CN110207114A - Combustor capable of detecting air chamber pressure and control method thereof - Google Patents
Combustor capable of detecting air chamber pressure and control method thereof Download PDFInfo
- Publication number
- CN110207114A CN110207114A CN201811158929.1A CN201811158929A CN110207114A CN 110207114 A CN110207114 A CN 110207114A CN 201811158929 A CN201811158929 A CN 201811158929A CN 110207114 A CN110207114 A CN 110207114A
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- difference delta
- pressure difference
- blower
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000002485 combustion reaction Methods 0.000 claims abstract description 64
- 239000007789 gas Substances 0.000 claims description 67
- 239000000523 sample Substances 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000000567 combustion gas Substances 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
- F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N3/00—Regulating air supply or draught
Abstract
The invention discloses a combustor capable of detecting air chamber pressure and a control method thereof, and the combustor comprises a combustor shell, one or more fire row groups and a pressure detection assembly, wherein the one or more fire row groups are arranged in a combustion chamber, a primary air chamber and a secondary air chamber which are communicated with an air inlet are respectively arranged in the combustor shell, the primary air chamber is communicated with an injection port, the secondary air chamber is communicated with the combustion chamber, and the pressure detection assembly is arranged in the combustor shell and is used for detecting the pressure of the primary air chamber and the pressure of the secondary air chamber; the invention can adjust in real time according to the combustion feedback to enable the system to reach the optimal combustion working condition, the rotation speed of the fan is adjusted in a following way by adjusting the combustion in a self-adaptive way, and the requirements of the comfort and the stability of the whole machine can be met by adjusting the fan in real time even if the difference of the fan is large.
Description
Technical field
The invention belongs to gas heater technical fields, and in particular to a kind of burner for being able to detect air chamber pressure and
Its control method.
Background technique
Currently, the gas heater of the DC speed regulation type blower used in the market is substantially by presetting rotation speed of fan
Curve carries out power transformation flow control, and which needs to carry out complete machine sampling in advance and then determines that rotation speed of fan or electric current and complete machine fire
Matching relationship when burning, when the otherness of blower itself is larger, the matching relationship of the curve is larger by deviation, cannot be optimal
Meet the stability and working condition requirement of burning；Another control mode is to be carried out using default wind speed curve to each load section wind speed
Compensation, this mode is relatively complicated, and design needs to do a large amount of test to be determined and perfect, to the consistency of blower early period
It is required that relatively high.
Summary of the invention
For overcome the deficiencies in the prior art, the purpose of the present invention is intended to provide a kind of combustion for being able to detect air chamber pressure
Burner and its control method.
The technical scheme of the present invention is realized as follows:
The embodiment of the present invention provides a kind of burner for being able to detect air chamber pressure comprising burner shell, one
Or multiple fire row groups, pressure detecting assembly, the burner shell inside is combustion chamber, one or more of fire row groups settings
In the combustion chamber, the side of each fire row group is provided with ejecting port, and air inlet is provided on the burner shell, described
Be respectively arranged with the primary air room communicated with air inlet and secondary air plenum in burner casing body, the primary air room with draw
Loophole communicates, and the secondary air plenum is communicated with combustion chamber, and the pressure detecting assembly is arranged in burner casing body for examining
Survey the pressure of primary air room and secondary air plenum.
Preferably, the side of the burner shell be additionally provided with gas inlet corresponding with ejecting port and First air into
Air port, the channel between the gas inlet and First air air inlet form primary air room.
It preferably, further include auxiliary air distribution plate, the bottom of combustion chamber is arranged in the auxiliary air distribution plate, described
Multiple Secondary Air air inlets, the gap shape between the auxiliary air distribution plate and fire row group are offered on auxiliary air distribution plate
At secondary air plenum, air duct is formed between the auxiliary air distribution plate and burner shell, the air duct is used for
The air of air inlet is conducted to primary air room and secondary air plenum.
It preferably, further include at least one solenoid valve, at least one described solenoid valve is connect with one or more fire row groups,
The quantity opened for controlling the fire row group.
Preferably, the pressure detecting assembly includes that multiple first pressure probes and multiple second pressures are popped one's head in, described more
A first pressure probe and multiple second pressures probe are separately positioned in primary air room and auxiliary air room.
Preferably, what the first pressure was popped one's head in layouts quantity x depending on the quantity m of solenoid valve, specifically, x=m+
1, wherein x is the quantity of layouting of first pressure probe, and m is the quantity of solenoid valve；The quantity y that layouts of the second pressure probe
Depending on the quantity m of solenoid valve, specifically, y=m+1, wherein y is the quantity of layouting of second pressure probe, and m is solenoid valve
Quantity.
The embodiment of the present invention also provides a kind of control method of pressure follow control gas heater air quantity, is applied to combustion
Gas water heater, the gas heater include a kind of burner for being able to detect air chamber pressure as described in above scheme,
It is characterized in that, under the working condition of gas heater, according to aspiration pressure P0Respectively with current primary air chamber pressure P1, two
Secondary air chamber pressure P2Difference determine the first instantaneous pressure difference DELTA P0-1, the second instantaneous pressure difference DELTA P0-2；According to described
First instantaneous pressure difference DELTA P0-1With the second instantaneous pressure difference DELTA P0-2In any one situation of change, it is determined whether adjustment
The revolving speed of blower；If it is determined that adjustment rotation speed of fan, the air quantity Q according to needed for combustion chamber determines the revolving speed n and output electric current of blower
I。
Preferably, described under the working condition of gas heater, according to aspiration pressure P0Respectively with current primary air
Chamber pressure P1, auxiliary air chamber pressure P2Difference determine the first instantaneous pressure difference DELTA P0-1, the second instantaneous pressure difference DELTA
P0-2, further include before, according to instantaneous gas secondary pressure P3With preset theoretical gas secondary pressure P3' whether consistent, it determines
Whether gas heater is in running order.
Preferably, described if it is determined that adjustment rotation speed of fan, the air quantity Q according to needed for combustion chamber determine blower revolving speed n and
Electric current I is exported, further includes later, respectively by the first instantaneous pressure difference DELTA P adjusted0-1" and preset first theoretical pressure
Difference DELTA P0-1' difference, the second instantaneous pressure difference DELTA P adjusted0-2" and default second theoretical pressure difference DELTA P0-2'
Difference is compared with error threshold ξ, as the first instantaneous pressure difference DELTA P adjusted0-1" and preset first theory
Pressure difference value Δ P0-1' difference be greater than error threshold ξ or the second instantaneous pressure difference DELTA P adjusted0-2" and it is pre-
If the second theoretical pressure difference DELTA P0-2' difference be greater than error threshold ξ when, determine readjust blower revolving speed.
Preferably, described according to the first instantaneous pressure difference DELTA P0-1With the second instantaneous pressure difference DELTA P0-2In it is any
One situation of change, it is determined whether the revolving speed of blower is adjusted, specifically, according to the first instantaneous pressure difference DELTA P0-1With
Preset first theoretical pressure difference DELTA P0-1' whether consistent or the second instantaneous pressure difference DELTA P0-2With preset second reason
By pressure difference value Δ P0-2' whether consistent, it is determined whether adjust the revolving speed of blower；If the first instantaneous pressure difference DELTA P0-1With
Preset first theoretical pressure difference DELTA P0-1' inconsistent or described second instantaneous pressure difference DELTA P0-2With preset second
Theoretical pressure difference DELTA P0-2' inconsistent, determine adjustment rotation speed of fan.
Preferably, however, it is determined that adjustment rotation speed of fan, the air quantity Q according to needed for combustion chamber determine revolving speed n and the output of blower
Electric current I, specifically, firepower gear is determined according to the valve opening signal of solenoid valve, it is true according to firepower gear, proportioning valve electric current and load
Determine air consumption；According to combustion reaction formula, coefficient of excess air and air consumption, air quantity Q needed for determining combustion chamber；According to institute
Air quantity Q needed for stating combustion chamber determines the revolving speed n of blower；According to the relation curve of rotation speed of fan and output electric current, blower is determined
Output electric current I.
Preferably, further include, according to current primary air chamber pressure P1With theoretical primary air chamber pressure P1' whether consistent,
Determine whether the load of gas heater changes；If it is determined that the load of gas heater changes, according to combustion chamber institute
The air quantity Q needed determines the revolving speed n and output electric current I of blower.
Compared with prior art, multiple groups steam channel, multiple evaporators, multiple evaporations are arranged in evaporator assemblies of the invention
Device is used cooperatively, and capable of making steam box liner, temperature rapid increase, improves preheating speed, meanwhile, using solenoid valve control multiple groups
The switching of steam channel, and change the unlatching quantity of steam channel and the unlatching number of evaporator according to different duration and degree of heating grades
Amount, can be realized it is small, in, the switching of the big duration and degree of heating, to improve culinary art effect.
The present invention in burner by being arranged pressure detecting assembly, to the primary air room of burner and secondary air plenum
Wind pressure detected, and by the pressure change of primary air room and secondary air plenum, can determine gas heater
Combustion conditions and load condition, to determine theory gas heater institute according to the variation of the variation of combustion conditions and load
Required airflow, so that the revolving speed of blower be adaptively adjusted by the output electric current for changing blower；The present invention is according to theoretical institute
The blower of gas heater is directly adjusted in required airflow, can eliminate the influence of blower otherness, to improve blower
Adaptability, and according in the variation of load, corresponding air quantity is calculated and to the revolving speed of blower according to the variation of pressure in real time
It is adjusted, fast response time, and so that system is reached optimal combustion conditions to adjust in real time according to combustion feedback, by certainly
Adapt to adjust burning to carry out following adjusting to rotation speed of fan, even if blower otherness is larger can also to be adjusted in real time to meet complete machine
Comfort, durability requirements.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram for the burner for being able to detect air chamber pressure of the embodiment of the present invention 1；
Fig. 2 is a kind of top view for the burner for being able to detect air chamber pressure of the embodiment of the present invention 1；
Fig. 3 is the flow chart for the control method that a kind of pressure follow of the embodiment of the present invention 2 controls gas heater air quantity.
Appended drawing reference is as follows:
1 --- --- --- air inlet, 13 --- gas inlet, 14 --- are primary for combustion chamber, 12 for burner shell, 11
--- --- --- primary air room, 4 --- secondary air plenum, 5 --- the secondary sky of ejecting port, 3 of fire row group, 21 of wind air inlet, 2
--- --- second pressure is visited for air duct, 7 --- first pressure probe, 8 --- for Secondary Air air inlet, 6 for gas distribution plate, 51
Head.
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 burner for being able to detect air chamber pressure, as shown in Figure 1 comprising burning
Device shell 1, one or more fire row group 2, pressure detecting assembly are combustion chamber 11 inside the burner shell 1, one
Or multiple fire row groups 2 are arranged in combustion chamber 11, the side of each fire row group 2 is provided with ejecting port 21, the burner
Air inlet 12 is provided on shell, be respectively arranged in the burner shell 1 the primary air room 3 communicated with air inlet 12 and
Secondary air plenum 4, the primary air room 3 are communicated with ejecting port 21, and the secondary air plenum 4 is communicated with combustion chamber 11, described
Pressure detecting assembly is arranged in burner shell 1 for detecting the pressure of primary air room 3 and secondary air plenum 4.
Wherein, the side of burner shell 1 be additionally provided with gas inlet 13 corresponding with ejecting port 21 and First air into
Air port 14, the channel between the gas inlet 13 and First air air inlet 14 form primary air room 3.
It wherein, further include auxiliary air distribution plate 5, the bottom of combustion chamber 11, institute is arranged in the auxiliary air distribution plate 5
It states and is uniformly provided with multiple Secondary Air air inlets 51 on auxiliary air distribution plate 5.
Gap between auxiliary air distribution plate 5 and fire row group 2 forms secondary air plenum 4, the auxiliary air distribution plate 5
Air duct 6 is formed between burner shell 1, the air duct 6 is for the air at air inlet 12 to be conducted to once
Air chamber 3 and secondary air plenum 4.
It wherein, further include at least one solenoid valve, at least one described solenoid valve is connect with one or more fire row groups 2,
The quantity opened for controlling the fire row group 2.
With reference to Fig. 2, pressure detecting assembly includes multiple first pressures probe 7 and multiple second pressures probe 8, the multiple
First pressure probe 7 and multiple second pressures probe 8 are separately positioned in primary air room 3 and secondary air plenum 4.
Wherein, multiple first pressure probes 7 are uniformly set in primary air room 3, specific first pressure probe 7
The position that air enters First air air inlet 14 along air duct 6 is set.
Multiple second pressure probes 8 are uniformly set in secondary air plenum 4, specific 8 setting of second pressure probe
Deviate from the side of First air air inlet 14 in secondary air plenum 4.
First pressure probe 7 layouts quantity x depending on the quantity m of solenoid valve, specifically, x=m+1, wherein x is
The quantity of layouting of first pressure probe 7, m are the quantity of solenoid valve.
Second pressure probe 8 layouts quantity y depending on the quantity m of solenoid valve, specifically, y=m+1, wherein y is
The quantity of layouting of second pressure probe 8, m are the quantity of solenoid valve.
Pressure probe is layouted sum=2* (m+1), wherein m is the quantity of solenoid valve.
Specifically, when burner is 2-4-6 third gear segmental structure, there are three fire row group 2, two electricity for setting in burner
Magnet valve, one of solenoid valve individually control the opening and closing of a fire row group 2, another solenoid valve is connect with another two fire row group,
For controlling the opening and closing of other two fire row group 2, to realize the different firepower size of 2-4-6 third gear.
At this point, sum=the 2* (m+1) that layouts=2* (2+1)=6 of pressure probe.
Wherein, the quantity x=m+1=2+1=3 that layouts of first pressure probe 7 is a, and three 7 settings of first pressures probe exist
In primary air room 3 and the setting of each fire row group 2 is respectively corresponded, multiple first pressure probes 7 are used to acquire primary air
Chamber pressure P1, 7 different locations multiple and that be distributed in primary air room 3 of setting of first pressure probe can guarantee detection
Accuracy.
Second pressure probe 8 is layouted quantity x=m+1=2+1=3, and three second pressure probes 8 are arranged in secondary sky
In gas chamber 4 and the setting of each fire row group 2 is respectively corresponded, multiple second pressure probes 8 are used to acquire auxiliary air chamber pressure
P2, 8 different locations multiple and that be distributed in secondary air plenum 4 of setting of second pressure probe can guarantee the accuracy of detection.
Embodiment 2
The embodiment of the present invention 2 provides a kind of control method of pressure follow control gas heater air quantity, is applied to combustion
Gas water heater, the gas heater include a kind of burner for being able to detect air chamber pressure as described in Example 1, method
Are as follows:
According to instantaneous gas secondary pressure P3With preset theoretical gas secondary pressure P3' whether consistent, determine gas and hot water
Whether device is in running order.
Under the working condition of gas heater, according to aspiration pressure P0Respectively with current primary air chamber pressure P1, it is secondary
Air chamber pressure P2Difference determine the first instantaneous pressure difference DELTA P0-1, the second instantaneous pressure difference DELTA P0-2；According to described
One instantaneous pressure difference value Δ P0-1With the second instantaneous pressure difference DELTA P0-2In any one situation of change, it is determined whether adjustment wind
The revolving speed of machine；If it is determined that adjustment rotation speed of fan, the air quantity Q according to needed for combustion chamber determines the revolving speed n and output electric current I of blower.
Respectively by the first instantaneous pressure difference DELTA P adjusted0-1" and preset first theoretical pressure difference DELTA P0-1'
Difference, the second instantaneous pressure difference DELTA P adjusted0-2" and default second theoretical pressure difference DELTA P0-2' difference and error threshold
Value ξ is compared, as the first instantaneous pressure difference DELTA P adjusted0-1" and preset first theoretical pressure difference DELTA
P0-1' difference be greater than error threshold ξ or the second instantaneous pressure difference DELTA P adjusted0-2" and default second theory
Pressure difference value Δ P0-2' difference be greater than error threshold ξ when, determine readjust blower revolving speed.
Meet suitable combustion conditions requirement according to the combustion position of system intake is adjusted to blower electric current
Working principle is, the value of the coefficient of excess air when control of air quantity when gas heater burns determines burning, air mistake
The size of surplus coefficient directly affects combustion efficiency, and coefficient of excess air is bigger than normal, is easy to increase the amount of combustion product, reduces burning
Indoor temperature, causes thermal loss to increase, and coefficient of excess air is less than normal, is easy to cause fuel combustion insufficient, flue gas occurs
Exceeded information, thus, the control of air quantity when gas heater burns determines that gas heater combustion conditions and complete machine make
Stability, comfort.
Therefore, combustion gas can be derived that in conjunction with combustion reaction formula according to the combustion conditions of gas heater or load condition
The air consumption of water heater is capable of determining that holding combustion according to the coefficient of excess air under air consumption and combustion conditions good situations
Air quantity needed for the good combustion conditions of gas water heater or reply load.
And the relational expression of air quantity Q and revolving speed n according to blower, it can determine that blowing machine needs to adjust by required air quantity
Revolving speed, wherein the air quantity Q and the relational expression of revolving speed n of blower are as follows:
Q=V*F=0.16*b* ε * n*d2*sinψ
Wherein, V is the wind speed size of fan outlet, and F is fan outlet aisle spare, and d is impeller diameter, and b is that spiral case is thick
Degree, n are wheel speed, and ε is blade excretion coefficient, and ψ is blade working angle.
The output electric current that can from which further follow that blower according to the relation curve of rotation speed of fan and blower output electric current again, from
And according to the variation of combustion conditions, the revolving speed of blower is adjusted, air quantity needed for making the output of blower.
A kind of control method for pressure follow control gas heater air quantity that the invention provides is mainly used for strong drum type
The air quantity of gas heater is controlled, and a secondary air amount of strong drum type gas heater and the proportion relation of combustion gas are to combustion gas
The combustion conditions of water heater complete machine have a great impact, the airtightness of the combustion system due to rousing type by force, when burning internal flame and
Flame envelope burning is formed by an auxiliary air chamber pressure and the variation difference of aspiration pressure difference also can be with reactive combustion internal system
The variation of operating condition, therefore can be by the pressure difference value of pressure and blower air inlet at one secondary air of monitoring come feedback system
Combustion position, so as to meet suitable burner according to the combustion position of system intake is adjusted to blower electric current
Condition requirement.
When combustion conditions change (when stifled cigarette), interior flame envelope height changes with burning velocity, according to ideal gas
Combustion system internal pressure increases known to body state equation PV=nRT, if in the state that blower does not adjust the speed, flame envelope becomes short, Δ P0-1
Increase；Internal flame height degree of susceptibility is less than flame envelope, but increases since air intake resistance is lost, and leads to Δ P0-2Reduced, because
This, can control the air quantity of gas heater according to aspiration pressure and combustion conditions.
With reference to Fig. 3, the air quantity of gas heater can be controlled according to aspiration pressure and combustion conditions, method
Specifically:
According to instantaneous gas secondary pressure P3With preset theoretical gas secondary pressure P3' whether consistent, determine gas secondary
Pressure P3With the presence or absence of the pressure signal of sustaining temperature, so that it is determined that whether gas heater is in running order.
Under the working condition of gas heater, according to aspiration pressure P0Respectively with current primary air chamber pressure P1, it is secondary
Air chamber pressure P2Difference determine the first instantaneous pressure difference DELTA P0-1, the second instantaneous pressure difference DELTA P0-2。
According to the first instantaneous pressure difference DELTA P0-1With preset first theoretical pressure difference DELTA P0-1' whether consistent,
Or the second instantaneous pressure difference DELTA P0-2With preset second theoretical pressure difference DELTA P0-2' whether consistent, it is determined whether adjustment
The revolving speed of blower；If the first instantaneous pressure difference DELTA P0-1With preset first theoretical pressure difference DELTA P0-1' it is inconsistent or
Second instantaneous pressure difference DELTA P described in person0-2With preset second theoretical pressure difference DELTA P0-2' inconsistent, determine adjustment blower
Revolving speed.
Firepower gear is determined according to the valve opening signal of solenoid valve, is determined and is consumed according to firepower gear, proportioning valve electric current and load
Tolerance；According to combustion reaction formula, coefficient of excess air and air consumption, air quantity Q needed for determining combustion chamber；According to the combustion
Air quantity Q needed for burning room determines the revolving speed n of blower；According to the relation curve of rotation speed of fan and output electric current, the defeated of blower is determined
Electric current I out.
Further include later, respectively by the first instantaneous pressure difference DELTA P adjusted0-1" and preset first theoretical pressure it is poor
It is worth Δ P0-1' difference, the second instantaneous pressure difference DELTA P adjusted0-2" and default second theoretical pressure difference DELTA P0-2' difference
Value is compared with error threshold ξ, as the first instantaneous pressure difference DELTA P adjusted0-1" and preset first theoretical pressure
Power difference DELTA P0-1' difference be greater than error threshold ξ or the second instantaneous pressure difference DELTA P adjusted0-2" and it is default
Second theoretical pressure difference DELTA P0-2' difference be greater than error threshold ξ when, determine readjust blower revolving speed.
When the load of gas heater changes, correspond to gas secondary pressure P3It changes, primary air room
Pressure P1Fluctuation is more obvious, and pressure jump signal herein can be used as the marking signal of identifying system load variations, therefore,
The air quantity of gas heater can be controlled according to aspiration pressure and load condition.
The air quantity of gas heater is controlled according to aspiration pressure and load condition, method specifically:
According to current primary air chamber pressure P1With theoretical primary air chamber pressure P1' whether consistent, determine gas heater
Load whether change；
If it is determined that the load of gas heater changes, firepower gear is determined according to the valve opening signal of solenoid valve, according to
Firepower gear, proportioning valve electric current and load determine air consumption；According to combustion reaction formula, coefficient of excess air and air consumption, really
Air quantity Q needed for determining combustion chamber；The revolving speed n of blower is determined according to air quantity Q needed for the combustion chamber；According to rotation speed of fan with it is defeated
The relation curve of electric current out determines the output electric current I of blower.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (12)
1. a kind of burner for being able to detect air chamber pressure, which is characterized in that including burner shell (1), one or more
Fire row group (2), pressure detecting assembly, the internal burner shell (1) is combustion chamber (11), one or more of fire row groups
(2) in combustion chamber (11), the side of each fire row group (2) is provided with ejecting port (21), the burner shell for setting
On be provided with air inlet (12), is respectively arranged with the primary air room communicated with air inlet (12) in the burner shell (1)
(3) it is communicated with secondary air plenum (4), the primary air room (3) with ejecting port (21), the secondary air plenum (4) and burning
Room (11) communicates, and the pressure detecting assembly setting is in burner shell (1) for detecting primary air room (3) and secondary sky
The pressure of gas chamber (4).
2. a kind of burner for being able to detect air chamber pressure according to claim 1, which is characterized in that the burner
The side of shell (1) is additionally provided with gas inlet (13) corresponding with ejecting port (21) and First air air inlet (14), described
Channel between gas inlet (13) and First air air inlet (14) forms primary air room (3).
3. a kind of burner for being able to detect air chamber pressure according to claim 2, which is characterized in that further include secondary
Air distribution plate (5), the auxiliary air distribution plate (5) are arranged in the bottom of combustion chamber (11), the auxiliary air distribution plate
(5) multiple Secondary Air air inlets (51), the gap shape between the auxiliary air distribution plate (5) and fire row group (2) are offered on
At secondary air plenum (4), air duct (6) are formed between the auxiliary air distribution plate (5) and burner shell (1), it is described
Air duct (6) is used to the air at air inlet (12) being conducted to primary air room (3) and secondary air plenum (4).
4. a kind of burner for being able to detect air chamber pressure according to claim 1 to 3, which is characterized in that
It further include at least one solenoid valve, at least one described solenoid valve is connect with one or more fire row groups (2), described for controlling
The quantity that fire row group (2) is opened.
5. a kind of burner for being able to detect air chamber pressure according to claim 4, which is characterized in that the pressure inspection
Surveying component includes multiple first pressures probe (7) and multiple second pressures probe (8), the multiple first pressure pop one's head in (7) and
Multiple second pressure probes (8) are separately positioned in primary air room (3) and secondary air plenum (4).
6. a kind of burner for being able to detect air chamber pressure according to claim 5, which is characterized in that first pressure
Power probe (7) layouts quantity x depending on the quantity m of solenoid valve, specifically, x=m+1, wherein x is first pressure probe
(7) quantity of layouting, m are the quantity of solenoid valve；The quantity y that layouts of second pressure probe (8) is according to the quantity m of solenoid valve
Depending on, specifically, y=m+1, wherein y is the quantity of layouting of second pressure probe (8), and m is the quantity of solenoid valve.
7. a kind of control method of pressure follow control gas heater air quantity is applied to gas heater, the combustion gas heat
Hydrophone includes a kind of burner for being able to detect air chamber pressure as claimed in any one of claims 1 to 6, which is characterized in that
Under the working condition of gas heater, according to aspiration pressure P0Respectively with current primary air chamber pressure P1, auxiliary air chamber pressure
Power P2Difference determine the first instantaneous pressure difference DELTA P0-1, the second instantaneous pressure difference DELTA P0-2；According to the described first instantaneous pressure
Power difference DELTA P0-1With the second instantaneous pressure difference DELTA P0-2In any one situation of change, it is determined whether adjust turning for blower
Speed；If it is determined that adjustment rotation speed of fan, the air quantity Q according to needed for combustion chamber determines the revolving speed n and output electric current I of blower.
8. a kind of control method of pressure follow control gas heater air quantity according to claim 7, which is characterized in that
It is described under the working condition of gas heater, according to aspiration pressure P0Respectively with current primary air chamber pressure P1, auxiliary air
Chamber pressure P2Difference determine the first instantaneous pressure difference DELTA P0-1, the second instantaneous pressure difference DELTA P0-2, further include before, according to
Instantaneous gas secondary pressure P3With preset theoretical gas secondary pressure P3' whether consistent, determine whether gas heater is in work
Make state.
9. a kind of control method of pressure follow control gas heater air quantity according to claim 8, which is characterized in that
Described if it is determined that adjusting rotation speed of fan, the air quantity Q according to needed for combustion chamber determines the revolving speed n and output electric current I of blower, goes back later
Including respectively by the first instantaneous pressure difference DELTA P adjusted0-1" and preset first theoretical pressure difference DELTA P0-1' difference
Value, the second instantaneous pressure difference DELTA P adjusted0-2" and default second theoretical pressure difference DELTA P0-2' difference and error threshold
ξ is compared, as the first instantaneous pressure difference DELTA P adjusted0-1" and preset first theoretical pressure difference DELTA P0-1’
Difference be greater than error threshold ξ or the second instantaneous pressure difference DELTA P adjusted0-2" and default second theoretical pressure
Difference DELTA P0-2' difference be greater than error threshold ξ when, determine readjust blower revolving speed.
10. a kind of control method of pressure follow control gas heater air quantity according to claim 7-9 any one,
It is characterized in that, described according to the first instantaneous pressure difference DELTA P0-1With the second instantaneous pressure difference DELTA P0-2In any one
Situation of change, it is determined whether the revolving speed of blower is adjusted, specifically, according to the first instantaneous pressure difference DELTA P0-1With it is default
The first theoretical pressure difference DELTA P0-1' whether consistent or the second instantaneous pressure difference DELTA P0-2With the preset second theoretical pressure
Power difference DELTA P0-2' whether consistent, it is determined whether adjust the revolving speed of blower；If the first instantaneous pressure difference DELTA P0-1With it is default
The first theoretical pressure difference DELTA P0-1' inconsistent or described second instantaneous pressure difference DELTA P0-2It is theoretical with preset second
Pressure difference value Δ P0-2' inconsistent, determine adjustment rotation speed of fan.
11. a kind of control method of pressure follow control gas heater air quantity according to claim 10, feature exist
In, however, it is determined that adjustment rotation speed of fan, the air quantity Q according to needed for combustion chamber determine the revolving speed n and output electric current I of blower, specifically,
Firepower gear is determined according to the valve opening signal of solenoid valve, and air consumption is determined according to firepower gear, proportioning valve electric current and load；According to
Combustion reaction formula, coefficient of excess air and air consumption, air quantity Q needed for determining combustion chamber；According to needed for the combustion chamber
Air quantity Q determines the revolving speed n of blower；According to the relation curve of rotation speed of fan and output electric current, the output electric current I of blower is determined.
12. a kind of control method of pressure follow control gas heater air quantity according to claim 11, feature exist
In further including, according to current primary air chamber pressure P1With theoretical primary air chamber pressure P1' whether consistent, determine gas and hot water
Whether the load of device changes；If it is determined that the load of gas heater changes, the air quantity Q according to needed for combustion chamber is determined
The revolving speed n and output electric current I of blower.
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| CN110207114B (en) | 2021-06-08 |
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