CN111912123A - Full-premixing condensation wall-mounted furnace and control method thereof - Google Patents
Full-premixing condensation wall-mounted furnace and control method thereof Download PDFInfo
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- CN111912123A CN111912123A CN202010847459.0A CN202010847459A CN111912123A CN 111912123 A CN111912123 A CN 111912123A CN 202010847459 A CN202010847459 A CN 202010847459A CN 111912123 A CN111912123 A CN 111912123A
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N3/00—Regulating air supply or draught
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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
- F24H8/00—Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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Abstract
The invention relates to a control method of a full-premix condensation wall-mounted boiler, which comprises the following steps: acquiring a current fan rotating speed V1; acquiring an ion current I1 at a fan rotating speed V1; comparing the ionic current I1 with a preset ionic current minimum value I1min under the rotating speed V1 of the fan; if I1 is less than I1min, adjusting the fan to be a preset fan rotating speed minimum value Vmin; acquiring an ion current I2 under the rotating speed Vmin of the fan; comparing the ionic current I2 with a preset ionic current minimum value I2min under the rotating speed Vmin of the fan; if I2 is less than I2min, the burner is shut down; and if I2 is not less than I2min, maintaining the rotating speed of the fan at Vmin, and maintaining the combustor to work. Meanwhile, the invention also provides a full-premixing condensation wall-mounted boiler. The running state of the equipment is judged for multiple times according to the rotating speed of the fan and the ionic current, the fan is adjusted to the preset lowest rotating speed in the peak period of gas utilization, and if the flame state meets the lowest requirement, the combustor is enabled to work, so that the basic heating of a user is met.
Description
Technical Field
The invention relates to the technical field of heating equipment, in particular to a control method of a full-premix condensation wall-mounted boiler and the full-premix condensation wall-mounted boiler.
Background
The full-premixing condensation wall-mounted boiler mixes fuel gas and air required by combustion in advance, a fan blows the air mixture to a combustor, ignition is controlled by a control panel to be combusted on the surface of the combustor, heat energy is transferred to the outer surface of a coil pipe of a heat exchanger when high-temperature and high-humidity flue gas generated by combustion flows through, the heat exchanger transfers the heat energy to circulating water in an inner cavity after absorbing the heat energy, the circulating water in the inner cavity of the heat exchanger is driven by a water pump to circulate to transfer the heat energy to the tail end of a room heating radiator, and the temperature of the room is increased after absorbing the heat energy of the radiator. Because the coefficient of the fully premixed combustion excess air is between 1.1 and 1.3, the combusted smoke is high in temperature and humidity and low in dew point, water vapor in the smoke is easy to condense into water on the surface of a heat exchanger to release gasification latent heat, the condensation section of the heat exchanger absorbs the latent heat in the smoke, the smoke exhaust temperature of the wall-mounted furnace is controlled to be 50 to 70 ℃, and the heat efficiency is much higher than that of the common wall-mounted furnace.
To full premix condensation hanging stove, the fan is through pressure transfer and the servo regulation of gas valve body of premixer under different rotational speeds, and the air-fuel ratio is stable all the time and burns according to the stoichiometric ratio, but if the gas pipeline leads the menstrual flow inadequately and pipeline system dams, perhaps with the gas peak in the insufficient condition of tolerance, the air-fuel ratio imbalance will appear that the combustion noise is big, can not last the burning even, influences the user and heats basically. The traditional full-premixing condensation wall-mounted boiler detects the flame size of a burner by utilizing an ionic current feedback needle, and when the flame is smaller than a preset value, a current signal of the ionic current feedback needle is also lower than the preset value, so that the burner is closed. Therefore, in the northern heating season, in the peak period of air consumption, the air quantity is not enough, the flame is smaller under the condition of insufficient air quantity in the traditional full-premixing condensation wall-mounted boiler, the excess air coefficient is overlarge, the heat efficiency is lower, the burner is closed, and the basic heating of a user cannot be guaranteed.
Disclosure of Invention
Based on the control method, the operation state of the equipment is judged for multiple times according to the rotating speed of the fan and the ionic current, the fan is adjusted to the preset minimum rotating speed in the peak period of gas utilization, and if the flame state meets the minimum requirement, the combustor is kept working, so that the basic heating of a user is met.
A control method of a full-premix condensing wall-hanging furnace comprises the following steps:
s10: acquiring a current fan rotating speed V1;
s20: acquiring an ion current I1 at a fan rotating speed V1;
s30: comparing the ionic current I1 with a preset ionic current minimum value I1min under the rotating speed V1 of the fan; if I1 is less than I1min, adjusting the fan to be a preset fan rotating speed minimum value Vmin;
s40: acquiring an ion current I2 under the rotating speed Vmin of the fan;
s50: comparing the ionic current I2 with a preset ionic current minimum value I2min under the rotating speed Vmin of the fan; if I2 is less than I2min, the burner is shut down; and if I2 is not less than I2min, maintaining the rotating speed of the fan at Vmin, and maintaining the combustor to work.
According to the control method of the full-premixing condensation wall-mounted furnace, the ion current at the current fan rotating speed is obtained firstly, and is compared with the preset minimum value at the current fan rotating speed. If the current ionic current is smaller than the preset minimum ionic current value at the current fan rotating speed, adjusting the fan rotating speed to the preset minimum value, then judging whether the ionic current at the lowest fan rotating speed is within a preset reasonable range again, if the ionic current at the lowest fan rotating speed is smaller than the preset minimum ionic current value at the lowest fan rotating speed, judging the ionic current to be in an abnormal state, performing shutdown processing on the combustor, otherwise, judging the ionic current to be in a normal state at a gas consumption peak period, maintaining the fan rotating speed at the preset minimum value, and maintaining the combustor to work so as to ensure basic heating of a user. Through the design, the running state of the equipment is judged for many times according to the rotating speed of the fan and the ionic current, the fan is adjusted to the lowest preset rotating speed in the peak period of gas utilization, and if the flame state meets the lowest requirement, the combustor is enabled to maintain work, so that the basic heating of a user is met.
In one embodiment, in step S30, if I1 ≧ I1min, normal PI adjustment is performed according to the currently set heating temperature, and execution of step S40 is stopped.
In one embodiment, in step S50, if I2 < I2min, the burner is turned off, and after a preset time period t3, the burner is started again, and the process goes to step S10.
In one embodiment, in step S50, if I2 is greater than or equal to I2min, the fan speed is maintained at Vmin and the burner is maintained to operate within a preset time period t 1; and when the preset time period t1 is exceeded, the method further comprises the following steps:
s60: gradually increasing the rotating speed of the fan; when the rotating speed of the fan reaches a preset value, acquiring an ion current I3 at the current rotating speed of the fan; comparing the ion current I3 with a preset minimum value I3min of the ion current at the current fan rotating speed; if I3 is not less than I3min, acquiring the current heating temperature T and comparing the current heating temperature T with the minimum temperature Tmin required by normal PI regulation, if T is not less than Tmin, performing normal PI regulation according to the current set heating temperature, and if T is less than Tmin, returning to the step of gradually increasing the rotating speed of the fan; and if I3 is less than I3min, maintaining the rotating speed of the fan at Vmin, and maintaining the combustor to work.
In one embodiment, in step S60, if I3 < I3min, the fan speed is maintained at Vmin and the burner is maintained to operate for a preset time period t 2; and when the preset time period t2 is exceeded, the method further comprises the following steps:
s70: obtaining an ion current I4 under the current fan rotating speed Vmin; if I4 is not less than I2min, returning to step S60; if I4 < I2min, the burner is shut down.
In one embodiment, in step S70, if I4 < I2min, the burner is turned off, and after a preset time period t4, the burner is started again, and the process goes to step S10.
In one embodiment, in step S60, the fan is increased by Δ V every Δ t.
In one embodiment, the ion current is obtained through an ion current feedback pin.
In one embodiment, the fan speed is obtained by an encoder mounted on the fan.
Meanwhile, the invention also provides a full-premixing condensation wall-mounted boiler.
A full-premix condensing wall-hanging furnace is controlled by adopting the control method of the full-premix condensing wall-hanging furnace of any one of the embodiments.
The full-premixing condensation wall-mounted furnace firstly obtains the ion current at the current fan rotating speed and compares the ion current with the preset minimum value at the current fan rotating speed. If the current ionic current is smaller than the preset minimum ionic current value at the current fan rotating speed, adjusting the fan rotating speed to the preset minimum value, then judging whether the ionic current at the lowest fan rotating speed is within a preset reasonable range again, if the ionic current at the lowest fan rotating speed is smaller than the preset minimum ionic current value at the lowest fan rotating speed, judging the ionic current to be in an abnormal state, performing shutdown processing on the combustor, otherwise, judging the ionic current to be in a normal state at a gas consumption peak period, maintaining the fan rotating speed at the preset minimum value, and maintaining the combustor to work so as to ensure basic heating of a user. Through the design, the running state of the equipment is judged for many times according to the rotating speed of the fan and the ionic current, the fan is adjusted to the lowest preset rotating speed in the peak period of gas utilization, and if the flame state meets the lowest requirement, the combustor is enabled to maintain work, so that the basic heating of a user is met.
Drawings
Fig. 1 is a flow chart of a control method of a fully premixed condensing wall-hanging stove according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Fig. 1 shows a control method of a fully premixed condensing wall hanging stove according to an embodiment of the present invention.
The control method of the full-premixing condensation wall-hanging furnace comprises the following steps:
s10: and acquiring the current fan rotating speed V1. In this embodiment, the fan speed is obtained by an encoder mounted on the fan.
S20: and acquiring the ion current I1 at the rotating speed V1 of the fan. In this embodiment, the ion current is acquired through an ion current feedback pin.
S30: and comparing the ion current I1 with a preset minimum ion current value I1min under the rotating speed V1 of the fan. If I1 is less than I1min, adjusting the fan to be a preset fan rotating speed minimum value Vmin; if I1 is not less than I1min, normal PI regulation is carried out according to the currently set heating temperature, and the step S40 is stopped.
It should be noted that, at different fan speeds, the reasonable range of the ion current is different, and accordingly, the minimum value of the ion current in the reasonable range is also different. Therefore, the preset minimum value Imin of the ionic current at the current fan rotating speed can be determined only by acquiring the current fan rotating speed, and the corresponding Imin can be acquired by recording a data comparison table in advance and looking up the table after the current fan rotating speed is acquired.
S40: and acquiring the ion current I2 at the fan rotating speed Vmin.
S50: comparing the ionic current I2 with a preset ionic current minimum value I2min under the rotating speed Vmin of the fan; if I2 is less than I2min, the burner is shut down; and if I2 is not less than I2min, maintaining the rotating speed of the fan at Vmin, and maintaining the combustor to work.
If the fan is adjusted to the lowest speed state, the ion current I2 is smaller than the preset ion current minimum value I2min under the lowest speed Vmin of the fan, the current air supply quantity is reflected to be incapable of meeting the minimum quantity of the operation of the combustor, and the combustor can be judged to be abnormal at the moment and closed. If the fan is adjusted to the lowest speed state, the ion current I2 is not less than the preset ion current minimum value I2min under the lowest speed Vmin of the fan, the current air supply quantity can meet the minimum quantity of the operation of the burner, and the gas consumption peak time can be determined at the moment, so that the burner can maintain working in the state of the lowest rotating speed of the fan, and basic heating is provided for users.
In some embodiments, in step S50, if I2 < I2min, the burner is turned off, and after a preset time period t3, the burner is started again, and it jumps to step S10. Because there is a possibility that the supplied air amount may rise after the burner is turned off due to the problem of fluctuation of the supplied air amount during the peak demand period, the burner may be set to be turned on again after t3, and the process may jump to step S10 to realize dynamic control, thereby preventing a long-term loss of the heating function due to fluctuation of the supplied air amount.
Similarly, based on the problem of fluctuation of the air supply amount in the peak time period of air utilization, after the burner is shut down, the possibility of rising of the air supply amount exists, dynamic control is realized, and long-time loss of the heating function caused by fluctuation of the air supply amount is avoided. As shown in FIG. 1, in the present embodiment, in step S50, if I2 is greater than or equal to I2min, the fan speed is maintained at Vmin and the burner is maintained to operate within a preset time period t 1; and when the preset time period t1 is exceeded, the method further comprises the following steps:
s60: gradually increasing the rotating speed of the fan; and when the fan rotating speed reaches a preset value, acquiring the ion current I3 at the current fan rotating speed. And comparing the ion current I3 with a preset minimum value I3min of the ion current at the current fan rotating speed. If I3 is more than or equal to I3min, acquiring the current heating temperature T (such as the current outlet water temperature) and comparing the current heating temperature T with the minimum temperature Tmin required by normal PI regulation, if T is more than or equal to Tmin, performing normal PI regulation according to the current set heating temperature, and if T is less than Tmin, returning to the step of gradually increasing the rotating speed of the fan; and if I3 is less than I3min, maintaining the rotating speed of the fan at Vmin, and maintaining the combustor to work.
For the fan speed-up setting, the fan may be increased by Δ V every Δ t, for example, the fan may be increased by 500 revolutions every 5 minutes. For example, when the fan speed reaches 2500 revolutions, the ion current I3 at the current fan speed is obtained. And then, searching the minimum value I3min of the ion current in a reasonable range corresponding to the rotating speed of the fan being 2500 revolutions, and comparing I3 with I3 min. After the step of gradually increasing the rotating speed of the fan is returned, the fan is further increased to the next preset rotating speed of the fan. For example, the ion current I3 is obtained when the fan is increased to 2500 rpm for the last time, then the fan will continue to increase in speed when the current step returns to the step of gradually increasing the fan speed, and when the fan speed reaches 3000 rpm, the ion current I5 is obtained and compared with the preset minimum ion current I4min when the fan is at 3000 rpm.
Further, in the present embodiment, in step S60, if I3 < I3min, the fan speed is maintained at Vmin and the burner is maintained to operate within a preset time period t 2; and when the preset time period t2 is exceeded, the method further comprises the following steps:
s70: obtaining an ion current I4 under the current fan rotating speed Vmin; if I4 is not less than I2min, returning to step S60; if I4 < I2min, the burner is shut down.
In step S70, if I4 ≧ I2min, the process returns to step S60.
In other embodiments, in step S70, if I4 < I2min, the burner is turned off, and after a preset time period t4, the burner is started again, and the process jumps to step S10. Because there is a possibility that the supplied air amount may rise after the burner is turned off due to the problem of fluctuation of the supplied air amount during the peak demand period, the burner may be set to be turned on again after t4, and the process may jump to step S10 to realize dynamic control, thereby preventing a long-term loss of the heating function due to fluctuation of the supplied air amount.
According to the control method of the full-premixing condensation wall-mounted furnace, the ion current at the current fan rotating speed is obtained firstly, and is compared with the preset minimum value at the current fan rotating speed. If the current ionic current is smaller than the preset minimum ionic current value at the current fan rotating speed, adjusting the fan rotating speed to the preset minimum value, then judging whether the ionic current at the lowest fan rotating speed is within a preset reasonable range again, if the ionic current at the lowest fan rotating speed is smaller than the preset minimum ionic current value at the lowest fan rotating speed, judging the ionic current to be in an abnormal state, performing shutdown processing on the combustor, otherwise, judging the ionic current to be in a normal state at a gas consumption peak period, maintaining the fan rotating speed at the preset minimum value, and maintaining the combustor to work so as to ensure basic heating of a user. Through the design, the running state of the equipment is judged for many times according to the rotating speed of the fan and the ionic current, the fan is adjusted to the lowest preset rotating speed in the peak period of gas utilization, and if the flame state meets the lowest requirement, the combustor is enabled to maintain work, so that the basic heating of a user is met.
Meanwhile, the invention also provides a full-premixing condensation wall-mounted boiler.
The full-premixing condensation wall-hanging furnace is controlled by adopting the control method of the full-premixing condensation wall-hanging furnace of the embodiment.
For example, the fully premixed condensing wall-hanging stove may include: the control circuit module (also can be called as a mainboard) and a combustor, a fan, a gas proportional valve, an ignition needle, an ionic current feedback needle and a premixer which are respectively and electrically connected with the control circuit module. The combustor adjusts the power size through fan infinitely variable, the fan adjusts the valve body opening degree of gas proportional valve through the pressure transmission of premixer and gas proportional valve under different rotational speeds, the big combustor power of fan is just big, the little combustor power of fan is just little, under normal air-fuel ratio and normal combustion condition, the electric current size of ion feedback needle also along with combustor power grow and grow, along with combustor power diminish and diminish, and under the big and gas flow of fan rotational speed is not enough the condition, air-fuel ratio maladjustment leads to burning unusually, at this moment ionic current will deviate ionic current value normal range under the fan rotational speed, be less than the ionic current minimum under the current fan rotational speed.
If the fan rotating speed is large, the ionic current is small, the combustion is abnormal, the gas flow is insufficient, the control circuit module forces the rotating speed of the fan to be minimum, if the ionic current is recovered to a normal range under the minimum rotating speed of the fan rotating speed, the combustor is enabled to continuously combust for a period of time, and if the ionic current is still abnormal, the combustor is shut down.
When the rotating speed of the fan is minimum and the ionic current is in an ideal range, the combustor continuously burns for a period of time, the control circuit module controls the fan to gradually increase the rotating speed, when the preset rotating speed is reached, the ionic current is compared with the ionic current minimum value in the ideal range under the current rotating speed of the fan, and if the ionic current minimum value is in the ideal range, the combustion is continuously increased, so that the normal function requirements of a user are met.
The full-premixing condensation wall-mounted furnace firstly obtains the ion current at the current fan rotating speed and compares the ion current with the preset minimum value at the current fan rotating speed. If the current ionic current is smaller than the preset minimum ionic current value at the current fan rotating speed, adjusting the fan rotating speed to the preset minimum value, then judging whether the ionic current at the lowest fan rotating speed is within a preset reasonable range again, if the ionic current at the lowest fan rotating speed is smaller than the preset minimum ionic current value at the lowest fan rotating speed, judging the ionic current to be in an abnormal state, performing shutdown processing on the combustor, otherwise, judging the ionic current to be in a normal state at a gas consumption peak period, maintaining the fan rotating speed at the preset minimum value, and maintaining the combustor to work so as to ensure basic heating of a user. Through the design, the running state of the equipment is judged for many times according to the rotating speed of the fan and the ionic current, the fan is adjusted to the lowest preset rotating speed in the peak period of gas utilization, and if the flame state meets the lowest requirement, the combustor is enabled to maintain work, so that the basic heating of a user is met.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only express preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A control method of a full-premix condensing wall-mounted boiler is characterized by comprising the following steps:
s10: acquiring a current fan rotating speed V1;
s20: acquiring an ion current I1 at a fan rotating speed V1;
s30: comparing the ionic current I1 with a preset ionic current minimum value I1min under the rotating speed V1 of the fan; if I1 is less than I1min, adjusting the fan to be a preset fan rotating speed minimum value Vmin;
s40: acquiring an ion current I2 under the rotating speed Vmin of the fan;
s50: comparing the ionic current I2 with a preset ionic current minimum value I2min under the rotating speed Vmin of the fan; if I2 is less than I2min, the burner is shut down; and if I2 is not less than I2min, maintaining the rotating speed of the fan at Vmin, and maintaining the combustor to work.
2. The method as claimed in claim 1, wherein in step S30, if I1 ≧ I1min, normal PI adjustment is performed according to the currently set heating temperature, and execution of step S40 is stopped.
3. The method as claimed in claim 1, wherein in the step S50, if I2 < I2min, the burner is turned off, and after a preset time period t3, the burner is turned on again, and the step S10 is skipped.
4. The control method of the full-premix condensing wall hanging furnace as claimed in claim 1, wherein in step S50, if I2 is greater than or equal to I2min, the fan speed is maintained at Vmin and the burner is maintained to work within a preset time period t 1; and when the preset time period t1 is exceeded, the method further comprises the following steps:
s60: gradually increasing the rotating speed of the fan; when the rotating speed of the fan reaches a preset value, acquiring an ion current I3 at the current rotating speed of the fan; comparing the ion current I3 with a preset minimum value I3min of the ion current at the current fan rotating speed; if I3 is not less than I3min, acquiring the current heating temperature T and comparing the current heating temperature T with the minimum temperature Tmin required by normal PI regulation, if T is not less than Tmin, performing normal PI regulation according to the current set heating temperature, and if T is less than Tmin, returning to the step of gradually increasing the rotating speed of the fan; and if I3 is less than I3min, maintaining the rotating speed of the fan at Vmin, and maintaining the combustor to work.
5. The method for controlling the fully premixed condensation wall hanging stove according to claim 4, wherein in step S60, if I3 < I3min, the fan speed is maintained at Vmin and the burner is maintained to work within a preset time period t 2; and when the preset time period t2 is exceeded, the method further comprises the following steps:
s70: obtaining an ion current I4 under the current fan rotating speed Vmin; if I4 is not less than I2min, returning to step S60; if I4 < I2min, the burner is shut down.
6. The method as claimed in claim 5, wherein in the step S70, if I4 < I2min, the burner is turned off, and after a preset time period t4, the burner is turned on again, and the step S10 is skipped.
7. The method for controlling a fully premixed condensing wall hanging stove according to claim 4, wherein the fan is increased by Δ V every Δ t in step S60.
8. The method for controlling the full-premix condensing wall hanging furnace according to any one of claims 1 to 7, wherein the ion current is obtained by an ion current feedback needle.
9. The control method of the full-premix condensing wall hanging stove according to any one of claims 1 to 7, wherein the rotation speed of the fan is obtained by an encoder mounted on the fan.
10. A fully premixed condensing wall hanging stove characterized by being controlled by the control method of the fully premixed condensing wall hanging stove of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010847459.0A CN111912123B (en) | 2020-08-21 | 2020-08-21 | Full-premixing condensation wall-mounted furnace and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010847459.0A CN111912123B (en) | 2020-08-21 | 2020-08-21 | Full-premixing condensation wall-mounted furnace and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111912123A true CN111912123A (en) | 2020-11-10 |
| CN111912123B CN111912123B (en) | 2021-07-20 |
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| CN112833557A (en) * | 2020-09-28 | 2021-05-25 | 青岛经济技术开发区海尔热水器有限公司 | Gas water heater and flame detection method thereof |
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| CN111912123B (en) | 2021-07-20 |
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