CN114251839A - Control method of water heater and water heater - Google Patents
Control method of water heater and water heater Download PDFInfo
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- CN114251839A CN114251839A CN202111373454.XA CN202111373454A CN114251839A CN 114251839 A CN114251839 A CN 114251839A CN 202111373454 A CN202111373454 A CN 202111373454A CN 114251839 A CN114251839 A CN 114251839A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 289
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 64
- 239000008236 heating water Substances 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 28
- 239000000523 sample Substances 0.000 claims description 24
- 238000012544 monitoring process Methods 0.000 claims description 8
- 239000002737 fuel gas Substances 0.000 claims description 2
- 230000006872 improvement Effects 0.000 description 7
- 230000003111 delayed effect Effects 0.000 description 5
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000003287 bathing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/124—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium using fluid fuel
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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
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
The invention provides a control method of a water heater and the water heater, comprising the following steps: step S101, entering a half-pipe preheating mode, and detecting whether a real-time preheating parameter reaches a product value of a preheating coefficient and a first preheating parameter, wherein the preheating coefficient is less than or equal to 0.5; if yes, go to step S102; if not, returning to the step S101; step S102, turning off the water pump, and acquiring real-time delay flameout time according to the real-time heating temperature rise; step S103, continuously heating water in the water heater within the real-time delay flameout time; in step S104, the gas control valve is closed. When the real-time preheating parameter reaches the product value of the preheating coefficient and the first preheating parameter, the hot water is judged to be filled in the hot water pipe, the water pump is controlled to be closed, hot water can directly flow out when a user starts the water heater, zero cold water is realized, the preheating time is greatly shortened, and the gas consumption of gas is reduced.
Description
Technical Field
The invention relates to the technical field of water heaters, in particular to a control method of a water heater and the water heater.
Background
In order to reduce the air consumption in the preheating process and solve the problem of cold water pipe hot water, some manufacturers in the industry put forward zero-cold-water gas water heaters in a half-pipe preheating mode. In the half-pipe preheating mode, the flow track of hot water is controlled by reducing preheating time or preheating water quantity and the like, so that the hot water only flows to the farthest water using end of the hot water pipe, and the hot water is reduced from flowing into the water return pipe. After the conventional preheating mode finishes preheating, the temperature of water stored in the water heater after flowing back is higher, and the temperature of an external hot water faucet after preheating boiled water cannot be greatly reduced; after the half-pipe preheating mode finishes preheating, the temperature of water stored in the water heater is low after the water is refluxed, after the water is preheated, the water flow is far larger than the circulating flow of the preheating mode, and the first section of low-temperature tap water flows into a hot water pipe without being heated in time, so that the phenomenon of great temperature drop in the midway of the hot water faucet is caused; if the flow rate of the preheated water is larger or the temperature of tap water is lower, the temperature drop in the midway is larger, and the temperature drop of more than 10 ℃ can be generated in serious cases, so that the bathing experience of a user is directly influenced.
Disclosure of Invention
The invention solves one of the problems in the prior related art to a certain extent, and therefore the invention aims to provide a control method of a water heater, which can effectively reduce the temperature drop.
The above purpose is realized by the following technical scheme:
a control method of a water heater comprises the following steps:
step S100, entering a half-pipe preheating mode;
step S101, detecting whether the real-time preheating parameter reaches a product value of a preheating coefficient and a first preheating parameter, wherein the preheating coefficient is less than or equal to 0.5;
if yes, go to step S102; if not, returning to the step S101;
step S102, turning off the water pump, and acquiring real-time delay flameout time according to the real-time heating temperature rise;
step S103, continuously heating water in the water heater within the real-time delay flameout time;
in step S104, the gas control valve is closed.
As a further improvement of the present invention, the method for obtaining the real-time delay flameout time according to the heating temperature rise of the water in step S102 comprises:
acquiring real-time heating temperature rise;
if the real-time heating temperature rise is less than or equal to the preset minimum heating temperature rise, the real-time delay flameout time is the shortest preset delay flameout time;
if the real-time heating temperature rise is larger than the preset minimum heating temperature rise and smaller than the preset maximum heating temperature rise, the real-time delay flameout time is obtained through the following formula:
And if the real-time heating temperature rise is greater than the preset maximum heating temperature rise, the delay flameout time is the longest preset delay flameout time.
As a further improvement of the present invention, the method for obtaining the real-time heating temperature rise comprises:
and acquiring real-time heating temperature rise according to the difference value of the temperature of the preheated water and the temperature of the preheated water.
As a further improvement of the present invention, before step S100, the following steps are further included:
step S200, detecting whether a preheating function is started for the first time of the water heater;
if yes, go to step S201; if not, the step S100 is carried out;
step S201, entering a full-range preheating mode, controlling a water pump to work and opening a gas control valve;
step S100, entering a half-pipe preheating mode, controlling the water pump to work, and entering step S101 after the gas control valve is opened.
As a further improvement of the present invention, before step S101, the following steps are further included:
step S200, detecting whether a preheating function is started for the first time of the water heater;
if yes, go to step S201; if not, the step S100 is carried out;
step S201, entering a full-range preheating mode, controlling a water pump to work and opening a gas control valve;
step S100, entering a half-pipe preheating mode, controlling the water pump to work, and entering step S101 after the gas control valve is opened.
As a further improvement of the present invention, the following steps are also included after step S201:
step S202, detecting whether the backwater temperature is greater than the difference value between the preset temperature and the preheating temperature difference;
if yes, go to step S203; if not, returning to the step S202;
step S203, recording the first preheating parameters.
As a further improvement of the present invention, after step S203, the following steps are also included:
step S204, controlling the water pump to stop working;
step S205, detecting whether the water flow is less than the starting-up flow;
if yes, go to step S206; if not, go to step S207;
step S206, controlling the gas control valve to close, and entering a shower standby mode;
step S207, enter the shower operation mode.
As a further development of the invention, the first preheating parameters comprise a preheating time, and/or a preheating water quantity.
The invention aims to provide a water heater which can effectively reduce the temperature drop.
The water heater comprises a water heater body, wherein a water inlet pipe, a water outlet pipe and a heat exchange pipe are arranged in the water heater, the water inlet pipe, the heat exchange pipe and the water outlet pipe are sequentially communicated, the water heater further comprises a return water temperature probe, a water outlet temperature probe and a control assembly, the return water temperature probe is arranged on the water inlet pipe and used for monitoring return water temperature in real time, the water outlet temperature probe is arranged on the water outlet pipe and used for monitoring outlet water temperature in real time, and the control assembly is electrically connected with the gas control valve, the circulating pump, the return water temperature probe and the water outlet temperature probe respectively.
Compared with the prior art, the invention at least comprises the following beneficial effects:
1. the invention provides a control method of a water heater, which is characterized in that when a real-time preheating parameter reaches a product value of a preheating coefficient and a first preheating parameter, hot water is judged to be filled in a hot water pipe, a water pump is controlled to be closed, hot water can directly flow out when a user starts to use the water heater, zero cold water is realized, the preheating time is greatly shortened, the gas consumption of gas is reduced, and hot water is reduced from flowing into a water return pipe. After the water pump is turned off, the gas control valve is turned off through obtaining delay flameout time and delay control, after the water pump is turned off, water flow in the water heater can slowly flow under the action of inertia, the gas control valve is turned off in a delay mode, the water storage temperature of the heat exchange tube is improved, and temperature drop can be effectively reduced.
2. The invention provides a water heater, which realizes zero cold water, delays closing of a gas control valve, improves the water storage temperature of a heat exchange tube and can effectively reduce the temperature drop.
Drawings
FIG. 1 is a flow chart of a control method of a water heater according to an embodiment;
FIG. 2 is a schematic structural diagram of a water heater according to an embodiment;
FIG. 3 is a schematic view of the temperature drop in the example.
Detailed Description
The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications to the embodiments of the invention or equivalent substitutions of parts of technical features without departing from the spirit of the invention are intended to be covered by the scope of the claims of the invention.
The first embodiment is as follows:
referring to fig. 1 and 3, a control method of a water heater includes the following steps:
step S100, entering a half-pipe preheating mode,
step S101, detecting whether the real-time preheating parameter reaches a product value of a preheating coefficient and a first preheating parameter, wherein the preheating coefficient is less than or equal to 0.5;
if yes, go to step S102; if not, returning to the step S101;
step S102, turning off the water pump, and acquiring real-time delay flameout time according to the real-time heating temperature rise;
step S103, continuously heating water in the water heater within the real-time delay flameout time;
in step S104, the gas control valve is closed.
In the embodiment, the water heater comprises a water heater body, a water inlet pipe 1, a water outlet pipe 3, a heat exchange pipe 2, a gas control valve and a water pump arranged on the water inlet pipe, the water inlet pipe, the water outlet pipe and the heat exchange pipe are arranged in the water heater body, the water inlet pipe, the heat exchange pipe and the water outlet pipe are communicated in sequence, the water heater body is also internally provided with a heat exchanger, the heat exchange tube flows through the heat exchanger and also comprises a return water temperature probe, an outlet water temperature probe and a control component, the return water temperature probe is arranged on the water inlet pipe and is used for monitoring the return water temperature in real time, the water outlet temperature probe is arranged on the water outlet pipe and is used for monitoring the water outlet temperature in real time, the control assembly is respectively and electrically connected with the gas control valve, the water pump, the return water temperature probe and the water outlet temperature probe.
The water heater also comprises an outer water inlet pipe 4, a hot water pipe 6 and a water return pipe 5, and further comprises a water inlet connector and a water outlet connector, wherein the water inlet connector is installed on the water heater body and is respectively communicated with the outer water inlet pipe and the water inlet pipe, and the water outlet connector is installed on the water heater body and is respectively communicated with the water outlet pipe and the hot water pipe. One end of the outer water inlet pipe, which is far away from the water inlet connector, is communicated with an external water source, and the hot water pipe is communicated with the outer water inlet pipe through a water return pipe. Therefore, the hot water pipe, the water return pipe and the section of the outer water inlet pipe, which is positioned between the water return pipe and the water inlet joint, jointly form a circulating pipeline.
After the preheating mode is opened, the water pump is opened, the water stored in the water heater body flows through the heat exchange tube and the water outlet tube from the water inlet tube, flows through the heat exchange tube and the water outlet tube, flows out of the water outlet tube, flows through the hot water tube, the water return tube and the outer water inlet tube, and then enters the water inlet tube from the water inlet, so that circulation is formed.
The invention provides a control method of a water heater, wherein the water heater enters a half-pipe preheating mode, a water pump is controlled to work, a gas control valve is controlled to be opened, when a real-time preheating parameter reaches a product value of a preheating coefficient and a first preheating parameter, a hot water pipe is judged to be filled with hot water, the water pump is controlled to be closed, hot water can directly flow out when a user starts the water heater, zero cold water is realized, the preheating time is greatly shortened, the gas consumption of gas is reduced, and the hot water flowing into a water return pipe is reduced.
After the water pump is turned off, the gas control valve is turned off through obtaining delay flameout time and delay control, after the water pump is turned off, water flow in the water heater can slowly flow under the action of inertia, the gas control valve is turned off in a delay mode, the water storage temperature of the heat exchange tube is improved, and temperature drop can be effectively reduced.
In the half-pipe preheating mode, a part of residual water in the water heater body is fully preheated, in step S101, when the real-time preheating parameter reaches the product value of the preheating coefficient and the first preheating parameter, the fully preheated hot water is considered to be filled in the heating pipe, zero cold water can be realized when the water heater is started, when a user uses the water heater, the water in the hot water pipe flows out at first, and the requirement of the user on the zero cold water can be met.
However, as the residual water in the water heater is not fully preheated, and the water which is not fully preheated flows out along with the fully preheated water, the water flows out, so that a user feels that the temperature of the water is instantly reduced after the water heater is started for a short time, and the user experiences the process of hot water after hot water and cold water, and the user experience is reduced, as shown by a curve I in fig. 3, the temperature of the cold water is lower than that of the hot water, and after the water pump is closed, the fuel gas control valve is closed by obtaining the delay flameout time delay control, so that the temperature drop of the water temperature from the hot water to the cold water can be effectively reduced, as shown by a curve II in fig. 3.
In fig. 3, curve one is the variation curve of the water temperature for executing the half-pipe preheating mode without delayed shutdown; the second curve is a water temperature change curve for executing a half-pipe preheating mode and executing delayed shutdown; and the third curve is the water temperature change curve of the whole preheating mode. It can be seen that the temperature drop of the water used when the half-pipe preheating mode is executed and the delayed shutdown is executed is greatly reduced relative to the temperature drop of the water used when the half-pipe preheating mode is executed only without the delayed shutdown.
In step S100, a half pipe preheating mode is entered, and the water pump and the gas control valve are controlled to be opened.
The method for acquiring the real-time delay flameout time according to the heating temperature rise of the water in the step S102 comprises the following steps:
acquiring real-time heating temperature rise;
if the real-time heating temperature rise is less than or equal to the preset minimum heating temperature rise, the real-time delay flameout time is the shortest preset delay flameout time;
if the real-time heating temperature rise is larger than the preset minimum heating temperature rise and smaller than the preset maximum heating temperature rise, the real-time delay flameout time is obtained through the following formula:
And if the real-time heating temperature rise is greater than the preset maximum heating temperature rise, the delay flameout time is the longest preset delay flameout time.
The delay flameout time is obtained according to the real-time heating temperature rise, the temperature is lower in winter, the temperature of tap water is low, the temperature preset by a user is high, the real-time heating temperature rise is increased, the delay flameout time after the pump is turned off in the half-pipe preheating mode is increased along with the increase of the temperature, the water temperature of the heat exchange pipe is increased, and the hot water temperature drop can be greatly reduced during boiling water. Summer temperature is higher, and the running water temperature is high, and the user predetermines the temperature and hangs down, and the real-time heating temperature rise diminishes, then half pipe preheating mode's the time delay flame-out time of turning off behind the pump follow diminishes, can prevent that the heat exchange tube from depositing water temperature too high.
The invention adds the function of delayed flameout in the semi-tube preheating mode, and can preferably reduce the temperature drop to be within 2 ℃.
The method for acquiring the real-time heating temperature rise comprises the following steps:
and acquiring real-time heating temperature rise according to the difference value of the temperature of the preheated water and the temperature of the preheated water.
According to the formula Δ THeating of＝TAfter preheating-TBefore preheatingWherein Δ THeating ofFor heating the temperature rise in real time, TAfter preheatingFor the temperature of the preheated water, TBefore preheatingThe temperature of water before preheating.
Step S103, the step of continuously heating the water in the water heater within the real-time delay flameout time specifically comprises the following steps:
and continuously heating the water in the heat exchange tube within the real-time delay flameout time.
After step S103 and before step S104, the following steps are also included:
detecting whether the water flow is less than the starting flow
If yes, entering step S104, and entering a shower standby mode;
if not, entering a shower operation mode.
Here, the shower operation mode is entered: and keeping the gas control valve open, and restarting the water pump. The starting-up flow is 2.5L/min.
The method also comprises the following steps before the step S100:
step S200, detecting whether a preheating function is started for the first time of the water heater;
if yes, go to step S201; if not, the step S100 is carried out;
step S201, entering a full-range preheating mode.
In step S201, the whole warm-up mode is entered: controlling the water pump to work and opening the gas control valve.
When the water heater starts the preheating function for the first time, the first preheating parameter needs to be acquired, and the whole preheating mode needs to be entered; when the water heater is not started for the first time and the first preheating parameters are stored in the water heater, the water heater can directly enter a half-pipe preheating mode.
The following steps are also included after step S201:
step S202, detecting whether the backwater temperature is greater than the difference value between the preset temperature and the preheating temperature difference;
if yes, go to step S203; if not, returning to the step S202;
step S203, recording the first preheating parameters.
In step S203, the first preheating parameter includes a preheating time, and/or a preheating water amount.
In the whole preheating mode, the residual water in the water heater body is required to be heated to a preset temperature. In step S202, a preset temperature and a preheating temperature difference are set, so that the residual water in the water heater body can be heated to a difference value between the preset temperature and the preheating temperature difference.
That is, if the preset temperature is 50 ℃, the preheating temperature difference is 2 ℃, and the difference value between the preset temperature and the preheating temperature difference is 48 ℃, namely, the water is heated to more than 48 ℃.
If the preheating time is 5min and the preheating coefficient is 0.5 in the first preheating parameters, the preheating time is 2.5min in the subsequent half-pipe preheating mode, the time for a user to wait for preheating is greatly shortened, and the function of zero cold water can be ensured.
The following steps are also included after step S203:
step S204, controlling the water pump to stop working;
step S205, detecting whether the water flow is less than the starting-up flow;
if yes, go to step S206; if not, go to step S207;
step S206, controlling the gas control valve to close, and entering a shower standby mode;
step S207, enter the shower operation mode.
In step S205, the boot flow rate is 2.5L/min.
Example two:
as shown in fig. 2, the water heater comprises a water heater body, wherein a water inlet pipe 1, a water outlet pipe 3 and a heat exchange pipe 2 are arranged in the water heater, the water inlet pipe 1, the heat exchange pipe 2 and the water outlet pipe 3 are sequentially communicated, the water heater further comprises a return water temperature probe, a water outlet temperature probe and a control assembly, the return water temperature probe is arranged on the water inlet pipe 1 and used for monitoring return water temperature in real time, the water outlet temperature probe is arranged on the water outlet pipe 3 and used for monitoring outlet water temperature in real time, and the control assembly is respectively electrically connected with the gas control valve, the circulating pump, the return water temperature probe and the water outlet temperature probe.
The above preferred embodiments should be considered as examples of the embodiments of the present application, and technical deductions, substitutions, improvements and the like similar to, similar to or based on the embodiments of the present application should be considered as the protection scope of the present patent.
Claims (10)
1. A control method of a water heater is characterized by comprising the following steps:
step S100, entering a half-pipe preheating mode;
step S101, detecting whether the real-time preheating parameter reaches a product value of a preheating coefficient and a first preheating parameter, wherein the preheating coefficient is less than or equal to 0.5;
if yes, go to step S102; if not, returning to the step S101;
step S102, turning off the water pump, and acquiring real-time delay flameout time according to the real-time heating temperature rise;
step S103, continuously heating water in the water heater within the real-time delay flameout time;
in step S104, the gas control valve is closed.
2. The method for controlling a water heater according to claim 1, wherein the method for obtaining the real-time delay flameout time according to the heating temperature rise of the water in step S102 comprises:
acquiring real-time heating temperature rise;
if the real-time heating temperature rise is less than or equal to the preset minimum heating temperature rise, the real-time delay flameout time is the shortest preset delay flameout time;
if the real-time heating temperature rise is larger than the preset minimum heating temperature rise and smaller than the preset maximum heating temperature rise, the real-time delay flameout time is obtained through the following formula:
And if the real-time heating temperature rise is greater than the preset maximum heating temperature rise, the delay flameout time is the longest preset delay flameout time.
3. The control method of the water heater according to claim 2, wherein the method for acquiring the real-time heating temperature rise comprises the following steps:
and acquiring real-time heating temperature rise according to the difference value of the temperature of the preheated water and the temperature of the preheated water.
4. The control method of the water heater as claimed in claim 1, wherein the real-time delay flameout time is 2-5 seconds.
5. The control method of the water heater according to claim 1, further comprising the following steps before the step S100:
step S200, detecting whether a preheating function is started for the first time of the water heater;
if yes, go to step S201; if not, the step S101 is executed;
step S201, entering a full-range preheating mode.
6. The control method of the water heater according to claim 5, further comprising the following steps after entering the full warm-up mode:
step S202, detecting whether the backwater temperature is greater than the difference value between the preset temperature and the preheating temperature difference;
if yes, go to step S203; if not, returning to the step S202;
step S203, recording the first preheating parameters.
7. The control method of the water heater according to claim 6, further comprising the following steps after the step S203:
step S204, controlling the water pump to stop working;
step S205, detecting whether the water flow is less than the starting-up flow;
if yes, go to step S206; if not, go to step S207;
step S206, controlling the gas control valve to close, and entering a shower standby mode;
step S207, enter the shower operation mode.
8. The control method of a water heater as claimed in claim 1 or 6, wherein the first preheating parameter includes preheating time and/or preheating water amount.
9. The control method of a water heater according to claim 1, further comprising the following steps after step S103 and before step S104:
detecting whether the water flow is less than the starting flow
If yes, entering step S104, and entering a shower standby mode;
if not, entering a shower operation mode.
10. A water heater is characterized in that the control method of the water heater is applied to any one of claims 1 to 9, and comprises a water heater body, wherein a water inlet pipe, a water outlet pipe and a heat exchange pipe are arranged in the water heater, the water inlet pipe, the heat exchange pipe and the water outlet pipe are sequentially communicated, the control method further comprises a return water temperature probe, a water outlet temperature probe and a control assembly, the return water temperature probe is arranged on the water inlet pipe and used for monitoring return water temperature in real time, the water outlet temperature probe is arranged on the water outlet pipe and used for monitoring outlet water temperature in real time, and the control assembly is respectively and electrically connected with a fuel gas control valve, a circulating pump, the return water temperature probe and the water outlet temperature probe.
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| CN202111373454.XA CN114251839B (en) | 2021-11-19 | 2021-11-19 | Water heater control method and water heater |
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| CN110220313A (en) * | 2019-06-12 | 2019-09-10 | 华帝股份有限公司 | Gas water heater control method and gas water heater |
| CN112113346A (en) * | 2020-09-11 | 2020-12-22 | 华帝股份有限公司 | Preheating and heat-preserving control method for zero-cold-water gas water heater |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070010480A (en) * | 2005-07-19 | 2007-01-24 | 김용인 | Control method of hot-water supply apparatus for warm bath of lower half body |
| CN110220313A (en) * | 2019-06-12 | 2019-09-10 | 华帝股份有限公司 | Gas water heater control method and gas water heater |
| CN112113346A (en) * | 2020-09-11 | 2020-12-22 | 华帝股份有限公司 | Preheating and heat-preserving control method for zero-cold-water gas water heater |
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