CN114508860A - Control method of gas heating water heater - Google Patents
Control method of gas heating water heater Download PDFInfo
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- CN114508860A CN114508860A CN202210005221.2A CN202210005221A CN114508860A CN 114508860 A CN114508860 A CN 114508860A CN 202210005221 A CN202210005221 A CN 202210005221A CN 114508860 A CN114508860 A CN 114508860A
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- cleaning
- hot water
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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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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Combustion (AREA)
Abstract
The invention discloses a control method of a gas heating water heater, which is characterized in that heating pre-cleaning and hot water pre-cleaning are processed differently, and the heating pre-cleaning duration continues to use a fixed value; associating the hot water supply pre-cleaning with the last post-cleaning, and determining the hot water supply pre-cleaning according to the completion condition of the post-cleaning; under different conditions, different hot water supply pre-cleaning are adopted, and the hot water outlet speed under the conventional condition is increased; comprises heating pre-cleaning, hot water pre-cleaning and post-cleaning; the heating pre-cleaning time is a first preset time, the hot water pre-cleaning time is a second preset time, and the post-cleaning time is a third preset time; wherein the first preset time is less than or equal to the second preset time and less than the third preset time, and the first preset time is 5-15 s; the third preset time is 15s-30 s. The invention ensures the safety of products and the use safety of users, reduces the hot water waiting time of the users and improves the hot water performance of the products.
Description
Technical Field
The invention relates to the technical field of gas heating water heaters, in particular to a control method of a gas heating water heater.
Background
The gas heating water heater is used as a heat source for household heating, and becomes a preferred choice for northern family heating due to convenient use; the heating stove also has the function of supplying hot water, and can satisfy the hot water demand of water simultaneously. The heating stove uses combustible gas such as natural gas, reaches certain concentration when the mixture of combustible gas and air to can take place the detonation under specific condition, cause equipment damage, personnel's injury even. Therefore, before ignition, the pre-cleaning is carried out for enough time, the leaked fuel gas and residual flue gas in the combustion chamber are fully discharged, and the product safety and the use safety of users are ensured. For example, the invention provides a wall-hanging boiler front cleaning control method with the Chinese patent application number of 202010280849.4, and the method comprises the following steps: detecting whether the wall-mounted furnace meets the starting condition, if so, entering a front cleaning step, and otherwise, displaying a fault; starting a fan of the wall-mounted furnace, performing front cleaning, judging whether a flue is blocked or not, if so, closing the fan, displaying a fault, and if not, performing normal front cleaning; and opening the gas valve for ignition, continuing to detect a flame signal for a fourth preset time after igniting for a third preset time, closing the gas valve if the flame signal is not detected, igniting again to open the gas valve, and entering a combustion heating stage if the flame signal is detected. The wall-mounted boiler front cleaning control method provided by the patent can quickly discharge residual gas in a flue of the wall-mounted boiler, avoid ignition explosion and flue blockage faults, and reduce the waiting time of a user so as to save water resources. The disadvantage is that the fixed pre-cleaning time is shortened in any case, and the cleaning is insufficient.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provide the control method of the gas heating water heater, which is simple and convenient to operate, adopts different hot water supply pre-cleaning modes under different conditions and accelerates the hot water outlet speed under the conventional condition.
The invention adopts the following technical scheme to realize the purpose: a control method of a gas heating water heater is characterized in that heating pre-cleaning and hot water pre-cleaning are processed differently, and the heating pre-cleaning duration is kept constant; associating the hot water supply pre-cleaning with the last post-cleaning, and determining the hot water supply pre-cleaning according to the completion condition of the post-cleaning; under different conditions, different hot water supply pre-cleaning modes are adopted, and the hot water outlet speed under the conventional condition is accelerated.
The method specifically comprises heating pre-cleaning, hot water pre-cleaning and post-cleaning; the heating pre-cleaning time is a first preset time, the hot water pre-cleaning time is a second preset time, and the post-cleaning time is a third preset time; wherein the first preset time is less than or equal to the second preset time and less than the third preset time, and the first preset time is 5-15 s; the third preset time is 15-30 s; when hot water is needed, if the cleaning is complete after the last time, the sufficient cleaning of the combustion chamber can be ensured, the hot water pre-cleaning is not executed, and the hot water outlet speed is accelerated.
As a further explanation of the above scheme, the heating process specifically includes the following steps.
And A1, starting up, and performing self-test normally.
A2, judging whether a heating demand exists: if not, the step A2 is entered again; if yes, go to step A3.
A3, starting a fan, and judging whether the air volume is normal: if yes, go to step A4; if not, reporting the fault of the smoke exhaust system, and turning to the step A8.
And A4, performing heating pre-cleaning and waiting for completion.
A5, starting an ignition device and a gas valve, igniting successfully, and heating.
A6, after heating is finished, closing a gas valve; and performing post-cleaning.
And A7, finishing the post cleaning, and turning off the fan.
And A8, ending.
Further, the hot water supply process comprises the specific steps.
B1, power on and normal self-test.
B2, judging whether a hot water supply demand exists, if not, entering the step B2 again; if yes, go to step B3.
B3, starting the fan, and judging whether the air volume is normal: if yes, go to step B4; if not, reporting the fault of the smoke exhaust system, and turning to the step B9.
B4, judging that the cleaning is complete after the last time: if yes, go to step B6; if not, go to step B5.
And B5, performing hot water supply pre-cleaning and waiting for completion.
B6, starting an ignition device and a gas valve, successfully igniting and supplying hot water.
B7, completing hot water supply, and closing the gas valve; and performing post-cleaning.
B8, after cleaning, closing the fan.
And B9, ending.
Further, the condition for judging the completion of heating pre-cleaning is that the fan operates and the normal duration of the air volume is not less than the first preset time.
Further, the hot water supply pre-cleaning completion judgment condition is that the fan operates and the normal duration time of the air volume is not less than a second preset time.
Further, the last complete post-cleaning judgment condition is that the fan operates after the gas valve is closed for the last time and the normal duration of the wind pressure is not less than the third preset time.
When the fan is a constant speed fan, the judgment condition that the air quantity is normal is that the state of an air pressure switch matched with the constant speed fan is switched from off to on.
When the fan is a speed-regulating fan, the judgment condition that the air volume is normal is that the rotating speed of the speed-regulating fan is changed from being lower than a rotating speed preset value to being higher than the rotating speed preset value; and when the heating pre-cleaning, the hot water pre-cleaning and the post-cleaning are carried out, the maximum rotating speed limited by the fan is adopted, so that the cleaning speed of the air in the combustion chamber is increased.
When the fan is a speed-regulating fan, the judgment of normal air quantity can also be determined by the current of the fan and the rotating speed of the fan together.
If the power is turned on again, or the fault state is changed into the normal state, and the first heating requirement is hot water supply, hot water supply pre-cleaning is needed; the fault state is converted into the normal state, and automatic reset and manual reset are included; the faults comprise smoke exhaust system faults, flame feedback faults and abnormal ignition faults.
The invention adopts the technical scheme to achieve the beneficial effects.
The invention processes the heating pre-cleaning and the hot water pre-cleaning differently, and the heating pre-cleaning duration continues to use a fixed value; associating the pre-cleaning of the hot water supply with the last post-cleaning, and determining the pre-cleaning of the hot water supply according to the completion condition of the post-cleaning; through the cooperation of back and front sweeping and pre-sweeping, leaked fuel gas and residual flue gas in the combustion chamber can be fully discharged, and the product safety and the use safety of users are ensured; under different conditions, different hot water supply pre-cleaning are adopted, and the hot water outlet speed under the conventional condition is increased; meanwhile, the hot water waiting time of a user is reduced, and the hot water performance of the product is improved.
Drawings
Fig. 1 is a heating flow chart of the present invention.
Fig. 2 is a hot water supply flow chart of the present invention.
Detailed Description
In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.
Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the feature, and in the description of the invention, "at least" means one or more unless specifically defined otherwise.
In the present invention, unless otherwise explicitly defined or limited, the terms "assembled", "connected" and "connected" should be construed broadly and include, for example, fixed connections, detachable connections or integral connections; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
In the present invention, unless otherwise specified and limited, "above" or "below" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "above," "below," and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply an elevation which indicates a level of the first feature being higher than an elevation of the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.
The following describes the embodiments of the present invention with reference to the drawings of the specification, so that the technical solutions and the advantages thereof are more clear and clear. The embodiments described below are exemplary by referring to the drawings, are intended to explain the present invention, and should not be construed as limiting the present invention.
As shown in figure 1, the invention is a control method of a gas heating water heater, which distinguishes the heating pre-cleaning and the hot water pre-cleaning, and the heating pre-cleaning duration continues to use a fixed value; associating the hot water supply pre-cleaning with the last post-cleaning, and determining the hot water supply pre-cleaning according to the completion condition of the post-cleaning; under different conditions, different hot water supply pre-cleaning modes are adopted, and the hot water outlet speed under the conventional condition is increased; the method specifically comprises heating pre-cleaning, hot water pre-cleaning and post-cleaning; the heating pre-cleaning time is a first preset time, the hot water pre-cleaning time is a second preset time, and the post-cleaning time is a third preset time; wherein the first preset time is less than or equal to the second preset time and less than the third preset time, and the first preset time is 5 ss; the third preset time is 30 s; when hot water is needed, if the cleaning is complete after the last time, the sufficient cleaning of the combustion chamber can be ensured, the hot water pre-cleaning is not executed, and the hot water outlet speed is accelerated.
The heating process is as shown in fig. 1, and the specific steps are as follows.
And A1, starting up, and performing self-test normally.
A2, judging whether a heating demand exists: if not, the step A2 is entered again; if yes, go to step A3.
A3, starting a fan, and judging whether the air volume is normal: if yes, go to step A4; if not, reporting the fault of the smoke exhaust system, and turning to the step A8.
And A4, performing heating pre-cleaning and waiting for completion.
And A5, starting an ignition device and a gas valve, igniting successfully, and heating.
A6, after heating is finished, closing the gas valve; and performing post-cleaning.
And A7, finishing the post cleaning, and turning off the fan.
And A8, ending.
The hot water supply process is as shown in fig. 2, and the specific steps are as follows.
B1, power on and normal self-test.
B2, judging whether a hot water supply demand exists, if not, entering the step B2 again; if yes, go to step B3.
B3, starting the fan, and judging whether the air volume is normal: if yes, go to step B4; if not, reporting the fault of the smoke exhaust system, and turning to the step B9.
B4, judging that the cleaning is complete after the last time: if yes, go to step B6; if not, go to step B5.
And B5, performing hot water supply pre-cleaning and waiting for completion.
B6, starting an ignition device and a gas valve, successfully igniting and supplying hot water.
B7, completing hot water supply, and closing the gas valve; and performing post-cleaning.
B8, after cleaning, closing the fan.
And B9, ending.
The heating pre-cleaning completion judgment condition is that the fan operates and the normal duration of the air volume is not less than a first preset time; the hot water supply pre-cleaning completion judgment condition is that the fan operates and the normal duration of the air volume is not less than a second preset time; and the last complete post-cleaning judgment condition is that the fan operates after the gas valve is closed for the last time and the normal wind pressure duration is not less than the third preset time.
When the fan is a constant speed fan, the judgment condition of normal air volume is that the state of an air pressure switch matched with the constant speed fan is switched from off to on; when the fan is a speed-regulating fan, the judgment condition that the air volume is normal is that the rotating speed of the speed-regulating fan is changed from being lower than a rotating speed preset value to being higher than the rotating speed preset value; heating pre-cleaning, hot water pre-cleaning and post-cleaning are carried out at the maximum rotating speed limited by the fan, so that the cleaning speed of air in the combustion chamber is increased; when the fan is a speed-regulating fan, the judgment of normal air quantity can also be determined by the current of the fan and the rotating speed of the fan together.
If the power is turned on again, or the fault state is changed into the normal state, and the first heating requirement is hot water supply, hot water supply pre-cleaning is needed; the fault state is converted into the normal state, and automatic reset and manual reset are included; the faults comprise smoke exhaust system faults, flame feedback faults and abnormal ignition faults.
Compared with the prior art, the invention can fully discharge the leaked fuel gas and residual flue gas in the combustion chamber through the matching of back-front sweeping and pre-sweeping, ensures the safety of products and the use safety of users, reduces the hot water waiting time of the users and improves the hot water performance of the products.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (9)
1. A control method of a gas heating water heater is characterized in that heating pre-cleaning and hot water pre-cleaning are processed differently, and the heating pre-cleaning duration is kept constant; associating the hot water supply pre-cleaning with the last post-cleaning, and determining the hot water supply pre-cleaning according to the completion condition of the post-cleaning;
heating pre-cleaning, hot water pre-cleaning and post-cleaning; the heating pre-cleaning time is a first preset time, the hot water pre-cleaning time is a second preset time, and the post-cleaning time is a third preset time; wherein the first preset time is less than or equal to the second preset time and less than the third preset time, and the first preset time is 5-15 s; the third preset time is 15-30 s; when the hot water supply is needed, if the cleaning is complete after the last time, the hot water supply pre-cleaning is not executed.
2. The gas-fired heating water heater control method according to claim 1, wherein in the heating process, the specific steps are as follows:
a1, starting up, and self-checking normally;
a2, judging whether a heating demand exists: if not, the step A2 is entered again; if yes, go to step A3;
a3, starting a fan, and judging whether the air volume is normal: if yes, go to step A4; if not, reporting the fault of the smoke exhaust system, and turning to the step A8;
a4, heating and pre-cleaning, and waiting for completion;
a5, starting an ignition device and a gas valve, igniting successfully, and heating;
a6, after heating is finished, closing a gas valve; carrying out post-cleaning;
a7, after cleaning, closing the fan;
and A8, finishing.
3. The control method of the gas-fired heating water heater according to claim 1, wherein in the hot water supply process, the specific steps are as follows:
b1, starting up, and performing self-checking normally;
b2, judging whether a hot water supply demand exists, if not, entering the step B2 again; if yes, go to step B3;
b3, starting the fan, and judging whether the air volume is normal: if yes, go to step B4; if not, reporting the fault of the smoke exhaust system, and turning to the step B9;
b4, judging that the cleaning is complete after the last time: if yes, go to step B6; if not, go to step B5;
b5, supplying hot water for pre-cleaning, and waiting for completion;
b6, starting an ignition device and a gas valve, successfully igniting and supplying hot water;
b7, completing hot water supply, and closing the gas valve; carrying out post-cleaning;
b8, finishing the post cleaning, and closing the fan;
and B9, ending.
4. The gas-fired heating water heater control method according to claim 1, wherein the determination condition for completion of heating pre-purging is that the fan is operated and the duration of normal air volume is not less than a first preset time.
5. The gas-fired heating water heater control method according to claim 1, wherein the determination condition for completion of hot water supply pre-purging is that the fan is operated and the duration of normal air volume is not less than a second preset time.
6. The control method of the gas-fired heating water heater according to claim 1, wherein the determination condition that the cleaning completion is completed after the last time is that the fan is operated after the gas valve is turned off and the normal duration of the wind pressure is not less than a third preset time.
7. The method for controlling a gas-fired heating water heater according to claim 4, 5 or 6, wherein when the fan is a constant speed fan, the judgment condition that the air volume is normal is that a wind pressure switch state matched with the constant speed fan is changed from off to on.
8. The control method of the gas-fired heating water heater according to claim 4, 5 or 6, wherein when the fan is a speed-adjustable fan, the judgment condition that the air volume is normal is that the rotating speed of the speed-adjustable fan is changed from being lower than a preset rotating speed value to being higher than the preset rotating speed value; and the heating pre-cleaning, the hot water pre-cleaning and the post-cleaning are carried out by adopting the maximum rotating speed limited by the fan.
9. The control method of the gas-fired heating water heater according to claim 4, 5 or 6, wherein when the fan is a speed-adjustable fan, the judgment of normal air volume can be determined by the current of the fan and the rotating speed of the fan; if the power is turned on again, or the fault state is changed into the normal state, and the first heating requirement is hot water supply, hot water supply pre-cleaning is needed; the fault state is converted into the normal state, and automatic reset and manual reset are included; the faults comprise smoke exhaust system faults, flame feedback faults and abnormal ignition faults.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210005221.2A CN114508860A (en) | 2022-01-05 | 2022-01-05 | Control method of gas heating water heater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210005221.2A CN114508860A (en) | 2022-01-05 | 2022-01-05 | Control method of gas heating water heater |
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| CN114508860A true CN114508860A (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210005221.2A Pending CN114508860A (en) | 2022-01-05 | 2022-01-05 | Control method of gas heating water heater |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5671771A (en) * | 1995-02-27 | 1997-09-30 | Brandel; Charles F. | Hot water system |
| CN105605794A (en) * | 2016-02-22 | 2016-05-25 | 广东超人节能厨卫电器有限公司 | Sequential control method for rapidly starting forced-exhausting gas water heater |
| CN111351229A (en) * | 2020-02-26 | 2020-06-30 | 华帝股份有限公司 | Control method of gas water heater |
| CN111503900A (en) * | 2020-04-10 | 2020-08-07 | 华帝股份有限公司 | Wall-mounted boiler front cleaning control method |
| CN112797620A (en) * | 2020-12-18 | 2021-05-14 | 重庆海尔热水器有限公司 | Gas heating water heater and control method thereof |
-
2022
- 2022-01-05 CN CN202210005221.2A patent/CN114508860A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5671771A (en) * | 1995-02-27 | 1997-09-30 | Brandel; Charles F. | Hot water system |
| CN105605794A (en) * | 2016-02-22 | 2016-05-25 | 广东超人节能厨卫电器有限公司 | Sequential control method for rapidly starting forced-exhausting gas water heater |
| CN111351229A (en) * | 2020-02-26 | 2020-06-30 | 华帝股份有限公司 | Control method of gas water heater |
| CN111503900A (en) * | 2020-04-10 | 2020-08-07 | 华帝股份有限公司 | Wall-mounted boiler front cleaning control method |
| CN112797620A (en) * | 2020-12-18 | 2021-05-14 | 重庆海尔热水器有限公司 | Gas heating water heater and control method thereof |
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