CN109631078A - A kind of gas heater and its blower self-correction control method and control system - Google Patents
A kind of gas heater and its blower self-correction control method and control system Download PDFInfo
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- CN109631078A CN109631078A CN201811394248.5A CN201811394248A CN109631078A CN 109631078 A CN109631078 A CN 109631078A CN 201811394248 A CN201811394248 A CN 201811394248A CN 109631078 A CN109631078 A CN 109631078A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
- F23N1/025—Regulating fuel supply conjointly with air supply using electrical or electromechanical means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2239/00—Fuels
- F23N2239/04—Gaseous fuels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2241/00—Applications
- F23N2241/04—Heating water
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The present invention relates to the technical fields of gas heater intelligent control, more specifically, it is related to a kind of gas heater and its blower self-correction control method and control system, respectively under minimum rated heat input, rated heat load operating mode and under maximum rated thermic load operating mode, monitor the real-time revolving speed of blower, and real-time revolving speed and reference rotation speed are compared and analyzed, it acquires the difference of real-time revolving speed and reference rotation speed and rotation speed of fan is adapted to by reference rotation speed range based on difference, and the corresponding electric current gear value of revised revolving speed is charged into master controller, two o'clock electric current gear value based on acquisition acquires revised revolving speed-current curve, and the electric current gear value of full load section is allocated, guarantee the rotation speed of fan and the higher consistency of a reference value holding that the air-blower control electric current of optimization is controlled, to eliminate bring air quantity due to blower batch wise differences It influences, improves gas heater to the adaptability of component, be effectively ensured for stable provide of performance of gas heater.
Description
Technical field
The present invention relates to the technical field of gas heater intelligent control, more particularly, to a kind of gas heater and
Its blower self-correction control method and control system.
Background technique
Currently, often matching corresponding combustion gas and sky according to full combustion is guaranteed under the rated designs load of gas heater
Gas demand is stored with gas ratio valve and blower in primary controller procedure and matches corresponding electric current gear value one by one to realize pair
The smart control of gas quantity and air capacity is matched.However during reality is at production, because blower manufacture batch it is different caused by otherness,
When inputting same operating current to blower under the same testing conditions, blower output revolving speed can generate relatively large deviation, in turn
It causes delivery air amount to generate biggish deviation, eventually affects water heater burning and emission performance, be unable to satisfy exported product
High standards.Meanwhile product can cause water heater smoke evacuation or air feed system because of the variation of external condition in actual use
System resistance changes and phenomena such as product air feed is insufficient, external interference resistance is insufficient is caused to eventually lead to properties of product decline.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of gas heater and its blower self-correction controls
Method and control system processed eliminate bring wind due to blower batch sex differernce in fan delivery calibration correction to a reference value
Amount influences, and improves gas heater to the adaptability of component, provides and is effectively ensured for the stabilization of gas heater performance.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
A kind of blower self-correction control method of gas heater is provided, the gas heater includes for adjusting air capacity
Blower and gas ratio valve for adjusting gas quantity, the control method the following steps are included:
S10. under the shaping modes of gas heater, the gas quantity entered by gas ratio valve is adjusted, and according to gas quantity tune
The rectification campaign is electromechanical to flow gear value to adjust the input current value of blower；
S20. enter rotation speed of fan data acquisition scheme, obtain the real-time revolving speed of blower, and whether the real-time revolving speed of multilevel iudge falls
Enter within the scope of setting speed: if so, exiting shaping modes；If it is not, then being adjusted according to the difference of real-time revolving speed and reference rotation speed
Blower input current value, until obtaining the real-time revolving speed within the scope of setting speed；
S30. electric current gear value corresponding with real-time revolving speed within the scope of setting speed is fallen into is obtained, and is covered with this electric current gear value
Electric current gear value before lid in step S10；
S40. step S10 ~ S30 is repeated, until the electric current gear value in full load section is corrected.
The blower self-correction control method of gas heater of the invention correcting current gear value and covers original one by one
Electric current gear value guarantees rotation speed of fan and being consistent property of reference rotation speed that the input current of optimization rear fan is controlled, thus
The difference for eliminating blower batch sex differernce and bring rotation speed of fan signal, is effectively ensured wanting for gas heater properties
It asks.
The present invention also provides a kind of blower self-correction control method of gas heater, the gas heater includes being used for
The blower and gas ratio valve for adjusting gas quantity for adjusting air capacity, the control method the following steps are included:
S10. under the shaping modes of gas heater, the gas quantity entered by gas ratio valve is adjusted, and according to the combustion gas
Amount adjusts blower electric current gear value to adjust the input current value of blower；
S20. enter rotation speed of fan data acquisition scheme, obtain the real-time revolving speed of blower, and whether the real-time revolving speed of multilevel iudge falls
Enter within the scope of setting speed: if so, going to step S30；If it is not, then adjusting blower according to the difference of real-time revolving speed and reference rotation speed
Input current value, until obtaining the real-time revolving speed within the scope of setting speed；
S30. enter fan pressure data acquisition scheme, obtain the real-time wind pressure of blower, and whether the real-time wind pressure of multilevel iudge falls
Enter to set within the scope of wind pressure: if so, exiting shaping modes；If it is not, then repeating step S10 ~ S20 to acquisition setting wind pressure range
Interior real-time wind pressure；
S40. it obtains and falls into the corresponding electric current gear value of wind pressure, and gear value covering step according to this in real time within the scope of setting wind pressure
Original electric current gear value in rapid S10；
S50. step S10 ~ S40 is repeated, until the electric current gear value in full load section is corrected.
The blower self-correction control method of gas heater of the invention correcting current gear value and covers original one by one
Electric current gear value guarantees rotation speed of fan and being consistent property of reference rotation speed that the input current of optimization rear fan is controlled, optimization
Wind pressure that the input current of rear fan is controlled and setting being consistent property of wind pressure range, thus eliminate blower batch sex differernce and
The requirement of gas heater properties is effectively ensured in the difference of bring rotation speed of fan signal and wind pressure signal.
Preferably, under the shaping modes of gas heater, the gas quantity entered by gas ratio valve is adjusted, according to combustion gas
The electric current gear value of amount adjustment blower, until the thermic load of gas heater reaches minimum rated heat input, rated heat load；Obtain and fall into setting
Real-time revolving speed or wind pressure corresponding first electric current gear value in real time is fallen within the scope of setting wind pressure in the range of speeds, and is covered with this
Electric current gear value in step S10.The thermic load of gas heater is codetermined by gas quantity and air capacity, gas ratio valve
Current input value and blower current input value correspond.
Preferably, under the shaping modes of gas heater, the gas quantity entered by gas ratio valve is adjusted, according to combustion gas
The electric current gear value of amount adjustment blower, until the thermic load of gas heater reaches maximum rated thermic load；Obtain and fall into setting
Real-time revolving speed or wind pressure corresponding second electric current gear value in real time is fallen within the scope of setting wind pressure in the range of speeds, and is covered with this
Electric current gear value in step S10.The thermic load of gas heater is codetermined by gas quantity and fan delivery, gas proportion
The current input value of valve and the current input value of blower correspond.
Preferably, the first electric current gear value and maximum rated thermic load in step S40, when based on minimum rated heat input, rated heat load
When the second electric current gear value, the electric current gear value of full load section is redistributed.By in minimum rated load and most
Rotation speed of fan is adapted within the scope of setting speed under big two kinds of operating modes of rated load and obtain it is right under two kinds of operating modes
The first electric current gear value and the second electric current gear value are answered, the electric current gear value of full load section is allocated, what guarantee newly optimized
The rotation speed of fan that blower electric current gear value is controlled is still fallen within the scope of setting speed.
Preferably, the setting speed range table is shown as the real-time revolving speed of ∣-base standard turn speed ∣/reference rotation speed ∈ [0,3%].This
Invention is not rotation speed of fan to be corrected to reference rotation speed value, but allow a certain range of error when correcting rotation speed of fan,
While the consistency of the guarantee blower input current rotation speed of fan controlled and a reference value, reduce adjustment difficulty.
The present invention also provides a kind of blower self-correction control systems of gas heater, including master controller, blower to supply
Electric module, fan control module, current feedback module, speed feedback module and regulating device:
The master controller obtains the tach signal of the blower by speed feedback module, obtains institute by current feedback module
State the current signal of blower；The master controller is equipped with the multilevel iudge mould for the real-time revolving speed of multilevel iudge and reference rotation speed
Block；
The input terminal of the blower power supply module is connected to the output end of master controller, and the output end of blower power supply module is connected to
The input terminal of the blower；
The input terminal of the fan control module is connected to the output end of master controller, and the output end of fan control module is connected to
The input terminal of the blower；
It is electrically connected between the regulating device and master controller.
The blower self-correction control system of gas heater of the invention adjusts the gas quantity entered by gas ratio valve,
And blower electric current gear value is adjusted to adjust the input current value of blower according to gas quantity, input current value passes through current feedback mould
Block Real-time Feedback is to master controller；Into rotation speed of fan data acquisition scheme, master controller obtains wind by speed feedback module
The real-time revolving speed of machine, and real-time revolving speed and setting speed range are compared by comparing judgment module；If turning in real time
Speed is not in the range of speeds of setting, then according to the difference of real-time revolving speed and reference rotation speed, adjusts blower by regulating device
Input current value stores current gear at this time until the real-time revolving speed that master controller receives is fallen into the range of speeds of setting
Place value；Then, multiple electric current gear values in full load section are obtained in the same way and are stored；Master controller is according to the electricity of storage
Stream gear value covers original electric current gear value one by one, the rotation speed of fan and base that the air-blower control electric current after guaranteeing optimization is controlled
Quasi- value guarantees higher consistency.
Further, the regulating device includes for showing the display device of tach signal and current signal, for adjusting
The electric current gear adjusting apparatus of rectification campaign machine input current value and the combustion gas adjustment for entering gas quantity for adjusting gas ratio valve
Device.Display device can intuitively show that real-time revolving speed and real-time current signal, electric current gear adjusting apparatus are convenient to adjust
The size of gas heater input current, combustion gas adjustment device are convenient to the size of the gas quantity of adjustment gas heater.
Further, the master controller includes the memory module being connected with for storing real-time current and real-time revolving speed.
The setting of memory module can save the real-time current of present lot blower and real-time revolving speed, researcher draw according to historical data
Revolving speed-current curve processed provides data basis for the performance study of gas heater.Blower of the invention is preferably but is not limited to
Brushless DC blower.The reference rotation speed of brushless DC blower is n=60*f/p, and n is rotation speed of fan, and unit r/min, f are blower
Frequency, unit Hz, p are the number of pole-pairs of blower.The present invention also provides a kind of combustion gas including blower self-correction control system
Water heater.
Gas heater of the invention can guarantee gas heater air capacity needed for each load point, the burning of load section
It is consistent with reference design value, the difference of bring rotation speed of fan signal due to difference between blower batch can be eliminated, can effectively be protected
Demonstrate,prove the requirement of gas heater properties.
Compared with prior art, the beneficial effects of the present invention are:
Gas heater and its blower self-correction control method of the invention and control system, by the way that gas heater is adjusted mould
Rotation speed of fan under formula is adapted in setting range, and corresponding air-blower control electric current gear value is charged to master controller, to complete negative
The electric current gear value of lotus section is allocated, guarantee the rotation speed of fan that is controlled of air-blower control electric current of optimization and a reference value keep compared with
High consistency improves gas heater to the adaptability of component so that eliminating bring air quantity due to blower batch wise differences influences,
It is effectively ensured for stable provide of performance of gas heater.
Detailed description of the invention
Fig. 1 is the flow chart of the blower self-correction control method of the gas heater of embodiment one.
Fig. 2 is the flow chart of the blower self-correction control method of the gas heater of embodiment two.
Fig. 3 is the structural schematic diagram of the blower self-correction control system of the gas heater of embodiment three.
Fig. 4 is the structural schematic diagram of the blower self-correction control system of the gas heater of example IV.
Specific embodiment
The present invention is further illustrated With reference to embodiment.Wherein, attached drawing only for illustration,
What is indicated is only schematic diagram, rather than pictorial diagram, should not be understood as the limitation to this patent；Reality in order to better illustrate the present invention
Example is applied, the certain components of attached drawing have omission, zoom in or out, and do not represent the size of actual product；To those skilled in the art
For, the omitting of some known structures and their instructions in the attached drawings are understandable.
The same or similar label correspond to the same or similar components in the attached drawing of the embodiment of the present invention；It is retouched in of the invention
In stating, it is to be understood that if the orientation or positional relationship for having the instructions such as term " on ", "lower", "left", "right" is based on attached drawing
Shown in orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion is signified
Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore positional relationship is described in attached drawing
Term only for illustration, should not be understood as the limitation to this patent, for the ordinary skill in the art, can
To understand the concrete meaning of above-mentioned term as the case may be.
Embodiment one
It is as shown in Figure 1 the embodiment of the blower self-correction control method of gas heater of the invention, gas heater includes
Gas ratio valve for adjusting the blower of air capacity and for adjusting gas quantity, control method the following steps are included:
S10. under the shaping modes of gas heater, the gas quantity entered by gas ratio valve is adjusted, and according to gas quantity tune
The rectification campaign is electromechanical to flow gear value to adjust the input current value of blower；
S20. enter rotation speed of fan data acquisition scheme, obtain the real-time revolving speed of blower, and whether the real-time revolving speed of multilevel iudge falls
Enter within the scope of setting speed: if so, exiting shaping modes；If it is not, then being adjusted according to the difference of real-time revolving speed and reference rotation speed
Blower input current value, until obtaining the real-time revolving speed within the scope of setting speed；
S30. electric current gear value corresponding with real-time revolving speed within the scope of setting speed is fallen into is obtained, and is covered with this electric current gear value
Electric current gear value before lid in step S10；
S40. step S10 ~ S30 is repeated, until correction finishes the electric current gear value in full load section.
The present embodiment is not rotation speed of fan to be corrected to reference rotation speed value, but allow a certain range of when implementing
Error, the quasi- Zhuan Su ∣/reference rotation speed ∈ [0,3%] of the real-time revolving speed-Ji of Biao Shi Wei ∣；It correcting current gear value and covers original one by one
Electric current gear value, guarantee the rotation speed of fan that is controlled of input current and being consistent property of reference rotation speed of optimization rear fan, from
And the difference of blower batch sex differernce and bring rotation speed of fan signal is eliminated, wanting for gas heater properties is effectively ensured
It asks.
The present embodiment is to simplify blower self-correction control method, and recoverable is in maximum rated load, minimum rated load two
Rotation speed of fan is corrected under the operating mode at end, then the electric current gear value in full load section is allocated.Specifically: step S10
In, under the shaping modes of gas heater, the gas quantity entered by gas ratio valve is adjusted, and blower is adjusted according to gas quantity
Electric current gear value, until the thermic load of gas heater reaches minimum rated heat input, rated heat load；In step S30, setting is obtained and fallen into
The corresponding first electric current gear value of real-time revolving speed in the range of speeds, and with the electric current gear value in this covering step S10.Step
In S10, under the shaping modes of gas heater, the gas quantity entered by gas ratio valve is adjusted, and adjust according to gas quantity
The electric current gear value of blower, until the thermic load of gas heater reaches maximum rated thermic load；In step S30, obtains and fall into
The corresponding second electric current gear value of real-time revolving speed within the scope of setting speed, and with the electric current gear value in this covering step S10.Step
The second electric current gear in rapid S40, when the first electric current gear value and maximum rated thermic load when based on minimum rated heat input, rated heat load
Value, redistributes the electric current gear value of full load section.By in two kinds of works of minimum rated load and maximum rated load
Rotation speed of fan is adapted within the scope of setting speed under operation mode and obtains corresponding first electric current gear value under two kinds of operating modes
With the second electric current gear value, the electric current gear value of full load section is allocated, guarantees the blower electric current gear value institute newly optimized
The rotation speed of fan of control is still fallen in revolving speed reference range.
Embodiment two
It is illustrated in figure 2 the embodiment of the blower self-correction control method of gas heater of the invention, gas heater includes
Gas ratio valve for adjusting the blower of air capacity and for adjusting gas quantity, control method the following steps are included:
S10. under the shaping modes of gas heater, the gas quantity entered by gas ratio valve is adjusted, and according to the combustion gas
Amount adjusts blower electric current gear value to adjust the input current value of blower；
S20. enter rotation speed of fan data acquisition scheme, obtain the real-time revolving speed of blower, and whether the real-time revolving speed of multilevel iudge falls
Enter within the scope of setting speed: if so, going to step S30；If it is not, then adjusting blower according to the difference of real-time revolving speed and reference rotation speed
Input current value, until obtaining the real-time revolving speed within the scope of setting speed；
S30. enter fan pressure data acquisition scheme, obtain the real-time wind pressure of blower, and whether the real-time wind pressure of multilevel iudge falls
Enter to set within the scope of wind pressure: if so, exiting shaping modes；If it is not, then repeating step S10 ~ S20 to acquisition setting wind pressure range
Interior real-time wind pressure；
S40. it obtains and falls into the corresponding electric current gear value of wind pressure, and gear value covering step according to this in real time within the scope of setting wind pressure
Original electric current gear value in rapid S10；In the present embodiment, set wind pressure range as the wind pressure value changed in 3s ~ 10s be more than 3Pa ~
15Pa；
S50. step S10 ~ S40 is repeated, until the electric current gear value in full load section is corrected.
The present embodiment is to simplify blower self-correction control method, and recoverable is in maximum rated load, minimum rated load two
Rotation speed of fan and wind pressure are corrected under the operating mode at end, then the electric current gear value in full load section is allocated.Specifically: step
In rapid S10, under the shaping modes of gas heater, the gas quantity entered by gas ratio valve is adjusted, and according to gas quantity tune
The electric current gear value of rectification campaign machine, until the thermic load of gas heater reaches minimum rated heat input, rated heat load；In step S40, obtains and fall
Enter to set the corresponding first electric current gear value of real-time wind pressure within the scope of wind pressure, and with the electric current gear value in this covering step S10.
In step S10, under the shaping modes of gas heater, the gas quantity entered by gas ratio valve is adjusted, and according to gas quantity
The electric current gear value for adjusting blower, until the thermic load of gas heater reaches maximum rated thermic load；In step S40, obtain with
The corresponding second electric current gear value of real-time wind pressure within the scope of setting wind pressure is fallen into, and with the electric current gear in this covering step S10
Value.The second electric current in step S50, when the first electric current gear value and maximum rated thermic load when based on minimum rated heat input, rated heat load
Gear value redistributes the electric current gear value of full load section.By in minimum rated load and maximum rated load two
Rotation speed of fan is adapted within the scope of setting speed under kind operating mode and obtains corresponding first current gear under two kinds of operating modes
Place value and the second electric current gear value, are allocated the electric current gear value of full load section, guarantee the blower electric current gear newly optimized
The revolving speed and wind pressure that value is controlled are still fallen within the scope of setting reference rotation speed range and setting wind pressure.
Embodiment three
It is illustrated in figure 3 the blower self-correction control system of gas heater of the invention, including master controller, blower power supply mould
Block, fan control module, current feedback module, speed feedback module and regulating device:
Master controller obtains the tach signal of blower by speed feedback module, and the electric current of blower is obtained by current feedback module
Signal；Master controller is equipped with the multilevel iudge module for the real-time revolving speed of multilevel iudge and reference rotation speed；
The input terminal of blower power supply module is connected to the output end of master controller, and the output end of blower power supply module is connected to blower
Input terminal；
The input terminal of fan control module is connected to the output end of master controller, and the output end of fan control module is connected to blower
Input terminal；
It is electrically connected between regulating device and master controller.
The present embodiment adjusts the gas quantity entered by gas ratio valve, and root after gas heater enters shaping modes
Blower electric current gear value is adjusted according to gas quantity to adjust the input current value of blower, and input current value passes through current feedback module reality
When feed back to master controller；Into rotation speed of fan data acquisition scheme, master controller obtains blower by speed feedback module
Real-time revolving speed, and real-time revolving speed and setting speed range are compared by comparing judgment module；If real-time revolving speed is not
In the range of speeds of setting, then according to the difference of real-time revolving speed and reference rotation speed, the input of blower is adjusted by regulating device
Current value stores electric current gear value at this time until the real-time revolving speed that master controller receives is fallen into the range of speeds of setting；
Then, multiple electric current gear values in full load section are obtained in the same way and are stored；Master controller is according to the current gear of storage
Place value covers original electric current gear value one by one, the rotation speed of fan and a reference value that the air-blower control electric current after guaranteeing optimization is controlled
Guarantee higher consistency.Wherein, regulating device includes for showing the display device of tach signal and current signal, for adjusting
The electric current gear adjusting apparatus of rectification campaign machine input current value and the combustion gas adjustment for entering gas quantity for adjusting gas ratio valve
Device；Display device intuitively shows that real-time revolving speed and real-time current signal, electric current gear adjusting apparatus easily adjust combustion gas
The size of water heater input current, combustion gas adjustment device are convenient to the size of the gas quantity of adjustment gas heater.
In the present embodiment, electric current gear value uses 16 system algorithms, alphabetical A, B, C, D, E, F respectively represent 10,11,12,
13,14,15 number, as gear value be 6C code when, represented by specific input current value be 6x16+12=108.
Master controller includes the memory module being connected with for storing real-time current and real-time revolving speed, saves present lot wind
The real-time current of machine and real-time revolving speed, researcher can transfer historical data and draw revolving speed-current curve, be gas heater
Performance study provides data basis.
Blower in the present embodiment is brushless DC blower, and reference rotation speed is n=60*f/p, and n is rotation speed of fan, and unit is
R/min, f are blower frequency, and unit Hz, p are the number of pole-pairs of blower.Wherein, the relationship between blower frequency and input current value
Brushless DC blower for known models be it is known, the relationship between reference rotation speed and input current value can be derived；
So that reference rotation speed easily is calculated very much according to the input current value of blower in timing.
Example IV
It is illustrated in figure 4 the embodiment of the blower self-correction control system of gas heater of the invention, the present embodiment and implementation
Example three is similar, institute the difference is that, blower self-correction control system further include wind pressure feedback module, temperature sensing module and
Flow sensing module, master controller are obtained the wind pressure signal of blower by wind pressure feedback module, are obtained by temperature sensing module
Leaving water temperature, inflow temperature obtain real-time water flow by flow sensing module.The sample tap of wind pressure feedback module and blower
The connection of wind pressure sampling mouth, wind pressure feedback module, which perceives the wind pressure at blower sample tap, to be changed and is changed into wind pressure signal accordingly
Electric frequency signal is transferred to master controller: when wind pressure signal changes in 3s ~ 10s more than 3Pa ~ 15Pa, while master controller
The defeated of blower is adjusted according to the setting temperature of acquisition, leaving water temperature, inflow temperature, real-time water flow and gas ratio valve current value
Enter current value carry out wind pressure real-time compensation adjust so as to water heater under optimum condition steady operation, be suitable for consumer use when
Blower self compensation, promoted the comfortable Experience Degree of consumer.
Embodiment five
The present embodiment be include embodiment that the blower of gas heater reviews one's lessons by oneself the gas heater of positive system, in each load
Point, load section burning needed for air capacity it is consistent with reference design value, can eliminate because between blower batch difference due to bring wind
The requirement of gas heater properties is effectively ensured in the difference of machine tach signal.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (10)
1. a kind of blower self-correction control method of gas heater, the gas heater include the wind for adjusting air capacity
Machine and gas ratio valve for adjusting gas quantity, which is characterized in that the control method the following steps are included:
S10. under the shaping modes of gas heater, the gas quantity entered by gas ratio valve is adjusted, and according to the combustion gas
Amount adjusts blower electric current gear value to adjust the input current value of blower；
S20. enter rotation speed of fan data acquisition scheme, obtain the real-time revolving speed of blower, and whether the real-time revolving speed of multilevel iudge falls
Enter within the scope of setting speed: if so, exiting shaping modes；If it is not, then being adjusted according to the difference of real-time revolving speed and reference rotation speed
Blower input current value, until obtaining the real-time revolving speed within the scope of setting speed；
S30. electric current gear value corresponding with real-time revolving speed within the scope of setting speed is fallen into is obtained, and is covered with this electric current gear value
Electric current gear value before lid in step S10；
S40. step S10 ~ S30 is repeated, until the electric current gear value in full load section is corrected.
2. a kind of blower self-correction control method of gas heater, the gas heater include the wind for adjusting air capacity
Machine and gas ratio valve for adjusting gas quantity, which is characterized in that the control method the following steps are included:
S10. under the shaping modes of gas heater, the gas quantity entered by gas ratio valve is adjusted, and according to the combustion gas
Amount adjusts blower electric current gear value to adjust the input current value of blower；
S20. enter rotation speed of fan data acquisition scheme, obtain the real-time revolving speed of blower, and whether the real-time revolving speed of multilevel iudge falls
Enter within the scope of setting speed: if so, going to step S30；If it is not, then adjusting blower according to the difference of real-time revolving speed and reference rotation speed
Input current value, until obtaining the real-time revolving speed within the scope of setting speed；
S30. enter fan pressure data acquisition scheme, obtain the real-time wind pressure of blower, and whether the real-time wind pressure of multilevel iudge falls
Enter to set within the scope of wind pressure: if so, exiting shaping modes；If it is not, then repeating step S10 ~ S20 to acquisition setting wind pressure range
Interior real-time wind pressure；
S40. it obtains and falls into the corresponding electric current gear value of wind pressure, and gear value covering step according to this in real time within the scope of setting wind pressure
Original electric current gear value in rapid S10；
S50. step S10 ~ S40 is repeated, until the electric current gear value in full load section is corrected.
3. the blower self-correction control method of gas heater according to claim 1 or 2, which is characterized in that in combustion gas
Under the shaping modes of water heater, the gas quantity entered by gas ratio valve is adjusted, and adjusts the current gear of blower according to gas quantity
Place value, until the thermic load of gas heater reaches maximum rated thermic load；Obtain and fall into real-time revolving speed within the scope of setting speed
Or the corresponding first electric current gear value of real-time wind pressure within the scope of setting wind pressure is fallen into, and with the original electric current gear of this covering step
Value.
4. the blower self-correction control method of gas heater according to claim 3, which is characterized in that in gas and hot water
Under the shaping modes of device, the gas quantity entered by gas ratio valve is adjusted, and adjusts the electric current gear value of blower according to gas quantity,
Thermic load to gas heater reaches minimum rated heat input, rated heat load；It obtains and falls into real-time revolving speed within the scope of setting speed or fall into
The corresponding second electric current gear value of real-time wind pressure within the scope of wind pressure is set, and original electric current gear value is covered with this.
5. the blower self-correction control method of gas heater according to claim 4, which is characterized in that be based on maximum
The second electric current gear value when the first electric current gear value when determining thermic load and minimum rated heat input, rated heat load, to the electric current of full load section
Gear value is redistributed.
6. the blower self-correction control method of gas heater according to claim 1 or 2, which is characterized in that described to set
Determine the quasi- Zhuan Su ∣/reference rotation speed ∈ [0,3%] of the real-time revolving speed-Ji of range of speeds Biao Shi Wei ∣.
7. a kind of blower self-correction control system of gas heater, which is characterized in that including master controller, blower power supply mould
Block, fan control module, current feedback module, speed feedback module and regulating device:
The master controller obtains the tach signal of the blower by speed feedback module, obtains institute by current feedback module
State the current signal of blower；The master controller is equipped with the multilevel iudge mould for the real-time revolving speed of multilevel iudge and reference rotation speed
Block；
The input terminal of the blower power supply module is connected to the output end of master controller, and the output end of blower power supply module is connected to
The input terminal of the blower；
The input terminal of the fan control module is connected to the output end of master controller, and the output end of fan control module is connected to
The input terminal of the blower；
It is electrically connected between the regulating device and master controller.
8. the blower self-correction control system of gas heater according to claim 6, which is characterized in that the adjusting dress
It sets including the display device for showing tach signal and current signal, the electric current gear tune for adjusting blower input current value
Engagement positions and the combustion gas for entering gas quantity for adjusting gas ratio valve adjust device.
9. the blower self-correction control system of gas heater according to claim 6, which is characterized in that the main control
Device includes the memory module being connected with for storing real-time current and real-time revolving speed.
10. a kind of gas heater, which is characterized in that review one's lessons by oneself positive control including the described in any item blowers of such as claim 6 to 9
System.
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| CN111550928A (en) * | 2020-04-17 | 2020-08-18 | 深圳市合信达控制系统有限公司 | Control method and device for fan rotating speed, computer equipment and readable storage equipment |
| CN111578523A (en) * | 2020-04-30 | 2020-08-25 | 广东万和新电气股份有限公司 | Water heater wind pressure value adjusting method and device, computer equipment and storage medium |
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| CN113898948A (en) * | 2021-10-18 | 2022-01-07 | 东莞市艾瑞科热能设备有限公司 | Staged combustion balance control method for combustor, combustor and wall-hanging stove |
| CN113898948B (en) * | 2021-10-18 | 2023-05-30 | 东莞市艾瑞科热能设备有限公司 | Sectional combustion balance control method of burner, burner and wall-mounted furnace |
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