CN113834218A - Preheating control method of gas water heater and gas water heater - Google Patents
Preheating control method of gas water heater and gas water heater Download PDFInfo
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- CN113834218A CN113834218A CN202111127950.7A CN202111127950A CN113834218A CN 113834218 A CN113834218 A CN 113834218A CN 202111127950 A CN202111127950 A CN 202111127950A CN 113834218 A CN113834218 A CN 113834218A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 194
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 238000005070 sampling Methods 0.000 claims description 15
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000003756 stirring Methods 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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Abstract
The invention discloses a preheating control method of a gas water heater and the gas water heater. The preheating control method of the gas water heater comprises the following steps: s1: starting the water heater; s2: judging whether the inlet water temperature is less than a preset water temperature T1, if so, entering S3, otherwise, repeating S2; s3: the preheating function of the gas water heater is started for the first time; s4: judging whether the effluent temperature is larger than or equal to the target water temperature T, if so, entering S5, and if not, repeating S4; s5: judging whether the circulation loop circulates for one circle, if so, entering S6, and if not, repeating S5; s6: calculating the gas consumption P1 of one circle of circulation of the circulation loop; s7: judging whether the preheating function is started for the second time, if so, entering S8, and if not, not starting the preheating function; s8: and (4) judging whether the air consumption reaches mP1 and whether the total heating time is greater than the target time t, if so, stopping preheating, and if not, repeating S8. The gas water heater provided by the invention operates by adopting the preheating control method.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a preheating control method of a gas water heater and the gas water heater.
Background
The gas water heater on the market at present generally has the circulation function of preheating, when the gas water heater starts the circulation function of preheating, 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 circuit, after detecting there is the rivers signal gas water heater starts the burning heating, can heat whole circulation circuit'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, can not flow out cold water earlier, namely "zero" cold water.
However, at present, partial gas water heater is 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, preheating time is long, and can lead to water supply pipeline to have hot water always, and user's demand cold water needs wait for longer time to can cause the water waste, reduce user's use and experience.
Therefore, a preheating control method for a gas water heater is needed to solve the above problems.
Disclosure of Invention
The invention aims to solve one of the problems in the prior related art at least to a certain extent, and therefore the invention provides a preheating control method of a gas water heater, which has the advantages of shorter preheating time, shorter waiting time for a user when needing cold water and less waste of water resources.
The above purpose is realized by the following technical scheme:
a preheating control method of a gas water heater comprises the following steps:
s1: starting the water heater;
s2: judging whether the inlet water temperature is less than a preset water temperature T1, if so, entering S3, otherwise, repeating S2;
s3: the preheating function of the gas water heater is started for the first time;
s4: judging whether the effluent temperature is larger than or equal to the target water temperature T, if so, entering S5, and if not, repeating S4;
s5: judging whether the circulation loop circulates for one circle, if so, entering S6, and if not, repeating S5;
s6: calculating the gas consumption P1 of one circle of circulation of the circulation loop;
s7: judging whether the preheating function is started for the second time, if so, entering S8, and if not, not starting the preheating function;
s8: and (4) judging whether the air consumption reaches mP1 and whether the total heating time is greater than the target time t, if so, stopping preheating, and if not, repeating S8.
Optionally, in S5, the specific step of determining whether the circulation loop has circulated for one circle is as follows:
s51, sampling a group of inlet water temperature values at intervals of a first preset time t1, sampling the latest n groups of inlet water temperature values a [0], a [1] … a [ n ], summing Sum [0] + a [1] … a [ n ], wherein the sampling time of a [0] is the latest, and the sampling time of a [ n ] is the earliest;
s52, discarding the inlet water temperature value a [ n ], a [ n ] -1, a [ n-1] ═ a [ n-2], … …, a [1] ═ a [0], a [0] -the current value, and collecting the summation values of the inlet water temperature values of the latest M groups, sum [1], sum [2], and … sum [ M ];
s53, judging whether sum [0] > sum [1] > sum [2] … sum [8] sum [ M ], if yes, entering S54, and if not, returning to S51;
s54, collecting the latest inlet water temperature T2 of the gas water heater, judging whether the latest inlet water temperature T2 is greater than sum 0/10 + N degrees, if yes, entering S55, and if not, returning to S51;
s55: and sampling the sum sigma of a group of inlet water temperature values and outlet water temperature values every second preset time T2, judging whether sigma/2 is larger than the target temperature T, if so, judging that the circulation loop circulates for one circle, and if not, repeating S55.
Optionally, N is 2.
Optionally, the preset water temperature T1 is equal to the target water temperature T — a preset temperature value T2.
Optionally, the preset temperature value T2 is 10 degrees.
Optionally, the step S8 is followed by the step S9: judging whether the preheating function is started for the Y-th time, if so, returning to the step S8,
optionally, in S9, it is determined whether the preheating function is started for the Y-th time, and if not, the method proceeds to the following steps:
s10: judging whether the Y-th starting of the preheating function is exceeded, if yes, entering S11, and if not, not starting the preheating function;
s11: judging whether the average water temperature of the circulation loop is larger than the target temperature, if so, entering S12, otherwise, repeating S11;
s12: and (4) judging whether the total heating time is greater than the target time t, if so, stopping preheating, and otherwise, repeating the step (S12).
Optionally, Y is 3.
Optionally, in S5, after determining that the circulation loop has circulated once, the method further includes S51: the water pump of the water heater continues to operate for a third preset time t 3.
Optionally, during the preheating process, the following step S13 is further included: and detecting the water flow in real time, if the water flow suddenly increases by the preset amount L, clearing the data in the preheating operation, exiting the preheating mode and entering the common shower mode, and if not, repeating the step S13.
Optionally, m is 0.5.
The invention also provides a gas water heater which operates by adopting the preheating control method.
Compared with the prior art, the invention at least comprises the following beneficial effects:
according to the preheating method of the gas water heater, provided by the invention, when the gas water heater is preheated for the first time, the gas consumption P1 when the circulation loop circulates for one circle is calculated, so that when the gas water heater is preheated for the second time, whether the gas consumption reaches mP1 or not is calculated, and whether the heating time is greater than the target time t or not is calculated, so that the completion of the second preheating is directly judged, the rapid preheating of water in a hot water pipe of the gas water heater is realized, cold water in a water return pipe (a cold water pipe) is not heated, namely, the problem that when the existing gas water heater is preheated, water in the circulation loop is continuously heated until the water in the circulation loop reaches the preset temperature, namely, the hot water pipe and the water return pipe are filled with hot water and then stop, and therefore, a user needs to wait for a long time when the cold water needs to be used is solved, and the waste of water resources is little.
Drawings
Fig. 1 is a step diagram of a preheating control method for a gas water heater according to an 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.
Referring to fig. 1, the present invention provides a preheating control method for a gas water heater, including the following steps:
s1: starting the water heater;
s2: judging whether the inlet water temperature is less than a preset water temperature T1, if so, entering S3, otherwise, repeating S2;
s3: the preheating function of the gas water heater is started for the first time;
s4: judging whether the effluent temperature is larger than or equal to the target water temperature T, if so, entering S5, and if not, repeating S4;
s5: judging whether the circulation loop circulates for one circle, if so, entering S6, and if not, repeating S5;
s6: calculating the gas consumption P1 of one circle of circulation of the circulation loop;
s7: judging whether the preheating function is started for the second time, if so, entering S8, and if not, not starting the preheating function;
s8: and (4) judging whether the air consumption reaches mP1 and whether the total heating time is greater than the target time t, if so, stopping preheating, and if not, repeating S8.
According to the preheating method of the gas water heater, provided by the invention, when the gas water heater is preheated for the first time, the gas consumption P1 when the circulation loop circulates for one circle is calculated, so that when the gas water heater is preheated for the second time, whether the gas consumption reaches mP1 or not is calculated, and whether the heating time is greater than the target time t or not is calculated, so that the completion of the second preheating is directly judged, the rapid preheating of water in a hot water pipe of the gas water heater is realized, cold water in a water return pipe (a cold water pipe) is not heated, namely, the problem that when the existing gas water heater is preheated, water in the circulation loop is continuously heated until the water in the circulation loop reaches the preset temperature, namely, the hot water pipe and the water return pipe are filled with hot water and then stop, and therefore, a user needs to wait for a long time when the cold water needs to be used is solved, and the waste of water resources is little.
Specifically, hot water heating heat is gas combustion heat — heat dissipation heat. And the hot water heating heat E is CM delta T, wherein E is the hot water heating heat, C is the specific heat capacity, M is the hot water quality, and delta T is the temperature change of the hot water. E ∞ Q × Δ T, E denotes a heat quantity of hot water, Q denotes a water flow rate, and Δ T denotes a temperature change of hot water, that is, E ═ Q × Δ T × K. The energy conversion efficiency K of the water heater is about 90 percent, namely the heating energy of the hot water is about kxfuel gas combustion energy. From this, k × gas combustion energy is equal to CM Δ T, and the gas combustion energy is proportional to the gas consumption P, i.e., the gas consumption P is proportional to the Q flow × Δ T, i.e., P may be equal to Q × Δ T × x, i.e., at a constant flow rate, the water temperature increase value may be controlled by controlling the gas consumption P.
Optionally, because in a general gas water heater, the hot water pipe and the return water pipe are the same in length, that is, when the gas water heater starts the preheating function for the second time, in the case of only heating water in the hot water pipe, the value of m may be 0.5, that is, only half of P1 may be needed to preheat water in the hot water pipe. Of course, in other embodiments, if the lengths of the hot water pipe and the return water pipe of the gas water heater are not the same, m may be set to other values, so that the air consumption amount just can preheat water in the hot water pipe.
Alternatively, in S5, the specific step of determining whether the circulation loop has circulated one turn is as follows:
s51, sampling a group of inlet water temperature values at intervals of a first preset time t1, sampling the latest n groups of inlet water temperature values a [0], a [1] … a [ n ], summing Sum [0] + a [1] … a [ n ], wherein the sampling time of a [0] is the latest, and the sampling time of a [ n ] is the earliest;
s52, discarding the inlet water temperature value a [ n ], a [ n ] -1, a [ n-1] ═ a [ n-2], … …, a [1] ═ a [0], a [0] -the current value, and collecting the summation values of the inlet water temperature values of the latest M groups, sum [1], sum [2], and … sum [ M ];
s53, judging whether sum [0] > sum [1] > sum [2] … sum [8] sum [ M ], if yes, entering S54, and if not, returning to S51;
s54, collecting the latest inlet water temperature T2 of the gas water heater, judging whether the latest inlet water temperature T2 is greater than sum 0/10 + N degrees, if yes, entering S55, and if not, returning to S51;
s55: and sampling the sum sigma of a group of inlet water temperature values and outlet water temperature values every second preset time T2, judging whether sigma/2 is larger than the target temperature T, if so, judging that the circulation loop circulates for one circle, and if not, repeating S55.
Optionally, in this embodiment, the first preset time t1 and the second preset time t2 are both 1 second. Of course, in other embodiments, the first preset time t1 and the second preset time t2 may take other values between 0.5 and 3 seconds, which is not limited herein.
Optionally, in this embodiment, N is 2, and certainly, in other embodiments, N may also take other values between 1 and 4, which is not limited herein.
Optionally, the preset water temperature T1 is the target water temperature T — the preset temperature value T2. By setting the preset temperature value T2, the problem that the temperature of water in the circulation loop is too high when the air is preheated for the first time, and the acquired air consumption P1 is inaccurate is avoided.
Optionally, in this embodiment, the preset temperature value T2 is 10 degrees, but in other embodiments, the preset temperature value T2 may also be set to other values from 8 to 15, which is not limited herein.
Optionally, the following step S9 is further included after S8: judging whether the preheating function is started for the Y-th time, if so, returning to the step S8,
optionally, in S9, it is determined whether the preheating function is started for the Y-th time, and if not, the method proceeds to the following steps:
s10: judging whether the Y-th starting of the preheating function is exceeded, if yes, entering S11, and if not, not starting the preheating function;
s11: judging whether the average water temperature of the circulation loop is larger than the target temperature, if so, entering S12, otherwise, repeating S11;
s12: and (4) judging whether the total heating time is greater than the target time t, if so, stopping preheating, and otherwise, repeating the step (S12).
Optionally, in this embodiment, Y is 3. Of course, in other embodiments, Y may also be set to any value above 2 or 4, and is not limited herein.
Optionally, in S5, after determining that the circulation loop has circulated once, the method further includes S51: and the water pump of the water heater continues to operate for a third preset time t3 to stir the water in the circulation loop uniformly, so that the temperature of the water in the circulation loop is consistent.
Optionally, during the preheating process, the following step S13 is further included: and detecting the water flow in real time, if the water flow suddenly increases by the preset amount L, clearing the data in the preheating operation, exiting the preheating mode and entering the common shower mode, and if not, repeating the step S13.
It should be noted that, in summer, if the temperature of the gas water heater is set too low, for example, 31 degrees, due to a high temperature in the water supply pipeline outside the gas water heater, for example, 30 degrees, during the preheating procedure, the sum Σ/2 of the inlet water temperature and the outlet water temperature may be greater than the target temperature T, and when this occurs, the gas water heater does not perform the operation of only preheating the water in the hot water pipe, but performs the general preheating procedure, that is, heats the water in the circulation loop, and stops heating until the inlet water temperature is greater than the target temperature.
In addition, after each power failure of the gas water heater, the gas consumption of single complete preheating needs to be collected again. If the power is not cut off for a long time, the complete preheating is needed to be carried out again after 10 to 20 days, and new air consumption is obtained.
The invention also provides a water heater which is operated by adopting the preheating control method.
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 (12)
1. The preheating control method of the gas water heater is characterized by comprising the following steps of:
s1: starting the water heater;
s2: judging whether the inlet water temperature is less than a preset water temperature T1, if so, entering S3, otherwise, repeating S2;
s3: the preheating function of the gas water heater is started for the first time;
s4: judging whether the effluent temperature is larger than or equal to the target water temperature T, if so, entering S5, and if not, repeating S4;
s5: judging whether the circulation loop circulates for one circle, if so, entering S6, and if not, repeating S5;
s6: calculating the gas consumption P1 of one circle of circulation of the circulation loop;
s7: judging whether the preheating function is started for the second time, if so, entering S8, and if not, not starting the preheating function;
s8: and (4) judging whether the air consumption reaches mP1 and whether the total heating time is greater than the target time t, if so, stopping preheating, and if not, repeating S8.
2. The preheating control method of the gas water heater as claimed in claim 1, wherein the specific steps of determining whether the circulation loop has circulated for one turn in S5 are as follows:
s51, sampling a group of inlet water temperature values at intervals of a first preset time t1, sampling the latest n groups of inlet water temperature values a [0], a [1] … a [ n ], summing Sum [0] + a [1] … a [ n ], wherein the sampling time of a [0] is the latest, and the sampling time of a [ n ] is the earliest;
s52, discarding the inlet water temperature value a [ n ], a [ n ] -1, a [ n-1] ═ a [ n-2], … …, a [1] ═ a [0], a [0] -the current value, and collecting the summation values of the inlet water temperature values of the latest M groups, sum [1], sum [2], and … sum [ M ];
s53, judging whether sum [0] > sum [1] > sum [2] … sum [8] sum [ M ], if yes, entering S54, and if not, returning to S51;
s54, collecting the latest inlet water temperature T2 of the gas water heater, judging whether the latest inlet water temperature T2 is greater than sum 0/10 + N degrees, if yes, entering S55, and if not, returning to S51;
s55: and sampling the sum sigma of a group of inlet water temperature values and outlet water temperature values every second preset time T2, judging whether sigma/2 is larger than the target temperature T, if so, judging that the circulation loop circulates for one circle, and if not, repeating S55.
3. The preheat control method for a gas water heater according to claim 2, wherein N is 2.
4. The preheating control method of a gas water heater according to claim 1, wherein the preset water temperature T1 is a target water temperature T-preset temperature value T2.
5. The preheating control method of the gas water heater as claimed in claim 4, wherein the preset temperature value T2 is 10 degrees.
6. The preheating control method of the gas water heater according to claim 1, further comprising the following step S9 after the step S8: and judging whether the preheating function is started for the Yth time, if so, returning to the step S8.
7. The preheating control method of the gas water heater according to claim 6, wherein in the step S9, whether the preheating function is started for the Y-th time is judged, and if not, the following steps are performed:
s10: judging whether the Y-th starting of the preheating function is exceeded, if yes, entering S11, and if not, not starting the preheating function;
s11: judging whether the average water temperature of the circulation loop is larger than the target temperature, if so, entering S12, otherwise, repeating S11;
s12: and (4) judging whether the total heating time is greater than the target time t, if so, stopping preheating, and otherwise, repeating the step (S12).
8. The preheat control method for a gas water heater according to claim 7, wherein Y is 3.
9. A warm-up control method for a water heater according to any one of claims 1 to 8, wherein the step S5, after determining that the circulation loop has circulated for one turn, further comprises the step S51: the water pump of the water heater continues to operate for a third preset time t 3.
10. A warm-up control method of a gas water heater according to any one of claims 1 to 8, characterized by further comprising the following S13: and detecting the water flow in real time, if the water flow suddenly increases by the preset amount L, clearing the data in the preheating operation, exiting the preheating mode and entering the common shower mode, and if not, repeating the step S13.
11. The preheating control method of a gas water heater according to any one of claims 1 to 8, wherein m is 0.5.
12. A gas water heater operating by the preheat control method of any one of claims 1 to 11.
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| CN202111127950.7A CN113834218B (en) | 2021-09-26 | 2021-09-26 | Preheating control method of gas water heater and gas water heater |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398055A (en) * | 2019-07-30 | 2019-11-01 | 华帝股份有限公司 | Zero-cold-water gas water heater capable of limiting preheating temperature and control method thereof |
| CN111174444A (en) * | 2020-02-25 | 2020-05-19 | 华帝股份有限公司 | Control method for intelligent preheating of zero-cold-water heater |
| CN111561786A (en) * | 2020-04-03 | 2020-08-21 | 华帝股份有限公司 | Preheating control method of zero-cold-water gas water heater |
| CN111795505A (en) * | 2020-06-01 | 2020-10-20 | 青岛经济技术开发区海尔热水器有限公司 | Preheating control method for gas water heater |
| CN112113345A (en) * | 2020-09-09 | 2020-12-22 | 华帝股份有限公司 | Method for judging completion of preheating cycle of gas water heater |
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- 2021-09-26 CN CN202111127950.7A patent/CN113834218B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398055A (en) * | 2019-07-30 | 2019-11-01 | 华帝股份有限公司 | Zero-cold-water gas water heater capable of limiting preheating temperature and control method thereof |
| CN111174444A (en) * | 2020-02-25 | 2020-05-19 | 华帝股份有限公司 | Control method for intelligent preheating of zero-cold-water heater |
| CN111561786A (en) * | 2020-04-03 | 2020-08-21 | 华帝股份有限公司 | Preheating control method of zero-cold-water gas water heater |
| CN111795505A (en) * | 2020-06-01 | 2020-10-20 | 青岛经济技术开发区海尔热水器有限公司 | Preheating control method for gas water heater |
| CN112113345A (en) * | 2020-09-09 | 2020-12-22 | 华帝股份有限公司 | Method for judging completion of preheating cycle of gas water heater |
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