CN109612113A - Gas source judgment method and control method of self-adaptive gas water heater - Google Patents
Gas source judgment method and control method of self-adaptive gas water heater Download PDFInfo
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- CN109612113A CN109612113A CN201811259560.3A CN201811259560A CN109612113A CN 109612113 A CN109612113 A CN 109612113A CN 201811259560 A CN201811259560 A CN 201811259560A CN 109612113 A CN109612113 A CN 109612113A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000002485 combustion reaction Methods 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 158
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 40
- 230000003044 adaptive effect Effects 0.000 claims description 21
- 239000003345 natural gas Substances 0.000 claims description 21
- 239000003034 coal gas Substances 0.000 claims description 16
- 239000003915 liquefied petroleum gas Substances 0.000 claims description 13
- 239000000567 combustion gas Substances 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000012360 testing method Methods 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims 1
- 239000008239 natural water Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
Abstract
The invention discloses a gas source judgment method of a self-adaptive gas water heater, which comprises the following steps: determining the adjusting range of each air source and the air proportional valve; determining and judging relation data of an air source and temperature rise and water flow; pre-storing the data to the water heater; introducing a certain gas, collecting the water outlet temperature and the corresponding water flow, and calculating the temperature rise delta T of the inlet water and the outlet water; and searching the water flow of the air source corresponding to the temperature rise delta T, and comparing the water flow with the water flow to determine the type of the air source. Meanwhile, a control method applying the air source judgment method is also disclosed. The invention has at least the following advantages: 1. the relation data of the temperature rise and the water flow of the judgment gas source are used as judgment basis, the temperature rise and the water flow data introduced into the gas source are collected and compared with the judgment basis to determine the type of the gas source, and the judgment method is safe and reliable and has strong universality; 2. after the type of the air source is determined, the air proportional valve and the fan are controlled to match the combustion working condition, so that the air source is ensured to be fully combusted, and the improvement of the satisfaction degree of users is facilitated.
Description
Technical field
The present invention relates to gas cooker technical field more particularly to a kind of use liquefied petroleum gas, natural gas, artificial coal gas
Domestic gas-fired water heater, adaptive gas source judgment method and control method.
Background technique
Most of existing domestic gas-fired water heater can only use single gas source, when gas heater uses different combustions
When gas, generally require to replace relevant structural member and adjustment control parameter, it is extremely inconvenient for users.
For this purpose, gas heater research staff starts the gas heater that research and development are suitable for different gas sources.Such as Chinese invention
Patent application CN201110024695.3, applying date 2011.01.21 disclose a kind of " adaptive gas heater gas source control
Method processed ", it is to receive water flow, proportioning valve electric current and temperature difference data by data acquisition module, by control system according to adopting
Gas source is distinguished in the affiliated section of the data collected, and is adjusted to target temperature by ratio adjusting valve.Variation is adjusted according to the secondary pressure of gas source
The amount of section size, control revolving speed and proportioning valve toward nozzle delivery of fuel gas.Blower uses the strong single speed alternating current generator for taking out structure,
When nozzle is identical, the secondary pressure of natural gas is higher than liquefied gas, and rotation speed of fan is remained unchanged with the increase of proportioning valve electric current.Blower uses
The DC fan of strong drum structure, DC fan flame are influenced by rotation speed of fan, the blower inside adjacent section M and section N
Revolving speed is consistent.
But above-mentioned patent only provides a kind of possibility of adaptive gas heater source control method, does not provide
Specific gas source judgment technology details and the specific embodiment that can realize the control method.
Summary of the invention
The purpose of the invention is to statuses in view of the prior art, provide a kind of reliable adaptive gas source judgement side
Method, judgment method is safe and reliable, versatile, is suitable for gas heater and gas cooker.Meanwhile it additionally providing to apply and be somebody's turn to do
The control method of gas source judgment method, by adjusting the gentle proportioning valve of blower, to match combustion conditions.
A kind of gas source judgment method of the adaptive gas heater provided according to the present invention, includes the following steps:
S1: the adjustable range of the gentle proportioning valve of each gas source is determined；
S2: specific gas ratio valve opening P is chosen0With judge gas source；
S3: acquisition judges the temperature rise of gas source and the relation data of water flow；
S4: energization gas heater loads and prestores the data in S1 and S3 step；
S5: setting leaving water temperature T0, it is passed through a certain combustion gas and starts gas heater；
S6: when leaving water temperature reaches T0When, corresponding inflow temperature T and water flow q is recorded, and pass through formula Δ T=T-
T0Calculate temperature rise Δ T；
S7: searching the corresponding water flow q ' for judging gas source of temperature rise Δ T, and by q and q ' it is compared, to determine gas source kind
Class.
Further, in S1 step comprising steps of
S101: the thermic load section of gas heater is set as [QL, QH]；
S102: pass through formulaCalculate secondary pressure P before each gas source nozzle2, with
The adjustable range of each gas source is determined, in formula: n- nozzle number, μ-discharge coefficient, P2Secondary pressure before nozzle；DgNozzle inside diameter, S-
Combustion gas relative density, HLCombustion gas low heat value；
S103: according to the adjustable range of each gas source, the adjustable range [P of gas proportioning valve is determinedL, PH]。
Further, in S102 step, the gas source is liquefied petroleum gas, natural gas, at least two in artificial coal gas
Kind, being computed can show that the adjustable range of the liquefied petroleum gas is [PL1, PH1], the adjustable range of the natural gas is [PL2,
PH2], the adjustable range of the artificial coal gas is [PL3, PH, and P 3]L1<PL2<PL3, PH1<PH2<PH3。
Further, in S2 step, as the gas ratio valve opening P0∈[PL, PH] and temperature rise Δ T-phase is simultaneously, it is described
The thermic load Q of liquefied petroleum gas1The thermic load Q of natural gas described in >2The thermic load Q of artificial coal gas described in >3, then the liquefaction
The water flow q of oil gas1The water flow q of natural gas described in >2The water flow q of artificial coal gas described in >3, natural gas is selected with this
As judging gas source.
Further, in the S3 step comprising steps of
S301: in the adjustable range [P of gas proportioning valveL, PH] in select a certain operating point；
S302: being passed through judgement gas source, starts gas heater；
S303: adjusting water regulating valve, and keep the temperature rise of Inlet and outlet water constant, acquires temperature rise Δ T and corresponding water flow q '
Data.
Further, it in S303 step, after the gas heater starts and runs 1min, then acquires and judges gas source
Inlet and outlet temperature and water flow q ' data.
Further, in S4 step comprising steps of
S401: gas heater is powered；
Whether S402: being worked normally by controller self-test each section component, if then entering in next step；
S403: the data in S1 and S3 step are loaded and are prestored；
S404: initialization hardware.
Further, in S6 step, after the gas heater starts and runs 1min, then pass through water regulating valve tune
Water-saving amount, so that leaving water temperature reaches T0。
Further, the q '=q2, when q is greater than q2When, then determine the combustion gas being passed through for liquefied petroleum gas；When q is approximately equal to
q2, then it is natural gas；When q is less than q2, then it is artificial coal gas.
A kind of control of the application provided according to the present invention the gas source judgment method of adaptive gas heater as described above
Method adjusts gas proportioning valve, and petticoat pipe blower is carried out variable frequency adjustment, is passed through gas with matching after the gas source type determines
The combustion conditions in source.
Compared with prior art, the present invention having the following beneficial effects:
1. using determine gas source temperature rise and water flow relation data as judgment basis, by adjusting water regulating valve and protecting
It is constant to hold temperature rise, acquires temperature rise and water flow data, and it is determined to the type of be passed through gas source with distinguishing rule comparison, it should
Judgment method is safe and reliable, versatile；
After 2. the gas source type that the present invention is passed through water heater determines, by adjusting gas proportioning valve and petticoat pipe blower, with matching
Combustion conditions guarantee gas source full combustion, while being conducive to improve user satisfaction.
Detailed description of the invention
Fig. 1 is the flow chart for implementing adaptive gas source judgment method in 1；
Fig. 2 is the flow chart of S1 step in Fig. 1；
Fig. 3 is the flow chart of S3 step in Fig. 1；
Fig. 4 is the flow chart of S4 step in Fig. 1.
Specific embodiment
The present invention will be described for following embodiment, but the present invention is not limited to these examples system.To of the invention
Specific embodiment is modified or some technical features can be equivalently replaced, without departing from the spirit of the present invention program,
It should all cover within the scope of the technical scheme claimed by the invention.
Embodiment 1
As shown in Figure 1, a kind of gas source judgment method of adaptive gas heater of the present embodiment, includes the following steps:
S1: the adjustable range of the gentle proportioning valve of each gas source is determined；With this convenient for determining each corresponding motor control ginseng of gas source
Number；
S2: specific gas ratio valve opening P is chosen0With judge gas source；
S3: acquisition judges the temperature rise of gas source and the relation data of water flow；Since temperature rise is with the specifically used ring of water heater
Border changes and change, by detect in advance judge relation curve between the temperature rise of gas source and water flow and as judgement according to
According to, it can be ensured that the temperature rise of the specifically used gas source of user in the limit of temperature rise for judging gas source, guarantee judgment basis accuracy and
Reliability；
S4: energization gas heater loads and prestores the data in S1 and S3 step；Make water heater that there is each gas source with this
Control parameter and gas source judgment basis data, in order to determine be passed through the type of gas source after, can be joined according to the control of gas source
Number carries out adaptability adjusting, matches the combustion conditions of gas source, guarantees that gas source burning is abundant；
S5: setting leaving water temperature T0, it is passed through a certain combustion gas and starts gas heater；
S6: when leaving water temperature reaches T0When, corresponding inflow temperature T and water flow q is recorded, and pass through formula Δ T=T-
T0Calculate temperature rise Δ T；Preferably, after gas heater starts and runs 1min, then the inflow temperature of water heater, water outlet are acquired
Temperature and water flow data guarantee that the collected data of institute are accurate, reliable to ensure that gas heater is stable；
S7: searching the corresponding water flow q ' for judging gas source of temperature rise Δ T, and by q and q ' it is compared, to determine gas source kind
Class.Determine the type for being passed through gas source, quickly by way of contrast as a result, in order to which water heater carries out accordingly according to gas source type
Control parameter adjustment, guarantees that water heater is adaptive to be passed through gas source.
As shown in Fig. 2, in S1 step comprising steps of
S101: the thermic load section of gas heater is set as [QL, QH]；Specifically, which is water heater
Designed heat load adjustment range when manufacture；
S102: pass through formulaCalculate secondary pressure P before each gas source nozzle2, with
Determine the adjustable range of each gas source,
In formula: n- nozzle number, μ-discharge coefficient, P2Secondary pressure before nozzle；DgNozzle inside diameter, S- combustion gas relative density,
HLCombustion gas low heat value；As a result, according to the thermic load section of gas heater, the minimum and highest nozzle of each gas source can be calculated
The adjustable range of preceding secondary pressure, and then accurately determine the specific adjustable range that there emerged a gas source；
S103: according to the adjustable range of each gas source, the adjustable range [P of gas proportioning valve is determinedL, PH]。
Preferably, in S102 step, the gas source is liquefied petroleum gas, natural gas, at least two in artificial coal gas,
The adjustable range that the liquefied petroleum gas is determined by calculation simultaneously is [PL1, PH1], the adjustable range of the natural gas is
[PL2, PH2], the adjustable range of the artificial coal gas is [PL3, PH, and P 3]L1<PL2<PL3, PH1<PH2<PH3。
Further, in S2 step, as the gas ratio valve opening P0∈[PL, PH] and temperature rise Δ T-phase is simultaneously, it is described
The thermic load Q of liquefied petroleum gas1The thermic load Q of natural gas described in >2The thermic load Q of artificial coal gas described in >3, then the liquefaction
The water flow q of oil gas1The water flow q of natural gas described in >2The water flow q of artificial coal gas described in >3.As a result, it is evident that
Natural gas, which is used as, judges that gas source is optimal, during water heaters design, it is only necessary to determine the temperature rise of natural gas and water flow relationship number
According to, can determine the type of gas source by comparing, with simplified control program and judgment step, make gas source judgement more quickly,
Reliably.
As shown in figure 3, in the S3 step comprising steps of
S301: in the adjustable range [P of gas proportioning valveL, PH] in select a certain operating point；
S302: being passed through judgement gas source, starts gas heater；
S303: adjusting water regulating valve, and keep the temperature rise of Inlet and outlet water constant, acquires temperature rise Δ T and corresponding water flow q '
Data.Preferably, after the gas heater starts and runs 1min, then the inlet and outlet temperature and water flow for judging gas source are acquired
Q ' data, to guarantee that data preparation collected is high.
As shown in figure 4, in S4 step comprising steps of
S401: gas heater is powered；
Whether S402: being worked normally by controller self-test each section component, if then entering in next step；
S403: the data in S1 and S3 step are loaded and are prestored；
S404: initialization hardware.Water heater failure problems are excluded as a result, guarantee that each component of water heater operates normally, really
It is normal, effective to protect prestored data.
Further, in S7 step, the q '=q2, when q is greater than q2When, then determine the combustion gas being passed through for liquefied petroleum
Gas；When q is approximately equal to q2, then it is natural gas；When q is less than q2, then it is artificial coal gas.
In the present embodiment, disengaging water flow is detected by flow sensor, is detected respectively by two temperature sensors
The water temperature of inflow and outflow.
As it can be seen that making the judgement of gas source type by using the temperature rise of natural gas and water flow relation curve as judgment basis
It is simpler, quick and accurate and reliable, it is versatile.
Embodiment 2
A kind of controlling party of application of this implementation gas source judgment method of adaptive gas heater as described in Example 1
Method adjusts gas proportioning valve, and petticoat pipe blower is carried out variable frequency adjustment after a certain gas source type being passed through determines, logical to match
Enter the combustion conditions of gas source.Its control method is simple and reliable as a result, and versatility is wide, guarantees that same water heater is suitable for difference
Gas source saves the spending of family to user, improves user satisfaction.
The above are merely some embodiments of the present invention.For those of ordinary skill in the art, it is not departing from
Under the premise of the invention is conceived, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.
Claims (10)
1. a kind of gas source judgment method of adaptive gas heater, which comprises the steps of:
S1: the adjustable range of the gentle proportioning valve of each gas source is determined；
S2: specific gas ratio valve opening P is chosen0With judge gas source；
S3: acquisition judges the temperature rise of gas source and the relation data of water flow；
S4: energization gas heater loads and prestores the data in S1 and S3 step；
S5: setting leaving water temperature T0, it is passed through a certain combustion gas and starts gas heater；
S6: when leaving water temperature reaches T0When, corresponding inflow temperature T and water flow q is recorded, and pass through formula Δ T=T-T0It calculates
Temperature rise Δ T；
S7: searching the corresponding water flow q ' for judging gas source of temperature rise Δ T, and by q and q ' it is compared, to determine gas source type.
2. a kind of gas source judgment method of adaptive gas heater as described in claim 1, which is characterized in that in S1 step
In comprising steps of
S101: the thermic load section of gas heater is set as [QL, QH]；
S102: pass through formulaCalculate secondary pressure P before each gas source nozzle2, with determination
The adjustable range of each gas source, in formula: n- nozzle number, μ-discharge coefficient, P2Secondary pressure before nozzle；DgNozzle inside diameter, S- combustion gas
Relative density, HLCombustion gas low heat value；
S103: according to the adjustable range of each gas source, the adjustable range [P of gas proportioning valve is determinedL, PH]。
3. a kind of gas source judgment method of adaptive gas heater as claimed in claim 2, which is characterized in that walked in S102
In rapid, the gas source is liquefied petroleum gas, natural gas, at least two in artificial coal gas, and the liquefaction stone can be obtained by being computed
The adjustable range of oil gas is [PL1, PH1], the adjustable range of the natural gas is [PL2, PH2], the adjusting model of the artificial coal gas
It encloses for [PL3, PH, and P 3]L1 < PL2 < PL3, PH1 < PH2 < PH3。
4. a kind of gas source judgment method of adaptive gas heater as described in claim 1, which is characterized in that in S2 step
In, as the gas ratio valve opening P0∈[PL, PH] and temperature rise Δ T-phase is simultaneously, the thermic load Q of the liquefied petroleum gas1Described in >
The thermic load Q of natural gas2The thermic load Q of artificial coal gas described in >3, then the water flow q of the liquefied petroleum gas1It is natural described in >
The water flow q of gas2The water flow q of artificial coal gas described in >3, natural gas is selected as judging gas source using this.
5. a kind of gas source judgment method of adaptive gas heater as described in claim 1, which is characterized in that in S3 step
In comprising steps of
S301: in the adjustable range [P of gas proportioning valveL, PH] in select a certain operating point；
S302: being passed through judgement gas source, starts gas heater；
S303: adjusting water regulating valve, and keep the temperature rise of Inlet and outlet water constant, acquires temperature rise Δ T and corresponding water flow q ' data.
6. a kind of gas source judgment method of adaptive gas heater as claimed in claim 5, which is characterized in that walked in S303
In rapid, after the gas heater starts and runs 1min, then the inlet and outlet temperature for judging gas source and water flow q ' data are acquired.
7. a kind of gas source judgment method of adaptive gas heater as described in claim 1, which is characterized in that in S4 step
In comprising steps of
S401: gas heater is powered；
Whether S402: being worked normally by controller self-test each section component, if then entering in next step；
S403: the data in S1 and S3 step are loaded and are prestored；
S404: initialization hardware.
8. a kind of gas source judgment method of adaptive gas heater as described in claim 1, which is characterized in that in S6 step
In, after the gas heater starts and runs 1min, then through water regulating valve regulating pondage, so that leaving water temperature reaches
T0。
9. a kind of gas source judgment method of adaptive gas heater as described in claim 1, which is characterized in that in S7 step
In, the q '=q2, when q is greater than q2When, then determine the combustion gas being passed through for liquefied petroleum gas；When q is approximately equal to q2, then it is natural gas；
When q is less than q2, then it is artificial coal gas.
10. a kind of control of application gas source judgment method of adaptive gas heater as described in any one of claim 1-9
Method, which is characterized in that after the gas source type determines, gas proportioning valve is adjusted, and petticoat pipe blower is subjected to variable frequency adjustment, with
Matching is passed through the combustion conditions of gas source.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811259560.3A CN109612113A (en) | 2018-10-26 | 2018-10-26 | Gas source judgment method and control method of self-adaptive gas water heater |
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| CN201811259560.3A CN109612113A (en) | 2018-10-26 | 2018-10-26 | Gas source judgment method and control method of self-adaptive gas water heater |
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Family
ID=66003018
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Cited By (3)
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| CN112032772A (en) * | 2020-08-10 | 2020-12-04 | 华帝股份有限公司 | Gas source type self-adaptive stove control method and control system |
| CN112524636A (en) * | 2020-11-30 | 2021-03-19 | 芜湖美的厨卫电器制造有限公司 | Control method and device of gas water heater, gas water heater and storage medium |
| CN112577203A (en) * | 2019-09-30 | 2021-03-30 | 芜湖美的厨卫电器制造有限公司 | Air source switching method and device, water heater and computer readable storage medium |
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Application publication date: 20190412 |