow signal.
Preferably, the ratio of the safe flow value to the maximum flow value is n, and n is greater than 1.
Preferably, the disturbance set value is smaller than the record replacement value.
Preferably, if the water flow signal is smaller than the safe flow value, the gas water heater is controlled to start heating.
Preferably, if the water flow signal is greater than the safe flow value and the duration of the water flow signal is greater than the interference set value, the gas water heater is controlled to start heating, and then whether the duration of the water flow signal is greater than the record replacement value is judged.
Preferably, if the water flow signal is smaller than the safe flow value, the gas water heater is controlled to start heating, and then whether the water flow signal is larger than the maximum flow value is judged.
Preferably, if the water flow signal is greater than the maximum flow value and the duration of the water flow signal is less than or equal to the recorded change value, the maximum flow value and the safe flow value are maintained.
Preferably, a memory is arranged on a water heater control board in the gas water heater, and the maximum flow value and the safe flow value are stored in the memory.
Preferably, when the gas water heater is controlled to start heating, the fan is controlled to start firstly, and then ignition and combustion are controlled.
The gas water heater is controlled by using the control method of the gas water heater.
The invention has the beneficial effects that: instantaneous interference water flow signals such as toilet flushing and the like can be eliminated on the basis of not prolonging the water flow detection time, the problem of false start of the gas water heater in the use process is avoided, and the setting of the replaced safe flow value can be changed, so that the method can be suitable for different water using environments.
Drawings
Fig. 1 is a flowchart of a signal for draining a disturbed water flow in a method for controlling a gas water heater according to an embodiment of the present invention;
fig. 2 is a flowchart of replacing the safety flow value in the control method of the gas water heater according to the embodiment of the present invention;
fig. 3 is a flowchart of a control method of a gas water heater according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The embodiment provides a control method of a gas water heater, as shown in fig. 1, in the method, the control steps for eliminating instantaneous water flow interference signals such as toilet flushing are as follows:
step one, detecting a water flow signal and judging whether the water flow signal is greater than a safe flow value.
And step two, if the water flow signal is larger than the safety flow value, further judging whether the duration time of the water flow signal is larger than an interference set value.
And step three, if the temperature is larger than the interference set value, controlling the gas water heater to start heating.
As shown in fig. 2, in the control method of the gas water heater of the present embodiment, in order to ensure that the safe flow value can be changed and replaced, the control steps that the method can be adapted to different water usage environments are:
step one, detecting a water flow signal and judging whether the water flow signal is greater than a maximum flow value.
And step two, if the flow rate is larger than the maximum flow rate value, judging whether the duration time of the water flow signal is larger than a record replacement value or not.
And step three, if the flow rate is larger than the recorded replacement value, re-determining the safe flow rate value according to the water flow signal.
As shown in fig. 3, the overall control method of the gas water heater provided by the present invention includes the following steps:
step one, a water flow sensor detects a water flow signal.
In the step, the gas water heater is powered on, and a water flow sensor in the gas water heater detects a water flow signal in real time.
Step two, judging whether the value Q of the water flow signal is larger than the maximum flow value Q recorded on the control board of the water heatermaxIs n times, if Q is less than or equal to nQmaxThen, thenControlling the gas water heater to start and heat if Q is more than nQmaxThen the next step is performed.
The water heater control board is provided with a memory and a maximum flow value QmaxIs stored on the memory. In the embodiment, the memory type is an EEPROM (Electrically Erasable Programmable read only memory), which does not lose data in the power-off state, and the maximum flow rate value Q stored in the memory is initially used when the gas water heater is initially usedmaxZero or an empirical value set according to normal domestic water usage conditions.
The value n is a proportionality coefficient which ensures that interfering signals can be identified and excluded and is greater than 1, with the aim of excluding more than QmaxIn the present embodiment, n is 1.2.
In this step, if Q ≦ nQmaxAnd when the gas water heater is controlled to start heating, the water heater control board firstly controls the fan to start and then controls ignition and combustion. After the gas water heater is started to heat, whether the value Q of the water flow signal is larger than the value Q of the maximum flow value or not is continuously judgedmaxIf Q > QmaxThen proceed to step four.
Step three, judging whether the duration time t of the water flow signal is greater than the set interference value t or not1If t is less than or equal to t1Controlling the gas water heater not to start if t is more than t1And controlling the gas water heater to start heating and carrying out the next step.
In this step, if t ≦ t1If t is greater than t, the signal is judged to be a short-time water flow interference signal like flushing of a toilet, the gas water heater is controlled not to be started, and if t is greater than t1If the water consumption is normal, the water consumption signal is judged to be a normal water consumption signal, and the gas water heater is controlled to start heating. The duration of the interference water flow signal is less than or equal to the interference set value t1In this embodiment, to eliminate the instantaneous interference water flow signal, the interference set value t is set1Is 1 s.
Step four, judging whether the duration time t of the water flow signal is greater than the record replacement value t or not2If t is less than or equal to t2Maintaining the value of the maximum flow rate QmaxUnchanged if t > t2Then the value Q is stored as Qmax。
In this step, if t ≦ t2If t is greater than t, the water consumption signal is judged to be a short-time water consumption signal which does not interfere with the difference of instantaneous interference water flow signals of flushing the toilet bowl and the like2If the signal is a long-time water use signal, the signal is a signal for accurately identifying instantaneous interference water flow such as flushing of a toilet and the like, and the numerical value Q is stored as Qmax. In this embodiment, to ensure QmaxReliability of the value, will t2Set to 5 s.
The control method of the gas water heater can eliminate instantaneous interference water flow signals such as toilet flushing and the like on the basis of not prolonging the water flow detection time, avoids the problem of false start of the gas water heater in the use process, and can change the replaced safe flow value nQmaxThe method can be suitable for different water environments.
The invention also provides a gas water heater, which is controlled by using the control method of the gas water heater. The gas water heater can eliminate instantaneous interference water flow signals such as toilet flushing and the like on the basis of not prolonging the water flow detection time.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A control method of a gas water heater is characterized by comprising the following steps:
detecting a water flow signal and judging whether the water flow signal is greater than a safe flow value or not;
if the water flow signal is larger than the safe flow value, further judging whether the duration time of the water flow signal is larger than an interference set value;
if the interference value is larger than the interference set value, controlling the gas water heater to start heating;
and judging whether the water flow signal is greater than a maximum flow value, if so, judging whether the duration of the water flow signal is greater than a record replacement value, and if so, re-determining the safe flow value according to the water flow signal.
2. The control method of the gas water heater according to claim 1, wherein if the water flow signal is smaller than the safe flow value, the gas water heater is controlled to start heating.
3. The control method of the gas water heater according to claim 1, wherein if the water flow signal is greater than the safety flow value and the duration of the water flow signal is greater than the interference set value, the gas water heater is controlled to start heating, and then it is determined whether the duration of the water flow signal is greater than the record replacement value.
4. The control method of the gas water heater according to claim 1, wherein if the water flow signal is smaller than the safe flow value, the gas water heater is controlled to start heating, and then whether the water flow signal is larger than the maximum flow value is determined.
5. The control method of a gas water heater according to claim 1, wherein if the water flow signal is greater than the maximum flow value and the duration of the water flow signal is less than or equal to the recorded change value, the maximum flow value and the safety flow value are kept unchanged.
6. The control method of the gas water heater according to claim 1, wherein a memory is provided on a water heater control board in the gas water heater, and the maximum flow value and the safe flow value are stored on the memory.
7. The control method of the gas water heater according to claim 1, wherein when the gas water heater is controlled to start heating, the fan is controlled to start and then ignition combustion is controlled.
8. The control method of a gas water heater according to any one of claims 1 to 7, wherein a ratio of the safe flow value to the maximum flow value is n, and n is greater than 1.
9. The control method of a gas water heater according to any one of claims 1 to 7, wherein the disturbance set value is smaller than the record replacement value.
10. A gas water heater characterized by being controlled by the control method of the gas water heater according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810064952.8A CN110068152B (en) | 2018-01-23 | 2018-01-23 | Control method of gas water heater and gas water heater |
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| CN201810064952.8A CN110068152B (en) | 2018-01-23 | 2018-01-23 | Control method of gas water heater and gas water heater |
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| CN110068152A CN110068152A (en) | 2019-07-30 |
| CN110068152B true CN110068152B (en) | 2021-11-12 |
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| CN110940097B (en) * | 2019-12-16 | 2021-10-12 | 华帝股份有限公司 | Control method for self-adaptive starting ignition of gas water heater |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022832A (en) * | 2009-09-11 | 2011-04-20 | 海尔集团公司 | Water temperature control device and water temperature control method for gas water heater |
| CN104296389A (en) * | 2014-10-01 | 2015-01-21 | 侯舒婷 | Water temperature control device and water temperature control method for gas water heater |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070227468A1 (en) * | 2006-03-30 | 2007-10-04 | Bradford White Corporation | Apparatus and method for introducing and drawing water in a water heater |
| US9222816B2 (en) * | 2010-05-14 | 2015-12-29 | Belkin International, Inc. | Apparatus configured to detect gas usage, method of providing same, and method of detecting gas usage |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022832A (en) * | 2009-09-11 | 2011-04-20 | 海尔集团公司 | Water temperature control device and water temperature control method for gas water heater |
| CN104296389A (en) * | 2014-10-01 | 2015-01-21 | 侯舒婷 | Water temperature control device and water temperature control method for gas water heater |
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