CN110186194A - Control method for self-adaptive wind pressure of gas water heater - Google Patents
Control method for self-adaptive wind pressure of gas water heater Download PDFInfo
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- CN110186194A CN110186194A CN201810394661.5A CN201810394661A CN110186194A CN 110186194 A CN110186194 A CN 110186194A CN 201810394661 A CN201810394661 A CN 201810394661A CN 110186194 A CN110186194 A CN 110186194A
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- pressure
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- 238000000034 method Methods 0.000 title claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 9
- 230000003044 adaptive effect Effects 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 6
- 239000007789 gas Substances 0.000 description 30
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000005662 electromechanics Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
Classifications
-
- 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 control method of self-adaptive wind pressure for a gas water heater, which is characterized in that the corresponding relation between the current value of a proportional valve and the pressure taking value of a wind pressure sensor is preset, and at least one current compensation interval is divided by the current of a fan from small to large, wherein each current compensation interval corresponds to a target pressure value; when the controller is started, the controller selects a certain proportional valve current value corresponding to the pressure value of the wind pressure sensor from the corresponding relation between the proportional valve current value of the gas water heater and the pressure value of the wind pressure sensor as an initial target regulation pressure, and the fan works with the initial current; and then, when the controller determines that the pressure value of the external wind pressure detected by the wind pressure sensor changes with a preset reference, the controller compensates the current of the fan. The invention can adjust the rotating speed of the fan according to the change of the wind pressure in real time and always ensure the air required by the normal operation of the gas water heater.
Description
Technical field
The invention belongs to gas heater technical fields, and in particular to a kind of adaptive wind pressure for gas heater
Control method.
Background technique
In domestic gas instantaneous water heater operational process, the flue gas that fuel gas buring generates has certain harm to human body, because
Outdoor need to be discharged in this in time；In domestic gas-fired water heater relevant criterion, also clear stipulaties gas heater needs Wind-Pressure Resistance 80Pa
More than, it is therefore an objective to it maintains gas heater when certain external wind is flowed backward, also normal combustion and flue gas can be discharged outward.But
The especially high-rise buildings under practical service environment, extraneous wind pressure it is bigger and and it is unstable, when external wind is flowed backward to a certain extent,
Air needed for fan capacity is not enough to provide normal combustion, just will appear that flue gas is exceeded, influence normally making for gas heater
With.
Summary of the invention
In view of this, the main purpose of the present invention is to provide a kind of controls of adaptive wind pressure for gas heater
Method.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
The embodiment of the present invention provides a kind of control method of adaptive wind pressure for gas heater, this method are as follows: pre-
The pressure value corresponding relationship of first Set scale valve current value and wind pressure sensor and by blower electric current according to dividing from small to large
At least one current compensation section, the corresponding target pressure value in each current compensation section；
When starting, controller is in the proportioning valve current value of gas heater and the pressure value corresponding relationship of wind pressure sensor
The pressure value for selecting a certain proportioning valve current value to correspond to wind pressure sensor adjusts pressure and blower as initial target with initial
Electric current works；Later, when the controller determines that wind pressure sensor detects the pressure value and preset reference of extraneous wind pressure
Between when changing, the controller compensates blower electric current.
In above scheme, when the starting, proportioning valve current value and wind pressure sensor of the controller in gas heater
The pressure value for selecting a certain proportioning valve current value to correspond to wind pressure sensor in pressure value corresponding relationship adjusts pressure as initial target
Power, specifically: in each fire row active section of gas heater, is determined and be somebody's turn to do according to the proportioning valve current value under different load
The corresponding relationship curve of the pressure value of wind pressure sensor when under gas heater optimum working state, according to fitting function to described
Corresponding relationship curve, which is fitted, obtains at least one proportioning valve electric current section, and when starting, the controller selection is described at least
The pressure value that a proportioning valve current value corresponds to wind pressure sensor in one proportioning valve electric current section is adjusted as initial target presses
Power.
In above scheme, when the pressure value corresponding relationship for presetting proportioning valve current value and wind pressure sensor and
When by blower electric current according at least two current compensation sections is divided from small to large, the blower is mended at least two electric current
The smallest current compensation section in section is repaid to work.
It is described when the controller determines that wind pressure sensor detects the pressure value of extraneous wind pressure and default in above scheme
When changing between benchmark, the controller compensates blower electric current, specifically: when the controller determines that wind pressure passes
When sensor detects that the pressure value of extraneous wind pressure is greater than the corresponding target pressure value in any one current compensation section, the control
Device selects the current compensation section bigger than the current compensation section and with the corresponding blower electric current in high compensation current compensation section
It compensates.
In above scheme, it is described by blower electric current according to dividing at least two current compensation sections from small to large, specifically:
Blower electric current is divided at least two current compensation sections from initial blower electric current to maximum blower electric current, wherein described initial
The corresponding target pressure value of blower electric current is exactly that initial target adjusts pressure；It is adjacent between at least two current compensation section
Region be provided with overlapping region as return difference section.
In above scheme, this method further include: when the controller detects taking for extraneous wind pressure according to wind pressure sensor
After pressure value chooses maximum current compensation section, if external wind presses through big and wind pressure sensor pressure value and drops to report
Alert pressure threshold simultaneously maintains the several seconds, and the controller carries out fault alarm processing；The alarm pressure threshold value is lower than initial target
Adjust pressure.
In above scheme, when the pressure value corresponding relationship for presetting proportioning valve current value and wind pressure sensor and
When by blower electric current according at least two current compensation sections is divided from small to large, the blower is in the case of without extraneous wind pressure
Minimum blower electric current works in blower electric current and the corresponding relationship of target pressure value.
It is described when the controller determines that wind pressure sensor detects the pressure value of extraneous wind pressure and default in above scheme
When changing between benchmark, the controller compensates blower electric current, specifically: when the controller determines that wind pressure passes
Sensor detects a certain target pressure value in the pressure value and blower electric current and the corresponding relationship of target pressure value of extraneous wind pressure
Timing, the controller select the corresponding blower electric current of the target pressure value to compensate.
In above scheme, the corresponding relationship for presetting blower electric current and target pressure value, specifically: by blower electricity
Stream is corresponding in turn to a target pressure value from initial blower electric current to maximum blower electric current, wherein the initial blower electric current pair
The target pressure value answered is exactly that initial target adjusts pressure；The target pressure value determines every according to functional relation P=K*If+C
The corresponding target pressure value of one blower electric current, wherein P is the target pressure value under firm demand, and unit Pa, If are wind
Electromechanics stream, C are constant, K is proportionality coefficient.
In above scheme, this method further include: when the controller detects taking for extraneous wind pressure according to wind pressure sensor
After pressure value chooses maximum blower electric current in blower electric current and the corresponding relationship of target pressure value and maintains the several seconds, the controller
Carry out fault alarm processing.
Compared with prior art, the present invention is fired by wind pressure sensor real-time monitoring external wind buckling to gas heater
Burning situation bring influences, and can change adjustment rotation speed of fan according to wind pressure in real time, be always ensured that gas heater operates normally
Required air；It can adapt to various strong wind and high-rise environment.
Detailed description of the invention
Fig. 1 is a kind of flow chart of the control method for the gas heater that the embodiment of the present invention 1 provides adaptive wind pressure；
Fig. 2 is the wind pressure when the proportioning valve current value determination under different load is under the gas heater optimum working state
The corresponding relationship curve of the pressure value of sensor；
Fig. 3 is by blower electric current according to the corresponding relationship in the three current compensation sections divided from small to large；
Fig. 4 is a kind of flow chart of the control method for the gas heater that the embodiment of the present invention 2 provides adaptive wind pressure；
Fig. 5 is by blower electric current according to the corresponding relationship from small to large with the pressure value of wind pressure sensor.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment 1
The embodiment of the present invention 1 provides a kind of control method of gas heater based on the adaptive wind pressure, such as Fig. 1
Shown, this method is realized by following steps:
Step 101: presetting the pressure value corresponding relationship and blower electric current of proportioning valve current value and wind pressure sensor
With the corresponding relationship of target pressure value；
Specifically, true according to the proportioning valve current value under different load in each fire row active section of gas heater
The corresponding relationship curve (as shown in Figure 2) of the pressure value of wind pressure sensor when under the fixed and gas heater optimum working state,
The corresponding relationship curve is fitted according to fitting function and obtains at least one proportioning valve electric current section.
For being fitted three proportioning valve electric current sections, as shown in Fig. 2, according to the proportioning valve current value under different load
The corresponding relationship curve of the pressure value of wind pressure sensor is the song in Fig. 2 when under the determining and gas heater optimum working state
Line part, respectively according to P=k*Ib+c, I1 < Ib < I2, P=k1*Ib+c1, I2 < Ib < I3, P=k2*Ib+c2, I3 < Ib < I4
Fitting formed three proportioning valve electric current sections, be Fig. 2 in three sections of oblique lines, wherein P be wind pressure sensor pressure value, Ib,
I1, I2, I3, I4 are that proportioning valve current value c, c1, c2 are constant.
As shown in figure 3, it is described by blower electric current according to dividing at least two current compensation sections from small to large, specifically:
Blower electric current is divided at least two current compensation sections from initial blower electric current to maximum blower electric current, wherein described initial
The corresponding target pressure value of blower electric current is exactly that initial target adjusts pressure.
Adjacent region is provided with overlapping region as return difference section between at least two current compensation section, prevents
Frequent switching between the boundary in two current compensation sections, improves the stability of control in control process.
By taking Fig. 3 as an example, initial blower electric current If1 to maximum blower electric current If6 point is [If1, If3],
[If2, If5], [If4, If6], wherein [If1, If3] corresponds to a target pressure value P4, [If2, If5] corresponding one
A target pressure value P5, [If4, If6] corresponding target pressure value P6.
In the lesser situation of extraneous wind pressure of gas heater, blower electric current is in [If1, If3], target pressure constant at this time
Force value is P4, and in the biggish situation of water heater external world wind pressure, blower electric current is in [If2, If5], goal pressure constant at this time
Value is P5, and in the great situation of water heater external world wind pressure, blower electric current exists
[If4, If6], target pressure value constant at this time is P6, wherein [If2, If3], [If4, If5] is switching setting
The return difference section of pressure value enhances stability.The selection of P4, P5, P6 are closed according to the actual compensation operating condition of gas heater
Reason is chosen.
Step 102: when starting, controller is in the proportioning valve current value of gas heater and the pressure value pair of wind pressure sensor
It should be related to that the middle pressure value for selecting a certain proportioning valve current value to correspond to wind pressure sensor adjusts pressure and wind as initial target
Machine is worked with the smallest current compensation section.
Specifically, when starting, the controller selects a proportioning valve electricity at least one described proportioning valve electric current section
The pressure value that flow valuve corresponds to wind pressure sensor adjusts pressure as initial target.
Step 103: when the controller determines that wind pressure sensor detects that the pressure value of extraneous wind pressure is greater than any one
When the corresponding target pressure value in current compensation section, the controller selects the current compensation section bigger than the current compensation section
And it is compensated with the corresponding blower electric current in height compensation current compensation section.
Specifically, if the controller detects that the pressure value of extraneous wind pressure is less than any one current compensation section pair
The target pressure value answered and when to be presently in current compensation section not be the smallest current compensation section, the controller selection
Blower electric current is adjusted less than any one corresponding target pressure value in current compensation section.
If the controller detects that the pressure value of extraneous wind pressure is less than any one corresponding mesh in current compensation section
Mark pressure value and when to be presently in current compensation section be the smallest current compensation section, the controller is not to blower electric current
It is adjusted.
Further, when the controller according to wind pressure sensor detect extraneous wind pressure pressure value choose it is maximum
Behind current compensation section, if external wind presses through big and wind pressure sensor pressure value and drops to alarm pressure threshold value and maintain
Several seconds, the controller carry out fault alarm processing；The alarm pressure threshold value adjusts pressure lower than initial target.
Specifically, as shown in figure 3, P7 is alarm pressure threshold value.
Embodiment 2
The embodiment of the present invention 2 provides a kind of control method of gas heater based on the adaptive wind pressure, such as Fig. 4
Shown, this method is realized by following steps:
Step 201: presetting the pressure value corresponding relationship and blower electric current of proportioning valve current value and wind pressure sensor
With the corresponding relationship of target pressure value；
Specifically, true according to the proportioning valve current value under different load in each fire row active section of gas heater
The corresponding relationship curve (as shown in Figure 2) of the pressure value of wind pressure sensor when under the fixed and gas heater optimum working state,
The corresponding relationship curve is fitted according to fitting function and obtains at least one proportioning valve electric current section.
For being fitted three proportioning valve electric current sections, as shown in Fig. 2, according to the proportioning valve current value under different load
The corresponding relationship curve of the pressure value of wind pressure sensor is the song in Fig. 2 when under the determining and gas heater optimum working state
Line part, respectively according to P=k*Ib+c, I1 < Ib < I2, P=k1*Ib+c1, I2 < Ib < I3, P=k2*Ib+c2, I3 < Ib < I4
Fitting formed three proportioning valve electric current sections, be Fig. 2 in three sections of oblique lines, wherein P be wind pressure sensor pressure value, Ib,
I1, I2, I3, I4 are that proportioning valve current value c, c1, c2 are constant.
The corresponding relationship for presetting blower electric current and target pressure value, specifically: by blower electric current from initial wind
Electromechanics flow to maximum blower electric current and is corresponding in turn to a target pressure value, wherein the corresponding target pressure of the initial blower electric current
Force value is exactly that initial target adjusts pressure；The target pressure value determines each blower electricity according to functional relation P=K*If+C
Flow corresponding target pressure value, wherein P is the target pressure value under firm demand, and unit Pa, If are blower electric current, C is normal
Number, K are proportionality coefficient；To guarantee decimal of the stability K value of system between [0,1].
By taking Fig. 5 as an example, initial blower electric current If1 to maximum blower electric current If6 respectively corresponds target pressure value P8 to P9,
P8 to P9 is also gradually to increase.
Step 202: when starting, controller is in the proportioning valve current value of gas heater and the pressure value pair of wind pressure sensor
It should be related to that the middle pressure value for selecting a certain proportioning valve current value to correspond to wind pressure sensor adjusts pressure and institute as initial target
It states blower and work is carried out with blower electric current minimum in the corresponding relationship without the blower electric current in the case of extraneous wind pressure and target pressure value
Make.
Specifically, when starting, the controller selects a proportioning valve electricity at least one described proportioning valve electric current section
The pressure value that flow valuve corresponds to wind pressure sensor adjusts pressure as initial target.
The acquisition process of the corresponding relationship without the blower electric current in the case of extraneous wind pressure and target pressure value are as follows: utilize
When controller is preset without extraneous wind pressure, in the water heater proportioning valve current value Ib of a certain fixation, a corresponding rotation speed of fan VF
(flue gas and the thermal efficiency are in optimum state at this time), and each rotation speed of fan VF can be corresponding with a blower electric current, as without
The corresponding relationship of blower electric current in the case of extraneous wind pressure and target pressure value.
Further, the blower is in the corresponding relationship without the blower electric current in the case of extraneous wind pressure and target pressure value
Minimum blower electric current works, and also can choose without the pass corresponding with target pressure value of the blower electric current in the case of extraneous wind pressure
Any one in system is as the driving blower work of initial blower electric current.
Step 203: when the controller determine wind pressure sensor detect extraneous wind pressure pressure value and blower electric current with
When a certain target pressure value matches in the corresponding relationship of target pressure value, the controller selects the corresponding wind of the target pressure value
Electromechanical stream compensates.
Specifically, if the controller detects that the pressure value of extraneous wind pressure is less than any one current compensation section pair
The target pressure value answered and when to be presently in current compensation section not be the smallest current compensation section, the controller selection
Blower electric current is adjusted less than any one corresponding target pressure value in current compensation section.
If the controller detects that the pressure value of extraneous wind pressure is less than any one corresponding mesh in current compensation section
Mark pressure value and when to be presently in current compensation section be the smallest current compensation section, the controller is not to blower electric current
It is adjusted.
Further, when the controller detects that the pressure value of extraneous wind pressure chooses blower electricity according to wind pressure sensor
After flowing maximum blower electric current in the corresponding relationship with target pressure value and maintaining the several seconds, the controller is carried out at fault alarm
Reason.
Certainly, wind pressure sensor described in embodiment 1,2 can also be used for using other sensors or sensing device
Monitoring obtains extraneous wind pressure.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (10)
1. a kind of control method of the adaptive wind pressure for gas heater, which is characterized in that this method are as follows: preset ratio
The pressure value corresponding relationship of example valve current value and wind pressure sensor and by blower electric current according to dividing at least one from small to large
Current compensation section, the corresponding target pressure value in each current compensation section；
When starting, controller selects in the proportioning valve current value of gas heater and the pressure value corresponding relationship of wind pressure sensor
The pressure value that a certain proportioning valve current value corresponds to wind pressure sensor adjusts pressure and blower as initial target with initial current
It works；Later, when the controller determines that wind pressure sensor detects between the pressure value of extraneous wind pressure and preset reference
When changing, the controller compensates blower electric current.
2. the control method of the adaptive wind pressure according to claim 1 for gas heater, which is characterized in that described
When starting, controller selects a certain in the proportioning valve current value of gas heater and the pressure value corresponding relationship of wind pressure sensor
The pressure value that proportioning valve current value corresponds to wind pressure sensor adjusts pressure as initial target, specifically: in gas heater
Each fire row active section, according under the determination of proportioning valve current value and the gas heater optimum working state under different load
When wind pressure sensor pressure value corresponding relationship curve, acquisition is fitted to the corresponding relationship curve according to fitting function
At least one proportioning valve electric current section, when starting, the controller selects at least one described proportioning valve electric current section one
The pressure value that proportioning valve current value corresponds to wind pressure sensor adjusts pressure as initial target.
3. the control method of the adaptive wind pressure according to claim 2 for gas heater, which is characterized in that work as institute
State the pressure value corresponding relationship for presetting proportioning valve current value and wind pressure sensor and by blower electric current according to from small to large
When dividing at least two current compensation sections, the blower is with the smallest current compensation at least two current compensation section
Section works.
4. the control method of the adaptive wind pressure according to claim 3 for gas heater, which is characterized in that described
When the controller determine wind pressure sensor detect change between the pressure value of extraneous wind pressure and preset reference when, it is described
Controller compensates blower electric current, specifically: when the controller determines that wind pressure sensor detects taking for extraneous wind pressure
When pressure value is greater than the corresponding target pressure value in any one current compensation section, the controller selection is than the current compensation section
It big current compensation section and is compensated with the corresponding blower electric current in height compensation current compensation section.
5. the control method of the adaptive wind pressure according to claim 4 for gas heater, which is characterized in that described
By blower electric current according to dividing at least two current compensation sections from small to large, specifically: by blower electric current from initial blower electricity
It flow to maximum blower electric current and divides at least two current compensation sections, wherein the corresponding goal pressure of the initial blower electric current
Value is exactly that initial target adjusts pressure；Adjacent region is provided with overlapping region work between at least two current compensation section
For return difference section.
6. the control method of the adaptive wind pressure according to claim 5 for gas heater, which is characterized in that the party
Method further include: when the controller detects that the pressure value of extraneous wind pressure chooses maximum current compensation according to wind pressure sensor
Behind section, if external wind presses through big and wind pressure sensor pressure value and drops to alarm pressure threshold value and maintain the several seconds, institute
It states controller and carries out fault alarm processing；The alarm pressure threshold value adjusts pressure lower than initial target.
7. the control method of the adaptive wind pressure according to claim 2 for gas heater, which is characterized in that work as institute
State the pressure value corresponding relationship for presetting proportioning valve current value and wind pressure sensor and by blower electric current according to from small to large
When dividing at least two current compensation sections, the blower is without the blower electric current and target pressure value in the case of extraneous wind pressure
Minimum blower electric current works in corresponding relationship.
8. the control method of the adaptive wind pressure according to claim 7 for gas heater, which is characterized in that described
When the controller determine wind pressure sensor detect change between the pressure value of extraneous wind pressure and preset reference when, it is described
Controller compensates blower electric current, specifically: when the controller determines that wind pressure sensor detects taking for extraneous wind pressure
When pressure value is matched with blower electric current with a certain target pressure value in the corresponding relationship of target pressure value, the controller selects the mesh
The corresponding blower electric current of mark pressure value compensates.
9. the control method of the adaptive wind pressure according to claim 8 for gas heater, which is characterized in that described
The corresponding relationship of blower electric current and target pressure value is preset, specifically: by blower electric current from initial blower electric current to maximum
Blower electric current is corresponding in turn to a target pressure value, wherein the corresponding target pressure value of the initial blower electric current is exactly initial
Target adjusts pressure；The target pressure value determines each corresponding target of blower electric current according to functional relation P=K*If+C
Pressure value, wherein P is the target pressure value under firm demand, and unit Pa, If are blower electric current, C is constant, K is ratio system
Number.
10. the control method of the adaptive wind pressure according to claim 9 for gas heater, which is characterized in that should
Method further include: when the controller detects that the pressure value of extraneous wind pressure chooses blower electric current and mesh according to wind pressure sensor
After marking maximum blower electric current in the corresponding relationship of pressure value and maintaining the several seconds, the controller carries out fault alarm processing.
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| CN201810394661.5A CN110186194B (en) | 2018-04-27 | 2018-04-27 | Control method for self-adaptive wind pressure of gas water heater |
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| CN201810394661.5A CN110186194B (en) | 2018-04-27 | 2018-04-27 | Control method for self-adaptive wind pressure of gas water heater |
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Cited By (4)
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| CN114811958A (en) * | 2022-02-18 | 2022-07-29 | 广东万和热能科技有限公司 | Wall-mounted furnace control method, device and equipment and computer readable storage medium |
| CN114963495A (en) * | 2021-06-23 | 2022-08-30 | 青岛经济技术开发区海尔热水器有限公司 | Gas water heater with upward-pumping type direct-current fan and control method thereof |
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| CN112524636A (en) * | 2020-11-30 | 2021-03-19 | 芜湖美的厨卫电器制造有限公司 | Control method and device of gas water heater, gas water heater and storage medium |
| CN114963495A (en) * | 2021-06-23 | 2022-08-30 | 青岛经济技术开发区海尔热水器有限公司 | Gas water heater with upward-pumping type direct-current fan and control method thereof |
| CN114963495B (en) * | 2021-06-23 | 2023-07-14 | 青岛经济技术开发区海尔热水器有限公司 | Upward-pumping type direct-current fan gas water heater and control method thereof |
| CN114811958A (en) * | 2022-02-18 | 2022-07-29 | 广东万和热能科技有限公司 | Wall-mounted furnace control method, device and equipment and computer readable storage medium |
| CN114811958B (en) * | 2022-02-18 | 2024-03-15 | 广东万和热能科技有限公司 | Control method, device and equipment of wall-mounted furnace and computer readable storage medium |
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| CN110186194B (en) | 2021-05-18 |
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