CN111981693A - Gas water heater overtemperature control method and gas water heater - Google Patents
Gas water heater overtemperature control method and gas water heater Download PDFInfo
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- CN111981693A CN111981693A CN201910438188.0A CN201910438188A CN111981693A CN 111981693 A CN111981693 A CN 111981693A CN 201910438188 A CN201910438188 A CN 201910438188A CN 111981693 A CN111981693 A CN 111981693A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000013507 mapping Methods 0.000 claims abstract description 13
- 206010053615 Thermal burn Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003287 bathing Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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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 Of Combustion (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
The invention discloses an overtemperature control method of a gas water heater and the gas water heater, wherein the overtemperature control method of the gas water heater comprises the following steps: starting the gas water heater according to a preset temperature, and collecting the water outlet temperature of the gas water heater; determining the overtemperature matched with the preset temperature according to the mapping relation between the preset temperature and the overtemperature; judging whether the temperature of the water is greater than or equal to a protection temperature, wherein the protection temperature is the sum of a preset temperature and an over-temperature; if yes, stopping gas supply; if not, then normal work, gas heater not only has overtemperature prote function, and it has corresponding overtemperature to predetermine the temperature mapping moreover, and under the different temperature of predetermineeing, the play water temperature can wave adaptively, carries out overtemperature protection, improves user experience.
Description
Technical Field
The invention belongs to the technical field of gas water heater control, and particularly relates to an overtemperature control method of a gas water heater and the gas water heater.
Background
At present, a gas water heater with an overheat protection function has two implementation modes. One implementation way is as follows: a temperature controller is additionally arranged on a hot water pipe of the heat exchanger, a temperature controller circuit is connected with the gas stop valve in series, and when the water temperature is higher than the protection temperature (such as 90 ℃) of the temperature controller, the gas stop valve circuit is disconnected, and gas is automatically turned off and flameout; the other realization mode is as follows: a temperature probe is arranged on a water outlet pipe, when the monitored water outlet temperature is higher than a certain fixed value (such as 75 ℃), the current of a gas stop valve is cut off by a controller, and the gas is stopped and flameout is carried out. Since the temperature of the overheat protection is generally much higher than the actual use temperature (e.g., 42 ℃), when hot water is actually used, the hot water may be burnt by the high-temperature hot water.
Disclosure of Invention
The invention aims to provide an overtemperature control method for a gas water heater, which solves the problem that the gas water heater with an overtemperature protection function in the prior art has higher overtemperature protection temperature.
Another object of the present invention is to provide a gas water heater.
The technical scheme adopted by the invention is that,
an overtemperature control method for a gas water heater comprises the following steps: starting the gas water heater according to a preset temperature, and collecting the water outlet temperature of the gas water heater; determining the overtemperature matched with the preset temperature according to the mapping relation between the preset temperature and the overtemperature; judging whether the temperature of the water is greater than or equal to a protection temperature, wherein the protection temperature is the sum of a preset temperature and an over-temperature; if yes, stopping gas supply; if not, the operation is normal.
Optionally, the over-temperature is a constant.
Optionally, the over-temperature is 5-10 ℃.
Optionally, the mathematical expression of the mapping relationship between the preset temperature and the over-temperature is as follows: the preset temperature is inversely related to the over-temperature as the temperature value increases.
Optionally, as the temperature value increases, the mathematical relationship between the preset temperature and the over-temperature is expressed as a linear inverse proportion.
Optionally, the mathematical relationship between the preset temperature and the over-temperature is expressed as follows:
△Tovertemperature＝(△TOver temperature max-△TOvertemperature of min)*(TPreset of-TPreset min)/(TPreset max-TPreset min)+△TOvertemperature of min
Wherein, Delta TOvertemperatureFor over-temperature, Δ TOver temperature maxIs the maximum overtemperature temperature, Delta TOvertemperature of minAt a minimum over-temperature, TPreset ofTo a predetermined temperature, TPreset maxTo a maximum preset temperature, TPreset minIs the minimum preset temperature.
A gas water heater, comprising: the controller is used for producing thermal combustor, the water route pipeline that is used for supplying water, is used for providing the gas pipeline of gas and is used for overtemperature controls, the water route pipeline includes input pipeline and output pipeline, the input pipeline with output pipeline respectively with the combustor intercommunication, just be equipped with the temperature sensor who is used for detecting the temperature on the output pipeline, be equipped with the valve that is used for switching the gas on the gas pipeline, temperature sensor and the valve respectively with controller signal connection.
Optionally, the temperature controller further comprises a display for displaying the preset temperature, and the display is in signal connection with the controller.
Optionally, the display further comprises a button for adjusting the parameter.
Optionally, the valve comprises a proportional valve.
Compared with the prior art, the water heater has an overtemperature protection function when in use, parameter setting can be carried out on overtemperature difference, the water outlet overheating temperature is favorably reduced, the bathing experience is improved, hot water scalding is avoided, the overtemperature difference can be automatically adjusted according to the preset temperature, and the requirements of water using occasions in different seasons are met.
Drawings
Fig. 1 is a method for controlling the overtemperature of a gas water heater provided in embodiment 1 of the present invention.
Fig. 2 is a gas water heater provided in embodiment 2 of the present invention.
Fig. 3 is a schematic diagram of a mapping relationship between a preset temperature and an over-temperature provided in embodiment 3 of the present invention.
FIG. 4 is a schematic diagram of the overtemperature temperature provided in example 4 of the present invention.
Fig. 5 is a schematic diagram of a mapping relationship between a preset temperature and an over-temperature provided in embodiment 5 of the present invention.
The reference numbers are as follows:
1. burner, 2, temperature sensor, 3, display, 31, button, 4, valve, 5, controller.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and 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.
The embodiment 1 of the invention provides an overtemperature control method for a gas water heater, which specifically comprises the following steps as shown in fig. 1:
starting the gas water heater according to a preset temperature, and collecting the water outlet temperature of the gas water heater;
determining the overtemperature matched with the preset temperature according to the mapping relation between the preset temperature and the overtemperature;
judging whether the temperature of the water is greater than or equal to a protection temperature, wherein the protection temperature is the sum of a preset temperature and an over-temperature;
if yes, stopping gas supply; if not, the operation is normal. In the specific implementation process, each preset temperature corresponds to a corresponding overtemperature temperature, namely once the actual outlet water temperature exceeds the sum of the preset temperature and the overtemperature temperature, the gas water heater is judged to be in an overtemperature state, in order to prevent a user from being scalded by the overtemperature or further influence the normality of the gas water heater due to the overtemperature, in this state, the gas water heater is stopped, and when the actual outlet water temperature does not exceed the sum of the preset temperature and the overtemperature temperature, the gas water heater is judged to be normally used, and the fluctuation of the temperature is in a bearable and controllable range.
Referring to fig. 2, an embodiment 2 of the present invention provides a gas water heater, including: the water path pipeline comprises an input pipeline and an output pipeline, the input pipeline and the output pipeline are respectively communicated with the combustor 1, the output pipeline is provided with a temperature sensor 2 for detecting water temperature, the gas pipeline is provided with a valve 4 for switching on and off gas, the temperature sensor 2 and the valve 4 are respectively in signal connection with the controller 5, in the specific implementation process, the temperature sensor 2 detects the temperature of water and transmits a temperature signal to the controller 5, when the outlet water temperature exceeds the sum of the preset temperature and the over-temperature, the controller 5 controls the valve 4 to be closed, and then the combustor 1 stops burning, the outlet water temperature is prevented from being overhigh, and the purpose of over-temperature protection is achieved, the control signal may be a signal or a code in various forms, for example, in an embodiment of the present disclosure, the control signal may be a digital signal, and accordingly, the controller may be various units capable of implementing an adjustable digital signal, for example, various single-chip microcomputers, microcontrollers, DSPs (digital signal processors) and FPGAs (Field-Programmable Gate arrays), preferably, in this embodiment, the controller may be a single-chip microcomputer, and various control functions may be implemented by programming the single-chip microcomputer, for example, in this embodiment, various control functions may be implemented by implementing acquisition, processing and adjustment functions of a temperature signal, and the single-chip microcomputer has an advantage of facilitating interface call and control.
The gas heater is still including being used for showing the display 31 of predetermineeing the temperature, display 31 with 5 signal connection of controller, adaptively, display 31 is still including the button 31 that is used for adjusting parameter, through the input of button 31 to will predetermine the temperature and show on display 31, convenient to use, for the gas control of adjusting combustor 1 in order to facilitate, valve 4 includes the proportional valve.
Referring to fig. 3, in embodiment 3, a method for controlling the over-temperature of the gas water heater is provided, in which a mapping relationship between the preset temperature and the over-temperature is set, preferably, the over-temperature is a constant, and in the specific implementation process, the over-temperature is 5 ℃ to 10 ℃, and the fluctuation of the above temperature range does not scald the skin and does not affect the normal operation of the gas water heater.
Referring to fig. 4, in embodiment 4, a method for controlling over-temperature of a gas water heater is provided, and a mapping relationship between the preset temperature and the over-temperature is set, specifically, a bearing range of a user to water temperature is set to be constant, when the outlet water temperature is far away from a bearing limit, the user is insensitive to fluctuation of the outlet water temperature and is not easy to scald the user, and when the outlet water temperature is close to the bearing limit, the user is sensitive to fluctuation of the outlet water temperature and is easy to scald the user, therefore, a mathematical expression of the mapping relationship between the preset temperature and the over-temperature is as follows: along with the increase of temperature numerical value, predetermine the temperature with super temperature is the negative correlation, when predetermineeing the temperature higher, and the super temperature who matches rather than is less, when predetermineeing the temperature lower, and the super temperature who matches rather than is great, improves user's user experience. Preferably, as the temperature value increases, the mathematical relationship between the preset temperature and the over-temperature is expressed as a linear inverse proportion.
Referring to fig. 5, in embodiment 5, a method for controlling an over-temperature of a gas water heater is provided, in which a mapping relationship between the preset temperature and the over-temperature is set, specifically, a mathematical relationship between the preset temperature and the over-temperature is expressed as follows:
△Tovertemperature＝(△TOver temperature max-△TOvertemperature of min)*(TPreset of-TPreset min)/(TPreset max-TPreset min)+△TOvertemperature of min
Wherein, Delta TOvertemperatureFor over-temperature, Δ TOver temperature maxIs the maximum overtemperature temperature, Delta TOvertemperature of minAt a minimum over-temperature, TPreset ofTo a predetermined temperature, TPreset maxTo a maximum preset temperature, TPreset minAt a minimum preset temperature, when the preset temperature T isPreset ofWhen the value is larger, the over-temperature difference delta T is obtainedOvertemperatureFollow and diminish, can effectively prevent that the temperature of water is too high to influence and washBathing experience; when the preset temperature T isPreset ofWhen the value is smaller, the over-temperature difference delta T is obtainedOvertemperatureThe follow-up enlargement avoids the over-temperature protection which is easily triggered due to the overhigh temperature of the water inlet in summer, and ensures that the bathing process is not easy to extinguish.
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 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 (10)
1. The overtemperature control method of the gas water heater is characterized by comprising the following steps:
starting the gas water heater according to a preset temperature, and collecting the water outlet temperature of the gas water heater; determining the overtemperature matched with the preset temperature according to the mapping relation between the preset temperature and the overtemperature; judging whether the temperature of the water is greater than or equal to a protection temperature, wherein the protection temperature is the sum of a preset temperature and an over-temperature; if yes, stopping gas supply; if not, the operation is normal.
2. The gas water heater over-temperature control method according to claim 1, wherein the over-temperature is constant.
3. The gas water heater over-temperature control method according to claim 2, wherein the over-temperature is 5 ℃ to 10 ℃.
4. The gas water heater over-temperature control method according to claim 1, wherein the mathematical expression of the mapping relationship between the preset temperature and the over-temperature is as follows: the preset temperature is inversely related to the over-temperature as the temperature value increases.
5. The gas water heater over-temperature control method according to claim 1 or 4, wherein the mathematical relationship between the preset temperature and the over-temperature is expressed as a linear inverse proportion as the temperature value increases.
6. The gas water heater over-temperature control method according to claim 5, wherein the mathematical relationship between the preset temperature and the over-temperature expresses:
△Tovertemperature＝(△TOver temperature max-△TOvertemperature of min)*(TPreset of-TPreset min)/(TPreset max-TPreset min)+△TOvertemperature of min
Wherein, Delta TOvertemperatureFor over-temperature, Δ TOver temperature maxIs the maximum overtemperature temperature, Delta TOvertemperature of minAt a minimum over-temperature, TPreset ofTo a predetermined temperature, TPreset maxTo a maximum preset temperature, TPreset minIs the minimum preset temperature.
7. A gas water heater, comprising: the controller is used for producing thermal combustor, the water route pipeline that is used for supplying water, is used for providing the gas pipeline of gas and is used for overtemperature controls, the water route pipeline includes input pipeline and output pipeline, the input pipeline with output pipeline respectively with the combustor intercommunication, just be equipped with the temperature sensor who is used for detecting the temperature on the output pipeline, be equipped with the valve that is used for switching the gas on the gas pipeline, temperature sensor and the valve respectively with controller signal connection.
8. The gas water heater of claim 7, further comprising a display for displaying a preset temperature, said display in signal communication with said controller.
9. The gas water heater of claim 8, wherein the display further comprises a button for adjusting a parameter.
10. The gas water heater of claim 7, wherein the valve comprises a proportional valve.
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| CN201910438188.0A CN111981693B (en) | 2019-05-24 | 2019-05-24 | Gas water heater and overtemperature control method thereof |
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| CN201910438188.0A CN111981693B (en) | 2019-05-24 | 2019-05-24 | Gas water heater and overtemperature control method thereof |
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| CN111981693A true CN111981693A (en) | 2020-11-24 |
| CN111981693B CN111981693B (en) | 2022-06-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264074A (en) * | 2021-08-24 | 2022-04-01 | 佛山市顺德区美的饮水机制造有限公司 | Instant heating assembly, regulating method and regulating device thereof, water treatment equipment and medium |
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| CN106885376A (en) * | 2017-02-09 | 2017-06-23 | 青岛经济技术开发区海尔热水器有限公司 | Overtemperature protection control method for gas water heater |
| CN207501464U (en) * | 2017-12-01 | 2018-06-15 | 广东万家乐燃气具有限公司 | Intelligent central fuel gas water heating device |
| CN109405268A (en) * | 2018-11-09 | 2019-03-01 | 华帝股份有限公司 | Gas water heater and control method |
| CN109695961A (en) * | 2019-01-16 | 2019-04-30 | 珠海格力电器股份有限公司 | Constant temperature control method and constant temperature display device suitable for gas water heater |
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- 2019-05-24 CN CN201910438188.0A patent/CN111981693B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885376A (en) * | 2017-02-09 | 2017-06-23 | 青岛经济技术开发区海尔热水器有限公司 | Overtemperature protection control method for gas water heater |
| CN207501464U (en) * | 2017-12-01 | 2018-06-15 | 广东万家乐燃气具有限公司 | Intelligent central fuel gas water heating device |
| CN109405268A (en) * | 2018-11-09 | 2019-03-01 | 华帝股份有限公司 | Gas water heater and control method |
| CN109695961A (en) * | 2019-01-16 | 2019-04-30 | 珠海格力电器股份有限公司 | Constant temperature control method and constant temperature display device suitable for gas water heater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264074A (en) * | 2021-08-24 | 2022-04-01 | 佛山市顺德区美的饮水机制造有限公司 | Instant heating assembly, regulating method and regulating device thereof, water treatment equipment and medium |
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| CN111981693B (en) | 2022-06-07 |
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