CN111561786A - Preheating control method of zero-cold-water gas water heater - Google Patents
Preheating control method of zero-cold-water gas water heater Download PDFInfo
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- CN111561786A CN111561786A CN202010258717.1A CN202010258717A CN111561786A CN 111561786 A CN111561786 A CN 111561786A CN 202010258717 A CN202010258717 A CN 202010258717A CN 111561786 A CN111561786 A CN 111561786A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 373
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000008399 tap water Substances 0.000 claims description 15
- 235000020679 tap water Nutrition 0.000 claims description 15
- 125000004122 cyclic group Chemical group 0.000 claims description 13
- 239000002699 waste material Substances 0.000 abstract description 7
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002349 favourable 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
Abstract
The invention discloses a preheating control method of a zero-cold-water gas water heater, which comprises the following steps: when the preheating function of the water heater body is started for the first time, detecting the first water inlet temperature of the water heater body; when the inlet water temperature of the water heater body reaches a preset target temperature, acquiring a first working time t of the water heater body1(ii) a When the water inlet temperature of the water heater body is continuously greater than the stop temperature for a preset time, acquiring the second working time t of the water heater body2(ii) a According to the first working time t1And the second working time t2Obtaining the first preheating time T of the water heater body0(ii) a According to the first preheating time T0Calculating the circulating preheating time of the water heater body; when the preheating function of the water heater body is started again, controlling the water heater body to carry out circulating preheating according to the circulating preheating time of the water heater body; the preheating device can automatically obtain proper preheating time and reduce waste of water resources.
Description
Technical Field
The invention relates to the technical field of gas water heaters, in particular to a preheating control method of a zero-cold-water gas water heater.
Background
The gas water heater on the market at present generally has the circulation and preheats the function, when the gas water heater starts the circulation and preheats the function, the inside water pump of gas water heater can start, after the water pump starts, the rivers in the hot water pipeline flow, flow back to gas water heater through return water pipeline or running water pipeline, so as to form the circulation pipeline, after detecting there is the rivers signal the gas water heater starts the burning heating, can heat whole circulation pipeline's water to predetermineeing the target temperature after 3-5 minutes, when the user bathes the water, open the gondola water faucet and have hot water promptly, can not flow out cold water earlier, namely "zero" cold water.
However, at present, part of gas water heaters are through serving as the return water pipeline with the water supply pipeline, when gas water heater opened the circulation and preheat the function, just stop preheating when the temperature of intaking reaches preset target temperature, can lead to water supply pipeline to have hot water always from this, and user's demand cold water needs to wait for a long time to can cause the water waste, reduce user's use and experience.
Disclosure of Invention
The invention aims to solve at least one of the problems in the prior related art to a certain extent, and therefore the invention aims to provide a preheating control method of a zero-cold-water gas water heater, which can automatically obtain appropriate preheating time, reduce water resource waste and improve the use experience of users.
The above purpose is realized by the following technical scheme:
a preheating control method of a zero-cold water gas water heater comprises a water heater body, a tap water pipeline and a hot water pipeline, wherein one end of each of the tap water pipeline and the hot water pipeline is connected with the water heater body, and the other end of each of the tap water pipeline and the hot water pipeline is connected with a water consumption point, and the control method comprises the following steps:
when the preheating function of the water heater body is started for the first time, detecting the first water inlet temperature of the water heater body;
when the inlet water temperature of the water heater body reaches a preset target temperature, acquiring a first working time t of the water heater body1；
When the hot water is usedWhen the water inlet temperature of the water heater body is continuously preset for a time longer than the stop temperature, acquiring the second working time t of the water heater body2；
According to the first working time t1And the second working time t2Obtaining the first preheating time T of the water heater body0Wherein T is0＝t2-t1；
According to the first preheating time T0Calculating the circulating preheating time of the water heater body;
and when the water heater body restarts the preheating function, controlling the water heater body to perform circulating preheating according to the circulating preheating time of the water heater body.
In some embodiments, the preset target temperature ranges from 35 ℃ to 50 ℃.
In some embodiments, the stopping temperature is calculated according to the following equation:
if the water inlet temperature is lower than the water inlet temperature (the preset target temperature is-10 ℃), the stopping temperature is lower than the preset target temperature of-5 ℃;
if the water inlet temperature is lower than (the preset target temperature is-15 ℃), the stopping temperature is-10 ℃;
if the water inlet temperature is not less than (the preset target temperature is-10 ℃), the stopping temperature is equal to the first preheating time T0+5℃。
In some embodiments, the cycle warm-up time is calculated according to the following equation:
T1＝T0/2；
wherein T is1For the cyclic preheating time, T, of the water heater body0The first preheating time of the water heater body.
In some embodiments, when the water heater body restarts the preheating function, the cyclic preheating time is calculated according to the following formula:
T1＝(T0/2)×K；
wherein T is1For the cyclic preheating time, T, of the water heater body0The first preheating time of the water heater body is K, and K is a compensation coefficient.
In some embodiments, the compensation factor is determined according to the following equation:
if the temperature of 10 ℃ is higher than (the current water inlet temperature-the first water inlet temperature) and is higher than 5 ℃, K is 0.9-1;
if the temperature of 10 ℃ is higher than (the first water inlet temperature-the current water inlet temperature) > 5 ℃, K is 1.1-1.2;
and if the temperature (the first water inlet temperature-the current water inlet temperature) is more than 10 ℃, controlling the water heater body to restart and starting the preheating function for the first time.
In some embodiments, the cycle warm-up time is calculated according to the following equation:
T1＝T0×K；
wherein T is1For the cyclic preheating time, T, of the water heater body0The first preheating time of the water heater body is K, the compensation coefficient is K, and K is 0.5-0.6.
In some embodiments, when the inlet water temperature of the water heater body is greater than the stop temperature for a preset time, the second working time t of the water heater body is obtained2The method comprises the following specific steps:
obtaining a first working time t of the water heater body1Then, after controlling the water heater body to work for a set time, detecting whether the water inlet temperature of the water heater body lasts for a preset time and is greater than a stop temperature;
when the water inlet temperature of the water heater body is continuously greater than the stop temperature for a preset time, acquiring the second working time t of the water heater body2。
In some embodiments, the set time is 10 to 30 seconds and the preset time is 1 to 20 seconds.
Compared with the prior art, the invention at least comprises the following beneficial effects:
1. the preheating control method of the zero-cold-water gas water heater can automatically obtain the appropriate preheating time, reduce the waste of water resources and improve the use experience of users.
Drawings
FIG. 1 is a schematic structural diagram of a gas water heater according to a first embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating the preheating function of the gas water heater during the first startup in the embodiment of the invention;
FIG. 3 is a schematic flow chart illustrating the preheating function of the gas water heater for restarting in the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a gas water heater according to a second embodiment of the present invention.
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: as shown in fig. 1 and fig. 2, in the present embodiment, a preheating control method for a zero-cold-water gas water heater is provided, where the gas water heater includes a water heater body 1, a tap water pipeline 2 and a hot water pipeline 3, where one end of the tap water pipeline 2 and one end of the hot water pipeline 3 are both connected to the water heater body 1, and the other end of the tap water pipeline 2 and the other end of the hot water pipeline 3 are connected to a water consumption point 4, and in the present embodiment, as shown in fig. 1, the tap water pipeline 2 serves as a water return pipeline, and when the gas water heater starts a circulating preheating function, water preheated by the water heater body 1 is controlled to circulate in a loop formed by the hot;
the control method comprises the following steps:
when the preheating function is started for the first time, the first water inlet temperature of the water heater body 1 is detected, specifically, the water heater body 1 is electrified to start preheating for the first time, preferably, a user is guaranteed not to use the gas water heater for half an hour before electrifying, a water pump in the water heater body 1 is started after the water heater body 1 is electrified, after the water pump is started, the first water inlet temperature of the water heater body 1 is obtained and stored, when the water inlet quantity of the water heater body 1 in 8 seconds is larger than 2.5L/min, a gas valve of the water heater body 1 is opened and ignited, the water heater body 1 is controlled according to the preset target temperature, combustion heating is carried out according to the preset target temperature, and when the water inlet quantity of the water heater body 1 in 8 seconds is smaller than 2.5L/min, abnormal alarm is carried out, for example, the water pump is alarmed abnormal or a;
when the inlet water temperature of the water heater body 1 reaches a preset target temperature, acquiring the first working time t of the water heater body 11Specifically, the first operation time t1The method comprises the steps of (1) accumulating time from the time when a preheating function is started for the first time to the time when the water inlet temperature of the water heater body 1 reaches a preset target temperature;
when the water inlet temperature of the water heater body 1 is continuously greater than the stop temperature for a preset time, acquiring the second working time t of the water heater body 12In particular, the second operating time t2Starting the preheating function for the first time of the water heater body 1 until the water inlet temperature of the water heater body 1 lasts for a preset time longer than the accumulated time when the temperature is stopped; specifically, the first working time t of the water heater body 1 is obtained1Then, after controlling the water heater body 1 to work for a set time, detecting whether the water inlet temperature of the water heater body 1 lasts for a preset time longer than the stop temperature; when the water inlet temperature of the water heater body 1 is continuously greater than the stop temperature for a preset time, acquiring the second working time t of the water heater body 12If the water inlet temperature of the water heater body 1 is not continuously greater than the stop temperature for the preset time, continuously detecting whether the water inlet temperature of the water heater body 1 is continuously greater than the stop temperature for the preset time; in this embodiment, the set time is 10 to 30 seconds, the preset time is 1 to 20 seconds, and specifically, the first working time t of the water heater body 1 is obtained1Then, after the water heater body 1 is controlled to work for 20 seconds, detecting whether the water inlet temperature of the water heater body 1 is continuously higher than the stop temperature for 5 seconds; when the inlet water temperature of the water heater body 1 lasts for 5 seconds and is greater than the stop temperature, acquiring the second working time t of the water heater body 12If the water inlet temperature of the water heater body 1 is not continuously greater than the stop temperature for 5 seconds, continuously detecting whether the water inlet temperature of the water heater body 1 is continuously greater than the stop temperature for 5 seconds; therefore, the hot water pipeline 3 can be ensured to be filled with hot water;
according to the first working timeTime t1And a second operating time t2Obtain the first preheating time T of the water heater body 10Wherein T is0＝t2-t1In particular, the first preheating time T0The water inlet temperature of the water heater body 1 reaches a preset target temperature and the water inlet temperature of the water heater body 1 lasts for a preset time longer than the stop temperature;
according to the first preheating time T0Calculating the circulating preheating time T of the water heater body 11Specifically, when the water inlet temperature of the water heater body 1 is continuously preset for a time longer than the stop temperature, the water heater body 1 is controlled to stop preheating, the gas valve of the water heater body 1 is closed and flameout is performed, and then the circulating preheating time T of the water heater body 1 is calculated in an accumulated manner1；
Storage cycle preheat time T1In particular, T1＝T0/2；
When the water heater body 1 restarts the preheating function, the preheating function is started according to the circulating preheating time T of the water heater body 11And controlling the water heater body 1 to perform circulating preheating.
The preheating control method of the zero-cold-water gas water heater can automatically obtain appropriate preheating time, reduce water resource waste and improve the use experience of users.
Specifically, when a user starts the preheating function for the first time, the total preheating time of the pipeline is calculated after the preheating of the gas water heater is completed, the time is memorized, and then the preheating is stopped when the preheating function is used and the preheating time is more than 1/2. Because the lengths of the tap water pipeline 2 and the hot water pipeline 3 are basically equal, at this time, the hot water pipeline 3 is filled with hot water, and the tap water pipeline 2 is still cold water, so that a user does not need to wait for a long time when needing cold water, the phenomenon of water resource waste can be reduced, and the purpose of improving the use experience of the user is achieved.
In the present embodiment, the preset target temperature is in the range of 35 ℃ to 50 ℃, and further, the stop temperature is calculated according to the following formula:
if the water inlet temperature is lower than the water inlet temperature (the preset target temperature is-10 ℃), the stopping temperature is lower than the preset target temperature of-5 ℃;
if the water inlet temperature is lower than (the preset target temperature is-15 ℃), the stopping temperature is-10 ℃;
if the water inlet temperature is not less than (the preset target temperature is-10 ℃), the stopping temperature is equal to the first preheating time T0+5℃。
Above-mentioned reasonable in design, ingenious can calculate through predetermineeing the target temperature and obtain the stop temperature to in the bathing water that the user obtained the temperature suitable, do benefit to and improve user's use experience.
Preferably, when the preheating function of the water heater body is started again, the cyclic preheating time T is calculated and obtained according to the following formula1：
T1＝(T0/2)×K；
Wherein T is1For the cyclic preheating time, T, of the water heater body 10The first preheating time of the water heater body 1 is K, and K is a compensation coefficient. The compensation coefficient K is favorable for improving the acquisition cycle preheating time T1The accuracy of the water heater further enables the hot water pipeline 3 to be filled with hot water and the tap water pipeline 2 to be cold water after the water heater body 1 starts the preheating function again, so that the water heater does not need to wait for a long time when a user needs the cold water, the phenomenon of water resource waste can be reduced, and the purpose of improving the use experience of the user is achieved.
More preferably, the compensation factor K is determined according to the following formula:
if the temperature is higher than (the current water inlet temperature-the first water inlet temperature) > 5 ℃, the external environment temperature is increased, the heat loss is reduced, and K is 0.9-1;
if the temperature of 10 ℃ is higher than (the first water inlet temperature-the current water inlet temperature) > 5 ℃, the external environment temperature is reduced, the heat loss is increased, and K is 1.1-1.2;
if the temperature (the first water inlet temperature-the current water inlet temperature) > 10 ℃ indicates that the external environment temperature is obviously reduced and the heat loss is excessive, the water heater body 1 is controlled to restart and the preheating function is started for the first time, namely the stored first water inlet temperature needs to be deleted, the water heater body 1 is re-started and the preheating function is started for the first time after the water heater is electrified again, and the first water inlet temperature is obtained again and is updated and stored.
In addition, the cycle preheating time T can be obtained by other means or formulas1The cycle preheating time T can be obtained by calculation according to the following formula, for example1：
T1＝T0×K；
Wherein T is1For the cyclic preheating time, T, of the water heater body 10The first preheating time of the water heater body 1 is shown, K is a compensation coefficient, and K is 0.5-0.6. Because the tap water pipeline and the hot water pipeline of part of users may have difference, the circulation preheating time T1The size of the water heater can be properly increased so that after the preheating function of the water heater body 1 is started again, the hot water pipeline 3 can be filled with hot water, and the tap water pipeline 2 is still cold water, namely, the hot water pipeline 3 is ensured to be filled with hot water.
As shown in fig. 3, the step of restarting the preheating function of the water heater body 1 includes:
when the water heater body 1 starts the preheating function again, the water pump in the water heater body 1 is started after the water heater body 1 is powered on, after the water pump is started, the current water inlet temperature of the water heater body 1 is obtained, the current water inlet temperature is compared with the first water inlet temperature, the compensation coefficient K is determined according to the comparison result, and the lower the current water inlet temperature is, the larger the compensation coefficient K is; when the water inflow of the water heater body 1 is more than 2.5L/min in 8 seconds, a gas valve of the water heater body 1 is opened and ignited, the water heater body 1 is controlled according to a preset target temperature, combustion heating is carried out according to the preset target temperature, and when the water inflow of the water heater body 1 is less than 2.5L/min in 8 seconds, abnormal alarm is carried out, such as alarm of water pump abnormality or pipeline blockage;
when the inlet water temperature of the water heater body 1 reaches a preset target temperature, acquiring the first working time t of the water heater body 11Specifically, the first operation time t1The accumulated time from when the preheating function of the water heater body 1 is started again to when the water inlet temperature of the water heater body 1 reaches the preset target temperature is calculated;
when the water inlet temperature of the water heater body 1 is continuously greater than the preset timeWhen the temperature is stopped, the second working time t of the water heater body 1 is obtained2In particular, the second operating time t2When the preheating function of the water heater body 1 is started again, the water inlet temperature of the water heater body 1 lasts for the preset time longer than the accumulated time when the temperature is stopped; specifically, the first working time t of the water heater body 1 is obtained1Then, after controlling the water heater body 1 to work for a set time, detecting whether the water inlet temperature of the water heater body 1 lasts for a preset time longer than the stop temperature; when the water inlet temperature of the water heater body 1 is continuously greater than the stop temperature for a preset time, acquiring the second working time t of the water heater body 12If the water inlet temperature of the water heater body 1 is not continuously greater than the stop temperature for the preset time, continuously detecting whether the water inlet temperature of the water heater body 1 is continuously greater than the stop temperature for the preset time; in this embodiment, the set time is 10 to 30 seconds, the preset time is 1 to 20 seconds, and specifically, the first working time t of the water heater body 1 is obtained1Then, after the water heater body 1 is controlled to work for 20 seconds, detecting whether the water inlet temperature of the water heater body 1 is continuously higher than the stop temperature for 5 seconds; when the inlet water temperature of the water heater body 1 lasts for 5 seconds and is greater than the stop temperature, acquiring the second working time t of the water heater body 12If the water inlet temperature of the water heater body 1 is not continuously greater than the stop temperature for 5 seconds, continuously detecting whether the water inlet temperature of the water heater body 1 is continuously greater than the stop temperature for 5 seconds; therefore, the hot water pipeline 3 can be ensured to be filled with hot water;
according to the first working time t1And a second operating time t2Obtaining the current circulation preheating time T of the water heater body 12Judgment of T2Whether or not greater than T1× K, wherein T1The cycle preheating time is K, and the compensation coefficient is K;
if T2＞T1× K, controlling the water heater body 1 to stop preheating, closing the gas valve of the water heater body 1, extinguishing the fire, and ending the preheating function, if T is2＜T1× K, when the inlet water temperature of the water heater body 1 reaches the preset target temperature, the first working time t of the water heater body 1 is obtained1The step (2).
Example two: as shown in fig. 4, the present embodiment provides a preheating control method for a zero-cold-water gas water heater, which is different from the first embodiment in that the preheating control method further includes a water return pipeline 5, one end of the water return pipeline 5 is connected to the water heater body 1, and the other end of the water return pipeline 5 is connected to a water consumption point 4 farthest from the water heater body 1, and when the gas water heater starts a circulating preheating function, water preheated by the water heater body 1 is controlled to circulate in a loop formed by the hot water pipeline 3, the water return pipeline 5 and the water heater body 1, so as to perform circulating preheating.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (9)
1. A preheating control method of a zero-cold water gas water heater comprises a water heater body, a tap water pipeline and a hot water pipeline, wherein one end of each of the tap water pipeline and the hot water pipeline is connected with the water heater body, and the other end of each of the tap water pipeline and the hot water pipeline is connected with a water consumption point, and the control method comprises the following steps:
when the preheating function of the water heater body is started for the first time, detecting the first water inlet temperature of the water heater body;
when the inlet water temperature of the water heater body reaches a preset target temperature, acquiring a first working time t of the water heater body1；
When the water inlet temperature of the water heater body is continuously greater than the stop temperature for a preset time, acquiring the second working time t of the water heater body2；
According to the first working time t1And the second working time t2Obtaining the first preheating time T of the water heater body0Wherein T is0＝t2-t1；
According to the first preheating time T0Calculating the circulating preheating time of the water heater body;
and when the water heater body restarts the preheating function, controlling the water heater body to perform circulating preheating according to the circulating preheating time of the water heater body.
2. The preheating control method of the zero-cold-water gas water heater as claimed in claim 1, wherein the preset target temperature is in a range of 35 ℃ to 50 ℃.
3. The preheating control method of a zero-cold-water gas water heater as claimed in claim 2, wherein the stop temperature is calculated according to the following formula:
if the water inlet temperature is lower than the water inlet temperature (the preset target temperature is-10 ℃), the stopping temperature is lower than the preset target temperature of-5 ℃;
if the water inlet temperature is lower than (the preset target temperature is-15 ℃), the stopping temperature is-10 ℃;
if the water inlet temperature is not less than (the preset target temperature is-10 ℃), the stopping temperature is equal to the first preheating time T0+5℃。
4. The preheating control method of the zero-cold-water gas water heater as claimed in claim 1, wherein the cyclic preheating time is calculated according to the following formula:
T1＝T0/2；
wherein T is1For the cyclic preheating time, T, of the water heater body0The first preheating time of the water heater body.
5. The preheating control method of the zero-cold-water gas water heater as claimed in claim 4, wherein when the preheating function of the water heater body is started again, the cyclic preheating time is calculated according to the following formula:
T1＝(T0/2)×K；
wherein T is1For the cyclic preheating time, T, of the water heater body0The first preheating time of the water heater body is K, and K is a compensation coefficient.
6. The method of claim 5, wherein the compensation factor is determined according to the following equation:
if the temperature of 10 ℃ is higher than (the current water inlet temperature-the first water inlet temperature) and is higher than 5 ℃, K is 0.9-1;
if the temperature of 10 ℃ is higher than (the first water inlet temperature-the current water inlet temperature) > 5 ℃, K is 1.1-1.2;
and if the temperature (the first water inlet temperature-the current water inlet temperature) is more than 10 ℃, controlling the water heater body to restart and starting the preheating function for the first time.
7. The preheating control method of the zero-cold-water gas water heater as claimed in claim 1, wherein the cyclic preheating time is calculated according to the following formula:
T1＝T0×K；
wherein T is1For the cyclic preheating time, T, of the water heater body0The first preheating time of the water heater body is K, the compensation coefficient is K, and K is 0.5-0.6.
8. The preheating control method of zero-cold-water gas water heater as claimed in any one of claims 1 to 7, wherein when the inlet water temperature of the water heater body is continuously greater than the stop temperature for a preset time, the second working time t of the water heater body is obtained2The method comprises the following specific steps:
obtaining a first working time t of the water heater body1Then, after controlling the water heater body to work for a set time, detecting whether the water inlet temperature of the water heater body lasts for a preset time and is greater than a stop temperature;
when the water inlet temperature of the water heater body is continuously greater than the stop temperature for a preset time, acquiring the second working time t of the water heater body2。
9. The preheating control method of the zero-cold-water gas water heater as claimed in claim 8, wherein the preset time is 10-30 seconds, and the preset time is 1-20 seconds.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112283954A (en) * | 2020-10-22 | 2021-01-29 | 中山百得厨卫有限公司 | Water heater outlet water temperature compensation method and water heater |
| CN113701355A (en) * | 2021-08-24 | 2021-11-26 | 广东万和新电气股份有限公司 | Gas water heating system and control method thereof |
| CN113834218A (en) * | 2021-09-26 | 2021-12-24 | 华帝股份有限公司 | Preheating control method of gas water heater and gas water heater |
| CN114963543A (en) * | 2021-02-19 | 2022-08-30 | 芜湖美的厨卫电器制造有限公司 | Water heater, control method thereof and computer storage medium |
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Application publication date: 20200821 |